== sanity test 398b: DIO and buffer IO race ============== 01:28:30 (1781242110) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.62351 s, 7.6 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145217: Fri Jun 12 01:31:20 2026 read: IOPS=10, BW=41.1KiB/s (42.1kB/s)(5992KiB/145649msec) clat (usec): min=38, max=924945, avg=51056.47, stdev=41554.36 lat (usec): min=39, max=924946, avg=51070.70, stdev=41556.28 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 75], 10.00th=[ 16909], 20.00th=[ 26346], | 30.00th=[ 31851], 40.00th=[ 37487], 50.00th=[ 43779], 60.00th=[ 51643], | 70.00th=[ 62129], 80.00th=[ 73925], 90.00th=[ 89654], 95.00th=[106431], | 99.00th=[177210], 99.50th=[235930], 99.90th=[337642], 99.95th=[926942], | 99.99th=[926942] bw ( KiB/s): min= 5, max= 94, per=25.36%, avg=40.58, stdev=16.70, samples=285 iops : min= 1, max= 23, avg= 9.50, stdev= 4.21, samples=285 write: IOPS=10, BW=43.2KiB/s (44.3kB/s)(6296KiB/145649msec); 0 zone resets clat (usec): min=1201, max=447399, avg=43655.23, stdev=43679.63 lat (usec): min=1203, max=447401, avg=43658.24, stdev=43679.30 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1598], 10.00th=[ 2507], 20.00th=[ 6194], | 30.00th=[ 11207], 40.00th=[ 21627], 50.00th=[ 31851], 60.00th=[ 42730], | 70.00th=[ 56886], 80.00th=[ 76022], 90.00th=[103285], 95.00th=[130548], | 99.00th=[183501], 99.50th=[210764], 99.90th=[270533], 99.95th=[446694], | 99.99th=[446694] bw ( KiB/s): min= 7, max= 95, per=25.47%, avg=42.79, stdev=18.83, samples=284 iops : min= 1, max= 23, avg=10.05, stdev= 4.75, samples=284 lat (usec) : 50=0.10%, 100=3.03%, 250=0.29%, 500=0.03%, 750=0.03% lat (msec) : 2=4.30%, 4=3.22%, 10=6.97%, 20=7.91%, 50=35.90% lat (msec) : 100=29.56%, 250=8.40%, 500=0.23%, 1000=0.03% cpu : usr=0.10%, sys=5.21%, ctx=6819, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145218: Fri Jun 12 01:31:20 2026 read: IOPS=9, BW=39.0KiB/s (40.0kB/s)(5940KiB/148519msec) clat (usec): min=27, max=354873, avg=49972.11, stdev=33773.26 lat (usec): min=27, max=354875, avg=49979.06, stdev=33769.72 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 90], 10.00th=[ 18482], 20.00th=[ 26084], | 30.00th=[ 31065], 40.00th=[ 36439], 50.00th=[ 43779], 60.00th=[ 51119], | 70.00th=[ 59507], 80.00th=[ 70779], 90.00th=[ 92799], 95.00th=[110625], | 99.00th=[156238], 99.50th=[175113], 99.90th=[333448], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 5, max= 94, per=24.75%, avg=39.60, stdev=16.80, samples=291 iops : min= 1, max= 23, avg= 9.26, stdev= 4.26, samples=291 write: IOPS=10, BW=42.7KiB/s (43.8kB/s)(6348KiB/148519msec); 0 zone resets clat (usec): min=1283, max=905400, avg=46562.87, stdev=49626.14 lat (usec): min=1284, max=905402, avg=46566.53, stdev=49625.69 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1680], 10.00th=[ 3195], 20.00th=[ 7177], | 30.00th=[ 13304], 40.00th=[ 23462], 50.00th=[ 34866], 60.00th=[ 45876], | 70.00th=[ 60556], 80.00th=[ 77071], 90.00th=[106431], 95.00th=[128451], | 99.00th=[196084], 99.50th=[246416], 99.90th=[367002], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 7, max= 102, per=25.14%, avg=42.24, stdev=18.41, samples=292 iops : min= 1, max= 25, avg= 9.91, stdev= 4.64, samples=292 lat (usec) : 50=0.03%, 100=2.57%, 250=0.36%, 500=0.03%, 1000=0.03% lat (msec) : 2=3.48%, 4=2.96%, 10=7.03%, 20=8.20%, 50=35.84% lat (msec) : 100=29.75%, 250=9.38%, 500=0.29%, 1000=0.03% cpu : usr=0.09%, sys=5.02%, ctx=6785, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145219: Fri Jun 12 01:31:20 2026 read: IOPS=10, BW=40.6KiB/s (41.5kB/s)(6028KiB/148646msec) clat (usec): min=31, max=357075, avg=49862.80, stdev=31890.50 lat (usec): min=32, max=357077, avg=49866.49, stdev=31892.45 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 74], 10.00th=[ 17957], 20.00th=[ 26870], | 30.00th=[ 32637], 40.00th=[ 38536], 50.00th=[ 44827], 60.00th=[ 52167], | 70.00th=[ 60556], 80.00th=[ 72877], 90.00th=[ 89654], 95.00th=[105382], | 99.00th=[149947], 99.50th=[170918], 99.90th=[254804], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 7, max= 95, per=25.37%, avg=40.60, stdev=15.86, samples=288 iops : min= 1, max= 23, avg= 9.50, stdev= 3.98, samples=288 write: IOPS=10, BW=42.1KiB/s (43.1kB/s)(6260KiB/148646msec); 0 zone resets clat (usec): min=1212, max=897244, avg=46657.07, stdev=50554.04 lat (usec): min=1213, max=897246, avg=46661.56, stdev=50553.82 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1631], 10.00th=[ 2835], 20.00th=[ 6783], | 30.00th=[ 12518], 40.00th=[ 23725], 50.00th=[ 35390], 60.00th=[ 46924], | 70.00th=[ 60556], 80.00th=[ 79168], 90.00th=[102237], 95.00th=[130548], | 99.00th=[210764], 99.50th=[270533], 99.90th=[358613], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 7, max= 87, per=24.83%, avg=41.72, stdev=17.35, samples=291 iops : min= 1, max= 21, avg= 9.79, stdev= 4.36, samples=291 lat (usec) : 50=0.23%, 100=3.09%, 250=0.29%, 500=0.07% lat (msec) : 2=4.17%, 4=2.86%, 10=6.87%, 20=7.06%, 50=35.09% lat (msec) : 100=31.54%, 250=8.33%, 500=0.36%, 1000=0.03% cpu : usr=0.10%, sys=5.20%, ctx=6794, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145220: Fri Jun 12 01:31:20 2026 read: IOPS=10, BW=40.6KiB/s (41.5kB/s)(6052KiB/149181msec) clat (usec): min=29, max=417624, avg=50373.03, stdev=36491.92 lat (usec): min=30, max=417626, avg=50374.79, stdev=36491.91 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 72], 10.00th=[ 16057], 20.00th=[ 25035], | 30.00th=[ 31589], 40.00th=[ 37487], 50.00th=[ 43254], 60.00th=[ 51119], | 70.00th=[ 61080], 80.00th=[ 72877], 90.00th=[ 89654], 95.00th=[110625], | 99.00th=[162530], 99.50th=[210764], 99.90th=[392168], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 7, max= 102, per=25.40%, avg=40.65, stdev=16.90, samples=288 iops : min= 1, max= 25, avg= 9.52, stdev= 4.26, samples=288 write: IOPS=10, BW=41.8KiB/s (42.8kB/s)(6236KiB/149181msec); 0 zone resets clat (usec): min=1261, max=952775, avg=46512.24, stdev=49184.82 lat (usec): min=1263, max=952777, avg=46516.87, stdev=49183.98 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1598], 10.00th=[ 2704], 20.00th=[ 6718], | 30.00th=[ 12518], 40.00th=[ 23987], 50.00th=[ 35914], 60.00th=[ 47449], | 70.00th=[ 61080], 80.00th=[ 79168], 90.00th=[106431], 95.00th=[130548], | 99.00th=[183501], 99.50th=[208667], 99.90th=[320865], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 5, max= 112, per=24.51%, avg=41.18, stdev=17.63, samples=293 iops : min= 1, max= 28, avg= 9.65, stdev= 4.45, samples=293 lat (usec) : 50=0.23%, 100=3.06%, 250=0.26%, 500=0.07%, 1000=0.03% lat (msec) : 2=4.26%, 4=2.47%, 10=6.93%, 20=8.01%, 50=35.25% lat (msec) : 100=30.21%, 250=8.89%, 500=0.29%, 1000=0.03% cpu : usr=0.09%, sys=4.85%, ctx=6754, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=161KiB/s (165kB/s), 39.0KiB/s-41.1KiB/s (40.0kB/s-42.1kB/s), io=23.4MiB (24.6MB), run=145649-149181msec WRITE: bw=169KiB/s (173kB/s), 41.8KiB/s-43.2KiB/s (42.8kB/s-44.3kB/s), io=24.6MiB (25.7MB), run=145649-149181msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145212: Fri Jun 12 01:34:18 2026 read: IOPS=4, BW=18.3KiB/s (18.8kB/s)(5992KiB/326996msec) clat (msec): min=6, max=954, avg=47.99, stdev=45.15 lat (msec): min=6, max=954, avg=48.00, stdev=45.15 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 38], 60.00th=[ 44], | 70.00th=[ 52], 80.00th=[ 63], 90.00th=[ 90], 95.00th=[ 120], | 99.00th=[ 215], 99.50th=[ 259], 99.90th=[ 388], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 80, per=28.04%, avg=20.47, stdev=13.62, samples=560 iops : min= 1, max= 20, avg= 4.44, stdev= 3.44, samples=560 write: IOPS=4, BW=19.3KiB/s (19.7kB/s)(6296KiB/326996msec); 0 zone resets clat (msec): min=43, max=504, avg=161.79, stdev=67.51 lat (msec): min=43, max=504, avg=161.79, stdev=67.51 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 79], 10.00th=[ 92], 20.00th=[ 106], | 30.00th=[ 121], 40.00th=[ 136], 50.00th=[ 148], 60.00th=[ 163], | 70.00th=[ 184], 80.00th=[ 213], 90.00th=[ 251], 95.00th=[ 292], | 99.00th=[ 388], 99.50th=[ 435], 99.90th=[ 502], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7, max= 47, per=24.87%, avg=18.90, stdev= 7.94, samples=634 iops : min= 1, max= 11, avg= 4.05, stdev= 2.02, samples=634 lat (msec) : 10=0.72%, 20=8.14%, 50=24.71%, 100=19.63%, 250=41.37% lat (msec) : 500=5.34%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.40%, ctx=5609, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145213: Fri Jun 12 01:34:18 2026 read: IOPS=4, BW=18.2KiB/s (18.6kB/s)(5940KiB/326502msec) clat (msec): min=7, max=974, avg=49.45, stdev=48.26 lat (msec): min=7, max=974, avg=49.46, stdev=48.26 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 38], 60.00th=[ 45], | 70.00th=[ 53], 80.00th=[ 66], 90.00th=[ 93], 95.00th=[ 125], | 99.00th=[ 215], 99.50th=[ 300], 99.90th=[ 460], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 79, per=29.06%, avg=21.21, stdev=13.38, samples=536 iops : min= 1, max= 19, avg= 4.63, stdev= 3.37, samples=536 write: IOPS=4, BW=19.4KiB/s (19.9kB/s)(6348KiB/326502msec); 0 zone resets clat (msec): min=49, max=538, avg=159.17, stdev=64.25 lat (msec): min=49, max=538, avg=159.17, stdev=64.25 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 80], 10.00th=[ 91], 20.00th=[ 105], | 30.00th=[ 118], 40.00th=[ 132], 50.00th=[ 148], 60.00th=[ 165], | 70.00th=[ 180], 80.00th=[ 207], 90.00th=[ 245], 95.00th=[ 284], | 99.00th=[ 368], 99.50th=[ 388], 99.90th=[ 485], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7, max= 47, per=25.14%, avg=19.11, stdev= 7.71, samples=633 iops : min= 1, max= 11, avg= 4.10, stdev= 1.96, samples=633 lat (msec) : 10=0.94%, 20=7.42%, 50=24.35%, 100=20.18%, 250=41.93% lat (msec) : 500=5.11%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.34%, ctx=5599, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145214: Fri Jun 12 01:34:18 2026 read: IOPS=4, BW=18.4KiB/s (18.9kB/s)(6028KiB/326923msec) clat (msec): min=7, max=393, avg=49.34, stdev=41.06 lat (msec): min=7, max=393, avg=49.34, stdev=41.06 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 38], 60.00th=[ 45], | 70.00th=[ 53], 80.00th=[ 66], 90.00th=[ 94], 95.00th=[ 127], | 99.00th=[ 213], 99.50th=[ 255], 99.90th=[ 342], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 7, max= 72, per=28.00%, avg=20.44, stdev=13.44, samples=564 iops : min= 1, max= 18, avg= 4.44, stdev= 3.39, samples=564 write: IOPS=4, BW=19.1KiB/s (19.6kB/s)(6260KiB/326923msec); 0 zone resets clat (msec): min=49, max=1090, avg=161.10, stdev=72.53 lat (msec): min=49, max=1090, avg=161.10, stdev=72.53 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 80], 10.00th=[ 89], 20.00th=[ 106], | 30.00th=[ 118], 40.00th=[ 131], 50.00th=[ 146], 60.00th=[ 161], | 70.00th=[ 184], 80.00th=[ 209], 90.00th=[ 251], 95.00th=[ 288], | 99.00th=[ 401], 99.50th=[ 430], 99.90th=[ 542], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 47, per=24.90%, avg=18.92, stdev= 7.93, samples=630 iops : min= 1, max= 11, avg= 4.05, stdev= 2.03, samples=630 lat (msec) : 10=0.62%, 20=7.19%, 50=25.42%, 100=19.69%, 250=41.54% lat (msec) : 500=5.40%, 750=0.10%, 2000=0.03% cpu : usr=0.04%, sys=1.39%, ctx=5677, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145216: Fri Jun 12 01:34:18 2026 read: IOPS=4, BW=18.6KiB/s (19.1kB/s)(6052KiB/324868msec) clat (msec): min=6, max=396, avg=47.14, stdev=38.43 lat (msec): min=6, max=396, avg=47.14, stdev=38.43 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 64], 90.00th=[ 87], 95.00th=[ 117], | 99.00th=[ 205], 99.50th=[ 253], 99.90th=[ 338], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 103, per=29.71%, avg=21.69, stdev=14.52, samples=535 iops : min= 1, max= 25, avg= 4.75, stdev= 3.65, samples=535 write: IOPS=4, BW=19.2KiB/s (19.7kB/s)(6236KiB/324868msec); 0 zone resets clat (msec): min=44, max=1193, avg=162.34, stdev=73.98 lat (msec): min=44, max=1193, avg=162.35, stdev=73.99 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 80], 10.00th=[ 90], 20.00th=[ 106], | 30.00th=[ 118], 40.00th=[ 132], 50.00th=[ 148], 60.00th=[ 167], | 70.00th=[ 184], 80.00th=[ 209], 90.00th=[ 251], 95.00th=[ 296], | 99.00th=[ 388], 99.50th=[ 464], 99.90th=[ 527], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 40, per=24.82%, avg=18.87, stdev= 7.91, samples=630 iops : min= 1, max= 10, avg= 4.04, stdev= 2.01, samples=630 lat (msec) : 10=0.49%, 20=8.17%, 50=24.90%, 100=20.38%, 250=40.66% lat (msec) : 500=5.27%, 750=0.10%, 2000=0.03% cpu : usr=0.04%, sys=1.35%, ctx=5679, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=73.4KiB/s (75.2kB/s), 18.2KiB/s-18.6KiB/s (18.6kB/s-19.1kB/s), io=23.4MiB (24.6MB), run=324868-326996msec WRITE: bw=76.9KiB/s (78.7kB/s), 19.1KiB/s-19.4KiB/s (19.6kB/s-19.9kB/s), io=24.6MiB (25.7MB), run=324868-326996msec mix direct rw 16384 by fio with 4 jobs... mix buffer rw 16384 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145288: Fri Jun 12 01:35:09 2026 read: IOPS=9, BW=150KiB/s (154kB/s)(5920KiB/39491msec) clat (usec): min=37, max=269036, avg=51645.83, stdev=42055.96 lat (usec): min=37, max=269037, avg=51648.05, stdev=42055.77 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 68], 10.00th=[ 82], 20.00th=[ 15008], | 30.00th=[ 32637], 40.00th=[ 40633], 50.00th=[ 47973], 60.00th=[ 54264], | 70.00th=[ 64750], 80.00th=[ 78119], 90.00th=[100140], 95.00th=[123208], | 99.00th=[231736], 99.50th=[267387], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 30, max= 288, per=25.39%, avg=153.87, stdev=67.19, samples=75 iops : min= 1, max= 18, avg= 8.84, stdev= 4.27, samples=75 write: IOPS=10, BW=161KiB/s (165kB/s)(6368KiB/39491msec); 0 zone resets clat (usec): min=1763, max=368737, avg=51126.76, stdev=57041.93 lat (usec): min=1766, max=368740, avg=51129.92, stdev=57042.01 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 3228], 10.00th=[ 6194], 20.00th=[ 10552], | 30.00th=[ 14746], 40.00th=[ 21627], 50.00th=[ 32113], 60.00th=[ 44827], | 70.00th=[ 61604], 80.00th=[ 79168], 90.00th=[114820], 95.00th=[164627], | 99.00th=[304088], 99.50th=[362808], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 31, max= 346, per=25.29%, avg=161.38, stdev=79.32, samples=77 iops : min= 1, max= 21, avg= 9.32, stdev= 5.06, samples=77 lat (usec) : 50=0.65%, 100=6.51%, 250=1.56%, 750=0.13% lat (msec) : 2=0.91%, 4=2.34%, 10=7.16%, 20=10.55%, 50=27.86% lat (msec) : 100=30.73%, 250=10.68%, 500=0.91% cpu : usr=0.09%, sys=5.81%, ctx=1702, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145289: Fri Jun 12 01:35:09 2026 read: IOPS=10, BW=165KiB/s (169kB/s)(5744KiB/34869msec) clat (usec): min=43, max=252063, avg=53352.62, stdev=41027.25 lat (usec): min=44, max=252065, avg=53354.42, stdev=41027.53 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 74], 10.00th=[ 87], 20.00th=[ 22414], | 30.00th=[ 34866], 40.00th=[ 41681], 50.00th=[ 50070], 60.00th=[ 57934], | 70.00th=[ 67634], 80.00th=[ 78119], 90.00th=[101188], 95.00th=[123208], | 99.00th=[198181], 99.50th=[208667], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 318, per=27.09%, avg=164.19, stdev=61.20, samples=68 iops : min= 1, max= 19, avg= 9.50, stdev= 3.83, samples=68 write: IOPS=11, BW=188KiB/s (192kB/s)(6544KiB/34869msec); 0 zone resets clat (usec): min=1927, max=305495, avg=38119.60, stdev=38934.48 lat (usec): min=1929, max=305499, avg=38141.92, stdev=38930.19 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 8], | 30.00th=[ 13], 40.00th=[ 18], 50.00th=[ 26], 60.00th=[ 36], | 70.00th=[ 48], 80.00th=[ 64], 90.00th=[ 91], 95.00th=[ 108], | 99.00th=[ 167], 99.50th=[ 180], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 447, per=29.45%, avg=187.90, stdev=77.64, samples=68 iops : min= 1, max= 27, avg=11.00, stdev= 4.90, samples=68 lat (usec) : 50=0.39%, 100=5.73%, 250=1.43%, 500=0.39%, 750=0.13% lat (msec) : 2=0.65%, 4=5.60%, 10=7.68%, 20=10.16%, 50=29.82% lat (msec) : 100=29.17%, 250=8.59%, 500=0.26% cpu : usr=0.09%, sys=6.32%, ctx=1652, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145290: Fri Jun 12 01:35:09 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(6256KiB/37602msec) clat (usec): min=45, max=247902, avg=50824.70, stdev=38484.15 lat (usec): min=45, max=247904, avg=50838.51, stdev=38468.91 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 69], 10.00th=[ 80], 20.00th=[ 15008], | 30.00th=[ 32900], 40.00th=[ 40633], 50.00th=[ 47973], 60.00th=[ 56361], | 70.00th=[ 67634], 80.00th=[ 77071], 90.00th=[ 95945], 95.00th=[110625], | 99.00th=[185598], 99.50th=[206570], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 62, max= 381, per=27.71%, avg=167.95, stdev=81.37, samples=73 iops : min= 3, max= 23, avg= 9.74, stdev= 5.15, samples=73 write: IOPS=10, BW=160KiB/s (164kB/s)(6032KiB/37602msec); 0 zone resets clat (usec): min=1631, max=296044, avg=46777.37, stdev=46827.53 lat (usec): min=1632, max=296047, avg=46780.74, stdev=46827.60 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 3752], 10.00th=[ 5538], 20.00th=[ 8979], | 30.00th=[ 14353], 40.00th=[ 20841], 50.00th=[ 31589], 60.00th=[ 44827], | 70.00th=[ 61604], 80.00th=[ 74974], 90.00th=[105382], 95.00th=[133694], | 99.00th=[248513], 99.50th=[256902], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 62, max= 372, per=24.95%, avg=159.16, stdev=65.51, samples=73 iops : min= 3, max= 23, avg= 9.19, stdev= 4.19, samples=73 lat (usec) : 50=0.13%, 100=7.29%, 250=1.82%, 500=0.13%, 1000=0.13% lat (msec) : 2=0.91%, 4=2.21%, 10=8.07%, 20=8.98%, 50=28.26% lat (msec) : 100=32.29%, 250=9.38%, 500=0.39% cpu : usr=0.09%, sys=5.93%, ctx=1678, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145291: Fri Jun 12 01:35:09 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(6032KiB/34652msec) clat (usec): min=38, max=239237, avg=49769.00, stdev=37775.81 lat (usec): min=38, max=239239, avg=49786.21, stdev=37768.00 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 67], 10.00th=[ 81], 20.00th=[ 1631], | 30.00th=[ 32900], 40.00th=[ 40109], 50.00th=[ 46924], 60.00th=[ 55313], | 70.00th=[ 64226], 80.00th=[ 76022], 90.00th=[ 93848], 95.00th=[119014], | 99.00th=[181404], 99.50th=[187696], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 375, per=29.09%, avg=176.30, stdev=64.96, samples=67 iops : min= 1, max= 23, avg=10.27, stdev= 4.12, samples=67 write: IOPS=11, BW=181KiB/s (185kB/s)(6256KiB/34652msec); 0 zone resets clat (usec): min=1597, max=276370, avg=40444.05, stdev=41138.50 lat (usec): min=1599, max=276370, avg=40447.13, stdev=41138.51 clat percentiles (usec): | 1.00th=[ 1909], 5.00th=[ 2737], 10.00th=[ 4883], 20.00th=[ 7898], | 30.00th=[ 10945], 40.00th=[ 17171], 50.00th=[ 24773], 60.00th=[ 36439], | 70.00th=[ 51643], 80.00th=[ 72877], 90.00th=[ 96994], 95.00th=[111674], | 99.00th=[219153], 99.50th=[252707], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 31, max= 384, per=28.33%, avg=180.72, stdev=75.67, samples=68 iops : min= 1, max= 24, avg=10.54, stdev= 4.80, samples=68 lat (usec) : 50=0.26%, 100=7.42%, 250=1.56%, 750=0.26%, 1000=0.13% lat (msec) : 2=1.17%, 4=3.26%, 10=10.42%, 20=8.20%, 50=29.17% lat (msec) : 100=29.56%, 250=8.33%, 500=0.26% cpu : usr=0.08%, sys=6.12%, ctx=1528, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=607KiB/s (621kB/s), 150KiB/s-174KiB/s (154kB/s-178kB/s), io=23.4MiB (24.5MB), run=34652-39491msec WRITE: bw=638KiB/s (653kB/s), 160KiB/s-188KiB/s (164kB/s-192kB/s), io=24.6MiB (25.8MB), run=34652-39491msec fio: pid=145284, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=145283: Fri Jun 12 01:35:44 2026 read: IOPS=4, BW=77.9KiB/s (79.8kB/s)(5920KiB/75951msec) clat (msec): min=7, max=373, avg=43.18, stdev=41.05 lat (msec): min=7, max=373, avg=43.18, stdev=41.05 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 42], 80.00th=[ 61], 90.00th=[ 93], 95.00th=[ 125], | 99.00th=[ 239], 99.50th=[ 257], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 30, max= 415, per=29.90%, avg=88.22, stdev=61.20, samples=130 iops : min= 1, max= 25, avg= 4.71, stdev= 3.83, samples=130 write: IOPS=5, BW=83.8KiB/s (85.9kB/s)(6368KiB/75951msec); 0 zone resets clat (msec): min=39, max=501, avg=150.19, stdev=83.21 lat (msec): min=39, max=501, avg=150.19, stdev=83.21 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 67], 10.00th=[ 74], 20.00th=[ 85], | 30.00th=[ 95], 40.00th=[ 111], 50.00th=[ 125], 60.00th=[ 146], | 70.00th=[ 169], 80.00th=[ 201], 90.00th=[ 268], 95.00th=[ 347], | 99.00th=[ 464], 99.50th=[ 489], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 30, max= 192, per=28.03%, avg=85.50, stdev=42.79, samples=145 iops : min= 1, max= 12, avg= 4.54, stdev= 2.72, samples=145 lat (msec) : 10=0.91%, 20=11.20%, 50=25.00%, 100=23.31%, 250=33.07% lat (msec) : 500=6.38%, 750=0.13% cpu : usr=0.04%, sys=1.63%, ctx=1434, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=145284: Fri Jun 12 01:35:44 2026 read: IOPS=4, BW=68.4KiB/s (70.0kB/s)(4240KiB/62011msec) clat (msec): min=9, max=304, avg=53.98, stdev=47.08 lat (msec): min=9, max=304, avg=53.98, stdev=47.08 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 60], 80.00th=[ 85], 90.00th=[ 121], 95.00th=[ 155], | 99.00th=[ 234], 99.50th=[ 249], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 22, max= 252, per=30.41%, avg=89.71, stdev=54.67, samples=93 iops : min= 1, max= 15, avg= 4.78, stdev= 3.44, samples=93 write: IOPS=4, BW=73.5KiB/s (75.3kB/s)(4560KiB/62012msec); 0 zone resets clat (msec): min=50, max=503, avg=166.77, stdev=78.67 lat (msec): min=50, max=503, avg=166.78, stdev=78.67 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 80], 10.00th=[ 90], 20.00th=[ 105], | 30.00th=[ 117], 40.00th=[ 132], 50.00th=[ 144], 60.00th=[ 163], | 70.00th=[ 186], 80.00th=[ 230], 90.00th=[ 268], 95.00th=[ 330], | 99.00th=[ 477], 99.50th=[ 481], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 30, max= 159, per=24.37%, avg=74.32, stdev=34.17, samples=120 iops : min= 1, max= 9, avg= 3.83, stdev= 2.18, samples=120 lat (msec) : 10=0.18%, 20=9.44%, 50=22.32%, 100=18.51%, 250=41.56% lat (msec) : 500=7.62%, 750=0.18% cpu : usr=0.04%, sys=1.38%, ctx=951, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=266,285,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145285: Fri Jun 12 01:35:44 2026 read: IOPS=5, BW=83.6KiB/s (85.6kB/s)(6256KiB/74803msec) clat (msec): min=7, max=296, avg=45.74, stdev=42.63 lat (msec): min=7, max=298, avg=45.75, stdev=42.67 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 65], 90.00th=[ 99], 95.00th=[ 136], | 99.00th=[ 230], 99.50th=[ 249], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 351, per=33.12%, avg=97.71, stdev=66.09, samples=126 iops : min= 1, max= 21, avg= 5.32, stdev= 4.18, samples=126 write: IOPS=5, BW=80.6KiB/s (82.6kB/s)(6032KiB/74803msec); 0 zone resets clat (msec): min=54, max=642, avg=150.75, stdev=79.14 lat (msec): min=54, max=642, avg=150.76, stdev=79.14 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 69], 10.00th=[ 79], 20.00th=[ 91], | 30.00th=[ 104], 40.00th=[ 115], 50.00th=[ 132], 60.00th=[ 148], | 70.00th=[ 167], 80.00th=[ 194], 90.00th=[ 247], 95.00th=[ 326], | 99.00th=[ 430], 99.50th=[ 460], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 31, max= 192, per=26.94%, avg=82.16, stdev=39.84, samples=143 iops : min= 1, max= 12, avg= 4.33, stdev= 2.54, samples=143 lat (msec) : 10=0.39%, 20=12.50%, 50=23.83%, 100=22.79%, 250=35.68% lat (msec) : 500=4.69%, 750=0.13% cpu : usr=0.05%, sys=1.60%, ctx=1402, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145286: Fri Jun 12 01:35:44 2026 read: IOPS=4, BW=79.5KiB/s (81.5kB/s)(6032KiB/75828msec) clat (msec): min=7, max=468, avg=46.23, stdev=51.46 lat (msec): min=7, max=468, avg=46.24, stdev=51.46 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 87], 95.00th=[ 153], | 99.00th=[ 275], 99.50th=[ 368], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 30, max= 319, per=32.02%, avg=94.47, stdev=61.73, samples=124 iops : min= 1, max= 19, avg= 5.10, stdev= 3.89, samples=124 write: IOPS=5, BW=82.5KiB/s (84.5kB/s)(6256KiB/75828msec); 0 zone resets clat (msec): min=44, max=680, avg=148.98, stdev=75.78 lat (msec): min=44, max=680, avg=148.99, stdev=75.79 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 69], 10.00th=[ 79], 20.00th=[ 91], | 30.00th=[ 101], 40.00th=[ 115], 50.00th=[ 129], 60.00th=[ 144], | 70.00th=[ 163], 80.00th=[ 201], 90.00th=[ 257], 95.00th=[ 305], | 99.00th=[ 376], 99.50th=[ 422], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 30, max= 223, per=27.45%, avg=83.73, stdev=40.39, samples=146 iops : min= 1, max= 13, avg= 4.42, stdev= 2.59, samples=146 lat (msec) : 10=0.52%, 20=12.50%, 50=24.09%, 100=22.92%, 250=33.85% lat (msec) : 500=5.99%, 750=0.13% cpu : usr=0.05%, sys=1.55%, ctx=1427, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=296KiB/s (303kB/s), 68.4KiB/s-83.6KiB/s (70.0kB/s-85.6kB/s), io=21.9MiB (22.0MB), run=62011-75951msec WRITE: bw=306KiB/s (313kB/s), 73.5KiB/s-83.8KiB/s (75.3kB/s-85.9kB/s), io=22.7MiB (23.8MB), run=62012-75951msec mix direct rw 1048576 by fio with 4 jobs... mix buffer rw 1048576 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145307: Fri Jun 12 01:36:07 2026 read: IOPS=0, BW=729KiB/s (747kB/s)(7168KiB/9832msec) clat (usec): min=718, max=498521, avg=219710.29, stdev=180017.89 lat (usec): min=719, max=498524, avg=219721.72, stdev=180026.40 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 717], 10.00th=[ 717], 20.00th=[ 3359], | 30.00th=[200279], 40.00th=[200279], 50.00th=[227541], 60.00th=[244319], | 70.00th=[244319], 80.00th=[362808], 90.00th=[497026], 95.00th=[497026], | 99.00th=[497026], 99.50th=[497026], 99.90th=[497026], 99.95th=[497026], | 99.99th=[497026] bw ( KiB/s): min= 1954, max= 4096, per=100.00%, avg=2417.60, stdev=938.81, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 write: IOPS=0, BW=521KiB/s (533kB/s)(5120KiB/9832msec); 0 zone resets clat (msec): min=199, max=4040, avg=1626.62, stdev=1516.51 lat (msec): min=199, max=4040, avg=1626.74, stdev=1516.54 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 1989], 80.00th=[ 1989], 90.00th=[ 4044], 95.00th=[ 4044], | 99.00th=[ 4044], 99.50th=[ 4044], 99.90th=[ 4044], 99.95th=[ 4044], | 99.99th=[ 4044] bw ( KiB/s): min= 1996, max= 2043, per=74.30%, avg=2017.25, stdev=19.64, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=33.33%, 500=16.67%, 750=8.33%, 2000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=4.98%, ctx=146, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145308: Fri Jun 12 01:36:07 2026 read: IOPS=0, BW=194KiB/s (199kB/s)(2048KiB/10560msec) clat (msec): min=334, max=4263, avg=2299.04, stdev=2778.78 lat (msec): min=334, max=4263, avg=2299.05, stdev=2778.78 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 4279], | 70.00th=[ 4279], 80.00th=[ 4279], 90.00th=[ 4279], 95.00th=[ 4279], | 99.00th=[ 4279], 99.50th=[ 4279], 99.90th=[ 4279], 99.95th=[ 4279], | 99.99th=[ 4279] bw ( KiB/s): min= 1980, max= 2031, per=100.00%, avg=2005.50, stdev=36.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=0, BW=970KiB/s (993kB/s)(10.0MiB/10560msec); 0 zone resets clat (msec): min=145, max=1766, avg=590.27, stdev=491.12 lat (msec): min=145, max=1766, avg=592.16, stdev=490.78 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 228], | 30.00th=[ 239], 40.00th=[ 451], 50.00th=[ 472], 60.00th=[ 481], | 70.00th=[ 493], 80.00th=[ 518], 90.00th=[ 1116], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 1928, max= 4087, per=100.00%, avg=3007.33, stdev=1119.73, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=25.00%, 500=41.67%, 750=8.33%, 2000=16.67%, >=2000=8.33% cpu : usr=0.01%, sys=6.44%, ctx=619, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145309: Fri Jun 12 01:36:07 2026 read: IOPS=0, BW=672KiB/s (688kB/s)(6144KiB/9143msec) clat (msec): min=8, max=444, avg=333.56, stdev=165.57 lat (msec): min=8, max=444, avg=333.56, stdev=165.57 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 9], 10.00th=[ 9], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 414], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 1988, max= 4055, per=100.00%, avg=2514.50, stdev=1027.08, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=672KiB/s (688kB/s)(6144KiB/9143msec); 0 zone resets clat (msec): min=257, max=4547, avg=1141.07, stdev=1676.20 lat (msec): min=257, max=4548, avg=1141.35, stdev=1676.56 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 518], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 4530], 95.00th=[ 4530], | 99.00th=[ 4530], 99.50th=[ 4530], 99.90th=[ 4530], 99.95th=[ 4530], | 99.99th=[ 4530] bw ( KiB/s): min= 1928, max= 2039, per=73.47%, avg=1994.60, stdev=41.45, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 10=8.33%, 500=66.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.02%, sys=5.97%, ctx=225, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145310: Fri Jun 12 01:36:07 2026 read: IOPS=0, BW=549KiB/s (562kB/s)(5120KiB/9331msec) clat (usec): min=795, max=314919, avg=137179.05, stdev=151363.29 lat (usec): min=798, max=314922, avg=137181.36, stdev=151363.39 clat percentiles (usec): | 1.00th=[ 799], 5.00th=[ 799], 10.00th=[ 799], 20.00th=[ 799], | 30.00th=[ 3523], 40.00th=[ 3523], 50.00th=[ 85459], 60.00th=[ 85459], | 70.00th=[283116], 80.00th=[283116], 90.00th=[316670], 95.00th=[316670], | 99.00th=[316670], 99.50th=[316670], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 4055, max= 4079, per=100.00%, avg=4067.00, stdev=16.97, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=768KiB/s (787kB/s)(7168KiB/9331msec); 0 zone resets clat (msec): min=393, max=4792, avg=1196.03, stdev=1599.54 lat (msec): min=393, max=4792, avg=1196.16, stdev=1599.53 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 439], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 567], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 1020], 90.00th=[ 4799], 95.00th=[ 4799], | 99.00th=[ 4799], 99.50th=[ 4799], 99.90th=[ 4799], 99.95th=[ 4799], | 99.99th=[ 4799] bw ( KiB/s): min= 1980, max= 4015, per=88.67%, avg=2407.40, stdev=898.87, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 100=8.33%, 500=33.33%, 750=25.00%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.01%, sys=4.84%, ctx=207, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1939KiB/s (1986kB/s), 194KiB/s-729KiB/s (199kB/s-747kB/s), io=20.0MiB (20.0MB), run=9143-10560msec WRITE: bw=2715KiB/s (2780kB/s), 521KiB/s-970KiB/s (533kB/s-993kB/s), io=28.0MiB (29.4MB), run=9143-10560msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145312: Fri Jun 12 01:36:08 2026 read: IOPS=0, BW=653KiB/s (669kB/s)(7168KiB/10972msec) clat (msec): min=144, max=344, avg=201.43, stdev=71.90 lat (msec): min=144, max=344, avg=201.44, stdev=71.90 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 146], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 176], 60.00th=[ 211], | 70.00th=[ 211], 80.00th=[ 236], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 2039, max= 3465, per=100.00%, avg=2801.33, stdev=718.10, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=0, BW=467KiB/s (478kB/s)(5120KiB/10972msec); 0 zone resets clat (msec): min=263, max=4684, avg=1889.75, stdev=1860.41 lat (msec): min=264, max=4684, avg=1889.87, stdev=1860.42 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 676], 40.00th=[ 676], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 2903], 80.00th=[ 2903], 90.00th=[ 4665], 95.00th=[ 4665], | 99.00th=[ 4665], 99.50th=[ 4665], 99.90th=[ 4665], 99.95th=[ 4665], | 99.99th=[ 4665] bw ( KiB/s): min= 1732, max= 2043, per=78.13%, avg=1957.25, stdev=150.50, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=50.00%, 500=16.67%, 750=8.33%, 1000=8.33%, >=2000=16.67% cpu : usr=0.03%, sys=2.16%, ctx=101, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145313: Fri Jun 12 01:36:08 2026 read: IOPS=0, BW=179KiB/s (183kB/s)(2048KiB/11444msec) clat (msec): min=176, max=3739, avg=1957.76, stdev=2519.73 lat (msec): min=176, max=3739, avg=1957.76, stdev=2519.73 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 176], 60.00th=[ 3742], | 70.00th=[ 3742], 80.00th=[ 3742], 90.00th=[ 3742], 95.00th=[ 3742], | 99.00th=[ 3742], 99.50th=[ 3742], 99.90th=[ 3742], 99.95th=[ 3742], | 99.99th=[ 3742] bw ( KiB/s): min= 1712, max= 2000, per=100.00%, avg=1856.00, stdev=203.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=0, BW=895KiB/s (916kB/s)(10.0MiB/11444msec); 0 zone resets clat (msec): min=221, max=1643, avg=699.12, stdev=555.82 lat (msec): min=221, max=1644, avg=699.39, stdev=556.06 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 296], | 30.00th=[ 300], 40.00th=[ 305], 50.00th=[ 443], 60.00th=[ 443], | 70.00th=[ 542], 80.00th=[ 1250], 90.00th=[ 1552], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 1732, max= 4071, per=90.40%, avg=2264.57, stdev=803.30, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=16.67%, 500=41.67%, 750=8.33%, 2000=25.00%, >=2000=8.33% cpu : usr=0.01%, sys=2.16%, ctx=109, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145314: Fri Jun 12 01:36:08 2026 read: IOPS=0, BW=541KiB/s (554kB/s)(6144KiB/11360msec) clat (msec): min=126, max=1166, avg=452.28, stdev=395.16 lat (msec): min=126, max=1166, avg=452.29, stdev=395.16 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 215], 50.00th=[ 215], 60.00th=[ 376], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 1996, max= 2048, per=100.00%, avg=2020.20, stdev=21.65, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=0, BW=541KiB/s (554kB/s)(6144KiB/11360msec); 0 zone resets clat (msec): min=329, max=5207, avg=1375.51, stdev=1893.97 lat (msec): min=329, max=5208, avg=1376.31, stdev=1894.04 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 651], | 70.00th=[ 1070], 80.00th=[ 1070], 90.00th=[ 5201], 95.00th=[ 5201], | 99.00th=[ 5201], 99.50th=[ 5201], 99.90th=[ 5201], 99.95th=[ 5201], | 99.99th=[ 5201] bw ( KiB/s): min= 1756, max= 2019, per=78.00%, avg=1953.83, stdev=99.99, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 250=25.00%, 500=25.00%, 750=25.00%, 2000=16.67%, >=2000=8.33% cpu : usr=0.01%, sys=1.73%, ctx=117, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145315: Fri Jun 12 01:36:08 2026 read: IOPS=0, BW=461KiB/s (472kB/s)(5120KiB/11104msec) clat (msec): min=80, max=1006, avg=473.76, stdev=367.80 lat (msec): min=80, max=1006, avg=473.76, stdev=367.80 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 81], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1957, max= 4000, per=100.00%, avg=2658.67, stdev=1162.04, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=646KiB/s (661kB/s)(7168KiB/11104msec); 0 zone resets clat (msec): min=300, max=5624, avg=1200.02, stdev=1961.71 lat (msec): min=300, max=5624, avg=1200.34, stdev=1961.64 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 317], | 30.00th=[ 355], 40.00th=[ 355], 50.00th=[ 376], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 894], 90.00th=[ 5604], 95.00th=[ 5604], | 99.00th=[ 5604], 99.50th=[ 5604], 99.90th=[ 5604], 99.95th=[ 5604], | 99.99th=[ 5604] bw ( KiB/s): min= 2000, max= 4079, per=100.00%, avg=2836.00, stdev=1109.43, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 100=8.33%, 250=8.33%, 500=41.67%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.04%, sys=2.26%, ctx=105, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1790KiB/s (1833kB/s), 179KiB/s-653KiB/s (183kB/s-669kB/s), io=20.0MiB (20.0MB), run=10972-11444msec WRITE: bw=2505KiB/s (2566kB/s), 467KiB/s-895KiB/s (478kB/s-916kB/s), io=28.0MiB (29.4MB), run=10972-11444msec mix direct rw 4194304 by fio with 4 jobs... mix buffer rw 4194304 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145323: Fri Jun 12 01:36:24 2026 read: IOPS=0, BW=3840KiB/s (3932kB/s)(12.0MiB/3200msec) clat (msec): min=718, max=1313, avg=1041.93, stdev=300.99 lat (msec): min=718, max=1313, avg=1041.94, stdev=300.99 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.59%, ctx=54, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145325: Fri Jun 12 01:36:24 2026 read: IOPS=0, BW=985KiB/s (1009kB/s)(4096KiB/4158msec) clat (nsec): min=1118.5M, max=1118.5M, avg=1118511340.00, stdev= 0.00 lat (nsec): min=1118.5M, max=1118.5M, avg=1118513779.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1970KiB/s (2017kB/s)(8192KiB/4158msec); 0 zone resets clat (msec): min=1097, max=1886, avg=1492.27, stdev=557.83 lat (msec): min=1098, max=1887, avg=1492.94, stdev=557.60 clat percentiles (msec): | 1.00th=[ 1099], 5.00th=[ 1099], 10.00th=[ 1099], 20.00th=[ 1099], | 30.00th=[ 1099], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1888], | 70.00th=[ 1888], 80.00th=[ 1888], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=2.57%, ctx=35, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145326: Fri Jun 12 01:36:24 2026 write: IOPS=0, BW=2974KiB/s (3045kB/s)(12.0MiB/4132msec); 0 zone resets clat (msec): min=386, max=1833, avg=1333.64, stdev=821.02 lat (msec): min=386, max=1834, avg=1334.36, stdev=821.16 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 1787], 50.00th=[ 1787], 60.00th=[ 1787], | 70.00th=[ 1838], 80.00th=[ 1838], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.70%, ctx=33, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145327: Fri Jun 12 01:36:24 2026 write: IOPS=0, BW=3874KiB/s (3967kB/s)(12.0MiB/3172msec); 0 zone resets clat (msec): min=330, max=1905, avg=1038.61, stdev=799.37 lat (msec): min=331, max=1906, avg=1039.31, stdev=799.37 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=4.29%, ctx=50, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3940KiB/s (4035kB/s), 985KiB/s-3840KiB/s (1009kB/s-3932kB/s), io=16.0MiB (16.8MB), run=3200-4158msec WRITE: bw=7881KiB/s (8070kB/s), 1970KiB/s-3874KiB/s (2017kB/s-3967kB/s), io=32.0MiB (33.6MB), run=3172-4158msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145328: Fri Jun 12 01:36:24 2026 read: IOPS=0, BW=4062KiB/s (4160kB/s)(12.0MiB/3025msec) clat (msec): min=770, max=1084, avg=963.72, stdev=169.41 lat (msec): min=770, max=1084, avg=963.72, stdev=169.41 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1036], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8110, max= 8159, per=100.00%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=14.12%, ctx=250, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145329: Fri Jun 12 01:36:24 2026 read: IOPS=0, BW=1146KiB/s (1174kB/s)(4096KiB/3573msec) clat (nsec): min=1006.1M, max=1006.1M, avg=1006100332.00, stdev= 0.00 lat (nsec): min=1006.1M, max=1006.1M, avg=1006102544.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1003], 5.00th=[ 1003], 10.00th=[ 1003], 20.00th=[ 1003], | 30.00th=[ 1003], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2293KiB/s (2348kB/s)(8192KiB/3573msec); 0 zone resets clat (msec): min=919, max=1596, avg=1257.94, stdev=478.40 lat (msec): min=920, max=1596, avg=1258.50, stdev=478.38 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 1603], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.03%, sys=4.12%, ctx=117, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145330: Fri Jun 12 01:36:24 2026 write: IOPS=0, BW=2524KiB/s (2584kB/s)(12.0MiB/4869msec); 0 zone resets clat (msec): min=398, max=2170, avg=1550.47, stdev=998.75 lat (msec): min=398, max=2170, avg=1551.79, stdev=999.43 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 2089], 50.00th=[ 2089], 60.00th=[ 2089], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8110, max= 8175, per=100.00%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=2.20%, ctx=36, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145331: Fri Jun 12 01:36:24 2026 write: IOPS=0, BW=3537KiB/s (3622kB/s)(12.0MiB/3474msec); 0 zone resets clat (msec): min=821, max=1299, avg=1103.17, stdev=250.38 lat (msec): min=821, max=1300, avg=1103.64, stdev=250.28 clat percentiles (msec): | 1.00th=[ 818], 5.00th=[ 818], 10.00th=[ 818], 20.00th=[ 818], | 30.00th=[ 818], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 8078, max= 8094, per=100.00%, avg=8086.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.12%, sys=5.90%, ctx=73, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4586KiB/s (4696kB/s), 1146KiB/s-4062KiB/s (1174kB/s-4160kB/s), io=16.0MiB (16.8MB), run=3025-3573msec WRITE: bw=6730KiB/s (6891kB/s), 2293KiB/s-3537KiB/s (2348kB/s-3622kB/s), io=32.0MiB (33.6MB), run=3474-4869msec