== sanity test 398b: DIO and buffer IO race ============== 02:57:28 (1787468248) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.77717 s, 6.5 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=179189: Sun Aug 23 03:00:19 2026 read: IOPS=10, BW=41.1KiB/s (42.1kB/s)(5992KiB/145827msec) clat (usec): min=31, max=341848, avg=53602.59, stdev=37498.70 lat (usec): min=31, max=341849, avg=53607.16, stdev=37502.59 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 72], 10.00th=[ 18220], 20.00th=[ 26870], | 30.00th=[ 32900], 40.00th=[ 38536], 50.00th=[ 45351], 60.00th=[ 52691], | 70.00th=[ 64750], 80.00th=[ 79168], 90.00th=[ 98042], 95.00th=[119014], | 99.00th=[185598], 99.50th=[221250], 99.90th=[325059], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 6, max= 102, per=25.04%, avg=40.82, stdev=17.18, samples=285 iops : min= 1, max= 25, avg= 9.56, stdev= 4.34, samples=285 write: IOPS=10, BW=43.2KiB/s (44.2kB/s)(6296KiB/145827msec); 0 zone resets clat (usec): min=834, max=1319.8k, avg=41174.37, stdev=54801.16 lat (usec): min=834, max=1319.8k, avg=41179.10, stdev=54799.41 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1123], 10.00th=[ 1254], | 20.00th=[ 3032], 30.00th=[ 6063], 40.00th=[ 13698], | 50.00th=[ 26084], 60.00th=[ 38536], 70.00th=[ 53740], | 80.00th=[ 73925], 90.00th=[ 102237], 95.00th=[ 126354], | 99.00th=[ 193987], 99.50th=[ 217056], 99.90th=[ 375391], | 99.95th=[1317012], 99.99th=[1317012] bw ( KiB/s): min= 7, max= 134, per=25.25%, avg=43.18, stdev=19.43, samples=283 iops : min= 1, max= 33, avg=10.16, stdev= 4.91, samples=283 lat (usec) : 50=0.33%, 100=2.54%, 250=0.07%, 500=0.03%, 1000=0.33% lat (msec) : 2=7.75%, 4=4.04%, 10=6.48%, 20=6.90%, 50=33.69% lat (msec) : 100=27.70%, 250=9.90%, 500=0.23%, 2000=0.03% cpu : usr=0.06%, sys=4.26%, ctx=5969, 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=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=179190: Sun Aug 23 03:00:19 2026 read: IOPS=10, BW=40.7KiB/s (41.7kB/s)(5940KiB/145876msec) clat (usec): min=34, max=342074, avg=52500.20, stdev=34417.97 lat (usec): min=34, max=342075, avg=52503.43, stdev=34419.34 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 110], 10.00th=[ 18482], 20.00th=[ 25560], | 30.00th=[ 32113], 40.00th=[ 39584], 50.00th=[ 45876], 60.00th=[ 53216], | 70.00th=[ 63701], 80.00th=[ 76022], 90.00th=[ 94897], 95.00th=[117965], | 99.00th=[158335], 99.50th=[181404], 99.90th=[312476], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 6, max= 103, per=25.03%, avg=40.79, stdev=16.32, samples=282 iops : min= 1, max= 25, avg= 9.55, stdev= 4.13, samples=282 write: IOPS=10, BW=43.5KiB/s (44.6kB/s)(6348KiB/145876msec); 0 zone resets clat (usec): min=925, max=1269.3k, avg=42380.22, stdev=56766.98 lat (usec): min=927, max=1269.3k, avg=42390.01, stdev=56770.35 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1123], 10.00th=[ 1254], | 20.00th=[ 2573], 30.00th=[ 5800], 40.00th=[ 12387], | 50.00th=[ 26870], 60.00th=[ 38536], 70.00th=[ 53740], | 80.00th=[ 74974], 90.00th=[ 106431], 95.00th=[ 132645], | 99.00th=[ 223347], 99.50th=[ 256902], 99.90th=[ 346031], | 99.95th=[1266680], 99.99th=[1266680] bw ( KiB/s): min= 7, max= 111, per=25.24%, avg=43.16, stdev=20.98, samples=284 iops : min= 1, max= 27, avg=10.15, stdev= 5.31, samples=284 lat (usec) : 50=0.42%, 100=1.95%, 250=0.13%, 500=0.03%, 1000=0.29% lat (msec) : 2=8.76%, 4=3.97%, 10=6.38%, 20=6.74%, 50=33.17% lat (msec) : 100=28.16%, 250=9.57%, 500=0.39%, 2000=0.03% cpu : usr=0.06%, sys=4.10%, ctx=5959, 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=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=179191: Sun Aug 23 03:00:19 2026 read: IOPS=10, BW=41.7KiB/s (42.7kB/s)(6028KiB/144473msec) clat (usec): min=32, max=282279, avg=51723.61, stdev=35661.58 lat (usec): min=32, max=282280, avg=51725.73, stdev=35661.04 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 70], 10.00th=[ 16450], 20.00th=[ 24773], | 30.00th=[ 31327], 40.00th=[ 37487], 50.00th=[ 45351], 60.00th=[ 53740], | 70.00th=[ 64226], 80.00th=[ 76022], 90.00th=[ 93848], 95.00th=[112722], | 99.00th=[179307], 99.50th=[200279], 99.90th=[274727], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 102, per=25.54%, avg=41.62, stdev=18.76, samples=281 iops : min= 1, max= 25, avg= 9.77, stdev= 4.73, samples=281 write: IOPS=10, BW=43.3KiB/s (44.4kB/s)(6260KiB/144473msec); 0 zone resets clat (usec): min=868, max=1269.7k, avg=42078.00, stdev=53754.99 lat (usec): min=868, max=1269.7k, avg=42080.10, stdev=53755.06 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1303], | 20.00th=[ 2999], 30.00th=[ 6783], 40.00th=[ 15795], | 50.00th=[ 30802], 60.00th=[ 41681], 70.00th=[ 55313], | 80.00th=[ 72877], 90.00th=[ 102237], 95.00th=[ 128451], | 99.00th=[ 204473], 99.50th=[ 217056], 99.90th=[ 287310], | 99.95th=[1266680], 99.99th=[1266680] bw ( KiB/s): min= 7, max= 157, per=25.24%, avg=43.16, stdev=20.09, samples=281 iops : min= 1, max= 39, avg=10.16, stdev= 5.06, samples=281 lat (usec) : 50=0.29%, 100=2.77%, 250=0.26%, 500=0.10%, 1000=0.23% lat (msec) : 2=8.04%, 4=3.94%, 10=6.12%, 20=6.74%, 50=33.30% lat (msec) : 100=28.68%, 250=9.41%, 500=0.10%, 2000=0.03% cpu : usr=0.07%, sys=4.07%, ctx=5963, 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=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=179192: Sun Aug 23 03:00:19 2026 read: IOPS=10, BW=41.2KiB/s (42.2kB/s)(6052KiB/146756msec) clat (usec): min=32, max=313371, avg=51914.84, stdev=36782.11 lat (usec): min=32, max=313373, avg=51916.06, stdev=36782.11 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 67], 10.00th=[ 15533], 20.00th=[ 24773], | 30.00th=[ 31065], 40.00th=[ 36963], 50.00th=[ 44303], 60.00th=[ 52691], | 70.00th=[ 63701], 80.00th=[ 76022], 90.00th=[ 95945], 95.00th=[115868], | 99.00th=[187696], 99.50th=[204473], 99.90th=[287310], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 104, per=25.31%, avg=41.26, stdev=17.53, samples=285 iops : min= 1, max= 26, avg= 9.68, stdev= 4.45, samples=285 write: IOPS=10, BW=42.5KiB/s (43.5kB/s)(6236KiB/146756msec); 0 zone resets clat (usec): min=887, max=1296.3k, avg=43381.36, stdev=55637.14 lat (usec): min=888, max=1296.3k, avg=43385.28, stdev=55636.49 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1156], 10.00th=[ 1319], | 20.00th=[ 3130], 30.00th=[ 6587], 40.00th=[ 17957], | 50.00th=[ 30802], 60.00th=[ 42206], 70.00th=[ 55837], | 80.00th=[ 74974], 90.00th=[ 105382], 95.00th=[ 132645], | 99.00th=[ 191890], 99.50th=[ 235930], 99.90th=[ 320865], | 99.95th=[1300235], 99.99th=[1300235] bw ( KiB/s): min= 7, max= 100, per=24.60%, avg=42.07, stdev=19.70, samples=288 iops : min= 1, max= 25, avg= 9.88, stdev= 4.97, samples=288 lat (usec) : 50=0.39%, 100=2.77%, 250=0.23%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.23% lat (msec) : 2=7.52%, 4=4.30%, 10=5.24%, 20=7.42%, 50=33.63% lat (msec) : 100=28.06%, 250=9.77%, 500=0.26%, 2000=0.03% cpu : usr=0.06%, sys=4.12%, ctx=6042, 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=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=164KiB/s (168kB/s), 40.7KiB/s-41.7KiB/s (41.7kB/s-42.7kB/s), io=23.4MiB (24.6MB), run=144473-146756msec WRITE: bw=171KiB/s (175kB/s), 42.5KiB/s-43.5KiB/s (43.5kB/s-44.6kB/s), io=24.6MiB (25.7MB), run=144473-146756msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179194: Sun Aug 23 03:01:06 2026 read: IOPS=7, BW=31.1KiB/s (31.8kB/s)(5992KiB/192708msec) clat (msec): min=5, max=1401, avg=52.15, stdev=62.31 lat (msec): min=5, max=1401, avg=52.15, stdev=62.31 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 41], | 70.00th=[ 53], 80.00th=[ 77], 90.00th=[ 120], 95.00th=[ 159], | 99.00th=[ 253], 99.50th=[ 300], 99.90th=[ 481], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7, max= 135, per=25.75%, avg=31.93, stdev=24.38, samples=364 iops : min= 1, max= 33, avg= 7.32, stdev= 6.14, samples=364 write: IOPS=8, BW=32.7KiB/s (33.5kB/s)(6296KiB/192708msec); 0 zone resets clat (msec): min=10, max=524, avg=72.69, stdev=57.95 lat (msec): min=10, max=524, avg=72.69, stdev=57.95 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 52], 60.00th=[ 65], | 70.00th=[ 85], 80.00th=[ 110], 90.00th=[ 150], 95.00th=[ 186], | 99.00th=[ 292], 99.50th=[ 334], 99.90th=[ 464], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 7, max= 119, per=25.09%, avg=32.61, stdev=24.12, samples=374 iops : min= 1, max= 29, avg= 7.49, stdev= 6.07, samples=374 lat (msec) : 10=1.79%, 20=13.25%, 50=43.23%, 100=23.40%, 250=16.89% lat (msec) : 500=1.37%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.48%, ctx=4922, 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=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=179195: Sun Aug 23 03:01:06 2026 read: IOPS=7, BW=30.9KiB/s (31.7kB/s)(5940KiB/192070msec) clat (msec): min=5, max=1511, avg=49.00, stdev=60.87 lat (msec): min=5, max=1511, avg=49.00, stdev=60.87 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 71], 90.00th=[ 111], 95.00th=[ 146], | 99.00th=[ 213], 99.50th=[ 279], 99.90th=[ 518], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7, max= 150, per=26.43%, avg=32.77, stdev=25.34, samples=351 iops : min= 1, max= 37, avg= 7.53, stdev= 6.37, samples=351 write: IOPS=8, BW=33.0KiB/s (33.8kB/s)(6348KiB/192070msec); 0 zone resets clat (msec): min=11, max=527, avg=75.05, stdev=57.79 lat (msec): min=11, max=527, avg=75.06, stdev=57.78 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 69], | 70.00th=[ 89], 80.00th=[ 115], 90.00th=[ 155], 95.00th=[ 188], | 99.00th=[ 271], 99.50th=[ 326], 99.90th=[ 447], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 7, max= 120, per=25.60%, avg=33.28, stdev=22.71, samples=368 iops : min= 1, max= 30, avg= 7.66, stdev= 5.73, samples=368 lat (msec) : 10=1.92%, 20=13.35%, 50=42.02%, 100=24.32%, 250=17.42% lat (msec) : 500=0.88%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.41%, ctx=4716, 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=179196: Sun Aug 23 03:01:06 2026 read: IOPS=7, BW=31.4KiB/s (32.2kB/s)(6028KiB/191772msec) clat (msec): min=5, max=378, avg=50.69, stdev=50.08 lat (msec): min=5, max=378, avg=50.69, stdev=50.08 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 52], 80.00th=[ 73], 90.00th=[ 120], 95.00th=[ 161], | 99.00th=[ 230], 99.50th=[ 271], 99.90th=[ 363], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 7, max= 119, per=26.12%, avg=32.39, stdev=23.53, samples=360 iops : min= 1, max= 29, avg= 7.43, stdev= 5.91, samples=360 write: IOPS=8, BW=32.6KiB/s (33.4kB/s)(6260KiB/191772msec); 0 zone resets clat (msec): min=14, max=1535, avg=73.62, stdev=65.59 lat (msec): min=14, max=1535, avg=73.62, stdev=65.59 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 66], | 70.00th=[ 87], 80.00th=[ 113], 90.00th=[ 144], 95.00th=[ 176], | 99.00th=[ 268], 99.50th=[ 330], 99.90th=[ 460], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7, max= 136, per=25.31%, avg=32.90, stdev=23.72, samples=368 iops : min= 1, max= 34, avg= 7.56, stdev= 5.96, samples=368 lat (msec) : 10=1.86%, 20=12.53%, 50=43.16%, 100=23.80%, 250=17.58% lat (msec) : 500=1.04%, 2000=0.03% cpu : usr=0.05%, sys=1.31%, ctx=4541, 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=179197: Sun Aug 23 03:01:06 2026 read: IOPS=7, BW=31.5KiB/s (32.3kB/s)(6052KiB/191830msec) clat (msec): min=5, max=517, avg=49.39, stdev=51.23 lat (msec): min=5, max=517, avg=49.39, stdev=51.23 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 72], 90.00th=[ 115], 95.00th=[ 153], | 99.00th=[ 234], 99.50th=[ 309], 99.90th=[ 485], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 7, max= 143, per=26.71%, avg=33.12, stdev=25.34, samples=354 iops : min= 1, max= 35, avg= 7.62, stdev= 6.37, samples=354 write: IOPS=8, BW=32.5KiB/s (33.3kB/s)(6236KiB/191830msec); 0 zone resets clat (msec): min=10, max=1527, avg=74.98, stdev=68.36 lat (msec): min=10, max=1527, avg=74.98, stdev=68.36 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 66], | 70.00th=[ 85], 80.00th=[ 112], 90.00th=[ 159], 95.00th=[ 192], | 99.00th=[ 264], 99.50th=[ 300], 99.90th=[ 464], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7, max= 119, per=25.11%, avg=32.64, stdev=23.54, samples=370 iops : min= 1, max= 29, avg= 7.49, stdev= 5.92, samples=370 lat (msec) : 10=2.12%, 20=13.51%, 50=42.48%, 100=23.54%, 250=17.25% lat (msec) : 500=1.04%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=1.39%, ctx=4561, 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=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=125KiB/s (128kB/s), 30.9KiB/s-31.5KiB/s (31.7kB/s-32.3kB/s), io=23.4MiB (24.6MB), run=191772-192708msec WRITE: bw=130KiB/s (134kB/s), 32.5KiB/s-33.0KiB/s (33.3kB/s-33.8kB/s), io=24.6MiB (25.7MB), run=191772-192708msec 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=179251: Sun Aug 23 03:02:02 2026 read: IOPS=8, BW=141KiB/s (145kB/s)(5920KiB/41945msec) clat (usec): min=36, max=345620, avg=60198.78, stdev=44349.18 lat (usec): min=36, max=345621, avg=60200.04, stdev=44349.21 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 64], 10.00th=[ 157], 20.00th=[ 31589], | 30.00th=[ 38011], 40.00th=[ 44827], 50.00th=[ 52691], 60.00th=[ 61604], | 70.00th=[ 72877], 80.00th=[ 84411], 90.00th=[109577], 95.00th=[129500], | 99.00th=[242222], 99.50th=[291505], 99.90th=[346031], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 30, max= 280, per=25.57%, avg=141.43, stdev=57.80, samples=82 iops : min= 1, max= 17, avg= 8.09, stdev= 3.62, samples=82 write: IOPS=9, BW=152KiB/s (155kB/s)(6368KiB/41945msec); 0 zone resets clat (usec): min=1381, max=321982, avg=48433.98, stdev=51445.23 lat (usec): min=1381, max=321984, avg=48436.57, stdev=51445.21 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1876], 10.00th=[ 3097], 20.00th=[ 6390], | 30.00th=[ 11207], 40.00th=[ 19268], 50.00th=[ 29754], 60.00th=[ 43779], | 70.00th=[ 62129], 80.00th=[ 89654], 90.00th=[120062], 95.00th=[149947], | 99.00th=[246416], 99.50th=[283116], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 21, max= 409, per=26.46%, avg=154.00, stdev=73.76, samples=81 iops : min= 1, max= 25, avg= 8.89, stdev= 4.63, samples=81 lat (usec) : 50=0.52%, 100=3.91%, 250=0.39%, 500=0.13%, 750=0.26% lat (msec) : 2=2.99%, 4=3.78%, 10=8.46%, 20=6.90%, 50=27.47% lat (msec) : 100=30.60%, 250=13.80%, 500=0.78% cpu : usr=0.05%, sys=4.15%, ctx=1617, 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=179252: Sun Aug 23 03:02:02 2026 read: IOPS=8, BW=133KiB/s (136kB/s)(5744KiB/43286msec) clat (usec): min=34, max=513062, avg=64672.94, stdev=47794.67 lat (usec): min=34, max=513064, avg=64674.24, stdev=47794.77 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 64], 10.00th=[ 17695], 20.00th=[ 32113], | 30.00th=[ 41157], 40.00th=[ 49546], 50.00th=[ 56886], 60.00th=[ 66847], | 70.00th=[ 77071], 80.00th=[ 94897], 90.00th=[116917], 95.00th=[137364], | 99.00th=[225444], 99.50th=[261096], 99.90th=[513803], 99.95th=[513803], | 99.99th=[513803] bw ( KiB/s): min= 30, max= 311, per=23.71%, avg=131.11, stdev=60.52, samples=84 iops : min= 1, max= 19, avg= 7.43, stdev= 3.83, samples=84 write: IOPS=9, BW=151KiB/s (155kB/s)(6544KiB/43286msec); 0 zone resets clat (usec): min=1337, max=337767, avg=48253.38, stdev=50659.02 lat (usec): min=1339, max=337769, avg=48280.86, stdev=50641.93 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1844], 10.00th=[ 3032], 20.00th=[ 6521], | 30.00th=[ 11076], 40.00th=[ 19530], 50.00th=[ 33424], 60.00th=[ 45351], | 70.00th=[ 63701], 80.00th=[ 82314], 90.00th=[121111], 95.00th=[141558], | 99.00th=[217056], 99.50th=[248513], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 30, max= 288, per=25.41%, avg=147.87, stdev=62.23, samples=84 iops : min= 1, max= 18, avg= 8.48, stdev= 3.97, samples=84 lat (usec) : 50=0.65%, 100=3.65%, 250=0.13% lat (msec) : 2=3.78%, 4=2.60%, 10=7.29%, 20=8.20%, 50=26.95% lat (msec) : 100=29.95%, 250=16.15%, 500=0.52%, 750=0.13% cpu : usr=0.06%, sys=4.36%, ctx=1666, 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=179253: Sun Aug 23 03:02:02 2026 read: IOPS=9, BW=149KiB/s (152kB/s)(6256KiB/42082msec) clat (usec): min=39, max=393344, avg=61560.42, stdev=46848.91 lat (usec): min=39, max=393345, avg=61562.76, stdev=46848.25 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 66], 10.00th=[ 15008], 20.00th=[ 29230], | 30.00th=[ 37487], 40.00th=[ 46924], 50.00th=[ 54789], 60.00th=[ 63701], | 70.00th=[ 74974], 80.00th=[ 85459], 90.00th=[109577], 95.00th=[137364], | 99.00th=[231736], 99.50th=[383779], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 30, max= 318, per=26.92%, avg=148.88, stdev=61.24, samples=82 iops : min= 1, max= 19, avg= 8.56, stdev= 3.87, samples=82 write: IOPS=8, BW=143KiB/s (147kB/s)(6032KiB/42082msec); 0 zone resets clat (usec): min=1402, max=239176, avg=47531.09, stdev=45608.82 lat (usec): min=1404, max=239177, avg=47533.96, stdev=45611.12 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1860], 10.00th=[ 3097], 20.00th=[ 6456], | 30.00th=[ 13435], 40.00th=[ 22938], 50.00th=[ 33817], 60.00th=[ 47973], | 70.00th=[ 63701], 80.00th=[ 81265], 90.00th=[110625], 95.00th=[145753], | 99.00th=[193987], 99.50th=[214959], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 346, per=25.02%, avg=145.64, stdev=72.71, samples=80 iops : min= 1, max= 21, avg= 8.36, stdev= 4.58, samples=80 lat (usec) : 50=0.78%, 100=3.78%, 250=0.13% lat (msec) : 2=2.86%, 4=2.60%, 10=7.81%, 20=6.25%, 50=28.13% lat (msec) : 100=34.64%, 250=12.76%, 500=0.26% cpu : usr=0.06%, sys=4.06%, ctx=1579, 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=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=179254: Sun Aug 23 03:02:02 2026 read: IOPS=9, BW=147KiB/s (150kB/s)(6032KiB/41054msec) clat (usec): min=37, max=269522, avg=61277.11, stdev=46708.74 lat (usec): min=38, max=269523, avg=61278.35, stdev=46708.74 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 61], 10.00th=[ 76], 20.00th=[ 28967], | 30.00th=[ 38536], 40.00th=[ 45876], 50.00th=[ 52167], 60.00th=[ 61604], | 70.00th=[ 73925], 80.00th=[ 91751], 90.00th=[113771], 95.00th=[164627], | 99.00th=[219153], 99.50th=[261096], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 30, max= 286, per=26.40%, avg=145.98, stdev=53.42, samples=80 iops : min= 1, max= 17, avg= 8.38, stdev= 3.35, samples=80 write: IOPS=9, BW=152KiB/s (156kB/s)(6256KiB/41054msec); 0 zone resets clat (usec): min=1022, max=265847, avg=45189.60, stdev=47286.56 lat (usec): min=1023, max=265850, avg=45196.13, stdev=47283.10 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1811], 10.00th=[ 2540], 20.00th=[ 5407], | 30.00th=[ 11207], 40.00th=[ 19006], 50.00th=[ 30016], 60.00th=[ 40109], | 70.00th=[ 57934], 80.00th=[ 81265], 90.00th=[114820], 95.00th=[139461], | 99.00th=[200279], 99.50th=[244319], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 31, max= 572, per=26.49%, avg=154.19, stdev=84.40, samples=79 iops : min= 1, max= 35, avg= 8.90, stdev= 5.33, samples=79 lat (usec) : 50=0.65%, 100=5.08%, 250=0.39%, 500=0.26%, 1000=0.13% lat (msec) : 2=4.56%, 4=3.39%, 10=6.51%, 20=7.03%, 50=28.52% lat (msec) : 100=28.26%, 250=14.84%, 500=0.39% cpu : usr=0.06%, sys=4.19%, ctx=1575, 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=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=553KiB/s (567kB/s), 133KiB/s-149KiB/s (136kB/s-152kB/s), io=23.4MiB (24.5MB), run=41054-43286msec WRITE: bw=582KiB/s (596kB/s), 143KiB/s-152KiB/s (147kB/s-156kB/s), io=24.6MiB (25.8MB), run=41054-43286msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179256: Sun Aug 23 03:02:18 2026 read: IOPS=6, BW=101KiB/s (104kB/s)(5920KiB/58537msec) clat (msec): min=5, max=356, avg=59.17, stdev=52.50 lat (msec): min=5, max=356, avg=59.17, stdev=52.50 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 20], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 35], 50.00th=[ 40], 60.00th=[ 50], | 70.00th=[ 60], 80.00th=[ 78], 90.00th=[ 130], 95.00th=[ 176], | 99.00th=[ 239], 99.50th=[ 321], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 30, max= 477, per=25.76%, avg=104.09, stdev=71.12, samples=111 iops : min= 1, max= 29, avg= 5.71, stdev= 4.49, samples=111 write: IOPS=6, BW=109KiB/s (111kB/s)(6368KiB/58537msec); 0 zone resets clat (msec): min=12, max=430, avg=91.72, stdev=64.10 lat (msec): min=12, max=430, avg=91.73, stdev=64.10 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 28], 10.00th=[ 34], 20.00th=[ 45], | 30.00th=[ 54], 40.00th=[ 62], 50.00th=[ 72], 60.00th=[ 84], | 70.00th=[ 105], 80.00th=[ 131], 90.00th=[ 178], 95.00th=[ 213], | 99.00th=[ 330], 99.50th=[ 380], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 28, max= 345, per=26.16%, avg=111.17, stdev=65.00, samples=112 iops : min= 1, max= 21, avg= 6.15, stdev= 4.11, samples=112 lat (msec) : 10=0.52%, 20=5.60%, 50=36.20%, 100=33.46%, 250=21.88% lat (msec) : 500=2.34% cpu : usr=0.04%, sys=1.20%, ctx=1129, 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=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=179257: Sun Aug 23 03:02:18 2026 read: IOPS=6, BW=97.1KiB/s (99.4kB/s)(5744KiB/59162msec) clat (msec): min=5, max=308, avg=62.73, stdev=52.57 lat (msec): min=5, max=308, avg=62.73, stdev=52.57 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 30], 40.00th=[ 36], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 72], 80.00th=[ 93], 90.00th=[ 140], 95.00th=[ 176], | 99.00th=[ 268], 99.50th=[ 300], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 27, max= 379, per=26.81%, avg=108.32, stdev=73.56, samples=103 iops : min= 1, max= 23, avg= 5.98, stdev= 4.66, samples=103 write: IOPS=6, BW=111KiB/s (113kB/s)(6544KiB/59162msec); 0 zone resets clat (msec): min=13, max=627, avg=88.75, stdev=69.68 lat (msec): min=13, max=627, avg=88.76, stdev=69.68 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 30], 10.00th=[ 35], 20.00th=[ 43], | 30.00th=[ 51], 40.00th=[ 59], 50.00th=[ 66], 60.00th=[ 81], | 70.00th=[ 96], 80.00th=[ 125], 90.00th=[ 161], 95.00th=[ 207], | 99.00th=[ 393], 99.50th=[ 439], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 30, max= 349, per=26.81%, avg=113.93, stdev=65.13, samples=112 iops : min= 1, max= 21, avg= 6.32, stdev= 4.10, samples=112 lat (msec) : 10=0.91%, 20=4.69%, 50=36.46%, 100=35.03%, 250=20.57% lat (msec) : 500=2.21%, 750=0.13% cpu : usr=0.04%, sys=1.31%, ctx=1152, 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=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=179258: Sun Aug 23 03:02:18 2026 read: IOPS=6, BW=107KiB/s (109kB/s)(6256KiB/58599msec) clat (msec): min=8, max=470, avg=62.68, stdev=59.80 lat (msec): min=8, max=470, avg=62.68, stdev=59.80 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 41], 60.00th=[ 49], | 70.00th=[ 64], 80.00th=[ 87], 90.00th=[ 150], 95.00th=[ 190], | 99.00th=[ 284], 99.50th=[ 330], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 30, max= 344, per=27.16%, avg=109.71, stdev=73.81, samples=112 iops : min= 1, max= 21, avg= 6.06, stdev= 4.69, samples=112 write: IOPS=6, BW=103KiB/s (105kB/s)(6032KiB/58599msec); 0 zone resets clat (msec): min=17, max=479, avg=89.11, stdev=59.40 lat (msec): min=17, max=479, avg=89.11, stdev=59.40 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 31], 10.00th=[ 34], 20.00th=[ 45], | 30.00th=[ 51], 40.00th=[ 60], 50.00th=[ 72], 60.00th=[ 87], | 70.00th=[ 103], 80.00th=[ 132], 90.00th=[ 167], 95.00th=[ 194], | 99.00th=[ 284], 99.50th=[ 405], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 31, max= 381, per=25.07%, avg=106.55, stdev=61.86, samples=110 iops : min= 1, max= 23, avg= 5.86, stdev= 3.90, samples=110 lat (msec) : 10=0.26%, 20=6.77%, 50=38.15%, 100=31.38%, 250=21.88% lat (msec) : 500=1.56% cpu : usr=0.03%, sys=1.30%, ctx=1160, 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=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=179259: Sun Aug 23 03:02:18 2026 read: IOPS=6, BW=104KiB/s (106kB/s)(6032KiB/58018msec) clat (msec): min=7, max=274, avg=60.26, stdev=48.88 lat (msec): min=7, max=274, avg=60.26, stdev=48.88 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 36], 50.00th=[ 43], 60.00th=[ 54], | 70.00th=[ 70], 80.00th=[ 88], 90.00th=[ 129], 95.00th=[ 174], | 99.00th=[ 232], 99.50th=[ 251], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 415, per=27.43%, avg=110.80, stdev=69.89, samples=106 iops : min= 1, max= 25, avg= 6.13, stdev= 4.41, samples=106 write: IOPS=6, BW=108KiB/s (110kB/s)(6256KiB/58018msec); 0 zone resets clat (msec): min=13, max=616, avg=89.14, stdev=61.69 lat (msec): min=13, max=616, avg=89.14, stdev=61.69 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 28], 10.00th=[ 34], 20.00th=[ 44], | 30.00th=[ 53], 40.00th=[ 61], 50.00th=[ 70], 60.00th=[ 85], | 70.00th=[ 107], 80.00th=[ 130], 90.00th=[ 161], 95.00th=[ 197], | 99.00th=[ 288], 99.50th=[ 376], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 29, max= 477, per=26.06%, avg=110.75, stdev=70.37, samples=111 iops : min= 1, max= 29, avg= 6.11, stdev= 4.45, samples=111 lat (msec) : 10=0.39%, 20=7.42%, 50=33.98%, 100=32.68%, 250=24.48% lat (msec) : 500=0.91%, 750=0.13% cpu : usr=0.04%, sys=1.22%, ctx=1112, 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=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=405KiB/s (415kB/s), 97.1KiB/s-107KiB/s (99.4kB/s-109kB/s), io=23.4MiB (24.5MB), run=58018-59162msec WRITE: bw=426KiB/s (436kB/s), 103KiB/s-111KiB/s (105kB/s-113kB/s), io=24.6MiB (25.8MB), run=58018-59162msec 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=179282: Sun Aug 23 03:02:41 2026 read: IOPS=1, BW=1321KiB/s (1353kB/s)(7168KiB/5427msec) clat (usec): min=479, max=815722, avg=278123.51, stdev=284034.10 lat (usec): min=480, max=815724, avg=278124.81, stdev=284034.42 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 791], | 30.00th=[208667], 40.00th=[208667], 50.00th=[214959], 60.00th=[250610], | 70.00th=[250610], 80.00th=[455082], 90.00th=[817890], 95.00th=[817890], | 99.00th=[817890], 99.50th=[817890], 99.90th=[817890], 99.95th=[817890], | 99.99th=[817890] bw ( KiB/s): min= 1802, max= 3938, per=76.76%, avg=2329.60, stdev=903.72, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=943KiB/s (966kB/s)(5120KiB/5427msec); 0 zone resets clat (msec): min=293, max=844, avg=566.33, stdev=195.63 lat (msec): min=293, max=844, avg=566.41, stdev=195.65 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 542], 40.00th=[ 542], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1802, max= 3938, per=60.81%, avg=2583.67, stdev=1177.53, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33%, 1000=8.33% lat (msec) : 250=16.67%, 500=25.00%, 750=25.00%, 1000=16.67% cpu : usr=0.00%, sys=4.55%, ctx=120, 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=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=179283: Sun Aug 23 03:02:41 2026 read: IOPS=0, BW=304KiB/s (311kB/s)(2048KiB/6747msec) clat (usec): min=628, max=372300, avg=186464.62, stdev=262811.43 lat (usec): min=649, max=372302, avg=186476.13, stdev=262798.68 clat percentiles (usec): | 1.00th=[ 627], 5.00th=[ 627], 10.00th=[ 627], 20.00th=[ 627], | 30.00th=[ 627], 40.00th=[ 627], 50.00th=[ 627], 60.00th=[371196], | 70.00th=[371196], 80.00th=[371196], 90.00th=[371196], 95.00th=[371196], | 99.00th=[371196], 99.50th=[371196], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 1577, max= 1805, per=55.72%, avg=1691.00, stdev=161.22, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1518KiB/s (1554kB/s)(10.0MiB/6747msec); 0 zone resets clat (msec): min=123, max=1812, avg=619.63, stdev=489.08 lat (msec): min=123, max=1812, avg=619.70, stdev=489.09 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 125], | 30.00th=[ 363], 40.00th=[ 397], 50.00th=[ 493], 60.00th=[ 592], | 70.00th=[ 617], 80.00th=[ 785], 90.00th=[ 902], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 1802, max= 4055, per=58.12%, avg=2469.43, stdev=942.55, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (usec) : 750=8.33% lat (msec) : 250=16.67%, 500=33.33%, 750=16.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.04%, sys=8.00%, ctx=167, 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=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=179284: Sun Aug 23 03:02:41 2026 read: IOPS=1, BW=1159KiB/s (1187kB/s)(6144KiB/5302msec) clat (usec): min=775, max=794319, avg=352699.29, stdev=306717.22 lat (usec): min=776, max=794321, avg=352700.40, stdev=306717.27 clat percentiles (usec): | 1.00th=[ 775], 5.00th=[ 775], 10.00th=[ 775], 20.00th=[ 3916], | 30.00th=[ 3916], 40.00th=[375391], 50.00th=[375391], 60.00th=[442500], | 70.00th=[497026], 80.00th=[497026], 90.00th=[792724], 95.00th=[792724], | 99.00th=[792724], 99.50th=[792724], 99.90th=[792724], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 1802, max= 3771, per=77.16%, avg=2341.75, stdev=955.69, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1159KiB/s (1187kB/s)(6144KiB/5302msec); 0 zone resets clat (msec): min=313, max=765, avg=482.70, stdev=180.72 lat (msec): min=313, max=765, avg=482.85, stdev=180.72 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 435], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1519, max= 2011, per=44.43%, avg=1888.00, stdev=207.26, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 500=58.33%, 750=8.33%, 1000=16.67% cpu : usr=0.02%, sys=7.96%, ctx=152, 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=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=179285: Sun Aug 23 03:02:41 2026 read: IOPS=0, BW=893KiB/s (914kB/s)(5120KiB/5735msec) clat (usec): min=475, max=253471, avg=53650.04, stdev=111731.87 lat (usec): min=477, max=253472, avg=53651.24, stdev=111731.94 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 478], | 30.00th=[ 2040], 40.00th=[ 2040], 50.00th=[ 5604], 60.00th=[ 5604], | 70.00th=[ 6652], 80.00th=[ 6652], 90.00th=[252707], 95.00th=[252707], | 99.00th=[252707], 99.50th=[252707], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 7301, max= 7301, per=100.00%, avg=7301.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1250KiB/s (1280kB/s)(7168KiB/5735msec); 0 zone resets clat (msec): min=331, max=1261, avg=655.54, stdev=367.09 lat (msec): min=331, max=1261, avg=655.88, stdev=366.92 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 351], | 30.00th=[ 393], 40.00th=[ 393], 50.00th=[ 443], 60.00th=[ 877], | 70.00th=[ 877], 80.00th=[ 936], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 1805, max= 2039, per=45.24%, avg=1922.33, stdev=98.27, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (usec) : 500=8.33% lat (msec) : 4=8.33%, 10=16.67%, 500=41.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.02%, sys=6.57%, ctx=119, 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=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=3035KiB/s (3108kB/s), 304KiB/s-1321KiB/s (311kB/s-1353kB/s), io=20.0MiB (20.0MB), run=5302-6747msec WRITE: bw=4250KiB/s (4352kB/s), 943KiB/s-1518KiB/s (966kB/s-1554kB/s), io=28.0MiB (29.4MB), run=5302-6747msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179278: Sun Aug 23 03:02:43 2026 read: IOPS=0, BW=790KiB/s (808kB/s)(7168KiB/9079msec) clat (msec): min=163, max=1542, avg=731.52, stdev=498.11 lat (msec): min=163, max=1542, avg=731.53, stdev=498.11 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 218], | 30.00th=[ 485], 40.00th=[ 485], 50.00th=[ 659], 60.00th=[ 978], | 70.00th=[ 978], 80.00th=[ 1083], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 1965, max= 2043, per=89.19%, avg=2011.33, stdev=25.56, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=564KiB/s (577kB/s)(5120KiB/9079msec); 0 zone resets clat (msec): min=231, max=2312, avg=673.25, stdev=916.77 lat (msec): min=231, max=2312, avg=673.44, stdev=916.70 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 232], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 2011, max= 4023, per=79.92%, avg=2524.00, stdev=999.43, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=33.33%, 500=25.00%, 750=8.33%, 1000=8.33%, 2000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.01%, sys=2.16%, ctx=77, 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=179279: Sun Aug 23 03:02:43 2026 read: IOPS=0, BW=235KiB/s (241kB/s)(2048KiB/8719msec) clat (msec): min=521, max=562, avg=541.63, stdev=29.00 lat (msec): min=521, max=562, avg=541.63, stdev=29.00 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 2011, max= 2019, per=89.36%, avg=2015.00, stdev= 5.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1174KiB/s (1203kB/s)(10.0MiB/8719msec); 0 zone resets clat (msec): min=243, max=2458, avg=723.40, stdev=666.73 lat (msec): min=243, max=2458, avg=723.79, stdev=666.55 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 257], | 30.00th=[ 264], 40.00th=[ 376], 50.00th=[ 535], 60.00th=[ 634], | 70.00th=[ 651], 80.00th=[ 693], 90.00th=[ 1116], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 1780, max= 4087, per=70.97%, avg=2241.25, stdev=750.23, samples=8 iops : min= 1, max= 3, avg= 1.25, stdev= 0.71, samples=8 lat (msec) : 250=8.33%, 500=25.00%, 750=50.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.20%, ctx=138, 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=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=179280: Sun Aug 23 03:02:43 2026 read: IOPS=0, BW=884KiB/s (906kB/s)(6144KiB/6948msec) clat (msec): min=208, max=1490, avg=478.44, stdev=501.41 lat (msec): min=208, max=1490, avg=478.44, stdev=501.41 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 317], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 2019, max= 4079, per=100.00%, avg=3353.00, stdev=1156.78, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=884KiB/s (906kB/s)(6144KiB/6948msec); 0 zone resets clat (msec): min=280, max=1436, avg=667.91, stdev=444.70 lat (msec): min=280, max=1436, avg=667.99, stdev=444.70 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 760], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 1780, max= 2828, per=68.45%, avg=2161.50, stdev=458.39, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 250=25.00%, 500=41.67%, 1000=16.67%, 2000=16.67% cpu : usr=0.00%, sys=2.17%, ctx=85, 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=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=179281: Sun Aug 23 03:02:43 2026 read: IOPS=1, BW=1308KiB/s (1339kB/s)(5120KiB/3915msec) clat (msec): min=148, max=540, avg=329.23, stdev=182.45 lat (msec): min=148, max=540, avg=329.23, stdev=182.45 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 502], 80.00th=[ 502], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 3561, max= 4079, per=100.00%, avg=3820.00, stdev=366.28, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1831KiB/s (1875kB/s)(7168KiB/3915msec); 0 zone resets clat (msec): min=145, max=425, avg=293.50, stdev=84.58 lat (msec): min=145, max=425, avg=293.58, stdev=84.58 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 257], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 296], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 342], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 2019, max= 3930, per=83.01%, avg=2621.60, stdev=873.31, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 250=25.00%, 500=58.33%, 750=16.67% cpu : usr=0.00%, sys=2.63%, ctx=56, 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=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=2256KiB/s (2310kB/s), 235KiB/s-1308KiB/s (241kB/s-1339kB/s), io=20.0MiB (20.0MB), run=3915-9079msec WRITE: bw=3158KiB/s (3234kB/s), 564KiB/s-1831KiB/s (577kB/s-1875kB/s), io=28.0MiB (29.4MB), run=3915-9079msec 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=179294: Sun Aug 23 03:03:08 2026 read: IOPS=0, BW=2122KiB/s (2173kB/s)(12.0MiB/5791msec) clat (msec): min=724, max=3765, avg=1877.38, stdev=1648.13 lat (msec): min=724, max=3765, avg=1877.38, stdev=1648.13 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 3775], 80.00th=[ 3775], 90.00th=[ 3775], 95.00th=[ 3775], | 99.00th=[ 3775], 99.50th=[ 3775], 99.90th=[ 3775], 99.95th=[ 3775], | 99.99th=[ 3775] bw ( KiB/s): min= 7876, max= 8000, per=100.00%, avg=7938.00, stdev=87.68, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=0.83%, ctx=32, majf=0, minf=10 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=179295: Sun Aug 23 03:03:08 2026 read: IOPS=0, BW=626KiB/s (641kB/s)(4096KiB/6548msec) clat (nsec): min=4358.4M, max=4358.4M, avg=4358394221.00, stdev= 0.00 lat (nsec): min=4358.4M, max=4358.4M, avg=4358396696.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4329], 5.00th=[ 4329], 10.00th=[ 4329], 20.00th=[ 4329], | 30.00th=[ 4329], 40.00th=[ 4329], 50.00th=[ 4329], 60.00th=[ 4329], | 70.00th=[ 4329], 80.00th=[ 4329], 90.00th=[ 4329], 95.00th=[ 4329], | 99.00th=[ 4329], 99.50th=[ 4329], 99.90th=[ 4329], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1251KiB/s (1281kB/s)(8192KiB/6548msec); 0 zone resets clat (msec): min=904, max=1097, avg=1000.89, stdev=136.34 lat (msec): min=904, max=1097, avg=1001.25, stdev=136.34 clat percentiles (msec): | 1.00th=[ 902], 5.00th=[ 902], 10.00th=[ 902], 20.00th=[ 902], | 30.00th=[ 902], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 1099], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7816, max= 7816, per=100.00%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=1.48%, ctx=57, 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=179297: Sun Aug 23 03:03:08 2026 write: IOPS=0, BW=1800KiB/s (1844kB/s)(12.0MiB/6825msec); 0 zone resets clat (msec): min=487, max=5062, avg=2178.94, stdev=2509.71 lat (msec): min=488, max=5062, avg=2180.09, stdev=2509.08 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 5067], 80.00th=[ 5067], 90.00th=[ 5067], 95.00th=[ 5067], | 99.00th=[ 5067], 99.50th=[ 5067], 99.90th=[ 5067], 99.95th=[ 5067], | 99.99th=[ 5067] bw ( KiB/s): min=14550, max=14550, per=100.00%, avg=14550.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.62%, ctx=99, majf=0, minf=10 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=179299: Sun Aug 23 03:03:08 2026 write: IOPS=0, BW=2036KiB/s (2085kB/s)(12.0MiB/6036msec); 0 zone resets clat (msec): min=634, max=4382, avg=1954.36, stdev=2105.32 lat (msec): min=635, max=4382, avg=1954.68, stdev=2105.32 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 4396], 80.00th=[ 4396], 90.00th=[ 4396], 95.00th=[ 4396], | 99.00th=[ 4396], 99.50th=[ 4396], 99.90th=[ 4396], 99.95th=[ 4396], | 99.99th=[ 4396] bw ( KiB/s): min= 7861, max= 8031, per=100.00%, avg=7946.00, stdev=120.21, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.87%, ctx=55, majf=0, minf=10 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=2502KiB/s (2562kB/s), 626KiB/s-2122KiB/s (641kB/s-2173kB/s), io=16.0MiB (16.8MB), run=5791-6548msec WRITE: bw=4801KiB/s (4916kB/s), 1251KiB/s-2036KiB/s (1281kB/s-2085kB/s), io=32.0MiB (33.6MB), run=6036-6825msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179296: Sun Aug 23 03:03:09 2026 read: IOPS=0, BW=1837KiB/s (1881kB/s)(12.0MiB/6688msec) clat (msec): min=1086, max=4249, avg=2158.69, stdev=1810.85 lat (msec): min=1086, max=4249, avg=2158.69, stdev=1810.85 clat percentiles (msec): | 1.00th=[ 1083], 5.00th=[ 1083], 10.00th=[ 1083], 20.00th=[ 1083], | 30.00th=[ 1083], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 4245], 80.00th=[ 4245], 90.00th=[ 4245], 95.00th=[ 4245], | 99.00th=[ 4245], 99.50th=[ 4245], 99.90th=[ 4245], 99.95th=[ 4245], | 99.99th=[ 4245] bw ( KiB/s): min= 7585, max= 8143, per=100.00%, avg=7864.00, stdev=394.57, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.03%, sys=5.67%, ctx=384, 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=179298: Sun Aug 23 03:03:09 2026 read: IOPS=0, BW=1580KiB/s (1618kB/s)(4096KiB/2592msec) clat (nsec): min=1258.8M, max=1258.8M, avg=1258848794.00, stdev= 0.00 lat (nsec): min=1258.9M, max=1258.9M, avg=1258851753.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1267], 5.00th=[ 1267], 10.00th=[ 1267], 20.00th=[ 1267], | 30.00th=[ 1267], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] 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=3160KiB/s (3236kB/s)(8192KiB/2592msec); 0 zone resets clat (msec): min=500, max=674, avg=587.36, stdev=123.50 lat (msec): min=501, max=674, avg=588.10, stdev=122.90 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 676], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.19%, sys=8.61%, ctx=127, majf=0, minf=10 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=179300: Sun Aug 23 03:03:09 2026 write: IOPS=0, BW=1690KiB/s (1730kB/s)(12.0MiB/7273msec); 0 zone resets clat (msec): min=244, max=5481, avg=2308.29, stdev=2789.01 lat (msec): min=244, max=5481, avg=2308.68, stdev=2788.97 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 5470], 80.00th=[ 5470], 90.00th=[ 5470], 95.00th=[ 5470], | 99.00th=[ 5470], 99.50th=[ 5470], 99.90th=[ 5470], 99.95th=[ 5470], | 99.99th=[ 5470] bw ( KiB/s): min= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.01%, sys=1.75%, ctx=53, 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=179301: Sun Aug 23 03:03:09 2026 write: IOPS=0, BW=1909KiB/s (1955kB/s)(12.0MiB/6437msec); 0 zone resets clat (msec): min=537, max=4240, avg=2022.77, stdev=1957.08 lat (msec): min=537, max=4240, avg=2023.12, stdev=1957.06 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 4245], 80.00th=[ 4245], 90.00th=[ 4245], 95.00th=[ 4245], | 99.00th=[ 4245], 99.50th=[ 4245], 99.90th=[ 4245], 99.95th=[ 4245], | 99.99th=[ 4245] bw ( KiB/s): min= 8047, max= 8126, per=100.00%, avg=8086.50, stdev=55.86, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.09%, sys=2.39%, ctx=61, 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=2450KiB/s (2509kB/s), 1580KiB/s-1837KiB/s (1618kB/s-1881kB/s), io=16.0MiB (16.8MB), run=2592-6688msec WRITE: bw=4505KiB/s (4614kB/s), 1690KiB/s-3160KiB/s (1730kB/s-3236kB/s), io=32.0MiB (33.6MB), run=2592-7273msec