== sanity test 398b: DIO and buffer IO race ============== 14:01:18 (1783447278) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.10014 s, 16.2 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=179364: Tue Jul 7 14:02:41 2026 read: IOPS=20, BW=81.5KiB/s (83.4kB/s)(5992KiB/73563msec) clat (usec): min=44, max=733146, avg=26672.69, stdev=23824.08 lat (usec): min=45, max=733147, avg=26674.95, stdev=23824.04 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 9503], 10.00th=[ 11731], 20.00th=[ 14484], | 30.00th=[ 17433], 40.00th=[ 20055], 50.00th=[ 23462], 60.00th=[ 26870], | 70.00th=[ 31327], 80.00th=[ 35914], 90.00th=[ 43779], 95.00th=[ 51643], | 99.00th=[ 81265], 99.50th=[ 91751], 99.90th=[170918], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 23, max= 144, per=25.03%, avg=81.61, stdev=23.14, samples=145 iops : min= 5, max= 36, avg=19.87, stdev= 5.81, samples=145 write: IOPS=21, BW=85.6KiB/s (87.6kB/s)(6296KiB/73563msec); 0 zone resets clat (usec): min=1089, max=152403, avg=21134.73, stdev=18820.60 lat (usec): min=1090, max=152404, avg=21137.99, stdev=18824.55 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 2147], 10.00th=[ 2704], 20.00th=[ 4113], | 30.00th=[ 7767], 40.00th=[ 12911], 50.00th=[ 16909], 60.00th=[ 21103], | 70.00th=[ 26608], 80.00th=[ 34866], 90.00th=[ 45351], 95.00th=[ 55837], | 99.00th=[ 82314], 99.50th=[ 99091], 99.90th=[149947], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 31, max= 166, per=25.30%, avg=86.26, stdev=26.92, samples=144 iops : min= 7, max= 41, avg=21.04, stdev= 6.79, samples=144 lat (usec) : 50=0.10%, 100=0.94%, 250=0.52%, 500=0.03%, 750=0.07% lat (msec) : 2=1.95%, 4=7.94%, 10=8.82%, 20=28.39%, 50=44.40% lat (msec) : 100=6.48%, 250=0.33%, 750=0.03% cpu : usr=0.10%, sys=13.31%, ctx=7900, 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=179365: Tue Jul 7 14:02:41 2026 read: IOPS=20, BW=82.4KiB/s (84.4kB/s)(5940KiB/72063msec) clat (usec): min=51, max=129289, avg=26299.00, stdev=14397.44 lat (usec): min=53, max=129291, avg=26300.51, stdev=14397.32 clat percentiles (usec): | 1.00th=[ 77], 5.00th=[ 9634], 10.00th=[ 12125], 20.00th=[ 15139], | 30.00th=[ 17695], 40.00th=[ 20317], 50.00th=[ 23987], 60.00th=[ 27395], | 70.00th=[ 31065], 80.00th=[ 35914], 90.00th=[ 43254], 95.00th=[ 51119], | 99.00th=[ 79168], 99.50th=[ 87557], 99.90th=[113771], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 7, max= 135, per=25.37%, avg=82.69, stdev=22.95, samples=142 iops : min= 1, max= 33, avg=20.13, stdev= 5.80, samples=142 write: IOPS=22, BW=88.1KiB/s (90.2kB/s)(6348KiB/72063msec); 0 zone resets clat (usec): min=1046, max=703420, avg=20586.84, stdev=24358.50 lat (usec): min=1052, max=703421, avg=20588.74, stdev=24358.32 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1909], 10.00th=[ 2606], 20.00th=[ 4080], | 30.00th=[ 6652], 40.00th=[ 12518], 50.00th=[ 16581], 60.00th=[ 21103], | 70.00th=[ 26608], 80.00th=[ 33817], 90.00th=[ 44303], 95.00th=[ 52167], | 99.00th=[ 73925], 99.50th=[ 86508], 99.90th=[139461], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 23, max= 183, per=25.87%, avg=88.23, stdev=30.06, samples=142 iops : min= 5, max= 45, avg=21.53, stdev= 7.55, samples=142 lat (usec) : 100=0.62%, 250=0.52% lat (msec) : 2=2.80%, 4=7.06%, 10=9.99%, 20=27.86%, 50=45.41% lat (msec) : 100=5.47%, 250=0.23%, 750=0.03% cpu : usr=0.11%, sys=13.53%, ctx=8000, 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=179366: Tue Jul 7 14:02:41 2026 read: IOPS=20, BW=82.0KiB/s (84.0kB/s)(6028KiB/72630msec) clat (usec): min=36, max=714863, avg=26729.02, stdev=23088.29 lat (usec): min=37, max=714864, avg=26734.65, stdev=23089.07 clat percentiles (usec): | 1.00th=[ 73], 5.00th=[ 9503], 10.00th=[ 11731], 20.00th=[ 14877], | 30.00th=[ 17433], 40.00th=[ 20317], 50.00th=[ 23725], 60.00th=[ 27395], | 70.00th=[ 31589], 80.00th=[ 35914], 90.00th=[ 43254], 95.00th=[ 51643], | 99.00th=[ 76022], 99.50th=[ 86508], 99.90th=[135267], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 23, max= 136, per=25.49%, avg=83.11, stdev=23.10, samples=143 iops : min= 5, max= 34, avg=20.26, stdev= 5.84, samples=143 write: IOPS=21, BW=86.2KiB/s (88.3kB/s)(6260KiB/72630msec); 0 zone resets clat (usec): min=1173, max=168650, avg=20473.74, stdev=18283.38 lat (usec): min=1174, max=168652, avg=20475.46, stdev=18283.33 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 2114], 10.00th=[ 2737], 20.00th=[ 4080], | 30.00th=[ 6325], 40.00th=[ 11469], 50.00th=[ 16319], 60.00th=[ 20317], | 70.00th=[ 26346], 80.00th=[ 34866], 90.00th=[ 45876], 95.00th=[ 55837], | 99.00th=[ 73925], 99.50th=[ 84411], 99.90th=[135267], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 7, max= 151, per=25.16%, avg=85.79, stdev=25.98, samples=144 iops : min= 1, max= 37, avg=20.92, stdev= 6.53, samples=144 lat (usec) : 50=0.16%, 100=0.62%, 250=0.62%, 500=0.13%, 750=0.03% lat (msec) : 2=2.18%, 4=7.68%, 10=10.38%, 20=27.21%, 50=44.34% lat (msec) : 100=6.41%, 250=0.20%, 750=0.03% cpu : usr=0.12%, sys=13.69%, ctx=7974, 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=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=179367: Tue Jul 7 14:02:41 2026 read: IOPS=20, BW=82.8KiB/s (84.8kB/s)(6052KiB/73100msec) clat (usec): min=45, max=705760, avg=26221.20, stdev=23103.97 lat (usec): min=45, max=705761, avg=26224.47, stdev=23103.67 clat percentiles (usec): | 1.00th=[ 74], 5.00th=[ 9241], 10.00th=[ 11994], 20.00th=[ 15139], | 30.00th=[ 17433], 40.00th=[ 20317], 50.00th=[ 22676], 60.00th=[ 26346], | 70.00th=[ 30016], 80.00th=[ 34341], 90.00th=[ 43254], 95.00th=[ 53216], | 99.00th=[ 74974], 99.50th=[ 86508], 99.90th=[191890], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 136, per=25.32%, avg=82.55, stdev=24.21, samples=145 iops : min= 1, max= 34, avg=20.10, stdev= 6.10, samples=145 write: IOPS=21, BW=85.3KiB/s (87.4kB/s)(6236KiB/73100msec); 0 zone resets clat (usec): min=1009, max=203574, avg=21234.35, stdev=19312.62 lat (usec): min=1010, max=203575, avg=21235.91, stdev=19312.78 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1942], 10.00th=[ 2638], 20.00th=[ 3982], | 30.00th=[ 7046], 40.00th=[ 13042], 50.00th=[ 17433], 60.00th=[ 21103], | 70.00th=[ 26870], 80.00th=[ 34341], 90.00th=[ 47449], 95.00th=[ 56886], | 99.00th=[ 84411], 99.50th=[ 92799], 99.90th=[143655], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 23, max= 208, per=24.92%, avg=84.97, stdev=29.10, samples=145 iops : min= 5, max= 52, avg=20.71, stdev= 7.31, samples=145 lat (usec) : 50=0.16%, 100=0.75%, 250=0.72%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=2.73%, 4=7.45%, 10=8.43%, 20=27.86%, 50=44.63% lat (msec) : 100=6.77%, 250=0.33%, 750=0.03% cpu : usr=0.12%, sys=13.46%, ctx=7931, 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=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=326KiB/s (334kB/s), 81.5KiB/s-82.0KiB/s (83.4kB/s-84.0kB/s), io=23.4MiB (24.6MB), run=72063-73563msec WRITE: bw=342KiB/s (350kB/s), 85.3KiB/s-88.1KiB/s (87.4kB/s-90.2kB/s), io=24.6MiB (25.7MB), run=72063-73563msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179368: Tue Jul 7 14:03:00 2026 read: IOPS=16, BW=64.7KiB/s (66.3kB/s)(5992KiB/92582msec) clat (msec): min=4, max=721, avg=24.75, stdev=27.17 lat (msec): min=4, max=721, avg=24.75, stdev=27.17 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 36], 90.00th=[ 54], 95.00th=[ 68], | 99.00th=[ 95], 99.50th=[ 116], 99.90th=[ 157], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 15, max= 200, per=25.17%, avg=64.94, stdev=40.25, samples=182 iops : min= 3, max= 50, avg=15.69, stdev=10.14, samples=182 write: IOPS=17, BW=68.0KiB/s (69.6kB/s)(6296KiB/92582msec); 0 zone resets clat (msec): min=9, max=186, avg=35.10, stdev=22.52 lat (msec): min=9, max=186, avg=35.11, stdev=22.52 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 52], 90.00th=[ 65], 95.00th=[ 77], | 99.00th=[ 115], 99.50th=[ 140], 99.90th=[ 180], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 7, max= 184, per=25.02%, avg=67.81, stdev=38.91, samples=183 iops : min= 1, max= 46, avg=16.41, stdev= 9.80, samples=183 lat (msec) : 10=10.32%, 20=33.59%, 50=39.75%, 100=15.07%, 250=1.24% lat (msec) : 750=0.03% cpu : usr=0.10%, sys=5.83%, ctx=5414, 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=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=179369: Tue Jul 7 14:03:00 2026 read: IOPS=16, BW=64.1KiB/s (65.6kB/s)(5940KiB/92729msec) clat (msec): min=4, max=715, avg=24.49, stdev=27.60 lat (msec): min=4, max=715, avg=24.49, stdev=27.60 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 35], 90.00th=[ 56], 95.00th=[ 68], | 99.00th=[ 103], 99.50th=[ 127], 99.90th=[ 218], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 200, per=24.75%, avg=63.85, stdev=40.73, samples=183 iops : min= 1, max= 50, avg=15.42, stdev=10.26, samples=183 write: IOPS=17, BW=68.5KiB/s (70.1kB/s)(6348KiB/92729msec); 0 zone resets clat (msec): min=8, max=185, avg=35.35, stdev=22.47 lat (msec): min=8, max=185, avg=35.35, stdev=22.47 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 14], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 52], 90.00th=[ 66], 95.00th=[ 80], | 99.00th=[ 116], 99.50th=[ 138], 99.90th=[ 150], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 7, max= 184, per=25.14%, avg=68.12, stdev=38.27, samples=183 iops : min= 1, max= 46, avg=16.49, stdev= 9.63, samples=183 lat (msec) : 10=10.84%, 20=33.14%, 50=39.13%, 100=15.49%, 250=1.37% lat (msec) : 750=0.03% cpu : usr=0.10%, sys=5.87%, ctx=5431, 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=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=179370: Tue Jul 7 14:03:00 2026 read: IOPS=16, BW=65.4KiB/s (66.0kB/s)(6028KiB/92191msec) clat (msec): min=5, max=177, avg=23.85, stdev=20.07 lat (msec): min=5, max=177, avg=23.85, stdev=20.07 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 25], 80.00th=[ 35], 90.00th=[ 52], 95.00th=[ 69], | 99.00th=[ 97], 99.50th=[ 111], 99.90th=[ 129], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 7, max= 208, per=25.27%, avg=65.19, stdev=39.30, samples=182 iops : min= 1, max= 52, avg=15.75, stdev= 9.87, samples=182 write: IOPS=16, BW=67.9KiB/s (69.5kB/s)(6260KiB/92191msec); 0 zone resets clat (msec): min=7, max=775, avg=35.78, stdev=29.37 lat (msec): min=7, max=775, avg=35.79, stdev=29.37 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 14], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 52], 90.00th=[ 64], 95.00th=[ 80], | 99.00th=[ 120], 99.50th=[ 133], 99.90th=[ 192], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 15, max= 176, per=24.95%, avg=67.63, stdev=38.91, samples=182 iops : min= 3, max= 44, avg=16.36, stdev= 9.80, samples=182 lat (msec) : 10=10.29%, 20=35.48%, 50=37.79%, 100=15.04%, 250=1.37% lat (msec) : 1000=0.03% cpu : usr=0.09%, sys=5.76%, ctx=5443, 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=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=179371: Tue Jul 7 14:03:00 2026 read: IOPS=16, BW=65.4KiB/s (66.9kB/s)(6052KiB/92572msec) clat (msec): min=5, max=213, avg=24.69, stdev=21.29 lat (msec): min=5, max=213, avg=24.69, stdev=21.29 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 37], 90.00th=[ 56], 95.00th=[ 70], | 99.00th=[ 104], 99.50th=[ 112], 99.90th=[ 126], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 7, max= 232, per=25.44%, avg=65.64, stdev=39.40, samples=182 iops : min= 1, max= 58, avg=15.87, stdev= 9.92, samples=182 write: IOPS=16, BW=67.4KiB/s (68.0kB/s)(6236KiB/92572msec); 0 zone resets clat (msec): min=9, max=776, avg=35.26, stdev=29.21 lat (msec): min=9, max=776, avg=35.26, stdev=29.21 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 50], 90.00th=[ 64], 95.00th=[ 77], | 99.00th=[ 117], 99.50th=[ 150], 99.90th=[ 188], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 183, per=24.78%, avg=67.16, stdev=37.84, samples=183 iops : min= 1, max= 45, avg=16.25, stdev= 9.54, samples=183 lat (msec) : 10=9.93%, 20=34.57%, 50=39.52%, 100=14.42%, 250=1.53% lat (msec) : 1000=0.03% cpu : usr=0.09%, sys=5.79%, ctx=5440, 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=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=259KiB/s (265kB/s), 64.1KiB/s-65.4KiB/s (65.6kB/s-66.0kB/s), io=23.4MiB (24.6MB), run=92191-92729msec WRITE: bw=271KiB/s (278kB/s), 67.4KiB/s-68.5KiB/s (68.0kB/s-70.1kB/s), io=24.6MiB (25.7MB), run=92191-92729msec 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=179404: Tue Jul 7 14:03:24 2026 read: IOPS=20, BW=330KiB/s (338kB/s)(5920KiB/17930msec) clat (usec): min=36, max=105487, avg=25123.09, stdev=15322.59 lat (usec): min=36, max=105489, avg=25124.13, stdev=15322.62 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 75], 10.00th=[ 265], 20.00th=[ 14222], | 30.00th=[ 17433], 40.00th=[ 20579], 50.00th=[ 23987], 60.00th=[ 27657], | 70.00th=[ 31065], 80.00th=[ 34866], 90.00th=[ 41681], 95.00th=[ 51119], | 99.00th=[ 76022], 99.50th=[ 93848], 99.90th=[105382], 99.95th=[105382], | 99.99th=[105382] bw ( KiB/s): min= 223, max= 479, per=25.59%, avg=329.63, stdev=76.72, samples=35 iops : min= 13, max= 29, avg=20.00, stdev= 4.74, samples=35 write: IOPS=22, BW=355KiB/s (364kB/s)(6368KiB/17930msec); 0 zone resets clat (usec): min=1513, max=96636, avg=21445.50, stdev=17586.15 lat (usec): min=1515, max=96638, avg=21448.21, stdev=17585.46 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2900], 10.00th=[ 3949], 20.00th=[ 5669], | 30.00th=[ 9372], 40.00th=[13435], 50.00th=[16450], 60.00th=[20317], | 70.00th=[27657], 80.00th=[36439], 90.00th=[47449], 95.00th=[55837], | 99.00th=[81265], 99.50th=[85459], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 190, max= 606, per=26.39%, avg=357.54, stdev=94.13, samples=35 iops : min= 11, max= 37, avg=21.74, stdev= 5.86, samples=35 lat (usec) : 50=0.39%, 100=2.86%, 250=1.43%, 500=0.39% lat (msec) : 2=0.91%, 4=4.69%, 10=11.20%, 20=26.95%, 50=44.40% lat (msec) : 100=6.64%, 250=0.13% cpu : usr=0.14%, sys=15.63%, ctx=2150, 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=179405: Tue Jul 7 14:03:24 2026 read: IOPS=19, BW=314KiB/s (321kB/s)(5744KiB/18320msec) clat (usec): min=42, max=80959, avg=26285.86, stdev=15466.41 lat (usec): min=43, max=80960, avg=26288.40, stdev=15466.94 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 109], 10.00th=[10683], 20.00th=[15401], | 30.00th=[18220], 40.00th=[20841], 50.00th=[25035], 60.00th=[27919], | 70.00th=[31327], 80.00th=[37487], 90.00th=[46400], 95.00th=[52167], | 99.00th=[73925], 99.50th=[80217], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 160, max= 574, per=24.32%, avg=313.31, stdev=98.37, samples=36 iops : min= 10, max= 35, avg=18.97, stdev= 6.10, samples=36 write: IOPS=22, BW=357KiB/s (366kB/s)(6544KiB/18320msec); 0 zone resets clat (usec): min=1540, max=117513, avg=21491.38, stdev=18102.27 lat (usec): min=1541, max=117515, avg=21493.53, stdev=18102.44 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 2900], 10.00th=[ 3654], 20.00th=[ 5669], | 30.00th=[ 8586], 40.00th=[ 13042], 50.00th=[ 17433], 60.00th=[ 22414], | 70.00th=[ 25822], 80.00th=[ 34866], 90.00th=[ 46400], 95.00th=[ 58983], | 99.00th=[ 77071], 99.50th=[ 96994], 99.90th=[117965], 99.95th=[117965], | 99.99th=[117965] bw ( KiB/s): min= 222, max= 605, per=26.46%, avg=358.50, stdev=82.69, samples=36 iops : min= 13, max= 37, avg=21.81, stdev= 5.14, samples=36 lat (usec) : 50=0.26%, 100=1.56%, 250=2.21%, 500=0.13% lat (msec) : 2=0.65%, 4=5.21%, 10=12.63%, 20=23.96%, 50=46.48% lat (msec) : 100=6.64%, 250=0.26% cpu : usr=0.09%, sys=15.67%, ctx=2196, 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=179406: Tue Jul 7 14:03:24 2026 read: IOPS=21, BW=337KiB/s (345kB/s)(6256KiB/18589msec) clat (usec): min=40, max=130425, avg=26688.07, stdev=16358.38 lat (usec): min=40, max=130425, avg=26689.21, stdev=16358.39 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 121], 10.00th=[ 11863], 20.00th=[ 15795], | 30.00th=[ 18220], 40.00th=[ 21103], 50.00th=[ 23462], 60.00th=[ 27395], | 70.00th=[ 31327], 80.00th=[ 36963], 90.00th=[ 45351], 95.00th=[ 57410], | 99.00th=[ 81265], 99.50th=[ 93848], 99.90th=[130548], 99.95th=[130548], | 99.99th=[130548] bw ( KiB/s): min= 159, max= 509, per=26.16%, avg=337.00, stdev=89.16, samples=36 iops : min= 9, max= 31, avg=20.44, stdev= 5.49, samples=36 write: IOPS=20, BW=324KiB/s (332kB/s)(6032KiB/18589msec); 0 zone resets clat (usec): min=1535, max=82144, avg=21330.00, stdev=16915.54 lat (usec): min=1536, max=82146, avg=21332.40, stdev=16915.30 clat percentiles (usec): | 1.00th=[ 1958], 5.00th=[ 2835], 10.00th=[ 3982], 20.00th=[ 5473], | 30.00th=[ 8029], 40.00th=[12518], 50.00th=[17695], 60.00th=[22676], | 70.00th=[27919], 80.00th=[35914], 90.00th=[45351], 95.00th=[52167], | 99.00th=[74974], 99.50th=[81265], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 128, max= 512, per=23.56%, avg=319.19, stdev=96.84, samples=36 iops : min= 8, max= 32, avg=19.33, stdev= 6.08, samples=36 lat (usec) : 50=0.13%, 100=1.30%, 250=2.08%, 1000=0.13% lat (msec) : 2=0.91%, 4=4.30%, 10=12.11%, 20=24.09%, 50=47.40% lat (msec) : 100=7.42%, 250=0.13% cpu : usr=0.10%, sys=15.35%, ctx=2311, 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=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=179407: Tue Jul 7 14:03:24 2026 read: IOPS=21, BW=341KiB/s (349kB/s)(6032KiB/17682msec) clat (usec): min=50, max=97640, avg=25165.11, stdev=15443.43 lat (usec): min=51, max=97642, avg=25166.44, stdev=15443.40 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 106], 10.00th=[ 8848], 20.00th=[14484], | 30.00th=[16712], 40.00th=[19792], 50.00th=[23462], 60.00th=[27132], | 70.00th=[31327], 80.00th=[35914], 90.00th=[42730], 95.00th=[50594], | 99.00th=[87557], 99.50th=[92799], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 159, max= 506, per=26.48%, avg=341.03, stdev=83.13, samples=35 iops : min= 9, max= 31, avg=20.71, stdev= 5.20, samples=35 write: IOPS=22, BW=354KiB/s (362kB/s)(6256KiB/17682msec); 0 zone resets clat (usec): min=2034, max=80060, avg=20814.53, stdev=16649.37 lat (usec): min=2036, max=80062, avg=20867.32, stdev=16735.54 clat percentiles (usec): | 1.00th=[ 2278], 5.00th=[ 2966], 10.00th=[ 4080], 20.00th=[ 5932], | 30.00th=[ 7963], 40.00th=[12518], 50.00th=[15795], 60.00th=[21103], | 70.00th=[26346], 80.00th=[35390], 90.00th=[45351], 95.00th=[55313], | 99.00th=[65274], 99.50th=[73925], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 190, max= 632, per=26.16%, avg=354.46, stdev=106.02, samples=35 iops : min= 11, max= 39, avg=21.54, stdev= 6.59, samples=35 lat (usec) : 100=1.56%, 250=2.86%, 750=0.13% lat (msec) : 2=0.13%, 4=4.69%, 10=13.28%, 20=27.34%, 50=43.36% lat (msec) : 100=6.64% cpu : usr=0.11%, sys=15.93%, ctx=2228, 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=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=1289KiB/s (1319kB/s), 314KiB/s-341KiB/s (321kB/s-349kB/s), io=23.4MiB (24.5MB), run=17682-18589msec WRITE: bw=1356KiB/s (1388kB/s), 324KiB/s-357KiB/s (332kB/s-366kB/s), io=24.6MiB (25.8MB), run=17682-18589msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179408: Tue Jul 7 14:03:30 2026 read: IOPS=15, BW=250KiB/s (256kB/s)(5920KiB/23679msec) clat (msec): min=5, max=117, avg=25.41, stdev=18.99 lat (msec): min=5, max=117, avg=25.41, stdev=18.99 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 36], 90.00th=[ 53], 95.00th=[ 69], | 99.00th=[ 96], 99.50th=[ 106], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 64, max= 640, per=25.16%, avg=250.32, stdev=139.78, samples=47 iops : min= 4, max= 40, avg=14.87, stdev= 8.81, samples=47 write: IOPS=16, BW=269KiB/s (275kB/s)(6368KiB/23679msec); 0 zone resets clat (msec): min=10, max=123, avg=35.34, stdev=20.95 lat (msec): min=10, max=123, avg=35.35, stdev=20.95 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 29], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 51], 90.00th=[ 67], 95.00th=[ 78], | 99.00th=[ 114], 99.50th=[ 123], 99.90th=[ 124], 99.95th=[ 124], | 99.99th=[ 124] bw ( KiB/s): min= 63, max= 576, per=25.67%, avg=268.77, stdev=122.19, samples=47 iops : min= 3, max= 36, avg=16.02, stdev= 7.78, samples=47 lat (msec) : 10=5.21%, 20=33.98%, 50=44.79%, 100=15.10%, 250=0.91% cpu : usr=0.09%, sys=6.54%, ctx=1406, 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= 0: pid=179409: Tue Jul 7 14:03:30 2026 read: IOPS=15, BW=240KiB/s (246kB/s)(5744KiB/23922msec) clat (msec): min=5, max=104, avg=25.70, stdev=19.29 lat (msec): min=5, max=104, avg=25.70, stdev=19.29 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 25], 80.00th=[ 37], 90.00th=[ 58], 95.00th=[ 72], | 99.00th=[ 89], 99.50th=[ 100], 99.90th=[ 105], 99.95th=[ 105], | 99.99th=[ 105] bw ( KiB/s): min= 56, max= 670, per=23.96%, avg=238.40, stdev=128.68, samples=47 iops : min= 3, max= 41, avg=14.13, stdev= 8.10, samples=47 write: IOPS=17, BW=274KiB/s (280kB/s)(6544KiB/23922msec); 0 zone resets clat (msec): min=9, max=131, avg=35.44, stdev=21.74 lat (msec): min=9, max=131, avg=35.44, stdev=21.74 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 50], 90.00th=[ 65], 95.00th=[ 82], | 99.00th=[ 116], 99.50th=[ 127], 99.90th=[ 132], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 63, max= 704, per=25.96%, avg=271.85, stdev=133.86, samples=47 iops : min= 3, max= 44, avg=16.23, stdev= 8.50, samples=47 lat (msec) : 10=4.95%, 20=33.20%, 50=45.44%, 100=15.10%, 250=1.30% cpu : usr=0.09%, sys=6.37%, ctx=1381, 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=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=179410: Tue Jul 7 14:03:30 2026 read: IOPS=16, BW=265KiB/s (272kB/s)(6256KiB/23570msec) clat (msec): min=6, max=107, avg=25.44, stdev=19.08 lat (msec): min=6, max=107, avg=25.44, stdev=19.08 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 58], 95.00th=[ 68], | 99.00th=[ 87], 99.50th=[ 100], 99.90th=[ 108], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 63, max= 766, per=26.60%, avg=264.63, stdev=155.39, samples=46 iops : min= 3, max= 47, avg=15.76, stdev= 9.78, samples=46 write: IOPS=15, BW=256KiB/s (262kB/s)(6032KiB/23570msec); 0 zone resets clat (msec): min=9, max=152, avg=35.68, stdev=21.03 lat (msec): min=9, max=152, avg=35.68, stdev=21.03 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 42], 80.00th=[ 50], 90.00th=[ 64], 95.00th=[ 78], | 99.00th=[ 112], 99.50th=[ 123], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 95, max= 574, per=24.09%, avg=252.17, stdev=122.97, samples=46 iops : min= 5, max= 35, avg=14.98, stdev= 7.78, samples=46 lat (msec) : 10=6.64%, 20=32.81%, 50=44.01%, 100=15.63%, 250=0.91% cpu : usr=0.09%, sys=6.50%, ctx=1426, 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=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=179411: Tue Jul 7 14:03:30 2026 read: IOPS=15, BW=251KiB/s (257kB/s)(6032KiB/24064msec) clat (msec): min=5, max=119, avg=25.87, stdev=20.88 lat (msec): min=5, max=119, avg=25.87, stdev=20.89 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 40], 90.00th=[ 59], 95.00th=[ 73], | 99.00th=[ 92], 99.50th=[ 107], 99.90th=[ 120], 99.95th=[ 120], | 99.99th=[ 120] bw ( KiB/s): min= 95, max= 672, per=24.76%, avg=246.34, stdev=135.11, samples=47 iops : min= 5, max= 42, avg=14.62, stdev= 8.56, samples=47 write: IOPS=16, BW=260KiB/s (266kB/s)(6256KiB/24064msec); 0 zone resets clat (msec): min=11, max=121, avg=36.30, stdev=21.61 lat (msec): min=11, max=121, avg=36.30, stdev=21.61 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 42], 80.00th=[ 52], 90.00th=[ 70], 95.00th=[ 83], | 99.00th=[ 111], 99.50th=[ 115], 99.90th=[ 122], 99.95th=[ 122], | 99.99th=[ 122] bw ( KiB/s): min= 63, max= 606, per=24.61%, avg=257.70, stdev=137.26, samples=47 iops : min= 3, max= 37, avg=15.34, stdev= 8.70, samples=47 lat (msec) : 10=7.42%, 20=32.81%, 50=42.32%, 100=16.02%, 250=1.43% cpu : usr=0.08%, sys=6.45%, 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=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=995KiB/s (1019kB/s), 240KiB/s-265KiB/s (246kB/s-272kB/s), io=23.4MiB (24.5MB), run=23570-24064msec WRITE: bw=1047KiB/s (1072kB/s), 256KiB/s-274KiB/s (262kB/s-280kB/s), io=24.6MiB (25.8MB), run=23570-24064msec 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=179421: Tue Jul 7 14:03:40 2026 read: IOPS=2, BW=3013KiB/s (3085kB/s)(7168KiB/2379msec) clat (msec): min=39, max=223, avg=144.41, stdev=61.36 lat (msec): min=39, max=223, avg=144.41, stdev=61.36 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 40], 10.00th=[ 40], 20.00th=[ 102], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 153], 60.00th=[ 180], | 70.00th=[ 180], 80.00th=[ 188], 90.00th=[ 224], 95.00th=[ 224], | 99.00th=[ 224], 99.50th=[ 224], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 2043, max= 4219, per=61.89%, avg=3368.00, stdev=1162.86, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2152KiB/s (2204kB/s)(5120KiB/2379msec); 0 zone resets clat (msec): min=164, max=419, avg=246.98, stdev=104.92 lat (msec): min=164, max=419, avg=247.07, stdev=104.92 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 199], 60.00th=[ 199], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 2035, max= 3842, per=34.65%, avg=2640.00, stdev=1040.97, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 50=8.33%, 250=75.00%, 500=16.67% cpu : usr=0.04%, sys=36.54%, ctx=285, 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=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=179422: Tue Jul 7 14:03:40 2026 read: IOPS=0, BW=544KiB/s (557kB/s)(2048KiB/3763msec) clat (msec): min=192, max=302, avg=247.34, stdev=77.56 lat (msec): min=192, max=302, avg=247.34, stdev=77.56 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 192], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 1899, max= 2043, per=36.22%, avg=1971.00, stdev=101.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2721KiB/s (2787kB/s)(10.0MiB/3763msec); 0 zone resets clat (msec): min=144, max=776, avg=307.68, stdev=192.10 lat (msec): min=144, max=776, avg=307.85, stdev=192.06 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 169], | 30.00th=[ 188], 40.00th=[ 205], 50.00th=[ 224], 60.00th=[ 266], | 70.00th=[ 268], 80.00th=[ 368], 90.00th=[ 472], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 2035, max= 5840, per=47.43%, avg=3613.60, stdev=1607.92, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 250=50.00%, 500=41.67%, 1000=8.33% cpu : usr=0.11%, sys=31.63%, ctx=329, 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=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=179423: Tue Jul 7 14:03:40 2026 read: IOPS=1, BW=1719KiB/s (1760kB/s)(6144KiB/3574msec) clat (usec): min=581, max=641474, avg=188686.76, stdev=228308.82 lat (usec): min=583, max=641476, avg=188688.04, stdev=228308.96 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[ 93848], | 30.00th=[ 93848], 40.00th=[104334], 50.00th=[104334], 60.00th=[130548], | 70.00th=[160433], 80.00th=[160433], 90.00th=[641729], 95.00th=[641729], | 99.00th=[641729], 99.50th=[641729], 99.90th=[641729], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 2043, max= 4063, per=62.14%, avg=3381.67, stdev=1159.38, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1719KiB/s (1760kB/s)(6144KiB/3574msec); 0 zone resets clat (msec): min=156, max=1189, avg=389.82, stdev=399.32 lat (msec): min=156, max=1189, avg=390.04, stdev=399.27 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 220], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 1957, max= 4087, per=31.87%, avg=2428.20, stdev=927.91, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=58.33%, 500=8.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=25.41%, ctx=333, 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=179424: Tue Jul 7 14:03:40 2026 read: IOPS=2, BW=2385KiB/s (2442kB/s)(5120KiB/2147msec) clat (usec): min=508, max=198301, avg=126923.59, stdev=79999.04 lat (usec): min=510, max=198301, avg=126924.71, stdev=79998.78 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[116917], 40.00th=[116917], 50.00th=[126354], 60.00th=[126354], | 70.00th=[193987], 80.00th=[193987], 90.00th=[198181], 95.00th=[198181], | 99.00th=[198181], 99.50th=[198181], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 2035, max= 5840, per=72.35%, avg=3937.50, stdev=2690.54, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=3, BW=3339KiB/s (3419kB/s)(7168KiB/2147msec); 0 zone resets clat (msec): min=145, max=334, avg=210.92, stdev=68.25 lat (msec): min=145, max=335, avg=211.08, stdev=68.27 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 153], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 211], 60.00th=[ 241], | 70.00th=[ 241], 80.00th=[ 241], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 3828, max= 6059, per=61.07%, avg=4652.67, stdev=1223.97, samples=3 iops : min= 3, max= 5, avg= 3.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=83.33%, 500=8.33% cpu : usr=0.05%, sys=40.49%, ctx=207, 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=5442KiB/s (5573kB/s), 544KiB/s-3013KiB/s (557kB/s-3085kB/s), io=20.0MiB (20.0MB), run=2147-3763msec WRITE: bw=7619KiB/s (7802kB/s), 1719KiB/s-3339KiB/s (1760kB/s-3419kB/s), io=28.0MiB (29.4MB), run=2147-3763msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179425: Tue Jul 7 14:03:40 2026 read: IOPS=2, BW=2208KiB/s (2261kB/s)(7168KiB/3246msec) clat (msec): min=63, max=821, avg=253.81, stdev=273.91 lat (msec): min=63, max=821, avg=253.81, stdev=273.91 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 67], | 30.00th=[ 70], 40.00th=[ 70], 50.00th=[ 161], 60.00th=[ 226], | 70.00th=[ 226], 80.00th=[ 368], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1961, max= 4096, per=45.37%, avg=2429.40, stdev=932.25, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 write: IOPS=1, BW=1577KiB/s (1615kB/s)(5120KiB/3246msec); 0 zone resets clat (msec): min=127, max=365, avg=266.89, stdev=94.67 lat (msec): min=127, max=366, avg=267.38, stdev=94.71 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 128], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 1961, max= 4071, per=35.93%, avg=2693.33, stdev=1193.89, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=25.00%, 250=33.33%, 500=33.33%, 1000=8.33% cpu : usr=0.03%, sys=13.22%, ctx=143, 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=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=179426: Tue Jul 7 14:03:40 2026 read: IOPS=0, BW=536KiB/s (549kB/s)(2048KiB/3822msec) clat (msec): min=67, max=360, avg=213.84, stdev=207.44 lat (msec): min=67, max=360, avg=213.84, stdev=207.44 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 68], | 30.00th=[ 68], 40.00th=[ 68], 50.00th=[ 68], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 2019, max= 2035, per=37.85%, avg=2027.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2679KiB/s (2744kB/s)(10.0MiB/3822msec); 0 zone resets clat (msec): min=148, max=657, avg=324.38, stdev=176.70 lat (msec): min=148, max=657, avg=324.49, stdev=176.68 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 171], | 30.00th=[ 236], 40.00th=[ 251], 50.00th=[ 259], 60.00th=[ 266], | 70.00th=[ 300], 80.00th=[ 321], 90.00th=[ 634], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 4063, max= 4096, per=54.44%, avg=4081.50, stdev=17.06, samples=4 iops : min= 3, max= 4, avg= 3.50, stdev= 0.58, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=13.84%, ctx=112, 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=179427: Tue Jul 7 14:03:40 2026 read: IOPS=1, BW=1607KiB/s (1645kB/s)(6144KiB/3824msec) clat (msec): min=37, max=508, avg=242.65, stdev=184.86 lat (msec): min=37, max=508, avg=242.65, stdev=184.86 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 39], 10.00th=[ 39], 20.00th=[ 65], | 30.00th=[ 65], 40.00th=[ 178], 50.00th=[ 178], 60.00th=[ 279], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 1961, max= 2048, per=37.70%, avg=2018.75, stdev=39.18, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 write: IOPS=1, BW=1607KiB/s (1645kB/s)(6144KiB/3824msec); 0 zone resets clat (msec): min=116, max=1190, avg=387.96, stdev=400.98 lat (msec): min=117, max=1190, avg=388.07, stdev=400.98 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 253], 50.00th=[ 253], 60.00th=[ 309], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 2035, max= 3871, per=35.37%, avg=2651.33, stdev=1056.28, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 50=8.33%, 100=8.33%, 250=25.00%, 500=41.67%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.05%, sys=9.70%, ctx=100, 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=179428: Tue Jul 7 14:03:40 2026 read: IOPS=1, BW=1359KiB/s (1391kB/s)(5120KiB/3768msec) clat (msec): min=48, max=218, avg=138.64, stdev=60.67 lat (msec): min=48, max=218, avg=138.64, stdev=60.67 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 49], 10.00th=[ 49], 20.00th=[ 49], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 142], 60.00th=[ 142], | 70.00th=[ 155], 80.00th=[ 155], 90.00th=[ 218], 95.00th=[ 218], | 99.00th=[ 218], 99.50th=[ 218], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 1961, max= 6107, per=75.33%, avg=4034.00, stdev=2931.66, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1902KiB/s (1948kB/s)(7168KiB/3768msec); 0 zone resets clat (msec): min=80, max=1153, avg=429.72, stdev=346.22 lat (msec): min=80, max=1153, avg=429.83, stdev=346.21 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 262], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 338], 60.00th=[ 368], | 70.00th=[ 368], 80.00th=[ 531], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 1961, max= 2048, per=26.94%, avg=2019.80, stdev=36.23, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=33.33%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=9.98%, ctx=147, 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=5356KiB/s (5484kB/s), 536KiB/s-2208KiB/s (549kB/s-2261kB/s), io=20.0MiB (20.0MB), run=3246-3824msec WRITE: bw=7498KiB/s (7678kB/s), 1577KiB/s-2679KiB/s (1615kB/s-2744kB/s), io=28.0MiB (29.4MB), run=3246-3824msec 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=179439: Tue Jul 7 14:03:49 2026 read: IOPS=1, BW=6397KiB/s (6550kB/s)(12.0MiB/1921msec) clat (msec): min=314, max=958, avg=620.96, stdev=323.28 lat (msec): min=314, max=958, avg=620.96, stdev=323.28 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=7.24%, ctx=54, 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=179440: Tue Jul 7 14:03:49 2026 read: IOPS=0, BW=1918KiB/s (1964kB/s)(4096KiB/2136msec) clat (nsec): min=866921k, max=866921k, avg=866920666.00, stdev= 0.00 lat (nsec): min=866923k, max=866923k, avg=866923236.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3835KiB/s (3927kB/s)(8192KiB/2136msec); 0 zone resets clat (msec): min=382, max=855, avg=619.02, stdev=334.47 lat (msec): min=382, max=855, avg=619.49, stdev=334.48 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 8192, max= 8192, per=59.60%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.09%, sys=6.98%, ctx=44, 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=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=179441: Tue Jul 7 14:03:49 2026 write: IOPS=1, BW=5154KiB/s (5278kB/s)(12.0MiB/2384msec); 0 zone resets clat (msec): min=136, max=1448, avg=785.79, stdev=656.02 lat (msec): min=136, max=1449, avg=786.29, stdev=656.20 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 8192, max= 8192, per=59.60%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.26%, ctx=48, 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=179442: Tue Jul 7 14:03:49 2026 write: IOPS=1, BW=5756KiB/s (5894kB/s)(12.0MiB/2135msec); 0 zone resets clat (msec): min=163, max=1202, avg=682.34, stdev=519.69 lat (msec): min=163, max=1202, avg=682.77, stdev=519.72 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8175, max= 8175, per=59.48%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=11.01%, 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=7670KiB/s (7855kB/s), 1918KiB/s-6397KiB/s (1964kB/s-6550kB/s), io=16.0MiB (16.8MB), run=1921-2136msec WRITE: bw=13.4MiB/s (14.1MB/s), 3835KiB/s-5756KiB/s (3927kB/s-5894kB/s), io=32.0MiB (33.6MB), run=2135-2384msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179435: Tue Jul 7 14:03:50 2026 read: IOPS=1, BW=6461KiB/s (6616kB/s)(12.0MiB/1902msec) clat (msec): min=536, max=737, avg=614.22, stdev=108.04 lat (msec): min=536, max=737, avg=614.22, stdev=108.04 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 535], | 30.00th=[ 535], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 8192, max= 8192, per=95.10%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=35.72%, ctx=768, 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=179436: Tue Jul 7 14:03:50 2026 read: IOPS=0, BW=2729KiB/s (2794kB/s)(4096KiB/1501msec) clat (nsec): min=487607k, max=487607k, avg=487606774.00, stdev= 0.00 lat (nsec): min=487609k, max=487609k, avg=487608639.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 489], 50.00th=[ 489], 60.00th=[ 489], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 5859, max= 5859, per=68.02%, avg=5859.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5458KiB/s (5589kB/s)(8192KiB/1501msec); 0 zone resets clat (msec): min=467, max=498, avg=482.98, stdev=21.79 lat (msec): min=468, max=498, avg=483.49, stdev=21.62 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 8192, max= 8192, per=62.58%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=23.20%, ctx=372, 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=179437: Tue Jul 7 14:03:50 2026 write: IOPS=1, BW=4909KiB/s (5027kB/s)(12.0MiB/2503msec); 0 zone resets clat (msec): min=117, max=1611, avg=818.95, stdev=751.43 lat (msec): min=117, max=1613, avg=819.83, stdev=751.85 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 8192, max= 8192, per=62.58%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.04%, sys=8.23%, ctx=69, 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=179438: Tue Jul 7 14:03:50 2026 write: IOPS=1, BW=6434KiB/s (6588kB/s)(12.0MiB/1910msec); 0 zone resets clat (msec): min=326, max=845, avg=609.45, stdev=263.05 lat (msec): min=327, max=846, avg=610.18, stdev=262.57 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 844], 80.00th=[ 844], 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= 5535, max= 8192, per=52.43%, avg=6863.50, stdev=1878.78, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.05%, sys=13.25%, ctx=70, 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=8614KiB/s (8821kB/s), 2729KiB/s-6461KiB/s (2794kB/s-6616kB/s), io=16.0MiB (16.8MB), run=1501-1902msec WRITE: bw=12.8MiB/s (13.4MB/s), 4909KiB/s-6434KiB/s (5027kB/s-6588kB/s), io=32.0MiB (33.6MB), run=1501-2503msec