== sanity test 398b: DIO and buffer IO race ============== 21:33:07 (1787103187) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.78355 s, 18.1 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=180632: Tue Aug 18 21:34:17 2026 read: IOPS=24, BW=98.3KiB/s (101kB/s)(5992KiB/60985msec) clat (usec): min=40, max=838545, avg=22086.79, stdev=24001.10 lat (usec): min=42, max=838547, avg=22087.51, stdev=24001.13 clat percentiles (usec): | 1.00th=[ 130], 5.00th=[ 8455], 10.00th=[ 10290], 20.00th=[ 12518], | 30.00th=[ 14746], 40.00th=[ 17171], 50.00th=[ 19268], 60.00th=[ 21627], | 70.00th=[ 25035], 80.00th=[ 29492], 90.00th=[ 36439], 95.00th=[ 43779], | 99.00th=[ 58459], 99.50th=[ 61080], 99.90th=[102237], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 13, max= 208, per=24.89%, avg=97.80, stdev=35.32, samples=121 iops : min= 3, max= 52, avg=24.05, stdev= 8.91, samples=121 write: IOPS=25, BW=103KiB/s (106kB/s)(6296KiB/60985msec); 0 zone resets clat (usec): min=710, max=82097, avg=17566.83, stdev=12658.88 lat (usec): min=710, max=82097, avg=17567.93, stdev=12658.70 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2966], 10.00th=[ 3523], 20.00th=[ 6128], | 30.00th=[ 9372], 40.00th=[12125], 50.00th=[14746], 60.00th=[17957], | 70.00th=[22152], 80.00th=[27132], 90.00th=[34866], 95.00th=[41157], | 99.00th=[57934], 99.50th=[65274], 99.90th=[80217], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 8, max= 224, per=25.26%, avg=103.83, stdev=37.77, samples=120 iops : min= 2, max= 56, avg=25.56, stdev= 9.49, samples=120 lat (usec) : 50=0.03%, 100=0.23%, 250=0.62%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=0.49%, 4=5.92%, 10=13.18%, 20=38.70%, 50=38.05% lat (msec) : 100=2.34%, 250=0.03%, 1000=0.03% cpu : usr=0.11%, sys=26.36%, ctx=10333, 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=180633: Tue Aug 18 21:34:17 2026 read: IOPS=24, BW=97.2KiB/s (99.6kB/s)(5940KiB/61091msec) clat (usec): min=55, max=101917, avg=22021.49, stdev=11281.98 lat (usec): min=56, max=101917, avg=22022.29, stdev=11282.01 clat percentiles (usec): | 1.00th=[ 165], 5.00th=[ 8455], 10.00th=[ 10159], 20.00th=[ 12780], | 30.00th=[ 15008], 40.00th=[ 17433], 50.00th=[ 20055], 60.00th=[ 22676], | 70.00th=[ 26084], 80.00th=[ 30278], 90.00th=[ 36439], 95.00th=[ 42730], | 99.00th=[ 55313], 99.50th=[ 63177], 99.90th=[ 90702], 99.95th=[102237], | 99.99th=[102237] bw ( KiB/s): min= 6, max= 184, per=24.81%, avg=97.49, stdev=32.86, samples=120 iops : min= 1, max= 46, avg=23.97, stdev= 8.31, samples=120 write: IOPS=25, BW=104KiB/s (106kB/s)(6348KiB/61091msec); 0 zone resets clat (usec): min=790, max=813562, avg=17715.27, stdev=23549.50 lat (usec): min=790, max=813563, avg=17716.07, stdev=23549.52 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 3032], 10.00th=[ 3687], 20.00th=[ 5866], | 30.00th=[ 8291], 40.00th=[ 11863], 50.00th=[ 14353], 60.00th=[ 17957], | 70.00th=[ 21890], 80.00th=[ 26870], 90.00th=[ 34866], 95.00th=[ 41157], | 99.00th=[ 54264], 99.50th=[ 60556], 99.90th=[ 91751], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 6, max= 232, per=25.06%, avg=103.02, stdev=38.31, samples=121 iops : min= 1, max= 58, avg=25.36, stdev= 9.61, samples=121 lat (usec) : 100=0.20%, 250=0.49%, 500=0.03%, 1000=0.16% lat (msec) : 2=0.39%, 4=5.70%, 10=15.82%, 20=34.99%, 50=40.36% lat (msec) : 100=1.79%, 250=0.03%, 1000=0.03% cpu : usr=0.12%, sys=26.72%, ctx=10338, 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=180634: Tue Aug 18 21:34:17 2026 read: IOPS=24, BW=99.6KiB/s (102kB/s)(6028KiB/60505msec) clat (usec): min=42, max=816955, avg=21745.97, stdev=23314.63 lat (usec): min=43, max=816955, avg=21746.83, stdev=23314.64 clat percentiles (usec): | 1.00th=[ 118], 5.00th=[ 7767], 10.00th=[ 9634], 20.00th=[ 12125], | 30.00th=[ 14091], 40.00th=[ 16581], 50.00th=[ 19268], 60.00th=[ 22152], | 70.00th=[ 25297], 80.00th=[ 29492], 90.00th=[ 35914], 95.00th=[ 41157], | 99.00th=[ 53216], 99.50th=[ 66323], 99.90th=[ 87557], 99.95th=[817890], | 99.99th=[817890] bw ( KiB/s): min= 24, max= 192, per=25.49%, avg=100.19, stdev=34.95, samples=119 iops : min= 6, max= 48, avg=24.65, stdev= 8.79, samples=119 write: IOPS=25, BW=103KiB/s (106kB/s)(6260KiB/60505msec); 0 zone resets clat (usec): min=954, max=103010, avg=17543.98, stdev=12870.10 lat (usec): min=954, max=103011, avg=17544.98, stdev=12870.14 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2900], 10.00th=[ 3490], 20.00th=[ 5866], | 30.00th=[ 8717], 40.00th=[ 11863], 50.00th=[ 14877], 60.00th=[ 18220], | 70.00th=[ 22414], 80.00th=[ 27395], 90.00th=[ 35390], 95.00th=[ 42206], | 99.00th=[ 55837], 99.50th=[ 62653], 99.90th=[ 78119], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 8, max= 200, per=25.04%, avg=102.92, stdev=38.28, samples=120 iops : min= 2, max= 50, avg=25.33, stdev= 9.63, samples=120 lat (usec) : 50=0.03%, 100=0.26%, 250=0.59%, 500=0.16%, 1000=0.10% lat (msec) : 2=0.59%, 4=5.63%, 10=15.76%, 20=35.74%, 50=39.29% lat (msec) : 100=1.79%, 250=0.03%, 1000=0.03% cpu : usr=0.11%, sys=26.64%, ctx=10513, 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=180635: Tue Aug 18 21:34:17 2026 read: IOPS=24, BW=99.1KiB/s (102kB/s)(6052KiB/61041msec) clat (usec): min=42, max=812240, avg=21958.27, stdev=23423.55 lat (usec): min=43, max=812241, avg=21959.05, stdev=23423.57 clat percentiles (usec): | 1.00th=[ 109], 5.00th=[ 7963], 10.00th=[ 9372], 20.00th=[ 11731], | 30.00th=[ 14222], 40.00th=[ 16909], 50.00th=[ 19268], 60.00th=[ 22152], | 70.00th=[ 25297], 80.00th=[ 29754], 90.00th=[ 36439], 95.00th=[ 44303], | 99.00th=[ 56886], 99.50th=[ 64750], 99.90th=[ 80217], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 23, max= 192, per=25.29%, avg=99.38, stdev=33.68, samples=120 iops : min= 5, max= 48, avg=24.44, stdev= 8.49, samples=120 write: IOPS=25, BW=102KiB/s (105kB/s)(6236KiB/61041msec); 0 zone resets clat (usec): min=918, max=90580, avg=17667.80, stdev=12656.32 lat (usec): min=920, max=90581, avg=17668.76, stdev=12656.36 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2933], 10.00th=[ 3458], 20.00th=[ 5932], | 30.00th=[ 9110], 40.00th=[11994], 50.00th=[15270], 60.00th=[19006], | 70.00th=[22938], 80.00th=[27919], 90.00th=[34866], 95.00th=[41157], | 99.00th=[57410], 99.50th=[63701], 99.90th=[72877], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 24, max= 200, per=24.72%, avg=101.59, stdev=37.73, samples=121 iops : min= 6, max= 50, avg=25.00, stdev= 9.47, samples=121 lat (usec) : 50=0.07%, 100=0.33%, 250=0.65%, 500=0.07%, 1000=0.07% lat (msec) : 2=0.59%, 4=5.96%, 10=15.30%, 20=35.06%, 50=39.58% lat (msec) : 100=2.31%, 1000=0.03% cpu : usr=0.11%, sys=26.33%, ctx=10284, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=393KiB/s (402kB/s), 97.2KiB/s-99.6KiB/s (99.6kB/s-102kB/s), io=23.4MiB (24.6MB), run=60505-61091msec WRITE: bw=412KiB/s (421kB/s), 102KiB/s-104KiB/s (105kB/s-106kB/s), io=24.6MiB (25.7MB), run=60505-61091msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180627: Tue Aug 18 21:34:24 2026 read: IOPS=22, BW=88.8KiB/s (90.9kB/s)(5992KiB/67466msec) clat (msec): min=3, max=861, avg=19.82, stdev=26.43 lat (msec): min=3, max=861, avg=19.82, stdev=26.43 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 29], 90.00th=[ 41], 95.00th=[ 50], | 99.00th=[ 71], 99.50th=[ 88], 99.90th=[ 104], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 8, max= 344, per=25.19%, avg=89.42, stdev=62.47, samples=132 iops : min= 2, max= 86, avg=21.97, stdev=15.74, samples=132 write: IOPS=23, BW=93.3KiB/s (95.6kB/s)(6296KiB/67466msec); 0 zone resets clat (msec): min=4, max=114, avg=23.80, stdev=16.58 lat (msec): min=4, max=114, avg=23.80, stdev=16.58 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 45], 95.00th=[ 57], | 99.00th=[ 81], 99.50th=[ 88], 99.90th=[ 111], 99.95th=[ 115], | 99.99th=[ 115] bw ( KiB/s): min= 24, max= 360, per=25.23%, avg=93.85, stdev=64.96, samples=132 iops : min= 6, max= 90, avg=23.08, stdev=16.32, samples=132 lat (msec) : 4=0.91%, 10=28.22%, 20=27.34%, 50=37.40%, 100=5.92% lat (msec) : 250=0.16%, 1000=0.03% cpu : usr=0.09%, sys=14.90%, ctx=6871, 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=180628: Tue Aug 18 21:34:24 2026 read: IOPS=22, BW=88.1KiB/s (90.2kB/s)(5940KiB/67407msec) clat (msec): min=3, max=823, avg=19.96, stdev=25.90 lat (msec): min=3, max=823, avg=19.96, stdev=25.90 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 31], 90.00th=[ 42], 95.00th=[ 51], | 99.00th=[ 72], 99.50th=[ 80], 99.90th=[ 124], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 368, per=24.91%, avg=88.44, stdev=63.61, samples=133 iops : min= 1, max= 92, avg=21.72, stdev=16.00, samples=133 write: IOPS=23, BW=94.2KiB/s (96.4kB/s)(6348KiB/67407msec); 0 zone resets clat (msec): min=4, max=118, avg=23.60, stdev=15.90 lat (msec): min=4, max=118, avg=23.60, stdev=15.91 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 75], 99.50th=[ 84], 99.90th=[ 115], 99.95th=[ 120], | 99.99th=[ 120] bw ( KiB/s): min= 31, max= 352, per=25.53%, avg=94.98, stdev=64.27, samples=132 iops : min= 7, max= 88, avg=23.36, stdev=16.14, samples=132 lat (msec) : 4=0.72%, 10=28.35%, 20=28.06%, 50=36.72%, 100=5.99% lat (msec) : 250=0.13%, 1000=0.03% cpu : usr=0.09%, sys=15.10%, ctx=6948, 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=180629: Tue Aug 18 21:34:24 2026 read: IOPS=22, BW=89.7KiB/s (91.9kB/s)(6028KiB/67203msec) clat (msec): min=2, max=121, avg=19.29, stdev=15.21 lat (msec): min=2, max=121, avg=19.29, stdev=15.21 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 41], 95.00th=[ 50], | 99.00th=[ 68], 99.50th=[ 77], 99.90th=[ 120], 99.95th=[ 122], | 99.99th=[ 122] bw ( KiB/s): min= 23, max= 376, per=25.35%, avg=89.98, stdev=65.03, samples=131 iops : min= 5, max= 94, avg=22.11, stdev=16.36, samples=131 write: IOPS=23, BW=93.2KiB/s (95.4kB/s)(6260KiB/67203msec); 0 zone resets clat (msec): min=4, max=825, avg=24.17, stdev=25.69 lat (msec): min=4, max=825, avg=24.17, stdev=25.69 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 54], | 99.00th=[ 74], 99.50th=[ 84], 99.90th=[ 106], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 31, max= 319, per=25.08%, avg=93.28, stdev=61.73, samples=131 iops : min= 7, max= 79, avg=22.93, stdev=15.51, samples=131 lat (msec) : 4=0.65%, 10=27.86%, 20=28.35%, 50=37.27%, 100=5.70% lat (msec) : 250=0.13%, 1000=0.03% cpu : usr=0.10%, sys=14.94%, ctx=6895, 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=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=180630: Tue Aug 18 21:34:24 2026 read: IOPS=22, BW=90.1KiB/s (92.3kB/s)(6052KiB/67176msec) clat (msec): min=2, max=120, avg=19.35, stdev=14.96 lat (msec): min=2, max=120, avg=19.35, stdev=14.97 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 41], 95.00th=[ 50], | 99.00th=[ 73], 99.50th=[ 79], 99.90th=[ 104], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 7, max= 328, per=25.40%, avg=90.17, stdev=60.33, samples=131 iops : min= 1, max= 82, avg=22.15, stdev=15.18, samples=131 write: IOPS=23, BW=92.8KiB/s (95.1kB/s)(6236KiB/67176msec); 0 zone resets clat (msec): min=4, max=838, avg=24.11, stdev=25.83 lat (msec): min=5, max=838, avg=24.11, stdev=25.83 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 26], | 70.00th=[ 30], 80.00th=[ 35], 90.00th=[ 45], 95.00th=[ 55], | 99.00th=[ 72], 99.50th=[ 85], 99.90th=[ 110], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 31, max= 328, per=25.07%, avg=93.27, stdev=63.05, samples=131 iops : min= 7, max= 82, avg=22.93, stdev=15.84, samples=131 lat (msec) : 4=0.78%, 10=26.43%, 20=29.95%, 50=37.40%, 100=5.31% lat (msec) : 250=0.10%, 1000=0.03% cpu : usr=0.09%, sys=15.09%, ctx=6987, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=356KiB/s (364kB/s), 88.1KiB/s-90.1KiB/s (90.2kB/s-92.3kB/s), io=23.4MiB (24.6MB), run=67176-67466msec WRITE: bw=373KiB/s (382kB/s), 92.8KiB/s-94.2KiB/s (95.1kB/s-96.4kB/s), io=24.6MiB (25.7MB), run=67176-67466msec 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=180660: Tue Aug 18 21:34:45 2026 read: IOPS=22, BW=364KiB/s (372kB/s)(5920KiB/16284msec) clat (usec): min=77, max=88870, avg=21415.15, stdev=12354.15 lat (usec): min=77, max=88871, avg=21416.03, stdev=12354.24 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 188], 10.00th=[ 9372], 20.00th=[12387], | 30.00th=[14877], 40.00th=[16909], 50.00th=[19792], 60.00th=[21890], | 70.00th=[25297], 80.00th=[28967], 90.00th=[36439], 95.00th=[43779], | 99.00th=[63701], 99.50th=[76022], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 190, max= 640, per=24.57%, avg=361.22, stdev=123.81, samples=32 iops : min= 11, max= 40, avg=21.97, stdev= 7.86, samples=32 write: IOPS=24, BW=391KiB/s (400kB/s)(6368KiB/16284msec); 0 zone resets clat (usec): min=2071, max=76486, avg=20876.70, stdev=13660.50 lat (usec): min=2073, max=76488, avg=20878.39, stdev=13660.61 clat percentiles (usec): | 1.00th=[ 2835], 5.00th=[ 4490], 10.00th=[ 5604], 20.00th=[ 8979], | 30.00th=[11600], 40.00th=[14353], 50.00th=[17433], 60.00th=[22152], | 70.00th=[26608], 80.00th=[32900], 90.00th=[39584], 95.00th=[48497], | 99.00th=[63177], 99.50th=[65799], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 127, max= 608, per=25.25%, avg=390.56, stdev=123.29, samples=32 iops : min= 7, max= 38, avg=23.81, stdev= 7.81, samples=32 lat (usec) : 100=0.91%, 250=1.82% lat (msec) : 2=0.13%, 4=1.43%, 10=13.80%, 20=35.68%, 50=42.71% lat (msec) : 100=3.52% cpu : usr=0.15%, sys=28.13%, ctx=3202, 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=180661: Tue Aug 18 21:34:45 2026 read: IOPS=22, BW=365KiB/s (374kB/s)(5744KiB/15729msec) clat (usec): min=62, max=70947, avg=22413.04, stdev=11982.36 lat (usec): min=63, max=70949, avg=22432.64, stdev=11977.46 clat percentiles (usec): | 1.00th=[ 82], 5.00th=[ 7504], 10.00th=[10945], 20.00th=[13173], | 30.00th=[15533], 40.00th=[18220], 50.00th=[20579], 60.00th=[23200], | 70.00th=[26084], 80.00th=[29492], 90.00th=[37487], 95.00th=[46924], | 99.00th=[60556], 99.50th=[68682], 99.90th=[70779], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 126, max= 542, per=24.88%, avg=365.71, stdev=96.31, samples=31 iops : min= 7, max= 33, avg=22.23, stdev= 6.04, samples=31 write: IOPS=26, BW=416KiB/s (426kB/s)(6544KiB/15729msec); 0 zone resets clat (usec): min=1964, max=72327, avg=18699.47, stdev=12687.73 lat (usec): min=1965, max=72329, avg=18701.13, stdev=12687.85 clat percentiles (usec): | 1.00th=[ 3032], 5.00th=[ 4490], 10.00th=[ 5014], 20.00th=[ 7570], | 30.00th=[10028], 40.00th=[13042], 50.00th=[15926], 60.00th=[19006], | 70.00th=[22676], 80.00th=[28443], 90.00th=[35914], 95.00th=[43779], | 99.00th=[58459], 99.50th=[59507], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 157, max= 701, per=26.83%, avg=415.10, stdev=146.80, samples=31 iops : min= 9, max= 43, avg=25.32, stdev= 9.38, samples=31 lat (usec) : 100=0.52%, 250=1.30%, 500=0.13% lat (msec) : 2=0.13%, 4=1.30%, 10=15.36%, 20=37.76%, 50=40.36% lat (msec) : 100=3.12% cpu : usr=0.09%, sys=29.40%, ctx=2943, 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=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=180662: Tue Aug 18 21:34:45 2026 read: IOPS=24, BW=387KiB/s (397kB/s)(6256KiB/16145msec) clat (usec): min=81, max=65491, avg=21700.22, stdev=11678.97 lat (usec): min=82, max=65492, avg=21701.20, stdev=11679.02 clat percentiles (usec): | 1.00th=[ 99], 5.00th=[ 245], 10.00th=[10421], 20.00th=[12387], | 30.00th=[15139], 40.00th=[17695], 50.00th=[20055], 60.00th=[21890], | 70.00th=[25297], 80.00th=[30016], 90.00th=[37487], 95.00th=[43779], | 99.00th=[55313], 99.50th=[57410], 99.90th=[65274], 99.95th=[65274], | 99.99th=[65274] bw ( KiB/s): min= 159, max= 605, per=26.35%, avg=387.39, stdev=122.68, samples=31 iops : min= 9, max= 37, avg=23.58, stdev= 7.77, samples=31 write: IOPS=23, BW=374KiB/s (383kB/s)(6032KiB/16145msec); 0 zone resets clat (usec): min=1327, max=98832, avg=20153.04, stdev=13304.98 lat (usec): min=1328, max=98834, avg=20154.74, stdev=13305.05 clat percentiles (usec): | 1.00th=[ 1958], 5.00th=[ 4424], 10.00th=[ 5473], 20.00th=[ 8455], | 30.00th=[11600], 40.00th=[13698], 50.00th=[17433], 60.00th=[21365], | 70.00th=[25560], 80.00th=[30278], 90.00th=[38536], 95.00th=[46400], | 99.00th=[55313], 99.50th=[67634], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 188, max= 544, per=23.48%, avg=363.29, stdev=116.31, samples=31 iops : min= 11, max= 34, avg=22.06, stdev= 7.36, samples=31 lat (usec) : 100=0.52%, 250=2.08%, 500=0.26% lat (msec) : 2=0.52%, 4=1.17%, 10=12.11%, 20=37.24%, 50=43.49% lat (msec) : 100=2.60% cpu : usr=0.09%, sys=28.42%, ctx=3075, 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=180663: Tue Aug 18 21:34:45 2026 read: IOPS=23, BW=381KiB/s (390kB/s)(6032KiB/15818msec) clat (usec): min=30, max=69916, avg=22269.67, stdev=12135.76 lat (usec): min=30, max=69918, avg=22270.60, stdev=12135.88 clat percentiles (usec): | 1.00th=[ 89], 5.00th=[ 176], 10.00th=[10028], 20.00th=[13304], | 30.00th=[15926], 40.00th=[17695], 50.00th=[20317], 60.00th=[23462], | 70.00th=[26346], 80.00th=[30802], 90.00th=[36963], 95.00th=[43254], | 99.00th=[60556], 99.50th=[68682], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 63, max= 638, per=25.66%, avg=377.26, stdev=140.34, samples=31 iops : min= 3, max= 39, avg=22.97, stdev= 8.90, samples=31 write: IOPS=24, BW=395KiB/s (405kB/s)(6256KiB/15818msec); 0 zone resets clat (usec): min=1216, max=59139, avg=18807.77, stdev=13023.57 lat (usec): min=1218, max=59140, avg=18809.46, stdev=13023.80 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 4359], 10.00th=[ 5014], 20.00th=[ 7373], | 30.00th=[ 9765], 40.00th=[12649], 50.00th=[16057], 60.00th=[19268], | 70.00th=[22676], 80.00th=[28443], 90.00th=[37487], 95.00th=[46924], | 99.00th=[54789], 99.50th=[57934], 99.90th=[58983], 99.95th=[58983], | 99.99th=[58983] bw ( KiB/s): min= 191, max= 512, per=25.23%, avg=390.29, stdev=91.79, samples=31 iops : min= 11, max= 32, avg=23.77, stdev= 5.84, samples=31 lat (usec) : 50=0.13%, 100=0.65%, 250=1.82%, 500=0.26% lat (msec) : 2=0.65%, 4=1.30%, 10=15.76%, 20=34.64%, 50=41.28% lat (msec) : 100=3.52% cpu : usr=0.13%, sys=28.76%, ctx=3085, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1471KiB/s (1506kB/s), 364KiB/s-387KiB/s (372kB/s-397kB/s), io=23.4MiB (24.5MB), run=15729-16284msec WRITE: bw=1548KiB/s (1585kB/s), 374KiB/s-416KiB/s (383kB/s-426kB/s), io=24.6MiB (25.8MB), run=15729-16284msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180665: Tue Aug 18 21:34:47 2026 read: IOPS=20, BW=336KiB/s (344kB/s)(5920KiB/17628msec) clat (msec): min=3, max=139, avg=19.96, stdev=16.39 lat (msec): min=3, max=139, avg=19.96, stdev=16.39 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 29], 90.00th=[ 41], 95.00th=[ 52], | 99.00th=[ 84], 99.50th=[ 87], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 95, max= 1056, per=23.19%, avg=312.59, stdev=180.17, samples=34 iops : min= 5, max= 66, avg=18.97, stdev=11.45, samples=34 write: IOPS=22, BW=361KiB/s (370kB/s)(6368KiB/17628msec); 0 zone resets clat (msec): min=5, max=112, avg=25.46, stdev=18.06 lat (msec): min=5, max=112, avg=25.47, stdev=18.05 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 37], 90.00th=[ 51], 95.00th=[ 65], | 99.00th=[ 87], 99.50th=[ 96], 99.90th=[ 112], 99.95th=[ 112], | 99.99th=[ 112] bw ( KiB/s): min= 158, max= 1088, per=24.13%, avg=342.21, stdev=193.93, samples=34 iops : min= 9, max= 68, avg=20.82, stdev=12.24, samples=34 lat (msec) : 4=0.26%, 10=22.66%, 20=34.64%, 50=34.51%, 100=7.68% lat (msec) : 250=0.26% cpu : usr=0.07%, sys=14.62%, ctx=1841, 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=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=180666: Tue Aug 18 21:34:47 2026 read: IOPS=20, BW=324KiB/s (332kB/s)(5744KiB/17710msec) clat (usec): min=3692, max=81973, avg=20116.82, stdev=15205.16 lat (usec): min=3693, max=81974, avg=20117.54, stdev=15205.23 clat percentiles (usec): | 1.00th=[ 3752], 5.00th=[ 5604], 10.00th=[ 6194], 20.00th=[ 7898], | 30.00th=[10421], 40.00th=[12649], 50.00th=[15008], 60.00th=[18744], | 70.00th=[23462], 80.00th=[28967], 90.00th=[40633], 95.00th=[52691], | 99.00th=[73925], 99.50th=[74974], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 63, max= 928, per=24.01%, avg=323.63, stdev=197.98, samples=35 iops : min= 3, max= 58, avg=19.69, stdev=12.56, samples=35 write: IOPS=23, BW=370KiB/s (378kB/s)(6544KiB/17710msec); 0 zone resets clat (msec): min=5, max=111, avg=25.27, stdev=17.77 lat (msec): min=5, max=111, avg=25.27, stdev=17.77 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 39], 90.00th=[ 49], 95.00th=[ 57], | 99.00th=[ 89], 99.50th=[ 100], 99.90th=[ 112], 99.95th=[ 112], | 99.99th=[ 112] bw ( KiB/s): min= 158, max= 1280, per=26.04%, avg=369.20, stdev=254.23, samples=35 iops : min= 9, max= 80, avg=22.54, stdev=16.05, samples=35 lat (msec) : 4=0.65%, 10=24.09%, 20=31.38%, 50=36.98%, 100=6.64% lat (msec) : 250=0.26% cpu : usr=0.11%, sys=14.41%, ctx=1864, 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=180667: Tue Aug 18 21:34:47 2026 read: IOPS=22, BW=352KiB/s (361kB/s)(6256KiB/17760msec) clat (msec): min=3, max=131, avg=21.12, stdev=17.23 lat (msec): min=3, max=131, avg=21.12, stdev=17.23 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 25], 80.00th=[ 34], 90.00th=[ 45], 95.00th=[ 54], | 99.00th=[ 84], 99.50th=[ 96], 99.90th=[ 132], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 126, max= 1280, per=26.13%, avg=352.29, stdev=252.43, samples=35 iops : min= 7, max= 80, avg=21.49, stdev=15.93, samples=35 write: IOPS=21, BW=340KiB/s (348kB/s)(6032KiB/17760msec); 0 zone resets clat (usec): min=4669, max=99568, avg=24898.47, stdev=16430.37 lat (usec): min=4670, max=99570, avg=24900.17, stdev=16430.54 clat percentiles (usec): | 1.00th=[ 6194], 5.00th=[ 7242], 10.00th=[ 7963], 20.00th=[10159], | 30.00th=[12911], 40.00th=[15926], 50.00th=[20841], 60.00th=[26608], | 70.00th=[31327], 80.00th=[37487], 90.00th=[48497], 95.00th=[55837], | 99.00th=[80217], 99.50th=[86508], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 95, max= 960, per=23.48%, avg=332.91, stdev=202.47, samples=35 iops : min= 5, max= 60, avg=20.26, stdev=12.85, samples=35 lat (msec) : 4=0.52%, 10=23.31%, 20=31.51%, 50=37.76%, 100=6.77% lat (msec) : 250=0.13% cpu : usr=0.10%, sys=14.48%, ctx=1803, 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=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=180668: Tue Aug 18 21:34:47 2026 read: IOPS=21, BW=340KiB/s (348kB/s)(6032KiB/17764msec) clat (usec): min=2686, max=90196, avg=20782.46, stdev=16567.99 lat (usec): min=2687, max=90197, avg=20783.23, stdev=16568.03 clat percentiles (usec): | 1.00th=[ 3458], 5.00th=[ 5211], 10.00th=[ 6063], 20.00th=[ 7701], | 30.00th=[10159], 40.00th=[12518], 50.00th=[15139], 60.00th=[18744], | 70.00th=[23725], 80.00th=[31327], 90.00th=[45876], 95.00th=[60556], | 99.00th=[78119], 99.50th=[80217], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 95, max= 1152, per=24.85%, avg=334.97, stdev=228.25, samples=35 iops : min= 5, max= 72, avg=20.40, stdev=14.45, samples=35 write: IOPS=22, BW=352KiB/s (361kB/s)(6256KiB/17764msec); 0 zone resets clat (usec): min=5591, max=99665, avg=24984.99, stdev=16188.35 lat (usec): min=5593, max=99666, avg=24986.58, stdev=16188.48 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 36], 90.00th=[ 47], 95.00th=[ 57], | 99.00th=[ 83], 99.50th=[ 94], 99.90th=[ 101], 99.95th=[ 101], | 99.99th=[ 101] bw ( KiB/s): min= 158, max= 1120, per=24.68%, avg=350.00, stdev=206.06, samples=35 iops : min= 9, max= 70, avg=21.34, stdev=13.05, samples=35 lat (msec) : 4=0.91%, 10=21.88%, 20=32.55%, 50=37.24%, 100=7.42% cpu : usr=0.12%, sys=14.45%, ctx=1846, 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=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=1348KiB/s (1381kB/s), 324KiB/s-352KiB/s (332kB/s-361kB/s), io=23.4MiB (24.5MB), run=17628-17764msec WRITE: bw=1419KiB/s (1453kB/s), 340KiB/s-370KiB/s (348kB/s-378kB/s), io=24.6MiB (25.8MB), run=17628-17764msec 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=180675: Tue Aug 18 21:34:55 2026 read: IOPS=3, BW=3326KiB/s (3406kB/s)(7168KiB/2155msec) clat (usec): min=556, max=238074, avg=133485.00, stdev=77418.64 lat (usec): min=558, max=238076, avg=133486.47, stdev=77418.60 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 98042], | 30.00th=[107480], 40.00th=[107480], 50.00th=[123208], 60.00th=[168821], | 70.00th=[168821], 80.00th=[198181], 90.00th=[238027], 95.00th=[238027], | 99.00th=[238027], 99.50th=[238027], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 2048, max= 5120, per=56.01%, avg=3754.67, stdev=1564.19, samples=3 iops : min= 2, max= 5, avg= 3.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2376KiB/s (2433kB/s)(5120KiB/2155msec); 0 zone resets clat (msec): min=155, max=336, avg=236.32, stdev=80.72 lat (msec): min=155, max=336, avg=236.38, stdev=80.72 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 199], 60.00th=[ 199], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 2048, max= 4039, per=28.89%, avg=2711.67, stdev=1149.50, samples=3 iops : min= 2, max= 3, avg= 2.33, stdev= 0.58, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=66.67%, 500=16.67% cpu : usr=0.00%, sys=49.77%, ctx=1034, 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=180676: Tue Aug 18 21:34:55 2026 read: IOPS=0, BW=670KiB/s (686kB/s)(2048KiB/3055msec) clat (usec): min=613, max=106610, avg=53611.86, stdev=74951.59 lat (usec): min=614, max=106613, avg=53614.09, stdev=74953.16 clat percentiles (usec): | 1.00th=[ 611], 5.00th=[ 611], 10.00th=[ 611], 20.00th=[ 611], | 30.00th=[ 611], 40.00th=[ 611], 50.00th=[ 611], 60.00th=[106431], | 70.00th=[106431], 80.00th=[106431], 90.00th=[106431], 95.00th=[106431], | 99.00th=[106431], 99.50th=[106431], 99.90th=[106431], 99.95th=[106431], | 99.99th=[106431] bw ( KiB/s): min= 1706, max= 2048, per=28.00%, avg=1877.00, stdev=241.83, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3352KiB/s (3432kB/s)(10.0MiB/3055msec); 0 zone resets clat (msec): min=81, max=500, avg=293.70, stdev=172.59 lat (msec): min=81, max=500, avg=293.77, stdev=172.58 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 120], | 30.00th=[ 127], 40.00th=[ 133], 50.00th=[ 234], 60.00th=[ 347], | 70.00th=[ 439], 80.00th=[ 468], 90.00th=[ 489], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 2019, max= 4096, per=38.11%, avg=3576.75, stdev=1038.50, samples=4 iops : min= 1, max= 4, avg= 3.25, stdev= 1.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33% cpu : usr=0.03%, sys=41.94%, ctx=306, 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=180677: Tue Aug 18 21:34:55 2026 read: IOPS=2, BW=2567KiB/s (2629kB/s)(6144KiB/2393msec) clat (msec): min=22, max=272, avg=162.03, stdev=86.87 lat (msec): min=22, max=272, avg=162.03, stdev=86.87 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 23], 10.00th=[ 23], 20.00th=[ 125], | 30.00th=[ 125], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 207], | 70.00th=[ 209], 80.00th=[ 209], 90.00th=[ 271], 95.00th=[ 271], | 99.00th=[ 271], 99.50th=[ 271], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 2048, max= 4096, per=50.64%, avg=3394.33, stdev=1166.31, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=2, BW=2567KiB/s (2629kB/s)(6144KiB/2393msec); 0 zone resets clat (msec): min=139, max=292, avg=228.83, stdev=56.70 lat (msec): min=139, max=292, avg=228.89, stdev=56.70 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 262], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 2019, max= 3390, per=25.32%, avg=2376.25, stdev=675.97, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 50=8.33%, 250=58.33%, 500=33.33% cpu : usr=0.04%, sys=47.45%, ctx=222, 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=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=180679: Tue Aug 18 21:34:55 2026 read: IOPS=2, BW=2179KiB/s (2231kB/s)(5120KiB/2350msec) clat (usec): min=374, max=266054, avg=157697.01, stdev=96947.08 lat (usec): min=376, max=266055, avg=157698.27, stdev=96946.98 clat percentiles (usec): | 1.00th=[ 375], 5.00th=[ 375], 10.00th=[ 375], 20.00th=[ 375], | 30.00th=[160433], 40.00th=[160433], 50.00th=[175113], 60.00th=[175113], | 70.00th=[185598], 80.00th=[185598], 90.00th=[265290], 95.00th=[265290], | 99.00th=[265290], 99.50th=[265290], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 4039, max= 4096, per=60.68%, avg=4067.50, stdev=40.31, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=2, BW=3050KiB/s (3123kB/s)(7168KiB/2350msec); 0 zone resets clat (msec): min=108, max=334, avg=215.38, stdev=86.67 lat (msec): min=108, max=334, avg=215.44, stdev=86.68 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 150], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 194], 60.00th=[ 255], | 70.00th=[ 255], 80.00th=[ 313], 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= 1703, max= 4096, per=31.74%, avg=2978.50, stdev=1296.81, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.73, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=58.33%, 500=33.33% cpu : usr=0.00%, sys=50.49%, ctx=261, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6704KiB/s (6865kB/s), 670KiB/s-3326KiB/s (686kB/s-3406kB/s), io=20.0MiB (20.0MB), run=2155-3055msec WRITE: bw=9385KiB/s (9611kB/s), 2376KiB/s-3352KiB/s (2433kB/s-3432kB/s), io=28.0MiB (29.4MB), run=2155-3055msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180680: Tue Aug 18 21:34:56 2026 read: IOPS=2, BW=2799KiB/s (2866kB/s)(7168KiB/2561msec) clat (msec): min=63, max=447, avg=178.63, stdev=126.26 lat (msec): min=63, max=447, avg=178.64, stdev=126.26 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 95], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 159], 60.00th=[ 176], | 70.00th=[ 176], 80.00th=[ 182], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 1946, max= 5171, per=46.35%, avg=3055.00, stdev=1833.22, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=1, BW=1999KiB/s (2047kB/s)(5120KiB/2561msec); 0 zone resets clat (msec): min=62, max=646, avg=250.46, stdev=229.97 lat (msec): min=63, max=646, avg=250.53, stdev=229.97 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 64], | 30.00th=[ 126], 40.00th=[ 126], 50.00th=[ 203], 60.00th=[ 203], | 70.00th=[ 215], 80.00th=[ 215], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1946, max= 4096, per=32.74%, avg=3021.00, stdev=1520.28, samples=2 iops : min= 1, max= 4, avg= 2.50, stdev= 2.12, samples=2 lat (msec) : 100=25.00%, 250=58.33%, 500=8.33%, 750=8.33% cpu : usr=0.00%, sys=22.19%, ctx=132, 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=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=180681: Tue Aug 18 21:34:56 2026 read: IOPS=0, BW=659KiB/s (675kB/s)(2048KiB/3107msec) clat (usec): min=80003, max=91088, avg=85545.96, stdev=7838.81 lat (usec): min=80005, max=91089, avg=85547.86, stdev=7837.76 clat percentiles (usec): | 1.00th=[80217], 5.00th=[80217], 10.00th=[80217], 20.00th=[80217], | 30.00th=[80217], 40.00th=[80217], 50.00th=[80217], 60.00th=[90702], | 70.00th=[90702], 80.00th=[90702], 90.00th=[90702], 95.00th=[90702], | 99.00th=[90702], 99.50th=[90702], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 1735, max= 2048, per=28.70%, avg=1891.50, stdev=221.32, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3296KiB/s (3375kB/s)(10.0MiB/3107msec); 0 zone resets clat (msec): min=49, max=851, avg=287.36, stdev=257.88 lat (msec): min=49, max=851, avg=287.43, stdev=257.88 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 71], | 30.00th=[ 91], 40.00th=[ 100], 50.00th=[ 190], 60.00th=[ 241], | 70.00th=[ 342], 80.00th=[ 368], 90.00th=[ 575], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 2048, max= 4096, per=36.26%, avg=3345.67, stdev=1128.39, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 lat (msec) : 50=8.33%, 100=41.67%, 250=16.67%, 500=16.67%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.03%, sys=22.99%, ctx=260, 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=180682: Tue Aug 18 21:34:56 2026 read: IOPS=2, BW=2139KiB/s (2191kB/s)(6144KiB/2872msec) clat (msec): min=53, max=184, avg=107.24, stdev=58.35 lat (msec): min=53, max=184, avg=107.24, stdev=58.35 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 57], | 30.00th=[ 57], 40.00th=[ 65], 50.00th=[ 65], 60.00th=[ 117], | 70.00th=[ 167], 80.00th=[ 167], 90.00th=[ 186], 95.00th=[ 186], | 99.00th=[ 186], 99.50th=[ 186], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 1946, max= 4096, per=40.91%, avg=2696.67, stdev=1212.93, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 write: IOPS=2, BW=2139KiB/s (2191kB/s)(6144KiB/2872msec); 0 zone resets clat (msec): min=134, max=725, avg=363.21, stdev=208.62 lat (msec): min=135, max=725, avg=363.28, stdev=208.62 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 363], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 2048, max= 4096, per=36.26%, avg=3345.67, stdev=1128.39, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 lat (msec) : 100=25.00%, 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=16.86%, ctx=163, 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=180683: Tue Aug 18 21:34:56 2026 read: IOPS=1, BW=1729KiB/s (1770kB/s)(5120KiB/2962msec) clat (msec): min=48, max=482, avg=200.76, stdev=166.53 lat (msec): min=48, max=482, avg=200.76, stdev=166.53 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 48], 10.00th=[ 48], 20.00th=[ 48], | 30.00th=[ 120], 40.00th=[ 120], 50.00th=[ 165], 60.00th=[ 165], | 70.00th=[ 190], 80.00th=[ 190], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 4096, max= 4096, per=62.15%, avg=4096.00, stdev= 0.00, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2420KiB/s (2478kB/s)(7168KiB/2962msec); 0 zone resets clat (msec): min=121, max=748, avg=276.50, stdev=215.75 lat (msec): min=121, max=748, avg=276.57, stdev=215.75 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 146], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 224], 60.00th=[ 249], | 70.00th=[ 249], 80.00th=[ 279], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 3893, max= 4096, per=43.29%, avg=3994.50, stdev=143.54, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 lat (msec) : 50=8.33%, 250=66.67%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=15.67%, ctx=198, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6592KiB/s (6750kB/s), 659KiB/s-2799KiB/s (675kB/s-2866kB/s), io=20.0MiB (20.0MB), run=2561-3107msec WRITE: bw=9228KiB/s (9450kB/s), 1999KiB/s-3296KiB/s (2047kB/s-3375kB/s), io=28.0MiB (29.4MB), run=2561-3107msec 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=180693: Tue Aug 18 21:35:05 2026 read: IOPS=1, BW=5705KiB/s (5842kB/s)(12.0MiB/2154msec) clat (msec): min=615, max=720, avg=682.09, stdev=58.08 lat (msec): min=615, max=720, avg=682.09, stdev=58.08 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7831, max= 8192, per=100.00%, avg=8011.50, stdev=255.27, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=54.71%, ctx=2717, 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=180694: Tue Aug 18 21:35:05 2026 read: IOPS=0, BW=1547KiB/s (1585kB/s)(4096KiB/2647msec) clat (nsec): min=796983k, max=796983k, avg=796982662.00, stdev= 0.00 lat (nsec): min=796985k, max=796985k, avg=796985032.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7831, max= 7831, per=100.00%, avg=7831.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3095KiB/s (3169kB/s)(8192KiB/2647msec); 0 zone resets clat (msec): min=898, max=917, avg=908.13, stdev=13.19 lat (msec): min=898, max=917, avg=908.36, stdev=13.24 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=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 8126, max= 8126, per=68.94%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=21.43%, ctx=903, 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=180695: Tue Aug 18 21:35:05 2026 write: IOPS=1, BW=4420KiB/s (4526kB/s)(12.0MiB/2780msec); 0 zone resets clat (msec): min=328, max=1433, avg=880.38, stdev=552.24 lat (msec): min=329, max=1433, avg=880.70, stdev=552.26 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 1435], 80.00th=[ 1435], 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= 8126, max= 8192, per=69.22%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=16.66%, ctx=106, 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=180696: Tue Aug 18 21:35:05 2026 write: IOPS=1, BW=5026KiB/s (5146kB/s)(12.0MiB/2445msec); 0 zone resets clat (msec): min=257, max=1305, avg=779.04, stdev=524.02 lat (msec): min=257, max=1305, avg=779.35, stdev=524.03 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7831, max= 7831, per=66.44%, avg=7831.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=18.45%, ctx=280, 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=6190KiB/s (6338kB/s), 1547KiB/s-5705KiB/s (1585kB/s-5842kB/s), io=16.0MiB (16.8MB), run=2154-2647msec WRITE: bw=11.5MiB/s (12.1MB/s), 3095KiB/s-5026KiB/s (3169kB/s-5146kB/s), io=32.0MiB (33.6MB), run=2445-2780msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180688: Tue Aug 18 21:35:05 2026 read: IOPS=1, BW=5196KiB/s (5320kB/s)(12.0MiB/2365msec) clat (msec): min=631, max=988, avg=772.54, stdev=190.01 lat (msec): min=631, max=988, avg=772.54, stdev=190.01 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 8110, max= 8192, per=100.00%, avg=8151.00, stdev=57.98, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=16.96%, ctx=95, majf=0, minf=8 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=180689: Tue Aug 18 21:35:05 2026 read: IOPS=1, BW=4108KiB/s (4207kB/s)(4096KiB/997msec) clat (nsec): min=141968k, max=141968k, avg=141967953.00, stdev= 0.00 lat (nsec): min=141971k, max=141971k, avg=141970638.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 142], | 70.00th=[ 142], 80.00th=[ 142], 90.00th=[ 142], 95.00th=[ 142], | 99.00th=[ 142], 99.50th=[ 142], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 7585, max= 7585, per=100.00%, avg=7585.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=2, BW=8217KiB/s (8414kB/s)(8192KiB/997msec); 0 zone resets clat (msec): min=251, max=567, avg=409.53, stdev=223.79 lat (msec): min=251, max=568, avg=409.87, stdev=223.81 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 251], 50.00th=[ 251], 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] lat (msec) : 250=33.33%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=34.84%, ctx=130, 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=180690: Tue Aug 18 21:35:05 2026 write: IOPS=0, BW=4081KiB/s (4179kB/s)(12.0MiB/3011msec); 0 zone resets clat (msec): min=75, max=2048, avg=983.42, stdev=995.96 lat (msec): min=76, max=2049, avg=983.73, stdev=995.94 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 77], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 2056], 80.00th=[ 2056], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 8192, max= 8192, per=75.28%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=12.39%, ctx=51, 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=180691: Tue Aug 18 21:35:05 2026 write: IOPS=1, BW=6390KiB/s (6543kB/s)(12.0MiB/1923msec); 0 zone resets clat (msec): min=223, max=1417, avg=621.96, stdev=689.34 lat (msec): min=224, max=1418, avg=622.19, stdev=689.38 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 224], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min=15086, max=15086, per=100.00%, avg=15086.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=17.74%, ctx=55, 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=6928KiB/s (7094kB/s), 4108KiB/s-5196KiB/s (4207kB/s-5320kB/s), io=16.0MiB (16.8MB), run=997-2365msec WRITE: bw=10.6MiB/s (11.1MB/s), 4081KiB/s-8217KiB/s (4179kB/s-8414kB/s), io=32.0MiB (33.6MB), run=997-3011msec