== sanity test 398b: DIO and buffer IO race ============== 16:23:02 (1786825382) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.8919 s, 8.5 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179291: Sat Aug 15 16:25:04 2026 read: IOPS=14, BW=56.6KiB/s (57.0kB/s)(5992KiB/105832msec) clat (usec): min=36, max=188712, avg=39312.94, stdev=26076.01 lat (usec): min=36, max=188713, avg=39316.25, stdev=26075.73 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 10552], 10.00th=[ 15139], 20.00th=[ 19792], | 30.00th=[ 24511], 40.00th=[ 29230], 50.00th=[ 33817], 60.00th=[ 38536], | 70.00th=[ 45876], 80.00th=[ 55313], 90.00th=[ 70779], 95.00th=[ 87557], | 99.00th=[139461], 99.50th=[162530], 99.90th=[183501], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 15, max= 126, per=24.76%, avg=55.97, stdev=20.34, samples=209 iops : min= 3, max= 31, avg=13.37, stdev= 5.13, samples=209 write: IOPS=14, BW=59.5KiB/s (60.9kB/s)(6296KiB/105832msec); 0 zone resets clat (usec): min=853, max=582802, avg=29559.61, stdev=32731.72 lat (usec): min=853, max=582804, avg=29561.55, stdev=32731.50 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1336], 10.00th=[ 1713], 20.00th=[ 3687], | 30.00th=[ 7111], 40.00th=[ 14353], 50.00th=[ 21890], 60.00th=[ 28705], | 70.00th=[ 36963], 80.00th=[ 50594], 90.00th=[ 70779], 95.00th=[ 87557], | 99.00th=[128451], 99.50th=[154141], 99.90th=[246416], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 7, max= 135, per=24.80%, avg=58.77, stdev=23.39, samples=209 iops : min= 1, max= 33, avg=14.07, stdev= 5.89, samples=209 lat (usec) : 50=0.29%, 100=1.46%, 500=0.03%, 1000=0.23% lat (msec) : 2=5.83%, 4=4.92%, 10=7.65%, 20=14.10%, 50=42.97% lat (msec) : 100=19.56%, 250=2.93%, 750=0.03% cpu : usr=0.09%, sys=6.29%, ctx=6739, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179292: Sat Aug 15 16:25:04 2026 read: IOPS=14, BW=56.6KiB/s (57.0kB/s)(5940KiB/104888msec) clat (usec): min=35, max=208327, avg=38349.24, stdev=25073.68 lat (usec): min=40, max=208328, avg=38352.00, stdev=25074.12 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 10945], 10.00th=[ 15139], 20.00th=[ 19792], | 30.00th=[ 23725], 40.00th=[ 27919], 50.00th=[ 32637], 60.00th=[ 38011], | 70.00th=[ 45351], 80.00th=[ 53216], 90.00th=[ 69731], 95.00th=[ 84411], | 99.00th=[133694], 99.50th=[149947], 99.90th=[202376], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 15, max= 103, per=24.80%, avg=56.04, stdev=20.57, samples=207 iops : min= 3, max= 25, avg=13.40, stdev= 5.17, samples=207 write: IOPS=15, BW=60.5KiB/s (61.0kB/s)(6348KiB/104888msec); 0 zone resets clat (usec): min=830, max=610642, avg=29953.76, stdev=33698.48 lat (usec): min=831, max=610642, avg=29956.76, stdev=33698.00 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1336], 10.00th=[ 1680], 20.00th=[ 3392], | 30.00th=[ 6456], 40.00th=[ 14222], 50.00th=[ 21890], 60.00th=[ 29492], | 70.00th=[ 38011], 80.00th=[ 51119], 90.00th=[ 70779], 95.00th=[ 86508], | 99.00th=[137364], 99.50th=[149947], 99.90th=[320865], 99.95th=[608175], | 99.99th=[608175] bw ( KiB/s): min= 15, max= 154, per=25.18%, avg=59.67, stdev=23.46, samples=207 iops : min= 3, max= 38, avg=14.31, stdev= 5.90, samples=207 lat (usec) : 50=0.29%, 100=1.07%, 250=0.07%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=6.54%, 4=5.01%, 10=7.52%, 20=14.00%, 50=42.61% lat (msec) : 100=20.08%, 250=2.60%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=6.31%, ctx=6706, 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=179293: Sat Aug 15 16:25:04 2026 read: IOPS=14, BW=58.0KiB/s (59.4kB/s)(6028KiB/103895msec) clat (usec): min=37, max=211391, avg=37630.46, stdev=24036.81 lat (usec): min=38, max=211392, avg=37634.00, stdev=24035.51 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 10028], 10.00th=[ 15008], 20.00th=[ 20055], | 30.00th=[ 24249], 40.00th=[ 28181], 50.00th=[ 33424], 60.00th=[ 38536], | 70.00th=[ 44827], 80.00th=[ 52167], 90.00th=[ 64750], 95.00th=[ 80217], | 99.00th=[124257], 99.50th=[147850], 99.90th=[198181], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 7, max= 119, per=25.36%, avg=57.32, stdev=20.93, samples=205 iops : min= 1, max= 29, avg=13.72, stdev= 5.27, samples=205 write: IOPS=15, BW=60.3KiB/s (61.7kB/s)(6260KiB/103895msec); 0 zone resets clat (usec): min=856, max=459367, avg=29908.52, stdev=31649.41 lat (usec): min=857, max=459369, avg=29918.70, stdev=31656.22 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1385], 10.00th=[ 1860], 20.00th=[ 3949], | 30.00th=[ 7570], 40.00th=[ 14615], 50.00th=[ 22414], 60.00th=[ 29230], | 70.00th=[ 38536], 80.00th=[ 50594], 90.00th=[ 68682], 95.00th=[ 86508], | 99.00th=[137364], 99.50th=[152044], 99.90th=[225444], 99.95th=[459277], | 99.99th=[459277] bw ( KiB/s): min= 15, max= 127, per=25.08%, avg=59.45, stdev=23.08, samples=205 iops : min= 3, max= 31, avg=14.24, stdev= 5.81, samples=205 lat (usec) : 50=0.33%, 100=1.27%, 250=0.16%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.53%, 4=4.79%, 10=7.29%, 20=14.13%, 50=44.95% lat (msec) : 100=18.68%, 250=2.67%, 500=0.03% cpu : usr=0.09%, sys=6.55%, ctx=6863, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179294: Sat Aug 15 16:25:04 2026 read: IOPS=14, BW=57.3KiB/s (58.6kB/s)(6052KiB/105691msec) clat (usec): min=37, max=481426, avg=38399.77, stdev=27595.99 lat (usec): min=37, max=481428, avg=38410.03, stdev=27600.04 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 7111], 10.00th=[ 14222], 20.00th=[ 19268], | 30.00th=[ 23462], 40.00th=[ 27919], 50.00th=[ 33817], 60.00th=[ 39060], | 70.00th=[ 45876], 80.00th=[ 53740], 90.00th=[ 68682], 95.00th=[ 83362], | 99.00th=[127402], 99.50th=[156238], 99.90th=[202376], 99.95th=[480248], | 99.99th=[480248] bw ( KiB/s): min= 15, max= 111, per=25.09%, avg=56.71, stdev=20.00, samples=209 iops : min= 3, max= 27, avg=13.56, stdev= 5.05, samples=209 write: IOPS=14, BW=59.0KiB/s (60.4kB/s)(6236KiB/105691msec); 0 zone resets clat (usec): min=930, max=185467, avg=30268.53, stdev=29228.63 lat (usec): min=931, max=185467, avg=30272.21, stdev=29228.74 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1434], 10.00th=[ 2147], 20.00th=[ 4490], | 30.00th=[ 8291], 40.00th=[ 16319], 50.00th=[ 22414], 60.00th=[ 30016], | 70.00th=[ 39060], 80.00th=[ 50594], 90.00th=[ 70779], 95.00th=[ 88605], | 99.00th=[135267], 99.50th=[143655], 99.90th=[181404], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 7, max= 114, per=24.64%, avg=58.40, stdev=21.26, samples=209 iops : min= 1, max= 28, avg=13.99, stdev= 5.37, samples=209 lat (usec) : 50=0.46%, 100=1.53%, 250=0.23%, 750=0.03%, 1000=0.07% lat (msec) : 2=4.72%, 4=4.49%, 10=7.88%, 20=15.04%, 50=43.29% lat (msec) : 100=19.37%, 250=2.86%, 500=0.03% cpu : usr=0.08%, sys=6.34%, ctx=6809, 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=227KiB/s (232kB/s), 56.6KiB/s-58.0KiB/s (57.0kB/s-59.4kB/s), io=23.4MiB (24.6MB), run=103895-105832msec WRITE: bw=238KiB/s (243kB/s), 59.0KiB/s-60.5KiB/s (60.4kB/s-61.0kB/s), io=24.6MiB (25.7MB), run=103895-105832msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179296: Sat Aug 15 16:25:47 2026 read: IOPS=10, BW=40.8KiB/s (41.7kB/s)(5992KiB/146985msec) clat (msec): min=4, max=630, avg=39.48, stdev=37.65 lat (msec): min=4, max=630, avg=39.49, stdev=37.64 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 58], 90.00th=[ 84], 95.00th=[ 108], | 99.00th=[ 174], 99.50th=[ 197], 99.90th=[ 372], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 166, per=24.85%, avg=40.51, stdev=26.22, samples=287 iops : min= 1, max= 41, avg= 9.46, stdev= 6.59, samples=287 write: IOPS=10, BW=42.8KiB/s (43.9kB/s)(6296KiB/146985msec); 0 zone resets clat (msec): min=10, max=306, avg=55.71, stdev=36.49 lat (msec): min=10, max=306, avg=55.72, stdev=36.49 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 65], 80.00th=[ 79], 90.00th=[ 103], 95.00th=[ 127], | 99.00th=[ 184], 99.50th=[ 209], 99.90th=[ 264], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 7, max= 119, per=25.02%, avg=42.53, stdev=23.77, samples=288 iops : min= 1, max= 29, avg= 9.97, stdev= 5.97, samples=288 lat (msec) : 10=3.22%, 20=15.79%, 50=46.19%, 100=26.37%, 250=8.27% lat (msec) : 500=0.13%, 750=0.03% cpu : usr=0.06%, sys=2.41%, ctx=5116, 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=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=179297: Sat Aug 15 16:25:47 2026 read: IOPS=10, BW=40.4KiB/s (41.4kB/s)(5940KiB/146988msec) clat (msec): min=3, max=529, avg=39.49, stdev=35.85 lat (msec): min=3, max=529, avg=39.49, stdev=35.85 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 57], 90.00th=[ 86], 95.00th=[ 104], | 99.00th=[ 169], 99.50th=[ 188], 99.90th=[ 271], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 5, max= 151, per=24.89%, avg=40.58, stdev=25.71, samples=285 iops : min= 1, max= 37, avg= 9.48, stdev= 6.46, samples=285 write: IOPS=10, BW=43.2KiB/s (44.2kB/s)(6348KiB/146988msec); 0 zone resets clat (msec): min=8, max=297, avg=55.58, stdev=36.90 lat (msec): min=8, max=297, avg=55.59, stdev=36.90 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 55], | 70.00th=[ 65], 80.00th=[ 80], 90.00th=[ 103], 95.00th=[ 127], | 99.00th=[ 190], 99.50th=[ 218], 99.90th=[ 266], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 5, max= 127, per=25.13%, avg=42.72, stdev=23.88, samples=289 iops : min= 1, max= 31, avg=10.02, stdev= 5.99, samples=289 lat (msec) : 4=0.03%, 10=2.73%, 20=17.29%, 50=44.92%, 100=26.60% lat (msec) : 250=8.24%, 500=0.16%, 750=0.03% cpu : usr=0.06%, sys=2.37%, ctx=4990, 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=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=179298: Sat Aug 15 16:25:47 2026 read: IOPS=10, BW=40.0KiB/s (41.9kB/s)(6028KiB/147195msec) clat (msec): min=4, max=269, avg=38.85, stdev=32.86 lat (msec): min=4, max=269, avg=38.85, stdev=32.86 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 56], 90.00th=[ 81], 95.00th=[ 108], | 99.00th=[ 167], 99.50th=[ 184], 99.90th=[ 243], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 5, max= 166, per=25.14%, avg=40.98, stdev=24.85, samples=287 iops : min= 1, max= 41, avg= 9.59, stdev= 6.26, samples=287 write: IOPS=10, BW=42.5KiB/s (43.5kB/s)(6260KiB/147195msec); 0 zone resets clat (msec): min=10, max=533, avg=56.57, stdev=40.24 lat (msec): min=10, max=533, avg=56.57, stdev=40.24 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 53], | 70.00th=[ 65], 80.00th=[ 83], 90.00th=[ 107], 95.00th=[ 132], | 99.00th=[ 209], 99.50th=[ 226], 99.90th=[ 275], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 7, max= 151, per=24.67%, avg=41.94, stdev=24.65, samples=291 iops : min= 1, max= 37, avg= 9.82, stdev= 6.18, samples=291 lat (msec) : 10=3.19%, 20=16.18%, 50=47.01%, 100=24.74%, 250=8.76% lat (msec) : 500=0.10%, 750=0.03% cpu : usr=0.05%, sys=2.38%, ctx=5043, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179299: Sat Aug 15 16:25:47 2026 read: IOPS=10, BW=41.5KiB/s (42.5kB/s)(6052KiB/145830msec) clat (msec): min=5, max=387, avg=38.53, stdev=33.29 lat (msec): min=5, max=387, avg=38.53, stdev=33.29 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 79], 95.00th=[ 104], | 99.00th=[ 169], 99.50th=[ 188], 99.90th=[ 230], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 7, max= 167, per=25.71%, avg=41.91, stdev=25.66, samples=282 iops : min= 1, max= 41, avg= 9.82, stdev= 6.45, samples=282 write: IOPS=10, BW=42.8KiB/s (43.8kB/s)(6236KiB/145830msec); 0 zone resets clat (msec): min=7, max=537, avg=56.06, stdev=37.96 lat (msec): min=7, max=537, avg=56.06, stdev=37.96 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 55], | 70.00th=[ 66], 80.00th=[ 80], 90.00th=[ 105], 95.00th=[ 127], | 99.00th=[ 188], 99.50th=[ 207], 99.90th=[ 296], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7, max= 119, per=24.85%, avg=42.24, stdev=23.73, samples=288 iops : min= 1, max= 29, avg= 9.90, stdev= 5.95, samples=288 lat (msec) : 10=3.35%, 20=15.59%, 50=46.29%, 100=26.53%, 250=8.11% lat (msec) : 500=0.10%, 750=0.03% cpu : usr=0.06%, sys=2.48%, ctx=5075, 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=163KiB/s (167kB/s), 40.4KiB/s-41.5KiB/s (41.4kB/s-42.5kB/s), io=23.4MiB (24.6MB), run=145830-147195msec WRITE: bw=171KiB/s (175kB/s), 42.5KiB/s-43.2KiB/s (43.5kB/s-44.2kB/s), io=24.6MiB (25.7MB), run=145830-147195msec 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=179337: Sat Aug 15 16:26:29 2026 read: IOPS=12, BW=201KiB/s (206kB/s)(5920KiB/29470msec) clat (usec): min=41, max=174215, avg=42583.29, stdev=26078.30 lat (usec): min=42, max=174217, avg=42586.02, stdev=26077.64 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 64], 10.00th=[ 1663], 20.00th=[ 22676], | 30.00th=[ 29230], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 46400], | 70.00th=[ 53216], 80.00th=[ 62653], 90.00th=[ 73925], 95.00th=[ 85459], | 99.00th=[117965], 99.50th=[133694], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 62, max= 350, per=25.94%, avg=200.54, stdev=66.41, samples=57 iops : min= 3, max= 21, avg=11.81, stdev= 4.16, samples=57 write: IOPS=13, BW=216KiB/s (221kB/s)(6368KiB/29470msec); 0 zone resets clat (usec): min=1357, max=185991, avg=34334.64, stdev=33109.11 lat (usec): min=1358, max=185993, avg=34337.31, stdev=33108.90 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2114], 10.00th=[ 3589], 20.00th=[ 6063], | 30.00th=[ 9634], 40.00th=[ 19006], 50.00th=[ 25297], 60.00th=[ 31851], | 70.00th=[ 43779], 80.00th=[ 58459], 90.00th=[ 77071], 95.00th=[105382], | 99.00th=[141558], 99.50th=[166724], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 62, max= 445, per=26.73%, avg=217.60, stdev=80.27, samples=57 iops : min= 3, max= 27, avg=12.89, stdev= 5.04, samples=57 lat (usec) : 50=0.65%, 100=3.39%, 250=0.13%, 500=0.39%, 750=0.13% lat (msec) : 2=2.34%, 4=4.56%, 10=8.98%, 20=9.11%, 50=40.76% lat (msec) : 100=25.39%, 250=4.17% cpu : usr=0.08%, sys=6.32%, ctx=1701, 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=179339: Sat Aug 15 16:26:29 2026 read: IOPS=11, BW=191KiB/s (195kB/s)(5744KiB/30144msec) clat (usec): min=41, max=196650, avg=43099.83, stdev=28357.70 lat (usec): min=42, max=196651, avg=43130.08, stdev=28409.59 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 65], 10.00th=[ 13173], 20.00th=[ 23200], | 30.00th=[ 28181], 40.00th=[ 34341], 50.00th=[ 38536], 60.00th=[ 43254], | 70.00th=[ 51643], 80.00th=[ 61604], 90.00th=[ 76022], 95.00th=[ 92799], | 99.00th=[152044], 99.50th=[162530], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 22, max= 412, per=24.63%, avg=190.39, stdev=79.98, samples=59 iops : min= 1, max= 25, avg=11.17, stdev= 5.02, samples=59 write: IOPS=13, BW=217KiB/s (222kB/s)(6544KiB/30144msec); 0 zone resets clat (usec): min=1478, max=178686, avg=35137.74, stdev=32755.87 lat (usec): min=1480, max=178687, avg=35141.88, stdev=32756.23 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2040], 10.00th=[ 3163], 20.00th=[ 6915], | 30.00th=[ 11076], 40.00th=[ 17957], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 47973], 80.00th=[ 59507], 90.00th=[ 81265], 95.00th=[ 96994], | 99.00th=[149947], 99.50th=[158335], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 93, max= 414, per=26.69%, avg=217.25, stdev=82.32, samples=59 iops : min= 5, max= 25, avg=12.86, stdev= 5.15, samples=59 lat (usec) : 50=0.26%, 100=3.39%, 250=0.13%, 500=0.13% lat (msec) : 2=2.34%, 4=4.30%, 10=8.59%, 20=10.68%, 50=40.49% lat (msec) : 100=25.65%, 250=4.04% cpu : usr=0.05%, sys=6.33%, ctx=1762, 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=179342: Sat Aug 15 16:26:29 2026 read: IOPS=12, BW=202KiB/s (207kB/s)(6256KiB/30954msec) clat (usec): min=30, max=214435, avg=45085.06, stdev=28556.73 lat (usec): min=31, max=214437, avg=45095.82, stdev=28558.77 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 74], 10.00th=[ 15401], 20.00th=[ 23200], | 30.00th=[ 28443], 40.00th=[ 36963], 50.00th=[ 41681], 60.00th=[ 48497], | 70.00th=[ 55313], 80.00th=[ 63701], 90.00th=[ 76022], 95.00th=[ 92799], | 99.00th=[135267], 99.50th=[145753], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 63, max= 381, per=26.13%, avg=202.02, stdev=74.16, samples=60 iops : min= 3, max= 23, avg=11.90, stdev= 4.64, samples=60 write: IOPS=12, BW=195KiB/s (200kB/s)(6032KiB/30954msec); 0 zone resets clat (usec): min=1563, max=224107, avg=34446.60, stdev=33727.06 lat (usec): min=1564, max=224108, avg=34449.07, stdev=33726.98 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1975], 10.00th=[ 3687], 20.00th=[ 7111], | 30.00th=[ 10683], 40.00th=[ 17695], 50.00th=[ 23987], 60.00th=[ 32113], | 70.00th=[ 42206], 80.00th=[ 58983], 90.00th=[ 76022], 95.00th=[107480], | 99.00th=[143655], 99.50th=[187696], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 31, max= 414, per=23.65%, avg=192.50, stdev=96.02, samples=60 iops : min= 1, max= 25, avg=11.30, stdev= 6.06, samples=60 lat (usec) : 50=0.52%, 100=2.60%, 250=0.52%, 500=0.13% lat (msec) : 2=2.73%, 4=3.12%, 10=8.33%, 20=10.68%, 50=39.97% lat (msec) : 100=25.78%, 250=5.60% cpu : usr=0.09%, sys=5.96%, ctx=1819, 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=179344: Sat Aug 15 16:26:29 2026 read: IOPS=13, BW=212KiB/s (217kB/s)(6032KiB/28505msec) clat (usec): min=36, max=177313, avg=41403.40, stdev=28444.53 lat (usec): min=37, max=177314, avg=41405.21, stdev=28444.95 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 67], 10.00th=[ 258], 20.00th=[ 21890], | 30.00th=[ 27132], 40.00th=[ 31851], 50.00th=[ 35914], 60.00th=[ 42730], | 70.00th=[ 49546], 80.00th=[ 59507], 90.00th=[ 78119], 95.00th=[ 91751], | 99.00th=[145753], 99.50th=[154141], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 63, max= 448, per=27.39%, avg=211.69, stdev=77.44, samples=55 iops : min= 3, max= 28, avg=12.53, stdev= 4.94, samples=55 write: IOPS=13, BW=219KiB/s (225kB/s)(6256KiB/28505msec); 0 zone resets clat (usec): min=1276, max=188146, avg=32459.69, stdev=32346.24 lat (usec): min=1276, max=188148, avg=32462.49, stdev=32346.95 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2180], 10.00th=[ 3228], 20.00th=[ 5473], | 30.00th=[ 9765], 40.00th=[ 15664], 50.00th=[ 23987], 60.00th=[ 30016], | 70.00th=[ 40109], 80.00th=[ 54789], 90.00th=[ 74974], 95.00th=[ 93848], | 99.00th=[160433], 99.50th=[185598], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 63, max= 411, per=27.17%, avg=221.13, stdev=75.89, samples=55 iops : min= 3, max= 25, avg=13.13, stdev= 4.74, samples=55 lat (usec) : 50=0.52%, 100=3.91%, 250=0.26%, 500=0.65% lat (msec) : 2=2.21%, 4=4.69%, 10=9.11%, 20=9.64%, 50=42.45% lat (msec) : 100=22.40%, 250=4.17% cpu : usr=0.07%, sys=6.51%, ctx=1727, 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=774KiB/s (792kB/s), 191KiB/s-212KiB/s (195kB/s-217kB/s), io=23.4MiB (24.5MB), run=28505-30954msec WRITE: bw=814KiB/s (834kB/s), 195KiB/s-219KiB/s (200kB/s-225kB/s), io=24.6MiB (25.8MB), run=28505-30954msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179338: Sat Aug 15 16:26:39 2026 read: IOPS=9, BW=145KiB/s (148kB/s)(5920KiB/40938msec) clat (msec): min=6, max=230, avg=45.37, stdev=37.26 lat (msec): min=6, max=230, avg=45.37, stdev=37.26 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 64], 90.00th=[ 97], 95.00th=[ 127], | 99.00th=[ 180], 99.50th=[ 207], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 31, max= 384, per=24.50%, avg=142.58, stdev=82.45, samples=79 iops : min= 1, max= 24, avg= 8.08, stdev= 5.24, samples=79 write: IOPS=9, BW=156KiB/s (159kB/s)(6368KiB/40938msec); 0 zone resets clat (msec): min=12, max=226, avg=59.84, stdev=39.74 lat (msec): min=12, max=226, avg=59.84, stdev=39.74 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 89], 90.00th=[ 118], 95.00th=[ 140], | 99.00th=[ 199], 99.50th=[ 218], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 21, max= 350, per=25.06%, avg=153.61, stdev=83.92, samples=80 iops : min= 1, max= 21, avg= 8.78, stdev= 5.32, samples=80 lat (msec) : 10=1.30%, 20=10.94%, 50=51.69%, 100=23.44%, 250=12.63% cpu : usr=0.07%, sys=2.49%, ctx=1390, 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=179340: Sat Aug 15 16:26:39 2026 read: IOPS=8, BW=140KiB/s (143kB/s)(5744KiB/41109msec) clat (msec): min=5, max=237, avg=44.48, stdev=38.00 lat (msec): min=5, max=237, avg=44.48, stdev=38.00 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 59], 90.00th=[ 92], 95.00th=[ 133], | 99.00th=[ 201], 99.50th=[ 220], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 22, max= 411, per=24.67%, avg=143.56, stdev=81.76, samples=77 iops : min= 1, max= 25, avg= 8.14, stdev= 5.19, samples=77 write: IOPS=9, BW=159KiB/s (163kB/s)(6544KiB/41109msec); 0 zone resets clat (msec): min=11, max=250, avg=60.77, stdev=40.14 lat (msec): min=11, max=250, avg=60.77, stdev=40.14 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 71], 80.00th=[ 88], 90.00th=[ 116], 95.00th=[ 138], | 99.00th=[ 205], 99.50th=[ 213], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 31, max= 384, per=25.23%, avg=154.69, stdev=80.59, samples=80 iops : min= 1, max= 24, avg= 8.84, stdev= 5.13, samples=80 lat (msec) : 10=1.30%, 20=11.20%, 50=49.48%, 100=26.43%, 250=11.46% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.28%, ctx=1266, 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=179341: Sat Aug 15 16:26:39 2026 read: IOPS=9, BW=155KiB/s (158kB/s)(6256KiB/40422msec) clat (msec): min=6, max=232, avg=44.60, stdev=36.78 lat (msec): min=6, max=232, avg=44.60, stdev=36.78 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 62], 90.00th=[ 99], 95.00th=[ 127], | 99.00th=[ 180], 99.50th=[ 205], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 31, max= 478, per=27.01%, avg=157.18, stdev=100.97, samples=78 iops : min= 1, max= 29, avg= 9.00, stdev= 6.40, samples=78 write: IOPS=9, BW=149KiB/s (153kB/s)(6032KiB/40422msec); 0 zone resets clat (msec): min=10, max=248, avg=60.64, stdev=39.93 lat (msec): min=10, max=248, avg=60.64, stdev=39.93 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 73], 80.00th=[ 90], 90.00th=[ 117], 95.00th=[ 142], | 99.00th=[ 215], 99.50th=[ 230], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 31, max= 384, per=24.36%, avg=149.35, stdev=79.22, samples=78 iops : min= 1, max= 24, avg= 8.50, stdev= 5.03, samples=78 lat (msec) : 10=1.04%, 20=10.94%, 50=50.52%, 100=25.00%, 250=12.50% cpu : usr=0.06%, sys=2.38%, ctx=1335, 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=179343: Sat Aug 15 16:26:39 2026 read: IOPS=9, BW=148KiB/s (152kB/s)(6032KiB/40644msec) clat (msec): min=7, max=199, avg=42.97, stdev=32.29 lat (msec): min=7, max=199, avg=42.97, stdev=32.29 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 62], 90.00th=[ 91], 95.00th=[ 115], | 99.00th=[ 148], 99.50th=[ 197], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 31, max= 384, per=25.64%, avg=149.23, stdev=86.05, samples=79 iops : min= 1, max= 24, avg= 8.49, stdev= 5.51, samples=79 write: IOPS=9, BW=154KiB/s (158kB/s)(6256KiB/40644msec); 0 zone resets clat (msec): min=11, max=221, avg=61.76, stdev=38.41 lat (msec): min=11, max=221, avg=61.77, stdev=38.41 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 52], 60.00th=[ 61], | 70.00th=[ 74], 80.00th=[ 91], 90.00th=[ 115], 95.00th=[ 133], | 99.00th=[ 192], 99.50th=[ 220], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 31, max= 445, per=25.16%, avg=154.22, stdev=84.46, samples=80 iops : min= 1, max= 27, avg= 8.81, stdev= 5.34, samples=80 lat (msec) : 10=1.04%, 20=12.50%, 50=46.61%, 100=28.39%, 250=11.46% cpu : usr=0.06%, sys=2.34%, ctx=1341, 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=583KiB/s (597kB/s), 140KiB/s-155KiB/s (143kB/s-158kB/s), io=23.4MiB (24.5MB), run=40422-41109msec WRITE: bw=613KiB/s (628kB/s), 149KiB/s-159KiB/s (153kB/s-163kB/s), io=24.6MiB (25.8MB), run=40422-41109msec 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=179356: Sat Aug 15 16:26:55 2026 read: IOPS=1, BW=1205KiB/s (1234kB/s)(7168KiB/5947msec) clat (msec): min=82, max=482, avg=184.06, stdev=133.88 lat (msec): min=82, max=482, avg=184.06, stdev=133.88 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 131], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 146], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 161], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 1885, max= 4208, per=100.00%, avg=3390.67, stdev=1305.54, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=0, BW=861KiB/s (882kB/s)(5120KiB/5947msec); 0 zone resets clat (msec): min=149, max=2997, avg=903.63, stdev=1178.96 lat (msec): min=150, max=2997, avg=903.78, stdev=1178.95 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 2003, max= 3984, per=60.15%, avg=2672.67, stdev=1135.73, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=1.95%, ctx=67, 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=179357: Sat Aug 15 16:26:55 2026 read: IOPS=0, BW=317KiB/s (325kB/s)(2048KiB/6453msec) clat (msec): min=87, max=143, avg=115.63, stdev=39.95 lat (msec): min=87, max=143, avg=115.63, stdev=39.95 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 88], | 30.00th=[ 88], 40.00th=[ 88], 50.00th=[ 88], 60.00th=[ 144], | 70.00th=[ 144], 80.00th=[ 144], 90.00th=[ 144], 95.00th=[ 144], | 99.00th=[ 144], 99.50th=[ 144], 99.90th=[ 144], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 1426, max= 1992, per=53.86%, avg=1709.00, stdev=400.22, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1587KiB/s (1625kB/s)(10.0MiB/6453msec); 0 zone resets clat (msec): min=130, max=2714, avg=617.74, stdev=778.48 lat (msec): min=130, max=2715, avg=617.98, stdev=778.79 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 163], | 30.00th=[ 207], 40.00th=[ 224], 50.00th=[ 321], 60.00th=[ 342], | 70.00th=[ 542], 80.00th=[ 584], 90.00th=[ 961], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 1885, max= 4278, per=60.90%, avg=2706.00, stdev=1131.65, samples=6 iops : min= 1, max= 4, avg= 1.83, stdev= 1.33, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=16.67%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.72%, ctx=110, 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=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=179358: Sat Aug 15 16:26:55 2026 read: IOPS=1, BW=1587KiB/s (1625kB/s)(6144KiB/3871msec) clat (msec): min=133, max=397, avg=246.91, stdev=99.11 lat (msec): min=133, max=397, avg=246.91, stdev=99.11 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 232], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 2023, max= 4079, per=100.00%, avg=3362.00, stdev=1160.58, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1587KiB/s (1625kB/s)(6144KiB/3871msec); 0 zone resets clat (msec): min=134, max=573, avg=375.98, stdev=188.76 lat (msec): min=134, max=573, avg=376.08, stdev=188.76 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 464], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1885, max= 2868, per=48.66%, avg=2162.00, stdev=399.04, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=50.00%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=4.50%, ctx=71, 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=179359: Sat Aug 15 16:26:55 2026 read: IOPS=0, BW=799KiB/s (818kB/s)(5120KiB/6411msec) clat (msec): min=116, max=488, avg=243.85, stdev=153.23 lat (msec): min=116, max=488, avg=243.85, stdev=153.23 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 184], 60.00th=[ 184], | 70.00th=[ 296], 80.00th=[ 296], 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= 3984, max= 4007, per=100.00%, avg=3995.50, stdev=16.26, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1118KiB/s (1145kB/s)(7168KiB/6411msec); 0 zone resets clat (msec): min=153, max=2796, avg=715.73, stdev=931.01 lat (msec): min=153, max=2796, avg=716.22, stdev=930.95 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 228], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 451], 80.00th=[ 625], 90.00th=[ 2802], 95.00th=[ 2802], | 99.00th=[ 2802], 99.50th=[ 2802], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 1885, max= 4047, per=57.86%, avg=2570.80, stdev=908.67, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.81%, ctx=68, 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=3174KiB/s (3250kB/s), 317KiB/s-1587KiB/s (325kB/s-1625kB/s), io=20.0MiB (20.0MB), run=3871-6453msec WRITE: bw=4443KiB/s (4550kB/s), 861KiB/s-1587KiB/s (882kB/s-1625kB/s), io=28.0MiB (29.4MB), run=3871-6453msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179361: Sat Aug 15 16:26:56 2026 read: IOPS=1, BW=1133KiB/s (1160kB/s)(7168KiB/6326msec) clat (msec): min=74, max=418, avg=251.99, stdev=117.63 lat (msec): min=74, max=418, avg=252.00, stdev=117.63 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 169], | 30.00th=[ 220], 40.00th=[ 220], 50.00th=[ 226], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 372], 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= 1932, max= 2998, per=67.74%, avg=2192.60, stdev=453.29, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 write: IOPS=0, BW=809KiB/s (829kB/s)(5120KiB/6326msec); 0 zone resets clat (msec): min=93, max=3049, avg=912.07, stdev=1218.72 lat (msec): min=93, max=3050, avg=912.15, stdev=1218.75 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 3037], 95.00th=[ 3037], | 99.00th=[ 3037], 99.50th=[ 3037], 99.90th=[ 3037], 99.95th=[ 3037], | 99.99th=[ 3037] bw ( KiB/s): min= 1932, max= 4079, per=54.79%, avg=2483.25, stdev=1063.99, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=7.84%, ctx=243, 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=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=179362: Sat Aug 15 16:26:56 2026 read: IOPS=0, BW=330KiB/s (338kB/s)(2048KiB/6202msec) clat (msec): min=93, max=209, avg=151.65, stdev=82.41 lat (msec): min=93, max=209, avg=151.65, stdev=82.41 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 94], | 30.00th=[ 94], 40.00th=[ 94], 50.00th=[ 94], 60.00th=[ 211], | 70.00th=[ 211], 80.00th=[ 211], 90.00th=[ 211], 95.00th=[ 211], | 99.00th=[ 211], 99.50th=[ 211], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 1965, max= 1996, per=61.18%, avg=1980.50, stdev=21.92, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1651KiB/s (1691kB/s)(10.0MiB/6202msec); 0 zone resets clat (msec): min=106, max=2702, avg=589.61, stdev=757.44 lat (msec): min=106, max=2702, avg=589.73, stdev=757.54 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 167], | 30.00th=[ 243], 40.00th=[ 355], 50.00th=[ 405], 60.00th=[ 418], | 70.00th=[ 435], 80.00th=[ 451], 90.00th=[ 625], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 1965, max= 4071, per=66.56%, avg=3016.50, stdev=1096.01, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.98%, ctx=147, 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=179363: Sat Aug 15 16:26:56 2026 read: IOPS=1, BW=1061KiB/s (1087kB/s)(6144KiB/5789msec) clat (msec): min=2, max=2616, avg=543.06, stdev=1018.02 lat (msec): min=2, max=2616, avg=543.06, stdev=1018.02 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 126], | 30.00th=[ 126], 40.00th=[ 157], 50.00th=[ 157], 60.00th=[ 171], | 70.00th=[ 186], 80.00th=[ 186], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 2043, max= 4096, per=100.00%, avg=3334.33, stdev=1124.33, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1061KiB/s (1087kB/s)(6144KiB/5789msec); 0 zone resets clat (msec): min=104, max=993, avg=420.28, stdev=309.95 lat (msec): min=104, max=993, avg=420.38, stdev=309.97 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 435], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 1464, max= 2048, per=42.16%, avg=1910.67, stdev=224.53, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 4=8.33%, 250=50.00%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=10.09%, ctx=560, 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=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=179364: Sat Aug 15 16:26:56 2026 read: IOPS=0, BW=839KiB/s (859kB/s)(5120KiB/6103msec) clat (usec): min=475, max=358748, avg=142343.29, stdev=156883.96 lat (usec): min=477, max=358750, avg=142344.57, stdev=156884.03 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 478], | 30.00th=[ 709], 40.00th=[ 709], 50.00th=[108528], 60.00th=[108528], | 70.00th=[244319], 80.00th=[244319], 90.00th=[358613], 95.00th=[358613], | 99.00th=[358613], 99.50th=[358613], 99.90th=[358613], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 1932, max= 6095, per=100.00%, avg=4013.50, stdev=2943.69, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1175KiB/s (1203kB/s)(7168KiB/6103msec); 0 zone resets clat (msec): min=274, max=2894, avg=768.91, stdev=950.12 lat (msec): min=274, max=2894, avg=769.95, stdev=949.81 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 284], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 439], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 735], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 1617, max= 2048, per=42.52%, avg=1927.00, stdev=159.36, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=16.67%, 500=50.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.96%, ctx=134, 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=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=3237KiB/s (3315kB/s), 330KiB/s-1133KiB/s (338kB/s-1160kB/s), io=20.0MiB (20.0MB), run=5789-6326msec WRITE: bw=4532KiB/s (4641kB/s), 809KiB/s-1651KiB/s (829kB/s-1691kB/s), io=28.0MiB (29.4MB), run=5789-6326msec 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=179370: Sat Aug 15 16:27:09 2026 read: IOPS=0, BW=3640KiB/s (3727kB/s)(12.0MiB/3376msec) clat (msec): min=541, max=1372, avg=1052.98, stdev=447.75 lat (msec): min=541, max=1372, avg=1052.98, stdev=447.75 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7907, max= 8175, per=100.00%, avg=8041.00, stdev=189.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.15%, ctx=51, 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=179371: Sat Aug 15 16:27:09 2026 read: IOPS=0, BW=2374KiB/s (2431kB/s)(4096KiB/1725msec) clat (nsec): min=240432k, max=240432k, avg=240432124.00, stdev= 0.00 lat (nsec): min=240435k, max=240435k, avg=240434914.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 241], 80.00th=[ 241], 90.00th=[ 241], 95.00th=[ 241], | 99.00th=[ 241], 99.50th=[ 241], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 5970, max= 5970, per=100.00%, avg=5970.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4749KiB/s (4863kB/s)(8192KiB/1725msec); 0 zone resets clat (msec): min=640, max=685, avg=662.86, stdev=31.89 lat (msec): min=640, max=685, avg=663.30, stdev=31.82 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 684], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7641, max= 7641, per=68.30%, avg=7641.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=66.67% cpu : usr=0.00%, sys=8.64%, ctx=71, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179372: Sat Aug 15 16:27:09 2026 write: IOPS=1, BW=4195KiB/s (4296kB/s)(12.0MiB/2929msec); 0 zone resets clat (msec): min=406, max=1437, avg=909.74, stdev=516.22 lat (msec): min=406, max=1438, avg=910.19, stdev=516.46 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 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= 7641, max= 8047, per=70.12%, avg=7844.00, stdev=287.09, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.64%, ctx=58, 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=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=179373: Sat Aug 15 16:27:09 2026 write: IOPS=1, BW=5882KiB/s (6023kB/s)(12.0MiB/2089msec); 0 zone resets clat (msec): min=201, max=1408, avg=644.65, stdev=664.35 lat (msec): min=202, max=1409, avg=645.18, stdev=664.63 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 326], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 6340, max= 7641, per=62.49%, avg=6990.50, stdev=919.95, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=8.09%, ctx=64, 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=4853KiB/s (4970kB/s), 2374KiB/s-3640KiB/s (2431kB/s-3727kB/s), io=16.0MiB (16.8MB), run=1725-3376msec WRITE: bw=10.9MiB/s (11.5MB/s), 4195KiB/s-5882KiB/s (4296kB/s-6023kB/s), io=32.0MiB (33.6MB), run=1725-2929msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179375: Sat Aug 15 16:27:10 2026 read: IOPS=1, BW=5705KiB/s (5842kB/s)(12.0MiB/2154msec) clat (msec): min=686, max=767, avg=717.72, stdev=43.49 lat (msec): min=686, max=767, avg=717.72, stdev=43.49 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 5439, max= 8143, per=100.00%, avg=6791.00, stdev=1912.02, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.28%, sys=17.23%, ctx=449, majf=0, minf=7 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=179376: Sat Aug 15 16:27:10 2026 read: IOPS=0, BW=1284KiB/s (1314kB/s)(4096KiB/3191msec) clat (nsec): min=721828k, max=721828k, avg=721828079.00, stdev= 0.00 lat (nsec): min=721830k, max=721830k, avg=721829916.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 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= 7892, max= 7892, per=100.00%, avg=7892.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2567KiB/s (2629kB/s)(8192KiB/3191msec); 0 zone resets clat (msec): min=1178, max=1285, avg=1231.96, stdev=76.28 lat (msec): min=1178, max=1287, avg=1233.14, stdev=77.39 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8110, max= 8110, per=78.98%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=6.11%, ctx=192, 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=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=179377: Sat Aug 15 16:27:10 2026 write: IOPS=0, BW=3861KiB/s (3953kB/s)(12.0MiB/3183msec); 0 zone resets clat (msec): min=241, max=1532, avg=1060.00, stdev=711.57 lat (msec): min=242, max=1532, avg=1060.60, stdev=711.20 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 1401], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8143, max= 8143, per=79.30%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.43%, ctx=43, majf=0, minf=7 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=179378: Sat Aug 15 16:27:10 2026 write: IOPS=1, BW=4258KiB/s (4360kB/s)(12.0MiB/2886msec); 0 zone resets clat (msec): min=393, max=1399, avg=961.20, stdev=515.53 lat (msec): min=393, max=1400, avg=961.65, stdev=515.74 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8078, max= 8110, per=78.83%, avg=8094.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.50%, ctx=45, 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=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=5134KiB/s (5258kB/s), 1284KiB/s-5705KiB/s (1314kB/s-5842kB/s), io=16.0MiB (16.8MB), run=2154-3191msec WRITE: bw=10.0MiB/s (10.5MB/s), 2567KiB/s-4258KiB/s (2629kB/s-4360kB/s), io=32.0MiB (33.6MB), run=2886-3191msec