== sanity test 398b: DIO and buffer IO race ============== 12:02:26 (1787846546) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.13335 s, 7.1 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=144828: Thu Aug 27 12:05:33 2026 read: IOPS=9, BW=36.8KiB/s (37.7kB/s)(5992KiB/162617msec) clat (usec): min=32, max=1089.1k, avg=51237.95, stdev=49273.86 lat (usec): min=32, max=1089.1k, avg=51242.23, stdev=49272.17 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 56], 10.00th=[ 66], | 20.00th=[ 20055], 30.00th=[ 27395], 40.00th=[ 34866], | 50.00th=[ 42730], 60.00th=[ 52167], 70.00th=[ 63177], | 80.00th=[ 79168], 90.00th=[ 103285], 95.00th=[ 126354], | 99.00th=[ 196084], 99.50th=[ 219153], 99.90th=[ 358613], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 102, per=25.46%, avg=36.92, stdev=18.16, samples=315 iops : min= 1, max= 25, avg= 8.57, stdev= 4.58, samples=315 write: IOPS=9, BW=38.7KiB/s (39.6kB/s)(6296KiB/162617msec); 0 zone resets clat (usec): min=870, max=465069, avg=54249.34, stdev=59511.11 lat (usec): min=871, max=465071, avg=54253.59, stdev=59509.96 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1352], 20.00th=[ 3752], | 30.00th=[ 9241], 40.00th=[ 23200], 50.00th=[ 38011], 60.00th=[ 53740], | 70.00th=[ 70779], 80.00th=[ 93848], 90.00th=[130548], 95.00th=[164627], | 99.00th=[246416], 99.50th=[299893], 99.90th=[463471], 99.95th=[463471], | 99.99th=[463471] bw ( KiB/s): min= 7, max= 96, per=25.44%, avg=38.67, stdev=18.56, samples=316 iops : min= 1, max= 24, avg= 9.00, stdev= 4.68, samples=316 lat (usec) : 50=1.04%, 100=5.31%, 250=0.46%, 750=0.03%, 1000=0.23% lat (msec) : 2=7.00%, 4=3.45%, 10=5.53%, 20=6.15%, 50=28.55% lat (msec) : 100=27.64%, 250=14.00%, 500=0.59%, 2000=0.03% cpu : usr=0.06%, sys=4.13%, ctx=6190, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144830: Thu Aug 27 12:05:33 2026 read: IOPS=9, BW=36.1KiB/s (37.0kB/s)(5940KiB/164326msec) clat (usec): min=32, max=1013.3k, avg=51163.74, stdev=47974.64 lat (usec): min=33, max=1013.3k, avg=51169.08, stdev=47972.33 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 60], 10.00th=[ 80], | 20.00th=[ 20841], 30.00th=[ 29230], 40.00th=[ 35390], | 50.00th=[ 43254], 60.00th=[ 52167], 70.00th=[ 63177], | 80.00th=[ 77071], 90.00th=[ 100140], 95.00th=[ 120062], | 99.00th=[ 177210], 99.50th=[ 196084], 99.90th=[ 591397], | 99.95th=[1010828], 99.99th=[1010828] bw ( KiB/s): min= 5, max= 87, per=24.89%, avg=36.09, stdev=17.40, samples=319 iops : min= 1, max= 21, avg= 8.36, stdev= 4.38, samples=319 write: IOPS=9, BW=38.6KiB/s (39.6kB/s)(6348KiB/164326msec); 0 zone resets clat (usec): min=960, max=480057, avg=55362.09, stdev=59227.25 lat (usec): min=961, max=480059, avg=55363.84, stdev=59227.22 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1434], 20.00th=[ 4883], | 30.00th=[ 11600], 40.00th=[ 24249], 50.00th=[ 38536], 60.00th=[ 53740], | 70.00th=[ 72877], 80.00th=[ 94897], 90.00th=[135267], 95.00th=[173016], | 99.00th=[254804], 99.50th=[283116], 99.90th=[446694], 99.95th=[480248], | 99.99th=[480248] bw ( KiB/s): min= 7, max= 111, per=25.29%, avg=38.43, stdev=18.37, samples=320 iops : min= 1, max= 27, avg= 8.95, stdev= 4.64, samples=320 lat (usec) : 50=0.68%, 100=4.56%, 250=0.55%, 500=0.13%, 750=0.10% lat (usec) : 1000=0.10% lat (msec) : 2=6.61%, 4=2.73%, 10=5.57%, 20=7.36%, 50=28.94% lat (msec) : 100=28.19%, 250=13.74%, 500=0.68%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.18%, ctx=6346, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144831: Thu Aug 27 12:05:33 2026 read: IOPS=9, BW=36.6KiB/s (37.5kB/s)(6028KiB/164710msec) clat (usec): min=30, max=462390, avg=51870.88, stdev=42274.78 lat (usec): min=31, max=462392, avg=51880.86, stdev=42279.36 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 77], 20.00th=[ 21890], | 30.00th=[ 28967], 40.00th=[ 35390], 50.00th=[ 42730], 60.00th=[ 52691], | 70.00th=[ 64226], 80.00th=[ 80217], 90.00th=[102237], 95.00th=[123208], | 99.00th=[185598], 99.50th=[229639], 99.90th=[337642], 99.95th=[463471], | 99.99th=[463471] bw ( KiB/s): min= 7, max= 102, per=25.28%, avg=36.65, stdev=17.91, samples=318 iops : min= 1, max= 25, avg= 8.50, stdev= 4.52, samples=318 write: IOPS=9, BW=38.0KiB/s (38.9kB/s)(6260KiB/164710msec); 0 zone resets clat (usec): min=850, max=1032.3k, avg=54998.63, stdev=62072.62 lat (usec): min=852, max=1032.3k, avg=55002.52, stdev=62074.09 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1352], | 20.00th=[ 4490], 30.00th=[ 10421], 40.00th=[ 26608], | 50.00th=[ 40633], 60.00th=[ 54264], 70.00th=[ 71828], | 80.00th=[ 93848], 90.00th=[ 130548], 95.00th=[ 162530], | 99.00th=[ 242222], 99.50th=[ 287310], 99.90th=[ 616563], | 99.95th=[1035994], 99.99th=[1035994] bw ( KiB/s): min= 7, max= 103, per=24.82%, avg=37.73, stdev=17.74, samples=321 iops : min= 1, max= 25, avg= 8.77, stdev= 4.46, samples=321 lat (usec) : 50=0.68%, 100=4.85%, 250=0.46%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.33% lat (msec) : 2=6.74%, 4=2.57%, 10=5.57%, 20=6.15%, 50=29.56% lat (msec) : 100=28.39%, 250=13.93%, 500=0.49%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=4.09%, ctx=6166, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144832: Thu Aug 27 12:05:33 2026 read: IOPS=9, BW=36.7KiB/s (37.6kB/s)(6052KiB/164975msec) clat (usec): min=21, max=539498, avg=50848.48, stdev=44010.95 lat (usec): min=21, max=539500, avg=50853.63, stdev=44009.67 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 67], 20.00th=[ 19530], | 30.00th=[ 27395], 40.00th=[ 33424], 50.00th=[ 40633], 60.00th=[ 51119], | 70.00th=[ 62129], 80.00th=[ 79168], 90.00th=[103285], 95.00th=[130548], | 99.00th=[200279], 99.50th=[248513], 99.90th=[312476], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 7, max= 101, per=25.66%, avg=37.21, stdev=17.64, samples=314 iops : min= 1, max= 25, avg= 8.65, stdev= 4.47, samples=314 write: IOPS=9, BW=37.8KiB/s (38.7kB/s)(6236KiB/164975msec); 0 zone resets clat (usec): min=772, max=1309.0k, avg=56142.45, stdev=66209.44 lat (usec): min=774, max=1309.0k, avg=56149.34, stdev=66206.19 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1418], | 20.00th=[ 4178], 30.00th=[ 10290], 40.00th=[ 23462], | 50.00th=[ 40109], 60.00th=[ 56361], 70.00th=[ 73925], | 80.00th=[ 96994], 90.00th=[ 132645], 95.00th=[ 168821], | 99.00th=[ 256902], 99.50th=[ 287310], 99.90th=[ 400557], | 99.95th=[1317012], 99.99th=[1317012] bw ( KiB/s): min= 7, max= 120, per=24.77%, avg=37.65, stdev=17.84, samples=320 iops : min= 1, max= 30, avg= 8.74, stdev= 4.50, samples=320 lat (usec) : 50=0.91%, 100=5.57%, 250=0.33%, 500=0.03%, 1000=0.20% lat (msec) : 2=6.93%, 4=2.99%, 10=5.21%, 20=7.03%, 50=28.42% lat (msec) : 100=27.21%, 250=14.39%, 500=0.72%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.09%, ctx=6165, majf=0, minf=20 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=146KiB/s (149kB/s), 36.1KiB/s-36.8KiB/s (37.0kB/s-37.7kB/s), io=23.4MiB (24.6MB), run=162617-164975msec WRITE: bw=152KiB/s (156kB/s), 37.8KiB/s-38.7KiB/s (38.7kB/s-39.6kB/s), io=24.6MiB (25.7MB), run=162617-164975msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144833: Thu Aug 27 12:08:26 2026 read: IOPS=4, BW=17.8KiB/s (18.2kB/s)(5992KiB/336891msec) clat (msec): min=6, max=1080, avg=43.89, stdev=52.75 lat (msec): min=6, max=1080, avg=43.89, stdev=52.74 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 100], 95.00th=[ 134], | 99.00th=[ 222], 99.50th=[ 284], 99.90th=[ 575], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 87, per=30.71%, avg=21.81, stdev=15.00, samples=528 iops : min= 1, max= 21, avg= 4.80, stdev= 3.77, samples=528 write: IOPS=4, BW=18.7KiB/s (19.1kB/s)(6296KiB/336891msec); 0 zone resets clat (msec): min=37, max=700, avg=172.04, stdev=91.36 lat (msec): min=37, max=700, avg=172.05, stdev=91.36 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 77], 10.00th=[ 87], 20.00th=[ 102], | 30.00th=[ 117], 40.00th=[ 132], 50.00th=[ 146], 60.00th=[ 167], | 70.00th=[ 192], 80.00th=[ 230], 90.00th=[ 288], 95.00th=[ 351], | 99.00th=[ 514], 99.50th=[ 567], 99.90th=[ 693], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 47, per=25.00%, avg=18.50, stdev= 9.15, samples=648 iops : min= 1, max= 11, avg= 3.96, stdev= 2.34, samples=648 lat (msec) : 10=2.02%, 20=14.42%, 50=20.28%, 100=16.99%, 250=37.73% lat (msec) : 500=7.94%, 750=0.59%, 2000=0.03% cpu : usr=0.04%, sys=0.90%, ctx=5086, 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=144834: Thu Aug 27 12:08:26 2026 read: IOPS=4, BW=17.7KiB/s (18.1kB/s)(5940KiB/336391msec) clat (msec): min=6, max=962, avg=44.10, stdev=53.90 lat (msec): min=6, max=962, avg=44.11, stdev=53.90 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 59], 90.00th=[ 102], 95.00th=[ 138], | 99.00th=[ 245], 99.50th=[ 351], 99.90th=[ 464], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 79, per=30.67%, avg=21.78, stdev=14.97, samples=523 iops : min= 1, max= 19, avg= 4.79, stdev= 3.77, samples=523 write: IOPS=4, BW=18.9KiB/s (19.3kB/s)(6348KiB/336391msec); 0 zone resets clat (msec): min=40, max=695, avg=170.37, stdev=87.61 lat (msec): min=40, max=695, avg=170.38, stdev=87.61 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 73], 10.00th=[ 85], 20.00th=[ 102], | 30.00th=[ 117], 40.00th=[ 131], 50.00th=[ 146], 60.00th=[ 169], | 70.00th=[ 194], 80.00th=[ 228], 90.00th=[ 292], 95.00th=[ 347], | 99.00th=[ 468], 99.50th=[ 527], 99.90th=[ 659], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 6, max= 56, per=25.50%, avg=18.87, stdev= 9.20, samples=641 iops : min= 1, max= 14, avg= 4.06, stdev= 2.34, samples=641 lat (msec) : 10=1.86%, 20=13.77%, 50=21.26%, 100=16.21%, 250=38.41% lat (msec) : 500=8.11%, 750=0.36%, 1000=0.03% cpu : usr=0.04%, sys=0.94%, ctx=5216, 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=144835: Thu Aug 27 12:08:26 2026 read: IOPS=4, BW=17.9KiB/s (18.3kB/s)(6028KiB/337572msec) clat (msec): min=5, max=536, avg=44.87, stdev=47.50 lat (msec): min=5, max=536, avg=44.87, stdev=47.50 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 67], 90.00th=[ 107], 95.00th=[ 136], | 99.00th=[ 203], 99.50th=[ 292], 99.90th=[ 456], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 6, max= 94, per=29.70%, avg=21.09, stdev=14.96, samples=546 iops : min= 1, max= 23, avg= 4.61, stdev= 3.78, samples=546 write: IOPS=4, BW=18.5KiB/s (18.0kB/s)(6260KiB/337572msec); 0 zone resets clat (msec): min=40, max=1117, avg=172.18, stdev=92.45 lat (msec): min=40, max=1117, avg=172.19, stdev=92.45 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 74], 10.00th=[ 87], 20.00th=[ 102], | 30.00th=[ 116], 40.00th=[ 133], 50.00th=[ 150], 60.00th=[ 167], | 70.00th=[ 192], 80.00th=[ 232], 90.00th=[ 296], 95.00th=[ 351], | 99.00th=[ 451], 99.50th=[ 542], 99.90th=[ 760], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 6, max= 47, per=25.28%, avg=18.70, stdev= 9.31, samples=636 iops : min= 1, max= 11, avg= 4.02, stdev= 2.36, samples=636 lat (msec) : 10=2.25%, 20=13.48%, 50=21.09%, 100=15.98%, 250=38.41% lat (msec) : 500=8.37%, 750=0.36%, 1000=0.03%, 2000=0.03% cpu : usr=0.04%, sys=0.92%, ctx=5096, 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=144836: Thu Aug 27 12:08:26 2026 read: IOPS=4, BW=18.0KiB/s (18.5kB/s)(6052KiB/335888msec) clat (msec): min=6, max=533, avg=43.86, stdev=49.23 lat (msec): min=6, max=533, avg=43.86, stdev=49.23 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 60], 90.00th=[ 106], 95.00th=[ 142], | 99.00th=[ 228], 99.50th=[ 321], 99.90th=[ 439], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 7, max= 87, per=30.87%, avg=21.92, stdev=15.43, samples=530 iops : min= 1, max= 21, avg= 4.82, stdev= 3.89, samples=530 write: IOPS=4, BW=18.6KiB/s (19.0kB/s)(6236KiB/335888msec); 0 zone resets clat (msec): min=34, max=1248, avg=172.66, stdev=92.47 lat (msec): min=34, max=1248, avg=172.66, stdev=92.47 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 75], 10.00th=[ 88], 20.00th=[ 105], | 30.00th=[ 118], 40.00th=[ 133], 50.00th=[ 150], 60.00th=[ 169], | 70.00th=[ 192], 80.00th=[ 230], 90.00th=[ 288], 95.00th=[ 351], | 99.00th=[ 477], 99.50th=[ 558], 99.90th=[ 751], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 6, max= 47, per=25.22%, avg=18.66, stdev= 9.12, samples=637 iops : min= 1, max= 11, avg= 4.00, stdev= 2.32, samples=637 lat (msec) : 10=2.21%, 20=14.26%, 50=21.32%, 100=14.71%, 250=38.93% lat (msec) : 500=8.07%, 750=0.42%, 1000=0.03%, 2000=0.03% cpu : usr=0.04%, sys=0.93%, ctx=5053, 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=71.1KiB/s (72.8kB/s), 17.7KiB/s-18.0KiB/s (18.1kB/s-18.5kB/s), io=23.4MiB (24.6MB), run=335888-337572msec WRITE: bw=74.5KiB/s (76.3kB/s), 18.5KiB/s-18.9KiB/s (18.0kB/s-19.3kB/s), io=24.6MiB (25.7MB), run=335888-337572msec 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=144897: Thu Aug 27 12:09:11 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(5920KiB/34423msec) clat (usec): min=34, max=154758, avg=43553.77, stdev=33401.59 lat (usec): min=34, max=154758, avg=43556.16, stdev=33402.05 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 63], 10.00th=[ 75], 20.00th=[ 971], | 30.00th=[ 26608], 40.00th=[ 32900], 50.00th=[ 40109], 60.00th=[ 48497], | 70.00th=[ 57410], 80.00th=[ 68682], 90.00th=[ 88605], 95.00th=[105382], | 99.00th=[135267], 99.50th=[154141], 99.90th=[154141], 99.95th=[154141], | 99.99th=[154141] bw ( KiB/s): min= 30, max= 433, per=24.55%, avg=170.63, stdev=73.67, samples=67 iops : min= 1, max= 27, avg= 9.87, stdev= 4.66, samples=67 write: IOPS=11, BW=185KiB/s (189kB/s)(6368KiB/34423msec); 0 zone resets clat (usec): min=1223, max=236873, avg=45162.26, stdev=46634.31 lat (usec): min=1227, max=236873, avg=45204.67, stdev=46711.14 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1991], 10.00th=[ 2900], 20.00th=[ 5407], | 30.00th=[ 8029], 40.00th=[ 14222], 50.00th=[ 28443], 60.00th=[ 45351], | 70.00th=[ 64750], 80.00th=[ 80217], 90.00th=[112722], 95.00th=[137364], | 99.00th=[189793], 99.50th=[193987], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 24, max= 345, per=25.28%, avg=185.06, stdev=72.77, samples=67 iops : min= 1, max= 21, avg=10.79, stdev= 4.60, samples=67 lat (usec) : 50=1.30%, 100=6.25%, 250=1.43%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.26% lat (msec) : 2=2.86%, 4=4.56%, 10=10.42%, 20=7.29%, 50=27.73% lat (msec) : 100=26.95%, 250=10.55% cpu : usr=0.05%, sys=4.76%, ctx=1515, 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=144898: Thu Aug 27 12:09:11 2026 read: IOPS=11, BW=181KiB/s (185kB/s)(5744KiB/31770msec) clat (usec): min=37, max=308129, avg=47154.29, stdev=37479.26 lat (usec): min=38, max=308131, avg=47158.46, stdev=37477.91 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 70], 10.00th=[ 80], 20.00th=[ 19268], | 30.00th=[ 30278], 40.00th=[ 35390], 50.00th=[ 43254], 60.00th=[ 50594], | 70.00th=[ 57934], 80.00th=[ 69731], 90.00th=[ 86508], 95.00th=[112722], | 99.00th=[179307], 99.50th=[179307], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 24, max= 340, per=26.06%, avg=181.10, stdev=74.80, samples=62 iops : min= 1, max= 21, avg=10.53, stdev= 4.77, samples=62 write: IOPS=12, BW=206KiB/s (211kB/s)(6544KiB/31770msec); 0 zone resets clat (usec): min=1307, max=260509, avg=35972.20, stdev=41480.15 lat (usec): min=1308, max=260512, avg=35975.15, stdev=41480.45 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2040], 10.00th=[ 2606], 20.00th=[ 5014], | 30.00th=[ 7832], 40.00th=[ 10945], 50.00th=[ 17957], 60.00th=[ 30278], | 70.00th=[ 44303], 80.00th=[ 62129], 90.00th=[ 96994], 95.00th=[124257], | 99.00th=[183501], 99.50th=[200279], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 31, max= 479, per=28.22%, avg=206.60, stdev=100.75, samples=62 iops : min= 1, max= 29, avg=12.15, stdev= 6.32, samples=62 lat (usec) : 50=0.52%, 100=6.12%, 250=1.17% lat (msec) : 2=2.60%, 4=5.99%, 10=10.94%, 20=10.03%, 50=29.30% lat (msec) : 100=25.13%, 250=7.94%, 500=0.26% cpu : usr=0.06%, sys=5.30%, ctx=1457, 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=144900: Thu Aug 27 12:09:11 2026 read: IOPS=11, BW=189KiB/s (193kB/s)(6256KiB/33107msec) clat (usec): min=41, max=210012, avg=46117.58, stdev=39248.54 lat (usec): min=41, max=210013, avg=46119.21, stdev=39248.54 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 62], 10.00th=[ 72], 20.00th=[ 115], | 30.00th=[ 24773], 40.00th=[ 33817], 50.00th=[ 40633], 60.00th=[ 50594], | 70.00th=[ 62653], 80.00th=[ 76022], 90.00th=[ 98042], 95.00th=[115868], | 99.00th=[160433], 99.50th=[202376], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 31, max= 596, per=27.94%, avg=194.21, stdev=91.97, samples=63 iops : min= 1, max= 37, avg=11.35, stdev= 5.85, samples=63 write: IOPS=11, BW=182KiB/s (187kB/s)(6032KiB/33107msec); 0 zone resets clat (usec): min=1501, max=283551, avg=38984.43, stdev=43571.40 lat (usec): min=1503, max=283555, avg=39006.34, stdev=43559.43 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2057], 10.00th=[ 3195], 20.00th=[ 5473], | 30.00th=[ 8356], 40.00th=[ 14353], 50.00th=[ 22152], 60.00th=[ 33817], | 70.00th=[ 49546], 80.00th=[ 66847], 90.00th=[ 99091], 95.00th=[120062], | 99.00th=[225444], 99.50th=[240124], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 31, max= 380, per=24.60%, avg=180.05, stdev=78.20, samples=64 iops : min= 1, max= 23, avg=10.47, stdev= 4.94, samples=64 lat (usec) : 50=0.78%, 100=8.85%, 250=2.08%, 500=0.26%, 750=0.13% lat (msec) : 2=2.08%, 4=4.95%, 10=10.16%, 20=7.68%, 50=27.73% lat (msec) : 100=26.17%, 250=8.98%, 500=0.13% cpu : usr=0.09%, sys=5.09%, ctx=1534, 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=144902: Thu Aug 27 12:09:11 2026 read: IOPS=11, BW=191KiB/s (196kB/s)(6032KiB/31554msec) clat (usec): min=35, max=194870, avg=45039.07, stdev=35054.88 lat (usec): min=36, max=194872, avg=45040.76, stdev=35054.93 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 67], 10.00th=[ 76], 20.00th=[ 13042], | 30.00th=[ 27919], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 47449], | 70.00th=[ 59507], 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[108528], | 99.00th=[154141], 99.50th=[187696], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 31, max= 414, per=27.50%, avg=191.15, stdev=82.37, samples=60 iops : min= 1, max= 25, avg=11.17, stdev= 5.15, samples=60 write: IOPS=12, BW=198KiB/s (203kB/s)(6256KiB/31554msec); 0 zone resets clat (usec): min=1342, max=262873, avg=36585.39, stdev=41812.65 lat (usec): min=1344, max=262875, avg=36606.82, stdev=41803.63 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1975], 10.00th=[ 2638], 20.00th=[ 4752], | 30.00th=[ 7308], 40.00th=[ 11338], 50.00th=[ 19006], 60.00th=[ 32900], | 70.00th=[ 49021], 80.00th=[ 62129], 90.00th=[ 91751], 95.00th=[120062], | 99.00th=[187696], 99.50th=[233833], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 62, max= 410, per=26.80%, avg=196.15, stdev=82.26, samples=61 iops : min= 3, max= 25, avg=11.48, stdev= 5.15, samples=61 lat (usec) : 50=0.65%, 100=7.16%, 250=0.78%, 500=0.39%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.73%, 4=6.51%, 10=10.42%, 20=8.07%, 50=30.08% lat (msec) : 100=25.91%, 250=6.90%, 500=0.13% cpu : usr=0.06%, sys=5.23%, ctx=1498, 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=696KiB/s (713kB/s), 172KiB/s-191KiB/s (176kB/s-196kB/s), io=23.4MiB (24.5MB), run=31554-34423msec WRITE: bw=732KiB/s (750kB/s), 182KiB/s-206KiB/s (187kB/s-211kB/s), io=24.6MiB (25.8MB), run=31554-34423msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144899: Thu Aug 27 12:09:55 2026 read: IOPS=4, BW=75.7KiB/s (77.5kB/s)(5920KiB/78217msec) clat (msec): min=8, max=272, avg=50.22, stdev=42.31 lat (msec): min=8, max=272, avg=50.22, stdev=42.31 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 53], 80.00th=[ 66], 90.00th=[ 97], 95.00th=[ 129], | 99.00th=[ 236], 99.50th=[ 271], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 256, per=27.24%, avg=83.36, stdev=51.49, samples=138 iops : min= 1, max= 16, avg= 4.38, stdev= 3.27, samples=138 write: IOPS=5, BW=81.4KiB/s (83.4kB/s)(6368KiB/78217msec); 0 zone resets clat (msec): min=43, max=503, avg=149.29, stdev=65.96 lat (msec): min=43, max=503, avg=149.29, stdev=65.96 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 72], 10.00th=[ 84], 20.00th=[ 100], | 30.00th=[ 113], 40.00th=[ 127], 50.00th=[ 138], 60.00th=[ 148], | 70.00th=[ 161], 80.00th=[ 188], 90.00th=[ 226], 95.00th=[ 284], | 99.00th=[ 401], 99.50th=[ 439], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 24, max= 192, per=25.42%, avg=81.86, stdev=34.13, samples=152 iops : min= 1, max= 12, avg= 4.29, stdev= 2.20, samples=152 lat (msec) : 10=0.39%, 20=8.07%, 50=24.22%, 100=21.74%, 250=41.28% lat (msec) : 500=4.17%, 750=0.13% cpu : usr=0.05%, sys=1.24%, ctx=1323, 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=144901: Thu Aug 27 12:09:55 2026 read: IOPS=4, BW=73.4KiB/s (75.2kB/s)(5744KiB/78233msec) clat (msec): min=8, max=318, avg=51.78, stdev=43.32 lat (msec): min=8, max=318, avg=51.78, stdev=43.32 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 19], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 36], 50.00th=[ 41], 60.00th=[ 47], | 70.00th=[ 55], 80.00th=[ 67], 90.00th=[ 96], 95.00th=[ 136], | 99.00th=[ 251], 99.50th=[ 279], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 24, max= 255, per=27.92%, avg=85.44, stdev=51.99, samples=131 iops : min= 1, max= 15, avg= 4.52, stdev= 3.25, samples=131 write: IOPS=5, BW=83.6KiB/s (85.7kB/s)(6544KiB/78233msec); 0 zone resets clat (msec): min=36, max=412, avg=145.64, stdev=62.38 lat (msec): min=36, max=412, avg=145.64, stdev=62.38 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 69], 10.00th=[ 81], 20.00th=[ 94], | 30.00th=[ 109], 40.00th=[ 122], 50.00th=[ 133], 60.00th=[ 150], | 70.00th=[ 165], 80.00th=[ 188], 90.00th=[ 234], 95.00th=[ 271], | 99.00th=[ 351], 99.50th=[ 355], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 30, max= 192, per=26.31%, avg=84.71, stdev=35.41, samples=150 iops : min= 1, max= 12, avg= 4.47, stdev= 2.32, samples=150 lat (msec) : 10=0.39%, 20=5.99%, 50=25.26%, 100=24.48%, 250=39.32% lat (msec) : 500=4.56% cpu : usr=0.04%, sys=1.22%, ctx=1306, 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=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=144903: Thu Aug 27 12:09:55 2026 read: IOPS=5, BW=80.4KiB/s (82.3kB/s)(6256KiB/77833msec) clat (msec): min=6, max=323, avg=50.47, stdev=43.57 lat (msec): min=6, max=323, avg=50.47, stdev=43.57 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 15], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 51], 80.00th=[ 64], 90.00th=[ 94], 95.00th=[ 140], | 99.00th=[ 243], 99.50th=[ 284], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 30, max= 287, per=30.08%, avg=92.04, stdev=53.83, samples=134 iops : min= 1, max= 17, avg= 4.93, stdev= 3.40, samples=134 write: IOPS=4, BW=77.5KiB/s (79.4kB/s)(6032KiB/77833msec); 0 zone resets clat (msec): min=42, max=496, avg=153.49, stdev=70.89 lat (msec): min=42, max=496, avg=153.50, stdev=70.89 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 73], 10.00th=[ 84], 20.00th=[ 99], | 30.00th=[ 110], 40.00th=[ 125], 50.00th=[ 138], 60.00th=[ 150], | 70.00th=[ 171], 80.00th=[ 201], 90.00th=[ 255], 95.00th=[ 296], | 99.00th=[ 435], 99.50th=[ 464], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 29, max= 191, per=24.86%, avg=80.05, stdev=34.41, samples=147 iops : min= 1, max= 11, avg= 4.17, stdev= 2.19, samples=147 lat (msec) : 10=0.78%, 20=5.86%, 50=29.04%, 100=21.48%, 250=37.37% lat (msec) : 500=5.47% cpu : usr=0.03%, sys=1.34%, ctx=1482, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144904: Thu Aug 27 12:09:55 2026 read: IOPS=4, BW=78.1KiB/s (80.0kB/s)(6032KiB/77209msec) clat (msec): min=7, max=307, avg=51.32, stdev=45.53 lat (msec): min=7, max=307, avg=51.32, stdev=45.53 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 68], 90.00th=[ 94], 95.00th=[ 150], | 99.00th=[ 255], 99.50th=[ 300], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 30, max= 319, per=29.09%, avg=89.02, stdev=58.73, samples=132 iops : min= 1, max= 19, avg= 4.75, stdev= 3.75, samples=132 write: IOPS=5, BW=81.0KiB/s (82.0kB/s)(6256KiB/77209msec); 0 zone resets clat (msec): min=35, max=421, avg=147.15, stdev=61.26 lat (msec): min=35, max=421, avg=147.16, stdev=61.26 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 77], 10.00th=[ 84], 20.00th=[ 101], | 30.00th=[ 112], 40.00th=[ 121], 50.00th=[ 131], 60.00th=[ 146], | 70.00th=[ 165], 80.00th=[ 188], 90.00th=[ 232], 95.00th=[ 271], | 99.00th=[ 363], 99.50th=[ 409], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 24, max= 191, per=25.78%, avg=83.01, stdev=34.23, samples=148 iops : min= 1, max= 11, avg= 4.36, stdev= 2.18, samples=148 lat (msec) : 10=0.52%, 20=7.42%, 50=23.96%, 100=22.79%, 250=40.89% lat (msec) : 500=4.43% cpu : usr=0.04%, sys=1.19%, ctx=1348, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=306KiB/s (314kB/s), 73.4KiB/s-80.4KiB/s (75.2kB/s-82.3kB/s), io=23.4MiB (24.5MB), run=77209-78233msec WRITE: bw=322KiB/s (330kB/s), 77.5KiB/s-83.6KiB/s (79.4kB/s-85.7kB/s), io=24.6MiB (25.8MB), run=77209-78233msec 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=144930: Thu Aug 27 12:10:09 2026 read: IOPS=1, BW=1766KiB/s (1808kB/s)(7168KiB/4059msec) clat (usec): min=510, max=261696, avg=176430.96, stdev=84969.52 lat (usec): min=512, max=261698, avg=176432.61, stdev=84969.32 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[168821], | 30.00th=[173016], 40.00th=[173016], 50.00th=[177210], 60.00th=[221250], | 70.00th=[221250], 80.00th=[231736], 90.00th=[261096], 95.00th=[261096], | 99.00th=[261096], 99.50th=[261096], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 2023, max= 3900, per=58.55%, avg=2711.50, stdev=888.55, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1261KiB/s (1292kB/s)(5120KiB/4059msec); 0 zone resets clat (msec): min=267, max=954, avg=544.68, stdev=265.58 lat (msec): min=269, max=954, avg=545.22, stdev=265.02 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 514], 60.00th=[ 514], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 1928, max= 2023, per=30.56%, avg=1981.00, stdev=49.32, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=11.34%, ctx=245, 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=144931: Thu Aug 27 12:10:09 2026 read: IOPS=0, BW=463KiB/s (474kB/s)(2048KiB/4422msec) clat (msec): min=64, max=147, avg=105.93, stdev=59.13 lat (msec): min=64, max=147, avg=105.94, stdev=59.13 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 65], | 30.00th=[ 65], 40.00th=[ 65], 50.00th=[ 65], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 148], 90.00th=[ 148], 95.00th=[ 148], | 99.00th=[ 148], 99.50th=[ 148], 99.90th=[ 148], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 1452, max= 2023, per=37.52%, avg=1737.50, stdev=403.76, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2316KiB/s (2371kB/s)(10.0MiB/4422msec); 0 zone resets clat (msec): min=131, max=921, avg=390.47, stdev=259.87 lat (msec): min=131, max=921, avg=390.55, stdev=259.86 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 136], | 30.00th=[ 234], 40.00th=[ 249], 50.00th=[ 255], 60.00th=[ 317], | 70.00th=[ 397], 80.00th=[ 584], 90.00th=[ 693], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 1452, max= 6071, per=38.67%, avg=2507.29, stdev=1585.30, samples=7 iops : min= 1, max= 5, avg= 1.57, stdev= 1.51, samples=7 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=10.27%, ctx=137, 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=144932: Thu Aug 27 12:10:09 2026 read: IOPS=1, BW=1696KiB/s (1737kB/s)(6144KiB/3623msec) clat (usec): min=522, max=343019, avg=180923.38, stdev=147507.37 lat (usec): min=523, max=343020, avg=180924.67, stdev=147507.48 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 4621], | 30.00th=[ 4621], 40.00th=[196084], 50.00th=[196084], 60.00th=[235930], | 70.00th=[304088], 80.00th=[304088], 90.00th=[341836], 95.00th=[341836], | 99.00th=[341836], 99.50th=[341836], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 1928, max= 6071, per=72.14%, avg=3340.67, stdev=2365.02, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1696KiB/s (1737kB/s)(6144KiB/3623msec); 0 zone resets clat (msec): min=182, max=922, avg=368.47, stdev=278.44 lat (msec): min=182, max=922, avg=368.56, stdev=278.44 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 300], | 70.00th=[ 355], 80.00th=[ 355], 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= 1928, max= 3900, per=38.08%, avg=2468.50, stdev=955.38, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 250=41.67%, 500=33.33%, 1000=8.33% cpu : usr=0.03%, sys=11.26%, ctx=233, 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=144933: Thu Aug 27 12:10:09 2026 read: IOPS=1, BW=1177KiB/s (1205kB/s)(5120KiB/4350msec) clat (usec): min=459, max=267059, avg=124900.27, stdev=123170.13 lat (usec): min=459, max=267061, avg=124901.48, stdev=123170.11 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 461], 10.00th=[ 461], 20.00th=[ 461], | 30.00th=[ 1532], 40.00th=[ 1532], 50.00th=[131597], 60.00th=[131597], | 70.00th=[223347], 80.00th=[223347], 90.00th=[267387], 95.00th=[267387], | 99.00th=[267387], 99.50th=[267387], 99.90th=[267387], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1648KiB/s (1687kB/s)(7168KiB/4350msec); 0 zone resets clat (msec): min=298, max=773, avg=485.48, stdev=155.68 lat (msec): min=298, max=773, avg=485.56, stdev=155.68 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 355], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 464], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1928, max= 3946, per=35.81%, avg=2321.50, stdev=797.29, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (usec) : 500=8.33% lat (msec) : 2=8.33%, 250=16.67%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=7.86%, ctx=116, 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=4631KiB/s (4743kB/s), 463KiB/s-1766KiB/s (474kB/s-1808kB/s), io=20.0MiB (20.0MB), run=3623-4422msec WRITE: bw=6484KiB/s (6640kB/s), 1261KiB/s-2316KiB/s (1292kB/s-2371kB/s), io=28.0MiB (29.4MB), run=3623-4422msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144925: Thu Aug 27 12:10:10 2026 read: IOPS=1, BW=1725KiB/s (1766kB/s)(7168KiB/4156msec) clat (msec): min=122, max=318, avg=172.43, stdev=70.65 lat (msec): min=122, max=318, avg=172.44, stdev=70.65 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 129], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 146], 60.00th=[ 153], | 70.00th=[ 153], 80.00th=[ 209], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 2019, max= 4517, per=66.60%, avg=2651.50, stdev=1243.69, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1232KiB/s (1262kB/s)(5120KiB/4156msec); 0 zone resets clat (msec): min=349, max=1131, avg=570.38, stdev=318.03 lat (msec): min=349, max=1131, avg=570.46, stdev=318.04 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 2023, max= 4096, per=48.79%, avg=2719.33, stdev=1192.26, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 250=50.00%, 500=41.67%, 2000=8.33% cpu : usr=0.00%, sys=2.96%, ctx=62, 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=144926: Thu Aug 27 12:10:10 2026 read: IOPS=0, BW=403KiB/s (412kB/s)(2048KiB/5086msec) clat (msec): min=116, max=406, avg=261.37, stdev=205.41 lat (msec): min=116, max=406, avg=261.37, stdev=205.41 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 116], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 116], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 1528, max= 2031, per=44.70%, avg=1779.50, stdev=355.67, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2013KiB/s (2062kB/s)(10.0MiB/5086msec); 0 zone resets clat (msec): min=228, max=1178, avg=454.39, stdev=272.01 lat (msec): min=230, max=1179, avg=454.69, stdev=271.90 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 228], 10.00th=[ 228], 20.00th=[ 292], | 30.00th=[ 296], 40.00th=[ 351], 50.00th=[ 359], 60.00th=[ 388], | 70.00th=[ 401], 80.00th=[ 498], 90.00th=[ 550], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 1528, max= 4079, per=40.31%, avg=2246.57, stdev=828.93, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=16.67%, 500=66.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=3.52%, ctx=89, 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=144928: Thu Aug 27 12:10:10 2026 read: IOPS=1, BW=1251KiB/s (1281kB/s)(6144KiB/4911msec) clat (msec): min=85, max=632, avg=316.09, stdev=241.62 lat (msec): min=85, max=632, avg=316.09, stdev=241.62 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 91], | 30.00th=[ 91], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 414], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 2007, max= 2031, per=50.78%, avg=2021.40, stdev= 9.21, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1251KiB/s (1281kB/s)(6144KiB/4911msec); 0 zone resets clat (msec): min=315, max=727, avg=475.14, stdev=171.94 lat (msec): min=325, max=728, avg=476.87, stdev=170.12 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 502], | 70.00th=[ 625], 80.00th=[ 625], 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= 1477, max= 2039, per=34.43%, avg=1918.60, stdev=247.00, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=8.33%, 500=33.33%, 750=41.67% cpu : usr=0.00%, sys=2.85%, ctx=73, 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=144929: Thu Aug 27 12:10:10 2026 read: IOPS=0, BW=995KiB/s (1019kB/s)(5120KiB/5144msec) clat (msec): min=81, max=1014, avg=343.73, stdev=390.20 lat (msec): min=81, max=1014, avg=343.74, stdev=390.20 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 133], 60.00th=[ 133], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 2031, max= 6107, per=100.00%, avg=4069.00, stdev=2882.17, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1393KiB/s (1427kB/s)(7168KiB/5144msec); 0 zone resets clat (msec): min=141, max=732, avg=461.40, stdev=242.70 lat (msec): min=141, max=732, avg=461.51, stdev=242.71 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 203], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 567], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 693], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1484, max= 2048, per=34.46%, avg=1920.20, stdev=244.35, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=16.67%, 750=33.33%, 2000=8.33% cpu : usr=0.00%, sys=2.84%, ctx=71, 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=3981KiB/s (4077kB/s), 403KiB/s-1725KiB/s (412kB/s-1766kB/s), io=20.0MiB (20.0MB), run=4156-5144msec WRITE: bw=5574KiB/s (5708kB/s), 1232KiB/s-2013KiB/s (1262kB/s-2062kB/s), io=28.0MiB (29.4MB), run=4156-5144msec 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=144940: Thu Aug 27 12:10:23 2026 read: IOPS=1, BW=4101KiB/s (4200kB/s)(12.0MiB/2996msec) clat (msec): min=808, max=1132, avg=986.80, stdev=164.12 lat (msec): min=808, max=1132, avg=986.80, stdev=164.12 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1020], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.03%, sys=11.82%, ctx=321, 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=144941: Thu Aug 27 12:10:23 2026 read: IOPS=0, BW=1195KiB/s (1223kB/s)(4096KiB/3429msec) clat (nsec): min=1205.7M, max=1205.7M, avg=1205731795.00, stdev= 0.00 lat (nsec): min=1205.7M, max=1205.7M, avg=1205734071.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1200], 5.00th=[ 1200], 10.00th=[ 1200], 20.00th=[ 1200], | 30.00th=[ 1200], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2389KiB/s (2446kB/s)(8192KiB/3429msec); 0 zone resets clat (msec): min=420, max=1698, avg=1059.60, stdev=903.27 lat (msec): min=421, max=1698, avg=1060.10, stdev=903.21 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 1703], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8126, max= 8126, per=87.76%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.06%, sys=5.02%, ctx=127, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144942: Thu Aug 27 12:10:23 2026 write: IOPS=0, BW=3472KiB/s (3555kB/s)(12.0MiB/3539msec); 0 zone resets clat (msec): min=720, max=1467, avg=1158.82, stdev=389.87 lat (msec): min=720, max=1467, avg=1160.15, stdev=390.35 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8126, max= 8159, per=87.94%, avg=8142.50, stdev=23.33, 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=0.06%, sys=4.58%, ctx=67, 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=144943: Thu Aug 27 12:10:23 2026 write: IOPS=0, BW=3716KiB/s (3805kB/s)(12.0MiB/3307msec); 0 zone resets clat (msec): min=484, max=2254, avg=1088.07, stdev=1010.71 lat (msec): min=485, max=2255, avg=1088.50, stdev=1010.88 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 2265], 80.00th=[ 2265], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 6638, max= 8062, per=79.38%, avg=7350.00, stdev=1006.92, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.69%, ctx=40, 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=4778KiB/s (4893kB/s), 1195KiB/s-4101KiB/s (1223kB/s-4200kB/s), io=16.0MiB (16.8MB), run=2996-3429msec WRITE: bw=9259KiB/s (9481kB/s), 2389KiB/s-3716KiB/s (2446kB/s-3805kB/s), io=32.0MiB (33.6MB), run=3307-3539msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144945: Thu Aug 27 12:10:24 2026 read: IOPS=0, BW=3611KiB/s (3698kB/s)(12.0MiB/3403msec) clat (msec): min=199, max=1986, avg=1133.96, stdev=896.33 lat (msec): min=199, max=1986, avg=1133.96, stdev=896.33 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 1989], 80.00th=[ 1989], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.50%, ctx=36, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144946: Thu Aug 27 12:10:24 2026 read: IOPS=0, BW=1092KiB/s (1118kB/s)(4096KiB/3750msec) clat (nsec): min=1398.5M, max=1398.5M, avg=1398487476.00, stdev= 0.00 lat (nsec): min=1398.5M, max=1398.5M, avg=1398489427.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1401], 5.00th=[ 1401], 10.00th=[ 1401], 20.00th=[ 1401], | 30.00th=[ 1401], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 1401], | 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= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2185KiB/s (2237kB/s)(8192KiB/3750msec); 0 zone resets clat (msec): min=724, max=1557, avg=1141.06, stdev=589.61 lat (msec): min=725, max=1562, avg=1144.11, stdev=591.73 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=[ 1552], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8110, max= 8110, per=92.81%, 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=0.11%, sys=2.43%, ctx=33, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144947: Thu Aug 27 12:10:24 2026 write: IOPS=0, BW=3293KiB/s (3373kB/s)(12.0MiB/3731msec); 0 zone resets clat (msec): min=279, max=2089, avg=1222.05, stdev=907.60 lat (msec): min=279, max=2090, avg=1222.37, stdev=907.53 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 2089], 80.00th=[ 2089], 90.00th=[ 2089], 95.00th=[ 2089], | 99.00th=[ 2089], 99.50th=[ 2089], 99.90th=[ 2089], 99.95th=[ 2089], | 99.99th=[ 2089] bw ( KiB/s): min= 8110, max= 8159, per=93.09%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.47%, ctx=34, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144948: Thu Aug 27 12:10:24 2026 write: IOPS=0, BW=3820KiB/s (3911kB/s)(12.0MiB/3217msec); 0 zone resets clat (msec): min=617, max=1534, avg=1071.51, stdev=458.11 lat (msec): min=618, max=1534, avg=1071.99, stdev=458.06 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 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= 8126, max= 8159, per=93.18%, avg=8142.50, stdev=23.33, 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=4.38%, ctx=45, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4369KiB/s (4474kB/s), 1092KiB/s-3611KiB/s (1118kB/s-3698kB/s), io=16.0MiB (16.8MB), run=3403-3750msec WRITE: bw=8738KiB/s (8948kB/s), 2185KiB/s-3820KiB/s (2237kB/s-3911kB/s), io=32.0MiB (33.6MB), run=3217-3750msec