== sanity test 398b: DIO and buffer IO race ============== 17:08:10 (1787864890) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.88408 s, 8.6 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=144751: Thu Aug 27 17:10:37 2026 read: IOPS=11, BW=46.0KiB/s (48.1kB/s)(5992KiB/127594msec) clat (usec): min=32, max=944830, avg=41794.43, stdev=41985.77 lat (usec): min=32, max=944832, avg=41797.27, stdev=41985.92 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 60], 10.00th=[ 971], 20.00th=[ 19006], | 30.00th=[ 23725], 40.00th=[ 28705], 50.00th=[ 34341], 60.00th=[ 40633], | 70.00th=[ 50070], 80.00th=[ 60031], 90.00th=[ 78119], 95.00th=[ 99091], | 99.00th=[147850], 99.50th=[208667], 99.90th=[455082], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 7, max= 103, per=24.94%, avg=46.64, stdev=20.32, samples=251 iops : min= 1, max= 25, avg=11.02, stdev= 5.12, samples=251 write: IOPS=12, BW=49.3KiB/s (50.5kB/s)(6296KiB/127594msec); 0 zone resets clat (usec): min=959, max=261628, avg=40962.75, stdev=40802.82 lat (usec): min=959, max=261629, avg=40966.82, stdev=40804.53 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1401], 20.00th=[ 3949], | 30.00th=[ 8848], 40.00th=[ 20579], 50.00th=[ 30540], 60.00th=[ 41681], | 70.00th=[ 55837], 80.00th=[ 70779], 90.00th=[ 95945], 95.00th=[121111], | 99.00th=[173016], 99.50th=[193987], 99.90th=[244319], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 7, max= 111, per=25.30%, avg=49.34, stdev=20.79, samples=249 iops : min= 1, max= 27, avg=11.70, stdev= 5.22, samples=249 lat (usec) : 50=0.46%, 100=4.17%, 250=0.10%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.26% lat (msec) : 2=6.32%, 4=4.00%, 10=6.09%, 20=9.54%, 50=37.34% lat (msec) : 100=24.67%, 250=6.77%, 500=0.20%, 1000=0.03% cpu : usr=0.07%, sys=4.51%, ctx=6319, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144752: Thu Aug 27 17:10:37 2026 read: IOPS=11, BW=46.3KiB/s (47.4kB/s)(5940KiB/128392msec) clat (usec): min=36, max=1054.7k, avg=43050.95, stdev=41747.41 lat (usec): min=36, max=1054.7k, avg=43053.23, stdev=41747.09 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 9896], | 20.00th=[ 19792], 30.00th=[ 24249], 40.00th=[ 29230], | 50.00th=[ 35390], 60.00th=[ 42730], 70.00th=[ 51643], | 80.00th=[ 62129], 90.00th=[ 82314], 95.00th=[ 100140], | 99.00th=[ 154141], 99.50th=[ 183501], 99.90th=[ 304088], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 7, max= 119, per=24.67%, avg=46.13, stdev=19.66, samples=250 iops : min= 1, max= 29, avg=10.89, stdev= 4.95, samples=250 write: IOPS=12, BW=49.4KiB/s (50.6kB/s)(6348KiB/128392msec); 0 zone resets clat (usec): min=729, max=482946, avg=40278.25, stdev=43081.95 lat (usec): min=730, max=482947, avg=40280.96, stdev=43081.39 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1188], 10.00th=[ 1401], 20.00th=[ 3654], | 30.00th=[ 8225], 40.00th=[ 18220], 50.00th=[ 30278], 60.00th=[ 41157], | 70.00th=[ 51119], 80.00th=[ 66847], 90.00th=[ 95945], 95.00th=[120062], | 99.00th=[181404], 99.50th=[208667], 99.90th=[278922], 99.95th=[484443], | 99.99th=[484443] bw ( KiB/s): min= 7, max= 110, per=25.17%, avg=49.08, stdev=21.32, samples=251 iops : min= 1, max= 27, avg=11.63, stdev= 5.37, samples=251 lat (usec) : 50=0.49%, 100=3.52%, 250=0.33%, 500=0.10%, 750=0.10% lat (usec) : 1000=0.39% lat (msec) : 2=6.32%, 4=4.36%, 10=6.05%, 20=9.60%, 50=37.21% lat (msec) : 100=24.41%, 250=6.87%, 500=0.23%, 2000=0.03% cpu : usr=0.06%, sys=4.55%, ctx=6367, 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=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=144755: Thu Aug 27 17:10:37 2026 read: IOPS=11, BW=46.0KiB/s (48.1kB/s)(6028KiB/128279msec) clat (usec): min=35, max=470797, avg=42189.82, stdev=32819.18 lat (usec): min=35, max=470798, avg=42194.10, stdev=32819.22 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 11731], 20.00th=[ 20055], | 30.00th=[ 25035], 40.00th=[ 29754], 50.00th=[ 35390], 60.00th=[ 41681], | 70.00th=[ 50070], 80.00th=[ 60556], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[158335], 99.50th=[170918], 99.90th=[320865], 99.95th=[471860], | 99.99th=[471860] bw ( KiB/s): min= 7, max= 102, per=25.33%, avg=47.36, stdev=19.36, samples=248 iops : min= 1, max= 25, avg=11.21, stdev= 4.90, samples=248 write: IOPS=12, BW=48.8KiB/s (49.0kB/s)(6260KiB/128279msec); 0 zone resets clat (usec): min=821, max=1312.8k, avg=40985.45, stdev=52520.30 lat (usec): min=822, max=1312.9k, avg=40988.32, stdev=52520.32 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1369], | 20.00th=[ 3851], 30.00th=[ 9241], 40.00th=[ 20055], | 50.00th=[ 31065], 60.00th=[ 41157], 70.00th=[ 53216], | 80.00th=[ 68682], 90.00th=[ 89654], 95.00th=[ 113771], | 99.00th=[ 191890], 99.50th=[ 227541], 99.90th=[ 413139], | 99.95th=[1317012], 99.99th=[1317012] bw ( KiB/s): min= 7, max= 125, per=25.25%, avg=49.24, stdev=20.75, samples=248 iops : min= 1, max= 31, avg=11.67, stdev= 5.25, samples=248 lat (usec) : 50=0.46%, 100=3.16%, 250=0.33%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=6.67%, 4=3.65%, 10=5.63%, 20=9.67%, 50=38.61% lat (msec) : 100=25.78%, 250=5.47%, 500=0.23%, 2000=0.03% cpu : usr=0.06%, sys=4.58%, ctx=6423, 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=144756: Thu Aug 27 17:10:37 2026 read: IOPS=11, BW=47.3KiB/s (48.4kB/s)(6052KiB/127928msec) clat (usec): min=35, max=434213, avg=40115.75, stdev=30628.13 lat (usec): min=35, max=434214, avg=40117.46, stdev=30628.12 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 60], 10.00th=[ 1434], 20.00th=[ 18482], | 30.00th=[ 23462], 40.00th=[ 28705], 50.00th=[ 34866], 60.00th=[ 41681], | 70.00th=[ 49021], 80.00th=[ 61604], 90.00th=[ 76022], 95.00th=[ 89654], | 99.00th=[137364], 99.50th=[166724], 99.90th=[256902], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 7, max= 119, per=25.12%, avg=46.97, stdev=20.37, samples=250 iops : min= 1, max= 29, avg=11.10, stdev= 5.12, samples=250 write: IOPS=12, BW=48.7KiB/s (49.9kB/s)(6236KiB/127928msec); 0 zone resets clat (usec): min=744, max=1017.9k, avg=42797.75, stdev=49504.39 lat (usec): min=745, max=1017.9k, avg=42801.26, stdev=49503.40 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1467], | 20.00th=[ 3982], 30.00th=[ 9503], 40.00th=[ 21103], | 50.00th=[ 32375], 60.00th=[ 42730], 70.00th=[ 55837], | 80.00th=[ 72877], 90.00th=[ 96994], 95.00th=[ 124257], | 99.00th=[ 187696], 99.50th=[ 212861], 99.90th=[ 446694], | 99.95th=[1019216], 99.99th=[1019216] bw ( KiB/s): min= 7, max= 143, per=24.83%, avg=48.42, stdev=19.53, samples=250 iops : min= 1, max= 35, avg=11.46, stdev= 4.89, samples=250 lat (usec) : 50=0.59%, 100=3.97%, 250=0.26%, 750=0.03%, 1000=0.16% lat (msec) : 2=6.22%, 4=3.91%, 10=5.86%, 20=10.32%, 50=36.82% lat (msec) : 100=25.49%, 250=6.18%, 500=0.16%, 2000=0.03% cpu : usr=0.08%, sys=4.38%, ctx=6275, 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=187KiB/s (192kB/s), 46.3KiB/s-47.3KiB/s (47.4kB/s-48.4kB/s), io=23.4MiB (24.6MB), run=127594-128392msec WRITE: bw=196KiB/s (201kB/s), 48.7KiB/s-49.4KiB/s (49.9kB/s-50.6kB/s), io=24.6MiB (25.7MB), run=127594-128392msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144749: Thu Aug 27 17:13:07 2026 read: IOPS=5, BW=21.7KiB/s (22.3kB/s)(5992KiB/275702msec) clat (msec): min=4, max=1016, avg=35.93, stdev=42.28 lat (msec): min=4, max=1016, avg=35.93, stdev=42.28 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 50], 90.00th=[ 74], 95.00th=[ 104], | 99.00th=[ 192], 99.50th=[ 228], 99.90th=[ 275], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 88, per=28.45%, avg=24.46, stdev=16.23, samples=473 iops : min= 1, max= 22, avg= 5.49, stdev= 4.09, samples=473 write: IOPS=5, BW=22.8KiB/s (23.4kB/s)(6296KiB/275702msec); 0 zone resets clat (msec): min=31, max=582, avg=140.64, stdev=67.11 lat (msec): min=31, max=582, avg=140.64, stdev=67.11 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 61], 10.00th=[ 70], 20.00th=[ 87], | 30.00th=[ 100], 40.00th=[ 112], 50.00th=[ 127], 60.00th=[ 144], | 70.00th=[ 163], 80.00th=[ 188], 90.00th=[ 226], 95.00th=[ 264], | 99.00th=[ 351], 99.50th=[ 418], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 56, per=25.04%, avg=22.54, stdev=10.06, samples=538 iops : min= 1, max= 14, avg= 5.01, stdev= 2.57, samples=538 lat (msec) : 10=3.87%, 20=16.11%, 50=20.12%, 100=21.71%, 250=34.86% lat (msec) : 500=3.19%, 750=0.10%, 2000=0.03% cpu : usr=0.03%, sys=1.05%, ctx=5051, 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=144750: Thu Aug 27 17:13:07 2026 read: IOPS=5, BW=21.3KiB/s (21.8kB/s)(5940KiB/278369msec) clat (msec): min=5, max=1070, avg=35.10, stdev=42.91 lat (msec): min=5, max=1070, avg=35.11, stdev=42.91 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 73], 95.00th=[ 100], | 99.00th=[ 184], 99.50th=[ 211], 99.90th=[ 363], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 103, per=28.37%, avg=24.40, stdev=17.53, samples=470 iops : min= 1, max= 25, avg= 5.48, stdev= 4.41, samples=470 write: IOPS=5, BW=22.8KiB/s (23.4kB/s)(6348KiB/278369msec); 0 zone resets clat (msec): min=29, max=572, avg=142.24, stdev=70.20 lat (msec): min=29, max=572, avg=142.24, stdev=70.20 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 61], 10.00th=[ 69], 20.00th=[ 84], | 30.00th=[ 100], 40.00th=[ 113], 50.00th=[ 127], 60.00th=[ 146], | 70.00th=[ 165], 80.00th=[ 190], 90.00th=[ 234], 95.00th=[ 275], | 99.00th=[ 388], 99.50th=[ 435], 99.90th=[ 510], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 55, per=24.95%, avg=22.46, stdev=10.45, samples=544 iops : min= 1, max= 13, avg= 4.99, stdev= 2.67, samples=544 lat (msec) : 10=4.13%, 20=16.08%, 50=20.28%, 100=21.71%, 250=33.63% lat (msec) : 500=4.07%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.02%, ctx=5037, 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=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=144753: Thu Aug 27 17:13:07 2026 read: IOPS=5, BW=21.8KiB/s (22.4kB/s)(6028KiB/276102msec) clat (msec): min=5, max=530, avg=36.46, stdev=40.16 lat (msec): min=5, max=530, avg=36.47, stdev=40.16 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 51], 90.00th=[ 78], 95.00th=[ 103], | 99.00th=[ 190], 99.50th=[ 271], 99.90th=[ 477], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 7, max= 120, per=27.98%, avg=24.07, stdev=16.80, samples=483 iops : min= 1, max= 30, avg= 5.39, stdev= 4.25, samples=483 write: IOPS=5, BW=22.7KiB/s (23.2kB/s)(6260KiB/276102msec); 0 zone resets clat (msec): min=28, max=1318, avg=140.98, stdev=72.30 lat (msec): min=28, max=1318, avg=140.99, stdev=72.30 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 62], 10.00th=[ 72], 20.00th=[ 86], | 30.00th=[ 99], 40.00th=[ 112], 50.00th=[ 126], 60.00th=[ 142], | 70.00th=[ 163], 80.00th=[ 188], 90.00th=[ 228], 95.00th=[ 271], | 99.00th=[ 355], 99.50th=[ 376], 99.90th=[ 498], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 55, per=24.97%, avg=22.48, stdev=10.45, samples=535 iops : min= 1, max= 13, avg= 4.99, stdev= 2.66, samples=535 lat (msec) : 10=3.84%, 20=16.28%, 50=20.08%, 100=22.14%, 250=33.76% lat (msec) : 500=3.84%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.03%, ctx=5050, 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=144754: Thu Aug 27 17:13:07 2026 read: IOPS=5, BW=21.0KiB/s (22.5kB/s)(6052KiB/275203msec) clat (msec): min=4, max=518, avg=35.11, stdev=36.46 lat (msec): min=4, max=518, avg=35.12, stdev=36.46 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 73], 95.00th=[ 105], | 99.00th=[ 188], 99.50th=[ 226], 99.90th=[ 313], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 7, max= 112, per=28.70%, avg=24.68, stdev=16.93, samples=474 iops : min= 1, max= 28, avg= 5.55, stdev= 4.28, samples=474 write: IOPS=5, BW=22.7KiB/s (23.2kB/s)(6236KiB/275203msec); 0 zone resets clat (msec): min=37, max=1174, avg=142.12, stdev=70.51 lat (msec): min=37, max=1174, avg=142.12, stdev=70.51 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 62], 10.00th=[ 72], 20.00th=[ 88], | 30.00th=[ 100], 40.00th=[ 113], 50.00th=[ 127], 60.00th=[ 146], | 70.00th=[ 165], 80.00th=[ 194], 90.00th=[ 232], 95.00th=[ 264], | 99.00th=[ 351], 99.50th=[ 388], 99.90th=[ 575], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 63, per=24.75%, avg=22.27, stdev=10.17, samples=539 iops : min= 1, max= 15, avg= 4.94, stdev= 2.60, samples=539 lat (msec) : 10=4.26%, 20=16.96%, 50=19.86%, 100=21.03%, 250=34.41% lat (msec) : 500=3.39%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.00%, ctx=4999, 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=86.3KiB/s (88.3kB/s), 21.3KiB/s-21.0KiB/s (21.8kB/s-22.5kB/s), io=23.4MiB (24.6MB), run=275203-278369msec WRITE: bw=90.3KiB/s (92.5kB/s), 22.7KiB/s-22.8KiB/s (23.2kB/s-23.4kB/s), io=24.6MiB (25.7MB), run=275203-278369msec 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=144816: Thu Aug 27 17:13:52 2026 read: IOPS=11, BW=190KiB/s (195kB/s)(5920KiB/31156msec) clat (usec): min=34, max=272097, avg=43077.19, stdev=38651.14 lat (usec): min=34, max=272098, avg=43079.04, stdev=38651.79 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 127], | 30.00th=[ 23200], 40.00th=[ 30540], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 53740], 80.00th=[ 65274], 90.00th=[ 94897], 95.00th=[112722], | 99.00th=[200279], 99.50th=[252707], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 411, per=27.10%, avg=189.43, stdev=77.79, samples=61 iops : min= 1, max= 25, avg=11.07, stdev= 4.94, samples=61 write: IOPS=12, BW=204KiB/s (209kB/s)(6368KiB/31156msec); 0 zone resets clat (usec): min=1046, max=341229, avg=37996.46, stdev=46466.93 lat (usec): min=1049, max=341230, avg=37998.60, stdev=46467.08 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1647], 10.00th=[ 2008], 20.00th=[ 4490], | 30.00th=[ 7308], 40.00th=[ 12518], 50.00th=[ 20317], 60.00th=[ 30540], | 70.00th=[ 43779], 80.00th=[ 65799], 90.00th=[ 98042], 95.00th=[131597], | 99.00th=[214959], 99.50th=[308282], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 31, max= 349, per=27.85%, avg=204.67, stdev=78.94, samples=61 iops : min= 1, max= 21, avg=12.02, stdev= 5.01, samples=61 lat (usec) : 50=1.30%, 100=8.20%, 250=0.91%, 500=0.26% lat (msec) : 2=5.08%, 4=4.04%, 10=9.51%, 20=9.64%, 50=30.86% lat (msec) : 100=21.74%, 250=7.81%, 500=0.65% cpu : usr=0.05%, sys=4.72%, ctx=1384, 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=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=144818: Thu Aug 27 17:13:52 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(5744KiB/34245msec) clat (usec): min=38, max=329036, avg=48640.74, stdev=47005.36 lat (usec): min=38, max=329038, avg=48649.82, stdev=46997.75 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 206], | 30.00th=[ 21365], 40.00th=[ 31589], 50.00th=[ 38536], 60.00th=[ 49021], | 70.00th=[ 62653], 80.00th=[ 82314], 90.00th=[100140], 95.00th=[139461], | 99.00th=[206570], 99.50th=[248513], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 26, max= 372, per=24.38%, avg=170.39, stdev=81.36, samples=66 iops : min= 1, max= 23, avg= 9.85, stdev= 5.15, samples=66 write: IOPS=11, BW=191KiB/s (196kB/s)(6544KiB/34245msec); 0 zone resets clat (usec): min=1251, max=414272, avg=40295.71, stdev=48775.77 lat (usec): min=1253, max=414274, avg=40303.38, stdev=48772.39 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1680], 10.00th=[ 1942], 20.00th=[ 5014], | 30.00th=[ 8586], 40.00th=[ 13960], 50.00th=[ 22676], 60.00th=[ 34341], | 70.00th=[ 51119], 80.00th=[ 68682], 90.00th=[ 94897], 95.00th=[131597], | 99.00th=[204473], 99.50th=[248513], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 31, max= 572, per=26.37%, avg=193.83, stdev=99.61, samples=66 iops : min= 1, max= 35, avg=11.33, stdev= 6.28, samples=66 lat (usec) : 50=0.52%, 100=8.20%, 250=0.78%, 500=0.26%, 750=0.26% lat (msec) : 2=5.99%, 4=3.78%, 10=8.85%, 20=9.90%, 50=27.08% lat (msec) : 100=24.74%, 250=9.24%, 500=0.39% cpu : usr=0.06%, sys=4.89%, ctx=1416, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144819: Thu Aug 27 17:13:52 2026 read: IOPS=12, BW=193KiB/s (198kB/s)(6256KiB/32429msec) clat (usec): min=39, max=542737, avg=47246.98, stdev=50788.24 lat (usec): min=39, max=542738, avg=47248.89, stdev=50787.96 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 111], | 30.00th=[ 23987], 40.00th=[ 32900], 50.00th=[ 40109], 60.00th=[ 51119], | 70.00th=[ 57410], 80.00th=[ 68682], 90.00th=[ 92799], 95.00th=[116917], | 99.00th=[308282], 99.50th=[341836], 99.90th=[541066], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 31, max= 537, per=28.29%, avg=197.76, stdev=80.80, samples=62 iops : min= 1, max= 33, avg=11.58, stdev= 5.15, samples=62 write: IOPS=11, BW=186KiB/s (190kB/s)(6032KiB/32429msec); 0 zone resets clat (usec): min=981, max=250858, avg=36324.89, stdev=41801.76 lat (usec): min=981, max=250860, avg=36327.34, stdev=41801.36 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1598], 10.00th=[ 1745], 20.00th=[ 3261], | 30.00th=[ 7767], 40.00th=[ 11863], 50.00th=[ 20841], 60.00th=[ 31065], | 70.00th=[ 47449], 80.00th=[ 65274], 90.00th=[ 95945], 95.00th=[120062], | 99.00th=[196084], 99.50th=[208667], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 31, max= 445, per=25.41%, avg=186.74, stdev=98.79, samples=62 iops : min= 1, max= 27, avg=10.89, stdev= 6.26, samples=62 lat (usec) : 50=1.69%, 100=8.46%, 250=0.91%, 500=0.13%, 1000=0.26% lat (msec) : 2=6.64%, 4=5.08%, 10=6.25%, 20=8.46%, 50=27.60% lat (msec) : 100=26.04%, 250=7.81%, 500=0.52%, 750=0.13% cpu : usr=0.06%, sys=4.42%, ctx=1409, 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=144820: Thu Aug 27 17:13:52 2026 read: IOPS=11, BW=188KiB/s (193kB/s)(6032KiB/32054msec) clat (usec): min=35, max=197168, avg=44464.20, stdev=38021.89 lat (usec): min=36, max=197170, avg=44469.76, stdev=38023.95 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 57], 10.00th=[ 61], 20.00th=[ 83], | 30.00th=[ 25560], 40.00th=[ 33424], 50.00th=[ 38536], 60.00th=[ 46924], | 70.00th=[ 57410], 80.00th=[ 69731], 90.00th=[ 92799], 95.00th=[120062], | 99.00th=[173016], 99.50th=[185598], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 416, per=27.36%, avg=191.24, stdev=79.71, samples=62 iops : min= 1, max= 26, avg=11.16, stdev= 5.07, samples=62 write: IOPS=12, BW=195KiB/s (200kB/s)(6256KiB/32054msec); 0 zone resets clat (usec): min=1394, max=337953, avg=38447.25, stdev=50233.02 lat (usec): min=1396, max=337955, avg=38454.05, stdev=50235.25 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1680], 10.00th=[ 2114], 20.00th=[ 4228], | 30.00th=[ 6456], 40.00th=[ 10290], 50.00th=[ 17695], 60.00th=[ 28705], | 70.00th=[ 45351], 80.00th=[ 66323], 90.00th=[ 99091], 95.00th=[139461], | 99.00th=[250610], 99.50th=[316670], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 26, max= 476, per=26.61%, avg=195.62, stdev=98.47, samples=63 iops : min= 1, max= 29, avg=11.44, stdev= 6.25, samples=63 lat (usec) : 50=0.78%, 100=9.77%, 250=0.13%, 500=0.26%, 1000=0.13% lat (msec) : 2=4.82%, 4=4.82%, 10=10.68%, 20=7.55%, 50=28.78% lat (msec) : 100=23.57%, 250=8.20%, 500=0.52% cpu : usr=0.06%, sys=4.62%, ctx=1374, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=699KiB/s (716kB/s), 168KiB/s-193KiB/s (172kB/s-198kB/s), io=23.4MiB (24.5MB), run=31156-34245msec WRITE: bw=736KiB/s (754kB/s), 186KiB/s-204KiB/s (190kB/s-209kB/s), io=24.6MiB (25.8MB), run=31156-34245msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144813: Thu Aug 27 17:14:33 2026 read: IOPS=4, BW=79.2KiB/s (81.1kB/s)(5920KiB/74788msec) clat (msec): min=7, max=320, avg=41.18, stdev=43.79 lat (msec): min=7, max=320, avg=41.18, stdev=43.79 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 54], 90.00th=[ 85], 95.00th=[ 115], | 99.00th=[ 271], 99.50th=[ 296], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 30, max= 285, per=29.23%, avg=92.67, stdev=58.48, samples=124 iops : min= 1, max= 17, avg= 5.04, stdev= 3.67, samples=124 write: IOPS=5, BW=85.1KiB/s (87.2kB/s)(6368KiB/74788msec); 0 zone resets clat (msec): min=30, max=639, avg=149.12, stdev=87.03 lat (msec): min=30, max=639, avg=149.12, stdev=87.03 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 58], 10.00th=[ 69], 20.00th=[ 87], | 30.00th=[ 97], 40.00th=[ 112], 50.00th=[ 129], 60.00th=[ 144], | 70.00th=[ 165], 80.00th=[ 199], 90.00th=[ 253], 95.00th=[ 330], | 99.00th=[ 460], 99.50th=[ 592], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 30, max= 253, per=25.84%, avg=86.29, stdev=43.26, samples=144 iops : min= 1, max= 15, avg= 4.61, stdev= 2.76, samples=144 lat (msec) : 10=1.95%, 20=13.28%, 50=23.96%, 100=21.88%, 250=32.94% lat (msec) : 500=5.73%, 750=0.26% cpu : usr=0.04%, sys=1.09%, ctx=1312, 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=144814: Thu Aug 27 17:14:33 2026 read: IOPS=4, BW=76.2KiB/s (77.0kB/s)(5744KiB/75409msec) clat (msec): min=6, max=440, avg=42.45, stdev=48.33 lat (msec): min=6, max=440, avg=42.45, stdev=48.33 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 54], 90.00th=[ 94], 95.00th=[ 136], | 99.00th=[ 249], 99.50th=[ 259], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 26, max= 352, per=29.55%, avg=93.69, stdev=62.83, samples=121 iops : min= 1, max= 22, avg= 5.09, stdev= 3.99, samples=121 write: IOPS=5, BW=86.8KiB/s (88.9kB/s)(6544KiB/75409msec); 0 zone resets clat (msec): min=44, max=620, avg=146.97, stdev=79.21 lat (msec): min=44, max=620, avg=146.97, stdev=79.21 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 71], 20.00th=[ 86], | 30.00th=[ 101], 40.00th=[ 115], 50.00th=[ 130], 60.00th=[ 146], | 70.00th=[ 165], 80.00th=[ 194], 90.00th=[ 249], 95.00th=[ 300], | 99.00th=[ 405], 99.50th=[ 518], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 30, max= 223, per=26.55%, avg=88.68, stdev=44.98, samples=145 iops : min= 1, max= 13, avg= 4.77, stdev= 2.89, samples=145 lat (msec) : 10=2.34%, 20=14.32%, 50=20.83%, 100=20.57%, 250=36.33% lat (msec) : 500=5.21%, 750=0.39% cpu : usr=0.03%, sys=1.06%, ctx=1316, 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=144815: Thu Aug 27 17:14:33 2026 read: IOPS=5, BW=86.9KiB/s (89.0kB/s)(6256KiB/71974msec) clat (msec): min=7, max=321, avg=39.83, stdev=41.51 lat (msec): min=7, max=321, avg=39.83, stdev=41.51 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 55], 90.00th=[ 83], 95.00th=[ 115], | 99.00th=[ 220], 99.50th=[ 300], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 26, max= 411, per=31.42%, avg=99.60, stdev=70.22, samples=124 iops : min= 1, max= 25, avg= 5.46, stdev= 4.48, samples=124 write: IOPS=5, BW=83.8KiB/s (85.8kB/s)(6032KiB/71974msec); 0 zone resets clat (msec): min=41, max=505, avg=149.00, stdev=81.86 lat (msec): min=41, max=505, avg=149.00, stdev=81.86 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 59], 10.00th=[ 70], 20.00th=[ 87], | 30.00th=[ 100], 40.00th=[ 113], 50.00th=[ 134], 60.00th=[ 148], | 70.00th=[ 165], 80.00th=[ 194], 90.00th=[ 266], 95.00th=[ 338], | 99.00th=[ 430], 99.50th=[ 456], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 30, max= 223, per=25.45%, avg=85.00, stdev=42.30, samples=139 iops : min= 1, max= 13, avg= 4.53, stdev= 2.73, samples=139 lat (msec) : 10=2.47%, 20=16.02%, 50=21.61%, 100=22.40%, 250=32.03% lat (msec) : 500=5.34%, 750=0.13% cpu : usr=0.04%, sys=1.18%, ctx=1358, 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=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=144817: Thu Aug 27 17:14:33 2026 read: IOPS=5, BW=81.6KiB/s (83.6kB/s)(6032KiB/73901msec) clat (msec): min=6, max=254, avg=41.13, stdev=41.39 lat (msec): min=6, max=254, avg=41.15, stdev=41.38 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 58], 90.00th=[ 94], 95.00th=[ 128], | 99.00th=[ 232], 99.50th=[ 253], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 30, max= 287, per=32.03%, avg=101.52, stdev=58.57, samples=117 iops : min= 1, max= 17, avg= 5.57, stdev= 3.67, samples=117 write: IOPS=5, BW=84.7KiB/s (86.7kB/s)(6256KiB/73901msec); 0 zone resets clat (msec): min=40, max=587, avg=148.83, stdev=81.75 lat (msec): min=40, max=587, avg=148.83, stdev=81.75 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 90], | 30.00th=[ 100], 40.00th=[ 112], 50.00th=[ 127], 60.00th=[ 142], | 70.00th=[ 167], 80.00th=[ 197], 90.00th=[ 255], 95.00th=[ 317], | 99.00th=[ 456], 99.50th=[ 584], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 30, max= 224, per=25.82%, avg=86.22, stdev=41.83, samples=143 iops : min= 1, max= 14, avg= 4.61, stdev= 2.72, samples=143 lat (msec) : 10=2.47%, 20=16.02%, 50=19.53%, 100=22.53%, 250=33.46% lat (msec) : 500=5.73%, 750=0.26% cpu : usr=0.04%, sys=1.22%, ctx=1398, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=318KiB/s (325kB/s), 76.2KiB/s-86.9KiB/s (77.0kB/s-89.0kB/s), io=23.4MiB (24.5MB), run=71974-75409msec WRITE: bw=334KiB/s (342kB/s), 83.8KiB/s-86.8KiB/s (85.8kB/s-88.9kB/s), io=24.6MiB (25.8MB), run=71974-75409msec 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=144845: Thu Aug 27 17:14:51 2026 read: IOPS=1, BW=1973KiB/s (2020kB/s)(7168KiB/3633msec) clat (usec): min=477, max=436635, avg=214087.29, stdev=131140.69 lat (usec): min=478, max=436637, avg=214088.71, stdev=131140.80 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[147850], | 30.00th=[198181], 40.00th=[198181], 50.00th=[206570], 60.00th=[248513], | 70.00th=[248513], 80.00th=[261096], 90.00th=[438305], 95.00th=[438305], | 99.00th=[438305], 99.50th=[438305], 99.90th=[438305], 99.95th=[438305], | 99.99th=[438305] bw ( KiB/s): min= 3771, max= 6059, per=100.00%, avg=4915.00, stdev=1617.86, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1409KiB/s (1443kB/s)(5120KiB/3633msec); 0 zone resets clat (msec): min=159, max=713, avg=355.76, stdev=214.75 lat (msec): min=159, max=713, avg=356.38, stdev=214.68 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 330], 60.00th=[ 330], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1885, max= 3893, per=50.96%, avg=2554.33, stdev=1159.32, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=50.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=12.06%, ctx=269, 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=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=144846: Thu Aug 27 17:14:51 2026 read: IOPS=0, BW=358KiB/s (367kB/s)(2048KiB/5720msec) clat (msec): min=252, max=331, avg=292.07, stdev=55.42 lat (msec): min=252, max=331, avg=292.07, stdev=55.42 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 253], 10.00th=[ 253], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 253], 50.00th=[ 253], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 1698, max= 2011, per=51.80%, avg=1854.50, stdev=221.32, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1790KiB/s (1833kB/s)(10.0MiB/5720msec); 0 zone resets clat (msec): min=104, max=1260, avg=494.51, stdev=338.60 lat (msec): min=104, max=1261, avg=494.74, stdev=338.70 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 118], | 30.00th=[ 262], 40.00th=[ 363], 50.00th=[ 439], 60.00th=[ 493], | 70.00th=[ 531], 80.00th=[ 684], 90.00th=[ 693], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 1973, max= 5657, per=59.23%, avg=2968.50, stdev=1558.37, samples=6 iops : min= 1, max= 5, avg= 2.17, stdev= 1.83, samples=6 lat (msec) : 250=16.67%, 500=50.00%, 750=25.00%, 2000=8.33% cpu : usr=0.02%, sys=9.67%, ctx=151, 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=144847: Thu Aug 27 17:14:51 2026 read: IOPS=1, BW=1204KiB/s (1233kB/s)(6144KiB/5104msec) clat (usec): min=1219, max=727061, avg=253479.74, stdev=285882.23 lat (usec): min=1220, max=727062, avg=253480.83, stdev=285881.92 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1221], 10.00th=[ 1221], 20.00th=[ 2180], | 30.00th=[ 2180], 40.00th=[158335], 50.00th=[158335], 60.00th=[173016], | 70.00th=[459277], 80.00th=[459277], 90.00th=[725615], 95.00th=[725615], | 99.00th=[725615], 99.50th=[725615], 99.90th=[725615], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 1885, max= 4079, per=69.02%, avg=2470.75, stdev=1072.80, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1204KiB/s (1233kB/s)(6144KiB/5104msec); 0 zone resets clat (msec): min=175, max=1344, avg=542.19, stdev=438.11 lat (msec): min=175, max=1344, avg=542.27, stdev=438.12 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 481], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 1780, max= 2039, per=39.09%, avg=1959.00, stdev=105.96, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 2=8.33%, 4=8.33%, 250=33.33%, 500=25.00%, 750=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=8.27%, ctx=136, 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=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=144848: Thu Aug 27 17:14:51 2026 read: IOPS=1, BW=1304KiB/s (1336kB/s)(5120KiB/3925msec) clat (usec): min=575, max=424287, avg=167996.26, stdev=209581.79 lat (usec): min=576, max=424288, avg=167997.73, stdev=209581.51 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 578], 10.00th=[ 578], 20.00th=[ 578], | 30.00th=[ 1029], 40.00th=[ 1029], 50.00th=[ 47449], 60.00th=[ 47449], | 70.00th=[367002], 80.00th=[367002], 90.00th=[425722], 95.00th=[425722], | 99.00th=[425722], 99.50th=[425722], 99.90th=[425722], 99.95th=[425722], | 99.99th=[425722] bw ( KiB/s): min= 1946, max= 3771, per=72.18%, avg=2584.00, stdev=1028.93, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1826KiB/s (1870kB/s)(7168KiB/3925msec); 0 zone resets clat (msec): min=117, max=778, avg=420.98, stdev=249.39 lat (msec): min=119, max=778, avg=421.29, stdev=249.14 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 192], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 368], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 625], 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= 1585, max= 4023, per=56.93%, avg=2853.50, stdev=1223.19, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 50=8.33%, 250=16.67%, 500=33.33%, 750=16.67% lat (msec) : 1000=8.33% cpu : usr=0.05%, sys=9.99%, ctx=135, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3580KiB/s (3666kB/s), 358KiB/s-1973KiB/s (367kB/s-2020kB/s), io=20.0MiB (20.0MB), run=3633-5720msec WRITE: bw=5013KiB/s (5133kB/s), 1204KiB/s-1826KiB/s (1233kB/s-1870kB/s), io=28.0MiB (29.4MB), run=3633-5720msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144841: Thu Aug 27 17:14:51 2026 read: IOPS=1, BW=1866KiB/s (1911kB/s)(7168KiB/3841msec) clat (msec): min=79, max=552, avg=227.70, stdev=169.65 lat (msec): min=79, max=557, avg=228.30, stdev=170.98 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 120], | 30.00th=[ 122], 40.00th=[ 122], 50.00th=[ 129], 60.00th=[ 264], | 70.00th=[ 264], 80.00th=[ 330], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1969, max= 4071, per=81.84%, avg=2921.75, stdev=1084.65, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1333KiB/s (1365kB/s)(5120KiB/3841msec); 0 zone resets clat (msec): min=232, max=552, avg=404.77, stdev=127.63 lat (msec): min=232, max=552, avg=404.87, stdev=127.63 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 232], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 2023, max= 4023, per=50.66%, avg=2532.00, stdev=994.04, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=25.00% cpu : usr=0.00%, sys=4.35%, ctx=91, 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=144842: Thu Aug 27 17:14:51 2026 read: IOPS=0, BW=357KiB/s (366kB/s)(2048KiB/5736msec) clat (msec): min=155, max=258, avg=206.99, stdev=73.27 lat (msec): min=155, max=258, avg=206.99, stdev=73.27 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 155], 60.00th=[ 259], | 70.00th=[ 259], 80.00th=[ 259], 90.00th=[ 259], 95.00th=[ 259], | 99.00th=[ 259], 99.50th=[ 259], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 1635, max= 2043, per=51.51%, avg=1839.00, stdev=288.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1785KiB/s (1828kB/s)(10.0MiB/5736msec); 0 zone resets clat (msec): min=213, max=1216, avg=522.70, stdev=295.99 lat (msec): min=213, max=1216, avg=522.79, stdev=295.98 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 275], 40.00th=[ 456], 50.00th=[ 493], 60.00th=[ 506], | 70.00th=[ 535], 80.00th=[ 592], 90.00th=[ 735], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 1635, max= 4047, per=44.38%, avg=2218.00, stdev=751.09, samples=8 iops : min= 1, max= 3, avg= 1.38, stdev= 0.74, samples=8 lat (msec) : 250=25.00%, 500=33.33%, 750=33.33%, 2000=8.33% cpu : usr=0.02%, sys=3.24%, ctx=76, 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=144843: Thu Aug 27 17:14:51 2026 read: IOPS=1, BW=1281KiB/s (1312kB/s)(6144KiB/4795msec) clat (msec): min=56, max=614, avg=285.91, stdev=210.90 lat (msec): min=56, max=614, avg=285.91, stdev=210.90 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 188], 50.00th=[ 188], 60.00th=[ 264], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 1969, max= 4023, per=70.61%, avg=2520.75, stdev=1002.15, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1281KiB/s (1312kB/s)(6144KiB/4795msec); 0 zone resets clat (msec): min=215, max=874, avg=477.23, stdev=229.10 lat (msec): min=215, max=875, avg=477.55, stdev=229.54 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 510], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1756, max= 2048, per=39.68%, avg=1983.33, stdev=112.14, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=3.27%, ctx=74, 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=144844: Thu Aug 27 17:14:51 2026 read: IOPS=0, BW=924KiB/s (946kB/s)(5120KiB/5544msec) clat (msec): min=83, max=564, avg=243.84, stdev=192.35 lat (msec): min=83, max=564, avg=243.84, stdev=192.35 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 84], | 30.00th=[ 109], 40.00th=[ 109], 50.00th=[ 218], 60.00th=[ 218], | 70.00th=[ 247], 80.00th=[ 247], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 2043, max= 4047, per=75.99%, avg=2712.67, stdev=1155.57, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1293KiB/s (1324kB/s)(7168KiB/5544msec); 0 zone resets clat (msec): min=224, max=1050, avg=570.29, stdev=298.99 lat (msec): min=224, max=1050, avg=570.53, stdev=298.92 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 372], | 30.00th=[ 439], 40.00th=[ 439], 50.00th=[ 464], 60.00th=[ 531], | 70.00th=[ 531], 80.00th=[ 911], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 1969, max= 2043, per=40.10%, avg=2004.40, stdev=31.38, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=4.01%, ctx=114, 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=3570KiB/s (3656kB/s), 357KiB/s-1866KiB/s (366kB/s-1911kB/s), io=20.0MiB (20.0MB), run=3841-5736msec WRITE: bw=4999KiB/s (5119kB/s), 1281KiB/s-1785KiB/s (1312kB/s-1828kB/s), io=28.0MiB (29.4MB), run=3841-5736msec 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=144856: Thu Aug 27 17:15:09 2026 read: IOPS=0, BW=2764KiB/s (2831kB/s)(12.0MiB/4445msec) clat (msec): min=895, max=1766, avg=1444.78, stdev=477.91 lat (msec): min=895, max=1766, avg=1444.78, stdev=477.91 clat percentiles (msec): | 1.00th=[ 894], 5.00th=[ 894], 10.00th=[ 894], 20.00th=[ 894], | 30.00th=[ 894], 40.00th=[ 1670], 50.00th=[ 1670], 60.00th=[ 1670], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7892, max= 8143, per=100.00%, avg=8017.50, stdev=177.48, 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=0.00%, sys=2.25%, ctx=49, 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=144857: Thu Aug 27 17:15:09 2026 read: IOPS=0, BW=727KiB/s (745kB/s)(4096KiB/5631msec) clat (nsec): min=2561.0M, max=2561.0M, avg=2561993527.00, stdev= 0.00 lat (nsec): min=2561.0M, max=2561.0M, avg=2561996904.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2567], 5.00th=[ 2567], 10.00th=[ 2567], 20.00th=[ 2567], | 30.00th=[ 2567], 40.00th=[ 2567], 50.00th=[ 2567], 60.00th=[ 2567], | 70.00th=[ 2567], 80.00th=[ 2567], 90.00th=[ 2567], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1455KiB/s (1490kB/s)(8192KiB/5631msec); 0 zone resets clat (msec): min=1211, max=1475, avg=1343.30, stdev=186.70 lat (msec): min=1211, max=1476, avg=1344.22, stdev=187.67 clat percentiles (msec): | 1.00th=[ 1217], 5.00th=[ 1217], 10.00th=[ 1217], 20.00th=[ 1217], | 30.00th=[ 1217], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1469], | 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= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.05%, sys=2.24%, ctx=37, 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=144859: Thu Aug 27 17:15:09 2026 write: IOPS=0, BW=2314KiB/s (2369kB/s)(12.0MiB/5311msec); 0 zone resets clat (msec): min=989, max=2341, avg=1671.91, stdev=676.20 lat (msec): min=989, max=2341, avg=1673.13, stdev=676.24 clat percentiles (msec): | 1.00th=[ 986], 5.00th=[ 986], 10.00th=[ 986], 20.00th=[ 986], | 30.00th=[ 986], 40.00th=[ 1687], 50.00th=[ 1687], 60.00th=[ 1687], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7846, max= 8143, per=100.00%, avg=7994.50, stdev=210.01, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.52%, ctx=69, 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=144861: Thu Aug 27 17:15:09 2026 write: IOPS=0, BW=2890KiB/s (2959kB/s)(12.0MiB/4252msec); 0 zone resets clat (msec): min=654, max=2140, avg=1339.36, stdev=749.65 lat (msec): min=655, max=2140, avg=1339.79, stdev=749.65 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 2140], 80.00th=[ 2140], 90.00th=[ 2140], 95.00th=[ 2140], | 99.00th=[ 2140], 99.50th=[ 2140], 99.90th=[ 2140], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 7846, max= 8078, per=100.00%, avg=7962.00, stdev=164.05, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.09%, sys=3.15%, ctx=64, 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=2910KiB/s (2979kB/s), 727KiB/s-2764KiB/s (745kB/s-2831kB/s), io=16.0MiB (16.8MB), run=4445-5631msec WRITE: bw=5819KiB/s (5959kB/s), 1455KiB/s-2890KiB/s (1490kB/s-2959kB/s), io=32.0MiB (33.6MB), run=4252-5631msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144858: Thu Aug 27 17:15:09 2026 read: IOPS=0, BW=3380KiB/s (3461kB/s)(12.0MiB/3636msec) clat (msec): min=957, max=1578, avg=1202.46, stdev=330.25 lat (msec): min=957, max=1578, avg=1202.46, stdev=330.25 clat percentiles (msec): | 1.00th=[ 961], 5.00th=[ 961], 10.00th=[ 961], 20.00th=[ 961], | 30.00th=[ 961], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 1070], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 8047, max= 8078, per=100.00%, avg=8062.50, stdev=21.92, 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=0.00%, sys=9.71%, ctx=407, 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=144860: Thu Aug 27 17:15:09 2026 read: IOPS=0, BW=741KiB/s (759kB/s)(4096KiB/5527msec) clat (nsec): min=546296k, max=546296k, avg=546296080.00, stdev= 0.00 lat (nsec): min=546298k, max=546298k, avg=546298365.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1482KiB/s (1518kB/s)(8192KiB/5527msec); 0 zone resets clat (msec): min=693, max=4071, avg=2382.52, stdev=2388.74 lat (msec): min=694, max=4072, avg=2383.17, stdev=2388.72 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 4077], | 70.00th=[ 4077], 80.00th=[ 4077], 90.00th=[ 4077], 95.00th=[ 4077], | 99.00th=[ 4077], 99.50th=[ 4077], 99.90th=[ 4077], 99.95th=[ 4077], | 99.99th=[ 4077] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.20%, ctx=136, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144862: Thu Aug 27 17:15:09 2026 write: IOPS=0, BW=2354KiB/s (2411kB/s)(12.0MiB/5219msec); 0 zone resets clat (msec): min=267, max=3223, avg=1702.51, stdev=1480.00 lat (msec): min=267, max=3224, avg=1702.96, stdev=1480.00 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 1620], 50.00th=[ 1620], 60.00th=[ 1620], | 70.00th=[ 3239], 80.00th=[ 3239], 90.00th=[ 3239], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, 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=2.18%, ctx=36, 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=144863: Thu Aug 27 17:15:09 2026 write: IOPS=0, BW=2642KiB/s (2705kB/s)(12.0MiB/4651msec); 0 zone resets clat (msec): min=307, max=2327, avg=1466.22, stdev=1042.44 lat (msec): min=307, max=2328, avg=1466.66, stdev=1042.52 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 1770], 50.00th=[ 1770], 60.00th=[ 1770], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 8078, max= 8159, per=100.00%, avg=8118.50, stdev=57.28, 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=2.19%, ctx=56, 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=2964KiB/s (3036kB/s), 741KiB/s-3380KiB/s (759kB/s-3461kB/s), io=16.0MiB (16.8MB), run=3636-5527msec WRITE: bw=5929KiB/s (6071kB/s), 1482KiB/s-2642KiB/s (1518kB/s-2705kB/s), io=32.0MiB (33.6MB), run=4651-5527msec