== sanity test 398b: DIO and buffer IO race ============== 11:11:53 (1787584313) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.95263 s, 5.6 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=144874: Mon Aug 24 11:14:14 2026 read: IOPS=12, BW=50.6KiB/s (51.8kB/s)(5992KiB/118349msec) clat (usec): min=32, max=712921, avg=39181.25, stdev=35627.76 lat (usec): min=32, max=712923, avg=39184.67, stdev=35628.39 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 59], 10.00th=[ 88], 20.00th=[ 16188], | 30.00th=[ 21103], 40.00th=[ 25822], 50.00th=[ 31851], 60.00th=[ 39060], | 70.00th=[ 48497], 80.00th=[ 60556], 90.00th=[ 80217], 95.00th=[ 94897], | 99.00th=[135267], 99.50th=[145753], 99.90th=[362808], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 128, per=25.08%, avg=50.66, stdev=21.59, samples=232 iops : min= 1, max= 32, avg=12.00, stdev= 5.43, samples=232 write: IOPS=13, BW=53.2KiB/s (54.5kB/s)(6296KiB/118349msec); 0 zone resets clat (usec): min=951, max=294736, avg=37799.31, stdev=40034.46 lat (usec): min=952, max=294738, avg=37801.60, stdev=40034.01 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1172], 10.00th=[ 1516], 20.00th=[ 3785], | 30.00th=[ 7898], 40.00th=[ 17957], 50.00th=[ 27657], 60.00th=[ 36963], | 70.00th=[ 49546], 80.00th=[ 64226], 90.00th=[ 89654], 95.00th=[113771], | 99.00th=[187696], 99.50th=[208667], 99.90th=[261096], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 127, per=24.97%, avg=52.93, stdev=22.59, samples=233 iops : min= 1, max= 31, avg=12.59, stdev= 5.70, samples=233 lat (usec) : 50=0.78%, 100=4.39%, 250=0.33%, 500=0.29%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=6.80%, 4=4.17%, 10=6.32%, 20=12.11%, 50=35.29% lat (msec) : 100=23.47%, 250=5.70%, 500=0.13%, 750=0.03% cpu : usr=0.06%, sys=5.34%, ctx=6503, 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=144875: Mon Aug 24 11:14:14 2026 read: IOPS=12, BW=50.3KiB/s (51.5kB/s)(5940KiB/118053msec) clat (usec): min=26, max=564064, avg=38342.35, stdev=33937.52 lat (usec): min=26, max=564067, avg=38344.21, stdev=33937.41 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 58], 10.00th=[ 68], 20.00th=[ 16188], | 30.00th=[ 21365], 40.00th=[ 26084], 50.00th=[ 31589], 60.00th=[ 38536], | 70.00th=[ 46924], 80.00th=[ 57410], 90.00th=[ 73925], 95.00th=[ 94897], | 99.00th=[139461], 99.50th=[160433], 99.90th=[350225], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 5, max= 126, per=24.76%, avg=50.01, stdev=22.26, samples=232 iops : min= 1, max= 31, avg=11.85, stdev= 5.58, samples=232 write: IOPS=13, BW=53.8KiB/s (55.1kB/s)(6348KiB/118053msec); 0 zone resets clat (usec): min=983, max=280293, avg=38411.60, stdev=39614.56 lat (usec): min=984, max=280295, avg=38416.67, stdev=39613.44 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1631], 20.00th=[ 3687], | 30.00th=[ 7242], 40.00th=[ 16581], 50.00th=[ 28705], 60.00th=[ 38536], | 70.00th=[ 50070], 80.00th=[ 67634], 90.00th=[ 92799], 95.00th=[117965], | 99.00th=[168821], 99.50th=[202376], 99.90th=[242222], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 119, per=25.17%, avg=53.37, stdev=21.73, samples=232 iops : min= 1, max= 29, avg=12.69, stdev= 5.47, samples=232 lat (usec) : 50=0.78%, 100=4.72%, 250=0.23%, 500=0.20%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=6.54%, 4=4.46%, 10=7.55%, 20=10.45%, 50=36.30% lat (msec) : 100=22.59%, 250=5.89%, 500=0.07%, 750=0.03% cpu : usr=0.07%, sys=5.25%, ctx=6442, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144876: Mon Aug 24 11:14:14 2026 read: IOPS=12, BW=50.9KiB/s (52.2kB/s)(6028KiB/118322msec) clat (usec): min=27, max=654480, avg=37363.22, stdev=32720.40 lat (usec): min=28, max=654481, avg=37366.92, stdev=32719.85 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 85], 20.00th=[ 16057], | 30.00th=[ 21627], 40.00th=[ 26084], 50.00th=[ 30802], 60.00th=[ 36963], | 70.00th=[ 44303], 80.00th=[ 56886], 90.00th=[ 74974], 95.00th=[ 89654], | 99.00th=[139461], 99.50th=[162530], 99.90th=[208667], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 15, max= 119, per=25.36%, avg=51.22, stdev=21.04, samples=229 iops : min= 3, max= 29, avg=12.15, stdev= 5.28, samples=229 write: IOPS=13, BW=52.9KiB/s (54.2kB/s)(6260KiB/118322msec); 0 zone resets clat (usec): min=910, max=787014, avg=39541.57, stdev=44292.31 lat (usec): min=911, max=787017, avg=39544.38, stdev=44291.63 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1205], 10.00th=[ 1582], 20.00th=[ 4047], | 30.00th=[ 8455], 40.00th=[ 19792], 50.00th=[ 29230], 60.00th=[ 40109], | 70.00th=[ 52691], 80.00th=[ 67634], 90.00th=[ 92799], 95.00th=[114820], | 99.00th=[164627], 99.50th=[187696], 99.90th=[557843], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 7, max= 111, per=24.87%, avg=52.73, stdev=19.54, samples=231 iops : min= 1, max= 27, avg=12.53, stdev= 4.91, samples=231 lat (usec) : 50=0.81%, 100=4.56%, 250=0.26%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=6.02%, 4=4.10%, 10=6.41%, 20=11.17%, 50=38.09% lat (msec) : 100=23.01%, 250=5.21%, 750=0.07%, 1000=0.03% cpu : usr=0.08%, sys=5.34%, ctx=6559, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144877: Mon Aug 24 11:14:14 2026 read: IOPS=12, BW=51.6KiB/s (52.8kB/s)(6052KiB/117392msec) clat (usec): min=33, max=260836, avg=37739.24, stdev=30164.50 lat (usec): min=34, max=260837, avg=37744.35, stdev=30166.25 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 57], 10.00th=[ 69], 20.00th=[ 15926], | 30.00th=[ 20841], 40.00th=[ 26084], 50.00th=[ 32637], 60.00th=[ 39060], | 70.00th=[ 46924], 80.00th=[ 57934], 90.00th=[ 72877], 95.00th=[ 92799], | 99.00th=[129500], 99.50th=[177210], 99.90th=[244319], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 15, max= 118, per=25.74%, avg=52.00, stdev=21.44, samples=228 iops : min= 3, max= 29, avg=12.35, stdev= 5.38, samples=228 write: IOPS=13, BW=53.1KiB/s (54.4kB/s)(6236KiB/117392msec); 0 zone resets clat (usec): min=959, max=780123, avg=38563.72, stdev=44758.14 lat (usec): min=960, max=780125, avg=38565.78, stdev=44757.72 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1516], 20.00th=[ 3818], | 30.00th=[ 7373], 40.00th=[ 17433], 50.00th=[ 28181], 60.00th=[ 37487], | 70.00th=[ 50594], 80.00th=[ 65799], 90.00th=[ 90702], 95.00th=[114820], | 99.00th=[164627], 99.50th=[219153], 99.90th=[434111], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 7, max= 117, per=24.91%, avg=52.81, stdev=22.26, samples=231 iops : min= 1, max= 29, avg=12.57, stdev= 5.60, samples=231 lat (usec) : 50=0.98%, 100=4.82%, 250=0.65%, 500=0.10%, 1000=0.03% lat (msec) : 2=6.64%, 4=3.91%, 10=6.74%, 20=11.26%, 50=35.74% lat (msec) : 100=23.63%, 250=5.31%, 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=5.23%, ctx=6415, 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=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=203KiB/s (208kB/s), 50.3KiB/s-51.6KiB/s (51.5kB/s-52.8kB/s), io=23.4MiB (24.6MB), run=117392-118349msec WRITE: bw=212KiB/s (218kB/s), 52.9KiB/s-53.8KiB/s (54.2kB/s-55.1kB/s), io=24.6MiB (25.7MB), run=117392-118349msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144869: Mon Aug 24 11:16:09 2026 read: IOPS=6, BW=25.7KiB/s (26.3kB/s)(5992KiB/232869msec) clat (msec): min=4, max=795, avg=31.29, stdev=39.10 lat (msec): min=4, max=795, avg=31.30, stdev=39.11 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 29], 80.00th=[ 43], 90.00th=[ 74], 95.00th=[ 99], | 99.00th=[ 153], 99.50th=[ 203], 99.90th=[ 355], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 95, per=27.06%, avg=27.60, stdev=18.74, samples=421 iops : min= 1, max= 23, avg= 6.29, stdev= 4.73, samples=421 write: IOPS=6, BW=27.0KiB/s (27.7kB/s)(6296KiB/232869msec); 0 zone resets clat (msec): min=32, max=640, avg=117.97, stdev=57.29 lat (msec): min=32, max=640, avg=117.98, stdev=57.29 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 54], 10.00th=[ 62], 20.00th=[ 73], | 30.00th=[ 85], 40.00th=[ 94], 50.00th=[ 106], 60.00th=[ 117], | 70.00th=[ 134], 80.00th=[ 155], 90.00th=[ 192], 95.00th=[ 220], | 99.00th=[ 309], 99.50th=[ 355], 99.90th=[ 609], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 7, max= 55, per=25.14%, avg=26.90, stdev=12.21, samples=453 iops : min= 1, max= 13, avg= 6.11, stdev= 3.12, samples=453 lat (msec) : 10=6.80%, 20=20.05%, 50=15.17%, 100=27.93%, 250=28.32% lat (msec) : 500=1.63%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.15%, ctx=5149, 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=144870: Mon Aug 24 11:16:09 2026 read: IOPS=6, BW=25.4KiB/s (26.0kB/s)(5940KiB/233614msec) clat (msec): min=5, max=670, avg=30.24, stdev=36.67 lat (msec): min=5, max=670, avg=30.25, stdev=36.67 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 40], 90.00th=[ 66], 95.00th=[ 89], | 99.00th=[ 161], 99.50th=[ 224], 99.90th=[ 376], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 119, per=27.65%, avg=28.20, stdev=19.09, samples=409 iops : min= 1, max= 29, avg= 6.44, stdev= 4.82, samples=409 write: IOPS=6, BW=27.2KiB/s (27.8kB/s)(6348KiB/233614msec); 0 zone resets clat (msec): min=37, max=679, avg=118.71, stdev=59.12 lat (msec): min=37, max=679, avg=118.71, stdev=59.12 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 73], | 30.00th=[ 83], 40.00th=[ 92], 50.00th=[ 104], 60.00th=[ 116], | 70.00th=[ 134], 80.00th=[ 159], 90.00th=[ 199], 95.00th=[ 232], | 99.00th=[ 305], 99.50th=[ 330], 99.90th=[ 535], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 55, per=25.10%, avg=26.86, stdev=12.23, samples=458 iops : min= 1, max= 13, avg= 6.10, stdev= 3.13, samples=458 lat (msec) : 10=6.61%, 20=19.99%, 50=15.36%, 100=28.87%, 250=27.25% lat (msec) : 500=1.82%, 750=0.10% cpu : usr=0.04%, sys=1.19%, ctx=5099, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144871: Mon Aug 24 11:16:09 2026 read: IOPS=6, BW=25.8KiB/s (26.4kB/s)(6028KiB/233794msec) clat (msec): min=4, max=448, avg=32.23, stdev=36.49 lat (msec): min=4, max=448, avg=32.23, stdev=36.49 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 47], 90.00th=[ 75], 95.00th=[ 96], | 99.00th=[ 165], 99.50th=[ 220], 99.90th=[ 368], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 112, per=26.52%, avg=27.05, stdev=19.41, samples=432 iops : min= 1, max= 28, avg= 6.15, stdev= 4.89, samples=432 write: IOPS=6, BW=26.8KiB/s (27.4kB/s)(6260KiB/233794msec); 0 zone resets clat (msec): min=34, max=814, avg=118.17, stdev=58.21 lat (msec): min=34, max=814, avg=118.17, stdev=58.21 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 75], | 30.00th=[ 85], 40.00th=[ 94], 50.00th=[ 104], 60.00th=[ 115], | 70.00th=[ 131], 80.00th=[ 157], 90.00th=[ 194], 95.00th=[ 228], | 99.00th=[ 309], 99.50th=[ 355], 99.90th=[ 523], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 63, per=25.05%, avg=26.81, stdev=12.17, samples=452 iops : min= 1, max= 15, avg= 6.09, stdev= 3.11, samples=452 lat (msec) : 10=7.26%, 20=18.33%, 50=15.85%, 100=29.17%, 250=27.60% lat (msec) : 500=1.73%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.16%, ctx=5142, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144872: Mon Aug 24 11:16:09 2026 read: IOPS=6, BW=26.2KiB/s (26.8kB/s)(6052KiB/231122msec) clat (msec): min=5, max=367, avg=30.98, stdev=31.38 lat (msec): min=5, max=367, avg=30.98, stdev=31.38 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 44], 90.00th=[ 71], 95.00th=[ 94], | 99.00th=[ 142], 99.50th=[ 174], 99.90th=[ 296], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7, max= 103, per=28.25%, avg=28.82, stdev=19.52, samples=408 iops : min= 1, max= 25, avg= 6.61, stdev= 4.92, samples=408 write: IOPS=6, BW=26.0KiB/s (27.6kB/s)(6236KiB/231122msec); 0 zone resets clat (msec): min=35, max=819, avg=117.99, stdev=60.76 lat (msec): min=35, max=819, avg=118.00, stdev=60.76 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 56], 10.00th=[ 63], 20.00th=[ 74], | 30.00th=[ 83], 40.00th=[ 93], 50.00th=[ 103], 60.00th=[ 115], | 70.00th=[ 131], 80.00th=[ 153], 90.00th=[ 194], 95.00th=[ 230], | 99.00th=[ 334], 99.50th=[ 376], 99.90th=[ 493], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 56, per=24.81%, avg=26.55, stdev=12.32, samples=455 iops : min= 1, max= 14, avg= 6.02, stdev= 3.13, samples=455 lat (msec) : 10=6.71%, 20=19.21%, 50=15.82%, 100=29.65%, 250=26.63% lat (msec) : 500=1.95%, 1000=0.03% cpu : usr=0.04%, sys=1.16%, ctx=5220, 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=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=103KiB/s (105kB/s), 25.4KiB/s-26.2KiB/s (26.0kB/s-26.8kB/s), io=23.4MiB (24.6MB), run=231122-233794msec WRITE: bw=108KiB/s (110kB/s), 26.8KiB/s-27.2KiB/s (27.4kB/s-27.8kB/s), io=24.6MiB (25.7MB), run=231122-233794msec 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=144929: Mon Aug 24 11:16:44 2026 read: IOPS=16, BW=261KiB/s (267kB/s)(5920KiB/22673msec) clat (usec): min=32, max=158274, avg=31089.86, stdev=25869.63 lat (usec): min=33, max=158275, avg=31091.24, stdev=25869.53 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 56], 10.00th=[ 66], 20.00th=[ 111], | 30.00th=[ 19006], 40.00th=[ 23462], 50.00th=[ 28181], 60.00th=[ 35914], | 70.00th=[ 40633], 80.00th=[ 47973], 90.00th=[ 63177], 95.00th=[ 77071], | 99.00th=[107480], 99.50th=[137364], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 62, max= 510, per=26.08%, avg=260.32, stdev=89.30, samples=44 iops : min= 3, max= 31, avg=15.50, stdev= 5.64, samples=44 write: IOPS=17, BW=281KiB/s (288kB/s)(6368KiB/22673msec); 0 zone resets clat (usec): min=1433, max=193279, avg=27302.10, stdev=29835.97 lat (usec): min=1434, max=193282, avg=27304.07, stdev=29836.01 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1762], 10.00th=[ 2638], 20.00th=[ 4146], | 30.00th=[ 6521], 40.00th=[ 10159], 50.00th=[ 15926], 60.00th=[ 23987], | 70.00th=[ 33162], 80.00th=[ 48497], 90.00th=[ 68682], 95.00th=[ 85459], | 99.00th=[135267], 99.50th=[185598], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 63, max= 477, per=26.87%, avg=282.14, stdev=101.30, samples=44 iops : min= 3, max= 29, avg=16.86, stdev= 6.40, samples=44 lat (usec) : 50=0.78%, 100=8.20%, 250=1.69%, 500=0.26%, 1000=0.13% lat (msec) : 2=3.65%, 4=6.64%, 10=10.68%, 20=12.11%, 50=36.85% lat (msec) : 100=16.93%, 250=2.08% cpu : usr=0.07%, sys=6.78%, ctx=1502, 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=144931: Mon Aug 24 11:16:44 2026 read: IOPS=15, BW=243KiB/s (248kB/s)(5744KiB/23674msec) clat (usec): min=37, max=155630, avg=32692.52, stdev=24578.26 lat (usec): min=37, max=155631, avg=32695.04, stdev=24580.50 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 9896], | 30.00th=[ 20579], 40.00th=[ 25297], 50.00th=[ 30278], 60.00th=[ 35390], | 70.00th=[ 43254], 80.00th=[ 51643], 90.00th=[ 67634], 95.00th=[ 79168], | 99.00th=[ 91751], 99.50th=[113771], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 21, max= 447, per=24.51%, avg=244.59, stdev=104.63, samples=46 iops : min= 1, max= 27, avg=14.48, stdev= 6.53, samples=46 write: IOPS=17, BW=276KiB/s (283kB/s)(6544KiB/23674msec); 0 zone resets clat (usec): min=1324, max=294639, avg=28552.22, stdev=35051.88 lat (usec): min=1325, max=294641, avg=28570.80, stdev=35054.34 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1729], 10.00th=[ 2089], 20.00th=[ 3916], | 30.00th=[ 6521], 40.00th=[ 10945], 50.00th=[ 16909], 60.00th=[ 25035], | 70.00th=[ 35390], 80.00th=[ 45351], 90.00th=[ 68682], 95.00th=[ 89654], | 99.00th=[145753], 99.50th=[202376], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 31, max= 573, per=26.46%, avg=277.80, stdev=107.83, samples=46 iops : min= 1, max= 35, avg=16.57, stdev= 6.71, samples=46 lat (usec) : 50=0.78%, 100=7.03%, 250=0.52%, 500=0.13%, 750=0.13% lat (msec) : 2=5.47%, 4=5.99%, 10=9.90%, 20=11.46%, 50=39.32% lat (msec) : 100=16.80%, 250=2.21%, 500=0.26% cpu : usr=0.08%, sys=6.41%, ctx=1479, 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=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=144933: Mon Aug 24 11:16:44 2026 read: IOPS=16, BW=261KiB/s (267kB/s)(6256KiB/23996msec) clat (usec): min=31, max=208892, avg=32739.65, stdev=29973.42 lat (usec): min=31, max=208893, avg=32741.54, stdev=29972.45 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 89], | 30.00th=[ 17957], 40.00th=[ 23200], 50.00th=[ 28967], 60.00th=[ 35390], | 70.00th=[ 42730], 80.00th=[ 53216], 90.00th=[ 68682], 95.00th=[ 83362], | 99.00th=[139461], 99.50th=[177210], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 95, max= 446, per=26.39%, avg=263.37, stdev=83.98, samples=46 iops : min= 5, max= 27, avg=15.70, stdev= 5.29, samples=46 write: IOPS=15, BW=251KiB/s (257kB/s)(6032KiB/23996msec); 0 zone resets clat (usec): min=1405, max=261275, avg=28973.27, stdev=30320.98 lat (usec): min=1407, max=261277, avg=28985.49, stdev=30320.57 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1713], 10.00th=[ 2704], 20.00th=[ 4555], | 30.00th=[ 6849], 40.00th=[ 11338], 50.00th=[ 18482], 60.00th=[ 27919], | 70.00th=[ 39060], 80.00th=[ 52691], 90.00th=[ 65799], 95.00th=[ 90702], | 99.00th=[122160], 99.50th=[141558], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 62, max= 512, per=23.39%, avg=245.64, stdev=118.60, samples=47 iops : min= 3, max= 32, avg=14.57, stdev= 7.52, samples=47 lat (usec) : 50=1.69%, 100=9.24%, 250=0.91%, 500=0.26%, 1000=0.13% lat (msec) : 2=3.52%, 4=5.99%, 10=9.51%, 20=11.33%, 50=35.16% lat (msec) : 100=19.53%, 250=2.60%, 500=0.13% cpu : usr=0.05%, sys=6.33%, ctx=1468, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144934: Mon Aug 24 11:16:44 2026 read: IOPS=16, BW=265KiB/s (271kB/s)(6032KiB/22774msec) clat (usec): min=39, max=193200, avg=32024.29, stdev=25051.49 lat (usec): min=39, max=193201, avg=32025.28, stdev=25051.48 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 157], | 30.00th=[ 19006], 40.00th=[ 24249], 50.00th=[ 30016], 60.00th=[ 37487], | 70.00th=[ 43254], 80.00th=[ 51643], 90.00th=[ 64750], 95.00th=[ 73925], | 99.00th=[ 94897], 99.50th=[106431], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 63, max= 448, per=26.35%, avg=263.02, stdev=94.56, samples=45 iops : min= 3, max= 28, avg=15.67, stdev= 6.00, samples=45 write: IOPS=17, BW=275KiB/s (281kB/s)(6256KiB/22774msec); 0 zone resets clat (usec): min=1368, max=189238, avg=27028.15, stdev=28284.24 lat (usec): min=1370, max=189239, avg=27043.17, stdev=28283.59 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1663], 10.00th=[ 2376], 20.00th=[ 4047], | 30.00th=[ 6521], 40.00th=[ 9634], 50.00th=[ 14877], 60.00th=[ 23462], | 70.00th=[ 38011], 80.00th=[ 51643], 90.00th=[ 66847], 95.00th=[ 83362], | 99.00th=[114820], 99.50th=[135267], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 95, max= 448, per=26.17%, avg=274.82, stdev=82.37, samples=45 iops : min= 5, max= 28, avg=16.42, stdev= 5.25, samples=45 lat (usec) : 50=1.04%, 100=8.20%, 250=1.43%, 500=0.13%, 750=0.13% lat (msec) : 2=4.17%, 4=5.60%, 10=11.20%, 20=12.37%, 50=34.90% lat (msec) : 100=19.66%, 250=1.17% cpu : usr=0.08%, sys=6.72%, ctx=1520, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=998KiB/s (1022kB/s), 243KiB/s-265KiB/s (248kB/s-271kB/s), io=23.4MiB (24.5MB), run=22673-23996msec WRITE: bw=1050KiB/s (1075kB/s), 251KiB/s-281KiB/s (257kB/s-288kB/s), io=24.6MiB (25.8MB), run=22673-23996msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144927: Mon Aug 24 11:17:20 2026 read: IOPS=6, BW=101KiB/s (103kB/s)(5920KiB/58782msec) clat (msec): min=6, max=250, avg=34.51, stdev=30.06 lat (msec): min=6, max=250, avg=34.51, stdev=30.06 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 35], 80.00th=[ 44], 90.00th=[ 67], 95.00th=[ 96], | 99.00th=[ 171], 99.50th=[ 174], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 31, max= 352, per=26.96%, avg=108.10, stdev=58.59, samples=107 iops : min= 1, max= 22, avg= 6.07, stdev= 3.77, samples=107 write: IOPS=6, BW=108KiB/s (111kB/s)(6368KiB/58782msec); 0 zone resets clat (msec): min=37, max=354, avg=115.42, stdev=49.85 lat (msec): min=37, max=354, avg=115.44, stdev=49.85 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 77], | 30.00th=[ 86], 40.00th=[ 95], 50.00th=[ 105], 60.00th=[ 113], | 70.00th=[ 127], 80.00th=[ 153], 90.00th=[ 184], 95.00th=[ 218], | 99.00th=[ 275], 99.50th=[ 330], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 31, max= 192, per=25.73%, avg=108.60, stdev=41.04, samples=115 iops : min= 1, max= 12, avg= 6.10, stdev= 2.59, samples=115 lat (msec) : 10=2.21%, 20=14.97%, 50=24.09%, 100=28.65%, 250=29.04% lat (msec) : 500=1.04% cpu : usr=0.03%, sys=1.38%, ctx=1326, 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=144928: Mon Aug 24 11:17:20 2026 read: IOPS=6, BW=96.3KiB/s (98.6kB/s)(5744KiB/59636msec) clat (msec): min=6, max=222, avg=35.37, stdev=32.56 lat (msec): min=6, max=222, avg=35.37, stdev=32.56 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 46], 90.00th=[ 71], 95.00th=[ 102], | 99.00th=[ 186], 99.50th=[ 211], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 350, per=25.96%, avg=104.08, stdev=68.23, samples=108 iops : min= 1, max= 21, avg= 5.85, stdev= 4.22, samples=108 write: IOPS=6, BW=110KiB/s (112kB/s)(6544KiB/59636msec); 0 zone resets clat (msec): min=31, max=422, avg=114.24, stdev=49.85 lat (msec): min=31, max=422, avg=114.24, stdev=49.85 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 77], | 30.00th=[ 84], 40.00th=[ 94], 50.00th=[ 106], 60.00th=[ 116], | 70.00th=[ 129], 80.00th=[ 146], 90.00th=[ 184], 95.00th=[ 215], | 99.00th=[ 266], 99.50th=[ 292], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 31, max= 256, per=25.85%, avg=109.10, stdev=43.82, samples=118 iops : min= 1, max= 16, avg= 6.14, stdev= 2.85, samples=118 lat (msec) : 10=2.34%, 20=14.97%, 50=22.79%, 100=28.26%, 250=30.73% lat (msec) : 500=0.91% cpu : usr=0.04%, sys=1.39%, ctx=1423, 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=144930: Mon Aug 24 11:17:20 2026 read: IOPS=6, BW=110KiB/s (112kB/s)(6256KiB/57109msec) clat (msec): min=7, max=179, avg=33.55, stdev=28.06 lat (msec): min=7, max=179, avg=33.55, stdev=28.06 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 46], 90.00th=[ 63], 95.00th=[ 97], | 99.00th=[ 146], 99.50th=[ 167], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 31, max= 352, per=28.89%, avg=115.85, stdev=71.81, samples=107 iops : min= 1, max= 22, avg= 6.55, stdev= 4.56, samples=107 write: IOPS=6, BW=106KiB/s (108kB/s)(6032KiB/57109msec); 0 zone resets clat (msec): min=44, max=375, avg=116.20, stdev=46.83 lat (msec): min=44, max=375, avg=116.20, stdev=46.83 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 63], 10.00th=[ 69], 20.00th=[ 81], | 30.00th=[ 89], 40.00th=[ 99], 50.00th=[ 108], 60.00th=[ 117], | 70.00th=[ 129], 80.00th=[ 146], 90.00th=[ 169], 95.00th=[ 197], | 99.00th=[ 305], 99.50th=[ 326], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 31, max= 188, per=24.86%, avg=104.90, stdev=36.86, samples=113 iops : min= 1, max= 11, avg= 5.87, stdev= 2.43, samples=113 lat (msec) : 10=1.69%, 20=17.71%, 50=22.79%, 100=27.34%, 250=29.30% lat (msec) : 500=1.17% cpu : usr=0.03%, sys=1.36%, ctx=1293, 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=144932: Mon Aug 24 11:17:20 2026 read: IOPS=6, BW=103KiB/s (105kB/s)(6032KiB/58723msec) clat (msec): min=7, max=165, avg=33.36, stdev=27.25 lat (msec): min=7, max=165, avg=33.37, stdev=27.25 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 38], 80.00th=[ 45], 90.00th=[ 61], 95.00th=[ 94], | 99.00th=[ 144], 99.50th=[ 150], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 31, max= 320, per=28.65%, avg=114.88, stdev=65.16, samples=103 iops : min= 1, max= 20, avg= 6.49, stdev= 4.10, samples=103 write: IOPS=6, BW=107KiB/s (109kB/s)(6256KiB/58723msec); 0 zone resets clat (msec): min=38, max=324, avg=117.44, stdev=49.26 lat (msec): min=38, max=324, avg=117.45, stdev=49.26 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 67], 20.00th=[ 79], | 30.00th=[ 87], 40.00th=[ 97], 50.00th=[ 111], 60.00th=[ 122], | 70.00th=[ 134], 80.00th=[ 150], 90.00th=[ 171], 95.00th=[ 213], | 99.00th=[ 321], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 223, per=25.19%, avg=106.28, stdev=40.47, samples=116 iops : min= 1, max= 13, avg= 5.94, stdev= 2.63, samples=116 lat (msec) : 10=2.21%, 20=17.45%, 50=23.18%, 100=26.17%, 250=30.08% lat (msec) : 500=0.91% cpu : usr=0.03%, sys=1.36%, ctx=1365, 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=402KiB/s (411kB/s), 96.3KiB/s-110KiB/s (98.6kB/s-112kB/s), io=23.4MiB (24.5MB), run=57109-59636msec WRITE: bw=423KiB/s (433kB/s), 106KiB/s-110KiB/s (108kB/s-112kB/s), io=24.6MiB (25.8MB), run=57109-59636msec 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=144952: Mon Aug 24 11:17:32 2026 read: IOPS=2, BW=2560KiB/s (2621kB/s)(7168KiB/2800msec) clat (usec): min=771, max=258011, avg=174054.62, stdev=88675.20 lat (usec): min=772, max=258012, avg=174055.92, stdev=88675.30 clat percentiles (usec): | 1.00th=[ 775], 5.00th=[ 775], 10.00th=[ 775], 20.00th=[145753], | 30.00th=[156238], 40.00th=[156238], 50.00th=[181404], 60.00th=[225444], | 70.00th=[225444], 80.00th=[252707], 90.00th=[258999], 95.00th=[258999], | 99.00th=[258999], 99.50th=[258999], 99.90th=[258999], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 1932, max= 4394, per=49.69%, avg=2594.00, stdev=1200.89, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1829KiB/s (1872kB/s)(5120KiB/2800msec); 0 zone resets clat (msec): min=136, max=483, avg=292.20, stdev=141.05 lat (msec): min=137, max=483, avg=292.26, stdev=141.06 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 226], 60.00th=[ 226], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 2007, max= 6144, per=55.77%, avg=4075.50, stdev=2925.30, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 lat (usec) : 1000=8.33% lat (msec) : 250=58.33%, 500=33.33% cpu : usr=0.00%, sys=28.37%, ctx=193, 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=144953: Mon Aug 24 11:17:32 2026 read: IOPS=0, BW=522KiB/s (535kB/s)(2048KiB/3923msec) clat (usec): min=542, max=120102, avg=60322.87, stdev=84541.68 lat (usec): min=544, max=120105, avg=60324.78, stdev=84542.21 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 545], | 30.00th=[ 545], 40.00th=[ 545], 50.00th=[ 545], 60.00th=[120062], | 70.00th=[120062], 80.00th=[120062], 90.00th=[120062], 95.00th=[120062], | 99.00th=[120062], 99.50th=[120062], 99.90th=[120062], 99.95th=[120062], | 99.99th=[120062] bw ( KiB/s): min= 1976, max= 2048, per=38.54%, avg=2012.00, stdev=50.91, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2610KiB/s (2673kB/s)(10.0MiB/3923msec); 0 zone resets clat (msec): min=128, max=1084, avg=375.20, stdev=282.66 lat (msec): min=128, max=1085, avg=375.56, stdev=282.62 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 190], | 30.00th=[ 192], 40.00th=[ 199], 50.00th=[ 236], 60.00th=[ 351], | 70.00th=[ 384], 80.00th=[ 435], 90.00th=[ 550], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1932, max= 4087, per=44.25%, avg=3233.80, stdev=1136.35, samples=5 iops : min= 1, max= 3, avg= 2.40, stdev= 0.89, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=19.28%, ctx=212, 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=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=144954: Mon Aug 24 11:17:32 2026 read: IOPS=1, BW=1726KiB/s (1767kB/s)(6144KiB/3560msec) clat (usec): min=473, max=424440, avg=153916.87, stdev=158739.03 lat (usec): min=474, max=424440, avg=153917.99, stdev=158738.73 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], 20.00th=[ 898], | 30.00th=[ 898], 40.00th=[117965], 50.00th=[117965], 60.00th=[158335], | 70.00th=[221250], 80.00th=[221250], 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= 2043, max= 6131, per=65.27%, avg=3407.33, stdev=2358.77, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=1, BW=1726KiB/s (1767kB/s)(6144KiB/3560msec); 0 zone resets clat (msec): min=95, max=864, avg=431.49, stdev=323.42 lat (msec): min=95, max=864, avg=431.57, stdev=323.43 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 334], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 2043, max= 4087, per=41.06%, avg=3000.67, stdev=1028.06, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 500=8.33%, 1000=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 1000=16.67% cpu : usr=0.00%, sys=14.86%, ctx=221, 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=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=144955: Mon Aug 24 11:17:32 2026 read: IOPS=1, BW=1609KiB/s (1647kB/s)(5120KiB/3183msec) clat (usec): min=476, max=273834, avg=137926.30, stdev=101691.29 lat (usec): min=477, max=273835, avg=137927.27, stdev=101691.08 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 478], | 30.00th=[104334], 40.00th=[104334], 50.00th=[122160], 60.00th=[122160], | 70.00th=[189793], 80.00th=[189793], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 4087, max= 4096, per=78.38%, avg=4091.50, stdev= 6.36, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2252KiB/s (2306kB/s)(7168KiB/3183msec); 0 zone resets clat (msec): min=128, max=650, avg=348.03, stdev=189.92 lat (msec): min=128, max=650, avg=348.47, stdev=189.86 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 153], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 321], 60.00th=[ 326], | 70.00th=[ 326], 80.00th=[ 542], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1381, max= 4015, per=31.25%, avg=2283.80, stdev=1006.16, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 500=8.33% lat (msec) : 250=41.67%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=23.44%, ctx=172, 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=5220KiB/s (5346kB/s), 522KiB/s-2560KiB/s (535kB/s-2621kB/s), io=20.0MiB (20.0MB), run=2800-3923msec WRITE: bw=7309KiB/s (7484kB/s), 1726KiB/s-2610KiB/s (1767kB/s-2673kB/s), io=28.0MiB (29.4MB), run=2800-3923msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144956: Mon Aug 24 11:17:33 2026 read: IOPS=1, BW=1996KiB/s (2044kB/s)(7168KiB/3591msec) clat (msec): min=132, max=893, avg=333.77, stdev=268.18 lat (msec): min=132, max=893, avg=333.78, stdev=268.18 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 157], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 203], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 422], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 1532, max= 4087, per=74.58%, avg=3235.33, stdev=1475.13, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1426KiB/s (1460kB/s)(5120KiB/3591msec); 0 zone resets clat (msec): min=129, max=281, avg=215.39, stdev=69.12 lat (msec): min=129, max=281, avg=215.51, stdev=69.13 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 130], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 253], 60.00th=[ 253], | 70.00th=[ 262], 80.00th=[ 262], 90.00th=[ 284], 95.00th=[ 284], | 99.00th=[ 284], 99.50th=[ 284], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 2043, max= 3757, per=43.05%, avg=2614.33, stdev=989.58, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=50.00%, 500=41.67%, 1000=8.33% cpu : usr=0.00%, sys=6.82%, ctx=115, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144957: Mon Aug 24 11:17:33 2026 read: IOPS=0, BW=479KiB/s (490kB/s)(2048KiB/4276msec) clat (msec): min=112, max=421, avg=267.20, stdev=218.20 lat (msec): min=112, max=421, avg=267.21, stdev=218.20 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 113], 60.00th=[ 422], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 1481, max= 2043, per=40.62%, avg=1762.00, stdev=397.39, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2395KiB/s (2452kB/s)(10.0MiB/4276msec); 0 zone resets clat (msec): min=153, max=787, avg=359.85, stdev=240.98 lat (msec): min=153, max=787, avg=359.97, stdev=240.98 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 161], | 30.00th=[ 174], 40.00th=[ 184], 50.00th=[ 218], 60.00th=[ 292], | 70.00th=[ 388], 80.00th=[ 506], 90.00th=[ 743], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 2039, max= 6119, per=50.43%, avg=3062.33, stdev=1706.31, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 250=50.00%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.05%, sys=8.42%, ctx=183, 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=144958: Mon Aug 24 11:17:33 2026 read: IOPS=1, BW=1344KiB/s (1376kB/s)(6144KiB/4572msec) clat (msec): min=74, max=904, avg=228.92, stdev=331.33 lat (msec): min=74, max=904, avg=228.92, stdev=331.33 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 85], | 30.00th=[ 85], 40.00th=[ 100], 50.00th=[ 100], 60.00th=[ 103], | 70.00th=[ 109], 80.00th=[ 109], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1878, max= 4079, per=61.47%, avg=2666.67, stdev=1225.90, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1344KiB/s (1376kB/s)(6144KiB/4572msec); 0 zone resets clat (msec): min=152, max=1289, avg=506.02, stdev=412.51 lat (msec): min=152, max=1289, avg=506.10, stdev=412.51 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 1469, max= 4079, per=38.96%, avg=2366.25, stdev=1166.77, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 500=8.33%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=5.05%, ctx=77, 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=144959: Mon Aug 24 11:17:33 2026 read: IOPS=1, BW=1085KiB/s (1111kB/s)(5120KiB/4721msec) clat (msec): min=62, max=571, avg=303.74, stdev=211.47 lat (msec): min=62, max=571, avg=303.74, stdev=211.47 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 63], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 414], 80.00th=[ 414], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1878, max= 4087, per=61.50%, avg=2668.00, stdev=1231.52, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1518KiB/s (1555kB/s)(7168KiB/4721msec); 0 zone resets clat (msec): min=130, max=1338, avg=452.05, stdev=432.54 lat (msec): min=130, max=1338, avg=452.17, stdev=432.52 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 148], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 309], 60.00th=[ 401], | 70.00th=[ 401], 80.00th=[ 659], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 1878, max= 4087, per=43.93%, avg=2668.00, stdev=1231.52, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 2000=8.33% cpu : usr=0.02%, sys=3.56%, ctx=76, 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=4338KiB/s (4442kB/s), 479KiB/s-1996KiB/s (490kB/s-2044kB/s), io=20.0MiB (20.0MB), run=3591-4721msec WRITE: bw=6073KiB/s (6219kB/s), 1344KiB/s-2395KiB/s (1376kB/s-2452kB/s), io=28.0MiB (29.4MB), run=3591-4721msec 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=144965: Mon Aug 24 11:17:47 2026 read: IOPS=0, BW=2554KiB/s (2615kB/s)(12.0MiB/4812msec) clat (msec): min=696, max=3240, avg=1583.41, stdev=1436.48 lat (msec): min=696, max=3240, avg=1583.41, stdev=1436.48 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 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= 7984, max= 8031, per=100.00%, avg=8007.50, stdev=33.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=9.40%, ctx=659, 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=144966: Mon Aug 24 11:17:47 2026 read: IOPS=0, BW=895KiB/s (916kB/s)(4096KiB/4578msec) clat (nsec): min=3235.1M, max=3235.1M, avg=3235058598.00, stdev= 0.00 lat (nsec): min=3235.1M, max=3235.1M, avg=3235059755.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3239], 5.00th=[ 3239], 10.00th=[ 3239], 20.00th=[ 3239], | 30.00th=[ 3239], 40.00th=[ 3239], 50.00th=[ 3239], 60.00th=[ 3239], | 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= 7984, max= 7984, per=100.00%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1789KiB/s (1832kB/s)(8192KiB/4578msec); 0 zone resets clat (msec): min=538, max=771, avg=655.15, stdev=164.34 lat (msec): min=540, max=771, avg=655.90, stdev=163.74 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.58%, ctx=455, 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=144967: Mon Aug 24 11:17:47 2026 write: IOPS=0, BW=2304KiB/s (2359kB/s)(12.0MiB/5334msec); 0 zone resets clat (msec): min=679, max=3553, avg=1775.94, stdev=1553.46 lat (msec): min=683, max=3553, avg=1777.51, stdev=1552.05 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 3540], 80.00th=[ 3540], 90.00th=[ 3540], 95.00th=[ 3540], | 99.00th=[ 3540], 99.50th=[ 3540], 99.90th=[ 3540], 99.95th=[ 3540], | 99.99th=[ 3540] bw ( KiB/s): min= 7984, max= 8031, per=100.00%, avg=8007.50, stdev=33.23, 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=0.00%, sys=3.45%, ctx=93, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144968: Mon Aug 24 11:17:47 2026 write: IOPS=0, BW=2705KiB/s (2770kB/s)(12.0MiB/4542msec); 0 zone resets clat (msec): min=282, max=3598, avg=1513.03, stdev=1815.96 lat (msec): min=282, max=3599, avg=1513.51, stdev=1816.29 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 3608], 80.00th=[ 3608], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min=16351, max=16351, per=100.00%, avg=16351.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.62%, ctx=47, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3405KiB/s (3487kB/s), 895KiB/s-2554KiB/s (916kB/s-2615kB/s), io=16.0MiB (16.8MB), run=4578-4812msec WRITE: bw=6143KiB/s (6291kB/s), 1789KiB/s-2705KiB/s (1832kB/s-2770kB/s), io=32.0MiB (33.6MB), run=4542-5334msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144970: Mon Aug 24 11:17:48 2026 read: IOPS=0, BW=2291KiB/s (2346kB/s)(12.0MiB/5364msec) clat (msec): min=374, max=3788, avg=1777.92, stdev=1786.34 lat (msec): min=374, max=3788, avg=1777.92, stdev=1786.34 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 3775], 80.00th=[ 3775], 90.00th=[ 3775], 95.00th=[ 3775], | 99.00th=[ 3775], 99.50th=[ 3775], 99.90th=[ 3775], 99.95th=[ 3775], | 99.99th=[ 3775] bw ( KiB/s): min= 8094, max= 8126, per=100.00%, avg=8110.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.01%, ctx=51, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144971: Mon Aug 24 11:17:48 2026 read: IOPS=0, BW=874KiB/s (895kB/s)(4096KiB/4686msec) clat (nsec): min=3382.4M, max=3382.4M, avg=3382436857.00, stdev= 0.00 lat (nsec): min=3382.4M, max=3382.4M, avg=3382438792.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3373], 5.00th=[ 3373], 10.00th=[ 3373], 20.00th=[ 3373], | 30.00th=[ 3373], 40.00th=[ 3373], 50.00th=[ 3373], 60.00th=[ 3373], | 70.00th=[ 3373], 80.00th=[ 3373], 90.00th=[ 3373], 95.00th=[ 3373], | 99.00th=[ 3373], 99.50th=[ 3373], 99.90th=[ 3373], 99.95th=[ 3373], | 99.99th=[ 3373] 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=1748KiB/s (1790kB/s)(8192KiB/4686msec); 0 zone resets clat (msec): min=346, max=915, avg=630.63, stdev=402.40 lat (msec): min=346, max=915, avg=631.08, stdev=402.24 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 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 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.11%, sys=2.11%, ctx=32, 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=144972: Mon Aug 24 11:17:48 2026 write: IOPS=0, BW=2350KiB/s (2407kB/s)(12.0MiB/5228msec); 0 zone resets clat (msec): min=726, max=3610, avg=1721.57, stdev=1637.05 lat (msec): min=729, max=3611, avg=1723.08, stdev=1635.97 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 3608], 80.00th=[ 3608], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 8094, max= 8159, per=100.00%, avg=8126.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.54%, ctx=45, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144973: Mon Aug 24 11:17:48 2026 write: IOPS=0, BW=2795KiB/s (2862kB/s)(12.0MiB/4397msec); 0 zone resets clat (msec): min=210, max=3723, avg=1453.59, stdev=1969.06 lat (msec): min=212, max=3724, avg=1454.15, stdev=1968.87 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 3708], 80.00th=[ 3708], 90.00th=[ 3708], 95.00th=[ 3708], | 99.00th=[ 3708], 99.50th=[ 3708], 99.90th=[ 3708], 99.95th=[ 3708], | 99.99th=[ 3708] bw ( KiB/s): min=11055, max=11055, per=100.00%, avg=11055.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.30%, ctx=46, 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=3054KiB/s (3128kB/s), 874KiB/s-2291KiB/s (895kB/s-2346kB/s), io=16.0MiB (16.8MB), run=4686-5364msec WRITE: bw=6268KiB/s (6418kB/s), 1748KiB/s-2795KiB/s (1790kB/s-2862kB/s), io=32.0MiB (33.6MB), run=4397-5228msec