== sanity test 398b: DIO and buffer IO race ============== 11:16:09 (1789053369) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.80201 s, 7.4 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=144066: Thu Sep 10 11:18:58 2026 read: IOPS=10, BW=40.7KiB/s (41.7kB/s)(5992KiB/147162msec) clat (usec): min=33, max=443182, avg=47725.67, stdev=37522.33 lat (usec): min=34, max=443183, avg=47733.21, stdev=37521.24 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 68], 10.00th=[ 157], 20.00th=[ 20317], | 30.00th=[ 27132], 40.00th=[ 33817], 50.00th=[ 40633], 60.00th=[ 48497], | 70.00th=[ 59507], 80.00th=[ 71828], 90.00th=[ 91751], 95.00th=[112722], | 99.00th=[170918], 99.50th=[208667], 99.90th=[337642], 99.95th=[442500], | 99.99th=[442500] bw ( KiB/s): min= 7, max= 118, per=24.98%, avg=40.48, stdev=19.61, samples=286 iops : min= 1, max= 29, avg= 9.48, stdev= 4.96, samples=286 write: IOPS=10, BW=42.8KiB/s (43.8kB/s)(6296KiB/147162msec); 0 zone resets clat (usec): min=750, max=959579, avg=47725.08, stdev=56014.98 lat (usec): min=751, max=959581, avg=47735.02, stdev=56018.49 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1237], 10.00th=[ 1467], 20.00th=[ 4424], | 30.00th=[ 10290], 40.00th=[ 19792], 50.00th=[ 33817], 60.00th=[ 46400], | 70.00th=[ 63177], 80.00th=[ 83362], 90.00th=[110625], 95.00th=[139461], | 99.00th=[221250], 99.50th=[252707], 99.90th=[616563], 99.95th=[960496], | 99.99th=[960496] bw ( KiB/s): min= 7, max= 133, per=25.31%, avg=42.77, stdev=19.27, samples=285 iops : min= 1, max= 33, avg=10.06, stdev= 4.83, samples=285 lat (usec) : 50=0.42%, 100=4.13%, 250=0.46%, 500=0.03%, 1000=0.16% lat (msec) : 2=6.25%, 4=3.58%, 10=5.63%, 20=9.51%, 50=31.84% lat (msec) : 100=27.51%, 250=10.12%, 500=0.29%, 750=0.03%, 1000=0.03% cpu : usr=0.09%, sys=5.00%, ctx=6479, 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=144067: Thu Sep 10 11:18:58 2026 read: IOPS=10, BW=41.6KiB/s (42.6kB/s)(5940KiB/142777msec) clat (usec): min=32, max=992694, avg=45338.34, stdev=43553.73 lat (usec): min=32, max=992696, avg=45340.51, stdev=43554.10 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 64], 10.00th=[ 90], 20.00th=[ 17957], | 30.00th=[ 25297], 40.00th=[ 31589], 50.00th=[ 38011], 60.00th=[ 45351], | 70.00th=[ 54789], 80.00th=[ 67634], 90.00th=[ 89654], 95.00th=[109577], | 99.00th=[166724], 99.50th=[185598], 99.90th=[329253], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 114, per=25.66%, avg=41.56, stdev=19.54, samples=278 iops : min= 1, max= 28, avg= 9.76, stdev= 4.93, samples=278 write: IOPS=11, BW=44.5KiB/s (45.5kB/s)(6348KiB/142777msec); 0 zone resets clat (usec): min=901, max=453388, avg=47151.26, stdev=50059.58 lat (usec): min=902, max=453390, avg=47153.21, stdev=50059.58 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1270], 10.00th=[ 1647], 20.00th=[ 5276], | 30.00th=[ 10814], 40.00th=[ 22152], 50.00th=[ 33817], 60.00th=[ 46400], | 70.00th=[ 61080], 80.00th=[ 81265], 90.00th=[108528], 95.00th=[143655], | 99.00th=[219153], 99.50th=[240124], 99.90th=[434111], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 7, max= 111, per=26.20%, avg=44.28, stdev=20.49, samples=279 iops : min= 1, max= 27, avg=10.44, stdev= 5.18, samples=279 lat (usec) : 50=0.65%, 100=4.43%, 250=0.75%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.20% lat (msec) : 2=5.76%, 4=2.96%, 10=6.38%, 20=9.38%, 50=33.27% lat (msec) : 100=25.88%, 250=9.83%, 500=0.33%, 1000=0.03% cpu : usr=0.08%, sys=4.87%, ctx=6290, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144068: Thu Sep 10 11:18:58 2026 read: IOPS=10, BW=41.2KiB/s (42.2kB/s)(6028KiB/146326msec) clat (usec): min=28, max=232920, avg=44011.11, stdev=33154.05 lat (usec): min=28, max=232921, avg=44013.90, stdev=33155.57 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 62], 10.00th=[ 84], 20.00th=[ 17433], | 30.00th=[ 25035], 40.00th=[ 30540], 50.00th=[ 38536], 60.00th=[ 46400], | 70.00th=[ 57410], 80.00th=[ 69731], 90.00th=[ 87557], 95.00th=[105382], | 99.00th=[141558], 99.50th=[158335], 99.90th=[214959], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 7, max= 104, per=25.69%, avg=41.62, stdev=19.97, samples=282 iops : min= 1, max= 26, avg= 9.76, stdev= 5.03, samples=282 write: IOPS=10, BW=42.8KiB/s (43.8kB/s)(6260KiB/146326msec); 0 zone resets clat (usec): min=936, max=1212.4k, avg=50838.59, stdev=62901.41 lat (usec): min=937, max=1212.4k, avg=50841.44, stdev=62901.06 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1270], 10.00th=[ 1549], | 20.00th=[ 5014], 30.00th=[ 11338], 40.00th=[ 24773], | 50.00th=[ 36963], 60.00th=[ 48497], 70.00th=[ 64226], | 80.00th=[ 83362], 90.00th=[ 115868], 95.00th=[ 145753], | 99.00th=[ 244319], 99.50th=[ 329253], 99.90th=[ 624952], | 99.95th=[1216349], 99.99th=[1216349] bw ( KiB/s): min= 7, max= 95, per=25.28%, avg=42.72, stdev=19.78, samples=285 iops : min= 1, max= 23, avg=10.05, stdev= 4.99, samples=285 lat (usec) : 50=0.75%, 100=4.62%, 250=0.55%, 500=0.23%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=6.12%, 4=3.16%, 10=5.40%, 20=9.31%, 50=32.36% lat (msec) : 100=27.21%, 250=9.67%, 500=0.33%, 750=0.07%, 2000=0.03% cpu : usr=0.10%, sys=4.88%, ctx=6365, 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=144069: Thu Sep 10 11:18:58 2026 read: IOPS=10, BW=40.9KiB/s (41.9kB/s)(6052KiB/147981msec) clat (usec): min=32, max=409706, avg=47098.06, stdev=38169.56 lat (usec): min=32, max=409708, avg=47100.95, stdev=38169.64 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 63], 10.00th=[ 88], 20.00th=[ 19530], | 30.00th=[ 26084], 40.00th=[ 32113], 50.00th=[ 40109], 60.00th=[ 47973], | 70.00th=[ 57410], 80.00th=[ 72877], 90.00th=[ 92799], 95.00th=[115868], | 99.00th=[162530], 99.50th=[196084], 99.90th=[341836], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 7, max= 115, per=25.46%, avg=41.25, stdev=20.45, samples=284 iops : min= 1, max= 28, avg= 9.67, stdev= 5.15, samples=284 write: IOPS=10, BW=42.1KiB/s (43.2kB/s)(6236KiB/147981msec); 0 zone resets clat (usec): min=647, max=1323.4k, avg=48829.18, stdev=58586.55 lat (usec): min=647, max=1323.4k, avg=48831.70, stdev=58586.46 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1254], 10.00th=[ 1565], | 20.00th=[ 5080], 30.00th=[ 10945], 40.00th=[ 23462], | 50.00th=[ 35914], 60.00th=[ 47973], 70.00th=[ 62653], | 80.00th=[ 83362], 90.00th=[ 116917], 95.00th=[ 141558], | 99.00th=[ 202376], 99.50th=[ 252707], 99.90th=[ 463471], | 99.95th=[1317012], 99.99th=[1317012] bw ( KiB/s): min= 7, max= 118, per=24.78%, avg=41.88, stdev=20.55, samples=288 iops : min= 1, max= 29, avg= 9.83, stdev= 5.17, samples=288 lat (usec) : 50=0.75%, 100=4.43%, 250=0.52%, 500=0.13%, 750=0.10% lat (usec) : 1000=0.39% lat (msec) : 2=5.79%, 4=2.47%, 10=6.18%, 20=8.24%, 50=33.01% lat (msec) : 100=27.18%, 250=10.38%, 500=0.39%, 2000=0.03% cpu : usr=0.09%, sys=4.94%, ctx=6494, 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=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=162KiB/s (166kB/s), 40.7KiB/s-41.6KiB/s (41.7kB/s-42.6kB/s), io=23.4MiB (24.6MB), run=142777-147981msec WRITE: bw=170KiB/s (174kB/s), 42.1KiB/s-44.5KiB/s (43.2kB/s-45.5kB/s), io=24.6MiB (25.7MB), run=142777-147981msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144062: Thu Sep 10 11:21:21 2026 read: IOPS=5, BW=20.7KiB/s (21.2kB/s)(5992KiB/289702msec) clat (msec): min=5, max=939, avg=37.75, stdev=46.00 lat (msec): min=5, max=939, avg=37.75, stdev=46.00 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 53], 90.00th=[ 88], 95.00th=[ 112], | 99.00th=[ 194], 99.50th=[ 249], 99.90th=[ 527], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 94, per=29.29%, avg=24.02, stdev=17.15, samples=480 iops : min= 1, max= 23, avg= 5.34, stdev= 4.32, samples=480 write: IOPS=5, BW=21.7KiB/s (22.3kB/s)(6296KiB/289702msec); 0 zone resets clat (msec): min=30, max=617, avg=147.85, stdev=78.74 lat (msec): min=30, max=617, avg=147.86, stdev=78.74 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 70], 20.00th=[ 84], | 30.00th=[ 97], 40.00th=[ 111], 50.00th=[ 128], 60.00th=[ 146], | 70.00th=[ 169], 80.00th=[ 205], 90.00th=[ 266], 95.00th=[ 309], | 99.00th=[ 388], 99.50th=[ 426], 99.90th=[ 584], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 7, max= 63, per=24.94%, avg=21.45, stdev=11.40, samples=562 iops : min= 1, max= 15, avg= 4.70, stdev= 2.90, samples=562 lat (msec) : 10=4.17%, 20=17.32%, 50=18.00%, 100=22.20%, 250=32.16% lat (msec) : 500=6.02%, 750=0.10%, 1000=0.03% cpu : usr=0.04%, sys=1.04%, ctx=5048, 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=144063: Thu Sep 10 11:21:21 2026 read: IOPS=5, BW=20.5KiB/s (20.9kB/s)(5940KiB/290418msec) clat (msec): min=4, max=1080, avg=38.33, stdev=50.50 lat (msec): min=4, max=1080, avg=38.33, stdev=50.50 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 38], 80.00th=[ 53], 90.00th=[ 88], 95.00th=[ 116], | 99.00th=[ 190], 99.50th=[ 275], 99.90th=[ 558], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 116, per=29.15%, avg=23.90, stdev=16.84, samples=479 iops : min= 1, max= 29, avg= 5.33, stdev= 4.25, samples=479 write: IOPS=5, BW=21.9KiB/s (22.4kB/s)(6348KiB/290418msec); 0 zone resets clat (msec): min=31, max=655, avg=146.83, stdev=77.52 lat (msec): min=31, max=655, avg=146.83, stdev=77.52 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 59], 10.00th=[ 69], 20.00th=[ 84], | 30.00th=[ 97], 40.00th=[ 111], 50.00th=[ 129], 60.00th=[ 146], | 70.00th=[ 174], 80.00th=[ 201], 90.00th=[ 253], 95.00th=[ 300], | 99.00th=[ 397], 99.50th=[ 451], 99.90th=[ 535], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7, max= 63, per=25.25%, avg=21.72, stdev=11.25, samples=561 iops : min= 1, max= 15, avg= 4.76, stdev= 2.87, samples=561 lat (msec) : 10=4.26%, 20=17.58%, 50=17.35%, 100=22.79%, 250=32.32% lat (msec) : 500=5.50%, 750=0.16%, 2000=0.03% cpu : usr=0.04%, sys=1.07%, ctx=4989, 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=144064: Thu Sep 10 11:21:21 2026 read: IOPS=5, BW=20.7KiB/s (21.2kB/s)(6028KiB/291336msec) clat (msec): min=4, max=557, avg=38.99, stdev=45.98 lat (msec): min=4, max=557, avg=38.99, stdev=45.98 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 55], 90.00th=[ 91], 95.00th=[ 122], | 99.00th=[ 220], 99.50th=[ 264], 99.90th=[ 518], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 7, max= 124, per=29.04%, avg=23.81, stdev=17.56, samples=487 iops : min= 1, max= 31, avg= 5.29, stdev= 4.44, samples=487 write: IOPS=5, BW=21.5KiB/s (22.0kB/s)(6260KiB/291336msec); 0 zone resets clat (msec): min=28, max=1182, avg=148.33, stdev=81.73 lat (msec): min=28, max=1182, avg=148.33, stdev=81.73 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 58], 10.00th=[ 70], 20.00th=[ 85], | 30.00th=[ 99], 40.00th=[ 113], 50.00th=[ 130], 60.00th=[ 148], | 70.00th=[ 174], 80.00th=[ 205], 90.00th=[ 253], 95.00th=[ 300], | 99.00th=[ 388], 99.50th=[ 430], 99.90th=[ 785], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 56, per=25.01%, avg=21.50, stdev=11.26, samples=557 iops : min= 1, max= 14, avg= 4.71, stdev= 2.87, samples=557 lat (msec) : 10=4.72%, 20=16.28%, 50=18.13%, 100=22.17%, 250=32.88% lat (msec) : 500=5.63%, 750=0.13%, 1000=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.07%, ctx=5075, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144065: Thu Sep 10 11:21:21 2026 read: IOPS=5, BW=21.0KiB/s (21.5kB/s)(6052KiB/288139msec) clat (msec): min=5, max=570, avg=38.34, stdev=44.79 lat (msec): min=5, max=570, avg=38.34, stdev=44.79 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 54], 90.00th=[ 89], 95.00th=[ 122], | 99.00th=[ 194], 99.50th=[ 224], 99.90th=[ 527], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 126, per=29.99%, avg=24.59, stdev=17.77, samples=474 iops : min= 1, max= 31, avg= 5.49, stdev= 4.48, samples=474 write: IOPS=5, BW=21.6KiB/s (22.2kB/s)(6236KiB/288139msec); 0 zone resets clat (msec): min=30, max=1335, avg=147.33, stdev=82.78 lat (msec): min=30, max=1335, avg=147.33, stdev=82.78 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 59], 10.00th=[ 70], 20.00th=[ 85], | 30.00th=[ 99], 40.00th=[ 112], 50.00th=[ 127], 60.00th=[ 148], | 70.00th=[ 171], 80.00th=[ 205], 90.00th=[ 247], 95.00th=[ 296], | 99.00th=[ 393], 99.50th=[ 447], 99.90th=[ 718], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7, max= 63, per=24.75%, avg=21.28, stdev=11.19, samples=561 iops : min= 1, max= 15, avg= 4.65, stdev= 2.84, samples=561 lat (msec) : 10=4.88%, 20=16.70%, 50=18.03%, 100=21.78%, 250=33.59% lat (msec) : 500=4.72%, 750=0.26%, 2000=0.03% cpu : usr=0.04%, sys=1.08%, ctx=5022, 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=82.4KiB/s (84.4kB/s), 20.5KiB/s-21.0KiB/s (20.9kB/s-21.5kB/s), io=23.4MiB (24.6MB), run=288139-291336msec WRITE: bw=86.3KiB/s (88.4kB/s), 21.5KiB/s-21.9KiB/s (22.0kB/s-22.4kB/s), io=24.6MiB (25.7MB), run=288139-291336msec 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=144131: Thu Sep 10 11:21:59 2026 read: IOPS=15, BW=241KiB/s (247kB/s)(5920KiB/24540msec) clat (usec): min=24, max=163182, avg=34423.71, stdev=26720.69 lat (usec): min=24, max=163182, avg=34425.60, stdev=26720.64 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 10814], | 30.00th=[ 21103], 40.00th=[ 26608], 50.00th=[ 31327], 60.00th=[ 36963], | 70.00th=[ 45351], 80.00th=[ 53216], 90.00th=[ 66847], 95.00th=[ 76022], | 99.00th=[127402], 99.50th=[141558], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 95, max= 438, per=25.14%, avg=240.04, stdev=90.97, samples=48 iops : min= 5, max= 27, avg=14.25, stdev= 5.77, samples=48 write: IOPS=16, BW=259KiB/s (266kB/s)(6368KiB/24540msec); 0 zone resets clat (usec): min=1165, max=177375, avg=29496.47, stdev=32539.12 lat (usec): min=1166, max=177377, avg=29498.43, stdev=32539.14 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1663], 10.00th=[ 2343], 20.00th=[ 4424], | 30.00th=[ 7439], 40.00th=[ 11600], 50.00th=[ 17171], 60.00th=[ 26870], | 70.00th=[ 36963], 80.00th=[ 49546], 90.00th=[ 70779], 95.00th=[ 95945], | 99.00th=[158335], 99.50th=[168821], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 95, max= 476, per=25.86%, avg=259.85, stdev=98.88, samples=48 iops : min= 5, max= 29, avg=15.50, stdev= 6.25, samples=48 lat (usec) : 50=1.56%, 100=7.29%, 250=0.26% lat (msec) : 2=3.91%, 4=5.47%, 10=9.64%, 20=13.54%, 50=36.33% lat (msec) : 100=18.36%, 250=3.65% cpu : usr=0.09%, sys=6.59%, ctx=1474, 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=144132: Thu Sep 10 11:21:59 2026 read: IOPS=14, BW=229KiB/s (235kB/s)(5744KiB/25071msec) clat (usec): min=37, max=224706, avg=37332.89, stdev=30192.01 lat (usec): min=37, max=224709, avg=37334.00, stdev=30192.06 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 15533], | 30.00th=[ 22676], 40.00th=[ 27395], 50.00th=[ 32900], 60.00th=[ 39060], | 70.00th=[ 45351], 80.00th=[ 57934], 90.00th=[ 73925], 95.00th=[ 91751], | 99.00th=[152044], 99.50th=[160433], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 62, max= 382, per=23.74%, avg=226.69, stdev=78.65, samples=49 iops : min= 3, max= 23, avg=13.43, stdev= 4.97, samples=49 write: IOPS=16, BW=261KiB/s (267kB/s)(6544KiB/25071msec); 0 zone resets clat (usec): min=1195, max=218534, avg=28167.68, stdev=30473.61 lat (usec): min=1195, max=218536, avg=28169.79, stdev=30473.66 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1663], 10.00th=[ 2343], 20.00th=[ 4490], | 30.00th=[ 6652], 40.00th=[ 9765], 50.00th=[ 16712], 60.00th=[ 27132], | 70.00th=[ 36439], 80.00th=[ 49021], 90.00th=[ 67634], 95.00th=[ 83362], | 99.00th=[135267], 99.50th=[158335], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 64, max= 540, per=25.60%, avg=257.29, stdev=97.83, samples=49 iops : min= 4, max= 33, avg=15.35, stdev= 6.16, samples=49 lat (usec) : 50=0.78%, 100=6.90%, 250=0.39%, 500=0.13% lat (msec) : 2=4.69%, 4=4.82%, 10=12.11%, 20=10.55%, 50=37.11% lat (msec) : 100=19.14%, 250=3.39% cpu : usr=0.08%, sys=6.24%, ctx=1350, 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=144133: Thu Sep 10 11:21:59 2026 read: IOPS=15, BW=254KiB/s (260kB/s)(6256KiB/24617msec) clat (usec): min=39, max=193155, avg=34905.53, stdev=29648.37 lat (usec): min=40, max=193156, avg=34906.73, stdev=29648.31 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 13960], | 30.00th=[ 20841], 40.00th=[ 25560], 50.00th=[ 30540], 60.00th=[ 36963], | 70.00th=[ 44303], 80.00th=[ 50594], 90.00th=[ 66323], 95.00th=[ 89654], | 99.00th=[162530], 99.50th=[185598], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 95, max= 415, per=26.79%, avg=255.85, stdev=79.02, samples=48 iops : min= 5, max= 25, avg=15.25, stdev= 5.01, samples=48 write: IOPS=15, BW=245KiB/s (251kB/s)(6032KiB/24617msec); 0 zone resets clat (usec): min=1135, max=177905, avg=28698.87, stdev=29137.89 lat (usec): min=1137, max=177908, avg=28712.44, stdev=29172.94 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1663], 10.00th=[ 2114], 20.00th=[ 4752], | 30.00th=[ 7373], 40.00th=[ 12387], 50.00th=[ 20317], 60.00th=[ 27132], | 70.00th=[ 36439], 80.00th=[ 47973], 90.00th=[ 65799], 95.00th=[ 82314], | 99.00th=[137364], 99.50th=[156238], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 95, max= 414, per=24.09%, avg=242.08, stdev=83.62, samples=48 iops : min= 5, max= 25, avg=14.38, stdev= 5.27, samples=48 lat (usec) : 50=1.04%, 100=8.07%, 250=0.13% lat (msec) : 2=4.43%, 4=3.91%, 10=8.98%, 20=12.89%, 50=40.89% lat (msec) : 100=16.28%, 250=3.39% cpu : usr=0.06%, sys=6.71%, ctx=1484, 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=144134: Thu Sep 10 11:21:59 2026 read: IOPS=15, BW=243KiB/s (249kB/s)(6032KiB/24848msec) clat (usec): min=35, max=249003, avg=35326.24, stdev=31756.51 lat (usec): min=35, max=249004, avg=35327.58, stdev=31756.60 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 9765], | 30.00th=[ 22152], 40.00th=[ 26084], 50.00th=[ 30802], 60.00th=[ 36439], | 70.00th=[ 43254], 80.00th=[ 54789], 90.00th=[ 67634], 95.00th=[ 81265], | 99.00th=[181404], 99.50th=[229639], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 438, per=25.07%, avg=239.39, stdev=91.22, samples=49 iops : min= 1, max= 27, avg=14.18, stdev= 5.75, samples=49 write: IOPS=15, BW=252KiB/s (258kB/s)(6256KiB/24848msec); 0 zone resets clat (usec): min=1091, max=356058, avg=29103.82, stdev=36555.56 lat (usec): min=1093, max=356060, avg=29117.25, stdev=36553.18 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1565], 10.00th=[ 1827], 20.00th=[ 3326], | 30.00th=[ 5473], 40.00th=[ 8455], 50.00th=[ 16057], 60.00th=[ 25297], | 70.00th=[ 36439], 80.00th=[ 51119], 90.00th=[ 72877], 95.00th=[ 94897], | 99.00th=[164627], 99.50th=[258999], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 63, max= 478, per=24.95%, avg=250.80, stdev=105.98, samples=49 iops : min= 3, max= 29, avg=14.92, stdev= 6.71, samples=49 lat (usec) : 50=1.17%, 100=7.55%, 250=0.65%, 1000=0.13% lat (msec) : 2=6.12%, 4=5.60%, 10=10.55%, 20=9.11%, 50=37.37% lat (msec) : 100=18.23%, 250=3.26%, 500=0.26% cpu : usr=0.06%, sys=5.88%, ctx=1375, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=955KiB/s (978kB/s), 229KiB/s-254KiB/s (235kB/s-260kB/s), io=23.4MiB (24.5MB), run=24540-25071msec WRITE: bw=1005KiB/s (1029kB/s), 245KiB/s-261KiB/s (251kB/s-267kB/s), io=24.6MiB (25.8MB), run=24540-25071msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144136: Thu Sep 10 11:22:39 2026 read: IOPS=5, BW=90.8KiB/s (93.0kB/s)(5920KiB/65175msec) clat (msec): min=5, max=309, avg=36.71, stdev=35.73 lat (msec): min=5, max=309, avg=36.71, stdev=35.73 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 52], 90.00th=[ 75], 95.00th=[ 111], | 99.00th=[ 180], 99.50th=[ 232], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 31, max= 319, per=26.13%, avg=95.90, stdev=59.77, samples=119 iops : min= 1, max= 19, avg= 5.24, stdev= 3.84, samples=119 write: IOPS=6, BW=97.7KiB/s (100kB/s)(6368KiB/65175msec); 0 zone resets clat (msec): min=29, max=362, avg=129.55, stdev=54.19 lat (msec): min=29, max=362, avg=129.55, stdev=54.19 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 59], 10.00th=[ 70], 20.00th=[ 85], | 30.00th=[ 95], 40.00th=[ 109], 50.00th=[ 118], 60.00th=[ 132], | 70.00th=[ 153], 80.00th=[ 178], 90.00th=[ 213], 95.00th=[ 234], | 99.00th=[ 284], 99.50th=[ 288], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 30, max= 223, per=25.05%, avg=96.70, stdev=42.88, samples=128 iops : min= 1, max= 13, avg= 5.27, stdev= 2.78, samples=128 lat (msec) : 10=2.34%, 20=15.76%, 50=21.22%, 100=23.18%, 250=36.07% lat (msec) : 500=1.43% cpu : usr=0.05%, sys=1.32%, ctx=1286, 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=144137: Thu Sep 10 11:22:39 2026 read: IOPS=5, BW=88.6KiB/s (90.8kB/s)(5744KiB/64808msec) clat (msec): min=5, max=179, avg=32.65, stdev=26.96 lat (msec): min=5, max=179, avg=32.65, stdev=26.96 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 44], 90.00th=[ 65], 95.00th=[ 96], | 99.00th=[ 138], 99.50th=[ 144], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 22, max= 313, per=27.43%, avg=100.66, stdev=64.27, samples=111 iops : min= 1, max= 19, avg= 5.56, stdev= 4.10, samples=111 write: IOPS=6, BW=101KiB/s (103kB/s)(6544KiB/64808msec); 0 zone resets clat (msec): min=30, max=372, avg=129.68, stdev=56.84 lat (msec): min=30, max=372, avg=129.69, stdev=56.84 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 71], 20.00th=[ 82], | 30.00th=[ 94], 40.00th=[ 106], 50.00th=[ 118], 60.00th=[ 133], | 70.00th=[ 146], 80.00th=[ 171], 90.00th=[ 203], 95.00th=[ 247], | 99.00th=[ 321], 99.50th=[ 334], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 30, max= 221, per=25.98%, avg=100.30, stdev=42.63, samples=127 iops : min= 1, max= 13, avg= 5.51, stdev= 2.73, samples=127 lat (msec) : 10=2.73%, 20=15.89%, 50=21.09%, 100=23.44%, 250=34.51% lat (msec) : 500=2.34% cpu : usr=0.04%, sys=1.20%, ctx=1304, 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=144138: Thu Sep 10 11:22:39 2026 read: IOPS=6, BW=99.1KiB/s (101kB/s)(6256KiB/63159msec) clat (msec): min=6, max=306, avg=35.32, stdev=34.61 lat (msec): min=6, max=306, avg=35.32, stdev=34.61 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 50], 90.00th=[ 69], 95.00th=[ 91], | 99.00th=[ 188], 99.50th=[ 284], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 30, max= 318, per=28.12%, avg=103.22, stdev=71.00, samples=119 iops : min= 1, max= 19, avg= 5.70, stdev= 4.48, samples=119 write: IOPS=5, BW=95.5KiB/s (97.8kB/s)(6032KiB/63159msec); 0 zone resets clat (msec): min=39, max=372, avg=130.81, stdev=56.53 lat (msec): min=39, max=372, avg=130.82, stdev=56.53 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 73], 20.00th=[ 86], | 30.00th=[ 95], 40.00th=[ 107], 50.00th=[ 118], 60.00th=[ 130], | 70.00th=[ 146], 80.00th=[ 167], 90.00th=[ 207], 95.00th=[ 249], | 99.00th=[ 330], 99.50th=[ 355], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 31, max= 192, per=24.87%, avg=95.99, stdev=36.32, samples=122 iops : min= 1, max= 12, avg= 5.24, stdev= 2.36, samples=122 lat (msec) : 10=1.82%, 20=18.36%, 50=21.09%, 100=24.61%, 250=31.51% lat (msec) : 500=2.60% cpu : usr=0.04%, sys=1.21%, ctx=1235, 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=144139: Thu Sep 10 11:22:39 2026 read: IOPS=5, BW=93.1KiB/s (95.3kB/s)(6032KiB/64822msec) clat (msec): min=6, max=275, avg=34.62, stdev=33.68 lat (msec): min=6, max=275, avg=34.62, stdev=33.68 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 47], 90.00th=[ 68], 95.00th=[ 96], | 99.00th=[ 205], 99.50th=[ 236], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 286, per=27.84%, avg=102.18, stdev=63.67, samples=116 iops : min= 1, max= 17, avg= 5.63, stdev= 4.01, samples=116 write: IOPS=6, BW=96.5KiB/s (98.8kB/s)(6256KiB/64822msec); 0 zone resets clat (msec): min=31, max=388, avg=132.32, stdev=57.57 lat (msec): min=31, max=388, avg=132.32, stdev=57.57 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 72], 20.00th=[ 88], | 30.00th=[ 95], 40.00th=[ 108], 50.00th=[ 118], 60.00th=[ 136], | 70.00th=[ 153], 80.00th=[ 174], 90.00th=[ 209], 95.00th=[ 249], | 99.00th=[ 313], 99.50th=[ 355], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 31, max= 223, per=25.14%, avg=97.06, stdev=40.41, samples=127 iops : min= 1, max= 13, avg= 5.30, stdev= 2.63, samples=127 lat (msec) : 10=2.60%, 20=15.89%, 50=22.53%, 100=23.05%, 250=33.33% lat (msec) : 500=2.60% cpu : usr=0.03%, sys=1.30%, ctx=1341, 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=368KiB/s (376kB/s), 88.6KiB/s-99.1KiB/s (90.8kB/s-101kB/s), io=23.4MiB (24.5MB), run=63159-65175msec WRITE: bw=387KiB/s (396kB/s), 95.5KiB/s-101KiB/s (97.8kB/s-103kB/s), io=24.6MiB (25.8MB), run=63159-65175msec 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=144156: Thu Sep 10 11:22:54 2026 read: IOPS=2, BW=2516KiB/s (2576kB/s)(7168KiB/2849msec) clat (usec): min=1023, max=297744, avg=167333.10, stdev=108120.80 lat (usec): min=1025, max=297745, avg=167334.76, stdev=108120.64 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1020], 10.00th=[ 1020], 20.00th=[ 77071], | 30.00th=[141558], 40.00th=[141558], 50.00th=[166724], 60.00th=[196084], | 70.00th=[196084], 80.00th=[291505], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 2015, max= 4557, per=75.65%, avg=2654.50, stdev=1268.34, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1797KiB/s (1840kB/s)(5120KiB/2849msec); 0 zone resets clat (msec): min=203, max=412, avg=328.95, stdev=82.48 lat (msec): min=203, max=412, avg=329.04, stdev=82.46 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 2015, max= 2039, per=41.22%, avg=2025.00, stdev=10.58, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 2=8.33%, 100=8.33%, 250=33.33%, 500=50.00% cpu : usr=0.00%, sys=17.77%, ctx=173, 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=144157: Thu Sep 10 11:22:54 2026 read: IOPS=0, BW=381KiB/s (391kB/s)(2048KiB/5370msec) clat (msec): min=137, max=318, avg=227.98, stdev=128.06 lat (msec): min=137, max=318, avg=227.99, stdev=128.06 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 1454, max= 2015, per=49.43%, avg=1734.50, stdev=396.69, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1907KiB/s (1953kB/s)(10.0MiB/5370msec); 0 zone resets clat (msec): min=89, max=2058, avg=487.53, stdev=586.39 lat (msec): min=90, max=2058, avg=488.56, stdev=585.93 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 136], | 30.00th=[ 165], 40.00th=[ 197], 50.00th=[ 271], 60.00th=[ 305], | 70.00th=[ 363], 80.00th=[ 609], 90.00th=[ 693], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 2019, max= 6131, per=74.56%, avg=3663.00, stdev=2231.14, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 2.19, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=10.95%, ctx=264, 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=144158: Thu Sep 10 11:22:54 2026 read: IOPS=1, BW=1053KiB/s (1078kB/s)(6144KiB/5835msec) clat (usec): min=482, max=2714.7k, avg=692771.13, stdev=1025851.15 lat (usec): min=483, max=2714.7k, avg=692772.57, stdev=1025851.31 clat percentiles (usec): | 1.00th=[ 482], 5.00th=[ 482], 10.00th=[ 482], | 20.00th=[ 158335], 30.00th=[ 158335], 40.00th=[ 225444], | 50.00th=[ 225444], 60.00th=[ 267387], 70.00th=[ 792724], | 80.00th=[ 792724], 90.00th=[2701132], 95.00th=[2701132], | 99.00th=[2701132], 99.50th=[2701132], 99.90th=[2701132], | 99.95th=[2701132], 99.99th=[2701132] bw ( KiB/s): min= 2027, max= 4071, per=72.47%, avg=2543.00, stdev=1018.68, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1053KiB/s (1078kB/s)(6144KiB/5835msec); 0 zone resets clat (msec): min=104, max=458, avg=275.58, stdev=123.93 lat (msec): min=104, max=458, avg=275.66, stdev=123.96 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 284], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 2015, max= 4071, per=56.89%, avg=2795.00, stdev=986.10, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=33.33%, 500=41.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=10.18%, ctx=542, 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=144159: Thu Sep 10 11:22:54 2026 read: IOPS=1, BW=1681KiB/s (1722kB/s)(5120KiB/3045msec) clat (usec): min=1015, max=336250, avg=216312.83, stdev=127070.45 lat (usec): min=1017, max=336252, avg=216314.67, stdev=127070.75 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1020], 10.00th=[ 1020], 20.00th=[ 1020], | 30.00th=[231736], 40.00th=[231736], 50.00th=[240124], 60.00th=[240124], | 70.00th=[270533], 80.00th=[270533], 90.00th=[337642], 95.00th=[337642], | 99.00th=[337642], 99.50th=[337642], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 2015, max= 4079, per=77.14%, avg=2707.00, stdev=1188.20, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=2, BW=2354KiB/s (2411kB/s)(7168KiB/3045msec); 0 zone resets clat (msec): min=162, max=504, avg=277.13, stdev=128.30 lat (msec): min=162, max=504, avg=277.23, stdev=128.30 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 275], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 368], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 1549, max= 4055, per=51.72%, avg=2541.00, stdev=1332.06, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=18.36%, ctx=184, 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=3510KiB/s (3594kB/s), 381KiB/s-2516KiB/s (391kB/s-2576kB/s), io=20.0MiB (20.0MB), run=2849-5835msec WRITE: bw=4914KiB/s (5032kB/s), 1053KiB/s-2354KiB/s (1078kB/s-2411kB/s), io=28.0MiB (29.4MB), run=2849-5835msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144161: Thu Sep 10 11:22:56 2026 read: IOPS=1, BW=1220KiB/s (1249kB/s)(7168KiB/5877msec) clat (msec): min=97, max=808, avg=294.34, stdev=247.05 lat (msec): min=97, max=808, avg=294.35, stdev=247.04 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 159], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 169], 60.00th=[ 259], | 70.00th=[ 259], 80.00th=[ 401], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1646, max= 3961, per=73.72%, avg=2314.80, stdev=933.01, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=871KiB/s (892kB/s)(5120KiB/5877msec); 0 zone resets clat (msec): min=251, max=2507, avg=749.39, stdev=984.51 lat (msec): min=251, max=2508, avg=749.50, stdev=984.51 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 262], 40.00th=[ 262], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 1928, max= 4031, per=60.49%, avg=2659.33, stdev=1188.77, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=3.68%, ctx=78, 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=144162: Thu Sep 10 11:22:56 2026 read: IOPS=0, BW=314KiB/s (322kB/s)(2048KiB/6521msec) clat (msec): min=148, max=310, avg=229.40, stdev=114.70 lat (msec): min=148, max=310, avg=229.40, stdev=114.70 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 313], 90.00th=[ 313], 95.00th=[ 313], | 99.00th=[ 313], 99.50th=[ 313], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 1654, max= 2039, per=58.81%, avg=1846.50, stdev=272.24, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1570KiB/s (1608kB/s)(10.0MiB/6521msec); 0 zone resets clat (msec): min=124, max=2962, avg=599.62, stdev=867.08 lat (msec): min=124, max=2962, avg=599.98, stdev=867.12 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 153], | 30.00th=[ 184], 40.00th=[ 194], 50.00th=[ 209], 60.00th=[ 271], | 70.00th=[ 313], 80.00th=[ 760], 90.00th=[ 827], 95.00th=[ 2970], | 99.00th=[ 2970], 99.50th=[ 2970], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] bw ( KiB/s): min= 1928, max= 6119, per=60.97%, avg=2680.17, stdev=1685.10, samples=6 iops : min= 1, max= 5, avg= 1.67, stdev= 1.63, samples=6 lat (msec) : 250=50.00%, 500=25.00%, 1000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=3.42%, ctx=122, 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=144163: Thu Sep 10 11:22:56 2026 read: IOPS=1, BW=1040KiB/s (1065kB/s)(6144KiB/5906msec) clat (msec): min=98, max=2352, avg=574.44, stdev=882.29 lat (msec): min=98, max=2352, avg=574.44, stdev=882.29 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 110], | 30.00th=[ 110], 40.00th=[ 146], 50.00th=[ 146], 60.00th=[ 271], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 2015, max= 4079, per=100.00%, avg=3351.67, stdev=1159.09, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1040KiB/s (1065kB/s)(6144KiB/5906msec); 0 zone resets clat (msec): min=143, max=792, avg=398.58, stdev=243.91 lat (msec): min=143, max=792, avg=398.68, stdev=243.91 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 355], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1899, max= 2039, per=45.06%, avg=1981.00, stdev=64.46, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.54%, ctx=66, 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=144164: Thu Sep 10 11:22:56 2026 read: IOPS=0, BW=841KiB/s (861kB/s)(5120KiB/6087msec) clat (msec): min=76, max=2504, avg=645.37, stdev=1041.77 lat (msec): min=76, max=2504, avg=645.37, stdev=1041.77 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 194], 60.00th=[ 194], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 2019, max= 4031, per=85.87%, avg=2696.33, stdev=1155.90, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1178KiB/s (1206kB/s)(7168KiB/6087msec); 0 zone resets clat (msec): min=181, max=712, avg=383.93, stdev=194.04 lat (msec): min=182, max=712, avg=384.08, stdev=194.05 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 209], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 376], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 531], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1928, max= 2019, per=44.73%, avg=1966.50, stdev=41.54, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=3.15%, ctx=76, 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=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=3141KiB/s (3216kB/s), 314KiB/s-1220KiB/s (322kB/s-1249kB/s), io=20.0MiB (20.0MB), run=5877-6521msec WRITE: bw=4397KiB/s (4502kB/s), 871KiB/s-1570KiB/s (892kB/s-1608kB/s), io=28.0MiB (29.4MB), run=5877-6521msec 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=144176: Thu Sep 10 11:23:10 2026 read: IOPS=1, BW=4247KiB/s (4349kB/s)(12.0MiB/2893msec) clat (msec): min=779, max=1084, avg=932.93, stdev=152.50 lat (msec): min=779, max=1084, avg=932.93, stdev=152.50 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8094, max= 8192, per=100.00%, avg=8143.00, stdev=69.30, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=13.14%, ctx=297, 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=144177: Thu Sep 10 11:23:10 2026 read: IOPS=0, BW=1267KiB/s (1297kB/s)(4096KiB/3234msec) clat (nsec): min=690104k, max=690104k, avg=690104430.00, stdev= 0.00 lat (nsec): min=690107k, max=690107k, avg=690107400.00, stdev= 0.00 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=[ 693], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2533KiB/s (2594kB/s)(8192KiB/3234msec); 0 zone resets clat (msec): min=887, max=1360, avg=1124.03, stdev=334.29 lat (msec): min=887, max=1360, avg=1124.44, stdev=334.39 clat percentiles (msec): | 1.00th=[ 885], 5.00th=[ 885], 10.00th=[ 885], 20.00th=[ 885], | 30.00th=[ 885], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 1368], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 8094, max= 8094, per=93.80%, avg=8094.00, 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=4.82%, ctx=112, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144178: Thu Sep 10 11:23:10 2026 write: IOPS=0, BW=3236KiB/s (3314kB/s)(12.0MiB/3797msec); 0 zone resets clat (msec): min=319, max=1699, avg=1186.37, stdev=755.18 lat (msec): min=320, max=1702, avg=1187.80, stdev=755.73 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 1536], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8094, max= 8192, per=94.37%, avg=8143.00, stdev=69.30, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.05%, sys=3.32%, ctx=44, 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=144179: Thu Sep 10 11:23:10 2026 write: IOPS=1, BW=4460KiB/s (4567kB/s)(12.0MiB/2755msec); 0 zone resets clat (msec): min=366, max=1138, avg=823.80, stdev=404.94 lat (msec): min=367, max=1141, avg=825.00, stdev=405.85 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7984, max= 8126, per=93.35%, avg=8055.00, stdev=100.41, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=5.92%, ctx=73, 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=5066KiB/s (5188kB/s), 1267KiB/s-4247KiB/s (1297kB/s-4349kB/s), io=16.0MiB (16.8MB), run=2893-3234msec WRITE: bw=8630KiB/s (8837kB/s), 2533KiB/s-4460KiB/s (2594kB/s-4567kB/s), io=32.0MiB (33.6MB), run=2755-3797msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144172: Thu Sep 10 11:23:10 2026 read: IOPS=0, BW=3833KiB/s (3925kB/s)(12.0MiB/3206msec) clat (msec): min=208, max=1612, avg=1049.28, stdev=741.80 lat (msec): min=208, max=1612, avg=1049.28, stdev=741.80 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 1334], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.68%, ctx=42, 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=144173: Thu Sep 10 11:23:10 2026 read: IOPS=0, BW=1031KiB/s (1056kB/s)(4096KiB/3973msec) clat (nsec): min=1223.7M, max=1223.7M, avg=1223673765.00, stdev= 0.00 lat (nsec): min=1223.7M, max=1223.7M, avg=1223676424.00, stdev= 0.00 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=[ 1217], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7148, max= 7148, per=100.00%, avg=7148.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2062KiB/s (2111kB/s)(8192KiB/3973msec); 0 zone resets clat (msec): min=1209, max=1475, avg=1342.30, stdev=188.39 lat (msec): min=1209, max=1475, avg=1342.68, stdev=188.39 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= 8175, max= 8175, per=99.13%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=2.29%, ctx=34, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144174: Thu Sep 10 11:23:10 2026 write: IOPS=1, BW=6417KiB/s (6571kB/s)(12.0MiB/1915msec); 0 zone resets clat (msec): min=434, max=928, avg=609.56, stdev=276.97 lat (msec): min=435, max=929, avg=611.27, stdev=275.95 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 435], 10.00th=[ 435], 20.00th=[ 435], | 30.00th=[ 435], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 5704, max= 8078, per=83.56%, avg=6891.00, stdev=1678.67, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=6.21%, ctx=63, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144175: Thu Sep 10 11:23:10 2026 write: IOPS=1, BW=5220KiB/s (5345kB/s)(12.0MiB/2354msec); 0 zone resets clat (msec): min=363, max=1030, avg=753.82, stdev=347.64 lat (msec): min=364, max=1030, avg=754.35, stdev=347.67 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 5876, max= 8015, per=84.22%, avg=6945.50, stdev=1512.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.18%, ctx=50, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4124KiB/s (4223kB/s), 1031KiB/s-3833KiB/s (1056kB/s-3925kB/s), io=16.0MiB (16.8MB), run=3206-3973msec WRITE: bw=8248KiB/s (8446kB/s), 2062KiB/s-6417KiB/s (2111kB/s-6571kB/s), io=32.0MiB (33.6MB), run=1915-3973msec