== sanity test 398b: DIO and buffer IO race ============== 02:01:41 (1787119301) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.56604 s, 9.0 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=144720: Wed Aug 19 02:04:02 2026 read: IOPS=12, BW=48.8KiB/s (50.0kB/s)(5992KiB/122667msec) clat (usec): min=28, max=897112, avg=39984.63, stdev=35201.09 lat (usec): min=28, max=897114, avg=40004.70, stdev=35204.41 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 1926], 20.00th=[ 18744], | 30.00th=[ 24511], 40.00th=[ 28967], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 49546], 80.00th=[ 58983], 90.00th=[ 77071], 95.00th=[ 89654], | 99.00th=[125305], 99.50th=[145753], 99.90th=[193987], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 7, max= 119, per=25.20%, avg=48.88, stdev=18.80, samples=239 iops : min= 1, max= 29, avg=11.58, stdev= 4.70, samples=239 write: IOPS=12, BW=51.3KiB/s (52.6kB/s)(6296KiB/122667msec); 0 zone resets clat (usec): min=1087, max=474826, avg=39557.25, stdev=41415.04 lat (usec): min=1089, max=474827, avg=39560.98, stdev=41413.35 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1401], 10.00th=[ 1958], 20.00th=[ 5080], | 30.00th=[ 9241], 40.00th=[ 19530], 50.00th=[ 31065], 60.00th=[ 40633], | 70.00th=[ 51119], 80.00th=[ 66323], 90.00th=[ 90702], 95.00th=[110625], | 99.00th=[162530], 99.50th=[219153], 99.90th=[421528], 99.95th=[476054], | 99.99th=[476054] bw ( KiB/s): min= 7, max= 118, per=25.16%, avg=51.07, stdev=20.05, samples=240 iops : min= 1, max= 29, avg=12.13, stdev= 5.04, samples=240 lat (usec) : 50=0.65%, 100=3.97%, 250=0.10%, 750=0.10% lat (msec) : 2=5.21%, 4=3.65%, 10=7.36%, 20=10.55%, 50=37.83% lat (msec) : 100=25.55%, 250=4.82%, 500=0.20%, 1000=0.03% cpu : usr=0.07%, sys=5.16%, ctx=6577, 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=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=144723: Wed Aug 19 02:04:02 2026 read: IOPS=12, BW=49.4KiB/s (50.6kB/s)(5940KiB/120199msec) clat (usec): min=27, max=971765, avg=40449.34, stdev=37190.48 lat (usec): min=27, max=971768, avg=40454.75, stdev=37190.25 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 8717], 20.00th=[ 19006], | 30.00th=[ 24511], 40.00th=[ 29492], 50.00th=[ 34866], 60.00th=[ 41157], | 70.00th=[ 48497], 80.00th=[ 60031], 90.00th=[ 76022], 95.00th=[ 90702], | 99.00th=[129500], 99.50th=[152044], 99.90th=[246416], 99.95th=[968885], | 99.99th=[968885] bw ( KiB/s): min= 7, max= 95, per=25.66%, avg=49.78, stdev=18.85, samples=233 iops : min= 1, max= 23, avg=11.81, stdev= 4.74, samples=233 write: IOPS=13, BW=52.8KiB/s (54.1kB/s)(6348KiB/120199msec); 0 zone resets clat (usec): min=1011, max=410884, avg=37532.97, stdev=38327.11 lat (usec): min=1013, max=410887, avg=37534.67, stdev=38327.13 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1385], 10.00th=[ 2114], 20.00th=[ 4621], | 30.00th=[ 9110], 40.00th=[ 18482], 50.00th=[ 28705], 60.00th=[ 39060], | 70.00th=[ 49546], 80.00th=[ 62653], 90.00th=[ 85459], 95.00th=[105382], | 99.00th=[170918], 99.50th=[208667], 99.90th=[337642], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 7, max= 126, per=26.12%, avg=53.03, stdev=20.49, samples=234 iops : min= 1, max= 31, avg=12.62, stdev= 5.14, samples=234 lat (usec) : 50=0.55%, 100=3.68%, 250=0.33%, 500=0.10%, 750=0.03% lat (msec) : 2=5.05%, 4=4.07%, 10=7.36%, 20=10.81%, 50=38.80% lat (msec) : 100=24.84%, 250=4.26%, 500=0.10%, 1000=0.03% cpu : usr=0.08%, sys=5.14%, ctx=6490, 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=144725: Wed Aug 19 02:04:02 2026 read: IOPS=12, BW=49.2KiB/s (50.4kB/s)(6028KiB/122494msec) clat (usec): min=33, max=1048.9k, avg=39988.68, stdev=41087.54 lat (usec): min=33, max=1048.9k, avg=40006.54, stdev=41090.87 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 58], 10.00th=[ 86], | 20.00th=[ 18482], 30.00th=[ 23200], 40.00th=[ 28443], | 50.00th=[ 33424], 60.00th=[ 38536], 70.00th=[ 47449], | 80.00th=[ 57410], 90.00th=[ 76022], 95.00th=[ 91751], | 99.00th=[ 147850], 99.50th=[ 212861], 99.90th=[ 354419], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 7, max= 111, per=25.40%, avg=49.28, stdev=19.51, samples=239 iops : min= 1, max= 27, avg=11.68, stdev= 4.92, samples=239 write: IOPS=12, BW=51.1KiB/s (52.3kB/s)(6260KiB/122494msec); 0 zone resets clat (usec): min=1026, max=232644, avg=39453.16, stdev=38278.51 lat (usec): min=1027, max=232646, avg=39456.44, stdev=38277.95 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1369], 10.00th=[ 1598], 20.00th=[ 4359], | 30.00th=[ 9372], 40.00th=[ 20579], 50.00th=[ 30278], 60.00th=[ 41157], | 70.00th=[ 52691], 80.00th=[ 66847], 90.00th=[ 92799], 95.00th=[110625], | 99.00th=[160433], 99.50th=[212861], 99.90th=[223347], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 7, max= 119, per=25.07%, avg=50.89, stdev=19.89, samples=240 iops : min= 1, max= 29, avg=12.08, stdev= 4.99, samples=240 lat (usec) : 50=0.78%, 100=4.23%, 250=0.13%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=6.18%, 4=3.58%, 10=6.25%, 20=9.86%, 50=39.23% lat (msec) : 100=24.06%, 250=5.40%, 500=0.16%, 2000=0.03% cpu : usr=0.08%, sys=5.02%, ctx=6471, 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=144727: Wed Aug 19 02:04:02 2026 read: IOPS=12, BW=49.1KiB/s (50.2kB/s)(6052KiB/123367msec) clat (usec): min=25, max=435024, avg=39532.97, stdev=30299.27 lat (usec): min=25, max=435025, avg=39537.96, stdev=30299.21 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 57], 10.00th=[ 124], 20.00th=[ 18220], | 30.00th=[ 23987], 40.00th=[ 29492], 50.00th=[ 34341], 60.00th=[ 40633], | 70.00th=[ 49546], 80.00th=[ 59507], 90.00th=[ 74974], 95.00th=[ 90702], | 99.00th=[127402], 99.50th=[166724], 99.90th=[329253], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 7, max= 126, per=25.44%, avg=49.36, stdev=20.80, samples=237 iops : min= 1, max= 31, avg=11.70, stdev= 5.25, samples=237 write: IOPS=12, BW=50.5KiB/s (51.8kB/s)(6236KiB/123367msec); 0 zone resets clat (usec): min=817, max=1118.9k, avg=40467.59, stdev=49641.69 lat (usec): min=818, max=1118.9k, avg=40473.74, stdev=49643.10 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1385], 10.00th=[ 1762], | 20.00th=[ 4490], 30.00th=[ 8717], 40.00th=[ 18744], | 50.00th=[ 28705], 60.00th=[ 38536], 70.00th=[ 52167], | 80.00th=[ 69731], 90.00th=[ 94897], 95.00th=[ 112722], | 99.00th=[ 185598], 99.50th=[ 231736], 99.90th=[ 379585], | 99.95th=[1115685], 99.99th=[1115685] bw ( KiB/s): min= 7, max= 125, per=24.71%, avg=50.17, stdev=20.43, samples=241 iops : min= 1, max= 31, avg=11.91, stdev= 5.12, samples=241 lat (usec) : 50=0.81%, 100=3.94%, 250=0.49%, 500=0.03%, 1000=0.07% lat (msec) : 2=5.96%, 4=3.65%, 10=6.93%, 20=10.35%, 50=37.43% lat (msec) : 100=24.87%, 250=5.21%, 500=0.23%, 2000=0.03% cpu : usr=0.09%, sys=4.98%, ctx=6456, 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=195KiB/s (199kB/s), 48.8KiB/s-49.4KiB/s (50.0kB/s-50.6kB/s), io=23.4MiB (24.6MB), run=120199-123367msec WRITE: bw=204KiB/s (209kB/s), 50.5KiB/s-52.8KiB/s (51.8kB/s-54.1kB/s), io=24.6MiB (25.7MB), run=120199-123367msec fio: pid=144726, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=144721: Wed Aug 19 02:06:10 2026 read: IOPS=5, BW=23.9KiB/s (24.5kB/s)(5992KiB/250793msec) clat (msec): min=5, max=925, avg=35.63, stdev=40.49 lat (msec): min=5, max=925, avg=35.63, stdev=40.49 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 38], 80.00th=[ 49], 90.00th=[ 74], 95.00th=[ 99], | 99.00th=[ 159], 99.50th=[ 197], 99.90th=[ 426], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7, max= 103, per=30.14%, avg=26.22, stdev=18.21, samples=442 iops : min= 1, max= 25, avg= 5.92, stdev= 4.61, samples=442 write: IOPS=6, BW=25.1KiB/s (25.7kB/s)(6296KiB/250793msec); 0 zone resets clat (msec): min=32, max=522, avg=125.14, stdev=61.61 lat (msec): min=32, max=522, avg=125.15, stdev=61.61 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 54], 10.00th=[ 63], 20.00th=[ 75], | 30.00th=[ 87], 40.00th=[ 99], 50.00th=[ 110], 60.00th=[ 126], | 70.00th=[ 146], 80.00th=[ 169], 90.00th=[ 207], 95.00th=[ 243], | 99.00th=[ 330], 99.50th=[ 376], 99.90th=[ 477], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 7, max= 56, per=27.09%, avg=24.65, stdev=11.78, samples=492 iops : min= 1, max= 14, avg= 5.52, stdev= 3.01, samples=492 lat (msec) : 10=4.00%, 20=15.04%, 50=21.81%, 100=27.21%, 250=29.75% lat (msec) : 500=2.12%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=1.42%, ctx=5645, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144722: Wed Aug 19 02:06:10 2026 read: IOPS=5, BW=23.6KiB/s (24.2kB/s)(5940KiB/251319msec) clat (msec): min=5, max=1001, avg=35.76, stdev=41.52 lat (msec): min=5, max=1001, avg=35.76, stdev=41.52 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 73], 95.00th=[ 104], | 99.00th=[ 161], 99.50th=[ 209], 99.90th=[ 430], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 94, per=30.18%, avg=26.25, stdev=16.69, samples=437 iops : min= 1, max= 23, avg= 5.93, stdev= 4.20, samples=437 write: IOPS=6, BW=25.3KiB/s (25.9kB/s)(6348KiB/251319msec); 0 zone resets clat (msec): min=26, max=524, avg=124.62, stdev=61.32 lat (msec): min=26, max=524, avg=124.63, stdev=61.31 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 63], 20.00th=[ 77], | 30.00th=[ 87], 40.00th=[ 97], 50.00th=[ 110], 60.00th=[ 124], | 70.00th=[ 142], 80.00th=[ 169], 90.00th=[ 209], 95.00th=[ 239], | 99.00th=[ 338], 99.50th=[ 384], 99.90th=[ 489], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 7, max= 64, per=27.31%, avg=24.85, stdev=11.44, samples=492 iops : min= 1, max= 16, avg= 5.57, stdev= 2.94, samples=492 lat (msec) : 10=3.52%, 20=15.46%, 50=21.78%, 100=27.18%, 250=29.95% lat (msec) : 500=2.05%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.38%, ctx=5667, 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=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=144724: Wed Aug 19 02:06:10 2026 read: IOPS=6, BW=24.1KiB/s (24.7kB/s)(6028KiB/250073msec) clat (msec): min=5, max=357, avg=36.05, stdev=32.88 lat (msec): min=5, max=357, avg=36.06, stdev=32.88 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 77], 95.00th=[ 97], | 99.00th=[ 174], 99.50th=[ 213], 99.90th=[ 264], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 87, per=29.58%, avg=25.73, stdev=17.47, samples=453 iops : min= 1, max= 21, avg= 5.80, stdev= 4.41, samples=453 write: IOPS=6, BW=25.0KiB/s (25.6kB/s)(6260KiB/250073msec); 0 zone resets clat (msec): min=32, max=1087, avg=124.81, stdev=65.80 lat (msec): min=32, max=1087, avg=124.81, stdev=65.80 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 75], | 30.00th=[ 86], 40.00th=[ 97], 50.00th=[ 111], 60.00th=[ 125], | 70.00th=[ 144], 80.00th=[ 167], 90.00th=[ 205], 95.00th=[ 243], | 99.00th=[ 321], 99.50th=[ 409], 99.90th=[ 523], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 72, per=27.27%, avg=24.82, stdev=11.86, samples=487 iops : min= 1, max= 18, avg= 5.56, stdev= 3.04, samples=487 lat (msec) : 10=3.84%, 20=13.90%, 50=23.63%, 100=26.95%, 250=29.36% lat (msec) : 500=2.21%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.41%, ctx=5505, 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=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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=144726: Wed Aug 19 02:06:10 2026 read: IOPS=5, BW=20.9KiB/s (21.4kB/s)(3908KiB/186671msec) clat (msec): min=5, max=441, avg=42.82, stdev=44.90 lat (msec): min=5, max=441, avg=42.83, stdev=44.91 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 45], 80.00th=[ 62], 90.00th=[ 91], 95.00th=[ 125], | 99.00th=[ 222], 99.50th=[ 284], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7, max= 127, per=27.37%, avg=23.81, stdev=17.15, samples=316 iops : min= 1, max= 31, avg= 5.30, stdev= 4.32, samples=316 write: IOPS=5, BW=21.5KiB/s (22.1kB/s)(4020KiB/186671msec); 0 zone resets clat (msec): min=42, max=1115, avg=143.68, stdev=70.59 lat (msec): min=42, max=1115, avg=143.69, stdev=70.59 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 72], 20.00th=[ 88], | 30.00th=[ 104], 40.00th=[ 117], 50.00th=[ 133], 60.00th=[ 148], | 70.00th=[ 167], 80.00th=[ 188], 90.00th=[ 226], 95.00th=[ 262], | 99.00th=[ 342], 99.50th=[ 409], 99.90th=[ 456], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 55, per=23.19%, avg=21.10, stdev=10.18, samples=365 iops : min= 1, max= 13, avg= 4.61, stdev= 2.61, samples=365 lat (msec) : 10=2.82%, 20=13.06%, 50=21.18%, 100=22.44%, 250=37.01% lat (msec) : 500=3.38%, 2000=0.05% cpu : usr=0.04%, sys=1.19%, ctx=3263, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=978,1005,0,0 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=87.0KiB/s (89.1kB/s), 20.9KiB/s-24.1KiB/s (21.4kB/s-24.7kB/s), io=21.4MiB (22.4MB), run=186671-251319msec WRITE: bw=91.2KiB/s (93.4kB/s), 21.5KiB/s-25.3KiB/s (22.1kB/s-25.9kB/s), io=22.4MiB (23.5MB), run=186671-251319msec 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=144781: Wed Aug 19 02:06:44 2026 read: IOPS=14, BW=235KiB/s (240kB/s)(5920KiB/25207msec) clat (usec): min=24, max=162954, avg=32903.34, stdev=29273.86 lat (usec): min=24, max=162956, avg=32905.98, stdev=29274.01 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 52], 10.00th=[ 58], 20.00th=[ 73], | 30.00th=[ 15926], 40.00th=[ 24511], 50.00th=[ 31327], 60.00th=[ 37487], | 70.00th=[ 42730], 80.00th=[ 53216], 90.00th=[ 72877], 95.00th=[ 85459], | 99.00th=[127402], 99.50th=[133694], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 63, max= 477, per=24.21%, avg=230.00, stdev=95.80, samples=49 iops : min= 3, max= 29, avg=13.61, stdev= 6.03, samples=49 write: IOPS=15, BW=253KiB/s (259kB/s)(6368KiB/25207msec); 0 zone resets clat (usec): min=1407, max=178400, avg=31769.08, stdev=30687.59 lat (usec): min=1411, max=178404, avg=31771.38, stdev=30687.59 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1926], 10.00th=[ 2638], 20.00th=[ 4555], | 30.00th=[ 7504], 40.00th=[ 14353], 50.00th=[ 22938], 60.00th=[ 30802], | 70.00th=[ 42206], 80.00th=[ 59507], 90.00th=[ 76022], 95.00th=[ 93848], | 99.00th=[117965], 99.50th=[137364], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 62, max= 506, per=25.50%, avg=254.73, stdev=96.62, samples=48 iops : min= 3, max= 31, avg=15.17, stdev= 6.11, samples=48 lat (usec) : 50=1.82%, 100=10.42%, 250=0.78%, 500=0.39%, 1000=0.13% lat (msec) : 2=3.12%, 4=6.64%, 10=8.72%, 20=8.59%, 50=36.07% lat (msec) : 100=19.92%, 250=3.39% cpu : usr=0.10%, sys=6.29%, ctx=1448, 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=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=144783: Wed Aug 19 02:06:44 2026 read: IOPS=14, BW=229KiB/s (234kB/s)(5744KiB/25089msec) clat (usec): min=35, max=149754, avg=35278.97, stdev=28101.08 lat (usec): min=36, max=149756, avg=35280.17, stdev=28101.10 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 58], 10.00th=[ 67], 20.00th=[ 95], | 30.00th=[ 21365], 40.00th=[ 26608], 50.00th=[ 31851], 60.00th=[ 39060], | 70.00th=[ 46924], 80.00th=[ 57934], 90.00th=[ 68682], 95.00th=[ 82314], | 99.00th=[120062], 99.50th=[141558], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 94, max= 415, per=23.98%, avg=227.86, stdev=81.02, samples=49 iops : min= 5, max= 25, avg=13.47, stdev= 5.10, samples=49 write: IOPS=16, BW=261KiB/s (267kB/s)(6544KiB/25089msec); 0 zone resets clat (usec): min=1386, max=175613, avg=30102.44, stdev=30807.28 lat (usec): min=1388, max=175616, avg=30104.57, stdev=30807.25 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 1893], 10.00th=[ 2442], 20.00th=[ 4424], | 30.00th=[ 7373], 40.00th=[ 10945], 50.00th=[ 19530], 60.00th=[ 29754], | 70.00th=[ 40109], 80.00th=[ 52691], 90.00th=[ 73925], 95.00th=[ 93848], | 99.00th=[124257], 99.50th=[132645], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 30, max= 569, per=25.97%, avg=259.45, stdev=106.49, samples=49 iops : min= 1, max= 35, avg=15.47, stdev= 6.72, samples=49 lat (usec) : 50=0.65%, 100=8.72%, 250=0.39%, 500=0.26% lat (msec) : 2=3.39%, 4=5.60%, 10=11.72%, 20=9.38%, 50=35.29% lat (msec) : 100=20.83%, 250=3.78% cpu : usr=0.08%, sys=6.49%, ctx=1460, 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=144784: Wed Aug 19 02:06:44 2026 read: IOPS=15, BW=249KiB/s (255kB/s)(6256KiB/25092msec) clat (usec): min=38, max=164047, avg=34232.69, stdev=29092.10 lat (usec): min=38, max=164048, avg=34243.99, stdev=29109.20 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 54], 10.00th=[ 62], 20.00th=[ 89], | 30.00th=[ 19006], 40.00th=[ 26346], 50.00th=[ 31589], 60.00th=[ 38536], | 70.00th=[ 44303], 80.00th=[ 54264], 90.00th=[ 72877], 95.00th=[ 84411], | 99.00th=[120062], 99.50th=[147850], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 125, max= 474, per=26.93%, avg=255.79, stdev=79.82, samples=48 iops : min= 7, max= 29, avg=15.25, stdev= 5.07, samples=48 write: IOPS=15, BW=240KiB/s (246kB/s)(6032KiB/25092msec); 0 zone resets clat (usec): min=1398, max=179328, avg=30074.86, stdev=31252.61 lat (usec): min=1400, max=179331, avg=30077.22, stdev=31252.60 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1893], 10.00th=[ 2147], 20.00th=[ 5080], | 30.00th=[ 8717], 40.00th=[ 12256], 50.00th=[ 17695], 60.00th=[ 28181], | 70.00th=[ 39584], 80.00th=[ 50594], 90.00th=[ 73925], 95.00th=[ 95945], | 99.00th=[139461], 99.50th=[164627], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 30, max= 409, per=23.87%, avg=238.49, stdev=85.15, samples=49 iops : min= 1, max= 25, avg=14.14, stdev= 5.37, samples=49 lat (usec) : 50=1.82%, 100=8.98%, 250=1.69%, 500=0.13% lat (msec) : 2=3.91%, 4=4.82%, 10=8.98%, 20=11.59%, 50=34.77% lat (msec) : 100=20.05%, 250=3.26% cpu : usr=0.09%, sys=6.08%, ctx=1448, 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=144787: Wed Aug 19 02:06:44 2026 read: IOPS=15, BW=248KiB/s (254kB/s)(6032KiB/24349msec) clat (usec): min=34, max=140592, avg=32727.85, stdev=28281.31 lat (usec): min=34, max=140594, avg=32729.06, stdev=28281.35 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 53], 10.00th=[ 60], 20.00th=[ 75], | 30.00th=[ 15008], 40.00th=[ 23725], 50.00th=[ 31065], 60.00th=[ 37487], | 70.00th=[ 43254], 80.00th=[ 56361], 90.00th=[ 72877], 95.00th=[ 87557], | 99.00th=[108528], 99.50th=[112722], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 157, max= 437, per=26.37%, avg=250.47, stdev=66.88, samples=47 iops : min= 9, max= 27, avg=14.89, stdev= 4.25, samples=47 write: IOPS=16, BW=257KiB/s (263kB/s)(6256KiB/24349msec); 0 zone resets clat (usec): min=1517, max=190138, avg=29791.23, stdev=30835.46 lat (usec): min=1518, max=190140, avg=29793.39, stdev=30835.51 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2040], 10.00th=[ 2671], 20.00th=[ 4424], | 30.00th=[ 7832], 40.00th=[ 11731], 50.00th=[ 18744], 60.00th=[ 27395], | 70.00th=[ 38011], 80.00th=[ 53216], 90.00th=[ 71828], 95.00th=[ 90702], | 99.00th=[137364], 99.50th=[166724], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 63, max= 410, per=25.74%, avg=257.17, stdev=80.60, samples=48 iops : min= 3, max= 25, avg=15.31, stdev= 5.07, samples=48 lat (usec) : 50=1.69%, 100=10.81%, 250=0.78%, 500=0.13%, 1000=0.13% lat (msec) : 2=2.21%, 4=6.90%, 10=10.29%, 20=9.51%, 50=34.38% lat (msec) : 100=20.83%, 250=2.34% cpu : usr=0.11%, sys=6.66%, ctx=1451, 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=950KiB/s (973kB/s), 229KiB/s-249KiB/s (234kB/s-255kB/s), io=23.4MiB (24.5MB), run=24349-25207msec WRITE: bw=1000KiB/s (1024kB/s), 240KiB/s-261KiB/s (246kB/s-267kB/s), io=24.6MiB (25.8MB), run=24349-25207msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144782: Wed Aug 19 02:07:19 2026 read: IOPS=6, BW=99.8KiB/s (102kB/s)(5920KiB/59317msec) clat (msec): min=6, max=207, avg=35.69, stdev=31.31 lat (msec): min=6, max=207, avg=35.69, stdev=31.31 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 46], 90.00th=[ 73], 95.00th=[ 96], | 99.00th=[ 167], 99.50th=[ 201], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 30, max= 288, per=25.81%, avg=103.77, stdev=60.48, samples=111 iops : min= 1, max= 18, avg= 5.75, stdev= 3.84, samples=111 write: IOPS=6, BW=107KiB/s (110kB/s)(6368KiB/59317msec); 0 zone resets clat (msec): min=34, max=392, avg=115.21, stdev=49.65 lat (msec): min=34, max=392, avg=115.21, stdev=49.65 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 77], | 30.00th=[ 85], 40.00th=[ 94], 50.00th=[ 103], 60.00th=[ 118], | 70.00th=[ 131], 80.00th=[ 148], 90.00th=[ 186], 95.00th=[ 218], | 99.00th=[ 275], 99.50th=[ 284], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 31, max= 224, per=25.35%, avg=107.22, stdev=45.31, samples=116 iops : min= 1, max= 14, avg= 5.96, stdev= 2.92, samples=116 lat (msec) : 10=2.21%, 20=14.19%, 50=24.74%, 100=29.43%, 250=28.65% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=1.62%, ctx=1295, 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=144785: Wed Aug 19 02:07:19 2026 read: IOPS=6, BW=96.5KiB/s (98.8kB/s)(5744KiB/59534msec) clat (msec): min=6, max=263, avg=35.39, stdev=34.07 lat (msec): min=6, max=263, avg=35.39, stdev=34.07 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 47], 90.00th=[ 80], 95.00th=[ 111], | 99.00th=[ 178], 99.50th=[ 207], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 31, max= 376, per=26.16%, avg=105.16, stdev=73.91, samples=108 iops : min= 1, max= 23, avg= 5.82, stdev= 4.69, samples=108 write: IOPS=6, BW=110KiB/s (113kB/s)(6544KiB/59534msec); 0 zone resets clat (msec): min=29, max=318, avg=113.79, stdev=51.69 lat (msec): min=29, max=318, avg=113.79, stdev=51.69 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 73], | 30.00th=[ 82], 40.00th=[ 92], 50.00th=[ 101], 60.00th=[ 112], | 70.00th=[ 133], 80.00th=[ 150], 90.00th=[ 186], 95.00th=[ 213], | 99.00th=[ 279], 99.50th=[ 296], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 31, max= 255, per=26.26%, avg=111.07, stdev=46.78, samples=116 iops : min= 1, max= 15, avg= 6.20, stdev= 3.02, samples=116 lat (msec) : 10=2.47%, 20=16.02%, 50=21.35%, 100=30.86%, 250=27.60% lat (msec) : 500=1.69% cpu : usr=0.05%, sys=1.54%, ctx=1416, 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=144786: Wed Aug 19 02:07:19 2026 read: IOPS=6, BW=109KiB/s (112kB/s)(6256KiB/57339msec) clat (msec): min=6, max=206, avg=32.94, stdev=29.92 lat (msec): min=6, max=206, avg=32.94, stdev=29.92 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 26], | 70.00th=[ 34], 80.00th=[ 42], 90.00th=[ 69], 95.00th=[ 92], | 99.00th=[ 190], 99.50th=[ 203], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 31, max= 320, per=29.62%, avg=119.09, stdev=79.15, samples=104 iops : min= 1, max= 20, avg= 6.69, stdev= 5.01, samples=104 write: IOPS=6, BW=105KiB/s (108kB/s)(6032KiB/57339msec); 0 zone resets clat (msec): min=36, max=402, avg=117.17, stdev=55.77 lat (msec): min=36, max=402, avg=117.17, stdev=55.77 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 75], | 30.00th=[ 83], 40.00th=[ 92], 50.00th=[ 101], 60.00th=[ 116], | 70.00th=[ 133], 80.00th=[ 157], 90.00th=[ 192], 95.00th=[ 220], | 99.00th=[ 317], 99.50th=[ 351], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 30, max= 192, per=24.69%, avg=104.45, stdev=47.07, samples=113 iops : min= 1, max= 12, avg= 5.77, stdev= 3.02, samples=113 lat (msec) : 10=2.21%, 20=17.45%, 50=24.48%, 100=28.78%, 250=25.39% lat (msec) : 500=1.69% cpu : usr=0.03%, sys=1.76%, ctx=1447, 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=144788: Wed Aug 19 02:07:19 2026 read: IOPS=6, BW=104KiB/s (107kB/s)(6032KiB/57810msec) clat (msec): min=6, max=262, avg=34.14, stdev=33.91 lat (msec): min=6, max=262, avg=34.15, stdev=33.92 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 22], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 44], 90.00th=[ 69], 95.00th=[ 102], | 99.00th=[ 171], 99.50th=[ 209], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 31, max= 319, per=27.54%, avg=110.72, stdev=66.40, samples=106 iops : min= 1, max= 19, avg= 6.15, stdev= 4.18, samples=106 write: IOPS=6, BW=108KiB/s (111kB/s)(6256KiB/57810msec); 0 zone resets clat (msec): min=39, max=336, avg=114.84, stdev=50.80 lat (msec): min=39, max=336, avg=114.84, stdev=50.79 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 74], | 30.00th=[ 82], 40.00th=[ 92], 50.00th=[ 101], 60.00th=[ 115], | 70.00th=[ 131], 80.00th=[ 150], 90.00th=[ 186], 95.00th=[ 211], | 99.00th=[ 292], 99.50th=[ 330], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 31, max= 223, per=25.62%, avg=108.35, stdev=47.46, samples=113 iops : min= 1, max= 13, avg= 6.02, stdev= 3.07, samples=113 lat (msec) : 10=2.60%, 20=18.10%, 50=21.61%, 100=29.95%, 250=26.56% lat (msec) : 500=1.17% cpu : usr=0.04%, sys=1.55%, ctx=1351, 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 (412kB/s), 96.5KiB/s-109KiB/s (98.8kB/s-112kB/s), io=23.4MiB (24.5MB), run=57339-59534msec WRITE: bw=423KiB/s (433kB/s), 105KiB/s-110KiB/s (108kB/s-113kB/s), io=24.6MiB (25.8MB), run=57339-59534msec 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=144802: Wed Aug 19 02:07:35 2026 read: IOPS=1, BW=1576KiB/s (1614kB/s)(7168KiB/4548msec) clat (usec): min=533, max=270823, avg=118707.59, stdev=114614.08 lat (usec): min=535, max=270824, avg=118709.36, stdev=114614.20 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 578], | 30.00th=[ 586], 40.00th=[ 586], 50.00th=[175113], 60.00th=[189793], | 70.00th=[189793], 80.00th=[191890], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 2031, max= 6011, per=100.00%, avg=3596.67, stdev=2121.39, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=1, BW=1126KiB/s (1153kB/s)(5120KiB/4548msec); 0 zone resets clat (msec): min=207, max=2633, avg=704.46, stdev=1078.46 lat (msec): min=207, max=2633, avg=704.52, stdev=1078.43 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 209], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 224], 60.00th=[ 224], | 70.00th=[ 245], 80.00th=[ 245], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 2003, max= 3799, per=63.82%, avg=2611.00, stdev=1028.93, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=25.00% lat (msec) : 250=58.33%, 500=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.96%, ctx=174, 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=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=144803: Wed Aug 19 02:07:35 2026 read: IOPS=0, BW=292KiB/s (299kB/s)(2048KiB/7007msec) clat (msec): min=181, max=185, avg=183.40, stdev= 2.57 lat (msec): min=181, max=185, avg=183.40, stdev= 2.57 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 186], | 70.00th=[ 186], 80.00th=[ 186], 90.00th=[ 186], 95.00th=[ 186], | 99.00th=[ 186], 99.50th=[ 186], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 1428, max= 2015, per=58.92%, avg=1721.50, stdev=415.07, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1461KiB/s (1496kB/s)(10.0MiB/7007msec); 0 zone resets clat (msec): min=216, max=3225, avg=647.30, stdev=913.09 lat (msec): min=216, max=3225, avg=647.78, stdev=912.97 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 230], | 30.00th=[ 236], 40.00th=[ 334], 50.00th=[ 351], 60.00th=[ 397], | 70.00th=[ 447], 80.00th=[ 464], 90.00th=[ 575], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 1899, max= 4087, per=63.08%, avg=2580.43, stdev=1019.19, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.22%, ctx=179, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144804: Wed Aug 19 02:07:35 2026 read: IOPS=1, BW=1294KiB/s (1325kB/s)(6144KiB/4749msec) clat (usec): min=524, max=2581.7k, avg=529207.20, stdev=1010845.28 lat (usec): min=526, max=2581.7k, avg=529208.53, stdev=1010845.04 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], | 20.00th=[ 979], 30.00th=[ 979], 40.00th=[ 160433], | 50.00th=[ 160433], 60.00th=[ 162530], 70.00th=[ 270533], | 80.00th=[ 270533], 90.00th=[2566915], 95.00th=[2566915], | 99.00th=[2566915], 99.50th=[2566915], 99.90th=[2566915], | 99.95th=[2566915], 99.99th=[2566915] bw ( KiB/s): min= 3813, max= 4071, per=100.00%, avg=3942.00, stdev=182.43, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1294KiB/s (1325kB/s)(6144KiB/4749msec); 0 zone resets clat (msec): min=61, max=582, avg=253.01, stdev=191.77 lat (msec): min=61, max=582, avg=253.08, stdev=191.79 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 109], | 30.00th=[ 109], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 292], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1906, max= 3946, per=64.17%, avg=2625.00, stdev=1145.51, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.58%, ctx=541, 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=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=144806: Wed Aug 19 02:07:35 2026 read: IOPS=2, BW=2340KiB/s (2396kB/s)(5120KiB/2188msec) clat (usec): min=816, max=134058, avg=54238.14, stdev=72280.10 lat (usec): min=817, max=134059, avg=54239.21, stdev=72280.26 clat percentiles (usec): | 1.00th=[ 816], 5.00th=[ 816], 10.00th=[ 816], 20.00th=[ 816], | 30.00th=[ 1270], 40.00th=[ 1270], 50.00th=[ 2278], 60.00th=[ 2278], | 70.00th=[132645], 80.00th=[132645], 90.00th=[133694], 95.00th=[133694], | 99.00th=[133694], 99.50th=[133694], 99.90th=[133694], 99.95th=[133694], | 99.99th=[133694] write: IOPS=3, BW=3276KiB/s (3355kB/s)(7168KiB/2188msec); 0 zone resets clat (msec): min=46, max=526, avg=245.16, stdev=186.00 lat (msec): min=46, max=526, avg=245.29, stdev=185.95 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 72], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 203], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 451], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 1444, max= 3799, per=59.04%, avg=2415.33, stdev=1230.46, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 4=8.33%, 50=8.33%, 100=8.33%, 250=33.33% lat (msec) : 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=14.40%, ctx=92, 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=2923KiB/s (2993kB/s), 292KiB/s-2340KiB/s (299kB/s-2396kB/s), io=20.0MiB (20.0MB), run=2188-7007msec WRITE: bw=4092KiB/s (4190kB/s), 1126KiB/s-3276KiB/s (1153kB/s-3355kB/s), io=28.0MiB (29.4MB), run=2188-7007msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144805: Wed Aug 19 02:07:36 2026 read: IOPS=1, BW=1048KiB/s (1073kB/s)(7168KiB/6838msec) clat (msec): min=72, max=811, avg=238.74, stdev=261.55 lat (msec): min=72, max=811, avg=238.74, stdev=261.55 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 91], | 30.00th=[ 102], 40.00th=[ 102], 50.00th=[ 129], 60.00th=[ 209], | 70.00th=[ 209], 80.00th=[ 257], 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= 1450, max= 4079, per=100.00%, avg=2821.25, stdev=1283.80, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=749KiB/s (767kB/s)(5120KiB/6838msec); 0 zone resets clat (msec): min=194, max=3167, avg=945.15, stdev=1257.38 lat (msec): min=194, max=3167, avg=945.25, stdev=1257.37 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 330], 60.00th=[ 330], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 3171], 95.00th=[ 3171], | 99.00th=[ 3171], 99.50th=[ 3171], 99.90th=[ 3171], 99.95th=[ 3171], | 99.99th=[ 3171] bw ( KiB/s): min= 2019, max= 2048, per=52.89%, avg=2033.60, stdev=13.70, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.46%, ctx=151, 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=144807: Wed Aug 19 02:07:36 2026 read: IOPS=0, BW=297KiB/s (304kB/s)(2048KiB/6896msec) clat (msec): min=93, max=206, avg=150.03, stdev=79.32 lat (msec): min=93, max=206, avg=150.03, stdev=79.32 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 94], | 30.00th=[ 94], 40.00th=[ 94], 50.00th=[ 94], 60.00th=[ 207], | 70.00th=[ 207], 80.00th=[ 207], 90.00th=[ 207], 95.00th=[ 207], | 99.00th=[ 207], 99.50th=[ 207], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 1424, max= 2039, per=63.06%, avg=1731.50, stdev=434.87, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1485KiB/s (1521kB/s)(10.0MiB/6896msec); 0 zone resets clat (msec): min=212, max=3221, avg=655.95, stdev=913.47 lat (msec): min=212, max=3221, avg=656.05, stdev=913.46 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 220], | 30.00th=[ 239], 40.00th=[ 247], 50.00th=[ 296], 60.00th=[ 489], | 70.00th=[ 510], 80.00th=[ 542], 90.00th=[ 584], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 1424, max= 4087, per=57.04%, avg=2193.38, stdev=793.91, samples=8 iops : min= 1, max= 3, avg= 1.38, stdev= 0.74, samples=8 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=2.63%, ctx=74, 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=144808: Wed Aug 19 02:07:36 2026 read: IOPS=0, BW=920KiB/s (942kB/s)(6144KiB/6681msec) clat (msec): min=104, max=3316, avg=682.50, stdev=1290.97 lat (msec): min=104, max=3316, avg=682.51, stdev=1290.97 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 129], | 30.00th=[ 129], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 180], | 70.00th=[ 205], 80.00th=[ 205], 90.00th=[ 3306], 95.00th=[ 3306], | 99.00th=[ 3306], 99.50th=[ 3306], 99.90th=[ 3306], 99.95th=[ 3306], | 99.99th=[ 3306] bw ( KiB/s): min= 2019, max= 4063, per=100.00%, avg=3373.67, stdev=1173.24, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=920KiB/s (942kB/s)(6144KiB/6681msec); 0 zone resets clat (msec): min=138, max=762, avg=393.76, stdev=216.71 lat (msec): min=139, max=762, avg=394.29, stdev=216.46 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 397], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 1426, max= 2043, per=48.83%, avg=1877.40, stdev=262.16, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=58.33%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=1.98%, ctx=74, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144809: Wed Aug 19 02:07:36 2026 read: IOPS=0, BW=687KiB/s (703kB/s)(5120KiB/7456msec) clat (msec): min=50, max=234, avg=164.39, stdev=70.17 lat (msec): min=50, max=234, avg=164.39, stdev=70.17 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 51], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 178], 60.00th=[ 178], | 70.00th=[ 203], 80.00th=[ 203], 90.00th=[ 236], 95.00th=[ 236], | 99.00th=[ 236], 99.50th=[ 236], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 2048, max= 6059, per=100.00%, avg=4053.50, stdev=2836.21, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=0, BW=961KiB/s (984kB/s)(7168KiB/7456msec); 0 zone resets clat (msec): min=177, max=3514, avg=908.68, stdev=1174.15 lat (msec): min=177, max=3515, avg=909.03, stdev=1174.51 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 317], | 30.00th=[ 384], 40.00th=[ 384], 50.00th=[ 388], 60.00th=[ 676], | 70.00th=[ 676], 80.00th=[ 902], 90.00th=[ 3507], 95.00th=[ 3507], | 99.00th=[ 3507], 99.50th=[ 3507], 99.90th=[ 3507], 99.95th=[ 3507], | 99.99th=[ 3507] bw ( KiB/s): min= 2031, max= 4096, per=79.38%, avg=3052.25, stdev=1172.55, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.07%, ctx=82, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2747KiB/s (2813kB/s), 297KiB/s-1048KiB/s (304kB/s-1073kB/s), io=20.0MiB (20.0MB), run=6681-7456msec WRITE: bw=3845KiB/s (3938kB/s), 749KiB/s-1485KiB/s (767kB/s-1521kB/s), io=28.0MiB (29.4MB), run=6681-7456msec 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=144817: Wed Aug 19 02:07:51 2026 read: IOPS=0, BW=3966KiB/s (4062kB/s)(12.0MiB/3098msec) clat (msec): min=880, max=1102, avg=1000.75, stdev=112.44 lat (msec): min=880, max=1102, avg=1000.76, stdev=112.44 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1020], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8126, max= 8175, per=100.00%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=10.85%, ctx=229, 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=144819: Wed Aug 19 02:07:51 2026 read: IOPS=0, BW=1100KiB/s (1126kB/s)(4096KiB/3725msec) clat (nsec): min=1020.8M, max=1020.8M, avg=1020835515.00, stdev= 0.00 lat (nsec): min=1020.8M, max=1020.8M, avg=1020837742.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1020], 5.00th=[ 1020], 10.00th=[ 1020], 20.00th=[ 1020], | 30.00th=[ 1020], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1020], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2199KiB/s (2252kB/s)(8192KiB/3725msec); 0 zone resets clat (msec): min=784, max=1780, avg=1282.60, stdev=704.43 lat (msec): min=786, max=1781, avg=1283.63, stdev=703.67 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 1787], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 8094, max= 8094, per=92.02%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.86%, ctx=111, 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=144821: Wed Aug 19 02:07:51 2026 write: IOPS=0, BW=3760KiB/s (3850kB/s)(12.0MiB/3268msec); 0 zone resets clat (msec): min=956, max=1140, avg=1054.10, stdev=92.74 lat (msec): min=962, max=1141, avg=1056.41, stdev=89.85 clat percentiles (msec): | 1.00th=[ 953], 5.00th=[ 953], 10.00th=[ 953], 20.00th=[ 953], | 30.00th=[ 953], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 1070], | 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= 8159, per=91.76%, avg=8071.50, stdev=123.74, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=6.58%, ctx=98, 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=144823: Wed Aug 19 02:07:51 2026 write: IOPS=0, BW=4033KiB/s (4130kB/s)(12.0MiB/3047msec); 0 zone resets clat (msec): min=743, max=1322, avg=956.63, stdev=318.35 lat (msec): min=744, max=1323, avg=957.67, stdev=317.99 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8062, max= 8094, per=91.84%, avg=8078.00, stdev=22.63, 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=0.03%, sys=2.82%, ctx=62, 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=4398KiB/s (4504kB/s), 1100KiB/s-3966KiB/s (1126kB/s-4062kB/s), io=16.0MiB (16.8MB), run=3098-3725msec WRITE: bw=8797KiB/s (9008kB/s), 2199KiB/s-4033KiB/s (2252kB/s-4130kB/s), io=32.0MiB (33.6MB), run=3047-3725msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144818: Wed Aug 19 02:07:53 2026 read: IOPS=0, BW=2945KiB/s (3016kB/s)(12.0MiB/4172msec) clat (msec): min=997, max=1774, avg=1369.44, stdev=389.90 lat (msec): min=997, max=1774, avg=1369.45, stdev=389.90 clat percentiles (msec): | 1.00th=[ 995], 5.00th=[ 995], 10.00th=[ 995], 20.00th=[ 995], | 30.00th=[ 995], 40.00th=[ 1334], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8126, max= 8192, per=100.00%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.25%, ctx=40, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144820: Wed Aug 19 02:07:53 2026 read: IOPS=0, BW=925KiB/s (947kB/s)(4096KiB/4429msec) clat (nsec): min=1701.2M, max=1701.2M, avg=1701180143.00, stdev= 0.00 lat (nsec): min=1701.2M, max=1701.2M, avg=1701182931.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1703], 5.00th=[ 1703], 10.00th=[ 1703], 20.00th=[ 1703], | 30.00th=[ 1703], 40.00th=[ 1703], 50.00th=[ 1703], 60.00th=[ 1703], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1850KiB/s (1894kB/s)(8192KiB/4429msec); 0 zone resets clat (msec): min=744, max=1884, avg=1314.63, stdev=805.86 lat (msec): min=749, max=1884, avg=1317.09, stdev=802.92 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 1888], | 70.00th=[ 1888], 80.00th=[ 1888], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 7699, max= 7699, per=100.00%, avg=7699.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.26%, ctx=49, 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=144822: Wed Aug 19 02:07:53 2026 write: IOPS=0, BW=2733KiB/s (2799kB/s)(12.0MiB/4496msec); 0 zone resets clat (msec): min=349, max=2481, avg=1480.14, stdev=1071.60 lat (msec): min=350, max=2481, avg=1480.58, stdev=1071.57 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 1603], 50.00th=[ 1603], 60.00th=[ 1603], | 70.00th=[ 2467], 80.00th=[ 2467], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] 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) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.67%, ctx=41, 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=144824: Wed Aug 19 02:07:53 2026 write: IOPS=0, BW=3732KiB/s (3821kB/s)(12.0MiB/3293msec); 0 zone resets clat (msec): min=336, max=1604, avg=1063.70, stdev=653.93 lat (msec): min=345, max=1609, avg=1068.29, stdev=651.37 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 8062, max= 8192, per=100.00%, avg=8127.00, stdev=91.92, 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=0.00%, sys=2.86%, ctx=42, 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=3699KiB/s (3788kB/s), 925KiB/s-2945KiB/s (947kB/s-3016kB/s), io=16.0MiB (16.8MB), run=4172-4429msec WRITE: bw=7288KiB/s (7463kB/s), 1850KiB/s-3732KiB/s (1894kB/s-3821kB/s), io=32.0MiB (33.6MB), run=3293-4496msec