== sanity test 398b: DIO and buffer IO race ============== 20:44:20 (1787791460) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.79738 s, 10.5 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=180581: Wed Aug 26 20:46:04 2026 read: IOPS=16, BW=66.4KiB/s (67.0kB/s)(5992KiB/90241msec) clat (usec): min=41, max=143105, avg=32293.20, stdev=19841.66 lat (usec): min=41, max=143106, avg=32294.55, stdev=19841.50 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 9110], 10.00th=[ 12518], 20.00th=[ 16909], | 30.00th=[ 20317], 40.00th=[ 24249], 50.00th=[ 28705], 60.00th=[ 33817], | 70.00th=[ 39060], 80.00th=[ 45876], 90.00th=[ 55837], 95.00th=[ 68682], | 99.00th=[101188], 99.50th=[115868], 99.90th=[135267], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 23, max= 127, per=24.78%, avg=65.92, stdev=20.88, samples=177 iops : min= 5, max= 31, avg=15.92, stdev= 5.25, samples=177 write: IOPS=17, BW=69.8KiB/s (71.4kB/s)(6296KiB/90241msec); 0 zone resets clat (usec): min=962, max=766175, avg=26383.98, stdev=31685.42 lat (usec): min=964, max=766176, avg=26386.02, stdev=31685.11 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1287], 10.00th=[ 1795], 20.00th=[ 3163], | 30.00th=[ 5997], 40.00th=[ 12911], 50.00th=[ 19268], 60.00th=[ 25822], | 70.00th=[ 33424], 80.00th=[ 44827], 90.00th=[ 61604], 95.00th=[ 76022], | 99.00th=[113771], 99.50th=[125305], 99.90th=[193987], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 15, max= 160, per=24.86%, avg=69.12, stdev=24.95, samples=177 iops : min= 3, max= 40, avg=16.71, stdev= 6.27, samples=177 lat (usec) : 50=0.16%, 100=1.37%, 250=0.26%, 500=0.03%, 1000=0.13% lat (msec) : 2=6.02%, 4=6.38%, 10=6.80%, 20=19.40%, 50=43.65% lat (msec) : 100=14.32%, 250=1.43%, 1000=0.03% cpu : usr=0.09%, sys=7.70%, ctx=6889, 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=180582: Wed Aug 26 20:46:04 2026 read: IOPS=16, BW=67.7KiB/s (69.3kB/s)(5940KiB/87761msec) clat (usec): min=43, max=170071, avg=32010.88, stdev=19269.70 lat (usec): min=44, max=170072, avg=32012.66, stdev=19269.63 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 9634], 10.00th=[ 13042], 20.00th=[ 17171], | 30.00th=[ 20317], 40.00th=[ 24249], 50.00th=[ 28443], 60.00th=[ 32900], | 70.00th=[ 38011], 80.00th=[ 44827], 90.00th=[ 56886], 95.00th=[ 67634], | 99.00th=[ 92799], 99.50th=[108528], 99.90th=[137364], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 15, max= 151, per=25.41%, avg=67.58, stdev=20.65, samples=173 iops : min= 3, max= 37, avg=16.33, stdev= 5.25, samples=173 write: IOPS=18, BW=72.3KiB/s (74.1kB/s)(6348KiB/87761msec); 0 zone resets clat (usec): min=969, max=777256, avg=25126.74, stdev=32059.68 lat (usec): min=970, max=777257, avg=25131.54, stdev=32060.48 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1352], 10.00th=[ 1762], 20.00th=[ 3195], | 30.00th=[ 5473], 40.00th=[ 12125], 50.00th=[ 18220], 60.00th=[ 23462], | 70.00th=[ 30802], 80.00th=[ 40633], 90.00th=[ 58983], 95.00th=[ 73925], | 99.00th=[116917], 99.50th=[145753], 99.90th=[238027], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 7, max= 151, per=25.99%, avg=72.26, stdev=27.11, samples=173 iops : min= 1, max= 37, avg=17.50, stdev= 6.78, samples=173 lat (usec) : 50=0.23%, 100=1.20%, 250=0.26%, 1000=0.03% lat (msec) : 2=6.02%, 4=6.38%, 10=7.91%, 20=19.43%, 50=43.88% lat (msec) : 100=13.51%, 250=1.11%, 1000=0.03% cpu : usr=0.09%, sys=7.78%, ctx=6763, 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=180583: Wed Aug 26 20:46:04 2026 read: IOPS=16, BW=67.6KiB/s (69.2kB/s)(6028KiB/89136msec) clat (usec): min=41, max=792218, avg=32326.52, stdev=28528.41 lat (usec): min=41, max=792220, avg=32329.36, stdev=28527.80 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 8225], 10.00th=[ 12911], 20.00th=[ 17171], | 30.00th=[ 20317], 40.00th=[ 23725], 50.00th=[ 27657], 60.00th=[ 32375], | 70.00th=[ 36963], 80.00th=[ 45351], 90.00th=[ 55313], 95.00th=[ 67634], | 99.00th=[104334], 99.50th=[143655], 99.90th=[231736], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 15, max= 135, per=25.32%, avg=67.36, stdev=22.47, samples=175 iops : min= 3, max= 33, avg=16.27, stdev= 5.64, samples=175 write: IOPS=17, BW=70.2KiB/s (71.9kB/s)(6260KiB/89136msec); 0 zone resets clat (usec): min=914, max=218849, avg=25614.22, stdev=25800.19 lat (usec): min=915, max=218852, avg=25615.88, stdev=25800.24 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1287], 10.00th=[ 1729], 20.00th=[ 3097], | 30.00th=[ 5997], 40.00th=[ 13042], 50.00th=[ 19006], 60.00th=[ 24773], | 70.00th=[ 33424], 80.00th=[ 43779], 90.00th=[ 60031], 95.00th=[ 74974], | 99.00th=[106431], 99.50th=[120062], 99.90th=[208667], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 7, max= 159, per=25.15%, avg=69.91, stdev=24.69, samples=175 iops : min= 1, max= 39, avg=16.91, stdev= 6.25, samples=175 lat (usec) : 50=0.26%, 100=1.27%, 250=0.29%, 500=0.07%, 1000=0.10% lat (msec) : 2=6.22%, 4=5.89%, 10=7.65%, 20=19.43%, 50=43.46% lat (msec) : 100=13.96%, 250=1.37%, 1000=0.03% cpu : usr=0.08%, sys=7.49%, ctx=6751, 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=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=180584: Wed Aug 26 20:46:04 2026 read: IOPS=16, BW=67.1KiB/s (68.7kB/s)(6052KiB/90176msec) clat (usec): min=34, max=143685, avg=32231.69, stdev=19876.62 lat (usec): min=34, max=143686, avg=32239.42, stdev=19879.30 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 7570], 10.00th=[ 12256], 20.00th=[ 16909], | 30.00th=[ 21103], 40.00th=[ 25035], 50.00th=[ 28705], 60.00th=[ 32900], | 70.00th=[ 38536], 80.00th=[ 45351], 90.00th=[ 55837], 95.00th=[ 69731], | 99.00th=[102237], 99.50th=[114820], 99.90th=[139461], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 15, max= 126, per=25.01%, avg=66.53, stdev=21.32, samples=178 iops : min= 3, max= 31, avg=16.07, stdev= 5.37, samples=178 write: IOPS=17, BW=69.2KiB/s (70.8kB/s)(6236KiB/90176msec); 0 zone resets clat (usec): min=947, max=690695, avg=26343.24, stdev=30192.05 lat (usec): min=949, max=690696, avg=26344.84, stdev=30192.03 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1287], 10.00th=[ 1811], 20.00th=[ 3425], | 30.00th=[ 6456], 40.00th=[ 14091], 50.00th=[ 19792], 60.00th=[ 25560], | 70.00th=[ 33162], 80.00th=[ 44827], 90.00th=[ 61604], 95.00th=[ 76022], | 99.00th=[110625], 99.50th=[128451], 99.90th=[166724], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 7, max= 144, per=24.79%, avg=68.90, stdev=23.84, samples=177 iops : min= 1, max= 36, avg=16.66, stdev= 6.04, samples=177 lat (usec) : 50=0.33%, 100=1.40%, 250=0.29%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.83%, 4=5.60%, 10=7.78%, 20=17.64%, 50=45.25% lat (msec) : 100=14.42%, 250=1.27%, 750=0.03% cpu : usr=0.09%, sys=7.54%, ctx=6953, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=266KiB/s (272kB/s), 66.4KiB/s-67.7KiB/s (67.0kB/s-69.3kB/s), io=23.4MiB (24.6MB), run=87761-90241msec WRITE: bw=279KiB/s (285kB/s), 69.2KiB/s-72.3KiB/s (70.8kB/s-74.1kB/s), io=24.6MiB (25.7MB), run=87761-90241msec fio: pid=180588, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=180587: Wed Aug 26 20:46:32 2026 read: IOPS=12, BW=51.1KiB/s (52.3kB/s)(5992KiB/117360msec) clat (msec): min=4, max=804, avg=30.25, stdev=33.45 lat (msec): min=4, max=804, avg=30.26, stdev=33.45 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 43], 90.00th=[ 65], 95.00th=[ 83], | 99.00th=[ 134], 99.50th=[ 169], 99.90th=[ 255], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 167, per=25.27%, avg=51.05, stdev=33.15, samples=229 iops : min= 1, max= 41, avg=12.14, stdev= 8.33, samples=229 write: IOPS=13, BW=53.6KiB/s (54.9kB/s)(6296KiB/117360msec); 0 zone resets clat (msec): min=10, max=254, avg=45.70, stdev=32.12 lat (msec): min=10, max=254, avg=45.70, stdev=32.12 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 54], 80.00th=[ 67], 90.00th=[ 87], 95.00th=[ 109], | 99.00th=[ 163], 99.50th=[ 197], 99.90th=[ 251], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 7, max= 144, per=25.22%, avg=53.22, stdev=31.03, samples=231 iops : min= 1, max= 36, avg=12.68, stdev= 7.78, samples=231 lat (msec) : 10=6.32%, 20=24.09%, 50=45.51%, 100=19.43%, 250=4.56% lat (msec) : 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=2.62%, ctx=4867, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=180588: Wed Aug 26 20:46:32 2026 read: IOPS=12, BW=49.9KiB/s (51.0kB/s)(5720KiB/114737msec) clat (msec): min=4, max=746, avg=31.77, stdev=32.94 lat (msec): min=4, max=746, avg=31.77, stdev=32.94 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 46], 90.00th=[ 69], 95.00th=[ 93], | 99.00th=[ 136], 99.50th=[ 142], 99.90th=[ 209], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 166, per=24.75%, avg=50.00, stdev=32.35, samples=224 iops : min= 1, max= 41, avg=11.88, stdev= 8.14, samples=224 write: IOPS=13, BW=52.5KiB/s (53.8kB/s)(6024KiB/114737msec); 0 zone resets clat (msec): min=7, max=268, avg=45.93, stdev=30.85 lat (msec): min=7, max=268, avg=45.94, stdev=30.85 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 54], 80.00th=[ 66], 90.00th=[ 84], 95.00th=[ 103], | 99.00th=[ 171], 99.50th=[ 188], 99.90th=[ 245], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 7, max= 151, per=24.72%, avg=52.16, stdev=28.95, samples=226 iops : min= 1, max= 37, avg=12.42, stdev= 7.26, samples=226 lat (msec) : 10=5.14%, 20=23.94%, 50=45.25%, 100=21.08%, 250=4.49% lat (msec) : 500=0.03%, 750=0.03% cpu : usr=0.06%, sys=2.58%, ctx=4660, 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=1431,1506,0,0 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=180589: Wed Aug 26 20:46:32 2026 read: IOPS=12, BW=51.3KiB/s (52.6kB/s)(6028KiB/117426msec) clat (msec): min=4, max=258, avg=30.89, stdev=27.84 lat (msec): min=4, max=258, avg=30.89, stdev=27.84 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 45], 90.00th=[ 68], 95.00th=[ 89], | 99.00th=[ 131], 99.50th=[ 167], 99.90th=[ 228], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 7, max= 166, per=25.39%, avg=51.29, stdev=31.76, samples=231 iops : min= 1, max= 41, avg=12.20, stdev= 7.98, samples=231 write: IOPS=13, BW=53.3KiB/s (54.6kB/s)(6260KiB/117426msec); 0 zone resets clat (msec): min=8, max=798, avg=45.22, stdev=36.80 lat (msec): min=8, max=798, avg=45.22, stdev=36.80 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 52], 80.00th=[ 66], 90.00th=[ 86], 95.00th=[ 105], | 99.00th=[ 161], 99.50th=[ 201], 99.90th=[ 264], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 8, max= 143, per=25.24%, avg=53.25, stdev=31.15, samples=231 iops : min= 2, max= 35, avg=12.69, stdev= 7.83, samples=231 lat (msec) : 10=5.53%, 20=25.23%, 50=45.25%, 100=19.17%, 250=4.69% lat (msec) : 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=2.63%, ctx=4897, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180590: Wed Aug 26 20:46:32 2026 read: IOPS=12, BW=51.5KiB/s (52.7kB/s)(6052KiB/117579msec) clat (msec): min=4, max=219, avg=30.03, stdev=25.96 lat (msec): min=4, max=219, avg=30.03, stdev=25.96 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 44], 90.00th=[ 66], 95.00th=[ 86], | 99.00th=[ 124], 99.50th=[ 136], 99.90th=[ 199], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 7, max= 166, per=25.53%, avg=51.57, stdev=31.94, samples=230 iops : min= 1, max= 41, avg=12.27, stdev= 8.03, samples=230 write: IOPS=13, BW=53.0KiB/s (54.3kB/s)(6236KiB/117579msec); 0 zone resets clat (msec): min=9, max=807, avg=46.21, stdev=35.81 lat (msec): min=9, max=807, avg=46.21, stdev=35.81 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 54], 80.00th=[ 67], 90.00th=[ 86], 95.00th=[ 105], | 99.00th=[ 148], 99.50th=[ 182], 99.90th=[ 255], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 159, per=25.08%, avg=52.91, stdev=30.02, samples=231 iops : min= 1, max= 39, avg=12.61, stdev= 7.55, samples=231 lat (msec) : 10=5.92%, 20=25.29%, 50=44.04%, 100=20.67%, 250=4.00% lat (msec) : 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=2.62%, ctx=4855, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=202KiB/s (207kB/s), 49.9KiB/s-51.5KiB/s (51.0kB/s-52.7kB/s), io=23.2MiB (24.4MB), run=114737-117579msec WRITE: bw=211KiB/s (216kB/s), 52.5KiB/s-53.6KiB/s (53.8kB/s-54.9kB/s), io=24.2MiB (25.4MB), run=114737-117579msec 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=180627: Wed Aug 26 20:47:00 2026 read: IOPS=18, BW=291KiB/s (298kB/s)(5920KiB/20335msec) clat (usec): min=47, max=112482, avg=28826.37, stdev=16550.25 lat (usec): min=48, max=112483, avg=28827.35, stdev=16550.25 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 119], 10.00th=[ 13042], 20.00th=[ 16909], | 30.00th=[ 19006], 40.00th=[ 21627], 50.00th=[ 25822], 60.00th=[ 30016], | 70.00th=[ 34866], 80.00th=[ 40109], 90.00th=[ 48497], 95.00th=[ 60556], | 99.00th=[ 83362], 99.50th=[ 98042], 99.90th=[112722], 99.95th=[112722], | 99.99th=[112722] bw ( KiB/s): min= 128, max= 512, per=25.68%, avg=289.15, stdev=91.56, samples=40 iops : min= 8, max= 32, avg=17.38, stdev= 5.78, samples=40 write: IOPS=19, BW=313KiB/s (321kB/s)(6368KiB/20335msec); 0 zone resets clat (usec): min=1703, max=121455, avg=24146.87, stdev=20900.72 lat (usec): min=1705, max=121457, avg=24148.98, stdev=20901.11 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 40], 90.00th=[ 55], 95.00th=[ 66], | 99.00th=[ 94], 99.50th=[ 120], 99.90th=[ 122], 99.95th=[ 122], | 99.99th=[ 122] bw ( KiB/s): min= 159, max= 570, per=26.45%, avg=313.22, stdev=101.78, samples=40 iops : min= 9, max= 35, avg=18.90, stdev= 6.36, samples=40 lat (usec) : 50=0.26%, 100=1.17%, 250=1.04%, 500=0.13%, 750=0.13% lat (msec) : 2=0.52%, 4=5.73%, 10=11.46%, 20=22.14%, 50=46.88% lat (msec) : 100=10.16%, 250=0.39% cpu : usr=0.11%, sys=11.40%, ctx=2030, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180628: Wed Aug 26 20:47:00 2026 read: IOPS=17, BW=281KiB/s (287kB/s)(5744KiB/20471msec) clat (usec): min=48, max=189597, avg=29181.93, stdev=18746.38 lat (usec): min=48, max=189598, avg=29182.86, stdev=18746.38 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 239], 10.00th=[ 13435], 20.00th=[ 17433], | 30.00th=[ 20317], 40.00th=[ 22938], 50.00th=[ 26346], 60.00th=[ 29230], | 70.00th=[ 34866], 80.00th=[ 38536], 90.00th=[ 46924], 95.00th=[ 55313], | 99.00th=[ 94897], 99.50th=[145753], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 54, max= 448, per=24.86%, avg=279.90, stdev=90.55, samples=40 iops : min= 3, max= 28, avg=16.80, stdev= 5.69, samples=40 write: IOPS=19, BW=320KiB/s (327kB/s)(6544KiB/20471msec); 0 zone resets clat (usec): min=1560, max=101264, avg=23994.58, stdev=20515.32 lat (usec): min=1562, max=101267, avg=23996.32, stdev=20515.35 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 6], | 30.00th=[ 9], 40.00th=[ 14], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 42], 90.00th=[ 55], 95.00th=[ 64], | 99.00th=[ 86], 99.50th=[ 89], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 159, max= 480, per=26.64%, avg=315.43, stdev=88.82, samples=40 iops : min= 9, max= 30, avg=19.03, stdev= 5.55, samples=40 lat (usec) : 50=0.26%, 100=1.56%, 250=0.52% lat (msec) : 2=0.65%, 4=5.34%, 10=12.37%, 20=21.74%, 50=46.48% lat (msec) : 100=10.55%, 250=0.52% cpu : usr=0.12%, sys=11.51%, ctx=2024, 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=180629: Wed Aug 26 20:47:00 2026 read: IOPS=18, BW=294KiB/s (301kB/s)(6256KiB/21271msec) clat (usec): min=49, max=108690, avg=29382.44, stdev=16659.56 lat (usec): min=50, max=108691, avg=29387.62, stdev=16658.51 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 111], 10.00th=[ 12518], 20.00th=[ 17171], | 30.00th=[ 20317], 40.00th=[ 23200], 50.00th=[ 26608], 60.00th=[ 31327], | 70.00th=[ 35914], 80.00th=[ 40633], 90.00th=[ 50594], 95.00th=[ 60556], | 99.00th=[ 82314], 99.50th=[ 98042], 99.90th=[108528], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 127, max= 480, per=26.19%, avg=294.90, stdev=80.99, samples=42 iops : min= 7, max= 30, avg=17.74, stdev= 5.17, samples=42 write: IOPS=17, BW=284KiB/s (290kB/s)(6032KiB/21271msec); 0 zone resets clat (usec): min=1516, max=129175, avg=25394.16, stdev=22575.85 lat (usec): min=1517, max=129177, avg=25396.81, stdev=22574.99 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2507], 10.00th=[ 3458], 20.00th=[ 5473], | 30.00th=[ 10028], 40.00th=[ 14484], 50.00th=[ 19006], 60.00th=[ 23987], | 70.00th=[ 30802], 80.00th=[ 42730], 90.00th=[ 58983], 95.00th=[ 72877], | 99.00th=[ 91751], 99.50th=[106431], 99.90th=[129500], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 95, max= 633, per=23.80%, avg=281.76, stdev=114.51, samples=42 iops : min= 5, max= 39, avg=16.93, stdev= 7.21, samples=42 lat (usec) : 50=0.13%, 100=2.08%, 250=0.78%, 500=0.26% lat (msec) : 2=1.69%, 4=5.60%, 10=7.94%, 20=21.48%, 50=47.53% lat (msec) : 100=12.11%, 250=0.39% cpu : usr=0.08%, sys=10.81%, ctx=2002, 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=180630: Wed Aug 26 20:47:00 2026 read: IOPS=18, BW=293KiB/s (300kB/s)(6032KiB/20560msec) clat (usec): min=46, max=122948, avg=28291.44, stdev=18690.24 lat (usec): min=47, max=122949, avg=28292.69, stdev=18690.13 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 74], 10.00th=[ 285], 20.00th=[ 15008], | 30.00th=[ 18482], 40.00th=[ 21890], 50.00th=[ 26084], 60.00th=[ 30802], | 70.00th=[ 35390], 80.00th=[ 40633], 90.00th=[ 49021], 95.00th=[ 59507], | 99.00th=[ 94897], 99.50th=[107480], 99.90th=[123208], 99.95th=[123208], | 99.99th=[123208] bw ( KiB/s): min= 137, max= 538, per=25.88%, avg=291.43, stdev=86.52, samples=40 iops : min= 8, max= 33, avg=17.52, stdev= 5.40, samples=40 write: IOPS=19, BW=304KiB/s (312kB/s)(6256KiB/20560msec); 0 zone resets clat (usec): min=1516, max=112225, avg=24790.69, stdev=21911.39 lat (usec): min=1518, max=112228, avg=24792.60, stdev=21911.32 clat percentiles (usec): | 1.00th=[ 1991], 5.00th=[ 3032], 10.00th=[ 3752], 20.00th=[ 5800], | 30.00th=[ 8029], 40.00th=[ 13960], 50.00th=[ 18482], 60.00th=[ 24249], | 70.00th=[ 30540], 80.00th=[ 41157], 90.00th=[ 57410], 95.00th=[ 68682], | 99.00th=[ 90702], 99.50th=[110625], 99.90th=[112722], 99.95th=[112722], | 99.99th=[112722] bw ( KiB/s): min= 126, max= 544, per=25.63%, avg=303.40, stdev=89.32, samples=40 iops : min= 7, max= 34, avg=18.27, stdev= 5.73, samples=40 lat (usec) : 50=0.13%, 100=2.99%, 250=1.43%, 500=0.39%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=0.52%, 4=5.60%, 10=11.72%, 20=20.57%, 50=44.27% lat (msec) : 100=11.46%, 250=0.65% cpu : usr=0.09%, sys=11.40%, ctx=2032, 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=1126KiB/s (1153kB/s), 281KiB/s-294KiB/s (287kB/s-301kB/s), io=23.4MiB (24.5MB), run=20335-21271msec WRITE: bw=1185KiB/s (1213kB/s), 284KiB/s-320KiB/s (290kB/s-327kB/s), io=24.6MiB (25.8MB), run=20335-21271msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180623: Wed Aug 26 20:47:06 2026 read: IOPS=13, BW=215KiB/s (220kB/s)(5920KiB/27530msec) clat (msec): min=6, max=134, avg=29.71, stdev=22.09 lat (msec): min=6, max=134, avg=29.71, stdev=22.09 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 40], 90.00th=[ 62], 95.00th=[ 83], | 99.00th=[ 111], 99.50th=[ 124], 99.90th=[ 136], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 63, max= 479, per=24.44%, avg=211.43, stdev=96.43, samples=54 iops : min= 3, max= 29, avg=12.52, stdev= 6.05, samples=54 write: IOPS=14, BW=231KiB/s (237kB/s)(6368KiB/27530msec); 0 zone resets clat (msec): min=9, max=180, avg=41.12, stdev=23.86 lat (msec): min=9, max=180, avg=41.12, stdev=23.86 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 49], 80.00th=[ 58], 90.00th=[ 73], 95.00th=[ 86], | 99.00th=[ 129], 99.50th=[ 150], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 94, max= 509, per=25.26%, avg=229.87, stdev=97.59, samples=54 iops : min= 5, max= 31, avg=13.67, stdev= 6.16, samples=54 lat (msec) : 10=2.08%, 20=25.00%, 50=51.30%, 100=19.27%, 250=2.34% cpu : usr=0.08%, sys=3.84%, ctx=1246, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180624: Wed Aug 26 20:47:06 2026 read: IOPS=12, BW=207KiB/s (212kB/s)(5744KiB/27684msec) clat (msec): min=5, max=165, avg=28.83, stdev=24.62 lat (msec): min=5, max=165, avg=28.83, stdev=24.62 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 37], 90.00th=[ 60], 95.00th=[ 85], | 99.00th=[ 133], 99.50th=[ 140], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 54, max= 606, per=23.80%, avg=205.89, stdev=108.89, samples=54 iops : min= 3, max= 37, avg=12.17, stdev= 6.79, samples=54 write: IOPS=14, BW=236KiB/s (242kB/s)(6544KiB/27684msec); 0 zone resets clat (msec): min=12, max=149, avg=42.15, stdev=24.27 lat (msec): min=12, max=149, avg=42.15, stdev=24.26 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 41], | 70.00th=[ 50], 80.00th=[ 61], 90.00th=[ 79], 95.00th=[ 92], | 99.00th=[ 123], 99.50th=[ 134], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 62, max= 572, per=25.61%, avg=233.02, stdev=101.79, samples=54 iops : min= 3, max= 35, avg=13.85, stdev= 6.43, samples=54 lat (msec) : 10=3.39%, 20=25.39%, 50=50.00%, 100=18.23%, 250=2.99% cpu : usr=0.09%, sys=3.70%, ctx=1188, 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=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=180625: Wed Aug 26 20:47:06 2026 read: IOPS=14, BW=229KiB/s (235kB/s)(6256KiB/27311msec) clat (msec): min=6, max=117, avg=29.56, stdev=20.47 lat (msec): min=6, max=117, avg=29.56, stdev=20.48 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 41], 90.00th=[ 61], 95.00th=[ 77], | 99.00th=[ 104], 99.50th=[ 106], 99.90th=[ 118], 99.95th=[ 118], | 99.99th=[ 118] bw ( KiB/s): min= 63, max= 510, per=26.57%, avg=229.83, stdev=108.40, samples=54 iops : min= 3, max= 31, avg=13.67, stdev= 6.82, samples=54 write: IOPS=13, BW=221KiB/s (226kB/s)(6032KiB/27311msec); 0 zone resets clat (msec): min=12, max=155, avg=41.69, stdev=22.35 lat (msec): min=12, max=155, avg=41.70, stdev=22.34 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 50], 80.00th=[ 58], 90.00th=[ 75], 95.00th=[ 85], | 99.00th=[ 117], 99.50th=[ 136], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 95, max= 512, per=24.14%, avg=219.65, stdev=97.28, samples=54 iops : min= 5, max= 32, avg=13.04, stdev= 6.12, samples=54 lat (msec) : 10=3.91%, 20=21.22%, 50=52.47%, 100=21.09%, 250=1.30% cpu : usr=0.05%, sys=3.96%, ctx=1319, 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=180626: Wed Aug 26 20:47:06 2026 read: IOPS=13, BW=218KiB/s (223kB/s)(6032KiB/27642msec) clat (msec): min=6, max=135, avg=28.50, stdev=21.46 lat (msec): min=6, max=135, avg=28.51, stdev=21.46 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 39], 90.00th=[ 60], 95.00th=[ 78], | 99.00th=[ 102], 99.50th=[ 126], 99.90th=[ 136], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 31, max= 509, per=24.86%, avg=215.04, stdev=110.56, samples=54 iops : min= 1, max= 31, avg=12.74, stdev= 6.87, samples=54 write: IOPS=14, BW=226KiB/s (232kB/s)(6256KiB/27642msec); 0 zone resets clat (msec): min=10, max=177, avg=42.92, stdev=26.10 lat (msec): min=10, max=177, avg=42.92, stdev=26.10 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 64], 90.00th=[ 79], 95.00th=[ 96], | 99.00th=[ 126], 99.50th=[ 136], 99.90th=[ 178], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 95, max= 576, per=24.59%, avg=223.74, stdev=102.70, samples=54 iops : min= 5, max= 36, avg=13.28, stdev= 6.53, samples=54 lat (msec) : 10=2.99%, 20=26.69%, 50=48.31%, 100=19.27%, 250=2.73% cpu : usr=0.05%, sys=3.81%, ctx=1332, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=865KiB/s (886kB/s), 207KiB/s-229KiB/s (212kB/s-235kB/s), io=23.4MiB (24.5MB), run=27311-27684msec WRITE: bw=910KiB/s (932kB/s), 221KiB/s-236KiB/s (226kB/s-242kB/s), io=24.6MiB (25.8MB), run=27311-27684msec 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=180639: Wed Aug 26 20:47:16 2026 read: IOPS=2, BW=2731KiB/s (2796kB/s)(7168KiB/2625msec) clat (usec): min=509, max=265194, avg=152750.62, stdev=86124.76 lat (usec): min=509, max=265195, avg=152751.93, stdev=86125.02 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[101188], | 30.00th=[143655], 40.00th=[143655], 50.00th=[147850], 60.00th=[191890], | 70.00th=[191890], 80.00th=[219153], 90.00th=[265290], 95.00th=[265290], | 99.00th=[265290], 99.50th=[265290], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 1935, max= 3946, per=51.09%, avg=3177.00, stdev=1085.74, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1950KiB/s (1997kB/s)(5120KiB/2625msec); 0 zone resets clat (msec): min=129, max=440, avg=283.55, stdev=128.14 lat (msec): min=130, max=441, avg=283.68, stdev=128.10 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 130], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 249], 60.00th=[ 249], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 1825, max= 4087, per=30.04%, avg=2615.67, stdev=1275.40, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=66.67%, 500=25.00% cpu : usr=0.00%, sys=34.68%, ctx=444, 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=180640: Wed Aug 26 20:47:16 2026 read: IOPS=0, BW=622KiB/s (637kB/s)(2048KiB/3293msec) clat (msec): min=250, max=263, avg=256.83, stdev= 9.07 lat (msec): min=250, max=263, avg=256.83, stdev= 9.07 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 251], 50.00th=[ 251], 60.00th=[ 264], | 70.00th=[ 264], 80.00th=[ 264], 90.00th=[ 264], 95.00th=[ 264], | 99.00th=[ 264], 99.50th=[ 264], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 1939, max= 2043, per=32.01%, avg=1991.00, stdev=73.54, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3110KiB/s (3184kB/s)(10.0MiB/3293msec); 0 zone resets clat (msec): min=141, max=422, avg=269.59, stdev=99.56 lat (msec): min=141, max=422, avg=269.87, stdev=99.41 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 199], | 30.00th=[ 203], 40.00th=[ 205], 50.00th=[ 220], 60.00th=[ 226], | 70.00th=[ 296], 80.00th=[ 388], 90.00th=[ 397], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 3871, max= 5475, per=49.60%, avg=4318.00, stdev=776.19, samples=4 iops : min= 3, max= 5, avg= 3.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=50.00% cpu : usr=0.00%, sys=34.02%, ctx=158, 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=180641: Wed Aug 26 20:47:16 2026 read: IOPS=1, BW=2036KiB/s (2085kB/s)(6144KiB/3017msec) clat (usec): min=565, max=302087, avg=158190.32, stdev=127654.43 lat (usec): min=566, max=302088, avg=158191.64, stdev=127654.48 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 578], | 30.00th=[ 578], 40.00th=[200279], 50.00th=[200279], 60.00th=[200279], | 70.00th=[244319], 80.00th=[244319], 90.00th=[304088], 95.00th=[304088], | 99.00th=[304088], 99.50th=[304088], 99.90th=[304088], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 3871, max= 4087, per=63.98%, avg=3979.00, stdev=152.74, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2036KiB/s (2085kB/s)(6144KiB/3017msec); 0 zone resets clat (msec): min=98, max=984, avg=333.73, stdev=342.04 lat (msec): min=98, max=984, avg=333.79, stdev=342.04 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 105], | 30.00th=[ 105], 40.00th=[ 106], 50.00th=[ 106], 60.00th=[ 342], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 1935, max= 3856, per=29.99%, avg=2611.33, stdev=1079.26, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=16.67% lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 1000=8.33% cpu : usr=0.03%, sys=25.36%, ctx=189, 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=180642: Wed Aug 26 20:47:16 2026 read: IOPS=1, BW=1945KiB/s (1992kB/s)(5120KiB/2632msec) clat (usec): min=564, max=246864, avg=99782.02, stdev=115131.44 lat (usec): min=565, max=246865, avg=99783.19, stdev=115131.12 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 562], | 30.00th=[ 603], 40.00th=[ 603], 50.00th=[ 53216], 60.00th=[ 53216], | 70.00th=[198181], 80.00th=[198181], 90.00th=[246416], 95.00th=[246416], | 99.00th=[246416], 99.50th=[246416], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 3871, max= 4087, per=63.98%, avg=3979.00, stdev=152.74, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2723KiB/s (2789kB/s)(7168KiB/2632msec); 0 zone resets clat (msec): min=157, max=494, avg=301.94, stdev=110.48 lat (msec): min=157, max=494, avg=302.01, stdev=110.48 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 313], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 359], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 1921, max= 3650, per=27.42%, avg=2387.25, stdev=843.60, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=16.67% lat (msec) : 100=8.33%, 250=41.67%, 500=33.33% cpu : usr=0.00%, sys=33.03%, ctx=228, 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=6219KiB/s (6369kB/s), 622KiB/s-2731KiB/s (637kB/s-2796kB/s), io=20.0MiB (20.0MB), run=2625-3293msec WRITE: bw=8707KiB/s (8916kB/s), 1950KiB/s-3110KiB/s (1997kB/s-3184kB/s), io=28.0MiB (29.4MB), run=2625-3293msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180643: Wed Aug 26 20:47:16 2026 read: IOPS=2, BW=2249KiB/s (2303kB/s)(7168KiB/3187msec) clat (msec): min=61, max=859, avg=203.39, stdev=290.79 lat (msec): min=61, max=859, avg=203.39, stdev=290.79 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 65], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 96], 60.00th=[ 129], | 70.00th=[ 129], 80.00th=[ 134], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 2039, max= 4087, per=52.63%, avg=3010.00, stdev=1122.38, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1607KiB/s (1645kB/s)(5120KiB/3187msec); 0 zone resets clat (msec): min=70, max=456, avg=312.61, stdev=161.68 lat (msec): min=70, max=456, avg=312.69, stdev=161.68 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 71], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 2039, max= 3878, per=33.14%, avg=2653.33, stdev=1060.59, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=41.67%, 250=25.00%, 500=25.00%, 1000=8.33% cpu : usr=0.00%, sys=10.45%, ctx=123, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180644: Wed Aug 26 20:47:16 2026 read: IOPS=0, BW=572KiB/s (586kB/s)(2048KiB/3581msec) clat (msec): min=142, max=225, avg=184.04, stdev=58.08 lat (msec): min=142, max=225, avg=184.04, stdev=58.08 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 226], | 70.00th=[ 226], 80.00th=[ 226], 90.00th=[ 226], 95.00th=[ 226], | 99.00th=[ 226], 99.50th=[ 226], 99.90th=[ 226], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 1280, max= 2031, per=28.95%, avg=1655.50, stdev=531.04, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2860KiB/s (2928kB/s)(10.0MiB/3581msec); 0 zone resets clat (msec): min=103, max=696, avg=307.82, stdev=191.75 lat (msec): min=104, max=696, avg=307.89, stdev=191.74 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 128], | 30.00th=[ 192], 40.00th=[ 199], 50.00th=[ 218], 60.00th=[ 247], | 70.00th=[ 351], 80.00th=[ 405], 90.00th=[ 550], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1957, max= 4071, per=39.99%, avg=3201.40, stdev=1108.38, samples=5 iops : min= 1, max= 3, avg= 2.20, stdev= 1.10, samples=5 lat (msec) : 250=66.67%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=14.72%, ctx=136, 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=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=180645: Wed Aug 26 20:47:16 2026 read: IOPS=1, BW=1734KiB/s (1775kB/s)(6144KiB/3544msec) clat (msec): min=59, max=417, avg=222.38, stdev=159.05 lat (msec): min=59, max=417, avg=222.38, stdev=159.05 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 60], 10.00th=[ 60], 20.00th=[ 91], | 30.00th=[ 91], 40.00th=[ 104], 50.00th=[ 104], 60.00th=[ 275], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 1935, max= 4079, per=46.96%, avg=2685.67, stdev=1207.87, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1734KiB/s (1775kB/s)(6144KiB/3544msec); 0 zone resets clat (msec): min=98, max=799, avg=361.50, stdev=301.47 lat (msec): min=98, max=799, avg=361.58, stdev=301.47 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 176], 50.00th=[ 176], 60.00th=[ 284], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1935, max= 3908, per=32.40%, avg=2594.00, stdev=1137.96, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=25.00%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=8.02%, ctx=83, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180646: Wed Aug 26 20:47:16 2026 read: IOPS=1, BW=1448KiB/s (1483kB/s)(5120KiB/3535msec) clat (msec): min=53, max=481, avg=179.02, stdev=172.84 lat (msec): min=53, max=481, avg=179.02, stdev=172.84 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 54], | 30.00th=[ 84], 40.00th=[ 84], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 140], 80.00th=[ 140], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 3893, max= 4063, per=69.56%, avg=3978.00, stdev=120.21, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2028KiB/s (2076kB/s)(7168KiB/3535msec); 0 zone resets clat (msec): min=136, max=745, avg=354.26, stdev=232.25 lat (msec): min=136, max=745, avg=354.35, stdev=232.26 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 142], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 351], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 518], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1283, max= 4071, per=28.18%, avg=2256.00, stdev=1058.39, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=9.54%, ctx=145, 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=5719KiB/s (5856kB/s), 572KiB/s-2249KiB/s (586kB/s-2303kB/s), io=20.0MiB (20.0MB), run=3187-3581msec WRITE: bw=8007KiB/s (8199kB/s), 1607KiB/s-2860KiB/s (1645kB/s-2928kB/s), io=28.0MiB (29.4MB), run=3187-3581msec 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=180652: Wed Aug 26 20:47:26 2026 read: IOPS=1, BW=6667KiB/s (6827kB/s)(12.0MiB/1843msec) clat (msec): min=501, max=692, avg=601.84, stdev=95.80 lat (msec): min=501, max=692, avg=601.85, stdev=95.80 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 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= 5720, max= 8159, per=100.00%, avg=6939.50, stdev=1724.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=26.38%, ctx=790, 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=180653: Wed Aug 26 20:47:26 2026 read: IOPS=0, BW=1620KiB/s (1658kB/s)(4096KiB/2529msec) clat (nsec): min=500323k, max=500323k, avg=500322996.00, stdev= 0.00 lat (nsec): min=500326k, max=500326k, avg=500326045.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 502], | 70.00th=[ 502], 80.00th=[ 502], 90.00th=[ 502], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 5572, max= 5572, per=86.01%, avg=5572.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3239KiB/s (3317kB/s)(8192KiB/2529msec); 0 zone resets clat (msec): min=811, max=1160, avg=985.80, stdev=246.58 lat (msec): min=811, max=1160, avg=986.04, stdev=246.69 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 1167], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8000, max= 8000, per=61.75%, avg=8000.00, 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=10.72%, ctx=356, 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=180654: Wed Aug 26 20:47:26 2026 write: IOPS=1, BW=6056KiB/s (6202kB/s)(12.0MiB/2029msec); 0 zone resets clat (msec): min=580, max=712, avg=650.60, stdev=66.81 lat (msec): min=581, max=720, avg=653.71, stdev=69.29 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 709], 80.00th=[ 709], 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= 5490, max= 8000, per=52.06%, avg=6745.00, stdev=1774.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=11.59%, ctx=171, 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=180655: Wed Aug 26 20:47:26 2026 write: IOPS=1, BW=6279KiB/s (6430kB/s)(12.0MiB/1957msec); 0 zone resets clat (msec): min=380, max=948, avg=640.29, stdev=287.27 lat (msec): min=380, max=949, avg=641.08, stdev=287.75 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 5793, max= 8159, per=53.84%, avg=6976.00, stdev=1673.01, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=8.07%, ctx=66, 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=6478KiB/s (6634kB/s), 1620KiB/s-6667KiB/s (1658kB/s-6827kB/s), io=16.0MiB (16.8MB), run=1843-2529msec WRITE: bw=12.7MiB/s (13.3MB/s), 3239KiB/s-6279KiB/s (3317kB/s-6430kB/s), io=32.0MiB (33.6MB), run=1957-2529msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180657: Wed Aug 26 20:47:26 2026 read: IOPS=1, BW=5187KiB/s (5311kB/s)(12.0MiB/2369msec) clat (msec): min=215, max=1300, avg=756.09, stdev=542.72 lat (msec): min=215, max=1300, avg=756.09, stdev=542.72 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.93%, ctx=58, 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=180658: Wed Aug 26 20:47:26 2026 read: IOPS=0, BW=1681KiB/s (1721kB/s)(4096KiB/2437msec) clat (nsec): min=1137.0M, max=1137.0M, avg=1137005381.00, stdev= 0.00 lat (nsec): min=1137.0M, max=1137.0M, avg=1137008021.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1133], 5.00th=[ 1133], 10.00th=[ 1133], 20.00th=[ 1133], | 30.00th=[ 1133], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 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= 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=3362KiB/s (3442kB/s)(8192KiB/2437msec); 0 zone resets clat (msec): min=428, max=780, avg=604.67, stdev=248.44 lat (msec): min=429, max=780, avg=604.98, stdev=248.44 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 785], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 8192, max= 8192, per=60.93%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.49%, ctx=68, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180659: Wed Aug 26 20:47:26 2026 write: IOPS=1, BW=5570KiB/s (5704kB/s)(12.0MiB/2206msec); 0 zone resets clat (msec): min=154, max=1037, avg=726.62, stdev=496.28 lat (msec): min=154, max=1038, avg=727.01, stdev=496.35 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 1036], 80.00th=[ 1036], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 8159, max= 8159, per=60.68%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=8.12%, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=180660: Wed Aug 26 20:47:26 2026 write: IOPS=1, BW=6222KiB/s (6371kB/s)(12.0MiB/1975msec); 0 zone resets clat (msec): min=212, max=889, avg=628.28, stdev=363.96 lat (msec): min=213, max=892, avg=629.65, stdev=364.26 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 8159, max= 8159, per=60.68%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.05%, sys=9.83%, ctx=68, 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=6723KiB/s (6884kB/s), 1681KiB/s-5187KiB/s (1721kB/s-5311kB/s), io=16.0MiB (16.8MB), run=2369-2437msec WRITE: bw=13.1MiB/s (13.8MB/s), 3362KiB/s-6222KiB/s (3442kB/s-6371kB/s), io=32.0MiB (33.6MB), run=1975-2437msec