== sanity test 398b: DIO and buffer IO race ============== 08:03:06 (1787832186) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.40042 s, 6.0 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=179110: Thu Aug 27 08:05:53 2026 read: IOPS=10, BW=43.9KiB/s (44.9kB/s)(5992KiB/136548msec) clat (usec): min=37, max=1116.5k, avg=50575.75, stdev=43030.87 lat (usec): min=37, max=1116.5k, avg=50578.43, stdev=43030.57 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 11338], 10.00th=[ 19268], | 20.00th=[ 25297], 30.00th=[ 31065], 40.00th=[ 36439], | 50.00th=[ 42206], 60.00th=[ 51119], 70.00th=[ 59507], | 80.00th=[ 70779], 90.00th=[ 89654], 95.00th=[ 109577], | 99.00th=[ 160433], 99.50th=[ 204473], 99.90th=[ 367002], | 99.95th=[1115685], 99.99th=[1115685] bw ( KiB/s): min= 7, max= 87, per=25.58%, avg=43.48, stdev=18.08, samples=268 iops : min= 1, max= 21, avg=10.20, stdev= 4.53, samples=268 write: IOPS=11, BW=46.1KiB/s (47.2kB/s)(6296KiB/136548msec); 0 zone resets clat (usec): min=1085, max=261835, avg=38475.44, stdev=39968.01 lat (usec): min=1086, max=261837, avg=38480.61, stdev=39965.91 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1450], 10.00th=[ 2114], 20.00th=[ 4490], | 30.00th=[ 7963], 40.00th=[ 16581], 50.00th=[ 27919], 60.00th=[ 38536], | 70.00th=[ 49021], 80.00th=[ 63177], 90.00th=[ 96994], 95.00th=[120062], | 99.00th=[168821], 99.50th=[189793], 99.90th=[240124], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 7, max= 119, per=25.78%, avg=45.89, stdev=21.65, samples=267 iops : min= 1, max= 29, avg=10.80, stdev= 5.44, samples=267 lat (usec) : 50=0.03%, 100=1.86%, 250=0.13%, 1000=0.03% lat (msec) : 2=5.08%, 4=4.13%, 10=8.37%, 20=7.49%, 50=37.89% lat (msec) : 100=26.69%, 250=8.20%, 500=0.07%, 2000=0.03% cpu : usr=0.09%, sys=5.09%, ctx=6551, 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=179111: Thu Aug 27 08:05:53 2026 read: IOPS=10, BW=42.4KiB/s (43.4kB/s)(5940KiB/140251msec) clat (usec): min=42, max=1024.4k, avg=52168.70, stdev=42236.37 lat (usec): min=43, max=1024.4k, avg=52174.14, stdev=42234.56 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 11600], 10.00th=[ 19530], | 20.00th=[ 26870], 30.00th=[ 32375], 40.00th=[ 38536], | 50.00th=[ 44827], 60.00th=[ 52691], 70.00th=[ 61080], | 80.00th=[ 73925], 90.00th=[ 93848], 95.00th=[ 109577], | 99.00th=[ 168821], 99.50th=[ 200279], 99.90th=[ 312476], | 99.95th=[1027605], 99.99th=[1027605] bw ( KiB/s): min= 7, max= 94, per=24.77%, avg=42.10, stdev=17.64, samples=275 iops : min= 1, max= 23, avg= 9.85, stdev= 4.45, samples=275 write: IOPS=11, BW=45.3KiB/s (46.3kB/s)(6348KiB/140251msec); 0 zone resets clat (usec): min=1029, max=374798, avg=39413.06, stdev=39852.18 lat (usec): min=1030, max=374799, avg=39415.19, stdev=39852.18 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1401], 10.00th=[ 2180], 20.00th=[ 5080], | 30.00th=[ 8979], 40.00th=[ 17433], 50.00th=[ 28967], 60.00th=[ 39060], | 70.00th=[ 51119], 80.00th=[ 68682], 90.00th=[ 94897], 95.00th=[116917], | 99.00th=[168821], 99.50th=[183501], 99.90th=[233833], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 7, max= 135, per=25.35%, avg=45.13, stdev=21.59, samples=274 iops : min= 1, max= 33, avg=10.63, stdev= 5.43, samples=274 lat (usec) : 50=0.03%, 100=1.73%, 250=0.26%, 500=0.03%, 1000=0.03% lat (msec) : 2=4.65%, 4=4.04%, 10=8.04%, 20=8.27%, 50=35.94% lat (msec) : 100=28.81%, 250=7.98%, 500=0.16%, 2000=0.03% cpu : usr=0.09%, sys=5.04%, ctx=6613, 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=179112: Thu Aug 27 08:05:53 2026 read: IOPS=10, BW=42.7KiB/s (43.8kB/s)(6028KiB/141036msec) clat (usec): min=49, max=219588, avg=51338.48, stdev=32793.48 lat (usec): min=51, max=219591, avg=51343.43, stdev=32791.73 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 11994], 10.00th=[ 18744], 20.00th=[ 25560], | 30.00th=[ 30540], 40.00th=[ 36963], 50.00th=[ 43779], 60.00th=[ 52167], | 70.00th=[ 63177], 80.00th=[ 74974], 90.00th=[ 95945], 95.00th=[112722], | 99.00th=[158335], 99.50th=[175113], 99.90th=[204473], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 7, max= 95, per=25.10%, avg=42.68, stdev=17.62, samples=274 iops : min= 1, max= 23, avg=10.00, stdev= 4.41, samples=274 write: IOPS=11, BW=44.4KiB/s (45.5kB/s)(6260KiB/141036msec); 0 zone resets clat (usec): min=1019, max=1070.2k, avg=40525.79, stdev=48918.30 lat (usec): min=1021, max=1070.2k, avg=40539.00, stdev=48920.53 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1401], 10.00th=[ 2089], | 20.00th=[ 4817], 30.00th=[ 9372], 40.00th=[ 18744], | 50.00th=[ 30540], 60.00th=[ 39584], 70.00th=[ 51119], | 80.00th=[ 67634], 90.00th=[ 93848], 95.00th=[ 113771], | 99.00th=[ 183501], 99.50th=[ 258999], 99.90th=[ 375391], | 99.95th=[1069548], 99.99th=[1069548] bw ( KiB/s): min= 7, max= 119, per=24.62%, avg=43.82, stdev=20.84, samples=277 iops : min= 1, max= 29, avg=10.28, stdev= 5.23, samples=277 lat (usec) : 50=0.03%, 100=1.73%, 250=0.20%, 750=0.07% lat (msec) : 2=4.98%, 4=4.07%, 10=7.00%, 20=8.37%, 50=37.11% lat (msec) : 100=28.22%, 250=7.94%, 500=0.26%, 2000=0.03% cpu : usr=0.09%, sys=5.04%, ctx=6722, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179113: Thu Aug 27 08:05:53 2026 read: IOPS=10, BW=43.0KiB/s (44.1kB/s)(6052KiB/140600msec) clat (usec): min=41, max=300889, avg=50304.21, stdev=32028.15 lat (usec): min=41, max=300890, avg=50319.25, stdev=32039.51 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 963], 10.00th=[ 17695], 20.00th=[ 25297], | 30.00th=[ 31327], 40.00th=[ 36963], 50.00th=[ 44827], 60.00th=[ 52167], | 70.00th=[ 62129], 80.00th=[ 73925], 90.00th=[ 89654], 95.00th=[105382], | 99.00th=[156238], 99.50th=[175113], 99.90th=[267387], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 7, max= 111, per=25.17%, avg=42.79, stdev=17.71, samples=276 iops : min= 1, max= 27, avg=10.03, stdev= 4.45, samples=276 write: IOPS=11, BW=44.4KiB/s (45.4kB/s)(6236KiB/140600msec); 0 zone resets clat (usec): min=1002, max=1125.8k, avg=41169.13, stdev=48622.47 lat (usec): min=1004, max=1125.8k, avg=41178.29, stdev=48618.85 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1450], 10.00th=[ 2540], | 20.00th=[ 5538], 30.00th=[ 9765], 40.00th=[ 19792], | 50.00th=[ 30540], 60.00th=[ 40109], 70.00th=[ 52167], | 80.00th=[ 69731], 90.00th=[ 96994], 95.00th=[ 121111], | 99.00th=[ 168821], 99.50th=[ 202376], 99.90th=[ 325059], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 111, per=24.79%, avg=44.12, stdev=20.53, samples=276 iops : min= 1, max= 27, avg=10.36, stdev= 5.15, samples=276 lat (usec) : 50=0.10%, 100=1.79%, 250=0.46%, 500=0.07%, 1000=0.07% lat (msec) : 2=4.10%, 4=3.78%, 10=7.71%, 20=8.30%, 50=36.98% lat (msec) : 100=29.07%, 250=7.42%, 500=0.13%, 2000=0.03% cpu : usr=0.08%, sys=5.16%, ctx=6735, 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=170KiB/s (174kB/s), 42.4KiB/s-43.9KiB/s (43.4kB/s-44.9kB/s), io=23.4MiB (24.6MB), run=136548-141036msec WRITE: bw=178KiB/s (183kB/s), 44.4KiB/s-46.1KiB/s (45.4kB/s-47.2kB/s), io=24.6MiB (25.7MB), run=136548-141036msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179104: Thu Aug 27 08:06:40 2026 read: IOPS=7, BW=31.8KiB/s (32.5kB/s)(5992KiB/188634msec) clat (msec): min=5, max=1526, avg=48.16, stdev=56.88 lat (msec): min=5, max=1526, avg=48.16, stdev=56.88 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 67], 90.00th=[ 106], 95.00th=[ 138], | 99.00th=[ 201], 99.50th=[ 236], 99.90th=[ 321], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7, max= 127, per=25.71%, avg=32.66, stdev=22.65, samples=355 iops : min= 1, max= 31, avg= 7.48, stdev= 5.69, samples=355 write: IOPS=8, BW=33.4KiB/s (34.2kB/s)(6296KiB/188634msec); 0 zone resets clat (msec): min=11, max=447, avg=73.67, stdev=49.98 lat (msec): min=11, max=447, avg=73.68, stdev=49.98 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 43], 40.00th=[ 50], 50.00th=[ 58], 60.00th=[ 70], | 70.00th=[ 84], 80.00th=[ 105], 90.00th=[ 144], 95.00th=[ 176], | 99.00th=[ 247], 99.50th=[ 279], 99.90th=[ 384], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 95, per=24.99%, avg=33.24, stdev=20.05, samples=366 iops : min= 1, max= 23, avg= 7.63, stdev= 5.04, samples=366 lat (msec) : 10=1.20%, 20=10.90%, 50=43.29%, 100=27.93%, 250=15.98% lat (msec) : 500=0.65%, 2000=0.03% cpu : usr=0.07%, sys=1.62%, ctx=4669, 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=179105: Thu Aug 27 08:06:40 2026 read: IOPS=7, BW=31.5KiB/s (32.2kB/s)(5940KiB/188795msec) clat (msec): min=6, max=1456, avg=47.44, stdev=55.77 lat (msec): min=6, max=1456, avg=47.44, stdev=55.77 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 67], 90.00th=[ 105], 95.00th=[ 140], | 99.00th=[ 213], 99.50th=[ 249], 99.90th=[ 292], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 7, max= 118, per=25.69%, avg=32.62, stdev=21.74, samples=353 iops : min= 1, max= 29, avg= 7.47, stdev= 5.48, samples=353 write: IOPS=8, BW=33.6KiB/s (34.4kB/s)(6348KiB/188795msec); 0 zone resets clat (msec): min=11, max=382, avg=74.23, stdev=50.64 lat (msec): min=11, max=382, avg=74.23, stdev=50.64 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 37], | 30.00th=[ 42], 40.00th=[ 49], 50.00th=[ 57], 60.00th=[ 69], | 70.00th=[ 86], 80.00th=[ 110], 90.00th=[ 142], 95.00th=[ 171], | 99.00th=[ 257], 99.50th=[ 300], 99.90th=[ 380], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 119, per=25.09%, avg=33.36, stdev=20.32, samples=369 iops : min= 1, max= 29, avg= 7.65, stdev= 5.11, samples=369 lat (msec) : 10=1.17%, 20=11.65%, 50=43.33%, 100=26.76%, 250=16.28% lat (msec) : 500=0.78%, 2000=0.03% cpu : usr=0.07%, sys=1.59%, ctx=4725, 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=179106: Thu Aug 27 08:06:40 2026 read: IOPS=8, BW=32.2KiB/s (32.0kB/s)(6028KiB/187182msec) clat (msec): min=6, max=329, avg=48.89, stdev=44.35 lat (msec): min=6, max=329, avg=48.89, stdev=44.35 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 53], 80.00th=[ 71], 90.00th=[ 108], 95.00th=[ 140], | 99.00th=[ 218], 99.50th=[ 253], 99.90th=[ 321], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 119, per=25.73%, avg=32.68, stdev=21.06, samples=355 iops : min= 1, max= 29, avg= 7.48, stdev= 5.32, samples=355 write: IOPS=8, BW=33.4KiB/s (34.2kB/s)(6260KiB/187182msec); 0 zone resets clat (msec): min=13, max=1479, avg=72.19, stdev=59.30 lat (msec): min=13, max=1479, avg=72.20, stdev=59.30 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 67], | 70.00th=[ 81], 80.00th=[ 102], 90.00th=[ 138], 95.00th=[ 165], | 99.00th=[ 241], 99.50th=[ 288], 99.90th=[ 409], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 7, max= 87, per=25.11%, avg=33.40, stdev=19.62, samples=361 iops : min= 1, max= 21, avg= 7.66, stdev= 4.94, samples=361 lat (msec) : 10=1.33%, 20=10.48%, 50=43.49%, 100=28.65%, 250=15.36% lat (msec) : 500=0.65%, 2000=0.03% cpu : usr=0.07%, sys=1.67%, ctx=4695, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179107: Thu Aug 27 08:06:40 2026 read: IOPS=8, BW=32.2KiB/s (32.0kB/s)(6052KiB/187849msec) clat (msec): min=5, max=321, avg=48.79, stdev=44.35 lat (msec): min=5, max=321, avg=48.80, stdev=44.35 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 71], 90.00th=[ 105], 95.00th=[ 140], | 99.00th=[ 215], 99.50th=[ 262], 99.90th=[ 317], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 7, max= 119, per=26.17%, avg=33.23, stdev=21.81, samples=353 iops : min= 1, max= 29, avg= 7.62, stdev= 5.49, samples=353 write: IOPS=8, BW=33.2KiB/s (33.0kB/s)(6236KiB/187849msec); 0 zone resets clat (msec): min=14, max=1489, avg=72.79, stdev=58.98 lat (msec): min=14, max=1489, avg=72.80, stdev=58.98 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 68], | 70.00th=[ 84], 80.00th=[ 105], 90.00th=[ 138], 95.00th=[ 165], | 99.00th=[ 241], 99.50th=[ 271], 99.90th=[ 397], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 7, max= 104, per=25.01%, avg=33.27, stdev=19.59, samples=363 iops : min= 1, max= 26, avg= 7.63, stdev= 4.94, samples=363 lat (msec) : 10=1.04%, 20=10.81%, 50=44.27%, 100=27.08%, 250=16.11% lat (msec) : 500=0.65%, 2000=0.03% cpu : usr=0.05%, sys=1.67%, ctx=4754, 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=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=127KiB/s (130kB/s), 31.5KiB/s-32.2KiB/s (32.2kB/s-32.0kB/s), io=23.4MiB (24.6MB), run=187182-188795msec WRITE: bw=133KiB/s (136kB/s), 33.2KiB/s-33.6KiB/s (33.0kB/s-34.4kB/s), io=24.6MiB (25.7MB), run=187182-188795msec 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=179157: Thu Aug 27 08:07:25 2026 read: IOPS=10, BW=173KiB/s (177kB/s)(5920KiB/34235msec) clat (usec): min=41, max=205866, avg=51031.19, stdev=36020.67 lat (usec): min=41, max=205868, avg=51051.93, stdev=35995.46 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 69], 10.00th=[ 174], 20.00th=[ 25822], | 30.00th=[ 33162], 40.00th=[ 38536], 50.00th=[ 45876], 60.00th=[ 52691], | 70.00th=[ 61604], 80.00th=[ 73925], 90.00th=[ 92799], 95.00th=[115868], | 99.00th=[191890], 99.50th=[200279], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 62, max= 319, per=24.95%, avg=170.88, stdev=59.68, samples=67 iops : min= 3, max= 19, avg= 9.91, stdev= 3.76, samples=67 write: IOPS=11, BW=186KiB/s (190kB/s)(6368KiB/34235msec); 0 zone resets clat (usec): min=1620, max=186743, avg=38033.25, stdev=35885.33 lat (usec): min=1622, max=186747, avg=38044.73, stdev=35899.78 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 3195], 10.00th=[ 4228], 20.00th=[ 7767], | 30.00th=[ 11731], 40.00th=[ 19792], 50.00th=[ 27919], 60.00th=[ 35390], | 70.00th=[ 46924], 80.00th=[ 62129], 90.00th=[ 92799], 95.00th=[113771], | 99.00th=[147850], 99.50th=[177210], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 31, max= 414, per=25.67%, avg=185.07, stdev=85.01, samples=67 iops : min= 1, max= 25, avg=10.82, stdev= 5.35, samples=67 lat (usec) : 50=0.26%, 100=3.78%, 250=0.78%, 500=0.13% lat (msec) : 2=1.82%, 4=3.26%, 10=8.85%, 20=9.24%, 50=36.33% lat (msec) : 100=27.08%, 250=8.46% cpu : usr=0.08%, sys=5.98%, ctx=1737, 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=179158: Thu Aug 27 08:07:25 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(5744KiB/34115msec) clat (usec): min=51, max=187258, avg=51227.59, stdev=33511.79 lat (usec): min=52, max=187259, avg=51237.39, stdev=33500.19 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 69], 10.00th=[ 3884], 20.00th=[ 25560], | 30.00th=[ 32375], 40.00th=[ 40633], 50.00th=[ 47449], 60.00th=[ 54264], | 70.00th=[ 63177], 80.00th=[ 73925], 90.00th=[ 89654], 95.00th=[108528], | 99.00th=[179307], 99.50th=[183501], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 31, max= 349, per=24.63%, avg=168.70, stdev=72.86, samples=67 iops : min= 1, max= 21, avg= 9.78, stdev= 4.62, samples=67 write: IOPS=11, BW=192KiB/s (196kB/s)(6544KiB/34115msec); 0 zone resets clat (usec): min=1785, max=209971, avg=37803.43, stdev=39034.69 lat (usec): min=1787, max=209974, avg=37810.09, stdev=39034.39 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2474], 10.00th=[ 3359], 20.00th=[ 5473], | 30.00th=[ 8848], 40.00th=[ 16319], 50.00th=[ 26084], 60.00th=[ 33817], | 70.00th=[ 45351], 80.00th=[ 64750], 90.00th=[ 96994], 95.00th=[124257], | 99.00th=[147850], 99.50th=[166724], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 30, max= 532, per=26.55%, avg=191.42, stdev=84.57, samples=67 iops : min= 1, max= 33, avg=11.22, stdev= 5.39, samples=67 lat (usec) : 100=3.78%, 250=0.52%, 500=0.13%, 1000=0.13% lat (msec) : 2=1.69%, 4=5.99%, 10=9.38%, 20=7.16%, 50=35.16% lat (msec) : 100=27.73%, 250=8.33% cpu : usr=0.07%, sys=6.02%, ctx=1752, 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=179159: Thu Aug 27 08:07:25 2026 read: IOPS=11, BW=179KiB/s (183kB/s)(6256KiB/34938msec) clat (usec): min=41, max=234764, avg=50913.85, stdev=34818.45 lat (usec): min=41, max=234766, avg=50915.35, stdev=34818.48 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 74], 10.00th=[ 11731], 20.00th=[ 29230], | 30.00th=[ 34341], 40.00th=[ 39060], 50.00th=[ 45351], 60.00th=[ 52167], | 70.00th=[ 60556], 80.00th=[ 71828], 90.00th=[ 90702], 95.00th=[109577], | 99.00th=[189793], 99.50th=[202376], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 318, per=26.08%, avg=178.62, stdev=69.01, samples=68 iops : min= 1, max= 19, avg=10.41, stdev= 4.31, samples=68 write: IOPS=10, BW=173KiB/s (177kB/s)(6032KiB/34938msec); 0 zone resets clat (usec): min=1689, max=235200, avg=39188.46, stdev=40353.17 lat (usec): min=1692, max=235203, avg=39191.42, stdev=40353.18 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2376], 10.00th=[ 3884], 20.00th=[ 6390], | 30.00th=[ 9896], 40.00th=[ 17433], 50.00th=[ 27132], 60.00th=[ 39060], | 70.00th=[ 49021], 80.00th=[ 66847], 90.00th=[ 92799], 95.00th=[114820], | 99.00th=[208667], 99.50th=[231736], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 31, max= 382, per=23.61%, avg=170.22, stdev=71.27, samples=68 iops : min= 1, max= 23, avg= 9.87, stdev= 4.49, samples=68 lat (usec) : 50=0.13%, 100=3.78%, 250=0.78%, 750=0.13%, 1000=0.13% lat (msec) : 2=1.17%, 4=3.78%, 10=10.29%, 20=7.42%, 50=35.81% lat (msec) : 100=29.30%, 250=7.29% cpu : usr=0.06%, sys=5.60%, ctx=1809, 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=179160: Thu Aug 27 08:07:25 2026 read: IOPS=11, BW=179KiB/s (184kB/s)(6032KiB/33631msec) clat (usec): min=42, max=240541, avg=49559.26, stdev=33924.29 lat (usec): min=42, max=240542, avg=49567.07, stdev=33915.25 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 69], 10.00th=[ 135], 20.00th=[ 24773], | 30.00th=[ 33817], 40.00th=[ 40109], 50.00th=[ 45876], 60.00th=[ 53216], | 70.00th=[ 61080], 80.00th=[ 71828], 90.00th=[ 87557], 95.00th=[112722], | 99.00th=[166724], 99.50th=[208667], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 376, per=25.94%, avg=177.67, stdev=63.64, samples=66 iops : min= 1, max= 23, avg=10.35, stdev= 4.06, samples=66 write: IOPS=11, BW=186KiB/s (190kB/s)(6256KiB/33631msec); 0 zone resets clat (usec): min=1575, max=173277, avg=37879.40, stdev=35710.40 lat (usec): min=1577, max=173278, avg=37882.75, stdev=35709.98 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2409], 10.00th=[ 3785], 20.00th=[ 6980], | 30.00th=[ 11338], 40.00th=[ 18220], 50.00th=[ 27395], 60.00th=[ 36963], | 70.00th=[ 49546], 80.00th=[ 66847], 90.00th=[ 88605], 95.00th=[112722], | 99.00th=[164627], 99.50th=[173016], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 31, max= 411, per=25.77%, avg=185.77, stdev=78.84, samples=66 iops : min= 1, max= 25, avg=10.86, stdev= 5.03, samples=66 lat (usec) : 50=0.26%, 100=4.30%, 250=0.91%, 500=0.13% lat (msec) : 2=1.95%, 4=3.52%, 10=8.98%, 20=9.77%, 50=33.46% lat (msec) : 100=30.47%, 250=6.25% cpu : usr=0.07%, sys=5.93%, ctx=1778, 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=686KiB/s (702kB/s), 168KiB/s-179KiB/s (172kB/s-184kB/s), io=23.4MiB (24.5MB), run=33631-34938msec WRITE: bw=721KiB/s (739kB/s), 173KiB/s-192KiB/s (177kB/s-196kB/s), io=24.6MiB (25.8MB), run=33631-34938msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179162: Thu Aug 27 08:07:40 2026 read: IOPS=7, BW=122KiB/s (125kB/s)(5920KiB/48637msec) clat (msec): min=7, max=273, avg=49.81, stdev=42.38 lat (msec): min=7, max=273, avg=49.82, stdev=42.38 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 50], 80.00th=[ 68], 90.00th=[ 105], 95.00th=[ 142], | 99.00th=[ 228], 99.50th=[ 253], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 319, per=25.19%, avg=122.92, stdev=69.58, samples=93 iops : min= 1, max= 19, avg= 6.90, stdev= 4.39, samples=93 write: IOPS=8, BW=131KiB/s (134kB/s)(6368KiB/48637msec); 0 zone resets clat (msec): min=16, max=312, avg=75.68, stdev=48.77 lat (msec): min=16, max=312, avg=75.69, stdev=48.77 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 28], 10.00th=[ 33], 20.00th=[ 41], | 30.00th=[ 46], 40.00th=[ 52], 50.00th=[ 59], 60.00th=[ 71], | 70.00th=[ 84], 80.00th=[ 109], 90.00th=[ 142], 95.00th=[ 182], | 99.00th=[ 239], 99.50th=[ 300], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 30, max= 313, per=25.69%, avg=131.77, stdev=67.50, samples=94 iops : min= 1, max= 19, avg= 7.47, stdev= 4.30, samples=94 lat (msec) : 10=0.13%, 20=7.81%, 50=45.44%, 100=29.69%, 250=16.28% lat (msec) : 500=0.65% cpu : usr=0.07%, sys=1.85%, ctx=1204, 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=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=179163: Thu Aug 27 08:07:40 2026 read: IOPS=7, BW=117KiB/s (120kB/s)(5744KiB/48974msec) clat (msec): min=7, max=287, avg=50.44, stdev=43.09 lat (msec): min=7, max=287, avg=50.45, stdev=43.09 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 72], 90.00th=[ 107], 95.00th=[ 146], | 99.00th=[ 234], 99.50th=[ 275], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 26, max= 416, per=24.39%, avg=119.02, stdev=76.88, samples=94 iops : min= 1, max= 26, avg= 6.66, stdev= 4.90, samples=94 write: IOPS=8, BW=134KiB/s (137kB/s)(6544KiB/48974msec); 0 zone resets clat (msec): min=14, max=253, avg=75.19, stdev=48.01 lat (msec): min=14, max=253, avg=75.19, stdev=48.01 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 26], 10.00th=[ 32], 20.00th=[ 39], | 30.00th=[ 46], 40.00th=[ 53], 50.00th=[ 58], 60.00th=[ 67], | 70.00th=[ 85], 80.00th=[ 109], 90.00th=[ 148], 95.00th=[ 182], | 99.00th=[ 232], 99.50th=[ 245], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 31, max= 412, per=25.84%, avg=132.55, stdev=77.08, samples=96 iops : min= 1, max= 25, avg= 7.51, stdev= 4.91, samples=96 lat (msec) : 10=0.39%, 20=8.59%, 50=42.32%, 100=30.86%, 250=17.45% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.87%, ctx=1237, 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=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=179164: Thu Aug 27 08:07:40 2026 read: IOPS=7, BW=128KiB/s (131kB/s)(6256KiB/49038msec) clat (msec): min=7, max=246, avg=50.04, stdev=39.12 lat (msec): min=7, max=246, avg=50.04, stdev=39.12 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 55], 80.00th=[ 70], 90.00th=[ 100], 95.00th=[ 133], | 99.00th=[ 215], 99.50th=[ 236], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 26, max= 414, per=26.10%, avg=127.39, stdev=85.07, samples=96 iops : min= 1, max= 25, avg= 7.19, stdev= 5.39, samples=96 write: IOPS=7, BW=123KiB/s (126kB/s)(6032KiB/49038msec); 0 zone resets clat (msec): min=13, max=298, avg=77.91, stdev=48.74 lat (msec): min=13, max=298, avg=77.92, stdev=48.75 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 27], 10.00th=[ 34], 20.00th=[ 42], | 30.00th=[ 48], 40.00th=[ 53], 50.00th=[ 60], 60.00th=[ 73], | 70.00th=[ 90], 80.00th=[ 112], 90.00th=[ 148], 95.00th=[ 184], | 99.00th=[ 241], 99.50th=[ 257], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 30, max= 318, per=23.78%, avg=122.00, stdev=65.05, samples=95 iops : min= 1, max= 19, avg= 6.84, stdev= 4.17, samples=95 lat (msec) : 10=0.39%, 20=6.90%, 50=44.14%, 100=31.51%, 250=16.80% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=1.87%, ctx=1224, 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=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=179165: Thu Aug 27 08:07:40 2026 read: IOPS=7, BW=126KiB/s (129kB/s)(6032KiB/47929msec) clat (msec): min=6, max=310, avg=52.59, stdev=42.87 lat (msec): min=6, max=310, avg=52.59, stdev=42.87 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 40], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 73], 90.00th=[ 113], 95.00th=[ 142], | 99.00th=[ 205], 99.50th=[ 288], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 351, per=26.80%, avg=130.79, stdev=71.14, samples=90 iops : min= 1, max= 21, avg= 7.40, stdev= 4.55, samples=90 write: IOPS=8, BW=131KiB/s (134kB/s)(6256KiB/47929msec); 0 zone resets clat (msec): min=20, max=309, avg=71.68, stdev=45.05 lat (msec): min=20, max=309, avg=71.70, stdev=45.05 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 29], 10.00th=[ 34], 20.00th=[ 39], | 30.00th=[ 44], 40.00th=[ 50], 50.00th=[ 57], 60.00th=[ 66], | 70.00th=[ 78], 80.00th=[ 99], 90.00th=[ 129], 95.00th=[ 169], | 99.00th=[ 230], 99.50th=[ 236], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 31, max= 312, per=25.41%, avg=130.33, stdev=70.48, samples=94 iops : min= 1, max= 19, avg= 7.38, stdev= 4.49, samples=94 lat (msec) : 10=0.52%, 20=6.64%, 50=45.83%, 100=30.99%, 250=15.63% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.80%, ctx=1184, 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=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=488KiB/s (500kB/s), 117KiB/s-128KiB/s (120kB/s-131kB/s), io=23.4MiB (24.5MB), run=47929-49038msec WRITE: bw=514KiB/s (526kB/s), 123KiB/s-134KiB/s (126kB/s-137kB/s), io=24.6MiB (25.8MB), run=47929-49038msec 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=179179: Thu Aug 27 08:07:59 2026 read: IOPS=1, BW=1176KiB/s (1204kB/s)(7168KiB/6094msec) clat (msec): min=73, max=557, avg=282.50, stdev=161.35 lat (msec): min=73, max=557, avg=282.50, stdev=161.35 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 182], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 224], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 393], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1512, max= 4087, per=69.50%, avg=2335.20, stdev=1004.28, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=840KiB/s (860kB/s)(5120KiB/6094msec); 0 zone resets clat (msec): min=415, max=1216, avg=783.09, stdev=336.62 lat (msec): min=416, max=1216, avg=783.23, stdev=336.64 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 2000, max= 2039, per=42.97%, avg=2021.25, stdev=18.80, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=16.67%, 1000=8.33% lat (msec) : 2000=16.67% cpu : usr=0.02%, sys=2.10%, ctx=72, 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=179180: Thu Aug 27 08:07:59 2026 read: IOPS=0, BW=358KiB/s (367kB/s)(2048KiB/5722msec) clat (msec): min=135, max=226, avg=181.25, stdev=64.32 lat (msec): min=135, max=226, avg=181.25, stdev=64.32 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 136], 60.00th=[ 228], | 70.00th=[ 228], 80.00th=[ 228], 90.00th=[ 228], 95.00th=[ 228], | 99.00th=[ 228], 99.50th=[ 228], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 1523, max= 2039, per=53.01%, avg=1781.00, stdev=364.87, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1790KiB/s (1833kB/s)(10.0MiB/5722msec); 0 zone resets clat (msec): min=135, max=1377, avg=531.58, stdev=376.35 lat (msec): min=135, max=1377, avg=531.81, stdev=376.44 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 243], | 30.00th=[ 257], 40.00th=[ 317], 50.00th=[ 376], 60.00th=[ 380], | 70.00th=[ 642], 80.00th=[ 776], 90.00th=[ 810], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 1965, max= 4071, per=53.67%, avg=2524.83, stdev=864.41, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (msec) : 250=33.33%, 500=33.33%, 750=8.33%, 1000=16.67%, 2000=8.33% cpu : usr=0.07%, sys=3.60%, ctx=98, 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=179181: Thu Aug 27 08:07:59 2026 read: IOPS=1, BW=1274KiB/s (1304kB/s)(6144KiB/4823msec) clat (msec): min=133, max=613, avg=347.80, stdev=209.97 lat (msec): min=133, max=613, avg=347.80, stdev=209.97 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 241], 50.00th=[ 241], 60.00th=[ 305], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2035, max= 4055, per=99.71%, avg=3350.33, stdev=1140.08, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1274KiB/s (1304kB/s)(6144KiB/4823msec); 0 zone resets clat (msec): min=188, max=763, avg=427.68, stdev=238.61 lat (msec): min=188, max=763, avg=427.82, stdev=238.60 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 514], | 70.00th=[ 617], 80.00th=[ 617], 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= 1965, max= 2972, per=46.82%, avg=2202.20, stdev=431.37, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=41.67%, 500=16.67%, 750=33.33%, 1000=8.33% cpu : usr=0.02%, sys=3.30%, ctx=64, 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=179182: Thu Aug 27 08:07:59 2026 read: IOPS=0, BW=939KiB/s (961kB/s)(5120KiB/5453msec) clat (msec): min=105, max=648, avg=385.84, stdev=255.50 lat (msec): min=105, max=648, avg=385.84, stdev=255.50 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 106], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1980, max= 4079, per=80.30%, avg=2698.00, stdev=1196.30, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1315KiB/s (1346kB/s)(7168KiB/5453msec); 0 zone resets clat (msec): min=118, max=1010, avg=483.09, stdev=333.74 lat (msec): min=118, max=1010, avg=483.58, stdev=333.79 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 153], | 30.00th=[ 209], 40.00th=[ 209], 50.00th=[ 567], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 676], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1965, max= 3200, per=47.77%, avg=2247.00, stdev=533.56, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=41.67%, 500=8.33%, 750=41.67%, 2000=8.33% cpu : usr=0.00%, sys=3.43%, ctx=75, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3361KiB/s (3441kB/s), 358KiB/s-1274KiB/s (367kB/s-1304kB/s), io=20.0MiB (20.0MB), run=4823-6094msec WRITE: bw=4705KiB/s (4818kB/s), 840KiB/s-1790KiB/s (860kB/s-1833kB/s), io=28.0MiB (29.4MB), run=4823-6094msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179184: Thu Aug 27 08:07:59 2026 read: IOPS=1, BW=1633KiB/s (1672kB/s)(7168KiB/4390msec) clat (usec): min=1515, max=386540, avg=236623.27, stdev=163913.41 lat (usec): min=1516, max=386543, avg=236625.19, stdev=163913.58 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1516], 10.00th=[ 1516], 20.00th=[ 2245], | 30.00th=[287310], 40.00th=[287310], 50.00th=[299893], 60.00th=[320865], | 70.00th=[320865], 80.00th=[358613], 90.00th=[387974], 95.00th=[387974], | 99.00th=[387974], 99.50th=[387974], 99.90th=[387974], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 1630, max= 3710, per=71.85%, avg=2613.25, stdev=966.85, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1166KiB/s (1194kB/s)(5120KiB/4390msec); 0 zone resets clat (msec): min=272, max=970, avg=545.91, stdev=285.86 lat (msec): min=272, max=970, avg=546.14, stdev=285.93 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 2015, max= 4087, per=53.25%, avg=2711.00, stdev=1191.68, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 4=8.33%, 500=58.33%, 750=16.67%, 1000=8.33% cpu : usr=0.02%, sys=10.30%, ctx=161, 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=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=179185: Thu Aug 27 08:07:59 2026 read: IOPS=0, BW=364KiB/s (372kB/s)(2048KiB/5631msec) clat (usec): min=1773, max=377674, avg=189723.80, stdev=265801.98 lat (usec): min=1774, max=377679, avg=189727.04, stdev=265804.50 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 1778], 10.00th=[ 1778], 20.00th=[ 1778], | 30.00th=[ 1778], 40.00th=[ 1778], 50.00th=[ 1778], 60.00th=[379585], | 70.00th=[379585], 80.00th=[379585], 90.00th=[379585], 95.00th=[379585], | 99.00th=[379585], 99.50th=[379585], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 1532, max= 1630, per=43.47%, avg=1581.00, stdev=69.30, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1819KiB/s (1862kB/s)(10.0MiB/5631msec); 0 zone resets clat (msec): min=164, max=1160, avg=524.60, stdev=310.70 lat (msec): min=164, max=1160, avg=524.78, stdev=310.60 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 182], | 30.00th=[ 300], 40.00th=[ 359], 50.00th=[ 405], 60.00th=[ 535], | 70.00th=[ 625], 80.00th=[ 718], 90.00th=[ 802], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 1630, max= 3900, per=43.50%, avg=2214.71, stdev=758.32, samples=7 iops : min= 1, max= 3, avg= 1.43, stdev= 0.79, samples=7 lat (msec) : 2=8.33%, 250=16.67%, 500=33.33%, 750=25.00%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=10.62%, ctx=149, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179186: Thu Aug 27 08:07:59 2026 read: IOPS=1, BW=1380KiB/s (1413kB/s)(6144KiB/4451msec) clat (msec): min=233, max=361, avg=311.67, stdev=46.78 lat (msec): min=233, max=361, avg=311.67, stdev=46.78 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 321], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1855, max= 2043, per=54.92%, avg=1997.40, stdev=80.43, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1380KiB/s (1413kB/s)(6144KiB/4451msec); 0 zone resets clat (msec): min=210, max=811, avg=422.72, stdev=245.30 lat (msec): min=210, max=811, avg=422.83, stdev=245.29 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 338], | 70.00th=[ 642], 80.00th=[ 642], 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= 1630, max= 3079, per=42.42%, avg=2159.60, stdev=542.41, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=25.00%, 500=58.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=10.99%, ctx=234, 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=179187: Thu Aug 27 08:07:59 2026 read: IOPS=0, BW=930KiB/s (953kB/s)(5120KiB/5503msec) clat (msec): min=6, max=331, avg=227.18, stdev=129.34 lat (msec): min=6, max=331, avg=227.19, stdev=129.34 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 7], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 245], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 2031, max= 6131, per=100.00%, avg=4081.00, stdev=2899.14, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1303KiB/s (1334kB/s)(7168KiB/5503msec); 0 zone resets clat (msec): min=246, max=971, avg=622.83, stdev=265.85 lat (msec): min=246, max=971, avg=623.58, stdev=266.33 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 326], | 30.00th=[ 575], 40.00th=[ 575], 50.00th=[ 617], 60.00th=[ 776], | 70.00th=[ 776], 80.00th=[ 844], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1587, max= 4096, per=43.20%, avg=2199.17, stdev=947.07, samples=6 iops : min= 1, max= 4, avg= 1.50, stdev= 1.22, samples=6 lat (msec) : 10=8.33%, 250=25.00%, 500=25.00%, 750=16.67%, 1000=25.00% cpu : usr=0.00%, sys=9.54%, ctx=152, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3637KiB/s (3724kB/s), 364KiB/s-1633KiB/s (372kB/s-1672kB/s), io=20.0MiB (20.0MB), run=4390-5631msec WRITE: bw=5092KiB/s (5214kB/s), 1166KiB/s-1819KiB/s (1194kB/s-1862kB/s), io=28.0MiB (29.4MB), run=4390-5631msec 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=179196: Thu Aug 27 08:08:19 2026 read: IOPS=0, BW=1989KiB/s (2036kB/s)(12.0MiB/6179msec) clat (msec): min=871, max=4059, avg=1956.69, stdev=1821.07 lat (msec): min=871, max=4059, avg=1956.69, stdev=1821.07 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 4044], 80.00th=[ 4044], 90.00th=[ 4044], 95.00th=[ 4044], | 99.00th=[ 4044], 99.50th=[ 4044], 99.90th=[ 4044], 99.95th=[ 4044], | 99.99th=[ 4044] bw ( KiB/s): min= 8110, max= 8159, per=100.00%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=10.38%, ctx=945, 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=179197: Thu Aug 27 08:08:19 2026 read: IOPS=0, BW=609KiB/s (624kB/s)(4096KiB/6723msec) clat (nsec): min=908253k, max=908253k, avg=908253086.00, stdev= 0.00 lat (nsec): min=908257k, max=908257k, avg=908256667.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 911], 5.00th=[ 911], 10.00th=[ 911], 20.00th=[ 911], | 30.00th=[ 911], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 911], 80.00th=[ 911], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1219KiB/s (1248kB/s)(8192KiB/6723msec); 0 zone resets clat (msec): min=1881, max=3728, avg=2804.63, stdev=1305.86 lat (msec): min=1881, max=3729, avg=2805.54, stdev=1306.58 clat percentiles (msec): | 1.00th=[ 1888], 5.00th=[ 1888], 10.00th=[ 1888], 20.00th=[ 1888], | 30.00th=[ 1888], 40.00th=[ 1888], 50.00th=[ 1888], 60.00th=[ 3742], | 70.00th=[ 3742], 80.00th=[ 3742], 90.00th=[ 3742], 95.00th=[ 3742], | 99.00th=[ 3742], 99.50th=[ 3742], 99.90th=[ 3742], 99.95th=[ 3742], | 99.99th=[ 3742] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.20%, ctx=229, 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=179198: Thu Aug 27 08:08:19 2026 write: IOPS=0, BW=2413KiB/s (2471kB/s)(12.0MiB/5092msec); 0 zone resets clat (msec): min=645, max=3450, avg=1635.07, stdev=1574.33 lat (msec): min=646, max=3453, avg=1636.58, stdev=1575.52 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 3440], 80.00th=[ 3440], 90.00th=[ 3440], 95.00th=[ 3440], | 99.00th=[ 3440], 99.50th=[ 3440], 99.90th=[ 3440], 99.95th=[ 3440], | 99.99th=[ 3440] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.52%, ctx=65, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179199: Thu Aug 27 08:08:19 2026 write: IOPS=0, BW=2352KiB/s (2408kB/s)(12.0MiB/5225msec); 0 zone resets clat (msec): min=348, max=3147, avg=1659.22, stdev=1408.10 lat (msec): min=352, max=3148, avg=1660.67, stdev=1406.54 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 1485], 50.00th=[ 1485], 60.00th=[ 1485], | 70.00th=[ 3138], 80.00th=[ 3138], 90.00th=[ 3138], 95.00th=[ 3138], | 99.00th=[ 3138], 99.50th=[ 3138], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min=16253, max=16253, per=100.00%, avg=16253.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.53%, ctx=72, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2437KiB/s (2495kB/s), 609KiB/s-1989KiB/s (624kB/s-2036kB/s), io=16.0MiB (16.8MB), run=6179-6723msec WRITE: bw=4874KiB/s (4991kB/s), 1219KiB/s-2413KiB/s (1248kB/s-2471kB/s), io=32.0MiB (33.6MB), run=5092-6723msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179200: Thu Aug 27 08:08:19 2026 read: IOPS=0, BW=1937KiB/s (1984kB/s)(12.0MiB/6343msec) clat (msec): min=289, max=4612, avg=2026.77, stdev=2283.30 lat (msec): min=289, max=4612, avg=2026.77, stdev=2283.30 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 4597], 80.00th=[ 4597], 90.00th=[ 4597], 95.00th=[ 4597], | 99.00th=[ 4597], 99.50th=[ 4597], 99.90th=[ 4597], 99.95th=[ 4597], | 99.99th=[ 4597] bw ( KiB/s): min= 8110, max= 8192, per=100.00%, avg=8151.00, stdev=57.98, 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=2.29%, ctx=79, 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=179201: Thu Aug 27 08:08:19 2026 read: IOPS=0, BW=648KiB/s (663kB/s)(4096KiB/6323msec) clat (nsec): min=4019.1M, max=4019.1M, avg=4019085183.00, stdev= 0.00 lat (nsec): min=4019.1M, max=4019.1M, avg=4019090817.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4010], 5.00th=[ 4010], 10.00th=[ 4010], 20.00th=[ 4010], | 30.00th=[ 4010], 40.00th=[ 4010], 50.00th=[ 4010], 60.00th=[ 4010], | 70.00th=[ 4010], 80.00th=[ 4010], 90.00th=[ 4010], 95.00th=[ 4010], | 99.00th=[ 4010], 99.50th=[ 4010], 99.90th=[ 4010], 99.95th=[ 4010], | 99.99th=[ 4010] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1296KiB/s (1327kB/s)(8192KiB/6323msec); 0 zone resets clat (msec): min=939, max=1283, avg=1111.10, stdev=243.28 lat (msec): min=939, max=1283, avg=1111.81, stdev=243.51 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.06%, ctx=49, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179202: Thu Aug 27 08:08:19 2026 write: IOPS=0, BW=1908KiB/s (1954kB/s)(12.0MiB/6439msec); 0 zone resets clat (msec): min=616, max=4357, avg=2056.65, stdev=2013.23 lat (msec): min=616, max=4357, avg=2057.19, stdev=2013.37 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 4329], 80.00th=[ 4329], 90.00th=[ 4329], 95.00th=[ 4329], | 99.00th=[ 4329], 99.50th=[ 4329], 99.90th=[ 4329], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 8110, max= 8192, per=100.00%, avg=8151.00, stdev=57.98, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.83%, ctx=91, 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=179203: Thu Aug 27 08:08:19 2026 write: IOPS=0, BW=2255KiB/s (2309kB/s)(12.0MiB/5450msec); 0 zone resets clat (msec): min=302, max=3736, avg=1747.84, stdev=1780.64 lat (msec): min=303, max=3739, avg=1749.40, stdev=1781.70 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 3742], 80.00th=[ 3742], 90.00th=[ 3742], 95.00th=[ 3742], | 99.00th=[ 3742], 99.50th=[ 3742], 99.90th=[ 3742], 99.95th=[ 3742], | 99.99th=[ 3742] bw ( KiB/s): min= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, 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=4.96%, ctx=144, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2583KiB/s (2645kB/s), 648KiB/s-1937KiB/s (663kB/s-1984kB/s), io=16.0MiB (16.8MB), run=6323-6343msec WRITE: bw=5089KiB/s (5211kB/s), 1296KiB/s-2255KiB/s (1327kB/s-2309kB/s), io=32.0MiB (33.6MB), run=5450-6439msec