== sanity test 398b: DIO and buffer IO race ============== 03:11:14 (1790925074) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.33931 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=175290: Fri Oct 2 03:13:44 2026 read: IOPS=11, BW=47.5KiB/s (48.7kB/s)(5992KiB/126117msec) clat (usec): min=34, max=305361, avg=40930.09, stdev=30602.90 lat (usec): min=35, max=305363, avg=40934.22, stdev=30605.34 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 68], 10.00th=[ 1401], 20.00th=[ 18744], | 30.00th=[ 23725], 40.00th=[ 29230], 50.00th=[ 35390], 60.00th=[ 41681], | 70.00th=[ 50594], 80.00th=[ 61604], 90.00th=[ 80217], 95.00th=[ 94897], | 99.00th=[145753], 99.50th=[162530], 99.90th=[263193], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 7, max= 112, per=25.24%, avg=47.19, stdev=20.36, samples=248 iops : min= 1, max= 28, avg=11.14, stdev= 5.12, samples=248 write: IOPS=12, BW=49.9KiB/s (51.1kB/s)(6296KiB/126117msec); 0 zone resets clat (usec): min=775, max=870571, avg=40909.16, stdev=45395.92 lat (usec): min=775, max=870573, avg=40911.20, stdev=45395.98 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1303], 10.00th=[ 1565], 20.00th=[ 4178], | 30.00th=[ 8586], 40.00th=[ 20055], 50.00th=[ 31065], 60.00th=[ 41157], | 70.00th=[ 54789], 80.00th=[ 69731], 90.00th=[ 93848], 95.00th=[117965], | 99.00th=[160433], 99.50th=[210764], 99.90th=[299893], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 7, max= 146, per=25.40%, avg=49.79, stdev=20.20, samples=247 iops : min= 1, max= 36, avg=11.79, stdev= 5.09, samples=247 lat (usec) : 50=0.46%, 100=4.00%, 250=0.26%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.16% lat (msec) : 2=6.32%, 4=3.65%, 10=6.93%, 20=9.67%, 50=36.69% lat (msec) : 100=25.46%, 250=6.09%, 500=0.20%, 1000=0.03% cpu : usr=0.10%, sys=5.70%, ctx=6631, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=175291: Fri Oct 2 03:13:44 2026 read: IOPS=11, BW=46.7KiB/s (47.8kB/s)(5940KiB/127295msec) clat (usec): min=31, max=562869, avg=41080.42, stdev=32331.14 lat (usec): min=31, max=562870, avg=41089.39, stdev=32332.97 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 66], 10.00th=[ 371], 20.00th=[ 18482], | 30.00th=[ 23725], 40.00th=[ 29230], 50.00th=[ 34866], 60.00th=[ 41681], | 70.00th=[ 51643], 80.00th=[ 62129], 90.00th=[ 80217], 95.00th=[ 95945], | 99.00th=[127402], 99.50th=[154141], 99.90th=[233833], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 7, max= 111, per=24.86%, avg=46.49, stdev=19.81, samples=249 iops : min= 1, max= 27, avg=10.96, stdev= 4.98, samples=249 write: IOPS=12, BW=49.9KiB/s (51.1kB/s)(6348KiB/127295msec); 0 zone resets clat (usec): min=953, max=915664, avg=41476.90, stdev=47040.42 lat (usec): min=955, max=915665, avg=41483.71, stdev=47040.90 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1287], 10.00th=[ 1598], 20.00th=[ 4686], | 30.00th=[ 9241], 40.00th=[ 20317], 50.00th=[ 31065], 60.00th=[ 41157], | 70.00th=[ 53216], 80.00th=[ 70779], 90.00th=[ 95945], 95.00th=[120062], | 99.00th=[170918], 99.50th=[214959], 99.90th=[425722], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 7, max= 134, per=25.19%, avg=49.36, stdev=22.09, samples=250 iops : min= 1, max= 33, avg=11.68, stdev= 5.56, samples=250 lat (usec) : 50=0.46%, 100=4.07%, 250=0.23%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=5.92%, 4=3.68%, 10=6.93%, 20=9.86%, 50=36.65% lat (msec) : 100=25.36%, 250=6.35%, 500=0.13%, 750=0.03%, 1000=0.03% cpu : usr=0.09%, sys=5.41%, ctx=6592, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=175292: Fri Oct 2 03:13:44 2026 read: IOPS=11, BW=47.2KiB/s (48.3kB/s)(6028KiB/127750msec) clat (usec): min=29, max=268418, avg=40227.73, stdev=30172.92 lat (usec): min=29, max=268421, avg=40232.63, stdev=30172.48 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 65], 10.00th=[ 123], 20.00th=[ 17695], | 30.00th=[ 23725], 40.00th=[ 28705], 50.00th=[ 34341], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 61080], 90.00th=[ 78119], 95.00th=[ 95945], | 99.00th=[137364], 99.50th=[162530], 99.90th=[235930], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 7, max= 111, per=25.30%, avg=47.32, stdev=20.77, samples=248 iops : min= 1, max= 27, avg=11.18, stdev= 5.23, samples=248 write: IOPS=12, BW=49.0KiB/s (50.2kB/s)(6260KiB/127750msec); 0 zone resets clat (usec): min=752, max=950874, avg=42520.45, stdev=49333.42 lat (usec): min=753, max=950880, avg=42523.98, stdev=49332.83 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1270], 10.00th=[ 1532], 20.00th=[ 4621], | 30.00th=[ 10421], 40.00th=[ 22414], 50.00th=[ 33162], 60.00th=[ 42206], | 70.00th=[ 55313], 80.00th=[ 69731], 90.00th=[ 92799], 95.00th=[120062], | 99.00th=[196084], 99.50th=[267387], 99.90th=[408945], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 7, max= 143, per=24.89%, avg=48.78, stdev=20.18, samples=250 iops : min= 1, max= 35, avg=11.54, stdev= 5.07, samples=250 lat (usec) : 50=0.72%, 100=4.10%, 250=0.20%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.26% lat (msec) : 2=6.05%, 4=3.32%, 10=5.92%, 20=10.19%, 50=37.17% lat (msec) : 100=25.72%, 250=5.79%, 500=0.33%, 1000=0.03% cpu : usr=0.11%, sys=5.41%, ctx=6554, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=175293: Fri Oct 2 03:13:44 2026 read: IOPS=12, BW=48.1KiB/s (49.2kB/s)(6052KiB/125842msec) clat (usec): min=31, max=481114, avg=40604.12, stdev=34677.04 lat (usec): min=31, max=481116, avg=40607.91, stdev=34676.49 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 65], 10.00th=[ 82], 20.00th=[ 17957], | 30.00th=[ 23462], 40.00th=[ 28443], 50.00th=[ 33817], 60.00th=[ 40633], | 70.00th=[ 49021], 80.00th=[ 60556], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[143655], 99.50th=[179307], 99.90th=[400557], 99.95th=[480248], | 99.99th=[480248] bw ( KiB/s): min= 7, max= 111, per=25.75%, avg=48.15, stdev=20.78, samples=245 iops : min= 1, max= 27, avg=11.38, stdev= 5.24, samples=245 write: IOPS=12, BW=49.6KiB/s (50.7kB/s)(6236KiB/125842msec); 0 zone resets clat (usec): min=785, max=856297, avg=40992.63, stdev=46264.89 lat (usec): min=786, max=856303, avg=40994.62, stdev=46264.91 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1270], 10.00th=[ 1516], 20.00th=[ 3982], | 30.00th=[ 8586], 40.00th=[ 19006], 50.00th=[ 30278], 60.00th=[ 40109], | 70.00th=[ 53740], 80.00th=[ 70779], 90.00th=[ 96994], 95.00th=[120062], | 99.00th=[177210], 99.50th=[193987], 99.90th=[325059], 99.95th=[859833], | 99.99th=[859833] bw ( KiB/s): min= 7, max= 119, per=25.22%, avg=49.43, stdev=22.23, samples=246 iops : min= 1, max= 29, avg=11.70, stdev= 5.58, samples=246 lat (usec) : 50=0.55%, 100=4.65%, 250=0.49%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.26% lat (msec) : 2=6.45%, 4=3.61%, 10=6.28%, 20=9.86%, 50=36.56% lat (msec) : 100=24.19%, 250=6.64%, 500=0.20%, 1000=0.03% cpu : usr=0.09%, sys=5.48%, ctx=6410, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=188KiB/s (192kB/s), 46.7KiB/s-48.1KiB/s (47.8kB/s-49.2kB/s), io=23.4MiB (24.6MB), run=125842-127750msec WRITE: bw=197KiB/s (202kB/s), 49.0KiB/s-49.9KiB/s (50.2kB/s-51.1kB/s), io=24.6MiB (25.7MB), run=125842-127750msec rand-rw: (groupid=0, jobs=1): err= 0: pid=175294: Fri Oct 2 03:15:42 2026 read: IOPS=6, BW=24.5KiB/s (25.0kB/s)(5992KiB/245001msec) clat (msec): min=4, max=1008, avg=33.40, stdev=45.01 lat (msec): min=4, max=1008, avg=33.40, stdev=45.01 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 46], 90.00th=[ 72], 95.00th=[ 107], | 99.00th=[ 194], 99.50th=[ 234], 99.90th=[ 401], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 104, per=27.26%, avg=26.45, stdev=18.98, samples=438 iops : min= 1, max= 26, avg= 5.98, stdev= 4.81, samples=438 write: IOPS=6, BW=25.7KiB/s (26.3kB/s)(6296KiB/245001msec); 0 zone resets clat (msec): min=32, max=551, avg=123.58, stdev=62.23 lat (msec): min=32, max=551, avg=123.59, stdev=62.22 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 75], | 30.00th=[ 85], 40.00th=[ 95], 50.00th=[ 106], 60.00th=[ 121], | 70.00th=[ 142], 80.00th=[ 167], 90.00th=[ 207], 95.00th=[ 241], | 99.00th=[ 338], 99.50th=[ 372], 99.90th=[ 510], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 72, per=24.90%, avg=25.40, stdev=12.54, samples=478 iops : min= 1, max= 18, avg= 5.72, stdev= 3.22, samples=478 lat (msec) : 10=7.10%, 20=18.00%, 50=16.28%, 100=27.83%, 250=28.29% lat (msec) : 500=2.41%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.15%, ctx=5175, 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=175295: Fri Oct 2 03:15:42 2026 read: IOPS=6, BW=24.4KiB/s (24.0kB/s)(5940KiB/243755msec) clat (msec): min=4, max=935, avg=31.29, stdev=40.91 lat (msec): min=4, max=935, avg=31.29, stdev=40.91 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 43], 90.00th=[ 68], 95.00th=[ 97], | 99.00th=[ 171], 99.50th=[ 213], 99.90th=[ 443], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 112, per=28.41%, avg=27.56, stdev=18.99, samples=417 iops : min= 1, max= 28, avg= 6.27, stdev= 4.80, samples=417 write: IOPS=6, BW=26.0KiB/s (26.7kB/s)(6348KiB/243755msec); 0 zone resets clat (msec): min=29, max=576, avg=124.13, stdev=64.73 lat (msec): min=29, max=576, avg=124.14, stdev=64.73 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 75], | 30.00th=[ 85], 40.00th=[ 95], 50.00th=[ 107], 60.00th=[ 121], | 70.00th=[ 138], 80.00th=[ 169], 90.00th=[ 211], 95.00th=[ 241], | 99.00th=[ 347], 99.50th=[ 397], 99.90th=[ 493], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 72, per=25.23%, avg=25.73, stdev=12.73, samples=476 iops : min= 1, max= 18, avg= 5.81, stdev= 3.27, samples=476 lat (msec) : 10=6.51%, 20=20.02%, 50=15.59%, 100=27.05%, 250=28.45% lat (msec) : 500=2.31%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.18%, ctx=5125, 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=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=175296: Fri Oct 2 03:15:42 2026 read: IOPS=6, BW=24.6KiB/s (25.2kB/s)(6028KiB/245191msec) clat (msec): min=5, max=384, avg=33.13, stdev=35.32 lat (msec): min=5, max=384, avg=33.13, stdev=35.32 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 33], 80.00th=[ 48], 90.00th=[ 79], 95.00th=[ 101], | 99.00th=[ 159], 99.50th=[ 215], 99.90th=[ 368], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 103, per=27.71%, avg=26.88, stdev=18.72, samples=434 iops : min= 1, max= 25, avg= 6.09, stdev= 4.74, samples=434 write: IOPS=6, BW=25.5KiB/s (26.1kB/s)(6260KiB/245191msec); 0 zone resets clat (msec): min=29, max=1018, avg=124.56, stdev=66.93 lat (msec): min=29, max=1018, avg=124.56, stdev=66.93 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 75], | 30.00th=[ 86], 40.00th=[ 95], 50.00th=[ 107], 60.00th=[ 122], | 70.00th=[ 138], 80.00th=[ 165], 90.00th=[ 213], 95.00th=[ 251], | 99.00th=[ 351], 99.50th=[ 376], 99.90th=[ 550], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 64, per=24.78%, avg=25.28, stdev=12.60, samples=478 iops : min= 1, max= 16, avg= 5.69, stdev= 3.23, samples=478 lat (msec) : 10=6.87%, 20=17.84%, 50=16.34%, 100=27.83%, 250=28.29% lat (msec) : 500=2.77%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.19%, ctx=5089, 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=175297: Fri Oct 2 03:15:42 2026 read: IOPS=6, BW=24.7KiB/s (25.3kB/s)(6052KiB/244813msec) clat (msec): min=4, max=278, avg=31.83, stdev=32.89 lat (msec): min=4, max=278, avg=31.84, stdev=32.89 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 45], 90.00th=[ 78], 95.00th=[ 99], | 99.00th=[ 163], 99.50th=[ 188], 99.90th=[ 262], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 7, max= 120, per=27.60%, avg=26.78, stdev=19.18, samples=438 iops : min= 1, max= 30, avg= 6.07, stdev= 4.88, samples=438 write: IOPS=6, BW=25.5KiB/s (26.1kB/s)(6236KiB/244813msec); 0 zone resets clat (msec): min=32, max=1034, avg=125.89, stdev=68.69 lat (msec): min=32, max=1034, avg=125.89, stdev=68.69 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 56], 10.00th=[ 65], 20.00th=[ 75], | 30.00th=[ 86], 40.00th=[ 96], 50.00th=[ 107], 60.00th=[ 122], | 70.00th=[ 140], 80.00th=[ 169], 90.00th=[ 213], 95.00th=[ 255], | 99.00th=[ 347], 99.50th=[ 393], 99.90th=[ 575], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 64, per=24.62%, avg=25.12, stdev=12.58, samples=480 iops : min= 1, max= 16, avg= 5.65, stdev= 3.22, samples=480 lat (msec) : 10=6.84%, 20=18.46%, 50=16.47%, 100=27.60%, 250=27.93% lat (msec) : 500=2.64%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.20%, ctx=5233, 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=97.9KiB/s (100kB/s), 24.4KiB/s-24.7KiB/s (24.0kB/s-25.3kB/s), io=23.4MiB (24.6MB), run=243755-245191msec WRITE: bw=103KiB/s (105kB/s), 25.5KiB/s-26.0KiB/s (26.1kB/s-26.7kB/s), io=24.6MiB (25.7MB), run=243755-245191msec 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=175349: Fri Oct 2 03:16:20 2026 read: IOPS=15, BW=247KiB/s (253kB/s)(5920KiB/23920msec) clat (usec): min=35, max=233464, avg=32593.18, stdev=30933.36 lat (usec): min=35, max=233466, avg=32594.33, stdev=30933.39 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 53], 10.00th=[ 60], 20.00th=[ 78], | 30.00th=[ 15664], 40.00th=[ 22414], 50.00th=[ 28181], 60.00th=[ 33817], | 70.00th=[ 41157], 80.00th=[ 51643], 90.00th=[ 70779], 95.00th=[ 86508], | 99.00th=[131597], 99.50th=[189793], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 93, max= 439, per=26.48%, avg=247.87, stdev=104.03, samples=47 iops : min= 5, max= 27, avg=14.77, stdev= 6.59, samples=47 write: IOPS=16, BW=266KiB/s (273kB/s)(6368KiB/23920msec); 0 zone resets clat (usec): min=1255, max=153430, avg=29695.29, stdev=33396.79 lat (usec): min=1256, max=153431, avg=29698.01, stdev=33396.76 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1713], 10.00th=[ 2057], 20.00th=[ 4047], | 30.00th=[ 5866], 40.00th=[ 10290], 50.00th=[ 15139], 60.00th=[ 25297], | 70.00th=[ 34866], 80.00th=[ 53216], 90.00th=[ 79168], 95.00th=[ 98042], | 99.00th=[145753], 99.50th=[147850], 99.90th=[154141], 99.95th=[154141], | 99.99th=[154141] bw ( KiB/s): min= 63, max= 690, per=27.00%, avg=265.94, stdev=124.12, samples=47 iops : min= 3, max= 43, avg=15.91, stdev= 7.86, samples=47 lat (usec) : 50=1.56%, 100=9.64%, 250=0.39%, 500=0.26% lat (msec) : 2=5.34%, 4=5.21%, 10=10.81%, 20=12.76%, 50=32.03% lat (msec) : 100=18.36%, 250=3.65% cpu : usr=0.05%, sys=6.38%, ctx=1297, 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=175350: Fri Oct 2 03:16:20 2026 read: IOPS=14, BW=231KiB/s (237kB/s)(5744KiB/24823msec) clat (usec): min=36, max=190141, avg=35034.08, stdev=31321.43 lat (usec): min=36, max=190143, avg=35035.38, stdev=31321.48 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 57], 10.00th=[ 61], 20.00th=[ 80], | 30.00th=[ 19268], 40.00th=[ 25297], 50.00th=[ 31327], 60.00th=[ 38011], | 70.00th=[ 46400], 80.00th=[ 54789], 90.00th=[ 71828], 95.00th=[ 85459], | 99.00th=[170918], 99.50th=[187696], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 28, max= 470, per=24.62%, avg=230.46, stdev=105.28, samples=48 iops : min= 1, max= 29, avg=13.67, stdev= 6.67, samples=48 write: IOPS=16, BW=264KiB/s (270kB/s)(6544KiB/24823msec); 0 zone resets clat (usec): min=1336, max=230978, avg=29486.70, stdev=33755.79 lat (usec): min=1339, max=230981, avg=29498.56, stdev=33749.21 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1663], 10.00th=[ 1942], 20.00th=[ 3589], | 30.00th=[ 5997], 40.00th=[ 9765], 50.00th=[ 17433], 60.00th=[ 26084], | 70.00th=[ 35390], 80.00th=[ 52167], 90.00th=[ 76022], 95.00th=[ 92799], | 99.00th=[139461], 99.50th=[177210], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 93, max= 415, per=26.45%, avg=260.56, stdev=80.39, samples=48 iops : min= 5, max= 25, avg=15.56, stdev= 5.04, samples=48 lat (usec) : 50=1.04%, 100=8.72%, 250=0.78%, 1000=0.13% lat (msec) : 2=5.73%, 4=5.60%, 10=10.81%, 20=10.03%, 50=33.98% lat (msec) : 100=19.66%, 250=3.52% cpu : usr=0.09%, sys=6.37%, ctx=1330, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=175351: Fri Oct 2 03:16:20 2026 read: IOPS=15, BW=245KiB/s (250kB/s)(6256KiB/25580msec) clat (usec): min=26, max=328852, avg=36157.66, stdev=31201.59 lat (usec): min=26, max=328853, avg=36160.35, stdev=31201.05 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 141], | 30.00th=[ 22414], 40.00th=[ 29754], 50.00th=[ 35914], 60.00th=[ 40109], | 70.00th=[ 46400], 80.00th=[ 56361], 90.00th=[ 66847], 95.00th=[ 80217], | 99.00th=[149947], 99.50th=[177210], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 56, max= 447, per=26.14%, avg=244.64, stdev=90.21, samples=50 iops : min= 3, max= 27, avg=14.58, stdev= 5.70, samples=50 write: IOPS=14, BW=236KiB/s (241kB/s)(6032KiB/25580msec); 0 zone resets clat (usec): min=1246, max=168962, avg=29981.49, stdev=32824.05 lat (usec): min=1247, max=168963, avg=29989.24, stdev=32820.39 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1663], 10.00th=[ 2311], 20.00th=[ 4424], | 30.00th=[ 7701], 40.00th=[ 11731], 50.00th=[ 16909], 60.00th=[ 25297], | 70.00th=[ 35390], 80.00th=[ 53740], 90.00th=[ 74974], 95.00th=[ 92799], | 99.00th=[152044], 99.50th=[160433], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 63, max= 429, per=23.54%, avg=231.86, stdev=101.04, samples=50 iops : min= 3, max= 26, avg=13.76, stdev= 6.36, samples=50 lat (usec) : 50=1.43%, 100=8.20%, 250=1.04%, 1000=0.13% lat (msec) : 2=3.91%, 4=5.21%, 10=9.11%, 20=11.85%, 50=34.64% lat (msec) : 100=20.96%, 250=3.39%, 500=0.13% cpu : usr=0.07%, sys=6.29%, ctx=1413, 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=175353: Fri Oct 2 03:16:20 2026 read: IOPS=15, BW=247KiB/s (253kB/s)(6032KiB/24431msec) clat (usec): min=40, max=194642, avg=34707.11, stdev=32502.16 lat (usec): min=40, max=194644, avg=34717.25, stdev=32496.28 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 51], 10.00th=[ 60], 20.00th=[ 75], | 30.00th=[ 15533], 40.00th=[ 24249], 50.00th=[ 31065], 60.00th=[ 36439], | 70.00th=[ 44303], 80.00th=[ 58459], 90.00th=[ 73925], 95.00th=[ 91751], | 99.00th=[162530], 99.50th=[181404], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 28, max= 480, per=26.10%, avg=244.33, stdev=102.12, samples=48 iops : min= 1, max= 30, avg=14.54, stdev= 6.46, samples=48 write: IOPS=16, BW=256KiB/s (262kB/s)(6256KiB/24431msec); 0 zone resets clat (usec): min=1217, max=217911, avg=28668.01, stdev=33052.41 lat (usec): min=1218, max=217913, avg=28670.07, stdev=33052.46 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1631], 10.00th=[ 1975], 20.00th=[ 3687], | 30.00th=[ 5997], 40.00th=[ 9241], 50.00th=[ 15795], 60.00th=[ 24511], | 70.00th=[ 33817], 80.00th=[ 55313], 90.00th=[ 76022], 95.00th=[ 92799], | 99.00th=[158335], 99.50th=[185598], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 31, max= 564, per=25.92%, avg=255.29, stdev=109.26, samples=48 iops : min= 1, max= 35, avg=15.25, stdev= 6.92, samples=48 lat (usec) : 50=2.21%, 100=9.77%, 250=0.52%, 500=0.13%, 1000=0.13% lat (msec) : 2=5.86%, 4=5.86%, 10=9.64%, 20=10.55%, 50=31.38% lat (msec) : 100=20.57%, 250=3.39% cpu : usr=0.08%, sys=6.21%, ctx=1337, 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=936KiB/s (959kB/s), 231KiB/s-247KiB/s (237kB/s-253kB/s), io=23.4MiB (24.5MB), run=23920-25580msec WRITE: bw=985KiB/s (1009kB/s), 236KiB/s-266KiB/s (241kB/s-273kB/s), io=24.6MiB (25.8MB), run=23920-25580msec rand-rw: (groupid=0, jobs=1): err= 0: pid=175354: Fri Oct 2 03:16:56 2026 read: IOPS=6, BW=96.4KiB/s (98.7kB/s)(5920KiB/61421msec) clat (msec): min=5, max=361, avg=34.84, stdev=36.22 lat (msec): min=5, max=361, avg=34.85, stdev=36.22 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 42], 90.00th=[ 70], 95.00th=[ 96], | 99.00th=[ 190], 99.50th=[ 230], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 30, max= 320, per=26.01%, avg=101.18, stdev=65.29, samples=115 iops : min= 1, max= 20, avg= 5.58, stdev= 4.12, samples=115 write: IOPS=6, BW=104KiB/s (106kB/s)(6368KiB/61421msec); 0 zone resets clat (msec): min=36, max=374, avg=121.24, stdev=53.43 lat (msec): min=36, max=374, avg=121.25, stdev=53.45 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 81], | 30.00th=[ 87], 40.00th=[ 96], 50.00th=[ 104], 60.00th=[ 120], | 70.00th=[ 138], 80.00th=[ 163], 90.00th=[ 197], 95.00th=[ 234], | 99.00th=[ 305], 99.50th=[ 313], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 31, max= 222, per=25.64%, avg=105.11, stdev=43.28, samples=119 iops : min= 1, max= 13, avg= 5.82, stdev= 2.81, samples=119 lat (msec) : 10=2.08%, 20=16.41%, 50=22.66%, 100=28.52%, 250=28.52% lat (msec) : 500=1.82% cpu : usr=0.04%, sys=1.40%, ctx=1311, 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=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=175355: Fri Oct 2 03:16:56 2026 read: IOPS=5, BW=93.6KiB/s (95.9kB/s)(5744KiB/61352msec) clat (msec): min=7, max=252, avg=35.40, stdev=35.95 lat (msec): min=7, max=252, avg=35.40, stdev=35.94 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 44], 90.00th=[ 84], 95.00th=[ 121], | 99.00th=[ 188], 99.50th=[ 211], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 28, max= 319, per=27.25%, avg=106.02, stdev=66.06, samples=106 iops : min= 1, max= 19, avg= 5.89, stdev= 4.15, samples=106 write: IOPS=6, BW=107KiB/s (109kB/s)(6544KiB/61352msec); 0 zone resets clat (msec): min=30, max=368, avg=117.79, stdev=56.47 lat (msec): min=30, max=368, avg=117.79, stdev=56.47 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 78], | 30.00th=[ 84], 40.00th=[ 94], 50.00th=[ 104], 60.00th=[ 115], | 70.00th=[ 130], 80.00th=[ 153], 90.00th=[ 194], 95.00th=[ 245], | 99.00th=[ 317], 99.50th=[ 330], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 31, max= 223, per=26.12%, avg=107.11, stdev=48.21, samples=120 iops : min= 1, max= 13, avg= 5.95, stdev= 3.11, samples=120 lat (msec) : 10=3.52%, 20=14.84%, 50=22.40%, 100=27.47%, 250=29.30% lat (msec) : 500=2.47% cpu : usr=0.05%, sys=1.26%, ctx=1303, 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=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=175356: Fri Oct 2 03:16:56 2026 read: IOPS=6, BW=106KiB/s (108kB/s)(6256KiB/59293msec) clat (msec): min=5, max=183, avg=31.62, stdev=27.22 lat (msec): min=5, max=183, avg=31.62, stdev=27.22 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 44], 90.00th=[ 64], 95.00th=[ 101], | 99.00th=[ 129], 99.50th=[ 155], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 31, max= 416, per=29.20%, avg=113.57, stdev=83.46, samples=109 iops : min= 1, max= 26, avg= 6.36, stdev= 5.36, samples=109 write: IOPS=6, BW=102KiB/s (104kB/s)(6032KiB/59293msec); 0 zone resets clat (msec): min=42, max=394, avg=123.32, stdev=60.22 lat (msec): min=42, max=394, avg=123.32, stdev=60.22 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 75], | 30.00th=[ 86], 40.00th=[ 97], 50.00th=[ 107], 60.00th=[ 120], | 70.00th=[ 136], 80.00th=[ 167], 90.00th=[ 207], 95.00th=[ 239], | 99.00th=[ 376], 99.50th=[ 380], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 30, max= 192, per=24.88%, avg=102.01, stdev=43.36, samples=116 iops : min= 1, max= 12, avg= 5.63, stdev= 2.78, samples=116 lat (msec) : 10=3.78%, 20=18.23%, 50=21.88%, 100=26.69%, 250=27.34% lat (msec) : 500=2.08% cpu : usr=0.04%, sys=1.34%, ctx=1404, 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=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=175357: Fri Oct 2 03:16:56 2026 read: IOPS=6, BW=99.6KiB/s (102kB/s)(6032KiB/60587msec) clat (msec): min=5, max=357, avg=35.37, stdev=38.61 lat (msec): min=5, max=357, avg=35.37, stdev=38.61 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 44], 90.00th=[ 81], 95.00th=[ 117], | 99.00th=[ 197], 99.50th=[ 211], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 350, per=28.35%, avg=110.28, stdev=69.72, samples=108 iops : min= 1, max= 21, avg= 6.15, stdev= 4.45, samples=108 write: IOPS=6, BW=103KiB/s (106kB/s)(6256KiB/60587msec); 0 zone resets clat (msec): min=32, max=337, avg=120.53, stdev=53.39 lat (msec): min=32, max=337, avg=120.54, stdev=53.39 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 56], 10.00th=[ 68], 20.00th=[ 78], | 30.00th=[ 87], 40.00th=[ 99], 50.00th=[ 110], 60.00th=[ 123], | 70.00th=[ 136], 80.00th=[ 157], 90.00th=[ 186], 95.00th=[ 232], | 99.00th=[ 309], 99.50th=[ 334], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 28, max= 192, per=25.57%, avg=104.86, stdev=43.98, samples=118 iops : min= 1, max= 12, avg= 5.81, stdev= 2.80, samples=118 lat (msec) : 10=4.56%, 20=17.71%, 50=19.53%, 100=24.61%, 250=31.64% lat (msec) : 500=1.95% cpu : usr=0.05%, sys=1.32%, ctx=1304, 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=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=390KiB/s (399kB/s), 93.6KiB/s-106KiB/s (95.9kB/s-108kB/s), io=23.4MiB (24.5MB), run=59293-61421msec WRITE: bw=410KiB/s (420kB/s), 102KiB/s-107KiB/s (104kB/s-109kB/s), io=24.6MiB (25.8MB), run=59293-61421msec 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=175372: Fri Oct 2 03:17:13 2026 read: IOPS=1, BW=1210KiB/s (1239kB/s)(7168KiB/5922msec) clat (msec): min=142, max=2617, avg=580.31, stdev=903.40 lat (msec): min=142, max=2617, avg=580.32, stdev=903.40 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 146], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 234], 60.00th=[ 268], | 70.00th=[ 268], 80.00th=[ 430], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 1551, max= 4096, per=95.40%, avg=2906.00, stdev=1299.85, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=0, BW=865KiB/s (885kB/s)(5120KiB/5922msec); 0 zone resets clat (msec): min=122, max=790, avg=357.58, stdev=272.99 lat (msec): min=122, max=790, avg=357.67, stdev=273.01 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 330], 60.00th=[ 330], | 70.00th=[ 414], 80.00th=[ 414], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1892, max= 4079, per=58.96%, avg=2514.50, stdev=1045.45, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 250=50.00%, 500=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.32%, ctx=684, 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=175373: Fri Oct 2 03:17:13 2026 read: IOPS=0, BW=305KiB/s (312kB/s)(2048KiB/6722msec) clat (msec): min=155, max=270, avg=213.26, stdev=81.50 lat (msec): min=155, max=270, avg=213.26, stdev=81.49 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 157], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 271], 95.00th=[ 271], | 99.00th=[ 271], 99.50th=[ 271], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 1568, max= 2039, per=59.21%, avg=1803.50, stdev=333.05, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1523KiB/s (1560kB/s)(10.0MiB/6722msec); 0 zone resets clat (msec): min=127, max=3123, avg=622.38, stdev=891.50 lat (msec): min=127, max=3124, avg=622.46, stdev=891.49 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 190], | 30.00th=[ 232], 40.00th=[ 249], 50.00th=[ 409], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 422], 90.00th=[ 642], 95.00th=[ 3138], | 99.00th=[ 3138], 99.50th=[ 3138], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min= 1928, max= 4063, per=73.87%, avg=3150.60, stdev=1070.67, samples=5 iops : min= 1, max= 3, avg= 2.20, stdev= 1.10, samples=5 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=8.02%, ctx=151, 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=175374: Fri Oct 2 03:17:13 2026 read: IOPS=1, BW=1030KiB/s (1055kB/s)(6144KiB/5966msec) clat (usec): min=518, max=470597, avg=254868.63, stdev=203014.97 lat (usec): min=519, max=470599, avg=254869.92, stdev=203015.04 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[325059], 50.00th=[325059], 60.00th=[350225], | 70.00th=[379585], 80.00th=[379585], 90.00th=[471860], 95.00th=[471860], | 99.00th=[471860], 99.50th=[471860], 99.90th=[471860], 99.95th=[471860], | 99.99th=[471860] bw ( KiB/s): min= 1892, max= 4079, per=80.99%, avg=2467.00, stdev=1075.13, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1030KiB/s (1055kB/s)(6144KiB/5966msec); 0 zone resets clat (msec): min=149, max=3205, avg=734.86, stdev=1211.83 lat (msec): min=150, max=3205, avg=735.01, stdev=1211.78 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 236], 50.00th=[ 236], 60.00th=[ 262], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 3205], 95.00th=[ 3205], | 99.00th=[ 3205], 99.50th=[ 3205], 99.90th=[ 3205], 99.95th=[ 3205], | 99.99th=[ 3205] bw ( KiB/s): min= 1928, max= 3084, per=51.86%, avg=2211.80, stdev=489.88, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=16.67% lat (msec) : 250=25.00%, 500=50.00%, >=2000=8.33% cpu : usr=0.08%, sys=6.61%, ctx=214, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=175375: Fri Oct 2 03:17:13 2026 read: IOPS=0, BW=941KiB/s (964kB/s)(5120KiB/5439msec) clat (msec): min=2, max=241, avg=119.73, stdev=111.09 lat (msec): min=2, max=241, avg=119.73, stdev=111.09 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 3], | 30.00th=[ 8], 40.00th=[ 8], 50.00th=[ 142], 60.00th=[ 142], | 70.00th=[ 207], 80.00th=[ 207], 90.00th=[ 243], 95.00th=[ 243], | 99.00th=[ 243], 99.50th=[ 243], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 3785, max= 3856, per=100.00%, avg=3820.50, stdev=50.20, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1318KiB/s (1350kB/s)(7168KiB/5439msec); 0 zone resets clat (msec): min=179, max=2994, avg=676.67, stdev=1037.90 lat (msec): min=179, max=2994, avg=676.92, stdev=1037.83 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 182], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 232], 60.00th=[ 279], | 70.00th=[ 279], 80.00th=[ 693], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 1486, max= 5907, per=87.92%, avg=3749.67, stdev=2212.42, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 lat (msec) : 4=8.33%, 10=8.33%, 250=58.33%, 500=8.33%, 750=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=6.84%, ctx=137, 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=3047KiB/s (3120kB/s), 305KiB/s-1210KiB/s (312kB/s-1239kB/s), io=20.0MiB (20.0MB), run=5439-6722msec WRITE: bw=4265KiB/s (4368kB/s), 865KiB/s-1523KiB/s (885kB/s-1560kB/s), io=28.0MiB (29.4MB), run=5439-6722msec rand-rw: (groupid=0, jobs=1): err= 0: pid=175377: Fri Oct 2 03:17:14 2026 read: IOPS=0, BW=951KiB/s (974kB/s)(7168KiB/7537msec) clat (msec): min=111, max=2446, avg=827.03, stdev=866.05 lat (msec): min=111, max=2446, avg=827.03, stdev=866.05 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 157], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 498], 60.00th=[ 911], | 70.00th=[ 911], 80.00th=[ 1469], 90.00th=[ 2433], 95.00th=[ 2433], | 99.00th=[ 2433], 99.50th=[ 2433], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 2031, max= 3785, per=87.84%, avg=2386.60, stdev=781.74, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=679KiB/s (696kB/s)(5120KiB/7537msec); 0 zone resets clat (msec): min=211, max=507, avg=343.36, stdev=118.39 lat (msec): min=211, max=508, avg=343.46, stdev=118.39 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 296], 60.00th=[ 296], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 2019, max= 2048, per=53.50%, avg=2035.25, stdev=12.97, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.94%, ctx=56, 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=175378: Fri Oct 2 03:17:14 2026 read: IOPS=0, BW=277KiB/s (284kB/s)(2048KiB/7388msec) clat (msec): min=150, max=292, avg=221.89, stdev=100.44 lat (msec): min=150, max=292, avg=221.89, stdev=100.44 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 150], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 1841, max= 2048, per=71.57%, avg=1944.50, stdev=146.37, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1386KiB/s (1419kB/s)(10.0MiB/7388msec); 0 zone resets clat (msec): min=258, max=3324, avg=680.10, stdev=934.59 lat (msec): min=258, max=3324, avg=680.28, stdev=934.57 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 279], | 30.00th=[ 284], 40.00th=[ 334], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 451], 80.00th=[ 472], 90.00th=[ 575], 95.00th=[ 3339], | 99.00th=[ 3339], 99.50th=[ 3339], 99.90th=[ 3339], 99.95th=[ 3339], | 99.99th=[ 3339] bw ( KiB/s): min= 1896, max= 4079, per=68.27%, avg=2597.00, stdev=1000.22, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (msec) : 250=8.33%, 500=75.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.67%, ctx=101, 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=175379: Fri Oct 2 03:17:14 2026 read: IOPS=0, BW=867KiB/s (888kB/s)(6144KiB/7084msec) clat (msec): min=139, max=801, avg=342.69, stdev=241.77 lat (msec): min=139, max=801, avg=342.69, stdev=241.77 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 288], | 70.00th=[ 401], 80.00th=[ 401], 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= 2019, max= 4079, per=100.00%, avg=3294.33, stdev=1114.21, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=867KiB/s (888kB/s)(6144KiB/7084msec); 0 zone resets clat (msec): min=106, max=3399, avg=814.58, stdev=1281.79 lat (msec): min=106, max=3399, avg=814.67, stdev=1281.80 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 259], 50.00th=[ 259], 60.00th=[ 288], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 3406], 95.00th=[ 3406], | 99.00th=[ 3406], 99.50th=[ 3406], 99.90th=[ 3406], 99.95th=[ 3406], | 99.99th=[ 3406] bw ( KiB/s): min= 2031, max= 4039, per=71.38%, avg=2715.25, stdev=945.02, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=2.06%, 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=175380: Fri Oct 2 03:17:14 2026 read: IOPS=0, BW=690KiB/s (706kB/s)(5120KiB/7422msec) clat (msec): min=129, max=554, avg=280.98, stdev=199.49 lat (msec): min=129, max=554, avg=280.98, stdev=199.49 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 130], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 157], 60.00th=[ 157], | 70.00th=[ 435], 80.00th=[ 435], 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= 2048, max= 3785, per=96.69%, avg=2627.00, stdev=1002.86, samples=3 iops : min= 2, max= 3, avg= 2.33, stdev= 0.58, samples=3 write: IOPS=0, BW=966KiB/s (989kB/s)(7168KiB/7422msec); 0 zone resets clat (msec): min=181, max=3352, avg=849.61, stdev=1118.35 lat (msec): min=181, max=3352, avg=850.08, stdev=1118.30 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 247], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 447], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 709], 90.00th=[ 3339], 95.00th=[ 3339], | 99.00th=[ 3339], 99.50th=[ 3339], 99.90th=[ 3339], 99.95th=[ 3339], | 99.99th=[ 3339] bw ( KiB/s): min= 1512, max= 2043, per=51.03%, avg=1941.17, stdev=210.75, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=2.17%, ctx=90, 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=2717KiB/s (2782kB/s), 277KiB/s-951KiB/s (284kB/s-974kB/s), io=20.0MiB (20.0MB), run=7084-7537msec WRITE: bw=3804KiB/s (3895kB/s), 679KiB/s-1386KiB/s (696kB/s-1419kB/s), io=28.0MiB (29.4MB), run=7084-7537msec 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=175388: Fri Oct 2 03:17:30 2026 read: IOPS=0, BW=3851KiB/s (3943kB/s)(12.0MiB/3191msec) clat (msec): min=920, max=1238, avg=1049.10, stdev=167.58 lat (msec): min=920, max=1238, avg=1049.10, stdev=167.58 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7801, max= 8015, per=100.00%, avg=7908.00, stdev=151.32, 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=8.03%, ctx=286, 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=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=175390: Fri Oct 2 03:17:30 2026 read: IOPS=0, BW=1142KiB/s (1169kB/s)(4096KiB/3588msec) clat (nsec): min=886606k, max=886606k, avg=886606019.00, stdev= 0.00 lat (nsec): min=886609k, max=886609k, avg=886608572.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 885], 5.00th=[ 885], 10.00th=[ 885], 20.00th=[ 885], | 30.00th=[ 885], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2283KiB/s (2338kB/s)(8192KiB/3588msec); 0 zone resets clat (msec): min=1128, max=1530, avg=1329.22, stdev=284.17 lat (msec): min=1130, max=1530, avg=1330.36, stdev=283.14 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=[ 1536], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8159, max= 8159, per=92.18%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.03%, sys=3.04%, ctx=88, 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=175391: Fri Oct 2 03:17:30 2026 write: IOPS=0, BW=3319KiB/s (3399kB/s)(12.0MiB/3702msec); 0 zone resets clat (msec): min=419, max=1630, avg=1217.86, stdev=691.28 lat (msec): min=420, max=1630, avg=1218.24, stdev=691.41 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 1603], 50.00th=[ 1603], 60.00th=[ 1603], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8159, max= 8192, per=92.37%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.70%, ctx=59, 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=175392: Fri Oct 2 03:17:30 2026 write: IOPS=0, BW=3698KiB/s (3787kB/s)(12.0MiB/3323msec); 0 zone resets clat (msec): min=688, max=1638, avg=1079.11, stdev=496.70 lat (msec): min=688, max=1640, avg=1080.24, stdev=497.73 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8015, max= 8192, per=91.55%, avg=8103.50, stdev=125.16, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=3.19%, ctx=42, 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=4566KiB/s (4676kB/s), 1142KiB/s-3851KiB/s (1169kB/s-3943kB/s), io=16.0MiB (16.8MB), run=3191-3588msec WRITE: bw=8851KiB/s (9064kB/s), 2283KiB/s-3698KiB/s (2338kB/s-3787kB/s), io=32.0MiB (33.6MB), run=3323-3702msec rand-rw: (groupid=0, jobs=1): err= 0: pid=175393: Fri Oct 2 03:17:30 2026 read: IOPS=0, BW=3078KiB/s (3152kB/s)(12.0MiB/3992msec) clat (msec): min=462, max=2241, avg=1283.76, stdev=897.34 lat (msec): min=462, max=2241, avg=1283.76, stdev=897.34 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 2232], 80.00th=[ 2232], 90.00th=[ 2232], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 8126, max= 8192, per=100.00%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.78%, ctx=37, 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=175394: Fri Oct 2 03:17:30 2026 read: IOPS=0, BW=1023KiB/s (1048kB/s)(4096KiB/4003msec) clat (nsec): min=1813.1M, max=1813.1M, avg=1813059214.00, stdev= 0.00 lat (nsec): min=1813.1M, max=1813.1M, avg=1813061802.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1821], 5.00th=[ 1821], 10.00th=[ 1821], 20.00th=[ 1821], | 30.00th=[ 1821], 40.00th=[ 1821], 50.00th=[ 1821], 60.00th=[ 1821], | 70.00th=[ 1821], 80.00th=[ 1821], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2046KiB/s (2096kB/s)(8192KiB/4003msec); 0 zone resets clat (msec): min=930, max=1162, avg=1046.62, stdev=164.01 lat (msec): min=931, max=1162, avg=1047.00, stdev=164.00 clat percentiles (msec): | 1.00th=[ 927], 5.00th=[ 927], 10.00th=[ 927], 20.00th=[ 927], | 30.00th=[ 927], 40.00th=[ 927], 50.00th=[ 927], 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= 8094, max= 8094, per=98.89%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.17%, ctx=38, 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=175395: Fri Oct 2 03:17:30 2026 write: IOPS=0, BW=3160KiB/s (3236kB/s)(12.0MiB/3889msec); 0 zone resets clat (msec): min=389, max=1685, avg=1243.63, stdev=739.89 lat (msec): min=389, max=1685, avg=1244.16, stdev=740.00 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 1653], 50.00th=[ 1653], 60.00th=[ 1653], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 8078, max= 8094, per=98.79%, avg=8086.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.31%, ctx=48, 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=175396: Fri Oct 2 03:17:30 2026 write: IOPS=0, BW=3749KiB/s (3839kB/s)(12.0MiB/3278msec); 0 zone resets clat (msec): min=912, max=1186, avg=1058.57, stdev=137.82 lat (msec): min=913, max=1187, avg=1062.18, stdev=138.09 clat percentiles (msec): | 1.00th=[ 911], 5.00th=[ 911], 10.00th=[ 911], 20.00th=[ 911], | 30.00th=[ 911], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8078, max= 8126, per=98.99%, avg=8102.00, stdev=33.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.03%, sys=3.57%, ctx=44, 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 Run status group 0 (all jobs): READ: bw=4093KiB/s (4191kB/s), 1023KiB/s-3078KiB/s (1048kB/s-3152kB/s), io=16.0MiB (16.8MB), run=3992-4003msec WRITE: bw=8186KiB/s (8382kB/s), 2046KiB/s-3749KiB/s (2096kB/s-3839kB/s), io=32.0MiB (33.6MB), run=3278-4003msec