== sanity test 398b: DIO and buffer IO race ============== 17:02:55 (1786568575) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.1849 s, 9.7 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=144453: Wed Aug 12 17:04:44 2026 read: IOPS=16, BW=66.8KiB/s (68.4kB/s)(5992KiB/89748msec) clat (usec): min=37, max=479704, avg=29869.51, stdev=25655.35 lat (usec): min=37, max=479706, avg=29870.62, stdev=25655.37 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 70], 10.00th=[ 9896], 20.00th=[ 14746], | 30.00th=[ 18482], 40.00th=[ 21890], 50.00th=[ 25822], 60.00th=[ 30016], | 70.00th=[ 35390], 80.00th=[ 43254], 90.00th=[ 54789], 95.00th=[ 65799], | 99.00th=[ 93848], 99.50th=[122160], 99.90th=[471860], 99.95th=[480248], | 99.99th=[480248] bw ( KiB/s): min= 7, max= 150, per=25.73%, avg=66.12, stdev=24.63, samples=177 iops : min= 1, max= 37, avg=15.92, stdev= 6.19, samples=177 write: IOPS=17, BW=70.2KiB/s (71.8kB/s)(6296KiB/89748msec); 0 zone resets clat (usec): min=880, max=253111, avg=28344.86, stdev=27969.86 lat (usec): min=881, max=253113, avg=28349.91, stdev=27969.87 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1401], 10.00th=[ 1909], 20.00th=[ 4113], | 30.00th=[ 7570], 40.00th=[ 15008], 50.00th=[ 21103], 60.00th=[ 28967], | 70.00th=[ 36963], 80.00th=[ 47973], 90.00th=[ 64226], 95.00th=[ 78119], | 99.00th=[114820], 99.50th=[143655], 99.90th=[221250], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 7, max= 147, per=26.00%, avg=69.94, stdev=25.60, samples=176 iops : min= 1, max= 36, avg=16.88, stdev= 6.44, samples=176 lat (usec) : 50=0.26%, 100=3.06%, 250=0.55%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.26% lat (msec) : 2=5.40%, 4=4.59%, 10=8.17%, 20=19.27%, 50=42.38% lat (msec) : 100=14.65%, 250=1.24%, 500=0.10% cpu : usr=0.11%, sys=7.94%, ctx=6868, 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=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=144455: Wed Aug 12 17:04:44 2026 read: IOPS=16, BW=64.8KiB/s (66.3kB/s)(5940KiB/91729msec) clat (usec): min=28, max=366113, avg=30095.89, stdev=22675.92 lat (usec): min=28, max=366113, avg=30098.36, stdev=22677.56 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 70], 10.00th=[ 8356], 20.00th=[ 15008], | 30.00th=[ 18744], 40.00th=[ 22152], 50.00th=[ 26346], 60.00th=[ 30802], | 70.00th=[ 36439], 80.00th=[ 43779], 90.00th=[ 54789], 95.00th=[ 66847], | 99.00th=[104334], 99.50th=[120062], 99.90th=[252707], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 7, max= 118, per=25.18%, avg=64.72, stdev=21.09, samples=180 iops : min= 1, max= 29, avg=15.57, stdev= 5.32, samples=180 write: IOPS=17, BW=69.2KiB/s (70.9kB/s)(6348KiB/91729msec); 0 zone resets clat (usec): min=870, max=471158, avg=29379.41, stdev=31211.38 lat (usec): min=870, max=471159, avg=29383.28, stdev=31211.57 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1467], 10.00th=[ 2008], 20.00th=[ 4228], | 30.00th=[ 7832], 40.00th=[ 13829], 50.00th=[ 22414], 60.00th=[ 29492], | 70.00th=[ 38536], 80.00th=[ 48497], 90.00th=[ 66847], 95.00th=[ 85459], | 99.00th=[135267], 99.50th=[156238], 99.90th=[270533], 99.95th=[471860], | 99.99th=[471860] bw ( KiB/s): min= 15, max= 143, per=25.67%, avg=69.06, stdev=25.40, samples=180 iops : min= 3, max= 35, avg=16.65, stdev= 6.37, samples=180 lat (usec) : 50=0.33%, 100=3.22%, 250=0.59%, 500=0.07%, 1000=0.16% lat (msec) : 2=5.14%, 4=4.75%, 10=8.63%, 20=17.71%, 50=43.42% lat (msec) : 100=14.10%, 250=1.76%, 500=0.13% cpu : usr=0.09%, sys=7.74%, ctx=6853, 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=144457: Wed Aug 12 17:04:44 2026 read: IOPS=16, BW=64.8KiB/s (66.4kB/s)(6028KiB/93016msec) clat (usec): min=33, max=495693, avg=29877.30, stdev=26122.40 lat (usec): min=34, max=495695, avg=29878.63, stdev=26122.48 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 68], 10.00th=[ 9503], 20.00th=[ 15401], | 30.00th=[ 19006], 40.00th=[ 22152], 50.00th=[ 26084], 60.00th=[ 30278], | 70.00th=[ 35390], 80.00th=[ 42206], 90.00th=[ 52691], 95.00th=[ 63701], | 99.00th=[ 92799], 99.50th=[126354], 99.90th=[450888], 99.95th=[497026], | 99.99th=[497026] bw ( KiB/s): min= 7, max= 127, per=25.02%, avg=64.30, stdev=25.18, samples=184 iops : min= 1, max= 31, avg=15.46, stdev= 6.30, samples=184 write: IOPS=16, BW=67.3KiB/s (68.9kB/s)(6260KiB/93016msec); 0 zone resets clat (usec): min=975, max=242318, avg=30428.00, stdev=29122.32 lat (usec): min=976, max=242319, avg=30432.02, stdev=29124.42 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1467], 10.00th=[ 2089], 20.00th=[ 4424], | 30.00th=[ 7963], 40.00th=[ 15664], 50.00th=[ 23987], 60.00th=[ 31589], | 70.00th=[ 40109], 80.00th=[ 52691], 90.00th=[ 69731], 95.00th=[ 84411], | 99.00th=[117965], 99.50th=[143655], 99.90th=[225444], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 7, max= 127, per=24.84%, avg=66.81, stdev=23.29, samples=184 iops : min= 1, max= 31, avg=16.09, stdev= 5.86, samples=184 lat (usec) : 50=0.26%, 100=3.22%, 250=0.36%, 500=0.23%, 1000=0.07% lat (msec) : 2=4.69%, 4=4.92%, 10=8.53%, 20=17.02%, 50=43.55% lat (msec) : 100=15.49%, 250=1.56%, 500=0.10% cpu : usr=0.10%, sys=7.73%, ctx=6958, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144458: Wed Aug 12 17:04:44 2026 read: IOPS=16, BW=64.8KiB/s (66.3kB/s)(6052KiB/93402msec) clat (usec): min=38, max=745447, avg=31050.14, stdev=28394.93 lat (usec): min=38, max=745448, avg=31052.21, stdev=28394.50 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 64], 10.00th=[ 9896], 20.00th=[ 15270], | 30.00th=[ 18744], 40.00th=[ 22414], 50.00th=[ 26084], 60.00th=[ 31065], | 70.00th=[ 37487], 80.00th=[ 44827], 90.00th=[ 56886], 95.00th=[ 66323], | 99.00th=[106431], 99.50th=[126354], 99.90th=[221250], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 7, max= 119, per=25.01%, avg=64.28, stdev=23.65, samples=183 iops : min= 1, max= 29, avg=15.46, stdev= 5.93, samples=183 write: IOPS=16, BW=66.8KiB/s (68.4kB/s)(6236KiB/93402msec); 0 zone resets clat (usec): min=920, max=323009, avg=29521.51, stdev=31294.40 lat (usec): min=921, max=323012, avg=29526.75, stdev=31295.28 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1450], 10.00th=[ 2057], 20.00th=[ 4359], | 30.00th=[ 7767], 40.00th=[ 15139], 50.00th=[ 22414], 60.00th=[ 28705], | 70.00th=[ 37487], 80.00th=[ 48497], 90.00th=[ 66323], 95.00th=[ 83362], | 99.00th=[126354], 99.50th=[160433], 99.90th=[299893], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 15, max= 135, per=24.68%, avg=66.38, stdev=23.99, samples=183 iops : min= 3, max= 33, avg=15.99, stdev= 6.02, samples=183 lat (usec) : 50=0.33%, 100=3.39%, 250=0.52%, 500=0.10%, 750=0.13% lat (usec) : 1000=0.10% lat (msec) : 2=4.72%, 4=5.01%, 10=7.39%, 20=18.36%, 50=43.13% lat (msec) : 100=14.91%, 250=1.73%, 500=0.16%, 750=0.03% cpu : usr=0.10%, sys=7.58%, ctx=6961, 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=257KiB/s (263kB/s), 64.8KiB/s-66.8KiB/s (66.3kB/s-68.4kB/s), io=23.4MiB (24.6MB), run=89748-93402msec WRITE: bw=269KiB/s (276kB/s), 66.8KiB/s-70.2KiB/s (68.4kB/s-71.8kB/s), io=24.6MiB (25.7MB), run=89748-93402msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144452: Wed Aug 12 17:06:24 2026 read: IOPS=7, BW=31.4KiB/s (32.1kB/s)(5992KiB/190855msec) clat (msec): min=4, max=506, avg=25.16, stdev=26.46 lat (msec): min=4, max=506, avg=25.17, stdev=26.45 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 25], 80.00th=[ 34], 90.00th=[ 54], 95.00th=[ 72], | 99.00th=[ 116], 99.50th=[ 136], 99.90th=[ 222], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7, max= 103, per=26.39%, avg=32.72, stdev=20.84, samples=356 iops : min= 1, max= 25, avg= 7.56, stdev= 5.25, samples=356 write: IOPS=8, BW=32.0KiB/s (33.8kB/s)(6296KiB/190855msec); 0 zone resets clat (msec): min=26, max=433, avg=97.08, stdev=45.66 lat (msec): min=26, max=433, avg=97.08, stdev=45.66 clat percentiles (msec): | 1.00th=[ 37], 5.00th=[ 47], 10.00th=[ 53], 20.00th=[ 62], | 30.00th=[ 69], 40.00th=[ 78], 50.00th=[ 86], 60.00th=[ 97], | 70.00th=[ 110], 80.00th=[ 128], 90.00th=[ 157], 95.00th=[ 184], | 99.00th=[ 247], 99.50th=[ 284], 99.90th=[ 409], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 7, max= 70, per=25.15%, avg=32.70, stdev=13.61, samples=374 iops : min= 1, max= 17, avg= 7.56, stdev= 3.45, samples=374 lat (msec) : 10=9.08%, 20=20.83%, 50=16.99%, 100=33.30%, 250=19.27% lat (msec) : 500=0.49%, 750=0.03% cpu : usr=0.06%, sys=1.89%, ctx=5321, 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=144454: Wed Aug 12 17:06:24 2026 read: IOPS=7, BW=30.8KiB/s (31.6kB/s)(5940KiB/192572msec) clat (msec): min=4, max=714, avg=25.85, stdev=30.99 lat (msec): min=4, max=714, avg=25.85, stdev=30.99 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 24], 80.00th=[ 33], 90.00th=[ 57], 95.00th=[ 79], | 99.00th=[ 129], 99.50th=[ 150], 99.90th=[ 321], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 103, per=26.18%, avg=32.47, stdev=21.14, samples=356 iops : min= 1, max= 25, avg= 7.52, stdev= 5.32, samples=356 write: IOPS=8, BW=32.0KiB/s (33.8kB/s)(6348KiB/192572msec); 0 zone resets clat (msec): min=24, max=425, avg=96.91, stdev=44.51 lat (msec): min=24, max=425, avg=96.91, stdev=44.51 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 46], 10.00th=[ 52], 20.00th=[ 62], | 30.00th=[ 71], 40.00th=[ 79], 50.00th=[ 86], 60.00th=[ 96], | 70.00th=[ 109], 80.00th=[ 128], 90.00th=[ 159], 95.00th=[ 182], | 99.00th=[ 251], 99.50th=[ 268], 99.90th=[ 414], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7, max= 79, per=24.96%, avg=32.44, stdev=13.81, samples=380 iops : min= 1, max= 19, avg= 7.51, stdev= 3.51, samples=380 lat (msec) : 10=8.17%, 20=21.13%, 50=17.74%, 100=33.17%, 250=19.21% lat (msec) : 500=0.55%, 750=0.03% cpu : usr=0.05%, sys=1.87%, ctx=5392, 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=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=144456: Wed Aug 12 17:06:24 2026 read: IOPS=7, BW=31.8KiB/s (32.6kB/s)(6028KiB/189431msec) clat (msec): min=4, max=238, avg=25.35, stdev=23.50 lat (msec): min=4, max=238, avg=25.36, stdev=23.50 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 36], 90.00th=[ 54], 95.00th=[ 73], | 99.00th=[ 116], 99.50th=[ 140], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 7, max= 104, per=26.35%, avg=32.68, stdev=21.29, samples=358 iops : min= 1, max= 26, avg= 7.55, stdev= 5.36, samples=358 write: IOPS=8, BW=33.0KiB/s (33.8kB/s)(6260KiB/189431msec); 0 zone resets clat (msec): min=29, max=755, avg=96.39, stdev=47.68 lat (msec): min=29, max=755, avg=96.39, stdev=47.68 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 48], 10.00th=[ 53], 20.00th=[ 62], | 30.00th=[ 69], 40.00th=[ 77], 50.00th=[ 86], 60.00th=[ 96], | 70.00th=[ 108], 80.00th=[ 125], 90.00th=[ 153], 95.00th=[ 184], | 99.00th=[ 236], 99.50th=[ 296], 99.90th=[ 489], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 64, per=25.12%, avg=32.66, stdev=13.87, samples=372 iops : min= 1, max= 16, avg= 7.55, stdev= 3.52, samples=372 lat (msec) : 10=8.69%, 20=20.25%, 50=18.65%, 100=32.85%, 250=19.17% lat (msec) : 500=0.36%, 1000=0.03% cpu : usr=0.05%, sys=1.94%, ctx=5333, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144459: Wed Aug 12 17:06:24 2026 read: IOPS=7, BW=31.8KiB/s (32.6kB/s)(6052KiB/190196msec) clat (msec): min=4, max=372, avg=24.85, stdev=24.79 lat (msec): min=4, max=372, avg=24.85, stdev=24.79 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 33], 90.00th=[ 56], 95.00th=[ 77], | 99.00th=[ 113], 99.50th=[ 124], 99.90th=[ 241], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 7, max= 127, per=27.05%, avg=33.55, stdev=21.87, samples=351 iops : min= 1, max= 31, avg= 7.79, stdev= 5.50, samples=351 write: IOPS=8, BW=32.8KiB/s (33.6kB/s)(6236KiB/190196msec); 0 zone resets clat (msec): min=30, max=819, avg=97.64, stdev=47.38 lat (msec): min=30, max=819, avg=97.65, stdev=47.38 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 48], 10.00th=[ 55], 20.00th=[ 63], | 30.00th=[ 70], 40.00th=[ 78], 50.00th=[ 87], 60.00th=[ 97], | 70.00th=[ 110], 80.00th=[ 128], 90.00th=[ 159], 95.00th=[ 180], | 99.00th=[ 228], 99.50th=[ 275], 99.90th=[ 485], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 71, per=24.81%, avg=32.26, stdev=13.16, samples=375 iops : min= 1, max= 17, avg= 7.47, stdev= 3.35, samples=375 lat (msec) : 10=8.72%, 20=22.30%, 50=15.79%, 100=33.33%, 250=19.43% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.06%, sys=1.84%, ctx=5293, 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=125KiB/s (128kB/s), 30.8KiB/s-31.8KiB/s (31.6kB/s-32.6kB/s), io=23.4MiB (24.6MB), run=189431-192572msec WRITE: bw=131KiB/s (134kB/s), 32.8KiB/s-33.0KiB/s (33.6kB/s-33.8kB/s), io=24.6MiB (25.7MB), run=189431-192572msec 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=144504: Wed Aug 12 17:06:58 2026 read: IOPS=16, BW=261KiB/s (267kB/s)(5920KiB/22697msec) clat (usec): min=36, max=221896, avg=31737.69, stdev=26816.53 lat (usec): min=36, max=221897, avg=31738.78, stdev=26816.58 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 62], 20.00th=[ 133], | 30.00th=[ 18482], 40.00th=[ 23987], 50.00th=[ 28181], 60.00th=[ 33162], | 70.00th=[ 40633], 80.00th=[ 50594], 90.00th=[ 60031], 95.00th=[ 72877], | 99.00th=[124257], 99.50th=[175113], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 62, max= 541, per=26.82%, avg=255.02, stdev=104.83, samples=44 iops : min= 3, max= 33, avg=15.23, stdev= 6.67, samples=44 write: IOPS=17, BW=281KiB/s (287kB/s)(6368KiB/22697msec); 0 zone resets clat (usec): min=1505, max=160332, avg=26867.43, stdev=29022.56 lat (usec): min=1506, max=160334, avg=26869.43, stdev=29022.63 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1827], 10.00th=[ 2114], 20.00th=[ 4113], | 30.00th=[ 7242], 40.00th=[ 11207], 50.00th=[ 15795], 60.00th=[ 21890], | 70.00th=[ 31589], 80.00th=[ 45351], 90.00th=[ 69731], 95.00th=[ 85459], | 99.00th=[145753], 99.50th=[156238], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 31, max= 600, per=27.77%, avg=278.02, stdev=106.75, samples=44 iops : min= 1, max= 37, avg=16.70, stdev= 6.77, samples=44 lat (usec) : 50=1.04%, 100=8.20%, 250=0.39% lat (msec) : 2=4.82%, 4=5.34%, 10=9.64%, 20=14.71%, 50=37.11% lat (msec) : 100=16.54%, 250=2.21% cpu : usr=0.08%, sys=7.23%, ctx=1459, 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=144506: Wed Aug 12 17:06:58 2026 read: IOPS=14, BW=231KiB/s (237kB/s)(5744KiB/24838msec) clat (usec): min=38, max=329520, avg=33274.16, stdev=27852.97 lat (usec): min=39, max=329521, avg=33276.37, stdev=27852.34 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 59], 10.00th=[ 64], 20.00th=[ 15926], | 30.00th=[ 21365], 40.00th=[ 26346], 50.00th=[ 30802], 60.00th=[ 35914], | 70.00th=[ 41157], 80.00th=[ 48497], 90.00th=[ 60556], 95.00th=[ 73925], | 99.00th=[119014], 99.50th=[152044], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 31, max= 446, per=25.32%, avg=240.79, stdev=99.71, samples=47 iops : min= 1, max= 27, avg=14.30, stdev= 6.30, samples=47 write: IOPS=16, BW=263KiB/s (270kB/s)(6544KiB/24838msec); 0 zone resets clat (usec): min=1220, max=252931, avg=30693.30, stdev=35838.21 lat (usec): min=1222, max=252933, avg=30695.41, stdev=35838.27 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1876], 10.00th=[ 2212], 20.00th=[ 4228], | 30.00th=[ 7046], 40.00th=[ 11994], 50.00th=[ 17957], 60.00th=[ 26346], | 70.00th=[ 39584], 80.00th=[ 51119], 90.00th=[ 72877], 95.00th=[ 91751], | 99.00th=[173016], 99.50th=[206570], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 508, per=26.22%, avg=262.47, stdev=116.85, samples=49 iops : min= 1, max= 31, avg=15.69, stdev= 7.36, samples=49 lat (usec) : 50=0.52%, 100=6.38%, 250=0.39%, 500=0.26%, 750=0.13% lat (msec) : 2=4.56%, 4=5.86%, 10=9.51%, 20=12.63%, 50=39.71% lat (msec) : 100=17.19%, 250=2.60%, 500=0.26% cpu : usr=0.09%, sys=6.58%, ctx=1511, 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=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=144508: Wed Aug 12 17:06:58 2026 read: IOPS=17, BW=284KiB/s (290kB/s)(6256KiB/22062msec) clat (usec): min=35, max=198573, avg=31810.04, stdev=25343.79 lat (usec): min=35, max=198574, avg=31812.09, stdev=25343.37 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 12780], | 30.00th=[ 20841], 40.00th=[ 24249], 50.00th=[ 30016], 60.00th=[ 33817], | 70.00th=[ 39584], 80.00th=[ 46924], 90.00th=[ 59507], 95.00th=[ 71828], | 99.00th=[119014], 99.50th=[133694], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 93, max= 642, per=29.56%, avg=281.16, stdev=110.22, samples=43 iops : min= 5, max= 40, avg=16.91, stdev= 7.01, samples=43 write: IOPS=17, BW=273KiB/s (280kB/s)(6032KiB/22062msec); 0 zone resets clat (usec): min=1151, max=198061, avg=25344.24, stdev=27163.88 lat (usec): min=1152, max=198064, avg=25346.40, stdev=27164.10 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1860], 10.00th=[ 2073], 20.00th=[ 4293], | 30.00th=[ 6521], 40.00th=[ 10683], 50.00th=[ 16057], 60.00th=[ 23200], | 70.00th=[ 30016], 80.00th=[ 43779], 90.00th=[ 61080], 95.00th=[ 78119], | 99.00th=[135267], 99.50th=[154141], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 95, max= 544, per=26.78%, avg=268.09, stdev=97.02, samples=43 iops : min= 5, max= 34, avg=16.09, stdev= 6.22, samples=43 lat (usec) : 50=1.17%, 100=6.90%, 250=0.52%, 500=0.26% lat (msec) : 2=4.30%, 4=4.82%, 10=10.81%, 20=12.37%, 50=42.32% lat (msec) : 100=14.58%, 250=1.95% cpu : usr=0.06%, sys=7.27%, ctx=1416, 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=144510: Wed Aug 12 17:06:58 2026 read: IOPS=14, BW=240KiB/s (245kB/s)(6032KiB/25162msec) clat (usec): min=39, max=163203, avg=33323.77, stdev=25171.41 lat (usec): min=40, max=163204, avg=33325.08, stdev=25171.37 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 12780], | 30.00th=[ 21365], 40.00th=[ 26084], 50.00th=[ 31589], 60.00th=[ 36963], | 70.00th=[ 42730], 80.00th=[ 50070], 90.00th=[ 61080], 95.00th=[ 79168], | 99.00th=[112722], 99.50th=[141558], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 94, max= 448, per=25.62%, avg=243.64, stdev=87.40, samples=47 iops : min= 5, max= 28, avg=14.51, stdev= 5.55, samples=47 write: IOPS=15, BW=249KiB/s (255kB/s)(6256KiB/25162msec); 0 zone resets clat (usec): min=1483, max=219291, avg=31285.97, stdev=39602.67 lat (usec): min=1485, max=219295, avg=31291.54, stdev=39600.80 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1811], 10.00th=[ 2024], 20.00th=[ 3884], | 30.00th=[ 5932], 40.00th=[ 10159], 50.00th=[ 17957], 60.00th=[ 25297], | 70.00th=[ 33817], 80.00th=[ 52167], 90.00th=[ 73925], 95.00th=[117965], | 99.00th=[198181], 99.50th=[219153], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 30, max= 508, per=24.54%, avg=245.69, stdev=117.92, samples=49 iops : min= 1, max= 31, avg=14.63, stdev= 7.46, samples=49 lat (usec) : 50=0.65%, 100=7.29%, 500=0.13% lat (msec) : 2=4.95%, 4=6.25%, 10=9.90%, 20=11.46%, 50=38.67% lat (msec) : 100=16.41%, 250=4.30% cpu : usr=0.09%, sys=6.88%, ctx=1543, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=952KiB/s (975kB/s), 231KiB/s-284KiB/s (237kB/s-290kB/s), io=23.4MiB (24.5MB), run=22062-25162msec WRITE: bw=1002KiB/s (1026kB/s), 249KiB/s-281KiB/s (255kB/s-287kB/s), io=24.6MiB (25.8MB), run=22062-25162msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144505: Wed Aug 12 17:07:25 2026 read: IOPS=7, BW=114KiB/s (117kB/s)(5920KiB/51818msec) clat (msec): min=5, max=165, avg=29.55, stdev=28.96 lat (msec): min=5, max=165, avg=29.55, stdev=28.96 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 43], 90.00th=[ 65], 95.00th=[ 93], | 99.00th=[ 163], 99.50th=[ 163], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 31, max= 319, per=25.99%, avg=119.29, stdev=71.29, samples=96 iops : min= 1, max= 19, avg= 6.74, stdev= 4.48, samples=96 write: IOPS=7, BW=123KiB/s (126kB/s)(6368KiB/51818msec); 0 zone resets clat (msec): min=33, max=349, avg=102.48, stdev=53.80 lat (msec): min=33, max=349, avg=102.48, stdev=53.80 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 48], 10.00th=[ 53], 20.00th=[ 61], | 30.00th=[ 71], 40.00th=[ 80], 50.00th=[ 86], 60.00th=[ 99], | 70.00th=[ 116], 80.00th=[ 136], 90.00th=[ 174], 95.00th=[ 213], | 99.00th=[ 305], 99.50th=[ 330], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 254, per=25.17%, avg=121.58, stdev=60.03, samples=102 iops : min= 1, max= 15, avg= 6.87, stdev= 3.84, samples=102 lat (msec) : 10=5.73%, 20=20.83%, 50=17.19%, 100=34.38%, 250=20.57% lat (msec) : 500=1.30% cpu : usr=0.06%, sys=1.75%, ctx=1369, 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=144507: Wed Aug 12 17:07:25 2026 read: IOPS=6, BW=110KiB/s (113kB/s)(5744KiB/52125msec) clat (msec): min=5, max=254, avg=29.83, stdev=34.20 lat (msec): min=5, max=254, avg=29.83, stdev=34.20 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 36], 90.00th=[ 65], 95.00th=[ 109], | 99.00th=[ 188], 99.50th=[ 232], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 31, max= 384, per=25.76%, avg=118.23, stdev=78.06, samples=95 iops : min= 1, max= 24, avg= 6.67, stdev= 4.93, samples=95 write: IOPS=7, BW=126KiB/s (129kB/s)(6544KiB/52125msec); 0 zone resets clat (msec): min=24, max=320, avg=100.67, stdev=50.86 lat (msec): min=24, max=320, avg=100.67, stdev=50.86 clat percentiles (msec): | 1.00th=[ 34], 5.00th=[ 47], 10.00th=[ 52], 20.00th=[ 62], | 30.00th=[ 71], 40.00th=[ 79], 50.00th=[ 86], 60.00th=[ 95], | 70.00th=[ 112], 80.00th=[ 138], 90.00th=[ 178], 95.00th=[ 209], | 99.00th=[ 264], 99.50th=[ 275], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 31, max= 254, per=26.22%, avg=126.62, stdev=59.25, samples=101 iops : min= 1, max= 15, avg= 7.20, stdev= 3.82, samples=101 lat (msec) : 10=5.47%, 20=20.96%, 50=18.62%, 100=32.81%, 250=21.22% lat (msec) : 500=0.91% cpu : usr=0.06%, sys=1.67%, ctx=1344, 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=144509: Wed Aug 12 17:07:25 2026 read: IOPS=7, BW=125KiB/s (128kB/s)(6256KiB/49862msec) clat (msec): min=5, max=208, avg=27.52, stdev=29.47 lat (msec): min=5, max=208, avg=27.52, stdev=29.47 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 20], | 70.00th=[ 26], 80.00th=[ 36], 90.00th=[ 59], 95.00th=[ 77], | 99.00th=[ 167], 99.50th=[ 194], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 31, max= 416, per=29.04%, avg=133.29, stdev=92.33, samples=93 iops : min= 1, max= 26, avg= 7.61, stdev= 5.89, samples=93 write: IOPS=7, BW=121KiB/s (124kB/s)(6032KiB/49862msec); 0 zone resets clat (msec): min=38, max=419, avg=102.95, stdev=54.87 lat (msec): min=38, max=419, avg=102.96, stdev=54.87 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 48], 10.00th=[ 54], 20.00th=[ 62], | 30.00th=[ 68], 40.00th=[ 75], 50.00th=[ 86], 60.00th=[ 97], | 70.00th=[ 113], 80.00th=[ 142], 90.00th=[ 178], 95.00th=[ 220], | 99.00th=[ 296], 99.50th=[ 309], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 31, max= 254, per=24.94%, avg=120.47, stdev=57.00, samples=99 iops : min= 1, max= 15, avg= 6.80, stdev= 3.65, samples=99 lat (msec) : 10=7.42%, 20=23.31%, 50=16.54%, 100=31.90%, 250=19.66% lat (msec) : 500=1.17% cpu : usr=0.04%, sys=1.82%, ctx=1384, 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=144511: Wed Aug 12 17:07:25 2026 read: IOPS=7, BW=119KiB/s (121kB/s)(6032KiB/50889msec) clat (msec): min=5, max=183, avg=29.12, stdev=30.39 lat (msec): min=5, max=183, avg=29.12, stdev=30.39 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 37], 90.00th=[ 68], 95.00th=[ 93], | 99.00th=[ 174], 99.50th=[ 178], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 31, max= 383, per=28.18%, avg=129.35, stdev=80.28, samples=91 iops : min= 1, max= 23, avg= 7.38, stdev= 5.14, samples=91 write: IOPS=7, BW=123KiB/s (126kB/s)(6256KiB/50889msec); 0 zone resets clat (msec): min=30, max=430, avg=101.38, stdev=50.29 lat (msec): min=30, max=430, avg=101.39, stdev=50.32 clat percentiles (msec): | 1.00th=[ 37], 5.00th=[ 48], 10.00th=[ 56], 20.00th=[ 67], | 30.00th=[ 73], 40.00th=[ 81], 50.00th=[ 88], 60.00th=[ 97], | 70.00th=[ 111], 80.00th=[ 132], 90.00th=[ 167], 95.00th=[ 199], | 99.00th=[ 296], 99.50th=[ 317], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 31, max= 224, per=25.65%, avg=123.91, stdev=55.13, samples=99 iops : min= 1, max= 14, avg= 7.04, stdev= 3.57, samples=99 lat (msec) : 10=6.12%, 20=21.22%, 50=17.71%, 100=33.59%, 250=20.44% lat (msec) : 500=0.91% cpu : usr=0.03%, sys=1.85%, ctx=1344, 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=460KiB/s (471kB/s), 110KiB/s-125KiB/s (113kB/s-128kB/s), io=23.4MiB (24.5MB), run=49862-52125msec WRITE: bw=483KiB/s (495kB/s), 121KiB/s-126KiB/s (124kB/s-129kB/s), io=24.6MiB (25.8MB), run=49862-52125msec 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=144525: Wed Aug 12 17:07:40 2026 read: IOPS=1, BW=1305KiB/s (1336kB/s)(7168KiB/5492msec) clat (msec): min=128, max=2753, avg=556.89, stdev=969.73 lat (msec): min=128, max=2753, avg=556.90, stdev=969.73 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 157], | 30.00th=[ 163], 40.00th=[ 163], 50.00th=[ 199], 60.00th=[ 241], | 70.00th=[ 241], 80.00th=[ 259], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 1486, max= 4071, per=80.92%, avg=2794.25, stdev=1247.30, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=932KiB/s (955kB/s)(5120KiB/5492msec); 0 zone resets clat (msec): min=137, max=676, avg=310.79, stdev=214.05 lat (msec): min=137, max=677, avg=310.88, stdev=214.06 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 249], 60.00th=[ 249], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1812, max= 2039, per=40.75%, avg=1970.50, stdev=107.43, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=66.67%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.04%, sys=8.81%, ctx=630, 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=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=144526: Wed Aug 12 17:07:40 2026 read: IOPS=0, BW=345KiB/s (354kB/s)(2048KiB/5930msec) clat (msec): min=137, max=167, avg=152.24, stdev=21.43 lat (msec): min=137, max=167, avg=152.24, stdev=21.43 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 167], | 70.00th=[ 167], 80.00th=[ 167], 90.00th=[ 167], 95.00th=[ 167], | 99.00th=[ 167], 99.50th=[ 167], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 1523, max= 1996, per=50.96%, avg=1759.50, stdev=334.46, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1727KiB/s (1768kB/s)(10.0MiB/5930msec); 0 zone resets clat (msec): min=79, max=3054, avg=554.23, stdev=946.91 lat (msec): min=79, max=3054, avg=554.32, stdev=946.90 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 106], | 30.00th=[ 112], 40.00th=[ 136], 50.00th=[ 186], 60.00th=[ 192], | 70.00th=[ 197], 80.00th=[ 211], 90.00th=[ 1267], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min= 1996, max= 8159, per=91.14%, avg=4406.75, stdev=2976.45, samples=4 iops : min= 1, max= 7, avg= 3.50, stdev= 3.00, samples=4 lat (msec) : 100=8.33%, 250=75.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=8.23%, ctx=115, 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=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=144527: Wed Aug 12 17:07:40 2026 read: IOPS=1, BW=1306KiB/s (1337kB/s)(6144KiB/4706msec) clat (usec): min=575, max=272269, avg=110097.56, stdev=117996.47 lat (usec): min=576, max=272270, avg=110098.86, stdev=117996.30 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 578], 10.00th=[ 578], 20.00th=[ 11994], | 30.00th=[ 11994], 40.00th=[ 15270], 50.00th=[ 15270], 60.00th=[141558], | 70.00th=[219153], 80.00th=[219153], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 3624, max= 4071, per=100.00%, avg=3847.50, stdev=316.08, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1306KiB/s (1337kB/s)(6144KiB/4706msec); 0 zone resets clat (msec): min=168, max=2583, avg=657.49, stdev=948.56 lat (msec): min=169, max=2584, avg=657.57, stdev=948.56 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 292], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 1492, max= 4071, per=48.68%, avg=2353.50, stdev=1166.78, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 20=16.67%, 250=33.33%, 500=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.18%, ctx=112, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144528: Wed Aug 12 17:07:40 2026 read: IOPS=0, BW=1022KiB/s (1046kB/s)(5120KiB/5011msec) clat (usec): min=1937, max=343965, avg=163840.06, stdev=147453.26 lat (usec): min=1939, max=343966, avg=163841.38, stdev=147453.10 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 1942], 10.00th=[ 1942], 20.00th=[ 1942], | 30.00th=[ 34341], 40.00th=[ 34341], 50.00th=[166724], 60.00th=[166724], | 70.00th=[270533], 80.00th=[270533], 90.00th=[346031], 95.00th=[346031], | 99.00th=[346031], 99.50th=[346031], 99.90th=[346031], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1430KiB/s (1465kB/s)(7168KiB/5011msec); 0 zone resets clat (msec): min=103, max=2744, avg=594.95, stdev=955.22 lat (msec): min=103, max=2744, avg=595.03, stdev=955.22 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 142], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 197], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 439], 90.00th=[ 2735], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 1675, max= 5437, per=77.15%, avg=3730.33, stdev=1905.08, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 lat (msec) : 2=8.33%, 50=8.33%, 250=41.67%, 500=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.72%, ctx=165, 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=3454KiB/s (3537kB/s), 345KiB/s-1306KiB/s (354kB/s-1337kB/s), io=20.0MiB (20.0MB), run=4706-5930msec WRITE: bw=4835KiB/s (4951kB/s), 932KiB/s-1727KiB/s (955kB/s-1768kB/s), io=28.0MiB (29.4MB), run=4706-5930msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144530: Wed Aug 12 17:07:41 2026 read: IOPS=1, BW=1082KiB/s (1108kB/s)(7168KiB/6626msec) clat (msec): min=42, max=2686, avg=802.36, stdev=1037.14 lat (msec): min=42, max=2686, avg=802.36, stdev=1037.14 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 43], 10.00th=[ 43], 20.00th=[ 88], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 317], 60.00th=[ 321], | 70.00th=[ 321], 80.00th=[ 1854], 90.00th=[ 2702], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 2011, max= 4047, per=81.75%, avg=2526.00, stdev=1014.02, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=773KiB/s (791kB/s)(5120KiB/6626msec); 0 zone resets clat (msec): min=72, max=471, avg=190.56, stdev=161.42 lat (msec): min=72, max=471, avg=190.65, stdev=161.42 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 73], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 144], 60.00th=[ 144], | 70.00th=[ 167], 80.00th=[ 167], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 2023, max= 2043, per=46.98%, avg=2033.00, stdev=14.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 50=8.33%, 100=25.00%, 250=16.67%, 500=33.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.05%, sys=1.51%, ctx=58, 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=144531: Wed Aug 12 17:07:41 2026 read: IOPS=0, BW=321KiB/s (328kB/s)(2048KiB/6386msec) clat (msec): min=84, max=346, avg=215.64, stdev=184.77 lat (msec): min=84, max=346, avg=215.64, stdev=184.77 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 86], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 86], 60.00th=[ 347], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 1605, max= 2043, per=59.03%, avg=1824.00, stdev=309.71, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1604KiB/s (1642kB/s)(10.0MiB/6386msec); 0 zone resets clat (msec): min=139, max=2952, avg=588.24, stdev=849.27 lat (msec): min=139, max=2952, avg=588.37, stdev=849.28 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 163], | 30.00th=[ 194], 40.00th=[ 257], 50.00th=[ 275], 60.00th=[ 305], | 70.00th=[ 326], 80.00th=[ 609], 90.00th=[ 667], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 2031, max= 4087, per=75.15%, avg=3251.80, stdev=1110.89, samples=5 iops : min= 1, max= 3, avg= 2.20, stdev= 1.10, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.02%, sys=2.83%, ctx=75, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144532: Wed Aug 12 17:07:41 2026 read: IOPS=0, BW=1011KiB/s (1035kB/s)(6144KiB/6079msec) clat (msec): min=50, max=454, avg=141.38, stdev=154.52 lat (msec): min=50, max=454, avg=141.39, stdev=154.52 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 69], | 30.00th=[ 69], 40.00th=[ 79], 50.00th=[ 79], 60.00th=[ 88], | 70.00th=[ 110], 80.00th=[ 110], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 2019, max= 4087, per=87.73%, avg=2711.00, stdev=1191.66, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=1011KiB/s (1035kB/s)(6144KiB/6079msec); 0 zone resets clat (msec): min=157, max=3604, avg=863.99, stdev=1349.58 lat (msec): min=157, max=3604, avg=864.08, stdev=1349.58 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 443], | 70.00th=[ 514], 80.00th=[ 514], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 1689, max= 2048, per=45.11%, avg=1951.75, stdev=175.40, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=33.33%, 250=33.33%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=2.55%, ctx=89, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144533: Wed Aug 12 17:07:41 2026 read: IOPS=0, BW=804KiB/s (824kB/s)(5120KiB/6365msec) clat (msec): min=71, max=299, avg=209.68, stdev=95.84 lat (msec): min=71, max=299, avg=209.68, stdev=95.84 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 220], 60.00th=[ 220], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 2019, max= 4087, per=87.69%, avg=2709.67, stdev=1192.81, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1126KiB/s (1153kB/s)(7168KiB/6365msec); 0 zone resets clat (msec): min=106, max=3279, avg=759.10, stdev=1132.38 lat (msec): min=106, max=3279, avg=759.20, stdev=1132.37 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 138], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 284], 60.00th=[ 489], | 70.00th=[ 489], 80.00th=[ 743], 90.00th=[ 3272], 95.00th=[ 3272], | 99.00th=[ 3272], 99.50th=[ 3272], 99.90th=[ 3272], 99.95th=[ 3272], | 99.99th=[ 3272] bw ( KiB/s): min= 1787, max= 4063, per=57.15%, avg=2473.00, stdev=1065.73, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=2.31%, ctx=93, 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=3091KiB/s (3165kB/s), 321KiB/s-1082KiB/s (328kB/s-1108kB/s), io=20.0MiB (20.0MB), run=6079-6626msec WRITE: bw=4327KiB/s (4431kB/s), 773KiB/s-1604KiB/s (791kB/s-1642kB/s), io=28.0MiB (29.4MB), run=6079-6626msec 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=144539: Wed Aug 12 17:07:52 2026 read: IOPS=1, BW=5588KiB/s (5722kB/s)(12.0MiB/2199msec) clat (msec): min=713, max=752, avg=732.01, stdev=19.40 lat (msec): min=713, max=752, avg=732.01, stdev=19.40 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] 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) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=18.38%, ctx=380, 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=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=144540: Wed Aug 12 17:07:52 2026 read: IOPS=0, BW=1473KiB/s (1509kB/s)(4096KiB/2780msec) clat (nsec): min=837781k, max=837781k, avg=837781454.00, stdev= 0.00 lat (nsec): min=837784k, max=837784k, avg=837783976.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] 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=2947KiB/s (3017kB/s)(8192KiB/2780msec); 0 zone resets clat (msec): min=579, max=1324, avg=952.01, stdev=526.49 lat (msec): min=580, max=1325, avg=952.99, stdev=527.19 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 1318], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8143, max= 8143, per=69.08%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.07%, sys=6.15%, ctx=270, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144541: Wed Aug 12 17:07:52 2026 write: IOPS=1, BW=4583KiB/s (4693kB/s)(12.0MiB/2681msec); 0 zone resets clat (msec): min=724, max=1011, avg=892.52, stdev=149.98 lat (msec): min=724, max=1011, avg=892.84, stdev=150.04 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 1011], 80.00th=[ 1011], 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= 8143, max= 8192, per=69.29%, avg=8167.50, stdev=34.65, 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=0.00%, sys=8.54%, ctx=72, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144542: Wed Aug 12 17:07:52 2026 write: IOPS=1, BW=5614KiB/s (5748kB/s)(12.0MiB/2189msec); 0 zone resets clat (msec): min=296, max=1205, avg=722.98, stdev=457.04 lat (msec): min=296, max=1205, avg=723.46, stdev=457.07 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.05%, sys=6.35%, ctx=30, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5894KiB/s (6035kB/s), 1473KiB/s-5588KiB/s (1509kB/s-5722kB/s), io=16.0MiB (16.8MB), run=2199-2780msec WRITE: bw=11.5MiB/s (12.1MB/s), 2947KiB/s-5614KiB/s (3017kB/s-5748kB/s), io=32.0MiB (33.6MB), run=2189-2780msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144544: Wed Aug 12 17:07:53 2026 read: IOPS=1, BW=4443KiB/s (4549kB/s)(12.0MiB/2766msec) clat (msec): min=271, max=1265, avg=921.50, stdev=563.24 lat (msec): min=271, max=1265, avg=921.51, stdev=563.24 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, 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=3.87%, 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=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=144545: Wed Aug 12 17:07:53 2026 read: IOPS=0, BW=1464KiB/s (1499kB/s)(4096KiB/2798msec) clat (nsec): min=1175.1M, max=1175.1M, avg=1175070171.00, stdev= 0.00 lat (nsec): min=1175.1M, max=1175.1M, avg=1175071987.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 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= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2928KiB/s (2998kB/s)(8192KiB/2798msec); 0 zone resets clat (msec): min=782, max=835, avg=808.58, stdev=37.48 lat (msec): min=782, max=839, avg=810.82, stdev=40.12 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 8175, max= 8175, per=69.81%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.19%, ctx=46, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144546: Wed Aug 12 17:07:53 2026 write: IOPS=1, BW=4656KiB/s (4768kB/s)(12.0MiB/2639msec); 0 zone resets clat (msec): min=562, max=1101, avg=869.22, stdev=276.73 lat (msec): min=564, max=1101, avg=870.66, stdev=276.04 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8078, max= 8175, per=69.39%, avg=8126.50, stdev=68.59, 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=0.04%, sys=3.71%, ctx=40, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144547: Wed Aug 12 17:07:53 2026 write: IOPS=1, BW=6095KiB/s (6242kB/s)(12.0MiB/2016msec); 0 zone resets clat (msec): min=257, max=1111, avg=671.00, stdev=427.51 lat (msec): min=257, max=1111, avg=671.44, stdev=427.42 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 8078, max= 8078, per=68.98%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.31%, ctx=40, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5856KiB/s (5996kB/s), 1464KiB/s-4443KiB/s (1499kB/s-4549kB/s), io=16.0MiB (16.8MB), run=2766-2798msec WRITE: bw=11.4MiB/s (11.0MB/s), 2928KiB/s-6095KiB/s (2998kB/s-6242kB/s), io=32.0MiB (33.6MB), run=2016-2798msec