== sanity test 398b: DIO and buffer IO race ============== 10:42:32 (1786372952) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.4522 s, 7.8 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=146571: Mon Aug 10 10:44:19 2026 read: IOPS=17, BW=68.1KiB/s (69.7kB/s)(5992KiB/88025msec) clat (usec): min=35, max=861217, avg=29771.38, stdev=32422.68 lat (usec): min=35, max=861218, avg=29773.88, stdev=32422.86 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 63], 10.00th=[ 8455], 20.00th=[ 13829], | 30.00th=[ 17433], 40.00th=[ 21365], 50.00th=[ 25297], 60.00th=[ 29230], | 70.00th=[ 34341], 80.00th=[ 42206], 90.00th=[ 53740], 95.00th=[ 63701], | 99.00th=[112722], 99.50th=[130548], 99.90th=[387974], 99.95th=[859833], | 99.99th=[859833] bw ( KiB/s): min= 7, max= 143, per=25.01%, avg=68.04, stdev=25.47, samples=173 iops : min= 1, max= 35, avg=16.43, stdev= 6.40, samples=173 write: IOPS=17, BW=71.5KiB/s (73.2kB/s)(6296KiB/88025msec); 0 zone resets clat (usec): min=895, max=257132, avg=27464.27, stdev=26681.25 lat (usec): min=896, max=257135, avg=27467.21, stdev=26682.03 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1369], 10.00th=[ 1860], 20.00th=[ 3851], | 30.00th=[ 7767], 40.00th=[ 15008], 50.00th=[ 21365], 60.00th=[ 27657], | 70.00th=[ 35390], 80.00th=[ 45876], 90.00th=[ 62129], 95.00th=[ 74974], | 99.00th=[110625], 99.50th=[143655], 99.90th=[225444], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 7, max= 151, per=25.08%, avg=71.47, stdev=25.76, samples=173 iops : min= 1, max= 37, avg=17.28, stdev= 6.43, samples=173 lat (usec) : 50=0.65%, 100=3.03%, 250=0.39%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.70%, 4=4.75%, 10=8.17%, 20=19.11%, 50=43.39% lat (msec) : 100=13.09%, 250=1.43%, 500=0.10%, 1000=0.03% cpu : usr=0.09%, sys=7.96%, ctx=6814, 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=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=146572: Mon Aug 10 10:44:19 2026 read: IOPS=17, BW=68.2KiB/s (69.8kB/s)(5940KiB/87110msec) clat (usec): min=17, max=790896, avg=28709.83, stdev=29317.41 lat (usec): min=17, max=790899, avg=28713.24, stdev=29315.78 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 61], 10.00th=[ 3228], 20.00th=[ 13435], | 30.00th=[ 17171], 40.00th=[ 20055], 50.00th=[ 24773], 60.00th=[ 28705], | 70.00th=[ 33817], 80.00th=[ 41157], 90.00th=[ 51643], 95.00th=[ 64750], | 99.00th=[101188], 99.50th=[137364], 99.90th=[250610], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 7, max= 136, per=25.26%, avg=68.71, stdev=25.25, samples=170 iops : min= 1, max= 34, avg=16.59, stdev= 6.34, samples=170 write: IOPS=18, BW=72.9KiB/s (74.6kB/s)(6348KiB/87110msec); 0 zone resets clat (usec): min=892, max=254501, avg=27956.49, stdev=29395.58 lat (usec): min=894, max=254502, avg=27958.10, stdev=29395.75 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1369], 10.00th=[ 1876], 20.00th=[ 3752], | 30.00th=[ 6718], 40.00th=[ 13173], 50.00th=[ 20317], 60.00th=[ 27132], | 70.00th=[ 35914], 80.00th=[ 47449], 90.00th=[ 64750], 95.00th=[ 81265], | 99.00th=[128451], 99.50th=[162530], 99.90th=[244319], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 15, max= 176, per=25.55%, avg=72.82, stdev=28.42, samples=171 iops : min= 3, max= 44, avg=17.63, stdev= 7.15, samples=171 lat (usec) : 20=0.03%, 50=0.85%, 100=3.19%, 250=0.62%, 500=0.03% lat (usec) : 750=0.03%, 1000=0.13% lat (msec) : 2=5.44%, 4=5.66%, 10=8.37%, 20=20.12%, 50=41.02% lat (msec) : 100=12.79%, 250=1.63%, 500=0.07%, 1000=0.03% cpu : usr=0.10%, sys=8.10%, ctx=6892, 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=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=146573: Mon Aug 10 10:44:19 2026 read: IOPS=17, BW=68.4KiB/s (70.1kB/s)(6028KiB/88116msec) clat (usec): min=34, max=237242, avg=29083.07, stdev=22173.77 lat (usec): min=34, max=237244, avg=29085.02, stdev=22173.03 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 70], 10.00th=[ 7570], 20.00th=[ 13829], | 30.00th=[ 17171], 40.00th=[ 20579], 50.00th=[ 24249], 60.00th=[ 29754], | 70.00th=[ 35390], 80.00th=[ 42206], 90.00th=[ 53740], 95.00th=[ 65274], | 99.00th=[112722], 99.50th=[137364], 99.90th=[164627], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 7, max= 133, per=25.13%, avg=68.35, stdev=23.36, samples=173 iops : min= 1, max= 33, avg=16.51, stdev= 5.86, samples=173 write: IOPS=17, BW=71.0KiB/s (72.7kB/s)(6260KiB/88116msec); 0 zone resets clat (usec): min=843, max=922606, avg=28234.90, stdev=35645.48 lat (usec): min=845, max=922607, avg=28237.28, stdev=35645.27 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1369], 10.00th=[ 1860], 20.00th=[ 3589], | 30.00th=[ 6915], 40.00th=[ 14484], 50.00th=[ 21365], 60.00th=[ 28443], | 70.00th=[ 35914], 80.00th=[ 47449], 90.00th=[ 63177], 95.00th=[ 77071], | 99.00th=[114820], 99.50th=[141558], 99.90th=[329253], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 7, max= 159, per=24.84%, avg=70.80, stdev=25.58, samples=173 iops : min= 1, max= 39, avg=17.12, stdev= 6.40, samples=173 lat (usec) : 50=0.42%, 100=3.32%, 250=0.68%, 500=0.07%, 1000=0.10% lat (msec) : 2=5.99%, 4=5.31%, 10=7.78%, 20=19.53%, 50=41.28% lat (msec) : 100=13.87%, 250=1.60%, 500=0.03%, 1000=0.03% cpu : usr=0.09%, sys=8.07%, ctx=6914, 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=146574: Mon Aug 10 10:44:19 2026 read: IOPS=17, BW=70.3KiB/s (71.0kB/s)(6052KiB/86074msec) clat (usec): min=25, max=227788, avg=28015.85, stdev=20976.82 lat (usec): min=25, max=227790, avg=28017.90, stdev=20976.84 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 62], 10.00th=[ 6390], 20.00th=[ 13042], | 30.00th=[ 16450], 40.00th=[ 20055], 50.00th=[ 23987], 60.00th=[ 28967], | 70.00th=[ 34866], 80.00th=[ 41681], 90.00th=[ 52167], 95.00th=[ 63701], | 99.00th=[ 98042], 99.50th=[119014], 99.90th=[206570], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 7, max= 159, per=26.05%, avg=70.85, stdev=25.65, samples=168 iops : min= 1, max= 39, avg=17.14, stdev= 6.43, samples=168 write: IOPS=18, BW=72.4KiB/s (74.2kB/s)(6236KiB/86074msec); 0 zone resets clat (usec): min=972, max=916439, avg=27947.86, stdev=35201.29 lat (usec): min=974, max=916441, avg=27952.12, stdev=35202.12 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1352], 10.00th=[ 1745], 20.00th=[ 3556], | 30.00th=[ 6587], 40.00th=[ 13173], 50.00th=[ 20317], 60.00th=[ 27395], | 70.00th=[ 35914], 80.00th=[ 46924], 90.00th=[ 65799], 95.00th=[ 80217], | 99.00th=[120062], 99.50th=[141558], 99.90th=[177210], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 15, max= 198, per=25.43%, avg=72.47, stdev=26.63, samples=169 iops : min= 3, max= 49, avg=17.54, stdev= 6.67, samples=169 lat (usec) : 50=0.55%, 100=3.55%, 250=0.29%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=5.79%, 4=5.40%, 10=8.69%, 20=20.21%, 50=40.66% lat (msec) : 100=12.99%, 250=1.56%, 1000=0.03% cpu : usr=0.11%, sys=8.17%, ctx=6788, 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=273KiB/s (279kB/s), 68.1KiB/s-70.3KiB/s (69.7kB/s-71.0kB/s), io=23.4MiB (24.6MB), run=86074-88116msec WRITE: bw=285KiB/s (292kB/s), 71.0KiB/s-72.9KiB/s (72.7kB/s-74.6kB/s), io=24.6MiB (25.7MB), run=86074-88116msec fio: pid=146566, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=146566: Mon Aug 10 10:45:35 2026 read: IOPS=7, BW=29.6KiB/s (30.3kB/s)(3532KiB/119444msec) clat (msec): min=4, max=968, avg=31.23, stdev=42.89 lat (msec): min=4, max=968, avg=31.23, stdev=42.89 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 26], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 67], 95.00th=[ 91], | 99.00th=[ 157], 99.50th=[ 190], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7, max= 111, per=23.84%, avg=30.99, stdev=21.78, samples=222 iops : min= 1, max= 27, avg= 7.17, stdev= 5.50, samples=222 write: IOPS=7, BW=31.0KiB/s (31.8kB/s)(3704KiB/119444msec); 0 zone resets clat (msec): min=27, max=501, avg=98.73, stdev=52.39 lat (msec): min=27, max=501, avg=98.73, stdev=52.39 clat percentiles (msec): | 1.00th=[ 31], 5.00th=[ 41], 10.00th=[ 47], 20.00th=[ 56], | 30.00th=[ 66], 40.00th=[ 75], 50.00th=[ 87], 60.00th=[ 100], | 70.00th=[ 115], 80.00th=[ 138], 90.00th=[ 167], 95.00th=[ 201], | 99.00th=[ 271], 99.50th=[ 296], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 7, max= 80, per=22.60%, avg=30.96, stdev=16.40, samples=233 iops : min= 1, max= 20, avg= 7.15, stdev= 4.17, samples=233 lat (msec) : 10=10.06%, 20=15.58%, 50=21.27%, 100=30.88%, 250=21.44% lat (msec) : 500=0.61%, 750=0.06%, 1000=0.06% cpu : usr=0.04%, sys=1.95%, ctx=2908, majf=0, minf=21 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=884,926,0,0 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=146567: Mon Aug 10 10:45:35 2026 read: IOPS=9, BW=36.1KiB/s (36.0kB/s)(5940KiB/164564msec) clat (msec): min=4, max=880, avg=23.14, stdev=34.38 lat (msec): min=4, max=880, avg=23.14, stdev=34.38 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 31], 90.00th=[ 51], 95.00th=[ 72], | 99.00th=[ 120], 99.50th=[ 174], 99.90th=[ 460], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 120, per=29.67%, avg=38.56, stdev=25.72, samples=301 iops : min= 1, max= 30, avg= 9.11, stdev= 6.52, samples=301 write: IOPS=9, BW=38.6KiB/s (39.5kB/s)(6348KiB/164564msec); 0 zone resets clat (msec): min=22, max=440, avg=81.74, stdev=47.11 lat (msec): min=22, max=440, avg=81.74, stdev=47.11 clat percentiles (msec): | 1.00th=[ 29], 5.00th=[ 36], 10.00th=[ 40], 20.00th=[ 46], | 30.00th=[ 54], 40.00th=[ 59], 50.00th=[ 67], 60.00th=[ 77], | 70.00th=[ 92], 80.00th=[ 114], 90.00th=[ 144], 95.00th=[ 176], | 99.00th=[ 247], 99.50th=[ 284], 99.90th=[ 334], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 7, max= 111, per=27.95%, avg=38.29, stdev=19.83, samples=323 iops : min= 1, max= 27, avg= 9.02, stdev= 5.03, samples=323 lat (msec) : 10=14.71%, 20=18.98%, 50=22.79%, 100=29.39%, 250=13.61% lat (msec) : 500=0.49%, 1000=0.03% cpu : usr=0.06%, sys=2.17%, ctx=5570, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146568: Mon Aug 10 10:45:35 2026 read: IOPS=9, BW=36.9KiB/s (37.8kB/s)(6028KiB/163319msec) clat (msec): min=4, max=222, avg=23.40, stdev=24.31 lat (msec): min=4, max=222, avg=23.40, stdev=24.31 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 33], 90.00th=[ 54], 95.00th=[ 74], | 99.00th=[ 121], 99.50th=[ 131], 99.90th=[ 220], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 7, max= 120, per=29.20%, avg=37.96, stdev=25.42, samples=311 iops : min= 1, max= 30, avg= 8.94, stdev= 6.44, samples=311 write: IOPS=9, BW=38.3KiB/s (39.2kB/s)(6260KiB/163319msec); 0 zone resets clat (msec): min=20, max=980, avg=81.52, stdev=52.79 lat (msec): min=20, max=980, avg=81.53, stdev=52.78 clat percentiles (msec): | 1.00th=[ 31], 5.00th=[ 36], 10.00th=[ 40], 20.00th=[ 47], | 30.00th=[ 52], 40.00th=[ 57], 50.00th=[ 65], 60.00th=[ 74], | 70.00th=[ 89], 80.00th=[ 113], 90.00th=[ 146], 95.00th=[ 174], | 99.00th=[ 253], 99.50th=[ 292], 99.90th=[ 510], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 95, per=27.83%, avg=38.13, stdev=20.25, samples=321 iops : min= 1, max= 23, avg= 8.98, stdev= 5.15, samples=321 lat (msec) : 10=14.49%, 20=17.68%, 50=25.29%, 100=28.91%, 250=13.12% lat (msec) : 500=0.46%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=2.12%, ctx=5507, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146569: Mon Aug 10 10:45:35 2026 read: IOPS=9, BW=36.9KiB/s (37.8kB/s)(6052KiB/163959msec) clat (msec): min=4, max=287, avg=23.19, stdev=25.76 lat (msec): min=4, max=287, avg=23.19, stdev=25.75 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 33], 90.00th=[ 54], 95.00th=[ 71], | 99.00th=[ 130], 99.50th=[ 163], 99.90th=[ 241], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 7, max= 135, per=30.05%, avg=39.07, stdev=26.30, samples=303 iops : min= 1, max= 33, avg= 9.23, stdev= 6.62, samples=303 write: IOPS=9, BW=38.0KiB/s (38.9kB/s)(6236KiB/163959msec); 0 zone resets clat (msec): min=23, max=996, avg=82.37, stdev=51.80 lat (msec): min=23, max=996, avg=82.37, stdev=51.80 clat percentiles (msec): | 1.00th=[ 30], 5.00th=[ 36], 10.00th=[ 40], 20.00th=[ 47], | 30.00th=[ 54], 40.00th=[ 61], 50.00th=[ 67], 60.00th=[ 78], | 70.00th=[ 92], 80.00th=[ 111], 90.00th=[ 146], 95.00th=[ 180], | 99.00th=[ 249], 99.50th=[ 271], 99.90th=[ 502], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 95, per=27.51%, avg=37.69, stdev=19.55, samples=323 iops : min= 1, max= 23, avg= 8.87, stdev= 4.97, samples=323 lat (msec) : 10=15.01%, 20=18.59%, 50=22.40%, 100=30.05%, 250=13.51% lat (msec) : 500=0.39%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=2.15%, ctx=5659, 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=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=131KiB/s (134kB/s), 29.6KiB/s-36.9KiB/s (30.3kB/s-37.8kB/s), io=21.0MiB (22.1MB), run=119444-164564msec WRITE: bw=137KiB/s (140kB/s), 31.0KiB/s-38.6KiB/s (31.8kB/s-39.5kB/s), io=22.0MiB (23.1MB), run=119444-164564msec 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=146613: Mon Aug 10 10:45:56 2026 read: IOPS=24, BW=384KiB/s (394kB/s)(5920KiB/15401msec) clat (usec): min=37, max=151827, avg=20823.23, stdev=17184.49 lat (usec): min=38, max=151828, avg=20824.41, stdev=17184.54 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 56], 10.00th=[ 66], 20.00th=[ 169], | 30.00th=[ 12649], 40.00th=[ 16450], 50.00th=[ 19792], 60.00th=[ 23200], | 70.00th=[ 27132], 80.00th=[ 31065], 90.00th=[ 40633], 95.00th=[ 53216], | 99.00th=[ 71828], 99.50th=[ 78119], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 127, max= 672, per=25.08%, avg=384.80, stdev=114.56, samples=30 iops : min= 7, max= 42, avg=23.40, stdev= 7.30, samples=30 write: IOPS=25, BW=413KiB/s (423kB/s)(6368KiB/15401msec); 0 zone resets clat (usec): min=1157, max=171200, avg=19039.31, stdev=20169.73 lat (usec): min=1158, max=171202, avg=19041.24, stdev=20169.83 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1975], 10.00th=[ 2376], 20.00th=[ 3621], | 30.00th=[ 5473], 40.00th=[ 8586], 50.00th=[ 12518], 60.00th=[ 18744], | 70.00th=[ 25297], 80.00th=[ 31327], 90.00th=[ 41681], 95.00th=[ 50594], | 99.00th=[ 98042], 99.50th=[164627], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 212, max= 637, per=25.77%, avg=415.97, stdev=117.58, samples=30 iops : min= 13, max= 39, avg=25.37, stdev= 7.40, samples=30 lat (usec) : 50=1.43%, 100=7.03%, 250=1.30%, 500=0.39% lat (msec) : 2=2.86%, 4=9.51%, 10=12.37%, 20=22.14%, 50=37.63% lat (msec) : 100=4.82%, 250=0.52% cpu : usr=0.08%, sys=12.90%, ctx=1718, 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=146614: Mon Aug 10 10:45:56 2026 read: IOPS=23, BW=378KiB/s (387kB/s)(5744KiB/15195msec) clat (usec): min=24, max=67233, avg=20948.93, stdev=14361.55 lat (usec): min=24, max=67235, avg=20951.58, stdev=14361.84 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 124], | 30.00th=[15008], 40.00th=[18744], 50.00th=[21627], 60.00th=[23987], | 70.00th=[28443], 80.00th=[32113], 90.00th=[39060], 95.00th=[44303], | 99.00th=[56886], 99.50th=[59507], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 127, max= 606, per=25.05%, avg=384.21, stdev=121.73, samples=29 iops : min= 7, max= 37, avg=23.38, stdev= 7.72, samples=29 write: IOPS=26, BW=431KiB/s (441kB/s)(6544KiB/15195msec); 0 zone resets clat (usec): min=1402, max=108486, avg=18666.45, stdev=17845.19 lat (usec): min=1405, max=108489, avg=18671.27, stdev=17844.90 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 2024], 10.00th=[ 2573], 20.00th=[ 3949], | 30.00th=[ 5800], 40.00th=[ 8291], 50.00th=[ 14091], 60.00th=[ 17957], | 70.00th=[ 24511], 80.00th=[ 31327], 90.00th=[ 42730], 95.00th=[ 54789], | 99.00th=[ 74974], 99.50th=[105382], 99.90th=[108528], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 253, max= 633, per=26.80%, avg=432.52, stdev=100.14, samples=29 iops : min= 15, max= 39, avg=26.38, stdev= 6.36, samples=29 lat (usec) : 50=1.17%, 100=6.38%, 250=2.08%, 500=0.13%, 750=0.13% lat (msec) : 2=2.60%, 4=8.07%, 10=14.06%, 20=19.01%, 50=41.67% lat (msec) : 100=4.30%, 250=0.39% cpu : usr=0.09%, sys=13.26%, ctx=1674, 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=146615: Mon Aug 10 10:45:56 2026 read: IOPS=25, BW=401KiB/s (410kB/s)(6256KiB/15613msec) clat (usec): min=35, max=87276, avg=20197.68, stdev=16507.69 lat (usec): min=36, max=87277, avg=20203.00, stdev=16502.89 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 58], 10.00th=[ 68], 20.00th=[ 110], | 30.00th=[11994], 40.00th=[16188], 50.00th=[18744], 60.00th=[22414], | 70.00th=[26346], 80.00th=[32900], 90.00th=[41157], 95.00th=[51643], | 99.00th=[70779], 99.50th=[78119], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 220, max= 704, per=26.28%, avg=403.17, stdev=124.68, samples=30 iops : min= 13, max= 44, avg=24.53, stdev= 7.91, samples=30 write: IOPS=24, BW=386KiB/s (396kB/s)(6032KiB/15613msec); 0 zone resets clat (usec): min=1286, max=131008, avg=20142.29, stdev=19681.91 lat (usec): min=1288, max=131010, avg=20146.98, stdev=19681.69 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1876], 10.00th=[ 2737], 20.00th=[ 4113], | 30.00th=[ 6718], 40.00th=[ 10421], 50.00th=[ 13435], 60.00th=[ 18220], | 70.00th=[ 25822], 80.00th=[ 33817], 90.00th=[ 45351], 95.00th=[ 56886], | 99.00th=[ 81265], 99.50th=[130548], 99.90th=[130548], 99.95th=[130548], | 99.99th=[130548] bw ( KiB/s): min= 191, max= 576, per=23.77%, avg=383.67, stdev=113.19, samples=30 iops : min= 11, max= 36, avg=23.33, stdev= 7.19, samples=30 lat (usec) : 50=1.43%, 100=8.07%, 250=2.73%, 500=0.39%, 1000=0.13% lat (msec) : 2=2.99%, 4=6.38%, 10=10.68%, 20=25.26%, 50=35.16% lat (msec) : 100=6.38%, 250=0.39% cpu : usr=0.10%, sys=12.05%, ctx=1627, 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=146616: Mon Aug 10 10:45:56 2026 read: IOPS=24, BW=392KiB/s (401kB/s)(6032KiB/15398msec) clat (usec): min=36, max=191155, avg=20134.45, stdev=18108.09 lat (usec): min=36, max=191156, avg=20139.08, stdev=18104.74 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 53], 10.00th=[ 59], 20.00th=[ 105], | 30.00th=[ 11600], 40.00th=[ 16057], 50.00th=[ 19268], 60.00th=[ 22152], | 70.00th=[ 26870], 80.00th=[ 32113], 90.00th=[ 38536], 95.00th=[ 47973], | 99.00th=[ 69731], 99.50th=[ 89654], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 192, max= 728, per=25.63%, avg=393.10, stdev=116.41, samples=30 iops : min= 12, max= 45, avg=23.93, stdev= 7.29, samples=30 write: IOPS=25, BW=406KiB/s (416kB/s)(6256KiB/15398msec); 0 zone resets clat (usec): min=1459, max=129817, avg=19711.37, stdev=20191.35 lat (usec): min=1460, max=129819, avg=19715.64, stdev=20191.87 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2057], 10.00th=[ 2868], 20.00th=[ 4080], | 30.00th=[ 5538], 40.00th=[ 8160], 50.00th=[ 13173], 60.00th=[ 16909], | 70.00th=[ 24249], 80.00th=[ 33424], 90.00th=[ 46924], 95.00th=[ 62653], | 99.00th=[ 86508], 99.50th=[109577], 99.90th=[129500], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 254, max= 664, per=25.39%, avg=409.87, stdev=110.80, samples=30 iops : min= 15, max= 41, avg=25.00, stdev= 7.01, samples=30 lat (usec) : 50=2.21%, 100=7.29%, 250=2.34%, 500=0.26%, 1000=0.13% lat (msec) : 2=2.47%, 4=7.29%, 10=13.54%, 20=23.44%, 50=35.03% lat (msec) : 100=5.47%, 250=0.52% cpu : usr=0.11%, sys=12.55%, ctx=1647, 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=1534KiB/s (1571kB/s), 378KiB/s-401KiB/s (387kB/s-410kB/s), io=23.4MiB (24.5MB), run=15195-15613msec WRITE: bw=1614KiB/s (1653kB/s), 386KiB/s-431KiB/s (396kB/s-441kB/s), io=24.6MiB (25.8MB), run=15195-15613msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146618: Mon Aug 10 10:46:16 2026 read: IOPS=10, BW=167KiB/s (171kB/s)(5920KiB/35422msec) clat (msec): min=5, max=173, avg=20.05, stdev=17.59 lat (msec): min=5, max=173, avg=20.05, stdev=17.59 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 20], 80.00th=[ 27], 90.00th=[ 42], 95.00th=[ 53], | 99.00th=[ 95], 99.50th=[ 109], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 31, max= 416, per=25.14%, avg=169.20, stdev=96.57, samples=69 iops : min= 1, max= 26, avg= 9.93, stdev= 6.12, samples=69 write: IOPS=11, BW=180KiB/s (184kB/s)(6368KiB/35422msec); 0 zone resets clat (msec): min=25, max=244, avg=69.87, stdev=32.96 lat (msec): min=25, max=244, avg=69.87, stdev=32.96 clat percentiles (msec): | 1.00th=[ 29], 5.00th=[ 35], 10.00th=[ 40], 20.00th=[ 45], | 30.00th=[ 50], 40.00th=[ 56], 50.00th=[ 63], 60.00th=[ 68], | 70.00th=[ 77], 80.00th=[ 88], 90.00th=[ 113], 95.00th=[ 140], | 99.00th=[ 192], 99.50th=[ 228], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 31, max= 352, per=25.30%, avg=179.36, stdev=79.42, samples=70 iops : min= 1, max= 22, avg=10.57, stdev= 5.12, samples=70 lat (msec) : 10=10.81%, 20=23.57%, 50=26.95%, 100=31.90%, 250=6.77% cpu : usr=0.09%, sys=2.92%, ctx=1396, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146619: Mon Aug 10 10:46:16 2026 read: IOPS=10, BW=162KiB/s (165kB/s)(5744KiB/35541msec) clat (msec): min=4, max=179, avg=21.92, stdev=23.45 lat (msec): min=4, max=179, avg=21.92, stdev=23.45 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 28], 90.00th=[ 47], 95.00th=[ 73], | 99.00th=[ 121], 99.50th=[ 165], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 26, max= 448, per=24.89%, avg=167.54, stdev=101.99, samples=67 iops : min= 1, max= 28, avg= 9.82, stdev= 6.52, samples=67 write: IOPS=11, BW=184KiB/s (189kB/s)(6544KiB/35541msec); 0 zone resets clat (msec): min=21, max=227, avg=67.45, stdev=31.12 lat (msec): min=21, max=227, avg=67.45, stdev=31.12 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 33], 10.00th=[ 37], 20.00th=[ 44], | 30.00th=[ 51], 40.00th=[ 55], 50.00th=[ 61], 60.00th=[ 66], | 70.00th=[ 74], 80.00th=[ 88], 90.00th=[ 110], 95.00th=[ 126], | 99.00th=[ 174], 99.50th=[ 186], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 31, max= 384, per=25.71%, avg=182.31, stdev=77.03, samples=70 iops : min= 1, max= 24, avg=10.76, stdev= 4.95, samples=70 lat (msec) : 10=12.50%, 20=20.70%, 50=25.65%, 100=32.81%, 250=8.33% cpu : usr=0.06%, sys=2.84%, ctx=1392, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146620: Mon Aug 10 10:46:16 2026 read: IOPS=11, BW=181KiB/s (185kB/s)(6256KiB/34650msec) clat (msec): min=4, max=153, avg=20.26, stdev=20.53 lat (msec): min=4, max=153, avg=20.26, stdev=20.53 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 44], 95.00th=[ 62], | 99.00th=[ 118], 99.50th=[ 138], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 31, max= 576, per=27.10%, avg=182.38, stdev=121.89, samples=68 iops : min= 1, max= 36, avg=10.76, stdev= 7.78, samples=68 write: IOPS=10, BW=174KiB/s (178kB/s)(6032KiB/34650msec); 0 zone resets clat (msec): min=24, max=246, avg=70.45, stdev=32.12 lat (msec): min=24, max=246, avg=70.46, stdev=32.12 clat percentiles (msec): | 1.00th=[ 28], 5.00th=[ 35], 10.00th=[ 41], 20.00th=[ 46], | 30.00th=[ 51], 40.00th=[ 57], 50.00th=[ 63], 60.00th=[ 70], | 70.00th=[ 79], 80.00th=[ 89], 90.00th=[ 112], 95.00th=[ 136], | 99.00th=[ 188], 99.50th=[ 220], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 62, max= 320, per=24.51%, avg=173.76, stdev=70.29, samples=68 iops : min= 3, max= 20, avg=10.24, stdev= 4.54, samples=68 lat (msec) : 10=14.84%, 20=23.57%, 50=22.53%, 100=30.73%, 250=8.33% cpu : usr=0.04%, sys=3.04%, ctx=1490, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146621: Mon Aug 10 10:46:16 2026 read: IOPS=10, BW=171KiB/s (176kB/s)(6032KiB/35179msec) clat (msec): min=5, max=116, avg=19.86, stdev=17.06 lat (msec): min=5, max=116, avg=19.86, stdev=17.06 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 40], 95.00th=[ 56], | 99.00th=[ 89], 99.50th=[ 105], 99.90th=[ 116], 99.95th=[ 116], | 99.99th=[ 116] bw ( KiB/s): min= 26, max= 442, per=26.03%, avg=175.16, stdev=100.02, samples=67 iops : min= 1, max= 27, avg=10.30, stdev= 6.35, samples=67 write: IOPS=11, BW=178KiB/s (182kB/s)(6256KiB/35179msec); 0 zone resets clat (msec): min=21, max=230, avg=70.30, stdev=32.09 lat (msec): min=21, max=230, avg=70.30, stdev=32.09 clat percentiles (msec): | 1.00th=[ 28], 5.00th=[ 35], 10.00th=[ 39], 20.00th=[ 46], | 30.00th=[ 51], 40.00th=[ 57], 50.00th=[ 64], 60.00th=[ 70], | 70.00th=[ 77], 80.00th=[ 90], 90.00th=[ 112], 95.00th=[ 136], | 99.00th=[ 190], 99.50th=[ 205], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 63, max= 384, per=24.99%, avg=177.17, stdev=72.94, samples=69 iops : min= 3, max= 24, avg=10.43, stdev= 4.71, samples=69 lat (msec) : 10=13.28%, 20=21.88%, 50=25.13%, 100=32.68%, 250=7.03% cpu : usr=0.06%, sys=2.92%, ctx=1395, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=674KiB/s (690kB/s), 162KiB/s-181KiB/s (165kB/s-185kB/s), io=23.4MiB (24.5MB), run=34650-35541msec WRITE: bw=709KiB/s (726kB/s), 174KiB/s-184KiB/s (178kB/s-189kB/s), io=24.6MiB (25.8MB), run=34650-35541msec 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=146631: Mon Aug 10 10:46:26 2026 read: IOPS=1, BW=1897KiB/s (1943kB/s)(7168KiB/3778msec) clat (usec): min=435, max=1248.9k, avg=369289.81, stdev=522396.42 lat (usec): min=436, max=1248.9k, avg=369291.34, stdev=522396.57 clat percentiles (usec): | 1.00th=[ 437], 5.00th=[ 437], 10.00th=[ 437], | 20.00th=[ 603], 30.00th=[ 17695], 40.00th=[ 17695], | 50.00th=[ 145753], 60.00th=[ 183501], 70.00th=[ 183501], | 80.00th=[ 985662], 90.00th=[1249903], 95.00th=[1249903], | 99.00th=[1249903], 99.50th=[1249903], 99.90th=[1249903], | 99.95th=[1249903], 99.99th=[1249903] bw ( KiB/s): min= 2043, max= 4047, per=70.52%, avg=3327.67, stdev=1115.22, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1355KiB/s (1388kB/s)(5120KiB/3778msec); 0 zone resets clat (msec): min=79, max=379, avg=213.72, stdev=119.41 lat (msec): min=79, max=379, avg=213.79, stdev=119.38 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 80], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 178], 60.00th=[ 178], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 380], 95.00th=[ 380], | 99.00th=[ 380], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 1946, max= 6095, per=60.85%, avg=4020.50, stdev=2933.79, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 20=8.33%, 100=8.33%, 250=33.33%, 500=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=16.79%, ctx=613, 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=146632: Mon Aug 10 10:46:26 2026 read: IOPS=0, BW=472KiB/s (483kB/s)(2048KiB/4339msec) clat (msec): min=85, max=234, avg=160.07, stdev=104.81 lat (msec): min=85, max=234, avg=160.07, stdev=104.81 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=[ 234], | 70.00th=[ 234], 80.00th=[ 234], 90.00th=[ 234], 95.00th=[ 234], | 99.00th=[ 234], 99.50th=[ 234], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 1777, max= 2035, per=40.39%, avg=1906.00, stdev=182.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2360KiB/s (2417kB/s)(10.0MiB/4339msec); 0 zone resets clat (msec): min=74, max=2115, avg=398.76, stdev=616.49 lat (msec): min=74, max=2115, avg=398.86, stdev=616.48 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 86], | 30.00th=[ 96], 40.00th=[ 111], 50.00th=[ 169], 60.00th=[ 215], | 70.00th=[ 326], 80.00th=[ 372], 90.00th=[ 430], 95.00th=[ 2123], | 99.00th=[ 2123], 99.50th=[ 2123], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 1777, max= 6107, per=48.25%, avg=3188.20, stdev=1878.78, samples=5 iops : min= 1, max= 5, avg= 2.40, stdev= 1.67, samples=5 lat (msec) : 100=33.33%, 250=33.33%, 500=25.00%, >=2000=8.33% cpu : usr=0.02%, sys=16.52%, ctx=399, 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=146633: Mon Aug 10 10:46:26 2026 read: IOPS=1, BW=1773KiB/s (1816kB/s)(6144KiB/3465msec) clat (usec): min=537, max=276840, avg=115287.71, stdev=108611.29 lat (usec): min=538, max=276842, avg=115290.06, stdev=108611.41 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 545], | 30.00th=[ 545], 40.00th=[100140], 50.00th=[100140], 60.00th=[120062], | 70.00th=[193987], 80.00th=[193987], 90.00th=[278922], 95.00th=[278922], | 99.00th=[278922], 99.50th=[278922], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 1946, max= 6131, per=71.52%, avg=3375.00, stdev=2387.31, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=1, BW=1773KiB/s (1816kB/s)(6144KiB/3465msec); 0 zone resets clat (msec): min=98, max=1300, avg=453.69, stdev=448.09 lat (msec): min=98, max=1300, avg=454.04, stdev=447.98 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 111], | 30.00th=[ 111], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 342], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 1822, max= 4096, per=37.49%, avg=2476.75, stdev=1083.28, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (usec) : 750=16.67% lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.03%, sys=17.41%, ctx=263, 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=146634: Mon Aug 10 10:46:26 2026 read: IOPS=1, BW=1634KiB/s (1673kB/s)(5120KiB/3134msec) clat (usec): min=512, max=196757, avg=98146.79, stdev=93835.20 lat (usec): min=514, max=196759, avg=98148.19, stdev=93834.74 clat percentiles (usec): | 1.00th=[ 515], 5.00th=[ 515], 10.00th=[ 515], 20.00th=[ 515], | 30.00th=[ 619], 40.00th=[ 619], 50.00th=[116917], 60.00th=[116917], | 70.00th=[177210], 80.00th=[177210], 90.00th=[196084], 95.00th=[196084], | 99.00th=[196084], 99.50th=[196084], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 4087, max= 4096, per=86.70%, avg=4091.50, stdev= 6.36, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2287KiB/s (2342kB/s)(7168KiB/3134msec); 0 zone resets clat (msec): min=96, max=1643, avg=369.04, stdev=565.34 lat (msec): min=97, max=1643, avg=369.30, stdev=565.27 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 104], | 30.00th=[ 127], 40.00th=[ 127], 50.00th=[ 132], 60.00th=[ 220], | 70.00th=[ 220], 80.00th=[ 266], 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= 1946, max= 4096, per=52.34%, avg=3458.00, stdev=1024.51, samples=4 iops : min= 1, max= 4, avg= 2.75, stdev= 1.26, samples=4 lat (usec) : 750=16.67% lat (msec) : 100=8.33%, 250=58.33%, 500=8.33%, 2000=8.33% cpu : usr=0.03%, sys=19.18%, ctx=443, 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=4720KiB/s (4833kB/s), 472KiB/s-1897KiB/s (483kB/s-1943kB/s), io=20.0MiB (20.0MB), run=3134-4339msec WRITE: bw=6608KiB/s (6767kB/s), 1355KiB/s-2360KiB/s (1388kB/s-2417kB/s), io=28.0MiB (29.4MB), run=3134-4339msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146636: Mon Aug 10 10:46:27 2026 read: IOPS=1, BW=1419KiB/s (1453kB/s)(7168KiB/5052msec) clat (msec): min=47, max=2354, avg=570.41, stdev=816.35 lat (msec): min=47, max=2354, avg=570.41, stdev=816.35 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 48], 10.00th=[ 48], 20.00th=[ 91], | 30.00th=[ 209], 40.00th=[ 209], 50.00th=[ 271], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 718], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 2023, max= 2043, per=50.21%, avg=2035.00, stdev= 9.38, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=0, BW=1013KiB/s (1038kB/s)(5120KiB/5052msec); 0 zone resets clat (msec): min=71, max=578, avg=205.23, stdev=210.61 lat (msec): min=71, max=579, avg=205.48, stdev=210.88 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 71], | 30.00th=[ 102], 40.00th=[ 102], 50.00th=[ 126], 60.00th=[ 126], | 70.00th=[ 150], 80.00th=[ 150], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 2043, max= 4079, per=53.94%, avg=3061.00, stdev=1439.67, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (msec) : 50=8.33%, 100=16.67%, 250=33.33%, 500=16.67%, 750=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.36%, ctx=69, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146637: Mon Aug 10 10:46:27 2026 read: IOPS=0, BW=429KiB/s (439kB/s)(2048KiB/4772msec) clat (msec): min=165, max=349, avg=257.57, stdev=129.63 lat (msec): min=165, max=349, avg=257.57, stdev=129.63 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 167], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 1438, max= 2043, per=42.94%, avg=1740.50, stdev=427.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2146KiB/s (2197kB/s)(10.0MiB/4772msec); 0 zone resets clat (msec): min=90, max=1779, avg=392.82, stdev=496.25 lat (msec): min=90, max=1779, avg=392.92, stdev=496.27 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 140], | 30.00th=[ 184], 40.00th=[ 213], 50.00th=[ 245], 60.00th=[ 245], | 70.00th=[ 255], 80.00th=[ 376], 90.00th=[ 405], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 2023, max= 4087, per=64.60%, avg=3666.20, stdev=918.67, samples=5 iops : min= 1, max= 3, avg= 2.60, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=4.57%, ctx=88, 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=146638: Mon Aug 10 10:46:27 2026 read: IOPS=1, BW=1374KiB/s (1407kB/s)(6144KiB/4472msec) clat (msec): min=67, max=427, avg=152.31, stdev=137.64 lat (msec): min=67, max=427, avg=152.31, stdev=137.64 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 74], | 30.00th=[ 74], 40.00th=[ 87], 50.00th=[ 87], 60.00th=[ 121], | 70.00th=[ 138], 80.00th=[ 138], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 4055, max= 6131, per=100.00%, avg=5093.00, stdev=1467.95, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1374KiB/s (1407kB/s)(6144KiB/4472msec); 0 zone resets clat (msec): min=101, max=2045, avg=557.92, stdev=745.78 lat (msec): min=101, max=2045, avg=558.08, stdev=745.76 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 124], | 30.00th=[ 124], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 347], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 2027, max= 4079, per=44.90%, avg=2548.00, stdev=1020.69, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=25.00%, 250=41.67%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=5.79%, ctx=133, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146639: Mon Aug 10 10:46:27 2026 read: IOPS=1, BW=1064KiB/s (1089kB/s)(5120KiB/4813msec) clat (msec): min=50, max=294, avg=163.16, stdev=104.27 lat (msec): min=50, max=294, avg=163.16, stdev=104.27 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 51], | 30.00th=[ 70], 40.00th=[ 70], 50.00th=[ 169], 60.00th=[ 169], | 70.00th=[ 232], 80.00th=[ 232], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 2039, max= 6131, per=100.00%, avg=4085.00, stdev=2893.48, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1489KiB/s (1525kB/s)(7168KiB/4813msec); 0 zone resets clat (msec): min=132, max=1645, avg=523.09, stdev=550.10 lat (msec): min=132, max=1645, avg=523.20, stdev=550.11 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 138], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 313], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 810], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 2023, max= 4079, per=43.03%, avg=2442.20, stdev=915.04, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=5.28%, ctx=104, 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=4054KiB/s (4151kB/s), 429KiB/s-1419KiB/s (439kB/s-1453kB/s), io=20.0MiB (20.0MB), run=4472-5052msec WRITE: bw=5675KiB/s (5812kB/s), 1013KiB/s-2146KiB/s (1038kB/s-2197kB/s), io=28.0MiB (29.4MB), run=4472-5052msec 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=146646: Mon Aug 10 10:46:38 2026 read: IOPS=0, BW=3940KiB/s (4034kB/s)(12.0MiB/3119msec) clat (msec): min=615, max=1829, avg=1021.28, stdev=699.62 lat (msec): min=615, max=1829, avg=1021.28, stdev=699.62 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 1838], 80.00th=[ 1838], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 5818, max= 7922, per=100.00%, avg=6870.00, stdev=1487.75, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=15.68%, ctx=583, 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=146647: Mon Aug 10 10:46:38 2026 read: IOPS=0, BW=985KiB/s (1009kB/s)(4096KiB/4157msec) clat (nsec): min=461026k, max=461026k, avg=461025822.00, stdev= 0.00 lat (nsec): min=461029k, max=461029k, avg=461028775.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1971KiB/s (2018kB/s)(8192KiB/4157msec); 0 zone resets clat (msec): min=1194, max=2400, avg=1797.54, stdev=852.66 lat (msec): min=1196, max=2400, avg=1798.60, stdev=851.70 clat percentiles (msec): | 1.00th=[ 1200], 5.00th=[ 1200], 10.00th=[ 1200], 20.00th=[ 1200], | 30.00th=[ 1200], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 2400], | 70.00th=[ 2400], 80.00th=[ 2400], 90.00th=[ 2400], 95.00th=[ 2400], | 99.00th=[ 2400], 99.50th=[ 2400], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.94%, ctx=169, 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=146650: Mon Aug 10 10:46:38 2026 write: IOPS=0, BW=2942KiB/s (3012kB/s)(12.0MiB/4177msec); 0 zone resets clat (msec): min=274, max=2213, avg=1382.76, stdev=999.01 lat (msec): min=275, max=2214, avg=1383.78, stdev=998.46 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 1653], 50.00th=[ 1653], 60.00th=[ 1653], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 8143, max= 8175, per=100.00%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=3.09%, ctx=41, 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=146651: Mon Aug 10 10:46:38 2026 write: IOPS=0, BW=3244KiB/s (3322kB/s)(12.0MiB/3788msec); 0 zone resets clat (msec): min=296, max=1963, avg=1231.92, stdev=851.96 lat (msec): min=296, max=1963, avg=1233.06, stdev=852.31 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 1435], 50.00th=[ 1435], 60.00th=[ 1435], | 70.00th=[ 1972], 80.00th=[ 1972], 90.00th=[ 1972], 95.00th=[ 1972], | 99.00th=[ 1972], 99.50th=[ 1972], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min= 8047, max= 8175, per=100.00%, avg=8111.00, stdev=90.51, 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=0.05%, sys=3.41%, ctx=47, 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=3941KiB/s (4036kB/s), 985KiB/s-3940KiB/s (1009kB/s-4034kB/s), io=16.0MiB (16.8MB), run=3119-4157msec WRITE: bw=7845KiB/s (8033kB/s), 1971KiB/s-3244KiB/s (2018kB/s-3322kB/s), io=32.0MiB (33.6MB), run=3788-4177msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146648: Mon Aug 10 10:46:38 2026 read: IOPS=0, BW=4062KiB/s (4160kB/s)(12.0MiB/3025msec) clat (msec): min=611, max=1630, avg=993.13, stdev=555.42 lat (msec): min=611, max=1630, avg=993.13, stdev=555.42 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 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= 8047, max= 8159, per=100.00%, avg=8103.00, stdev=79.20, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.00%, ctx=53, 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=146649: Mon Aug 10 10:46:38 2026 read: IOPS=0, BW=938KiB/s (960kB/s)(4096KiB/4367msec) clat (nsec): min=900181k, max=900181k, avg=900181015.00, stdev= 0.00 lat (nsec): min=900184k, max=900184k, avg=900184117.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 902], 5.00th=[ 902], 10.00th=[ 902], 20.00th=[ 902], | 30.00th=[ 902], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1876KiB/s (1921kB/s)(8192KiB/4367msec); 0 zone resets clat (msec): min=902, max=2498, avg=1700.69, stdev=1128.88 lat (msec): min=903, max=2499, avg=1701.43, stdev=1128.39 clat percentiles (msec): | 1.00th=[ 902], 5.00th=[ 902], 10.00th=[ 902], 20.00th=[ 902], | 30.00th=[ 902], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 2500], | 70.00th=[ 2500], 80.00th=[ 2500], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.54%, ctx=47, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146652: Mon Aug 10 10:46:38 2026 write: IOPS=0, BW=3696KiB/s (3784kB/s)(12.0MiB/3325msec); 0 zone resets clat (msec): min=354, max=1767, avg=1060.24, stdev=706.53 lat (msec): min=356, max=1768, avg=1061.45, stdev=705.80 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, 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=6.05%, ctx=57, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146653: Mon Aug 10 10:46:38 2026 write: IOPS=0, BW=3488KiB/s (3572kB/s)(12.0MiB/3523msec); 0 zone resets clat (msec): min=302, max=1999, avg=1144.77, stdev=848.56 lat (msec): min=302, max=2000, avg=1145.15, stdev=848.64 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 2005], 80.00th=[ 2005], 90.00th=[ 2005], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.63%, ctx=47, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3752KiB/s (3842kB/s), 938KiB/s-4062KiB/s (960kB/s-4160kB/s), io=16.0MiB (16.8MB), run=3025-4367msec WRITE: bw=7504KiB/s (7684kB/s), 1876KiB/s-3696KiB/s (1921kB/s-3784kB/s), io=32.0MiB (33.6MB), run=3325-4367msec