== sanity test 398b: DIO and buffer IO race ============== 17:16:26 (1787606186) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.82986 s, 6.4 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=178956: Mon Aug 24 17:19:12 2026 read: IOPS=10, BW=41.3KiB/s (42.3kB/s)(5992KiB/145081msec) clat (usec): min=34, max=1052.3k, avg=53445.69, stdev=44108.73 lat (usec): min=34, max=1052.3k, avg=53451.08, stdev=44109.26 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 14484], 10.00th=[ 19792], | 20.00th=[ 26084], 30.00th=[ 32113], 40.00th=[ 39584], | 50.00th=[ 45351], 60.00th=[ 53216], 70.00th=[ 61604], | 80.00th=[ 72877], 90.00th=[ 93848], 95.00th=[ 117965], | 99.00th=[ 187696], 99.50th=[ 210764], 99.90th=[ 417334], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 7, max= 111, per=24.93%, avg=40.89, stdev=19.18, samples=284 iops : min= 1, max= 27, avg= 9.54, stdev= 4.83, samples=284 write: IOPS=10, BW=43.4KiB/s (44.4kB/s)(6296KiB/145081msec); 0 zone resets clat (usec): min=1063, max=331484, avg=41135.56, stdev=43384.31 lat (usec): min=1063, max=331486, avg=41138.14, stdev=43383.75 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1369], 10.00th=[ 1958], 20.00th=[ 5538], | 30.00th=[ 9765], 40.00th=[ 20055], 50.00th=[ 28443], 60.00th=[ 38536], | 70.00th=[ 52167], 80.00th=[ 67634], 90.00th=[ 99091], 95.00th=[127402], | 99.00th=[189793], 99.50th=[227541], 99.90th=[316670], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 7, max= 142, per=25.39%, avg=43.42, stdev=20.49, samples=281 iops : min= 1, max= 35, avg=10.18, stdev= 5.17, samples=281 lat (usec) : 50=0.03%, 100=1.27%, 250=0.13%, 750=0.03% lat (msec) : 2=5.21%, 4=3.19%, 10=7.39%, 20=8.27%, 50=36.78% lat (msec) : 100=28.61%, 250=8.82%, 500=0.23%, 2000=0.03% cpu : usr=0.08%, sys=4.85%, ctx=6597, 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=178957: Mon Aug 24 17:19:12 2026 read: IOPS=10, BW=41.1KiB/s (42.1kB/s)(5940KiB/144550msec) clat (usec): min=45, max=960326, avg=54485.23, stdev=43112.94 lat (usec): min=45, max=960328, avg=54486.91, stdev=43113.19 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 14353], 10.00th=[ 19792], 20.00th=[ 26346], | 30.00th=[ 31851], 40.00th=[ 38011], 50.00th=[ 45876], 60.00th=[ 54264], | 70.00th=[ 63701], 80.00th=[ 77071], 90.00th=[ 98042], 95.00th=[121111], | 99.00th=[187696], 99.50th=[212861], 99.90th=[312476], 99.95th=[960496], | 99.99th=[960496] bw ( KiB/s): min= 7, max= 111, per=25.08%, avg=41.14, stdev=18.44, samples=280 iops : min= 1, max= 27, avg= 9.61, stdev= 4.63, samples=280 write: IOPS=10, BW=43.9KiB/s (44.0kB/s)(6348KiB/144550msec); 0 zone resets clat (usec): min=1071, max=317441, avg=39945.51, stdev=41587.40 lat (usec): min=1071, max=317443, avg=39947.36, stdev=41587.46 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1369], 10.00th=[ 1909], 20.00th=[ 5145], | 30.00th=[ 9634], 40.00th=[ 19530], 50.00th=[ 28967], 60.00th=[ 38011], | 70.00th=[ 50594], 80.00th=[ 68682], 90.00th=[ 93848], 95.00th=[115868], | 99.00th=[185598], 99.50th=[225444], 99.90th=[312476], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 126, per=25.67%, avg=43.90, stdev=21.30, samples=280 iops : min= 1, max= 31, avg=10.30, stdev= 5.37, samples=280 lat (usec) : 50=0.10%, 100=1.27%, 250=0.13%, 750=0.07% lat (msec) : 2=5.50%, 4=3.26%, 10=7.13%, 20=8.40%, 50=36.78% lat (msec) : 100=28.68%, 250=8.43%, 500=0.23%, 1000=0.03% cpu : usr=0.09%, sys=4.88%, ctx=6526, 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=178958: Mon Aug 24 17:19:12 2026 read: IOPS=10, BW=41.2KiB/s (42.2kB/s)(6028KiB/146315msec) clat (usec): min=41, max=262202, avg=53410.76, stdev=36389.36 lat (usec): min=41, max=262204, avg=53414.93, stdev=36388.77 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 11076], 10.00th=[ 17171], 20.00th=[ 26084], | 30.00th=[ 32113], 40.00th=[ 39060], 50.00th=[ 45876], 60.00th=[ 53740], | 70.00th=[ 63177], 80.00th=[ 76022], 90.00th=[ 98042], 95.00th=[122160], | 99.00th=[181404], 99.50th=[212861], 99.90th=[261096], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 7, max= 152, per=24.92%, avg=40.87, stdev=18.91, samples=286 iops : min= 1, max= 38, avg= 9.54, stdev= 4.78, samples=286 write: IOPS=10, BW=42.8KiB/s (43.8kB/s)(6260KiB/146315msec); 0 zone resets clat (usec): min=1029, max=996606, avg=41909.55, stdev=49646.54 lat (usec): min=1031, max=996610, avg=41914.88, stdev=49646.46 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1418], 10.00th=[ 2147], 20.00th=[ 4817], | 30.00th=[ 9765], 40.00th=[ 19268], 50.00th=[ 28705], 60.00th=[ 38536], | 70.00th=[ 52167], 80.00th=[ 70779], 90.00th=[101188], 95.00th=[129500], | 99.00th=[206570], 99.50th=[244319], 99.90th=[299893], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 176, per=24.92%, avg=42.62, stdev=22.98, samples=285 iops : min= 1, max= 44, avg= 9.98, stdev= 5.79, samples=285 lat (usec) : 50=0.07%, 100=1.50%, 250=0.20%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.72%, 4=4.13%, 10=7.03%, 20=9.11%, 50=35.35% lat (msec) : 100=27.96%, 250=9.51%, 500=0.26%, 1000=0.03% cpu : usr=0.09%, sys=4.84%, ctx=6687, 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=178959: Mon Aug 24 17:19:12 2026 read: IOPS=10, BW=42.5KiB/s (43.5kB/s)(6052KiB/142358msec) clat (usec): min=37, max=318729, avg=51731.77, stdev=35280.02 lat (usec): min=37, max=318731, avg=51738.81, stdev=35282.63 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 10814], 10.00th=[ 17695], 20.00th=[ 24249], | 30.00th=[ 30802], 40.00th=[ 36963], 50.00th=[ 43779], 60.00th=[ 51643], | 70.00th=[ 60556], 80.00th=[ 74974], 90.00th=[ 96994], 95.00th=[116917], | 99.00th=[170918], 99.50th=[191890], 99.90th=[248513], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 110, per=25.98%, avg=42.60, stdev=19.39, samples=276 iops : min= 1, max= 27, avg= 9.97, stdev= 4.89, samples=276 write: IOPS=10, BW=43.8KiB/s (44.9kB/s)(6236KiB/142358msec); 0 zone resets clat (usec): min=1104, max=972840, avg=40990.10, stdev=49812.20 lat (usec): min=1105, max=972843, avg=40994.51, stdev=49812.01 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1385], 10.00th=[ 1975], 20.00th=[ 4686], | 30.00th=[ 8160], 40.00th=[ 17695], 50.00th=[ 28967], 60.00th=[ 38011], | 70.00th=[ 50070], 80.00th=[ 67634], 90.00th=[ 99091], 95.00th=[128451], | 99.00th=[196084], 99.50th=[229639], 99.90th=[341836], 99.95th=[968885], | 99.99th=[968885] bw ( KiB/s): min= 7, max= 111, per=25.38%, avg=43.39, stdev=20.95, samples=279 iops : min= 1, max= 27, avg=10.16, stdev= 5.26, samples=279 lat (usec) : 50=0.13%, 100=1.76%, 250=0.07%, 750=0.07% lat (msec) : 2=5.14%, 4=3.55%, 10=8.20%, 20=8.79%, 50=36.30% lat (msec) : 100=26.60%, 250=9.15%, 500=0.23%, 1000=0.03% cpu : usr=0.09%, sys=4.68%, ctx=6400, 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=164KiB/s (168kB/s), 41.1KiB/s-42.5KiB/s (42.1kB/s-43.5kB/s), io=23.4MiB (24.6MB), run=142358-146315msec WRITE: bw=172KiB/s (176kB/s), 42.8KiB/s-43.9KiB/s (43.8kB/s-44.0kB/s), io=24.6MiB (25.7MB), run=142358-146315msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178951: Mon Aug 24 17:19:56 2026 read: IOPS=7, BW=31.5KiB/s (32.2kB/s)(5992KiB/190438msec) clat (msec): min=5, max=1379, avg=49.89, stdev=58.01 lat (msec): min=5, max=1379, avg=49.89, stdev=58.01 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 73], 90.00th=[ 109], 95.00th=[ 148], | 99.00th=[ 226], 99.50th=[ 288], 99.90th=[ 435], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 7, max= 103, per=25.99%, avg=32.49, stdev=22.73, samples=358 iops : min= 1, max= 25, avg= 7.43, stdev= 5.71, samples=358 write: IOPS=8, BW=33.1KiB/s (33.9kB/s)(6296KiB/190438msec); 0 zone resets clat (msec): min=9, max=427, avg=73.05, stdev=53.60 lat (msec): min=9, max=427, avg=73.06, stdev=53.60 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 66], | 70.00th=[ 83], 80.00th=[ 108], 90.00th=[ 144], 95.00th=[ 182], | 99.00th=[ 271], 99.50th=[ 313], 99.90th=[ 388], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7, max= 103, per=25.49%, avg=33.39, stdev=21.14, samples=366 iops : min= 1, max= 25, avg= 7.65, stdev= 5.31, samples=366 lat (msec) : 10=1.20%, 20=12.01%, 50=44.14%, 100=25.62%, 250=15.95% lat (msec) : 500=1.04%, 2000=0.03% cpu : usr=0.06%, sys=1.71%, ctx=4702, 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=178952: Mon Aug 24 17:19:56 2026 read: IOPS=7, BW=31.2KiB/s (31.9kB/s)(5940KiB/190546msec) clat (msec): min=6, max=1284, avg=50.53, stdev=58.90 lat (msec): min=6, max=1284, avg=50.53, stdev=58.90 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 52], 80.00th=[ 71], 90.00th=[ 112], 95.00th=[ 155], | 99.00th=[ 253], 99.50th=[ 296], 99.90th=[ 380], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7, max= 118, per=25.70%, avg=32.12, stdev=23.30, samples=358 iops : min= 1, max= 29, avg= 7.33, stdev= 5.86, samples=358 write: IOPS=8, BW=33.3KiB/s (34.1kB/s)(6348KiB/190546msec); 0 zone resets clat (msec): min=11, max=512, avg=72.35, stdev=53.13 lat (msec): min=11, max=512, avg=72.35, stdev=53.13 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 56], 60.00th=[ 67], | 70.00th=[ 81], 80.00th=[ 104], 90.00th=[ 144], 95.00th=[ 182], | 99.00th=[ 266], 99.50th=[ 292], 99.90th=[ 401], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 7, max= 103, per=25.79%, avg=33.78, stdev=21.63, samples=364 iops : min= 1, max= 25, avg= 7.75, stdev= 5.43, samples=364 lat (msec) : 10=1.37%, 20=12.08%, 50=43.29%, 100=26.73%, 250=15.33% lat (msec) : 500=1.14%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=1.63%, ctx=4657, 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=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=178953: Mon Aug 24 17:19:56 2026 read: IOPS=7, BW=31.6KiB/s (32.4kB/s)(6028KiB/190668msec) clat (msec): min=6, max=444, avg=50.18, stdev=51.27 lat (msec): min=6, max=444, avg=50.19, stdev=51.27 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 49], 80.00th=[ 70], 90.00th=[ 116], 95.00th=[ 157], | 99.00th=[ 251], 99.50th=[ 309], 99.90th=[ 409], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7, max= 111, per=25.97%, avg=32.46, stdev=22.89, samples=359 iops : min= 1, max= 27, avg= 7.42, stdev= 5.74, samples=359 write: IOPS=8, BW=32.8KiB/s (33.6kB/s)(6260KiB/190668msec); 0 zone resets clat (msec): min=12, max=1322, avg=73.11, stdev=62.34 lat (msec): min=12, max=1322, avg=73.12, stdev=62.35 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 82], 80.00th=[ 106], 90.00th=[ 142], 95.00th=[ 180], | 99.00th=[ 284], 99.50th=[ 313], 99.90th=[ 514], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 103, per=25.30%, avg=33.14, stdev=21.50, samples=365 iops : min= 1, max= 25, avg= 7.59, stdev= 5.41, samples=365 lat (msec) : 10=1.14%, 20=11.72%, 50=45.02%, 100=25.20%, 250=15.63% lat (msec) : 500=1.24%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=1.63%, ctx=4801, 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=178954: Mon Aug 24 17:19:56 2026 read: IOPS=7, BW=31.6KiB/s (32.4kB/s)(6052KiB/191267msec) clat (msec): min=5, max=373, avg=49.33, stdev=47.01 lat (msec): min=5, max=373, avg=49.33, stdev=47.00 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 52], 80.00th=[ 71], 90.00th=[ 113], 95.00th=[ 144], | 99.00th=[ 234], 99.50th=[ 279], 99.90th=[ 342], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 135, per=26.05%, avg=32.56, stdev=22.95, samples=358 iops : min= 1, max= 33, avg= 7.45, stdev= 5.76, samples=358 write: IOPS=8, BW=32.6KiB/s (33.4kB/s)(6236KiB/191267msec); 0 zone resets clat (msec): min=13, max=1317, avg=74.44, stdev=62.70 lat (msec): min=13, max=1317, avg=74.45, stdev=62.70 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 67], | 70.00th=[ 84], 80.00th=[ 110], 90.00th=[ 148], 95.00th=[ 188], | 99.00th=[ 268], 99.50th=[ 317], 99.90th=[ 409], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 104, per=24.93%, avg=32.66, stdev=21.37, samples=368 iops : min= 1, max= 26, avg= 7.46, stdev= 5.36, samples=368 lat (msec) : 10=1.24%, 20=12.37%, 50=43.00%, 100=25.81%, 250=16.60% lat (msec) : 500=0.94%, 2000=0.03% cpu : usr=0.07%, sys=1.61%, ctx=4762, 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=126KiB/s (129kB/s), 31.2KiB/s-31.6KiB/s (31.9kB/s-32.4kB/s), io=23.4MiB (24.6MB), run=190438-191267msec WRITE: bw=131KiB/s (135kB/s), 32.6KiB/s-33.3KiB/s (33.4kB/s-34.1kB/s), io=24.6MiB (25.7MB), run=190438-191267msec 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=179002: Mon Aug 24 17:20:47 2026 read: IOPS=10, BW=171KiB/s (175kB/s)(5920KiB/34575msec) clat (usec): min=40, max=172334, avg=49224.01, stdev=35516.14 lat (usec): min=40, max=172896, avg=49227.31, stdev=35522.36 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 21365], | 30.00th=[ 29230], 40.00th=[ 35914], 50.00th=[ 43254], 60.00th=[ 52167], | 70.00th=[ 63177], 80.00th=[ 78119], 90.00th=[ 94897], 95.00th=[115868], | 99.00th=[162530], 99.50th=[168821], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 31, max= 509, per=24.96%, avg=172.00, stdev=72.03, samples=67 iops : min= 1, max= 31, avg= 9.97, stdev= 4.54, samples=67 write: IOPS=11, BW=184KiB/s (189kB/s)(6368KiB/34575msec); 0 zone resets clat (usec): min=1618, max=247884, avg=40905.72, stdev=39508.83 lat (usec): min=1620, max=247886, avg=40918.16, stdev=39500.68 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2999], 10.00th=[ 4178], 20.00th=[ 7701], | 30.00th=[ 12911], 40.00th=[ 21365], 50.00th=[ 30802], 60.00th=[ 37487], | 70.00th=[ 50070], 80.00th=[ 70779], 90.00th=[ 91751], 95.00th=[116917], | 99.00th=[185598], 99.50th=[229639], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 446, per=25.29%, avg=183.35, stdev=73.83, samples=68 iops : min= 1, max= 27, avg=10.69, stdev= 4.70, samples=68 lat (usec) : 50=1.04%, 100=4.82%, 250=0.13%, 500=0.13%, 750=0.52% lat (msec) : 2=1.17%, 4=3.65%, 10=8.33%, 20=8.85%, 50=35.03% lat (msec) : 100=28.52%, 250=7.81% cpu : usr=0.07%, sys=5.67%, ctx=1653, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179003: Mon Aug 24 17:20:47 2026 read: IOPS=10, BW=165KiB/s (169kB/s)(5744KiB/34722msec) clat (usec): min=45, max=272274, avg=49939.11, stdev=35944.08 lat (usec): min=46, max=272275, avg=49940.34, stdev=35944.16 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 74], 10.00th=[ 13173], 20.00th=[ 23725], | 30.00th=[ 32113], 40.00th=[ 38011], 50.00th=[ 45351], 60.00th=[ 50070], | 70.00th=[ 58983], 80.00th=[ 70779], 90.00th=[ 92799], 95.00th=[111674], | 99.00th=[183501], 99.50th=[221250], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 348, per=23.70%, avg=163.31, stdev=69.50, samples=68 iops : min= 1, max= 21, avg= 9.43, stdev= 4.41, samples=68 write: IOPS=11, BW=188KiB/s (193kB/s)(6544KiB/34722msec); 0 zone resets clat (usec): min=1702, max=233485, avg=40557.35, stdev=37206.92 lat (usec): min=1704, max=233486, avg=40559.54, stdev=37206.90 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2802], 10.00th=[ 4424], 20.00th=[ 7635], | 30.00th=[ 12911], 40.00th=[ 20317], 50.00th=[ 30278], 60.00th=[ 39060], | 70.00th=[ 53216], 80.00th=[ 71828], 90.00th=[ 95945], 95.00th=[117965], | 99.00th=[141558], 99.50th=[158335], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 541, per=25.63%, avg=185.81, stdev=87.05, samples=68 iops : min= 1, max= 33, avg=10.87, stdev= 5.41, samples=68 lat (usec) : 50=0.39%, 100=2.60%, 250=0.52%, 500=0.39%, 750=0.13% lat (msec) : 2=1.30%, 4=4.04%, 10=7.94%, 20=10.55%, 50=35.55% lat (msec) : 100=28.65%, 250=7.81%, 500=0.13% cpu : usr=0.07%, sys=5.67%, ctx=1674, 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=179004: Mon Aug 24 17:20:47 2026 read: IOPS=11, BW=182KiB/s (187kB/s)(6256KiB/34321msec) clat (usec): min=37, max=268939, avg=50537.04, stdev=32708.52 lat (usec): min=37, max=268941, avg=50540.04, stdev=32706.04 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 68], 10.00th=[ 130], 20.00th=[ 27919], | 30.00th=[ 34866], 40.00th=[ 40633], 50.00th=[ 48497], 60.00th=[ 56361], | 70.00th=[ 62653], 80.00th=[ 70779], 90.00th=[ 88605], 95.00th=[ 99091], | 99.00th=[166724], 99.50th=[181404], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 62, max= 316, per=26.54%, avg=182.87, stdev=60.53, samples=67 iops : min= 3, max= 19, avg=10.66, stdev= 3.79, samples=67 write: IOPS=10, BW=176KiB/s (180kB/s)(6032KiB/34321msec); 0 zone resets clat (usec): min=1648, max=187312, avg=38037.67, stdev=36870.02 lat (usec): min=1650, max=187313, avg=38040.71, stdev=36870.17 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 2376], 10.00th=[ 3458], 20.00th=[ 7701], | 30.00th=[ 11600], 40.00th=[ 20317], 50.00th=[ 26346], 60.00th=[ 34341], | 70.00th=[ 45351], 80.00th=[ 63701], 90.00th=[ 95945], 95.00th=[119014], | 99.00th=[166724], 99.50th=[179307], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 62, max= 446, per=23.92%, avg=173.40, stdev=79.58, samples=67 iops : min= 3, max= 27, avg=10.06, stdev= 5.05, samples=67 lat (usec) : 50=0.39%, 100=4.69%, 250=0.39% lat (msec) : 2=1.69%, 4=4.30%, 10=6.90%, 20=8.33%, 50=35.81% lat (msec) : 100=30.60%, 250=6.77%, 500=0.13% cpu : usr=0.08%, sys=5.61%, ctx=1744, 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=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=179005: Mon Aug 24 17:20:47 2026 read: IOPS=11, BW=179KiB/s (184kB/s)(6032KiB/33622msec) clat (usec): min=32, max=193248, avg=48251.86, stdev=34478.91 lat (usec): min=33, max=193249, avg=48253.06, stdev=34478.79 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 67], 10.00th=[ 81], 20.00th=[ 21890], | 30.00th=[ 30802], 40.00th=[ 38536], 50.00th=[ 44303], 60.00th=[ 51119], | 70.00th=[ 60556], 80.00th=[ 71828], 90.00th=[ 93848], 95.00th=[109577], | 99.00th=[149947], 99.50th=[183501], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 62, max= 443, per=25.82%, avg=177.92, stdev=70.27, samples=66 iops : min= 3, max= 27, avg=10.33, stdev= 4.44, samples=66 write: IOPS=11, BW=186KiB/s (191kB/s)(6256KiB/33622msec); 0 zone resets clat (usec): min=1469, max=245988, avg=38971.49, stdev=39401.85 lat (usec): min=1470, max=245991, avg=38973.83, stdev=39401.82 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2147], 10.00th=[ 3851], 20.00th=[ 6259], | 30.00th=[ 10028], 40.00th=[ 15926], 50.00th=[ 24249], 60.00th=[ 36963], | 70.00th=[ 50070], 80.00th=[ 67634], 90.00th=[100140], 95.00th=[114820], | 99.00th=[160433], 99.50th=[225444], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 31, max= 378, per=25.66%, avg=186.02, stdev=76.39, samples=66 iops : min= 1, max= 23, avg=10.85, stdev= 4.82, samples=66 lat (usec) : 50=0.39%, 100=5.60%, 250=0.39%, 500=0.26%, 750=0.13% lat (msec) : 2=2.08%, 4=3.65%, 10=10.03%, 20=9.24%, 50=32.68% lat (msec) : 100=26.56%, 250=8.98% cpu : usr=0.10%, sys=5.86%, ctx=1660, 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=690KiB/s (706kB/s), 165KiB/s-182KiB/s (169kB/s-187kB/s), io=23.4MiB (24.5MB), run=33622-34722msec WRITE: bw=726KiB/s (743kB/s), 176KiB/s-188KiB/s (180kB/s-193kB/s), io=24.6MiB (25.8MB), run=33622-34722msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179007: Mon Aug 24 17:20:58 2026 read: IOPS=8, BW=129KiB/s (132kB/s)(5920KiB/45772msec) clat (msec): min=7, max=283, avg=49.53, stdev=43.99 lat (msec): min=7, max=283, avg=49.53, stdev=43.99 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 54], 80.00th=[ 70], 90.00th=[ 103], 95.00th=[ 150], | 99.00th=[ 230], 99.50th=[ 255], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 350, per=25.23%, avg=131.93, stdev=83.78, samples=87 iops : min= 1, max= 21, avg= 7.45, stdev= 5.26, samples=87 write: IOPS=8, BW=139KiB/s (142kB/s)(6368KiB/45772msec); 0 zone resets clat (msec): min=15, max=344, avg=68.83, stdev=47.68 lat (msec): min=15, max=344, avg=68.84, stdev=47.68 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 38], 40.00th=[ 43], 50.00th=[ 52], 60.00th=[ 65], | 70.00th=[ 84], 80.00th=[ 107], 90.00th=[ 130], 95.00th=[ 155], | 99.00th=[ 275], 99.50th=[ 300], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 30, max= 384, per=25.42%, avg=139.81, stdev=87.25, samples=89 iops : min= 1, max= 24, avg= 7.93, stdev= 5.53, samples=89 lat (msec) : 10=0.78%, 20=10.94%, 50=45.70%, 100=25.78%, 250=16.02% lat (msec) : 500=0.78% cpu : usr=0.06%, sys=1.88%, ctx=1181, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179008: Mon Aug 24 17:20:58 2026 read: IOPS=7, BW=125KiB/s (128kB/s)(5744KiB/45784msec) clat (msec): min=6, max=292, avg=51.64, stdev=47.82 lat (msec): min=6, max=292, avg=51.64, stdev=47.82 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 43], | 70.00th=[ 51], 80.00th=[ 81], 90.00th=[ 122], 95.00th=[ 159], | 99.00th=[ 241], 99.50th=[ 262], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 414, per=24.00%, avg=125.52, stdev=82.68, samples=89 iops : min= 1, max= 25, avg= 7.03, stdev= 5.21, samples=89 write: IOPS=8, BW=143KiB/s (146kB/s)(6544KiB/45784msec); 0 zone resets clat (msec): min=17, max=280, avg=66.39, stdev=43.79 lat (msec): min=17, max=280, avg=66.39, stdev=43.79 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 63], | 70.00th=[ 77], 80.00th=[ 99], 90.00th=[ 126], 95.00th=[ 150], | 99.00th=[ 222], 99.50th=[ 271], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 384, per=26.00%, avg=142.98, stdev=85.74, samples=89 iops : min= 1, max= 24, avg= 8.13, stdev= 5.42, samples=89 lat (msec) : 10=1.04%, 20=11.85%, 50=45.83%, 100=24.61%, 250=15.89% lat (msec) : 500=0.78% cpu : usr=0.07%, sys=1.82%, ctx=1251, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179009: Mon Aug 24 17:20:58 2026 read: IOPS=8, BW=140KiB/s (143kB/s)(6256KiB/44812msec) clat (msec): min=5, max=254, avg=45.00, stdev=36.23 lat (msec): min=5, max=254, avg=45.00, stdev=36.23 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 53], 80.00th=[ 71], 90.00th=[ 93], 95.00th=[ 123], | 99.00th=[ 169], 99.50th=[ 224], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 30, max= 477, per=27.31%, avg=142.85, stdev=102.37, samples=86 iops : min= 1, max= 29, avg= 8.13, stdev= 6.49, samples=86 write: IOPS=8, BW=135KiB/s (138kB/s)(6032KiB/44812msec); 0 zone resets clat (msec): min=15, max=364, avg=72.04, stdev=51.74 lat (msec): min=15, max=364, avg=72.05, stdev=51.74 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 64], | 70.00th=[ 82], 80.00th=[ 110], 90.00th=[ 142], 95.00th=[ 169], | 99.00th=[ 268], 99.50th=[ 313], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 30, max= 383, per=24.40%, avg=134.21, stdev=78.50, samples=87 iops : min= 1, max= 23, avg= 7.59, stdev= 4.95, samples=87 lat (msec) : 10=0.78%, 20=13.02%, 50=43.75%, 100=26.43%, 250=15.36% lat (msec) : 500=0.65% cpu : usr=0.04%, sys=1.86%, ctx=1206, 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=179010: Mon Aug 24 17:20:58 2026 read: IOPS=8, BW=134KiB/s (137kB/s)(6032KiB/44955msec) clat (msec): min=7, max=263, avg=47.63, stdev=42.60 lat (msec): min=7, max=263, avg=47.64, stdev=42.60 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 67], 90.00th=[ 104], 95.00th=[ 144], | 99.00th=[ 226], 99.50th=[ 249], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 31, max= 414, per=25.91%, avg=135.51, stdev=88.34, samples=86 iops : min= 1, max= 25, avg= 7.65, stdev= 5.59, samples=86 write: IOPS=8, BW=139KiB/s (143kB/s)(6256KiB/44955msec); 0 zone resets clat (msec): min=13, max=268, avg=68.86, stdev=45.90 lat (msec): min=13, max=268, avg=68.87, stdev=45.90 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 82], 80.00th=[ 102], 90.00th=[ 132], 95.00th=[ 165], | 99.00th=[ 234], 99.50th=[ 253], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 413, per=25.06%, avg=137.82, stdev=82.49, samples=88 iops : min= 1, max= 25, avg= 7.81, stdev= 5.23, samples=88 lat (msec) : 10=0.78%, 20=12.24%, 50=44.40%, 100=26.95%, 250=15.23% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.85%, ctx=1192, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=523KiB/s (536kB/s), 125KiB/s-140KiB/s (128kB/s-143kB/s), io=23.4MiB (24.5MB), run=44812-45784msec WRITE: bw=550KiB/s (564kB/s), 135KiB/s-143KiB/s (138kB/s-146kB/s), io=24.6MiB (25.8MB), run=44812-45784msec 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=179027: Mon Aug 24 17:21:17 2026 read: IOPS=1, BW=2011KiB/s (2059kB/s)(7168KiB/3564msec) clat (usec): min=650, max=341350, avg=204980.37, stdev=126864.24 lat (usec): min=652, max=341352, avg=204981.98, stdev=126864.20 clat percentiles (usec): | 1.00th=[ 652], 5.00th=[ 652], 10.00th=[ 652], 20.00th=[ 61080], | 30.00th=[210764], 40.00th=[210764], 50.00th=[256902], 60.00th=[261096], | 70.00th=[261096], 80.00th=[304088], 90.00th=[341836], 95.00th=[341836], | 99.00th=[341836], 99.50th=[341836], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 1954, max= 4063, per=92.68%, avg=3291.00, stdev=1162.49, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1437KiB/s (1471kB/s)(5120KiB/3564msec); 0 zone resets clat (msec): min=231, max=585, avg=382.10, stdev=134.50 lat (msec): min=231, max=585, avg=382.30, stdev=134.53 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 232], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1768, max= 4039, per=52.00%, avg=2585.67, stdev=1261.91, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=16.67%, 500=58.33%, 750=8.33% cpu : usr=0.03%, sys=12.46%, ctx=163, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179028: Mon Aug 24 17:21:17 2026 read: IOPS=0, BW=418KiB/s (428kB/s)(2048KiB/4904msec) clat (usec): min=570, max=303588, avg=152079.64, stdev=214265.65 lat (usec): min=572, max=303590, avg=152081.57, stdev=214266.54 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[ 570], 50.00th=[ 570], 60.00th=[304088], | 70.00th=[304088], 80.00th=[304088], 90.00th=[304088], 95.00th=[304088], | 99.00th=[304088], 99.50th=[304088], 99.90th=[304088], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 1935, max= 1950, per=54.70%, avg=1942.50, stdev=10.61, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2088KiB/s (2138kB/s)(10.0MiB/4904msec); 0 zone resets clat (msec): min=188, max=1171, avg=448.34, stdev=302.43 lat (msec): min=188, max=1171, avg=448.60, stdev=302.49 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 197], | 30.00th=[ 241], 40.00th=[ 271], 50.00th=[ 326], 60.00th=[ 359], | 70.00th=[ 493], 80.00th=[ 558], 90.00th=[ 693], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 1928, max= 4087, per=60.06%, avg=2986.17, stdev=1130.95, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=41.67%, 750=16.67%, 2000=8.33% cpu : usr=0.10%, sys=10.69%, ctx=117, 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=179029: Mon Aug 24 17:21:17 2026 read: IOPS=1, BW=1066KiB/s (1091kB/s)(6144KiB/5766msec) clat (usec): min=1278, max=2949.6k, avg=549088.38, stdev=1180122.83 lat (usec): min=1279, max=2949.6k, avg=549089.84, stdev=1180122.86 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1287], 10.00th=[ 1287], | 20.00th=[ 1582], 30.00th=[ 1582], 40.00th=[ 5145], | 50.00th=[ 5145], 60.00th=[ 80217], 70.00th=[ 256902], | 80.00th=[ 256902], 90.00th=[2936013], 95.00th=[2936013], | 99.00th=[2936013], 99.50th=[2936013], 99.90th=[2936013], | 99.95th=[2936013], 99.99th=[2936013] bw ( KiB/s): min= 4063, max= 6144, per=100.00%, avg=5103.50, stdev=1471.49, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1066KiB/s (1091kB/s)(6144KiB/5766msec); 0 zone resets clat (msec): min=150, max=910, avg=356.55, stdev=295.07 lat (msec): min=150, max=910, avg=356.77, stdev=295.11 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 239], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1768, max= 2048, per=38.48%, avg=1913.20, stdev=103.11, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 2=16.67%, 10=8.33%, 100=8.33%, 250=33.33%, 500=16.67% lat (msec) : 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.61%, ctx=314, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179030: Mon Aug 24 17:21:17 2026 read: IOPS=1, BW=1090KiB/s (1116kB/s)(5120KiB/4697msec) clat (usec): min=458, max=543177, avg=250039.61, stdev=193444.59 lat (usec): min=459, max=543178, avg=250041.00, stdev=193444.60 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 461], 10.00th=[ 461], 20.00th=[ 461], | 30.00th=[214959], 40.00th=[214959], 50.00th=[233833], 60.00th=[233833], | 70.00th=[256902], 80.00th=[256902], 90.00th=[541066], 95.00th=[541066], | 99.00th=[541066], 99.50th=[541066], 99.90th=[541066], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 1950, max= 5907, per=100.00%, avg=3928.50, stdev=2798.02, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1526KiB/s (1563kB/s)(7168KiB/4697msec); 0 zone resets clat (msec): min=319, max=689, avg=453.34, stdev=127.94 lat (msec): min=319, max=689, avg=453.44, stdev=127.94 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 330], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 430], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 531], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1374, max= 3574, per=44.15%, avg=2195.00, stdev=818.61, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33% lat (msec) : 250=16.67%, 500=50.00%, 750=25.00% cpu : usr=0.00%, sys=10.52%, ctx=163, 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=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=3552KiB/s (3637kB/s), 418KiB/s-2011KiB/s (428kB/s-2059kB/s), io=20.0MiB (20.0MB), run=3564-5766msec WRITE: bw=4973KiB/s (5092kB/s), 1066KiB/s-2088KiB/s (1091kB/s-2138kB/s), io=28.0MiB (29.4MB), run=3564-5766msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179022: Mon Aug 24 17:21:17 2026 read: IOPS=1, BW=1956KiB/s (2003kB/s)(7168KiB/3664msec) clat (msec): min=124, max=274, avg=185.19, stdev=55.26 lat (msec): min=124, max=274, avg=185.19, stdev=55.26 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 134], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 174], 60.00th=[ 184], | 70.00th=[ 184], 80.00th=[ 245], 90.00th=[ 275], 95.00th=[ 275], | 99.00th=[ 275], 99.50th=[ 275], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 2019, max= 4219, per=100.00%, avg=3364.67, stdev=1179.43, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1397KiB/s (1431kB/s)(5120KiB/3664msec); 0 zone resets clat (msec): min=150, max=1337, avg=463.39, stdev=493.83 lat (msec): min=150, max=1337, avg=463.90, stdev=493.85 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 1768, max= 2019, per=44.81%, avg=1916.25, stdev=106.16, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=66.67%, 500=25.00%, 2000=8.33% cpu : usr=0.03%, sys=4.18%, ctx=96, 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=179023: Mon Aug 24 17:21:17 2026 read: IOPS=0, BW=377KiB/s (386kB/s)(2048KiB/5436msec) clat (msec): min=125, max=142, avg=134.32, stdev=12.16 lat (msec): min=125, max=142, avg=134.32, stdev=12.16 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 126], 10.00th=[ 126], 20.00th=[ 126], | 30.00th=[ 126], 40.00th=[ 126], 50.00th=[ 126], 60.00th=[ 144], | 70.00th=[ 144], 80.00th=[ 144], 90.00th=[ 144], 95.00th=[ 144], | 99.00th=[ 144], 99.50th=[ 144], 99.90th=[ 144], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 1477, max= 1939, per=55.93%, avg=1708.00, stdev=326.68, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1884KiB/s (1929kB/s)(10.0MiB/5436msec); 0 zone resets clat (msec): min=217, max=1396, avg=494.02, stdev=346.96 lat (msec): min=217, max=1396, avg=494.37, stdev=346.95 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 222], | 30.00th=[ 284], 40.00th=[ 330], 50.00th=[ 380], 60.00th=[ 409], | 70.00th=[ 531], 80.00th=[ 535], 90.00th=[ 642], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 1928, max= 4087, per=58.64%, avg=2507.57, stdev=906.06, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=33.33%, 500=33.33%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=5.72%, ctx=127, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179024: Mon Aug 24 17:21:17 2026 read: IOPS=0, BW=916KiB/s (938kB/s)(6144KiB/6704msec) clat (msec): min=100, max=3424, avg=716.78, stdev=1327.66 lat (msec): min=100, max=3424, avg=716.78, stdev=1327.66 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 203], | 70.00th=[ 251], 80.00th=[ 251], 90.00th=[ 3440], 95.00th=[ 3440], | 99.00th=[ 3440], 99.50th=[ 3440], 99.90th=[ 3440], 99.95th=[ 3440], | 99.99th=[ 3440] bw ( KiB/s): min= 2019, max= 3537, per=82.99%, avg=2534.67, stdev=868.17, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=0, BW=916KiB/s (938kB/s)(6144KiB/6704msec); 0 zone resets clat (msec): min=163, max=755, avg=390.80, stdev=247.99 lat (msec): min=164, max=755, avg=390.92, stdev=247.98 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 321], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 1768, max= 3065, per=51.94%, avg=2220.75, stdev=575.75, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=2.55%, ctx=93, 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=179025: Mon Aug 24 17:21:17 2026 read: IOPS=1, BW=1177KiB/s (1206kB/s)(5120KiB/4349msec) clat (msec): min=128, max=761, avg=385.32, stdev=340.20 lat (msec): min=128, max=761, avg=385.32, stdev=340.20 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 129], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 144], 60.00th=[ 144], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 1950, max= 4039, per=87.54%, avg=2673.33, stdev=1183.40, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1648KiB/s (1688kB/s)(7168KiB/4349msec); 0 zone resets clat (msec): min=123, max=766, avg=330.47, stdev=213.74 lat (msec): min=123, max=766, avg=330.58, stdev=213.74 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 180], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 305], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 372], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1521, max= 3537, per=52.18%, avg=2231.25, stdev=891.97, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=25.00%, 1000=25.00% cpu : usr=0.00%, sys=4.21%, ctx=86, 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=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=3055KiB/s (3128kB/s), 377KiB/s-1956KiB/s (386kB/s-2003kB/s), io=20.0MiB (20.0MB), run=3664-6704msec WRITE: bw=4277KiB/s (4379kB/s), 916KiB/s-1884KiB/s (938kB/s-1929kB/s), io=28.0MiB (29.4MB), run=3664-6704msec 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=179037: Mon Aug 24 17:21:33 2026 read: IOPS=1, BW=4690KiB/s (4803kB/s)(12.0MiB/2620msec) clat (msec): min=636, max=1015, avg=855.07, stdev=196.16 lat (msec): min=636, max=1015, avg=855.07, stdev=196.16 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 8094, max= 8126, per=100.00%, avg=8110.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.54%, ctx=53, 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=179039: Mon Aug 24 17:21:33 2026 read: IOPS=0, BW=1678KiB/s (1718kB/s)(4096KiB/2441msec) clat (nsec): min=425321k, max=425321k, avg=425320732.00, stdev= 0.00 lat (nsec): min=425324k, max=425324k, avg=425323830.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 426], 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= 7599, max= 7599, per=100.00%, avg=7599.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3356KiB/s (3437kB/s)(8192KiB/2441msec); 0 zone resets clat (msec): min=657, max=1323, avg=990.75, stdev=471.17 lat (msec): min=657, max=1325, avg=991.53, stdev=471.86 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 659], 50.00th=[ 659], 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=75.33%, avg=8143.00, 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=5.08%, ctx=55, 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=179040: Mon Aug 24 17:21:33 2026 write: IOPS=0, BW=4054KiB/s (4151kB/s)(12.0MiB/3031msec); 0 zone resets clat (msec): min=315, max=1461, avg=985.82, stdev=597.29 lat (msec): min=318, max=1462, avg=987.12, stdev=596.19 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 7846, max= 8143, per=73.95%, avg=7994.50, stdev=210.01, 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=5.21%, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=179041: Mon Aug 24 17:21:33 2026 write: IOPS=1, BW=5242KiB/s (5368kB/s)(12.0MiB/2344msec); 0 zone resets clat (msec): min=341, max=1581, avg=764.76, stdev=707.68 lat (msec): min=343, max=1582, avg=765.64, stdev=707.32 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 5809, max= 8126, per=64.45%, avg=6967.50, stdev=1638.37, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.04%, sys=5.34%, 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=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=6253KiB/s (6404kB/s), 1678KiB/s-4690KiB/s (1718kB/s-4803kB/s), io=16.0MiB (16.8MB), run=2441-2620msec WRITE: bw=10.6MiB/s (11.1MB/s), 3356KiB/s-5242KiB/s (3437kB/s-5368kB/s), io=32.0MiB (33.6MB), run=2344-3031msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179042: Mon Aug 24 17:21:33 2026 read: IOPS=1, BW=5899KiB/s (6041kB/s)(12.0MiB/2083msec) clat (msec): min=439, max=812, avg=678.63, stdev=207.15 lat (msec): min=439, max=812, avg=678.63, stdev=207.15 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7772, max= 8143, per=100.00%, avg=7957.50, stdev=262.34, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=15.03%, ctx=258, 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=179043: Mon Aug 24 17:21:33 2026 read: IOPS=0, BW=1471KiB/s (1507kB/s)(4096KiB/2784msec) clat (nsec): min=527060k, max=527060k, avg=527059730.00, stdev= 0.00 lat (nsec): min=527062k, max=527062k, avg=527062187.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 6470, max= 6470, per=100.00%, avg=6470.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2943KiB/s (3013kB/s)(8192KiB/2784msec); 0 zone resets clat (msec): min=486, max=1695, avg=1091.23, stdev=855.25 lat (msec): min=487, max=1696, avg=1091.76, stdev=855.16 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 1703], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8031, max= 8031, per=77.84%, avg=8031.00, 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=4.20%, ctx=108, 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=179044: Mon Aug 24 17:21:33 2026 write: IOPS=0, BW=3869KiB/s (3962kB/s)(12.0MiB/3176msec); 0 zone resets clat (msec): min=220, max=1469, avg=1024.15, stdev=697.19 lat (msec): min=221, max=1469, avg=1024.62, stdev=697.21 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8143, max= 8143, per=78.93%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.03%, sys=2.90%, ctx=41, 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=179045: Mon Aug 24 17:21:33 2026 write: IOPS=1, BW=4575KiB/s (4685kB/s)(12.0MiB/2686msec); 0 zone resets clat (msec): min=620, max=1283, avg=857.89, stdev=369.12 lat (msec): min=620, max=1283, avg=858.49, stdev=369.01 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8078, max= 8126, per=78.53%, avg=8102.00, stdev=33.94, 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=4.02%, ctx=30, 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=5885KiB/s (6026kB/s), 1471KiB/s-5899KiB/s (1507kB/s-6041kB/s), io=16.0MiB (16.8MB), run=2083-2784msec WRITE: bw=10.1MiB/s (10.6MB/s), 2943KiB/s-4575KiB/s (3013kB/s-4685kB/s), io=32.0MiB (33.6MB), run=2686-3176msec