== sanity test 398b: DIO and buffer IO race ============== 05:05:48 (1787130348) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.79821 s, 6.5 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=179796: Wed Aug 19 05:08:30 2026 read: IOPS=10, BW=43.3KiB/s (44.3kB/s)(5992KiB/138524msec) clat (usec): min=39, max=741971, avg=52139.42, stdev=40103.39 lat (usec): min=40, max=741972, avg=52145.57, stdev=40104.23 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 13829], 10.00th=[ 19530], 20.00th=[ 26084], | 30.00th=[ 32113], 40.00th=[ 38011], 50.00th=[ 43779], 60.00th=[ 51643], | 70.00th=[ 60031], 80.00th=[ 71828], 90.00th=[ 90702], 95.00th=[113771], | 99.00th=[187696], 99.50th=[235930], 99.90th=[417334], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 7, max= 95, per=24.85%, avg=42.74, stdev=16.39, samples=273 iops : min= 1, max= 23, avg=10.01, stdev= 4.12, samples=273 write: IOPS=11, BW=45.5KiB/s (46.5kB/s)(6296KiB/138524msec); 0 zone resets clat (usec): min=1097, max=280375, avg=38049.53, stdev=37209.15 lat (usec): min=1099, max=280376, avg=38060.52, stdev=37213.06 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1516], 10.00th=[ 2704], 20.00th=[ 5276], | 30.00th=[ 9765], 40.00th=[ 18220], 50.00th=[ 27395], 60.00th=[ 36963], | 70.00th=[ 50594], 80.00th=[ 67634], 90.00th=[ 90702], 95.00th=[112722], | 99.00th=[152044], 99.50th=[175113], 99.90th=[238027], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 116, per=24.90%, avg=45.06, stdev=21.74, samples=272 iops : min= 1, max= 29, avg=10.60, stdev= 5.48, samples=272 lat (usec) : 50=0.16%, 100=1.56%, 250=0.10% lat (msec) : 2=3.81%, 4=3.97%, 10=7.85%, 20=8.95%, 50=37.37% lat (msec) : 100=28.87%, 250=7.19%, 500=0.13%, 750=0.03% cpu : usr=0.09%, sys=5.05%, ctx=6676, 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=179797: Wed Aug 19 05:08:30 2026 read: IOPS=10, BW=43.7KiB/s (44.7kB/s)(5940KiB/136073msec) clat (usec): min=40, max=281434, avg=50046.54, stdev=32155.26 lat (usec): min=40, max=281435, avg=50049.30, stdev=32155.99 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 14484], 10.00th=[ 19792], 20.00th=[ 26084], | 30.00th=[ 32113], 40.00th=[ 38011], 50.00th=[ 43254], 60.00th=[ 51119], | 70.00th=[ 58459], 80.00th=[ 69731], 90.00th=[ 86508], 95.00th=[107480], | 99.00th=[160433], 99.50th=[202376], 99.90th=[278922], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 6, max= 96, per=25.25%, avg=43.44, stdev=17.68, samples=266 iops : min= 1, max= 24, avg=10.20, stdev= 4.45, samples=266 write: IOPS=11, BW=46.7KiB/s (47.8kB/s)(6348KiB/136073msec); 0 zone resets clat (usec): min=1154, max=720296, avg=38613.68, stdev=41630.55 lat (usec): min=1155, max=720297, avg=38618.97, stdev=41630.96 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1450], 10.00th=[ 2343], 20.00th=[ 5342], | 30.00th=[ 9241], 40.00th=[ 18220], 50.00th=[ 27919], 60.00th=[ 38011], | 70.00th=[ 50594], 80.00th=[ 65274], 90.00th=[ 88605], 95.00th=[111674], | 99.00th=[164627], 99.50th=[191890], 99.90th=[261096], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 6, max= 143, per=25.63%, avg=46.39, stdev=20.88, samples=266 iops : min= 1, max= 35, avg=10.93, stdev= 5.22, samples=266 lat (usec) : 50=0.07%, 100=1.07%, 250=0.20%, 500=0.07%, 1000=0.03% lat (msec) : 2=4.65%, 4=3.65%, 10=7.91%, 20=9.08%, 50=37.89% lat (msec) : 100=28.52%, 250=6.71%, 500=0.13%, 750=0.03% cpu : usr=0.08%, sys=5.11%, ctx=6692, 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=179799: Wed Aug 19 05:08:30 2026 read: IOPS=10, BW=43.9KiB/s (44.9kB/s)(6028KiB/137462msec) clat (usec): min=48, max=314878, avg=49848.49, stdev=33220.52 lat (usec): min=49, max=314880, avg=49853.02, stdev=33221.13 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 14746], 10.00th=[ 20579], 20.00th=[ 26346], | 30.00th=[ 31065], 40.00th=[ 36963], 50.00th=[ 43254], 60.00th=[ 50070], | 70.00th=[ 57934], 80.00th=[ 68682], 90.00th=[ 87557], 95.00th=[104334], | 99.00th=[162530], 99.50th=[240124], 99.90th=[304088], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 112, per=25.41%, avg=43.71, stdev=18.11, samples=269 iops : min= 1, max= 28, avg=10.26, stdev= 4.54, samples=269 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(6260KiB/137462msec); 0 zone resets clat (usec): min=1144, max=799784, avg=39567.45, stdev=44900.78 lat (usec): min=1146, max=799786, avg=39576.33, stdev=44908.22 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1532], 10.00th=[ 2638], 20.00th=[ 5407], | 30.00th=[ 9241], 40.00th=[ 19268], 50.00th=[ 28967], 60.00th=[ 37487], | 70.00th=[ 48497], 80.00th=[ 65799], 90.00th=[ 91751], 95.00th=[121111], | 99.00th=[175113], 99.50th=[227541], 99.90th=[316670], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 119, per=25.37%, avg=45.91, stdev=22.31, samples=266 iops : min= 1, max= 29, avg=10.82, stdev= 5.61, samples=266 lat (usec) : 50=0.07%, 100=1.14%, 250=0.23%, 500=0.03% lat (msec) : 2=3.74%, 4=4.10%, 10=7.98%, 20=8.24%, 50=40.01% lat (msec) : 100=27.41%, 250=6.67%, 500=0.36%, 1000=0.03% cpu : usr=0.09%, sys=5.11%, ctx=6706, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179801: Wed Aug 19 05:08:30 2026 read: IOPS=10, BW=43.6KiB/s (44.6kB/s)(6052KiB/138825msec) clat (usec): min=39, max=730237, avg=50434.33, stdev=37110.73 lat (usec): min=40, max=730239, avg=50437.20, stdev=37110.64 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 12911], 10.00th=[ 18220], 20.00th=[ 25297], | 30.00th=[ 30802], 40.00th=[ 37487], 50.00th=[ 43779], 60.00th=[ 51643], | 70.00th=[ 59507], 80.00th=[ 69731], 90.00th=[ 89654], 95.00th=[111674], | 99.00th=[158335], 99.50th=[187696], 99.90th=[333448], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 6, max= 103, per=25.03%, avg=43.06, stdev=18.14, samples=274 iops : min= 1, max= 25, avg=10.09, stdev= 4.55, samples=274 write: IOPS=11, BW=44.9KiB/s (45.0kB/s)(6236KiB/138825msec); 0 zone resets clat (usec): min=1145, max=370605, avg=39796.45, stdev=41281.49 lat (usec): min=1147, max=370607, avg=39802.42, stdev=41279.62 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1614], 10.00th=[ 2606], 20.00th=[ 5342], | 30.00th=[ 10814], 40.00th=[ 19268], 50.00th=[ 27919], 60.00th=[ 38011], | 70.00th=[ 49546], 80.00th=[ 68682], 90.00th=[ 94897], 95.00th=[116917], | 99.00th=[183501], 99.50th=[219153], 99.90th=[312476], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 7, max= 133, per=24.72%, avg=44.75, stdev=21.73, samples=271 iops : min= 1, max= 33, avg=10.54, stdev= 5.48, samples=271 lat (usec) : 50=0.20%, 100=1.30%, 250=0.20%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=3.61%, 4=4.17%, 10=6.87%, 20=10.29%, 50=37.73% lat (msec) : 100=27.67%, 250=7.58%, 500=0.23%, 750=0.03% cpu : usr=0.08%, sys=5.04%, ctx=6812, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=173KiB/s (177kB/s), 43.3KiB/s-43.9KiB/s (44.3kB/s-44.9kB/s), io=23.4MiB (24.6MB), run=136073-138825msec WRITE: bw=181KiB/s (185kB/s), 44.9KiB/s-46.7KiB/s (45.0kB/s-47.8kB/s), io=24.6MiB (25.7MB), run=136073-138825msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179798: Wed Aug 19 05:09:09 2026 read: IOPS=8, BW=33.7KiB/s (34.5kB/s)(5992KiB/178036msec) clat (msec): min=6, max=777, avg=45.55, stdev=47.53 lat (msec): min=6, max=777, avg=45.55, stdev=47.53 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 48], 80.00th=[ 67], 90.00th=[ 103], 95.00th=[ 136], | 99.00th=[ 215], 99.50th=[ 243], 99.90th=[ 439], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 152, per=25.73%, avg=34.47, stdev=26.57, samples=337 iops : min= 1, max= 38, avg= 7.93, stdev= 6.70, samples=337 write: IOPS=8, BW=35.4KiB/s (36.2kB/s)(6296KiB/178036msec); 0 zone resets clat (msec): min=11, max=490, avg=69.53, stdev=51.31 lat (msec): min=11, max=490, avg=69.53, stdev=51.31 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 52], 60.00th=[ 64], | 70.00th=[ 81], 80.00th=[ 105], 90.00th=[ 142], 95.00th=[ 169], | 99.00th=[ 251], 99.50th=[ 292], 99.90th=[ 443], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 7, max= 104, per=25.10%, avg=35.14, stdev=23.89, samples=347 iops : min= 1, max= 26, avg= 8.11, stdev= 6.04, samples=347 lat (msec) : 10=2.05%, 20=14.36%, 50=43.42%, 100=24.06%, 250=15.40% lat (msec) : 500=0.68%, 1000=0.03% cpu : usr=0.06%, sys=2.01%, ctx=5007, 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=179800: Wed Aug 19 05:09:09 2026 read: IOPS=8, BW=33.3KiB/s (34.1kB/s)(5940KiB/178312msec) clat (msec): min=6, max=774, avg=46.82, stdev=49.77 lat (msec): min=6, max=774, avg=46.82, stdev=49.77 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 48], 80.00th=[ 67], 90.00th=[ 108], 95.00th=[ 142], | 99.00th=[ 224], 99.50th=[ 279], 99.90th=[ 439], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 160, per=25.64%, avg=34.36, stdev=25.30, samples=336 iops : min= 1, max= 40, avg= 7.91, stdev= 6.41, samples=336 write: IOPS=8, BW=35.6KiB/s (36.5kB/s)(6348KiB/178312msec); 0 zone resets clat (msec): min=11, max=430, avg=68.31, stdev=51.42 lat (msec): min=11, max=430, avg=68.31, stdev=51.42 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 62], | 70.00th=[ 81], 80.00th=[ 103], 90.00th=[ 136], 95.00th=[ 165], | 99.00th=[ 275], 99.50th=[ 296], 99.90th=[ 397], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 7, max= 110, per=25.26%, avg=35.36, stdev=24.70, samples=349 iops : min= 1, max= 27, avg= 8.16, stdev= 6.23, samples=349 lat (msec) : 10=1.37%, 20=14.71%, 50=44.86%, 100=22.62%, 250=15.56% lat (msec) : 500=0.85%, 1000=0.03% cpu : usr=0.06%, sys=2.04%, ctx=4987, 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=179802: Wed Aug 19 05:09:09 2026 read: IOPS=8, BW=34.0KiB/s (34.8kB/s)(6028KiB/177194msec) clat (msec): min=6, max=419, avg=46.22, stdev=43.56 lat (msec): min=6, max=419, avg=46.22, stdev=43.56 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 49], 80.00th=[ 72], 90.00th=[ 106], 95.00th=[ 142], | 99.00th=[ 199], 99.50th=[ 218], 99.90th=[ 338], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 151, per=26.41%, avg=35.39, stdev=24.96, samples=330 iops : min= 1, max= 37, avg= 8.17, stdev= 6.32, samples=330 write: IOPS=8, BW=35.3KiB/s (36.2kB/s)(6260KiB/177194msec); 0 zone resets clat (msec): min=13, max=797, avg=68.48, stdev=53.99 lat (msec): min=13, max=797, avg=68.49, stdev=53.99 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 62], | 70.00th=[ 81], 80.00th=[ 104], 90.00th=[ 136], 95.00th=[ 167], | 99.00th=[ 251], 99.50th=[ 296], 99.90th=[ 493], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 120, per=25.44%, avg=35.61, stdev=24.19, samples=340 iops : min= 1, max= 30, avg= 8.22, stdev= 6.12, samples=340 lat (msec) : 10=1.82%, 20=15.10%, 50=43.68%, 100=22.66%, 250=16.11% lat (msec) : 500=0.59%, 1000=0.03% cpu : usr=0.07%, sys=2.07%, ctx=4961, 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=179803: Wed Aug 19 05:09:09 2026 read: IOPS=8, BW=34.1KiB/s (34.9kB/s)(6052KiB/177609msec) clat (msec): min=6, max=428, avg=45.31, stdev=42.45 lat (msec): min=6, max=428, avg=45.31, stdev=42.45 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 37], | 70.00th=[ 47], 80.00th=[ 69], 90.00th=[ 104], 95.00th=[ 136], | 99.00th=[ 203], 99.50th=[ 232], 99.90th=[ 275], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 7, max= 126, per=26.64%, avg=35.69, stdev=24.99, samples=329 iops : min= 1, max= 31, avg= 8.25, stdev= 6.31, samples=329 write: IOPS=8, BW=35.1KiB/s (35.0kB/s)(6236KiB/177609msec); 0 zone resets clat (msec): min=12, max=774, avg=69.71, stdev=56.74 lat (msec): min=12, max=774, avg=69.72, stdev=56.74 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 51], 60.00th=[ 63], | 70.00th=[ 81], 80.00th=[ 105], 90.00th=[ 136], 95.00th=[ 167], | 99.00th=[ 275], 99.50th=[ 338], 99.90th=[ 502], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 128, per=24.98%, avg=34.97, stdev=24.24, samples=345 iops : min= 1, max= 32, avg= 8.06, stdev= 6.11, samples=345 lat (msec) : 10=1.43%, 20=14.81%, 50=44.63%, 100=22.82%, 250=15.56% lat (msec) : 500=0.68%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=2.12%, ctx=5106, 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=135KiB/s (138kB/s), 33.3KiB/s-34.1KiB/s (34.1kB/s-34.9kB/s), io=23.4MiB (24.6MB), run=177194-178312msec WRITE: bw=141KiB/s (144kB/s), 35.1KiB/s-35.6KiB/s (35.0kB/s-36.5kB/s), io=24.6MiB (25.7MB), run=177194-178312msec 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=179849: Wed Aug 19 05:10:02 2026 read: IOPS=9, BW=145KiB/s (149kB/s)(5920KiB/40747msec) clat (usec): min=52, max=320015, avg=58769.31, stdev=43455.51 lat (usec): min=54, max=320016, avg=58771.14, stdev=43455.63 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 76], 10.00th=[ 18744], 20.00th=[ 29492], | 30.00th=[ 35390], 40.00th=[ 43254], 50.00th=[ 50070], 60.00th=[ 57410], | 70.00th=[ 68682], 80.00th=[ 82314], 90.00th=[105382], 95.00th=[135267], | 99.00th=[219153], 99.50th=[270533], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 31, max= 350, per=24.76%, avg=145.33, stdev=65.96, samples=80 iops : min= 1, max= 21, avg= 8.34, stdev= 4.14, samples=80 write: IOPS=9, BW=156KiB/s (160kB/s)(6368KiB/40747msec); 0 zone resets clat (usec): min=1717, max=234829, avg=46440.16, stdev=39963.75 lat (usec): min=1719, max=234831, avg=46442.73, stdev=39963.60 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2638], 10.00th=[ 4228], 20.00th=[ 8979], | 30.00th=[ 17433], 40.00th=[ 28443], 50.00th=[ 37487], 60.00th=[ 47449], | 70.00th=[ 60556], 80.00th=[ 80217], 90.00th=[103285], 95.00th=[124257], | 99.00th=[173016], 99.50th=[204473], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 381, per=25.68%, avg=158.70, stdev=75.21, samples=79 iops : min= 1, max= 23, avg= 9.18, stdev= 4.79, samples=79 lat (usec) : 100=2.86%, 250=0.13%, 500=0.26% lat (msec) : 2=1.95%, 4=2.73%, 10=6.25%, 20=8.07%, 50=34.38% lat (msec) : 100=31.64%, 250=11.46%, 500=0.26% cpu : usr=0.08%, sys=5.08%, ctx=1823, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179850: Wed Aug 19 05:10:02 2026 read: IOPS=9, BW=149KiB/s (153kB/s)(5744KiB/38438msec) clat (usec): min=51, max=274824, avg=56931.95, stdev=40163.38 lat (usec): min=52, max=274825, avg=56933.87, stdev=40163.69 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 88], 10.00th=[ 17433], 20.00th=[ 27657], | 30.00th=[ 36439], 40.00th=[ 43254], 50.00th=[ 49546], 60.00th=[ 56886], | 70.00th=[ 67634], 80.00th=[ 80217], 90.00th=[105382], 95.00th=[129500], | 99.00th=[208667], 99.50th=[240124], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 21, max= 312, per=25.78%, avg=151.34, stdev=61.59, samples=74 iops : min= 1, max= 19, avg= 8.73, stdev= 3.92, samples=74 write: IOPS=10, BW=170KiB/s (174kB/s)(6544KiB/38438msec); 0 zone resets clat (usec): min=1649, max=239041, avg=43009.23, stdev=42275.83 lat (usec): min=1651, max=239043, avg=43030.76, stdev=42294.53 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2704], 10.00th=[ 4293], 20.00th=[ 7373], | 30.00th=[ 12649], 40.00th=[ 21627], 50.00th=[ 31851], 60.00th=[ 40633], | 70.00th=[ 53216], 80.00th=[ 71828], 90.00th=[ 99091], 95.00th=[126354], | 99.00th=[193987], 99.50th=[210764], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 62, max= 448, per=27.64%, avg=170.80, stdev=84.18, samples=75 iops : min= 3, max= 28, avg= 9.95, stdev= 5.38, samples=75 lat (usec) : 100=2.47%, 250=0.65%, 500=0.26%, 750=0.13% lat (msec) : 2=1.69%, 4=3.12%, 10=8.85%, 20=9.38%, 50=33.07% lat (msec) : 100=29.82%, 250=10.42%, 500=0.13% cpu : usr=0.05%, sys=5.47%, ctx=1839, 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=179851: Wed Aug 19 05:10:02 2026 read: IOPS=10, BW=162KiB/s (166kB/s)(6256KiB/38661msec) clat (usec): min=54, max=222695, avg=53735.96, stdev=31697.56 lat (usec): min=56, max=222696, avg=53739.95, stdev=31696.78 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 76], 10.00th=[ 23725], 20.00th=[ 29492], | 30.00th=[ 38011], 40.00th=[ 43254], 50.00th=[ 50070], 60.00th=[ 57410], | 70.00th=[ 64750], 80.00th=[ 72877], 90.00th=[ 88605], 95.00th=[108528], | 99.00th=[173016], 99.50th=[204473], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 31, max= 287, per=27.64%, avg=162.26, stdev=54.54, samples=76 iops : min= 1, max= 17, avg= 9.41, stdev= 3.47, samples=76 write: IOPS=9, BW=156KiB/s (160kB/s)(6032KiB/38661msec); 0 zone resets clat (usec): min=1454, max=248972, avg=45677.09, stdev=43956.36 lat (usec): min=1457, max=248975, avg=45681.64, stdev=43956.15 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2376], 10.00th=[ 4490], 20.00th=[ 7767], | 30.00th=[ 14091], 40.00th=[ 21365], 50.00th=[ 29754], 60.00th=[ 43779], | 70.00th=[ 62129], 80.00th=[ 77071], 90.00th=[108528], 95.00th=[141558], | 99.00th=[173016], 99.50th=[242222], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 384, per=25.19%, avg=155.67, stdev=80.97, samples=76 iops : min= 1, max= 24, avg= 9.00, stdev= 5.14, samples=76 lat (usec) : 100=2.99%, 250=0.39% lat (msec) : 2=1.95%, 4=2.73%, 10=6.90%, 20=8.20%, 50=32.81% lat (msec) : 100=34.77%, 250=9.24% cpu : usr=0.07%, sys=4.92%, ctx=1779, 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=179853: Wed Aug 19 05:10:02 2026 read: IOPS=10, BW=164KiB/s (168kB/s)(6032KiB/36716msec) clat (usec): min=52, max=225723, avg=53589.48, stdev=35072.42 lat (usec): min=53, max=225724, avg=53601.34, stdev=35066.66 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 73], 10.00th=[ 12125], 20.00th=[ 27657], | 30.00th=[ 34866], 40.00th=[ 40633], 50.00th=[ 49546], 60.00th=[ 55837], | 70.00th=[ 65274], 80.00th=[ 78119], 90.00th=[ 96994], 95.00th=[122160], | 99.00th=[168821], 99.50th=[198181], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 31, max= 416, per=27.90%, avg=163.79, stdev=72.66, samples=72 iops : min= 1, max= 26, avg= 9.51, stdev= 4.60, samples=72 write: IOPS=10, BW=170KiB/s (174kB/s)(6256KiB/36716msec); 0 zone resets clat (usec): min=1609, max=281886, avg=41944.65, stdev=42106.97 lat (usec): min=1611, max=281889, avg=41962.24, stdev=42107.78 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2008], 10.00th=[ 3752], 20.00th=[ 7373], | 30.00th=[ 11994], 40.00th=[ 19006], 50.00th=[ 28181], 60.00th=[ 39060], | 70.00th=[ 54264], 80.00th=[ 76022], 90.00th=[ 96994], 95.00th=[122160], | 99.00th=[193987], 99.50th=[208667], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 31, max= 413, per=27.62%, avg=170.72, stdev=70.85, samples=72 iops : min= 1, max= 25, avg= 9.94, stdev= 4.46, samples=72 lat (usec) : 100=3.12%, 250=0.91%, 500=0.13%, 750=0.13% lat (msec) : 2=2.73%, 4=3.12%, 10=7.94%, 20=9.51%, 50=32.03% lat (msec) : 100=31.51%, 250=8.72%, 500=0.13% cpu : usr=0.06%, sys=5.27%, ctx=1784, 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=588KiB/s (602kB/s), 145KiB/s-164KiB/s (149kB/s-168kB/s), io=23.4MiB (24.5MB), run=36716-40747msec WRITE: bw=618KiB/s (633kB/s), 156KiB/s-170KiB/s (160kB/s-174kB/s), io=24.6MiB (25.8MB), run=36716-40747msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179852: Wed Aug 19 05:10:14 2026 read: IOPS=7, BW=114KiB/s (116kB/s)(5920KiB/52052msec) clat (msec): min=8, max=379, avg=54.92, stdev=46.02 lat (msec): min=8, max=379, avg=54.93, stdev=46.02 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 48], | 70.00th=[ 58], 80.00th=[ 78], 90.00th=[ 121], 95.00th=[ 148], | 99.00th=[ 205], 99.50th=[ 213], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 31, max= 381, per=26.13%, avg=118.11, stdev=73.48, samples=99 iops : min= 1, max= 23, avg= 6.58, stdev= 4.67, samples=99 write: IOPS=7, BW=122KiB/s (125kB/s)(6368KiB/52052msec); 0 zone resets clat (msec): min=18, max=353, avg=79.25, stdev=53.03 lat (msec): min=18, max=353, avg=79.25, stdev=53.03 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 28], 10.00th=[ 31], 20.00th=[ 38], | 30.00th=[ 46], 40.00th=[ 54], 50.00th=[ 61], 60.00th=[ 71], | 70.00th=[ 92], 80.00th=[ 116], 90.00th=[ 150], 95.00th=[ 180], | 99.00th=[ 253], 99.50th=[ 321], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 30, max= 319, per=25.60%, avg=121.83, stdev=69.83, samples=103 iops : min= 1, max= 19, avg= 6.81, stdev= 4.41, samples=103 lat (msec) : 10=0.26%, 20=6.38%, 50=40.76%, 100=31.64%, 250=20.18% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.95%, ctx=1301, 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=179854: Wed Aug 19 05:10:14 2026 read: IOPS=6, BW=109KiB/s (111kB/s)(5744KiB/52893msec) clat (msec): min=10, max=334, avg=54.85, stdev=48.01 lat (msec): min=10, max=334, avg=54.85, stdev=48.01 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 56], 80.00th=[ 75], 90.00th=[ 126], 95.00th=[ 167], | 99.00th=[ 232], 99.50th=[ 271], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 30, max= 383, per=24.69%, avg=111.60, stdev=76.93, samples=100 iops : min= 1, max= 23, avg= 6.15, stdev= 4.87, samples=100 write: IOPS=7, BW=124KiB/s (127kB/s)(6544KiB/52893msec); 0 zone resets clat (msec): min=17, max=309, avg=80.18, stdev=50.56 lat (msec): min=17, max=309, avg=80.20, stdev=50.57 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 28], 10.00th=[ 33], 20.00th=[ 41], | 30.00th=[ 47], 40.00th=[ 56], 50.00th=[ 65], 60.00th=[ 78], | 70.00th=[ 93], 80.00th=[ 116], 90.00th=[ 157], 95.00th=[ 182], | 99.00th=[ 241], 99.50th=[ 253], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 30, max= 348, per=26.69%, avg=127.06, stdev=66.34, samples=100 iops : min= 1, max= 21, avg= 7.14, stdev= 4.21, samples=100 lat (msec) : 20=7.81%, 50=41.02%, 100=30.73%, 250=19.79%, 500=0.65% cpu : usr=0.04%, sys=1.91%, ctx=1281, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179855: Wed Aug 19 05:10:14 2026 read: IOPS=7, BW=121KiB/s (124kB/s)(6256KiB/51774msec) clat (msec): min=7, max=306, avg=55.27, stdev=45.79 lat (msec): min=7, max=306, avg=55.27, stdev=45.81 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 48], | 70.00th=[ 58], 80.00th=[ 79], 90.00th=[ 118], 95.00th=[ 161], | 99.00th=[ 205], 99.50th=[ 292], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 30, max= 351, per=27.56%, avg=124.57, stdev=78.21, samples=99 iops : min= 1, max= 21, avg= 6.97, stdev= 4.95, samples=99 write: IOPS=7, BW=117KiB/s (119kB/s)(6032KiB/51774msec); 0 zone resets clat (msec): min=16, max=270, avg=78.71, stdev=51.73 lat (msec): min=16, max=270, avg=78.71, stdev=51.73 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 26], 10.00th=[ 32], 20.00th=[ 39], | 30.00th=[ 45], 40.00th=[ 52], 50.00th=[ 61], 60.00th=[ 75], | 70.00th=[ 90], 80.00th=[ 117], 90.00th=[ 157], 95.00th=[ 190], | 99.00th=[ 262], 99.50th=[ 271], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 30, max= 348, per=25.12%, avg=119.58, stdev=65.79, samples=98 iops : min= 1, max= 21, avg= 6.66, stdev= 4.16, samples=98 lat (msec) : 10=0.39%, 20=7.81%, 50=42.71%, 100=29.43%, 250=18.75% lat (msec) : 500=0.91% cpu : usr=0.04%, sys=1.90%, ctx=1236, 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=179856: Wed Aug 19 05:10:14 2026 read: IOPS=7, BW=114KiB/s (117kB/s)(6032KiB/52763msec) clat (msec): min=8, max=333, avg=54.52, stdev=47.83 lat (msec): min=8, max=333, avg=54.52, stdev=47.83 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 55], 80.00th=[ 74], 90.00th=[ 126], 95.00th=[ 157], | 99.00th=[ 268], 99.50th=[ 275], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 348, per=26.75%, avg=120.92, stdev=72.25, samples=97 iops : min= 1, max= 21, avg= 6.75, stdev= 4.56, samples=97 write: IOPS=7, BW=119KiB/s (121kB/s)(6256KiB/52763msec); 0 zone resets clat (msec): min=16, max=347, avg=81.18, stdev=53.31 lat (msec): min=16, max=347, avg=81.19, stdev=53.31 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 27], 10.00th=[ 34], 20.00th=[ 41], | 30.00th=[ 46], 40.00th=[ 55], 50.00th=[ 65], 60.00th=[ 80], | 70.00th=[ 93], 80.00th=[ 116], 90.00th=[ 148], 95.00th=[ 180], | 99.00th=[ 288], 99.50th=[ 342], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 30, max= 351, per=25.43%, avg=121.07, stdev=68.26, samples=101 iops : min= 1, max= 21, avg= 6.76, stdev= 4.33, samples=101 lat (msec) : 10=0.52%, 20=7.29%, 50=42.58%, 100=27.86%, 250=20.44% lat (msec) : 500=1.30% cpu : usr=0.04%, sys=1.90%, ctx=1301, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=453KiB/s (464kB/s), 109KiB/s-121KiB/s (111kB/s-124kB/s), io=23.4MiB (24.5MB), run=51774-52893msec WRITE: bw=476KiB/s (488kB/s), 117KiB/s-124KiB/s (119kB/s-127kB/s), io=24.6MiB (25.8MB), run=51774-52893msec 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=179872: Wed Aug 19 05:10:31 2026 read: IOPS=1, BW=1547KiB/s (1584kB/s)(7168KiB/4633msec) clat (usec): min=512, max=1924.2k, avg=474148.06, stdev=664145.93 lat (usec): min=515, max=1924.2k, avg=474149.69, stdev=664145.65 clat percentiles (usec): | 1.00th=[ 515], 5.00th=[ 515], 10.00th=[ 515], | 20.00th=[ 173016], 30.00th=[ 202376], 40.00th=[ 202376], | 50.00th=[ 204473], 60.00th=[ 217056], 70.00th=[ 217056], | 80.00th=[ 599786], 90.00th=[1920992], 95.00th=[1920992], | 99.00th=[1920992], 99.50th=[1920992], 99.90th=[1920992], | 99.95th=[1920992], 99.99th=[1920992] bw ( KiB/s): min= 2039, max= 3696, per=88.59%, avg=2892.33, stdev=829.62, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1105KiB/s (1132kB/s)(5120KiB/4633msec); 0 zone resets clat (msec): min=154, max=251, avg=221.12, stdev=40.88 lat (msec): min=158, max=251, avg=221.95, stdev=39.39 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 209], 40.00th=[ 209], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 249], 80.00th=[ 249], 90.00th=[ 251], 95.00th=[ 251], | 99.00th=[ 251], 99.50th=[ 251], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 1848, max= 4079, per=58.09%, avg=2655.33, stdev=1236.62, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=66.67%, 500=8.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=11.87%, ctx=148, 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=179874: Wed Aug 19 05:10:31 2026 read: IOPS=0, BW=327KiB/s (334kB/s)(2048KiB/6272msec) clat (usec): min=1743, max=210679, avg=106211.58, stdev=147739.56 lat (usec): min=1745, max=210682, avg=106213.86, stdev=147740.28 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 1745], 10.00th=[ 1745], 20.00th=[ 1745], | 30.00th=[ 1745], 40.00th=[ 1745], 50.00th=[ 1745], 60.00th=[210764], | 70.00th=[210764], 80.00th=[210764], 90.00th=[210764], 95.00th=[210764], | 99.00th=[210764], 99.50th=[210764], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 1358, max= 1973, per=51.01%, avg=1665.50, stdev=434.87, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1633KiB/s (1672kB/s)(10.0MiB/6272msec); 0 zone resets clat (msec): min=62, max=2145, avg=591.50, stdev=592.44 lat (msec): min=62, max=2145, avg=591.59, stdev=592.43 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 176], | 30.00th=[ 253], 40.00th=[ 326], 50.00th=[ 414], 60.00th=[ 489], | 70.00th=[ 527], 80.00th=[ 760], 90.00th=[ 768], 95.00th=[ 2140], | 99.00th=[ 2140], 99.50th=[ 2140], 99.90th=[ 2140], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 1848, max= 4071, per=65.52%, avg=2994.83, stdev=1142.74, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 2=8.33%, 100=8.33%, 250=16.67%, 500=33.33%, 750=8.33% lat (msec) : 1000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=10.06%, ctx=194, 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=179876: Wed Aug 19 05:10:31 2026 read: IOPS=1, BW=1055KiB/s (1080kB/s)(6144KiB/5823msec) clat (usec): min=365, max=2319.6k, avg=516581.58, stdev=928812.71 lat (usec): min=365, max=2319.6k, avg=516582.78, stdev=928812.86 clat percentiles (usec): | 1.00th=[ 367], 5.00th=[ 367], 10.00th=[ 367], | 20.00th=[ 506], 30.00th=[ 506], 40.00th=[ 1795], | 50.00th=[ 1795], 60.00th=[ 47973], 70.00th=[ 725615], | 80.00th=[ 725615], 90.00th=[2332034], 95.00th=[2332034], | 99.00th=[2332034], 99.50th=[2332034], 99.90th=[2332034], | 99.95th=[2332034], 99.99th=[2332034] bw ( KiB/s): min= 2003, max= 3946, per=76.75%, avg=2505.75, stdev=960.30, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1055KiB/s (1080kB/s)(6144KiB/5823msec); 0 zone resets clat (msec): min=183, max=558, avg=392.84, stdev=126.52 lat (msec): min=183, max=558, avg=392.91, stdev=126.55 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 447], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1848, max= 4071, per=65.08%, avg=2974.75, stdev=1230.23, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 50=8.33%, 250=8.33%, 500=33.33%, 750=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=9.77%, ctx=547, 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=179878: Wed Aug 19 05:10:31 2026 read: IOPS=0, BW=919KiB/s (941kB/s)(5120KiB/5570msec) clat (usec): min=668, max=174102, avg=59575.36, stdev=82439.31 lat (usec): min=669, max=174104, avg=59576.84, stdev=82439.46 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 668], 10.00th=[ 668], 20.00th=[ 668], | 30.00th=[ 832], 40.00th=[ 832], 50.00th=[ 1369], 60.00th=[ 1369], | 70.00th=[121111], 80.00th=[121111], 90.00th=[175113], 95.00th=[175113], | 99.00th=[175113], 99.50th=[175113], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1287KiB/s (1318kB/s)(7168KiB/5570msec); 0 zone resets clat (msec): min=225, max=2067, avg=696.62, stdev=632.64 lat (msec): min=225, max=2067, avg=696.83, stdev=632.55 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 300], | 30.00th=[ 393], 40.00th=[ 393], 50.00th=[ 527], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 785], 90.00th=[ 2072], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 1438, max= 2039, per=41.80%, avg=1910.80, stdev=264.73, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=16.67%, 750=16.67%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.04%, sys=9.89%, ctx=164, 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=3265KiB/s (3344kB/s), 327KiB/s-1547KiB/s (334kB/s-1584kB/s), io=20.0MiB (20.0MB), run=4633-6272msec WRITE: bw=4571KiB/s (4681kB/s), 1055KiB/s-1633KiB/s (1080kB/s-1672kB/s), io=28.0MiB (29.4MB), run=4633-6272msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179871: Wed Aug 19 05:10:32 2026 read: IOPS=1, BW=1075KiB/s (1100kB/s)(7168KiB/6671msec) clat (msec): min=110, max=280, avg=187.77, stdev=71.45 lat (msec): min=110, max=280, avg=187.77, stdev=71.45 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 115], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 182], 60.00th=[ 224], | 70.00th=[ 224], 80.00th=[ 271], 90.00th=[ 279], 95.00th=[ 279], | 99.00th=[ 279], 99.50th=[ 279], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 1460, max= 4096, per=100.00%, avg=3211.67, stdev=1517.01, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=0, BW=768KiB/s (786kB/s)(5120KiB/6671msec); 0 zone resets clat (msec): min=317, max=2365, avg=1013.10, stdev=801.47 lat (msec): min=317, max=2365, avg=1013.22, stdev=801.47 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 1045], 80.00th=[ 1045], 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= 2019, max= 2048, per=47.43%, avg=2032.25, stdev=13.60, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.40%, ctx=84, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179873: Wed Aug 19 05:10:32 2026 read: IOPS=0, BW=310KiB/s (317kB/s)(2048KiB/6615msec) clat (msec): min=90, max=258, avg=174.72, stdev=118.85 lat (msec): min=90, max=258, avg=174.72, stdev=118.85 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 91], | 30.00th=[ 91], 40.00th=[ 91], 50.00th=[ 91], 60.00th=[ 259], | 70.00th=[ 259], 80.00th=[ 259], 90.00th=[ 259], 95.00th=[ 259], | 99.00th=[ 259], 99.50th=[ 259], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 1456, max= 2043, per=57.15%, avg=1749.50, stdev=415.07, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1548KiB/s (1585kB/s)(10.0MiB/6615msec); 0 zone resets clat (msec): min=131, max=2695, avg=605.57, stdev=769.49 lat (msec): min=131, max=2695, avg=605.89, stdev=769.39 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 182], 50.00th=[ 300], 60.00th=[ 460], | 70.00th=[ 510], 80.00th=[ 726], 90.00th=[ 743], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 2019, max= 4087, per=55.45%, avg=2375.83, stdev=838.37, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=25.00%, >=2000=8.33% cpu : usr=0.02%, sys=4.76%, ctx=131, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179875: Wed Aug 19 05:10:32 2026 read: IOPS=0, BW=918KiB/s (940kB/s)(6144KiB/6690msec) clat (msec): min=68, max=2543, avg=661.16, stdev=937.69 lat (msec): min=68, max=2543, avg=661.16, stdev=937.69 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 405], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 2534], 95.00th=[ 2534], | 99.00th=[ 2534], 99.50th=[ 2534], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 2019, max= 2048, per=66.42%, avg=2033.25, stdev=14.38, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 write: IOPS=0, BW=918KiB/s (940kB/s)(6144KiB/6690msec); 0 zone resets clat (msec): min=119, max=680, avg=406.95, stdev=200.93 lat (msec): min=119, max=680, avg=411.63, stdev=205.81 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 414], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1408, max= 4055, per=58.36%, avg=2500.67, stdev=1382.57, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=25.00%, >=2000=8.33% cpu : usr=0.01%, sys=3.36%, ctx=96, 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=179877: Wed Aug 19 05:10:32 2026 read: IOPS=0, BW=941KiB/s (964kB/s)(5120KiB/5439msec) clat (msec): min=111, max=631, avg=251.60, stdev=214.93 lat (msec): min=111, max=631, avg=251.61, stdev=214.93 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 174], 60.00th=[ 174], | 70.00th=[ 199], 80.00th=[ 199], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1318KiB/s (1350kB/s)(7168KiB/5439msec); 0 zone resets clat (msec): min=130, max=2276, avg=591.42, stdev=769.79 lat (msec): min=131, max=2276, avg=591.53, stdev=769.81 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 132], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 224], 60.00th=[ 535], | 70.00th=[ 535], 80.00th=[ 642], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 2019, max= 4284, per=60.57%, avg=2595.25, stdev=1125.87, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 250=66.67%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=2.56%, ctx=70, 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=3061KiB/s (3135kB/s), 310KiB/s-1075KiB/s (317kB/s-1100kB/s), io=20.0MiB (20.0MB), run=5439-6690msec WRITE: bw=4286KiB/s (4389kB/s), 768KiB/s-1548KiB/s (786kB/s-1585kB/s), io=28.0MiB (29.4MB), run=5439-6690msec 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=179884: Wed Aug 19 05:10:46 2026 read: IOPS=0, BW=3660KiB/s (3748kB/s)(12.0MiB/3357msec) clat (msec): min=587, max=1325, avg=1077.63, stdev=424.59 lat (msec): min=587, max=1325, avg=1077.63, stdev=424.59 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 1334], 80.00th=[ 1334], 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= 7772, max= 8062, per=100.00%, avg=7917.00, stdev=205.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.92%, ctx=55, 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=179885: Wed Aug 19 05:10:46 2026 read: IOPS=0, BW=987KiB/s (1011kB/s)(4096KiB/4149msec) clat (nsec): min=1323.9M, max=1323.9M, avg=1323865611.00, stdev= 0.00 lat (nsec): min=1323.9M, max=1323.9M, avg=1323868474.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1318], 5.00th=[ 1318], 10.00th=[ 1318], 20.00th=[ 1318], | 30.00th=[ 1318], 40.00th=[ 1318], 50.00th=[ 1318], 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= 7772, max= 7772, per=100.00%, avg=7772.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1974KiB/s (2022kB/s)(8192KiB/4149msec); 0 zone resets clat (msec): min=309, max=2251, avg=1280.21, stdev=1373.43 lat (msec): min=309, max=2251, avg=1280.62, stdev=1373.41 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 2265], | 70.00th=[ 2265], 80.00th=[ 2265], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] 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=2.89%, ctx=61, 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=179886: Wed Aug 19 05:10:46 2026 write: IOPS=1, BW=5877KiB/s (6018kB/s)(12.0MiB/2091msec); 0 zone resets clat (msec): min=288, max=1380, avg=658.10, stdev=625.77 lat (msec): min=291, max=1380, avg=659.33, stdev=625.01 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 6907, max= 8062, per=94.78%, avg=7484.50, stdev=816.71, 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=0.00%, sys=6.41%, ctx=61, 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=179888: Wed Aug 19 05:10:46 2026 write: IOPS=1, BW=4551KiB/s (4660kB/s)(12.0MiB/2700msec); 0 zone resets clat (msec): min=437, max=1494, avg=839.44, stdev=572.32 lat (msec): min=437, max=1495, avg=840.17, stdev=572.80 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8062, max= 8143, per=100.00%, avg=8102.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.85%, ctx=69, 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=3949KiB/s (4044kB/s), 987KiB/s-3660KiB/s (1011kB/s-3748kB/s), io=16.0MiB (16.8MB), run=3357-4149msec WRITE: bw=7898KiB/s (8087kB/s), 1974KiB/s-5877KiB/s (2022kB/s-6018kB/s), io=32.0MiB (33.6MB), run=2091-4149msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179889: Wed Aug 19 05:10:46 2026 read: IOPS=1, BW=4658KiB/s (4770kB/s)(12.0MiB/2638msec) clat (msec): min=843, max=893, avg=865.86, stdev=25.89 lat (msec): min=843, max=893, avg=865.86, stdev=25.89 clat percentiles (msec): | 1.00th=[ 844], 5.00th=[ 844], 10.00th=[ 844], 20.00th=[ 844], | 30.00th=[ 844], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 8062, max= 8126, per=100.00%, avg=8094.00, stdev=45.25, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=14.03%, ctx=249, 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=179890: Wed Aug 19 05:10:46 2026 read: IOPS=0, BW=1373KiB/s (1406kB/s)(4096KiB/2984msec) clat (nsec): min=851077k, max=851077k, avg=851076759.00, stdev= 0.00 lat (nsec): min=851079k, max=851079k, avg=851079289.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2745KiB/s (2811kB/s)(8192KiB/2984msec); 0 zone resets clat (msec): min=802, max=1256, avg=1029.48, stdev=321.29 lat (msec): min=802, max=1257, avg=1030.25, stdev=321.91 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 1250], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 8175, max= 8175, per=93.07%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.50%, ctx=85, 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=179891: Wed Aug 19 05:10:46 2026 write: IOPS=0, BW=3294KiB/s (3373kB/s)(12.0MiB/3730msec); 0 zone resets clat (msec): min=968, max=1612, avg=1224.51, stdev=341.74 lat (msec): min=968, max=1612, avg=1225.52, stdev=341.42 clat percentiles (msec): | 1.00th=[ 969], 5.00th=[ 969], 10.00th=[ 969], 20.00th=[ 969], | 30.00th=[ 969], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 8175, max= 8175, per=93.07%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.22%, 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=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=179892: Wed Aug 19 05:10:46 2026 write: IOPS=0, BW=3410KiB/s (3491kB/s)(12.0MiB/3604msec); 0 zone resets clat (msec): min=270, max=2395, avg=1182.00, stdev=1094.05 lat (msec): min=271, max=2395, avg=1182.55, stdev=1093.70 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 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=93.07%, 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%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.08%, 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=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=5491KiB/s (5622kB/s), 1373KiB/s-4658KiB/s (1406kB/s-4770kB/s), io=16.0MiB (16.8MB), run=2638-2984msec WRITE: bw=8785KiB/s (8996kB/s), 2745KiB/s-3410KiB/s (2811kB/s-3491kB/s), io=32.0MiB (33.6MB), run=2984-3730msec