== sanity test 398b: DIO and buffer IO race ============== 07:57:23 (1786967843) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.99599 s, 8.4 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=179501: Mon Aug 17 07:59:36 2026 read: IOPS=13, BW=53.6KiB/s (54.9kB/s)(5992KiB/111696msec) clat (usec): min=34, max=661242, avg=41172.82, stdev=30739.93 lat (usec): min=34, max=661244, avg=41175.13, stdev=30739.84 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11994], 10.00th=[ 16581], 20.00th=[ 21103], | 30.00th=[ 25822], 40.00th=[ 30016], 50.00th=[ 35390], 60.00th=[ 41681], | 70.00th=[ 48497], 80.00th=[ 56886], 90.00th=[ 70779], 95.00th=[ 90702], | 99.00th=[135267], 99.50th=[149947], 99.90th=[316670], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 7, max= 104, per=25.27%, avg=53.32, stdev=19.74, samples=219 iops : min= 1, max= 26, avg=12.68, stdev= 4.98, samples=219 write: IOPS=14, BW=56.4KiB/s (57.7kB/s)(6296KiB/111696msec); 0 zone resets clat (usec): min=981, max=196693, avg=31687.02, stdev=30689.01 lat (usec): min=982, max=196694, avg=31689.61, stdev=30689.05 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1418], 10.00th=[ 1729], 20.00th=[ 4113], | 30.00th=[ 7504], 40.00th=[ 16712], 50.00th=[ 25035], 60.00th=[ 31851], | 70.00th=[ 41157], 80.00th=[ 54264], 90.00th=[ 73925], 95.00th=[ 95945], | 99.00th=[130548], 99.50th=[139461], 99.90th=[183501], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 7, max= 149, per=25.36%, avg=56.05, stdev=24.13, samples=219 iops : min= 1, max= 37, avg=13.37, stdev= 6.11, samples=219 lat (usec) : 50=0.20%, 100=1.63%, 250=0.10%, 750=0.03%, 1000=0.03% lat (msec) : 2=5.92%, 4=4.13%, 10=7.62%, 20=10.90%, 50=44.24% lat (msec) : 100=21.52%, 250=3.61%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=5.47%, ctx=6597, 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=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=179502: Mon Aug 17 07:59:36 2026 read: IOPS=13, BW=52.7KiB/s (53.9kB/s)(5940KiB/112811msec) clat (usec): min=39, max=641373, avg=42033.34, stdev=29914.42 lat (usec): min=40, max=641375, avg=42034.60, stdev=29914.44 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 13173], 10.00th=[ 16909], 20.00th=[ 22414], | 30.00th=[ 26608], 40.00th=[ 30802], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 50070], 80.00th=[ 58983], 90.00th=[ 72877], 95.00th=[ 87557], | 99.00th=[132645], 99.50th=[145753], 99.90th=[225444], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 7, max= 95, per=24.72%, avg=52.16, stdev=17.80, samples=221 iops : min= 1, max= 23, avg=12.40, stdev= 4.48, samples=221 write: IOPS=14, BW=56.3KiB/s (57.6kB/s)(6348KiB/112811msec); 0 zone resets clat (usec): min=795, max=301059, avg=31630.24, stdev=32178.23 lat (usec): min=795, max=301060, avg=31631.94, stdev=32178.21 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1401], 10.00th=[ 1762], 20.00th=[ 3851], | 30.00th=[ 7570], 40.00th=[ 14746], 50.00th=[ 23200], 60.00th=[ 30278], | 70.00th=[ 40109], 80.00th=[ 56361], 90.00th=[ 76022], 95.00th=[ 92799], | 99.00th=[139461], 99.50th=[156238], 99.90th=[219153], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 7, max= 168, per=25.18%, avg=55.64, stdev=23.52, samples=221 iops : min= 1, max= 42, avg=13.28, stdev= 5.95, samples=221 lat (usec) : 50=0.13%, 100=1.37%, 250=0.10%, 1000=0.23% lat (msec) : 2=5.76%, 4=4.69%, 10=6.71%, 20=12.40%, 50=42.12% lat (msec) : 100=23.18%, 250=3.26%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=5.51%, ctx=6565, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179503: Mon Aug 17 07:59:36 2026 read: IOPS=13, BW=53.4KiB/s (54.7kB/s)(6028KiB/112927msec) clat (usec): min=38, max=238332, avg=41806.96, stdev=27703.19 lat (usec): min=38, max=238334, avg=41826.35, stdev=27699.93 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10552], 10.00th=[ 15664], 20.00th=[ 21365], | 30.00th=[ 26346], 40.00th=[ 30802], 50.00th=[ 35914], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 58459], 90.00th=[ 74974], 95.00th=[ 88605], | 99.00th=[139461], 99.50th=[168821], 99.90th=[233833], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 15, max= 119, per=25.19%, avg=53.15, stdev=18.59, samples=222 iops : min= 3, max= 29, avg=12.65, stdev= 4.71, samples=222 write: IOPS=13, BW=55.4KiB/s (56.8kB/s)(6260KiB/112927msec); 0 zone resets clat (usec): min=899, max=688150, avg=31787.50, stdev=35467.38 lat (usec): min=900, max=688154, avg=31791.56, stdev=35468.77 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1418], 10.00th=[ 1729], 20.00th=[ 3884], | 30.00th=[ 6915], 40.00th=[ 15533], 50.00th=[ 23725], 60.00th=[ 31327], | 70.00th=[ 40633], 80.00th=[ 54789], 90.00th=[ 76022], 95.00th=[ 91751], | 99.00th=[130548], 99.50th=[160433], 99.90th=[233833], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 7, max= 151, per=25.12%, avg=55.51, stdev=23.24, samples=221 iops : min= 1, max= 37, avg=13.23, stdev= 5.87, samples=221 lat (usec) : 50=0.23%, 100=1.53%, 250=0.13%, 500=0.03%, 1000=0.16% lat (msec) : 2=5.73%, 4=4.65%, 10=7.65%, 20=11.00%, 50=42.87% lat (msec) : 100=22.69%, 250=3.29%, 750=0.03% cpu : usr=0.09%, sys=5.46%, ctx=6707, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179504: Mon Aug 17 07:59:36 2026 read: IOPS=13, BW=53.3KiB/s (54.6kB/s)(6052KiB/113441msec) clat (usec): min=35, max=257553, avg=40964.80, stdev=27069.53 lat (usec): min=35, max=257554, avg=40974.80, stdev=27060.23 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 1696], 10.00th=[ 15664], 20.00th=[ 21103], | 30.00th=[ 25560], 40.00th=[ 30278], 50.00th=[ 35390], 60.00th=[ 41681], | 70.00th=[ 48497], 80.00th=[ 57934], 90.00th=[ 71828], 95.00th=[ 88605], | 99.00th=[145753], 99.50th=[166724], 99.90th=[231736], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 7, max= 111, per=25.19%, avg=53.16, stdev=20.03, samples=223 iops : min= 1, max= 27, avg=12.64, stdev= 5.07, samples=223 write: IOPS=13, BW=54.0KiB/s (56.3kB/s)(6236KiB/113441msec); 0 zone resets clat (usec): min=789, max=702658, avg=32890.88, stdev=37045.67 lat (usec): min=790, max=702660, avg=32894.01, stdev=37045.61 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1385], 10.00th=[ 1532], 20.00th=[ 3228], | 30.00th=[ 6980], 40.00th=[ 15795], 50.00th=[ 23987], 60.00th=[ 32113], | 70.00th=[ 42206], 80.00th=[ 56361], 90.00th=[ 77071], 95.00th=[ 96994], | 99.00th=[139461], 99.50th=[152044], 99.90th=[238027], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 7, max= 151, per=24.90%, avg=55.02, stdev=22.96, samples=222 iops : min= 1, max= 37, avg=13.11, stdev= 5.78, samples=222 lat (usec) : 50=0.23%, 100=1.92%, 250=0.16%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=7.42%, 4=4.43%, 10=5.86%, 20=10.51%, 50=42.61% lat (msec) : 100=22.92%, 250=3.61%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=5.40%, ctx=6500, 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=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=212KiB/s (217kB/s), 52.7KiB/s-53.6KiB/s (53.9kB/s-54.9kB/s), io=23.4MiB (24.6MB), run=111696-113441msec WRITE: bw=222KiB/s (227kB/s), 54.0KiB/s-56.4KiB/s (56.3kB/s-57.7kB/s), io=24.6MiB (25.7MB), run=111696-113441msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179496: Mon Aug 17 08:00:18 2026 read: IOPS=9, BW=38.4KiB/s (39.3kB/s)(5992KiB/155953msec) clat (msec): min=5, max=864, avg=40.01, stdev=38.72 lat (msec): min=5, max=864, avg=40.02, stdev=38.72 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 84], 95.00th=[ 107], | 99.00th=[ 161], 99.50th=[ 199], 99.90th=[ 245], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 126, per=25.01%, avg=38.27, stdev=24.16, samples=304 iops : min= 1, max= 31, avg= 8.89, stdev= 6.07, samples=304 write: IOPS=10, BW=40.4KiB/s (41.3kB/s)(6296KiB/155953msec); 0 zone resets clat (msec): min=11, max=387, avg=60.78, stdev=40.05 lat (msec): min=11, max=387, avg=60.78, stdev=40.05 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 49], 60.00th=[ 58], | 70.00th=[ 70], 80.00th=[ 86], 90.00th=[ 113], 95.00th=[ 136], | 99.00th=[ 205], 99.50th=[ 234], 99.90th=[ 296], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 7, max= 119, per=24.89%, avg=40.07, stdev=21.67, samples=305 iops : min= 1, max= 29, avg= 9.34, stdev= 5.43, samples=305 lat (msec) : 10=2.02%, 20=14.13%, 50=47.75%, 100=25.72%, 250=10.22% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.06%, sys=2.13%, ctx=4791, 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=179497: Mon Aug 17 08:00:18 2026 read: IOPS=9, BW=38.1KiB/s (39.0kB/s)(5940KiB/155809msec) clat (msec): min=4, max=858, avg=41.05, stdev=40.32 lat (msec): min=4, max=858, avg=41.05, stdev=40.32 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 58], 90.00th=[ 87], 95.00th=[ 111], | 99.00th=[ 171], 99.50th=[ 192], 99.90th=[ 271], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7, max= 151, per=25.21%, avg=38.58, stdev=24.91, samples=300 iops : min= 1, max= 37, avg= 8.97, stdev= 6.24, samples=300 write: IOPS=10, BW=40.7KiB/s (41.7kB/s)(6348KiB/155809msec); 0 zone resets clat (msec): min=11, max=284, avg=59.54, stdev=39.04 lat (msec): min=11, max=284, avg=59.54, stdev=39.04 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 68], 80.00th=[ 84], 90.00th=[ 111], 95.00th=[ 140], | 99.00th=[ 197], 99.50th=[ 213], 99.90th=[ 264], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 7, max= 112, per=25.21%, avg=40.59, stdev=22.05, samples=305 iops : min= 1, max= 28, avg= 9.47, stdev= 5.53, samples=305 lat (msec) : 10=1.92%, 20=13.74%, 50=48.89%, 100=25.29%, 250=9.96% lat (msec) : 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=2.13%, ctx=4878, 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=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=179498: Mon Aug 17 08:00:18 2026 read: IOPS=9, BW=38.7KiB/s (39.6kB/s)(6028KiB/155824msec) clat (msec): min=5, max=258, avg=39.89, stdev=32.75 lat (msec): min=5, max=258, avg=39.89, stdev=32.75 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 57], 90.00th=[ 85], 95.00th=[ 107], | 99.00th=[ 167], 99.50th=[ 192], 99.90th=[ 232], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 7, max= 135, per=25.33%, avg=38.76, stdev=22.72, samples=303 iops : min= 1, max= 33, avg= 9.01, stdev= 5.69, samples=303 write: IOPS=10, BW=40.2KiB/s (41.1kB/s)(6260KiB/155824msec); 0 zone resets clat (msec): min=13, max=884, avg=60.92, stdev=44.04 lat (msec): min=13, max=884, avg=60.92, stdev=44.04 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 42], 50.00th=[ 48], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 87], 90.00th=[ 110], 95.00th=[ 136], | 99.00th=[ 199], 99.50th=[ 220], 99.90th=[ 393], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 111, per=24.83%, avg=39.98, stdev=21.80, samples=305 iops : min= 1, max= 27, avg= 9.32, stdev= 5.48, samples=305 lat (msec) : 10=1.69%, 20=12.92%, 50=49.87%, 100=25.23%, 250=10.09% lat (msec) : 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=2.20%, ctx=4740, 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=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=179499: Mon Aug 17 08:00:18 2026 read: IOPS=9, BW=38.9KiB/s (39.8kB/s)(6052KiB/155521msec) clat (msec): min=5, max=270, avg=40.54, stdev=34.26 lat (msec): min=5, max=270, avg=40.54, stdev=34.26 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 85], 95.00th=[ 111], | 99.00th=[ 171], 99.50th=[ 201], 99.90th=[ 249], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 7, max= 118, per=25.47%, avg=38.97, stdev=22.58, samples=302 iops : min= 1, max= 29, avg= 9.06, stdev= 5.66, samples=302 write: IOPS=10, BW=40.1KiB/s (41.1kB/s)(6236KiB/155521msec); 0 zone resets clat (msec): min=9, max=875, avg=60.18, stdev=42.06 lat (msec): min=9, max=875, avg=60.19, stdev=42.06 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 49], 60.00th=[ 58], | 70.00th=[ 70], 80.00th=[ 85], 90.00th=[ 108], 95.00th=[ 136], | 99.00th=[ 180], 99.50th=[ 211], 99.90th=[ 321], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 119, per=24.77%, avg=39.88, stdev=21.69, samples=304 iops : min= 1, max= 29, avg= 9.29, stdev= 5.44, samples=304 lat (msec) : 10=1.73%, 20=13.38%, 50=48.80%, 100=26.14%, 250=9.77% lat (msec) : 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=2.18%, ctx=4713, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=154KiB/s (158kB/s), 38.1KiB/s-38.9KiB/s (39.0kB/s-39.8kB/s), io=23.4MiB (24.6MB), run=155521-155953msec WRITE: bw=161KiB/s (165kB/s), 40.1KiB/s-40.7KiB/s (41.1kB/s-41.7kB/s), io=24.6MiB (25.7MB), run=155521-155953msec 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=179548: Mon Aug 17 08:00:58 2026 read: IOPS=12, BW=194KiB/s (199kB/s)(5920KiB/30526msec) clat (usec): min=38, max=310978, avg=43025.82, stdev=31674.52 lat (usec): min=38, max=310980, avg=43027.91, stdev=31675.14 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 13829], 20.00th=[ 21365], | 30.00th=[ 27657], 40.00th=[ 33162], 50.00th=[ 38011], 60.00th=[ 44827], | 70.00th=[ 51643], 80.00th=[ 59507], 90.00th=[ 70779], 95.00th=[ 93848], | 99.00th=[166724], 99.50th=[191890], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 31, max= 413, per=24.96%, avg=193.45, stdev=80.86, samples=60 iops : min= 1, max= 25, avg=11.40, stdev= 5.10, samples=60 write: IOPS=13, BW=209KiB/s (214kB/s)(6368KiB/30526msec); 0 zone resets clat (usec): min=1380, max=298266, avg=36204.79, stdev=35513.49 lat (usec): min=1381, max=298269, avg=36206.92, stdev=35513.66 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 2024], 10.00th=[ 3064], 20.00th=[ 6063], | 30.00th=[ 10421], 40.00th=[ 19006], 50.00th=[ 26608], 60.00th=[ 35390], | 70.00th=[ 45876], 80.00th=[ 61604], 90.00th=[ 84411], 95.00th=[105382], | 99.00th=[141558], 99.50th=[170918], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 63, max= 411, per=25.60%, avg=208.60, stdev=80.23, samples=60 iops : min= 3, max= 25, avg=12.37, stdev= 5.06, samples=60 lat (usec) : 50=0.39%, 100=3.52%, 250=0.13% lat (msec) : 2=2.08%, 4=4.69%, 10=8.72%, 20=9.38%, 50=42.32% lat (msec) : 100=23.57%, 250=4.95%, 500=0.26% cpu : usr=0.06%, sys=5.52%, ctx=1710, 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=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=179550: Mon Aug 17 08:00:58 2026 read: IOPS=11, BW=186KiB/s (190kB/s)(5744KiB/30885msec) clat (usec): min=38, max=263451, avg=46151.12, stdev=32242.90 lat (usec): min=38, max=263452, avg=46152.21, stdev=32242.92 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 71], 10.00th=[ 15401], 20.00th=[ 24249], | 30.00th=[ 30016], 40.00th=[ 33817], 50.00th=[ 40109], 60.00th=[ 47449], | 70.00th=[ 55313], 80.00th=[ 62653], 90.00th=[ 80217], 95.00th=[107480], | 99.00th=[170918], 99.50th=[191890], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 31, max= 347, per=23.74%, avg=183.97, stdev=74.86, samples=60 iops : min= 1, max= 21, avg=10.82, stdev= 4.74, samples=60 write: IOPS=13, BW=212KiB/s (217kB/s)(6544KiB/30885msec); 0 zone resets clat (usec): min=1534, max=175351, avg=34509.94, stdev=33744.77 lat (usec): min=1535, max=175352, avg=34511.89, stdev=33744.78 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2245], 10.00th=[ 3195], 20.00th=[ 5932], | 30.00th=[ 10159], 40.00th=[ 18220], 50.00th=[ 25035], 60.00th=[ 33817], | 70.00th=[ 43779], 80.00th=[ 58983], 90.00th=[ 76022], 95.00th=[106431], | 99.00th=[149947], 99.50th=[164627], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 62, max= 601, per=25.45%, avg=207.38, stdev=96.42, samples=60 iops : min= 3, max= 37, avg=12.28, stdev= 6.02, samples=60 lat (usec) : 50=0.13%, 100=3.12%, 250=0.13%, 500=0.26%, 1000=0.13% lat (msec) : 2=1.82%, 4=4.95%, 10=8.98%, 20=9.90%, 50=40.62% lat (msec) : 100=24.35%, 250=5.47%, 500=0.13% cpu : usr=0.06%, sys=5.78%, ctx=1720, 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=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=179551: Mon Aug 17 08:00:58 2026 read: IOPS=12, BW=203KiB/s (208kB/s)(6256KiB/30844msec) clat (usec): min=51, max=195151, avg=43820.31, stdev=29856.82 lat (usec): min=52, max=195152, avg=43821.51, stdev=29856.85 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 64], 10.00th=[ 12780], 20.00th=[ 21890], | 30.00th=[ 27919], 40.00th=[ 34866], 50.00th=[ 39584], 60.00th=[ 45351], | 70.00th=[ 51643], 80.00th=[ 61604], 90.00th=[ 76022], 95.00th=[103285], | 99.00th=[152044], 99.50th=[166724], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 63, max= 411, per=26.19%, avg=202.98, stdev=78.83, samples=60 iops : min= 3, max= 25, avg=11.98, stdev= 5.05, samples=60 write: IOPS=12, BW=196KiB/s (200kB/s)(6032KiB/30844msec); 0 zone resets clat (usec): min=1655, max=290376, avg=36228.17, stdev=34600.75 lat (usec): min=1656, max=290377, avg=36230.17, stdev=34600.76 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2409], 10.00th=[ 3621], 20.00th=[ 7177], | 30.00th=[ 12780], 40.00th=[ 21103], 50.00th=[ 29492], 60.00th=[ 34866], | 70.00th=[ 44303], 80.00th=[ 58983], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[158335], 99.50th=[198181], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 63, max= 381, per=23.69%, avg=193.05, stdev=75.69, samples=60 iops : min= 3, max= 23, avg=11.37, stdev= 4.78, samples=60 lat (usec) : 100=4.17%, 250=0.13%, 750=0.13% lat (msec) : 2=1.82%, 4=3.78%, 10=7.68%, 20=9.11%, 50=44.53% lat (msec) : 100=23.57%, 250=4.95%, 500=0.13% cpu : usr=0.06%, sys=5.68%, ctx=1696, 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=179552: Mon Aug 17 08:00:58 2026 read: IOPS=12, BW=205KiB/s (210kB/s)(6032KiB/29433msec) clat (usec): min=43, max=238500, avg=41639.73, stdev=34025.06 lat (usec): min=44, max=238501, avg=41640.81, stdev=34025.09 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 61], 10.00th=[ 78], 20.00th=[ 19268], | 30.00th=[ 25822], 40.00th=[ 30278], 50.00th=[ 35390], 60.00th=[ 42730], | 70.00th=[ 49546], 80.00th=[ 60031], 90.00th=[ 79168], 95.00th=[ 96994], | 99.00th=[196084], 99.50th=[206570], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 63, max= 508, per=26.40%, avg=204.57, stdev=85.12, samples=58 iops : min= 3, max= 31, avg=12.09, stdev= 5.36, samples=58 write: IOPS=13, BW=213KiB/s (218kB/s)(6256KiB/29433msec); 0 zone resets clat (usec): min=1185, max=283922, avg=34532.30, stdev=35091.70 lat (usec): min=1186, max=283924, avg=34536.30, stdev=35093.31 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2024], 10.00th=[ 2933], 20.00th=[ 5735], | 30.00th=[ 9765], 40.00th=[ 17433], 50.00th=[ 25035], 60.00th=[ 32113], | 70.00th=[ 43254], 80.00th=[ 60031], 90.00th=[ 81265], 95.00th=[ 95945], | 99.00th=[143655], 99.50th=[208667], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 62, max= 437, per=26.10%, avg=212.69, stdev=86.87, samples=58 iops : min= 3, max= 27, avg=12.62, stdev= 5.47, samples=58 lat (usec) : 50=0.26%, 100=5.47%, 250=0.52% lat (msec) : 2=2.47%, 4=4.82%, 10=8.98%, 20=9.64%, 50=40.49% lat (msec) : 100=22.92%, 250=4.30%, 500=0.13% cpu : usr=0.08%, sys=5.53%, ctx=1579, 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=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=776KiB/s (794kB/s), 186KiB/s-205KiB/s (190kB/s-210kB/s), io=23.4MiB (24.5MB), run=29433-30885msec WRITE: bw=816KiB/s (836kB/s), 196KiB/s-213KiB/s (200kB/s-218kB/s), io=24.6MiB (25.8MB), run=29433-30885msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179545: Mon Aug 17 08:01:09 2026 read: IOPS=8, BW=141KiB/s (145kB/s)(5920KiB/41855msec) clat (msec): min=8, max=233, avg=45.26, stdev=38.98 lat (msec): min=8, max=233, avg=45.26, stdev=38.98 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 65], 90.00th=[ 97], 95.00th=[ 126], | 99.00th=[ 201], 99.50th=[ 232], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 31, max= 382, per=25.34%, avg=142.94, stdev=80.36, samples=81 iops : min= 1, max= 23, avg= 8.12, stdev= 5.10, samples=81 write: IOPS=9, BW=152KiB/s (156kB/s)(6368KiB/41855msec); 0 zone resets clat (msec): min=15, max=223, avg=62.53, stdev=38.88 lat (msec): min=15, max=223, avg=62.53, stdev=38.88 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 50], 60.00th=[ 57], | 70.00th=[ 71], 80.00th=[ 88], 90.00th=[ 118], 95.00th=[ 146], | 99.00th=[ 207], 99.50th=[ 224], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 411, per=26.25%, avg=155.94, stdev=83.54, samples=80 iops : min= 1, max= 25, avg= 8.94, stdev= 5.28, samples=80 lat (msec) : 10=0.39%, 20=11.07%, 50=50.13%, 100=25.78%, 250=12.63% cpu : usr=0.05%, sys=2.03%, ctx=1190, 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=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=179546: Mon Aug 17 08:01:09 2026 read: IOPS=8, BW=137KiB/s (140kB/s)(5744KiB/41948msec) clat (msec): min=7, max=194, avg=43.94, stdev=35.00 lat (msec): min=7, max=194, avg=43.94, stdev=35.00 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 51], 80.00th=[ 64], 90.00th=[ 96], 95.00th=[ 122], | 99.00th=[ 171], 99.50th=[ 190], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 31, max= 377, per=24.83%, avg=140.02, stdev=82.97, samples=81 iops : min= 1, max= 23, avg= 7.99, stdev= 5.30, samples=81 write: IOPS=9, BW=156KiB/s (160kB/s)(6544KiB/41948msec); 0 zone resets clat (msec): min=15, max=285, avg=63.49, stdev=41.26 lat (msec): min=15, max=285, avg=63.50, stdev=41.26 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 59], | 70.00th=[ 72], 80.00th=[ 87], 90.00th=[ 118], 95.00th=[ 153], | 99.00th=[ 211], 99.50th=[ 222], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 31, max= 352, per=26.18%, avg=155.53, stdev=80.72, samples=83 iops : min= 1, max= 22, avg= 8.95, stdev= 5.08, samples=83 lat (msec) : 10=0.52%, 20=11.07%, 50=46.61%, 100=29.56%, 250=12.11% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.05%, ctx=1203, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179547: Mon Aug 17 08:01:09 2026 read: IOPS=9, BW=148KiB/s (151kB/s)(6256KiB/42411msec) clat (msec): min=7, max=275, avg=43.78, stdev=36.13 lat (msec): min=7, max=275, avg=43.78, stdev=36.13 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 61], 90.00th=[ 94], 95.00th=[ 120], | 99.00th=[ 186], 99.50th=[ 197], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 576, per=26.25%, avg=148.06, stdev=102.40, samples=83 iops : min= 1, max= 36, avg= 8.45, stdev= 6.47, samples=83 write: IOPS=8, BW=142KiB/s (146kB/s)(6032KiB/42411msec); 0 zone resets clat (msec): min=15, max=259, avg=66.82, stdev=43.72 lat (msec): min=15, max=259, avg=66.83, stdev=43.72 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 63], | 70.00th=[ 80], 80.00th=[ 105], 90.00th=[ 134], 95.00th=[ 163], | 99.00th=[ 199], 99.50th=[ 220], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 31, max= 443, per=23.63%, avg=140.34, stdev=76.98, samples=83 iops : min= 1, max= 27, avg= 7.95, stdev= 4.85, samples=83 lat (msec) : 10=1.30%, 20=10.81%, 50=48.31%, 100=24.74%, 250=14.58% lat (msec) : 500=0.26% cpu : usr=0.07%, sys=2.11%, 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=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=179549: Mon Aug 17 08:01:09 2026 read: IOPS=9, BW=145KiB/s (148kB/s)(6032KiB/41629msec) clat (msec): min=6, max=290, avg=44.86, stdev=39.77 lat (msec): min=6, max=290, avg=44.86, stdev=39.77 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 49], 80.00th=[ 64], 90.00th=[ 94], 95.00th=[ 142], | 99.00th=[ 194], 99.50th=[ 197], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 447, per=25.78%, avg=145.41, stdev=89.22, samples=80 iops : min= 1, max= 27, avg= 8.28, stdev= 5.64, samples=80 write: IOPS=9, BW=150KiB/s (154kB/s)(6256KiB/41629msec); 0 zone resets clat (msec): min=14, max=291, avg=62.58, stdev=41.79 lat (msec): min=14, max=291, avg=62.59, stdev=41.80 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 49], 60.00th=[ 56], | 70.00th=[ 68], 80.00th=[ 89], 90.00th=[ 123], 95.00th=[ 155], | 99.00th=[ 224], 99.50th=[ 234], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 384, per=25.53%, avg=151.64, stdev=87.11, samples=80 iops : min= 1, max= 24, avg= 8.68, stdev= 5.51, samples=80 lat (msec) : 10=1.30%, 20=12.11%, 50=48.70%, 100=25.52%, 250=12.11% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=2.06%, ctx=1160, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=565KiB/s (578kB/s), 137KiB/s-148KiB/s (140kB/s-151kB/s), io=23.4MiB (24.5MB), run=41629-42411msec WRITE: bw=594KiB/s (608kB/s), 142KiB/s-156KiB/s (146kB/s-160kB/s), io=24.6MiB (25.8MB), run=41629-42411msec 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=179577: Mon Aug 17 08:01:24 2026 read: IOPS=1, BW=1439KiB/s (1474kB/s)(7168KiB/4980msec) clat (usec): min=582, max=333550, avg=131789.03, stdev=104650.12 lat (usec): min=584, max=333555, avg=131791.05, stdev=104651.43 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[ 70779], | 30.00th=[ 93848], 40.00th=[ 93848], 50.00th=[110625], 60.00th=[135267], | 70.00th=[135267], 80.00th=[177210], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 2027, max= 4675, per=100.00%, avg=3591.00, stdev=1387.72, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1028KiB/s (1053kB/s)(5120KiB/4980msec); 0 zone resets clat (msec): min=233, max=2253, avg=763.04, stdev=841.97 lat (msec): min=233, max=2253, avg=763.11, stdev=841.99 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 518], 80.00th=[ 518], 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= 2023, max= 3953, per=55.61%, avg=2667.67, stdev=1113.13, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=16.67%, 250=33.33%, 500=16.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.02%, sys=9.52%, ctx=271, 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=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=179578: Mon Aug 17 08:01:24 2026 read: IOPS=0, BW=343KiB/s (351kB/s)(2048KiB/5976msec) clat (msec): min=202, max=2431, avg=1317.09, stdev=1575.95 lat (msec): min=202, max=2431, avg=1317.09, stdev=1575.95 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 2433], | 70.00th=[ 2433], 80.00th=[ 2433], 90.00th=[ 2433], 95.00th=[ 2433], | 99.00th=[ 2433], 99.50th=[ 2433], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 2027, max= 2048, per=59.45%, avg=2037.50, stdev=14.85, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1714KiB/s (1755kB/s)(10.0MiB/5976msec); 0 zone resets clat (msec): min=103, max=709, avg=312.82, stdev=174.42 lat (msec): min=103, max=710, avg=313.15, stdev=174.49 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 153], | 30.00th=[ 184], 40.00th=[ 251], 50.00th=[ 275], 60.00th=[ 284], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 447], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 2027, max= 4087, per=67.33%, avg=3229.80, stdev=1095.43, samples=5 iops : min= 1, max= 3, avg= 2.20, stdev= 1.10, samples=5 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=12.02%, ctx=636, 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=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=179579: Mon Aug 17 08:01:24 2026 read: IOPS=1, BW=1134KiB/s (1161kB/s)(6144KiB/5418msec) clat (msec): min=65, max=2147, avg=552.57, stdev=787.37 lat (msec): min=65, max=2147, avg=552.57, stdev=787.37 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 266], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 2140], 95.00th=[ 2140], | 99.00th=[ 2140], 99.50th=[ 2140], 99.90th=[ 2140], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 1976, max= 4047, per=73.57%, avg=2521.25, stdev=1017.50, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1134KiB/s (1161kB/s)(6144KiB/5418msec); 0 zone resets clat (msec): min=140, max=682, avg=334.36, stdev=189.80 lat (msec): min=140, max=689, avg=335.67, stdev=192.44 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 262], 50.00th=[ 262], 60.00th=[ 266], | 70.00th=[ 405], 80.00th=[ 405], 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= 1818, max= 2955, per=45.14%, avg=2165.40, stdev=450.56, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=10.19%, ctx=193, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179580: Mon Aug 17 08:01:24 2026 read: IOPS=0, BW=882KiB/s (903kB/s)(5120KiB/5804msec) clat (usec): min=394, max=301005, avg=87396.64, stdev=132713.24 lat (usec): min=394, max=301006, avg=87397.36, stdev=132713.19 clat percentiles (usec): | 1.00th=[ 396], 5.00th=[ 396], 10.00th=[ 396], 20.00th=[ 396], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 775], 60.00th=[ 775], | 70.00th=[135267], 80.00th=[135267], 90.00th=[299893], 95.00th=[299893], | 99.00th=[299893], 99.50th=[299893], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 2027, max= 5456, per=100.00%, avg=3741.50, stdev=2424.67, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1235KiB/s (1265kB/s)(7168KiB/5804msec); 0 zone resets clat (msec): min=136, max=2503, avg=712.30, stdev=833.01 lat (msec): min=136, max=2504, avg=712.49, stdev=833.25 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 243], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 447], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 944], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 2023, max= 6131, per=74.28%, avg=3563.00, stdev=1964.99, samples=4 iops : min= 1, max= 5, avg= 2.50, stdev= 1.91, samples=4 lat (usec) : 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : 250=33.33%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.79%, ctx=177, 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=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=3427KiB/s (3509kB/s), 343KiB/s-1439KiB/s (351kB/s-1474kB/s), io=20.0MiB (20.0MB), run=4980-5976msec WRITE: bw=4798KiB/s (4913kB/s), 1028KiB/s-1714KiB/s (1053kB/s-1755kB/s), io=28.0MiB (29.4MB), run=4980-5976msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179581: Mon Aug 17 08:01:25 2026 read: IOPS=1, BW=1278KiB/s (1309kB/s)(7168KiB/5607msec) clat (msec): min=32, max=358, avg=185.75, stdev=118.11 lat (msec): min=32, max=358, avg=185.75, stdev=118.11 clat percentiles (msec): | 1.00th=[ 33], 5.00th=[ 33], 10.00th=[ 33], 20.00th=[ 103], | 30.00th=[ 114], 40.00th=[ 114], 50.00th=[ 157], 60.00th=[ 226], | 70.00th=[ 226], 80.00th=[ 313], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 1822, max= 3984, per=100.00%, avg=3185.33, stdev=1186.46, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=913KiB/s (935kB/s)(5120KiB/5607msec); 0 zone resets clat (msec): min=208, max=2189, avg=808.56, stdev=807.59 lat (msec): min=208, max=2189, avg=808.78, stdev=807.59 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 209], | 30.00th=[ 266], 40.00th=[ 266], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 2031, max= 3984, per=61.52%, avg=2683.33, stdev=1126.41, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 50=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=4.08%, ctx=119, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179582: Mon Aug 17 08:01:25 2026 read: IOPS=0, BW=312KiB/s (319kB/s)(2048KiB/6572msec) clat (msec): min=107, max=2442, avg=1275.33, stdev=1651.03 lat (msec): min=107, max=2442, avg=1275.33, stdev=1651.03 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 108], | 30.00th=[ 108], 40.00th=[ 108], 50.00th=[ 108], 60.00th=[ 2433], | 70.00th=[ 2433], 80.00th=[ 2433], 90.00th=[ 2433], 95.00th=[ 2433], | 99.00th=[ 2433], 99.50th=[ 2433], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 2023, max= 2031, per=65.05%, avg=2027.00, stdev= 5.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1558KiB/s (1596kB/s)(10.0MiB/6572msec); 0 zone resets clat (msec): min=76, max=892, avg=377.15, stdev=260.78 lat (msec): min=76, max=892, avg=377.25, stdev=260.80 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 113], | 30.00th=[ 121], 40.00th=[ 247], 50.00th=[ 305], 60.00th=[ 363], | 70.00th=[ 514], 80.00th=[ 542], 90.00th=[ 609], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 1875, max= 4015, per=53.38%, avg=2328.50, stdev=828.39, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=16.67%, 750=25.00%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=4.02%, ctx=98, 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=179583: Mon Aug 17 08:01:25 2026 read: IOPS=0, BW=977KiB/s (1001kB/s)(6144KiB/6286msec) clat (msec): min=80, max=572, avg=196.21, stdev=189.62 lat (msec): min=80, max=572, avg=196.21, stdev=189.62 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 89], | 30.00th=[ 89], 40.00th=[ 94], 50.00th=[ 94], 60.00th=[ 148], | 70.00th=[ 194], 80.00th=[ 194], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1921, max= 4047, per=80.31%, avg=2502.50, stdev=1030.81, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=977KiB/s (1001kB/s)(6144KiB/6286msec); 0 zone resets clat (msec): min=111, max=2306, avg=781.26, stdev=805.48 lat (msec): min=112, max=2306, avg=781.65, stdev=805.42 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 134], | 30.00th=[ 134], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 743], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 1875, max= 4063, per=68.46%, avg=2986.25, stdev=1216.71, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 750=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.06%, sys=3.69%, ctx=119, 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=179584: Mon Aug 17 08:01:25 2026 read: IOPS=0, BW=781KiB/s (800kB/s)(5120KiB/6555msec) clat (msec): min=76, max=642, avg=311.75, stdev=277.68 lat (msec): min=76, max=642, avg=311.75, stdev=277.68 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 78], | 30.00th=[ 106], 40.00th=[ 106], 50.00th=[ 150], 60.00th=[ 150], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1921, max= 6071, per=100.00%, avg=3996.00, stdev=2934.49, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1094KiB/s (1120kB/s)(7168KiB/6555msec); 0 zone resets clat (msec): min=113, max=2677, avg=698.33, stdev=902.00 lat (msec): min=113, max=2677, avg=698.44, stdev=902.00 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 218], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 313], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 785], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 1875, max= 4063, per=57.20%, avg=2495.00, stdev=1047.66, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=8.33%, 750=25.00%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.73%, ctx=90, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3116KiB/s (3191kB/s), 312KiB/s-1278KiB/s (319kB/s-1309kB/s), io=20.0MiB (20.0MB), run=5607-6572msec WRITE: bw=4363KiB/s (4467kB/s), 913KiB/s-1558KiB/s (935kB/s-1596kB/s), io=28.0MiB (29.4MB), run=5607-6572msec 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=179591: Mon Aug 17 08:01:39 2026 read: IOPS=1, BW=4953KiB/s (5072kB/s)(12.0MiB/2481msec) clat (msec): min=736, max=853, avg=794.56, stdev=58.55 lat (msec): min=736, max=853, avg=794.56, stdev=58.55 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 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= 7585, max= 8159, per=100.00%, avg=7872.00, stdev=405.88, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=12.42%, ctx=371, 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=179592: Mon Aug 17 08:01:39 2026 read: IOPS=0, BW=1202KiB/s (1231kB/s)(4096KiB/3407msec) clat (nsec): min=727452k, max=727452k, avg=727451858.00, stdev= 0.00 lat (nsec): min=727455k, max=727455k, avg=727455483.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2404KiB/s (2462kB/s)(8192KiB/3407msec); 0 zone resets clat (msec): min=1257, max=1360, avg=1308.96, stdev=72.95 lat (msec): min=1257, max=1360, avg=1309.36, stdev=72.89 clat percentiles (msec): | 1.00th=[ 1250], 5.00th=[ 1250], 10.00th=[ 1250], 20.00th=[ 1250], | 30.00th=[ 1250], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1368], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7984, max= 7984, per=83.02%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.20%, ctx=106, 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=179594: Mon Aug 17 08:01:39 2026 write: IOPS=0, BW=4043KiB/s (4140kB/s)(12.0MiB/3039msec); 0 zone resets clat (msec): min=256, max=1415, avg=990.86, stdev=638.95 lat (msec): min=256, max=1417, avg=991.80, stdev=639.46 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7831, max= 8094, per=82.80%, avg=7962.50, stdev=185.97, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.16%, ctx=34, 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=179595: Mon Aug 17 08:01:39 2026 write: IOPS=1, BW=4435KiB/s (4541kB/s)(12.0MiB/2771msec); 0 zone resets clat (msec): min=636, max=1197, avg=896.71, stdev=282.77 lat (msec): min=637, max=1198, avg=897.16, stdev=282.68 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7984, max= 8159, per=83.93%, avg=8071.50, stdev=123.74, 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=3.68%, ctx=40, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4809KiB/s (4924kB/s), 1202KiB/s-4953KiB/s (1231kB/s-5072kB/s), io=16.0MiB (16.8MB), run=2481-3407msec WRITE: bw=9618KiB/s (9849kB/s), 2404KiB/s-4435KiB/s (2462kB/s-4541kB/s), io=32.0MiB (33.6MB), run=2771-3407msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179596: Mon Aug 17 08:01:39 2026 read: IOPS=1, BW=5044KiB/s (5165kB/s)(12.0MiB/2436msec) clat (msec): min=525, max=1081, avg=785.68, stdev=279.71 lat (msec): min=525, max=1081, avg=785.68, stdev=279.71 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8110, max= 8126, per=100.00%, avg=8118.00, stdev=11.31, 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=3.66%, ctx=44, 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=179597: Mon Aug 17 08:01:39 2026 read: IOPS=0, BW=1209KiB/s (1238kB/s)(4096KiB/3387msec) clat (nsec): min=2205.5M, max=2205.5M, avg=2205523182.00, stdev= 0.00 lat (nsec): min=2205.5M, max=2205.5M, avg=2205526001.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2198], 5.00th=[ 2198], 10.00th=[ 2198], 20.00th=[ 2198], | 30.00th=[ 2198], 40.00th=[ 2198], 50.00th=[ 2198], 60.00th=[ 2198], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7892, max= 7892, per=100.00%, avg=7892.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2419KiB/s (2477kB/s)(8192KiB/3387msec); 0 zone resets clat (msec): min=213, max=820, avg=516.64, stdev=429.11 lat (msec): min=213, max=820, avg=517.04, stdev=429.22 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 213], 60.00th=[ 818], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7892, max= 7892, per=81.58%, avg=7892.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.72%, ctx=51, 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=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=179598: Mon Aug 17 08:01:39 2026 write: IOPS=0, BW=3721KiB/s (3811kB/s)(12.0MiB/3302msec); 0 zone resets clat (msec): min=266, max=1934, avg=1076.68, stdev=835.30 lat (msec): min=266, max=1936, avg=1077.41, stdev=835.77 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 1028], 50.00th=[ 1028], 60.00th=[ 1028], | 70.00th=[ 1938], 80.00th=[ 1938], 90.00th=[ 1938], 95.00th=[ 1938], | 99.00th=[ 1938], 99.50th=[ 1938], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 8110, max= 8110, per=83.83%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.54%, ctx=43, 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=179599: Mon Aug 17 08:01:39 2026 write: IOPS=1, BW=4333KiB/s (4437kB/s)(12.0MiB/2836msec); 0 zone resets clat (msec): min=355, max=1229, avg=925.34, stdev=494.25 lat (msec): min=355, max=1230, avg=926.37, stdev=494.64 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7892, max= 7892, per=81.58%, avg=7892.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.39%, ctx=34, 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=4837KiB/s (4953kB/s), 1209KiB/s-5044KiB/s (1238kB/s-5165kB/s), io=16.0MiB (16.8MB), run=2436-3387msec WRITE: bw=9675KiB/s (9907kB/s), 2419KiB/s-4333KiB/s (2477kB/s-4437kB/s), io=32.0MiB (33.6MB), run=2836-3387msec