== sanity test 398b: DIO and buffer IO race ============== 16:55:13 (1787864113) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.98558 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=145851: Thu Aug 27 16:57:19 2026 read: IOPS=14, BW=56.7KiB/s (58.1kB/s)(5992KiB/105615msec) clat (usec): min=32, max=547383, avg=33507.21, stdev=29021.77 lat (usec): min=32, max=547384, avg=33510.97, stdev=29022.03 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 60], 10.00th=[ 117], 20.00th=[ 15533], | 30.00th=[ 20055], 40.00th=[ 23987], 50.00th=[ 28181], 60.00th=[ 33817], | 70.00th=[ 40633], 80.00th=[ 49546], 90.00th=[ 63701], 95.00th=[ 76022], | 99.00th=[112722], 99.50th=[129500], 99.90th=[312476], 99.95th=[549454], | 99.99th=[549454] bw ( KiB/s): min= 7, max= 127, per=25.21%, avg=56.47, stdev=22.56, samples=208 iops : min= 1, max= 31, avg=13.50, stdev= 5.65, samples=208 write: IOPS=14, BW=59.6KiB/s (61.0kB/s)(6296KiB/105615msec); 0 zone resets clat (usec): min=920, max=868498, avg=34924.11, stdev=40858.91 lat (usec): min=921, max=868499, avg=34926.90, stdev=40858.85 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1319], 10.00th=[ 1991], 20.00th=[ 4080], | 30.00th=[ 8225], 40.00th=[ 15664], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 45876], 80.00th=[ 58983], 90.00th=[ 80217], 95.00th=[100140], | 99.00th=[143655], 99.50th=[204473], 99.90th=[263193], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 7, max= 127, per=25.50%, avg=59.92, stdev=22.79, samples=206 iops : min= 1, max= 31, avg=14.36, stdev= 5.72, samples=206 lat (usec) : 50=0.59%, 100=3.97%, 250=0.68%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=5.24%, 4=5.01%, 10=7.42%, 20=13.96%, 50=40.01% lat (msec) : 100=19.60%, 250=3.06%, 500=0.13%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=6.18%, ctx=6738, 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=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=145852: Thu Aug 27 16:57:19 2026 read: IOPS=13, BW=55.8KiB/s (57.1kB/s)(5940KiB/106502msec) clat (usec): min=33, max=927706, avg=36023.19, stdev=36751.97 lat (usec): min=34, max=927708, avg=36024.43, stdev=36752.01 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 9896], 20.00th=[ 16450], | 30.00th=[ 21103], 40.00th=[ 24773], 50.00th=[ 28967], 60.00th=[ 35390], | 70.00th=[ 43779], 80.00th=[ 52167], 90.00th=[ 66323], 95.00th=[ 80217], | 99.00th=[129500], 99.50th=[185598], 99.90th=[379585], 99.95th=[926942], | 99.99th=[926942] bw ( KiB/s): min= 7, max= 127, per=24.82%, avg=55.61, stdev=21.24, samples=208 iops : min= 1, max= 31, avg=13.27, stdev= 5.29, samples=208 write: IOPS=14, BW=59.6KiB/s (61.0kB/s)(6348KiB/106502msec); 0 zone resets clat (usec): min=994, max=628216, avg=33101.04, stdev=35916.02 lat (usec): min=995, max=628217, avg=33106.44, stdev=35916.74 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1287], 10.00th=[ 1876], 20.00th=[ 4080], | 30.00th=[ 7177], 40.00th=[ 15533], 50.00th=[ 24511], 60.00th=[ 33424], | 70.00th=[ 43779], 80.00th=[ 57934], 90.00th=[ 77071], 95.00th=[ 94897], | 99.00th=[139461], 99.50th=[154141], 99.90th=[299893], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 7, max= 151, per=25.35%, avg=59.57, stdev=22.92, samples=207 iops : min= 1, max= 37, avg=14.27, stdev= 5.73, samples=207 lat (usec) : 50=0.42%, 100=3.12%, 250=0.55%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.10% lat (msec) : 2=5.47%, 4=4.65%, 10=8.17%, 20=13.61%, 50=39.81% lat (msec) : 100=20.77%, 250=2.83%, 500=0.16%, 750=0.03%, 1000=0.03% cpu : usr=0.09%, sys=6.15%, ctx=6698, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145855: Thu Aug 27 16:57:19 2026 read: IOPS=14, BW=57.5KiB/s (58.9kB/s)(6028KiB/104822msec) clat (usec): min=30, max=280349, avg=33290.76, stdev=25473.01 lat (usec): min=30, max=280351, avg=33293.31, stdev=25473.40 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 61], 10.00th=[ 161], 20.00th=[ 16581], | 30.00th=[ 20579], 40.00th=[ 24249], 50.00th=[ 28705], 60.00th=[ 34341], | 70.00th=[ 40633], 80.00th=[ 49546], 90.00th=[ 62653], 95.00th=[ 73925], | 99.00th=[104334], 99.50th=[127402], 99.90th=[256902], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 126, per=25.80%, avg=57.78, stdev=22.74, samples=204 iops : min= 1, max= 31, avg=13.83, stdev= 5.70, samples=204 write: IOPS=14, BW=59.7KiB/s (61.2kB/s)(6260KiB/104822msec); 0 zone resets clat (usec): min=952, max=931171, avg=34636.15, stdev=43080.22 lat (usec): min=953, max=931172, avg=34638.83, stdev=43080.99 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1336], 10.00th=[ 2024], 20.00th=[ 4080], | 30.00th=[ 7635], 40.00th=[ 15926], 50.00th=[ 25035], 60.00th=[ 33424], | 70.00th=[ 43779], 80.00th=[ 56886], 90.00th=[ 80217], 95.00th=[101188], | 99.00th=[158335], 99.50th=[200279], 99.90th=[425722], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 6, max= 127, per=25.26%, avg=59.35, stdev=22.18, samples=206 iops : min= 1, max= 31, avg=14.22, stdev= 5.56, samples=206 lat (usec) : 50=0.72%, 100=3.91%, 250=0.46%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=4.95%, 4=5.11%, 10=7.42%, 20=13.90%, 50=41.21% lat (msec) : 100=18.55%, 250=3.22%, 500=0.20%, 1000=0.03% cpu : usr=0.08%, sys=6.21%, ctx=6618, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145857: Thu Aug 27 16:57:19 2026 read: IOPS=14, BW=56.6KiB/s (57.9kB/s)(6052KiB/106970msec) clat (usec): min=33, max=274298, avg=34117.98, stdev=28876.76 lat (usec): min=33, max=274300, avg=34120.53, stdev=28877.05 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 61], 10.00th=[ 145], 20.00th=[ 16057], | 30.00th=[ 20317], 40.00th=[ 24249], 50.00th=[ 28443], 60.00th=[ 34341], | 70.00th=[ 40633], 80.00th=[ 47973], 90.00th=[ 64226], 95.00th=[ 78119], | 99.00th=[154141], 99.50th=[196084], 99.90th=[270533], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 7, max= 111, per=25.17%, avg=56.39, stdev=22.17, samples=209 iops : min= 1, max= 27, avg=13.48, stdev= 5.57, samples=209 write: IOPS=14, BW=58.3KiB/s (59.7kB/s)(6236KiB/106970msec); 0 zone resets clat (usec): min=927, max=936292, avg=35204.02, stdev=41239.03 lat (usec): min=927, max=936293, avg=35208.01, stdev=41247.16 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1401], 10.00th=[ 2114], 20.00th=[ 3982], | 30.00th=[ 8717], 40.00th=[ 18220], 50.00th=[ 27657], 60.00th=[ 35390], | 70.00th=[ 45876], 80.00th=[ 58983], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[149947], 99.50th=[173016], 99.90th=[308282], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 7, max= 112, per=24.78%, avg=58.22, stdev=21.73, samples=209 iops : min= 1, max= 28, avg=13.94, stdev= 5.44, samples=209 lat (usec) : 50=0.42%, 100=4.00%, 250=0.62%, 500=0.10%, 1000=0.10% lat (msec) : 2=4.82%, 4=5.44%, 10=6.51%, 20=13.35%, 50=42.61% lat (msec) : 100=18.46%, 250=3.32%, 500=0.23%, 1000=0.03% cpu : usr=0.10%, sys=5.92%, ctx=6664, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=224KiB/s (230kB/s), 55.8KiB/s-57.5KiB/s (57.1kB/s-58.9kB/s), io=23.4MiB (24.6MB), run=104822-106970msec WRITE: bw=235KiB/s (241kB/s), 58.3KiB/s-59.7KiB/s (59.7kB/s-61.2kB/s), io=24.6MiB (25.7MB), run=104822-106970msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145853: Thu Aug 27 16:59:06 2026 read: IOPS=7, BW=28.0KiB/s (28.7kB/s)(5992KiB/213922msec) clat (msec): min=5, max=1023, avg=27.66, stdev=38.05 lat (msec): min=5, max=1023, avg=27.67, stdev=38.05 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 26], 80.00th=[ 37], 90.00th=[ 62], 95.00th=[ 85], | 99.00th=[ 131], 99.50th=[ 157], 99.90th=[ 380], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 111, per=26.87%, avg=30.10, stdev=21.22, samples=387 iops : min= 1, max= 27, avg= 6.93, stdev= 5.36, samples=387 write: IOPS=7, BW=29.4KiB/s (30.1kB/s)(6296KiB/213922msec); 0 zone resets clat (msec): min=31, max=677, avg=109.31, stdev=56.50 lat (msec): min=31, max=677, avg=109.32, stdev=56.50 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 50], 10.00th=[ 55], 20.00th=[ 66], | 30.00th=[ 77], 40.00th=[ 85], 50.00th=[ 94], 60.00th=[ 106], | 70.00th=[ 124], 80.00th=[ 146], 90.00th=[ 188], 95.00th=[ 220], | 99.00th=[ 292], 99.50th=[ 334], 99.90th=[ 456], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 71, per=24.91%, avg=29.15, stdev=13.57, samples=419 iops : min= 1, max= 17, avg= 6.68, stdev= 3.47, samples=419 lat (msec) : 10=7.55%, 20=22.10%, 50=14.94%, 100=31.51%, 250=22.62% lat (msec) : 500=1.20%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.36%, ctx=5431, 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=145854: Thu Aug 27 16:59:06 2026 read: IOPS=6, BW=27.8KiB/s (28.4kB/s)(5940KiB/214046msec) clat (msec): min=5, max=954, avg=27.29, stdev=38.44 lat (msec): min=5, max=954, avg=27.29, stdev=38.44 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 36], 90.00th=[ 59], 95.00th=[ 85], | 99.00th=[ 159], 99.50th=[ 197], 99.90th=[ 317], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 119, per=27.14%, avg=30.40, stdev=21.61, samples=380 iops : min= 1, max= 29, avg= 7.01, stdev= 5.43, samples=380 write: IOPS=7, BW=29.7KiB/s (30.4kB/s)(6348KiB/214046msec); 0 zone resets clat (msec): min=32, max=552, avg=109.08, stdev=54.85 lat (msec): min=32, max=552, avg=109.08, stdev=54.85 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 51], 10.00th=[ 57], 20.00th=[ 67], | 30.00th=[ 75], 40.00th=[ 85], 50.00th=[ 94], 60.00th=[ 107], | 70.00th=[ 124], 80.00th=[ 146], 90.00th=[ 180], 95.00th=[ 222], | 99.00th=[ 292], 99.50th=[ 330], 99.90th=[ 443], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 64, per=25.03%, avg=29.29, stdev=13.62, samples=420 iops : min= 1, max= 16, avg= 6.72, stdev= 3.47, samples=420 lat (msec) : 10=9.11%, 20=21.19%, 50=14.36%, 100=30.37%, 250=23.47% lat (msec) : 500=1.43%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.33%, ctx=5366, 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=145856: Thu Aug 27 16:59:06 2026 read: IOPS=7, BW=28.3KiB/s (29.0kB/s)(6028KiB/212832msec) clat (msec): min=4, max=225, avg=27.66, stdev=26.56 lat (msec): min=4, max=225, avg=27.66, stdev=26.55 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 42], 90.00th=[ 63], 95.00th=[ 84], | 99.00th=[ 132], 99.50th=[ 144], 99.90th=[ 176], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 7, max= 119, per=26.70%, avg=29.90, stdev=21.22, samples=392 iops : min= 1, max= 29, avg= 6.87, stdev= 5.36, samples=392 write: IOPS=7, BW=29.4KiB/s (30.1kB/s)(6260KiB/212832msec); 0 zone resets clat (msec): min=31, max=964, avg=109.08, stdev=60.37 lat (msec): min=31, max=964, avg=109.08, stdev=60.37 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 50], 10.00th=[ 56], 20.00th=[ 67], | 30.00th=[ 74], 40.00th=[ 83], 50.00th=[ 93], 60.00th=[ 106], | 70.00th=[ 124], 80.00th=[ 146], 90.00th=[ 180], 95.00th=[ 209], | 99.00th=[ 309], 99.50th=[ 355], 99.90th=[ 676], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 63, per=24.73%, avg=28.93, stdev=13.92, samples=420 iops : min= 1, max= 15, avg= 6.63, stdev= 3.54, samples=420 lat (msec) : 10=7.10%, 20=22.17%, 50=15.20%, 100=31.64%, 250=22.62% lat (msec) : 500=1.20%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=1.37%, ctx=5420, 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=145858: Thu Aug 27 16:59:06 2026 read: IOPS=7, BW=28.6KiB/s (29.2kB/s)(6052KiB/211909msec) clat (msec): min=5, max=255, avg=26.90, stdev=27.45 lat (msec): min=5, max=255, avg=26.90, stdev=27.45 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 27], 80.00th=[ 37], 90.00th=[ 61], 95.00th=[ 82], | 99.00th=[ 146], 99.50th=[ 163], 99.90th=[ 236], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 7, max= 119, per=27.31%, avg=30.58, stdev=20.81, samples=385 iops : min= 1, max= 29, avg= 7.05, stdev= 5.25, samples=385 write: IOPS=7, BW=29.4KiB/s (30.1kB/s)(6236KiB/211909msec); 0 zone resets clat (msec): min=32, max=1061, avg=109.55, stdev=59.06 lat (msec): min=32, max=1061, avg=109.55, stdev=59.06 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 52], 10.00th=[ 58], 20.00th=[ 67], | 30.00th=[ 75], 40.00th=[ 84], 50.00th=[ 94], 60.00th=[ 108], | 70.00th=[ 125], 80.00th=[ 148], 90.00th=[ 182], 95.00th=[ 209], | 99.00th=[ 296], 99.50th=[ 321], 99.90th=[ 558], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 71, per=24.87%, avg=29.10, stdev=13.34, samples=416 iops : min= 1, max= 17, avg= 6.67, stdev= 3.40, samples=416 lat (msec) : 10=8.11%, 20=21.68%, 50=14.88%, 100=30.83%, 250=23.40% lat (msec) : 500=1.04%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.37%, ctx=5401, 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=112KiB/s (115kB/s), 27.8KiB/s-28.6KiB/s (28.4kB/s-29.2kB/s), io=23.4MiB (24.6MB), run=211909-214046msec WRITE: bw=117KiB/s (120kB/s), 29.4KiB/s-29.7KiB/s (30.1kB/s-30.4kB/s), io=24.6MiB (25.7MB), run=211909-214046msec 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=145906: Thu Aug 27 16:59:37 2026 read: IOPS=17, BW=278KiB/s (284kB/s)(5920KiB/21319msec) clat (usec): min=37, max=112726, avg=29434.92, stdev=21579.59 lat (usec): min=38, max=112727, avg=29442.15, stdev=21571.76 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 60], 10.00th=[ 69], 20.00th=[ 194], | 30.00th=[ 18744], 40.00th=[ 23987], 50.00th=[ 29492], 60.00th=[ 34341], | 70.00th=[ 40633], 80.00th=[ 47449], 90.00th=[ 56886], 95.00th=[ 65274], | 99.00th=[ 88605], 99.50th=[105382], 99.90th=[112722], 99.95th=[112722], | 99.99th=[112722] bw ( KiB/s): min= 126, max= 506, per=25.56%, avg=269.15, stdev=85.11, samples=41 iops : min= 7, max= 31, avg=16.07, stdev= 5.33, samples=41 write: IOPS=18, BW=299KiB/s (306kB/s)(6368KiB/21319msec); 0 zone resets clat (usec): min=1450, max=194089, avg=26119.43, stdev=26681.98 lat (usec): min=1451, max=194091, avg=26137.21, stdev=26677.36 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2147], 10.00th=[ 3032], 20.00th=[ 4752], | 30.00th=[ 6980], 40.00th=[ 10159], 50.00th=[ 15533], 60.00th=[ 23987], | 70.00th=[ 33817], 80.00th=[ 46924], 90.00th=[ 62129], 95.00th=[ 79168], | 99.00th=[107480], 99.50th=[141558], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 159, max= 573, per=26.68%, avg=295.63, stdev=89.14, samples=41 iops : min= 9, max= 35, avg=17.73, stdev= 5.61, samples=41 lat (usec) : 50=1.04%, 100=7.16%, 250=1.56%, 500=0.26% lat (msec) : 2=2.34%, 4=6.51%, 10=12.24%, 20=14.32%, 50=37.63% lat (msec) : 100=15.89%, 250=1.04% cpu : usr=0.08%, sys=8.91%, ctx=1541, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145907: Thu Aug 27 16:59:37 2026 read: IOPS=16, BW=260KiB/s (266kB/s)(5744KiB/22122msec) clat (usec): min=37, max=146263, avg=30560.44, stdev=23427.20 lat (usec): min=37, max=146264, avg=30565.44, stdev=23428.34 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 62], 10.00th=[ 77], 20.00th=[ 12780], | 30.00th=[ 19792], 40.00th=[ 23987], 50.00th=[ 27919], 60.00th=[ 32375], | 70.00th=[ 37487], 80.00th=[ 46400], 90.00th=[ 60031], 95.00th=[ 71828], | 99.00th=[108528], 99.50th=[123208], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 108, max= 383, per=24.58%, avg=258.84, stdev=63.42, samples=43 iops : min= 6, max= 23, avg=15.42, stdev= 3.98, samples=43 write: IOPS=18, BW=296KiB/s (303kB/s)(6544KiB/22122msec); 0 zone resets clat (usec): min=1505, max=166868, avg=27155.56, stdev=27124.33 lat (usec): min=1507, max=166870, avg=27159.84, stdev=27123.11 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2147], 10.00th=[ 2933], 20.00th=[ 4817], | 30.00th=[ 7177], 40.00th=[ 12256], 50.00th=[ 18220], 60.00th=[ 25297], | 70.00th=[ 35390], 80.00th=[ 49546], 90.00th=[ 64750], 95.00th=[ 80217], | 99.00th=[111674], 99.50th=[143655], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 95, max= 535, per=26.53%, avg=293.93, stdev=96.16, samples=43 iops : min= 5, max= 33, avg=17.65, stdev= 6.08, samples=43 lat (usec) : 50=0.52%, 100=5.60%, 250=1.56%, 500=0.39%, 1000=0.13% lat (msec) : 2=2.47%, 4=5.34%, 10=12.24%, 20=14.19%, 50=39.58% lat (msec) : 100=16.15%, 250=1.82% cpu : usr=0.09%, sys=8.31%, ctx=1519, 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=145908: Thu Aug 27 16:59:37 2026 read: IOPS=17, BW=287KiB/s (294kB/s)(6256KiB/21813msec) clat (usec): min=39, max=260212, avg=30012.37, stdev=26221.54 lat (usec): min=39, max=260212, avg=30024.39, stdev=26225.21 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 59], 10.00th=[ 69], 20.00th=[ 133], | 30.00th=[ 18482], 40.00th=[ 25035], 50.00th=[ 28705], 60.00th=[ 32900], | 70.00th=[ 38536], 80.00th=[ 47449], 90.00th=[ 55837], 95.00th=[ 68682], | 99.00th=[121111], 99.50th=[128451], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 93, max= 542, per=27.37%, avg=288.24, stdev=98.65, samples=42 iops : min= 5, max= 33, avg=17.26, stdev= 6.20, samples=42 write: IOPS=17, BW=277KiB/s (283kB/s)(6032KiB/21813msec); 0 zone resets clat (usec): min=1418, max=264727, avg=26609.93, stdev=27948.05 lat (usec): min=1420, max=264729, avg=26634.32, stdev=27957.13 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2376], 10.00th=[ 3523], 20.00th=[ 5342], | 30.00th=[ 7635], 40.00th=[ 11600], 50.00th=[ 18482], 60.00th=[ 24511], | 70.00th=[ 31327], 80.00th=[ 46924], 90.00th=[ 61604], 95.00th=[ 76022], | 99.00th=[117965], 99.50th=[141558], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 124, max= 415, per=24.69%, avg=273.55, stdev=79.95, samples=42 iops : min= 7, max= 25, avg=16.33, stdev= 5.00, samples=42 lat (usec) : 50=1.17%, 100=7.68%, 250=2.08%, 500=0.52%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=1.82%, 4=5.60%, 10=11.33%, 20=12.37%, 50=39.84% lat (msec) : 100=15.36%, 250=1.69%, 500=0.26% cpu : usr=0.10%, sys=8.09%, ctx=1599, 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=145909: Thu Aug 27 16:59:37 2026 read: IOPS=16, BW=265KiB/s (272kB/s)(6032KiB/22742msec) clat (usec): min=38, max=109179, avg=31066.10, stdev=21725.77 lat (usec): min=39, max=109180, avg=31069.42, stdev=21722.87 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 65], 10.00th=[ 76], 20.00th=[ 14091], | 30.00th=[ 21627], 40.00th=[ 25560], 50.00th=[ 29230], 60.00th=[ 35390], | 70.00th=[ 40633], 80.00th=[ 47973], 90.00th=[ 58459], 95.00th=[ 68682], | 99.00th=[103285], 99.50th=[108528], 99.90th=[109577], 99.95th=[109577], | 99.99th=[109577] bw ( KiB/s): min= 86, max= 640, per=25.07%, avg=263.95, stdev=106.61, samples=44 iops : min= 5, max= 40, avg=15.77, stdev= 6.76, samples=44 write: IOPS=17, BW=275KiB/s (282kB/s)(6256KiB/22742msec); 0 zone resets clat (usec): min=1401, max=224584, avg=28066.14, stdev=31694.00 lat (usec): min=1401, max=224587, avg=28071.79, stdev=31691.63 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 2040], 10.00th=[ 2999], 20.00th=[ 4490], | 30.00th=[ 6259], 40.00th=[ 10028], 50.00th=[ 17695], 60.00th=[ 27132], | 70.00th=[ 35914], 80.00th=[ 45876], 90.00th=[ 63177], 95.00th=[ 88605], | 99.00th=[147850], 99.50th=[217056], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 31, max= 480, per=24.74%, avg=274.09, stdev=103.32, samples=44 iops : min= 1, max= 30, avg=16.41, stdev= 6.56, samples=44 lat (usec) : 50=0.39%, 100=6.25%, 250=1.17%, 500=0.78%, 750=0.13% lat (msec) : 2=2.47%, 4=6.38%, 10=11.85%, 20=10.55%, 50=43.36% lat (msec) : 100=14.84%, 250=1.82% cpu : usr=0.09%, sys=8.00%, ctx=1582, 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=1053KiB/s (1078kB/s), 260KiB/s-287KiB/s (266kB/s-294kB/s), io=23.4MiB (24.5MB), run=21319-22742msec WRITE: bw=1108KiB/s (1135kB/s), 275KiB/s-299KiB/s (282kB/s-306kB/s), io=24.6MiB (25.8MB), run=21319-22742msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145901: Thu Aug 27 17:00:08 2026 read: IOPS=6, BW=108KiB/s (111kB/s)(5920KiB/54574msec) clat (msec): min=6, max=233, avg=29.94, stdev=28.46 lat (msec): min=6, max=233, avg=29.94, stdev=28.46 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 29], 80.00th=[ 40], 90.00th=[ 56], 95.00th=[ 79], | 99.00th=[ 182], 99.50th=[ 226], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 31, max= 381, per=26.39%, avg=115.60, stdev=70.60, samples=101 iops : min= 1, max= 23, avg= 6.44, stdev= 4.48, samples=101 write: IOPS=7, BW=117KiB/s (119kB/s)(6368KiB/54574msec); 0 zone resets clat (msec): min=38, max=316, avg=109.05, stdev=45.79 lat (msec): min=38, max=316, avg=109.05, stdev=45.79 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 72], | 30.00th=[ 82], 40.00th=[ 90], 50.00th=[ 99], 60.00th=[ 109], | 70.00th=[ 121], 80.00th=[ 138], 90.00th=[ 184], 95.00th=[ 203], | 99.00th=[ 264], 99.50th=[ 271], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 31, max= 223, per=25.47%, avg=117.44, stdev=43.99, samples=107 iops : min= 1, max= 13, avg= 6.54, stdev= 2.81, samples=107 lat (msec) : 10=2.47%, 20=20.31%, 50=20.70%, 100=30.60%, 250=25.26% lat (msec) : 500=0.65% cpu : usr=0.03%, sys=1.66%, ctx=1353, 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=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=145902: Thu Aug 27 17:00:08 2026 read: IOPS=6, BW=105KiB/s (108kB/s)(5744KiB/54569msec) clat (msec): min=6, max=283, avg=29.70, stdev=30.01 lat (msec): min=6, max=283, avg=29.70, stdev=30.01 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 38], 90.00th=[ 62], 95.00th=[ 94], | 99.00th=[ 155], 99.50th=[ 197], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 29, max= 416, per=26.95%, avg=118.03, stdev=76.79, samples=96 iops : min= 1, max= 26, avg= 6.59, stdev= 4.86, samples=96 write: IOPS=7, BW=120KiB/s (123kB/s)(6544KiB/54569msec); 0 zone resets clat (msec): min=39, max=293, avg=107.02, stdev=43.76 lat (msec): min=39, max=293, avg=107.03, stdev=43.76 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 55], 10.00th=[ 61], 20.00th=[ 73], | 30.00th=[ 81], 40.00th=[ 90], 50.00th=[ 99], 60.00th=[ 108], | 70.00th=[ 117], 80.00th=[ 136], 90.00th=[ 169], 95.00th=[ 203], | 99.00th=[ 245], 99.50th=[ 271], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 256, per=25.89%, avg=119.34, stdev=47.93, samples=108 iops : min= 1, max= 16, avg= 6.67, stdev= 3.08, samples=108 lat (msec) : 10=4.69%, 20=18.49%, 50=19.01%, 100=30.73%, 250=26.43% lat (msec) : 500=0.65% cpu : usr=0.06%, sys=1.64%, ctx=1375, 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=145903: Thu Aug 27 17:00:08 2026 read: IOPS=7, BW=121KiB/s (123kB/s)(6256KiB/51884msec) clat (msec): min=6, max=172, avg=28.10, stdev=24.57 lat (msec): min=6, max=172, avg=28.10, stdev=24.57 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 35], 90.00th=[ 57], 95.00th=[ 82], | 99.00th=[ 128], 99.50th=[ 169], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 31, max= 447, per=28.47%, avg=124.69, stdev=85.11, samples=99 iops : min= 1, max= 27, avg= 6.99, stdev= 5.36, samples=99 write: IOPS=7, BW=116KiB/s (119kB/s)(6032KiB/51884msec); 0 zone resets clat (msec): min=42, max=303, avg=108.33, stdev=46.54 lat (msec): min=42, max=303, avg=108.33, stdev=46.54 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 70], | 30.00th=[ 79], 40.00th=[ 88], 50.00th=[ 99], 60.00th=[ 109], | 70.00th=[ 120], 80.00th=[ 140], 90.00th=[ 174], 95.00th=[ 207], | 99.00th=[ 257], 99.50th=[ 284], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 192, per=25.03%, avg=115.40, stdev=42.87, samples=102 iops : min= 1, max= 12, avg= 6.40, stdev= 2.73, samples=102 lat (msec) : 10=4.04%, 20=20.96%, 50=20.44%, 100=29.56%, 250=24.35% lat (msec) : 500=0.65% cpu : usr=0.08%, sys=1.72%, ctx=1490, 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=145904: Thu Aug 27 17:00:08 2026 read: IOPS=6, BW=112KiB/s (114kB/s)(6032KiB/54095msec) clat (msec): min=7, max=206, avg=31.37, stdev=27.44 lat (msec): min=7, max=206, avg=31.37, stdev=27.44 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 31], 80.00th=[ 43], 90.00th=[ 66], 95.00th=[ 87], | 99.00th=[ 144], 99.50th=[ 174], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 31, max= 316, per=26.67%, avg=116.80, stdev=70.01, samples=101 iops : min= 1, max= 19, avg= 6.51, stdev= 4.44, samples=101 write: IOPS=7, BW=116KiB/s (118kB/s)(6256KiB/54095msec); 0 zone resets clat (msec): min=43, max=303, avg=107.85, stdev=42.46 lat (msec): min=43, max=303, avg=107.85, stdev=42.46 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 66], 20.00th=[ 75], | 30.00th=[ 81], 40.00th=[ 88], 50.00th=[ 100], 60.00th=[ 110], | 70.00th=[ 122], 80.00th=[ 136], 90.00th=[ 167], 95.00th=[ 197], | 99.00th=[ 239], 99.50th=[ 249], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 30, max= 223, per=25.20%, avg=116.19, stdev=42.81, samples=106 iops : min= 1, max= 13, avg= 6.47, stdev= 2.75, samples=106 lat (msec) : 10=1.95%, 20=20.05%, 50=20.83%, 100=30.34%, 250=26.69% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=1.64%, ctx=1367, 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=439KiB/s (449kB/s), 105KiB/s-121KiB/s (108kB/s-123kB/s), io=23.4MiB (24.5MB), run=51884-54574msec WRITE: bw=462KiB/s (473kB/s), 116KiB/s-120KiB/s (118kB/s-123kB/s), io=24.6MiB (25.8MB), run=51884-54574msec 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=145925: Thu Aug 27 17:00:22 2026 read: IOPS=2, BW=2320KiB/s (2376kB/s)(7168KiB/3089msec) clat (msec): min=159, max=393, avg=228.77, stdev=76.75 lat (msec): min=159, max=393, avg=228.77, stdev=76.75 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 184], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 211], 60.00th=[ 213], | 70.00th=[ 213], 80.00th=[ 236], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 2048, max= 4063, per=92.36%, avg=3053.50, stdev=1161.06, samples=4 iops : min= 2, max= 3, avg= 2.50, stdev= 0.58, samples=4 write: IOPS=1, BW=1657KiB/s (1697kB/s)(5120KiB/3089msec); 0 zone resets clat (msec): min=169, max=452, avg=252.54, stdev=115.37 lat (msec): min=169, max=452, avg=252.62, stdev=115.35 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 199], 60.00th=[ 199], | 70.00th=[ 249], 80.00th=[ 249], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 2027, max= 3915, per=54.12%, avg=2505.25, stdev=939.88, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 250=83.33%, 500=16.67% cpu : usr=0.00%, sys=24.35%, ctx=326, 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=145926: Thu Aug 27 17:00:22 2026 read: IOPS=0, BW=331KiB/s (339kB/s)(2048KiB/6193msec) clat (msec): min=127, max=249, avg=188.49, stdev=86.33 lat (msec): min=127, max=249, avg=188.50, stdev=86.33 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 128], | 30.00th=[ 128], 40.00th=[ 128], 50.00th=[ 128], 60.00th=[ 249], | 70.00th=[ 249], 80.00th=[ 249], 90.00th=[ 249], 95.00th=[ 249], | 99.00th=[ 249], 99.50th=[ 249], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 2035, max= 2048, per=61.75%, avg=2041.50, stdev= 9.19, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1653KiB/s (1693kB/s)(10.0MiB/6193msec); 0 zone resets clat (msec): min=85, max=2979, avg=577.23, stdev=862.69 lat (msec): min=85, max=2979, avg=577.38, stdev=862.67 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 91], | 30.00th=[ 182], 40.00th=[ 188], 50.00th=[ 305], 60.00th=[ 351], | 70.00th=[ 489], 80.00th=[ 518], 90.00th=[ 592], 95.00th=[ 2970], | 99.00th=[ 2970], 99.50th=[ 2970], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] bw ( KiB/s): min= 1957, max= 6144, per=56.43%, avg=2612.14, stdev=1557.70, samples=7 iops : min= 1, max= 6, avg= 1.86, stdev= 1.86, samples=7 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.02%, sys=13.29%, ctx=141, 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=145928: Thu Aug 27 17:00:22 2026 read: IOPS=2, BW=2115KiB/s (2166kB/s)(6144KiB/2905msec) clat (usec): min=860, max=331486, avg=170183.75, stdev=141182.09 lat (usec): min=861, max=331487, avg=170184.97, stdev=141182.11 clat percentiles (usec): | 1.00th=[ 865], 5.00th=[ 865], 10.00th=[ 865], 20.00th=[ 1156], | 30.00th=[ 1156], 40.00th=[170918], 50.00th=[170918], 60.00th=[235930], | 70.00th=[278922], 80.00th=[278922], 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= 2035, max= 4071, per=100.00%, avg=3343.00, stdev=1135.18, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=2, BW=2115KiB/s (2166kB/s)(6144KiB/2905msec); 0 zone resets clat (msec): min=105, max=676, avg=300.30, stdev=195.05 lat (msec): min=105, max=676, avg=300.41, stdev=195.04 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 236], 50.00th=[ 236], 60.00th=[ 262], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1961, max= 4071, per=59.71%, avg=2764.00, stdev=989.13, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 250=41.67%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=24.55%, ctx=217, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145930: Thu Aug 27 17:00:22 2026 read: IOPS=0, BW=937KiB/s (959kB/s)(5120KiB/5466msec) clat (usec): min=588, max=2623.1k, avg=533980.02, stdev=1168004.17 lat (usec): min=589, max=2623.1k, avg=533981.42, stdev=1168004.36 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], | 20.00th=[ 586], 30.00th=[ 594], 40.00th=[ 594], | 50.00th=[ 2540], 60.00th=[ 2540], 70.00th=[ 43254], | 80.00th=[ 43254], 90.00th=[2634023], 95.00th=[2634023], | 99.00th=[2634023], 99.50th=[2634023], 99.90th=[2634023], | 99.95th=[2634023], 99.99th=[2634023] bw ( KiB/s): min= 4071, max= 4087, per=100.00%, avg=4079.00, stdev=11.31, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1311KiB/s (1343kB/s)(7168KiB/5466msec); 0 zone resets clat (msec): min=127, max=819, avg=390.58, stdev=270.37 lat (msec): min=127, max=821, avg=390.88, stdev=270.71 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 130], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 380], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 584], 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= 1497, max= 2043, per=41.35%, avg=1914.20, stdev=235.60, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=16.67% lat (msec) : 4=8.33%, 50=8.33%, 250=25.00%, 500=8.33%, 750=16.67% lat (msec) : 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=11.07%, ctx=542, 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=3307KiB/s (3386kB/s), 331KiB/s-2320KiB/s (339kB/s-2376kB/s), io=20.0MiB (20.0MB), run=2905-6193msec WRITE: bw=4630KiB/s (4741kB/s), 1311KiB/s-2115KiB/s (1343kB/s-2166kB/s), io=28.0MiB (29.4MB), run=2905-6193msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145923: Thu Aug 27 17:00:23 2026 read: IOPS=2, BW=2375KiB/s (2432kB/s)(7168KiB/3018msec) clat (msec): min=53, max=252, avg=129.59, stdev=78.22 lat (msec): min=53, max=252, avg=129.59, stdev=78.22 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 64], | 30.00th=[ 88], 40.00th=[ 88], 50.00th=[ 94], 60.00th=[ 134], | 70.00th=[ 134], 80.00th=[ 222], 90.00th=[ 253], 95.00th=[ 253], | 99.00th=[ 253], 99.50th=[ 253], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 1957, max= 4196, per=100.00%, avg=3405.33, stdev=1256.06, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1696KiB/s (1737kB/s)(5120KiB/3018msec); 0 zone resets clat (msec): min=142, max=856, avg=413.53, stdev=287.20 lat (msec): min=142, max=856, avg=413.66, stdev=287.18 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 2035, max= 4063, per=80.30%, avg=3387.00, stdev=1170.87, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 100=33.33%, 250=33.33%, 500=25.00%, 1000=8.33% cpu : usr=0.00%, sys=5.50%, ctx=64, 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=145924: Thu Aug 27 17:00:23 2026 read: IOPS=0, BW=301KiB/s (309kB/s)(2048KiB/6796msec) clat (msec): min=91, max=210, avg=150.81, stdev=84.24 lat (msec): min=91, max=210, avg=150.81, stdev=84.24 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 92], | 30.00th=[ 92], 40.00th=[ 92], 50.00th=[ 92], 60.00th=[ 211], | 70.00th=[ 211], 80.00th=[ 211], 90.00th=[ 211], 95.00th=[ 211], | 99.00th=[ 211], 99.50th=[ 211], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 1418, max= 2043, per=57.43%, avg=1730.50, stdev=441.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1507KiB/s (1543kB/s)(10.0MiB/6796msec); 0 zone resets clat (msec): min=118, max=2445, avg=642.15, stdev=701.02 lat (msec): min=118, max=2445, avg=642.30, stdev=701.08 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 124], | 30.00th=[ 279], 40.00th=[ 359], 50.00th=[ 414], 60.00th=[ 418], | 70.00th=[ 518], 80.00th=[ 567], 90.00th=[ 1183], 95.00th=[ 2433], | 99.00th=[ 2433], 99.50th=[ 2433], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 1418, max= 4087, per=69.96%, avg=2950.83, stdev=1250.37, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=4.72%, ctx=123, 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=145927: Thu Aug 27 17:00:23 2026 read: IOPS=0, BW=948KiB/s (971kB/s)(6144KiB/6482msec) clat (msec): min=71, max=382, avg=195.12, stdev=122.48 lat (msec): min=71, max=382, avg=195.12, stdev=122.48 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 73], | 30.00th=[ 73], 40.00th=[ 161], 50.00th=[ 161], 60.00th=[ 197], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 1957, max= 4087, per=83.99%, avg=2530.50, stdev=1038.39, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=948KiB/s (971kB/s)(6144KiB/6482msec); 0 zone resets clat (msec): min=183, max=2882, avg=856.03, stdev=1032.90 lat (msec): min=183, max=2882, avg=856.15, stdev=1032.90 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 584], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 1957, max= 4063, per=59.90%, avg=2526.50, stdev=1025.14, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=33.33%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=4.49%, ctx=124, 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=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=145929: Thu Aug 27 17:00:23 2026 read: IOPS=0, BW=772KiB/s (790kB/s)(5120KiB/6633msec) clat (msec): min=72, max=2637, avg=768.96, stdev=1068.23 lat (msec): min=72, max=2637, avg=768.97, stdev=1068.23 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 114], 40.00th=[ 114], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 2023, max= 2043, per=67.57%, avg=2036.00, stdev= 9.45, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1081KiB/s (1107kB/s)(7168KiB/6633msec); 0 zone resets clat (msec): min=206, max=630, avg=390.31, stdev=161.08 lat (msec): min=206, max=630, avg=390.50, stdev=161.11 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 215], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 355], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 558], 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= 1490, max= 2043, per=45.29%, avg=1910.40, stdev=237.48, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=25.00%, >=2000=8.33% cpu : usr=0.02%, sys=4.03%, ctx=139, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3014KiB/s (3086kB/s), 301KiB/s-2375KiB/s (309kB/s-2432kB/s), io=20.0MiB (20.0MB), run=3018-6796msec WRITE: bw=4219KiB/s (4320kB/s), 948KiB/s-1696KiB/s (971kB/s-1737kB/s), io=28.0MiB (29.4MB), run=3018-6796msec 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=145942: Thu Aug 27 17:00:37 2026 read: IOPS=1, BW=4993KiB/s (5113kB/s)(12.0MiB/2461msec) clat (msec): min=649, max=1010, avg=794.88, stdev=190.53 lat (msec): min=649, max=1010, avg=794.88, stdev=190.53 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, 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=14.59%, ctx=296, 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=145943: Thu Aug 27 17:00:37 2026 read: IOPS=0, BW=1392KiB/s (1426kB/s)(4096KiB/2942msec) clat (nsec): min=698150k, max=698150k, avg=698150098.00, stdev= 0.00 lat (nsec): min=698153k, max=698153k, avg=698153178.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2785KiB/s (2851kB/s)(8192KiB/2942msec); 0 zone resets clat (msec): min=244, max=1868, avg=1056.23, stdev=1148.19 lat (msec): min=246, max=1868, avg=1057.53, stdev=1146.74 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 1871], | 70.00th=[ 1871], 80.00th=[ 1871], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.00%, ctx=100, 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=145944: Thu Aug 27 17:00:37 2026 write: IOPS=0, BW=3815KiB/s (3907kB/s)(12.0MiB/3221msec); 0 zone resets clat (msec): min=798, max=1236, avg=1058.75, stdev=230.16 lat (msec): min=800, max=1236, avg=1059.73, stdev=229.12 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 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= 8078, max= 8143, per=79.73%, avg=8110.50, stdev=45.96, 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=3.79%, ctx=41, 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=145945: Thu Aug 27 17:00:37 2026 write: IOPS=1, BW=4683KiB/s (4795kB/s)(12.0MiB/2624msec); 0 zone resets clat (msec): min=623, max=1035, avg=827.63, stdev=205.68 lat (msec): min=624, max=1035, avg=827.94, stdev=205.59 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 1036], 80.00th=[ 1036], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 8126, max= 8126, per=79.88%, avg=8126.00, stdev= 0.00, 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=5.99%, ctx=74, 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=5569KiB/s (5703kB/s), 1392KiB/s-4993KiB/s (1426kB/s-5113kB/s), io=16.0MiB (16.8MB), run=2461-2942msec WRITE: bw=9.93MiB/s (10.4MB/s), 2785KiB/s-4683KiB/s (2851kB/s-4795kB/s), io=32.0MiB (33.6MB), run=2624-3221msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145937: Thu Aug 27 17:00:37 2026 read: IOPS=1, BW=6437KiB/s (6591kB/s)(12.0MiB/1909msec) clat (msec): min=236, max=1105, avg=613.07, stdev=446.08 lat (msec): min=236, max=1105, avg=613.07, stdev=446.08 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 5468, max= 8015, per=100.00%, avg=6741.50, stdev=1801.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.18%, ctx=56, 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=145938: Thu Aug 27 17:00:37 2026 read: IOPS=0, BW=1251KiB/s (1281kB/s)(4096KiB/3275msec) clat (nsec): min=953333k, max=953333k, avg=953333173.00, stdev= 0.00 lat (nsec): min=953336k, max=953336k, avg=953336063.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 953], 5.00th=[ 953], 10.00th=[ 953], 20.00th=[ 953], | 30.00th=[ 953], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2501KiB/s (2561kB/s)(8192KiB/3275msec); 0 zone resets clat (msec): min=247, max=2012, avg=1130.10, stdev=1247.78 lat (msec): min=248, max=2015, avg=1132.06, stdev=1249.57 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 249], 60.00th=[ 2005], | 70.00th=[ 2005], 80.00th=[ 2005], 90.00th=[ 2005], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 8143, max= 8143, per=88.44%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.29%, ctx=34, 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=145939: Thu Aug 27 17:00:37 2026 write: IOPS=0, BW=3453KiB/s (3536kB/s)(12.0MiB/3559msec); 0 zone resets clat (msec): min=703, max=2047, avg=1155.99, stdev=771.74 lat (msec): min=704, max=2048, avg=1157.16, stdev=772.36 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 2056], 80.00th=[ 2056], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 8143, max= 8192, per=88.71%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.11%, sys=3.60%, ctx=62, 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=145940: Thu Aug 27 17:00:37 2026 write: IOPS=1, BW=5299KiB/s (5426kB/s)(12.0MiB/2319msec); 0 zone resets clat (msec): min=510, max=1082, avg=744.65, stdev=299.82 lat (msec): min=510, max=1083, avg=744.95, stdev=299.92 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 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= 8015, max= 8094, per=87.48%, avg=8054.50, stdev=55.86, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.57%, ctx=57, 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=5003KiB/s (5123kB/s), 1251KiB/s-6437KiB/s (1281kB/s-6591kB/s), io=16.0MiB (16.8MB), run=1909-3275msec WRITE: bw=9207KiB/s (9428kB/s), 2501KiB/s-5299KiB/s (2561kB/s-5426kB/s), io=32.0MiB (33.6MB), run=2319-3559msec