== sanity test 398b: DIO and buffer IO race ============== 20:04:06 (1763341446) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.25275 s, 11.8 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=148171: Sun Nov 16 20:06:00 2025 read: IOPS=15, BW=60.4KiB/s (61.9kB/s)(5992KiB/99138msec) clat (usec): min=86, max=165740, avg=30754.53, stdev=24676.26 lat (usec): min=87, max=165741, avg=30755.76, stdev=24676.27 clat percentiles (usec): | 1.00th=[ 121], 5.00th=[ 157], 10.00th=[ 186], 20.00th=[ 12256], | 30.00th=[ 17695], 40.00th=[ 22152], 50.00th=[ 25822], 60.00th=[ 31065], | 70.00th=[ 38011], 80.00th=[ 49021], 90.00th=[ 63177], 95.00th=[ 77071], | 99.00th=[106431], 99.50th=[137364], 99.90th=[160433], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 15, max= 168, per=24.95%, avg=60.37, stdev=24.10, samples=195 iops : min= 3, max= 42, avg=14.47, stdev= 6.07, samples=195 write: IOPS=15, BW=63.5KiB/s (65.0kB/s)(6296KiB/99138msec); 0 zone resets clat (usec): min=825, max=812183, avg=33452.85, stdev=38626.19 lat (usec): min=827, max=812184, avg=33454.37, stdev=38626.23 clat percentiles (usec): | 1.00th=[ 1012], 5.00th=[ 1156], 10.00th=[ 1319], 20.00th=[ 3425], | 30.00th=[ 8160], 40.00th=[ 17171], 50.00th=[ 26084], 60.00th=[ 33817], | 70.00th=[ 42206], 80.00th=[ 55837], 90.00th=[ 76022], 95.00th=[ 93848], | 99.00th=[143655], 99.50th=[179307], 99.90th=[274727], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 15, max= 141, per=25.02%, avg=63.31, stdev=25.29, samples=195 iops : min= 3, max= 35, avg=15.22, stdev= 6.37, samples=195 lat (usec) : 100=0.07%, 250=6.22%, 500=1.04%, 750=0.29%, 1000=0.52% lat (msec) : 2=7.45%, 4=4.04%, 10=6.32%, 20=12.89%, 50=39.81% lat (msec) : 100=18.52%, 250=2.70%, 500=0.10%, 1000=0.03% cpu : usr=0.09%, sys=7.52%, ctx=6377, 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=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=148172: Sun Nov 16 20:06:00 2025 read: IOPS=15, BW=61.1KiB/s (62.6kB/s)(5940KiB/97236msec) clat (usec): min=96, max=981119, avg=30750.04, stdev=35078.02 lat (usec): min=96, max=981120, avg=30752.63, stdev=35079.05 clat percentiles (usec): | 1.00th=[ 125], 5.00th=[ 159], 10.00th=[ 200], 20.00th=[ 11600], | 30.00th=[ 17433], 40.00th=[ 21365], 50.00th=[ 25560], 60.00th=[ 31065], | 70.00th=[ 38536], 80.00th=[ 47449], 90.00th=[ 61604], 95.00th=[ 71828], | 99.00th=[109577], 99.50th=[139461], 99.90th=[265290], 99.95th=[977273], | 99.99th=[977273] bw ( KiB/s): min= 15, max= 143, per=25.19%, avg=60.96, stdev=23.27, samples=191 iops : min= 3, max= 35, avg=14.61, stdev= 5.85, samples=191 write: IOPS=16, BW=65.3KiB/s (66.9kB/s)(6348KiB/97236msec); 0 zone resets clat (usec): min=796, max=264275, avg=32244.75, stdev=31931.66 lat (usec): min=797, max=264276, avg=32251.53, stdev=31938.22 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 1106], 10.00th=[ 1221], 20.00th=[ 2212], | 30.00th=[ 5932], 40.00th=[ 14484], 50.00th=[ 24773], 60.00th=[ 33817], | 70.00th=[ 44303], 80.00th=[ 57934], 90.00th=[ 77071], 95.00th=[ 93848], | 99.00th=[127402], 99.50th=[141558], 99.90th=[179307], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 15, max= 156, per=25.90%, avg=65.53, stdev=24.74, samples=190 iops : min= 3, max= 39, avg=15.77, stdev= 6.19, samples=190 lat (usec) : 100=0.03%, 250=6.09%, 500=1.37%, 750=0.13%, 1000=0.72% lat (msec) : 2=9.47%, 4=3.35%, 10=5.92%, 20=13.57%, 50=37.63% lat (msec) : 100=19.21%, 250=2.41%, 500=0.07%, 1000=0.03% cpu : usr=0.09%, sys=7.48%, ctx=6197, 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=148173: Sun Nov 16 20:06:00 2025 read: IOPS=15, BW=61.2KiB/s (62.7kB/s)(6028KiB/98462msec) clat (usec): min=102, max=192626, avg=30339.09, stdev=23516.72 lat (usec): min=102, max=192628, avg=30345.47, stdev=23517.04 clat percentiles (usec): | 1.00th=[ 126], 5.00th=[ 159], 10.00th=[ 202], 20.00th=[ 13698], | 30.00th=[ 18220], 40.00th=[ 22152], 50.00th=[ 26084], 60.00th=[ 31065], | 70.00th=[ 38011], 80.00th=[ 47449], 90.00th=[ 60556], 95.00th=[ 71828], | 99.00th=[102237], 99.50th=[121111], 99.90th=[185598], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 7, max= 128, per=25.21%, avg=61.02, stdev=25.21, samples=193 iops : min= 1, max= 32, avg=14.63, stdev= 6.36, samples=193 write: IOPS=15, BW=63.6KiB/s (65.1kB/s)(6260KiB/98462msec); 0 zone resets clat (usec): min=921, max=818343, avg=33456.23, stdev=40021.42 lat (usec): min=922, max=818344, avg=33460.74, stdev=40019.39 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1123], 10.00th=[ 1237], 20.00th=[ 2409], | 30.00th=[ 6915], 40.00th=[ 15270], 50.00th=[ 25297], 60.00th=[ 32375], | 70.00th=[ 42730], 80.00th=[ 56886], 90.00th=[ 78119], 95.00th=[ 99091], | 99.00th=[149947], 99.50th=[181404], 99.90th=[299893], 99.95th=[817890], | 99.99th=[817890] bw ( KiB/s): min= 23, max= 152, per=24.99%, avg=63.22, stdev=25.38, samples=193 iops : min= 5, max= 38, avg=15.19, stdev= 6.40, samples=193 lat (usec) : 250=5.86%, 500=1.14%, 750=0.03%, 1000=0.49% lat (msec) : 2=9.08%, 4=3.55%, 10=5.79%, 20=13.28%, 50=39.55% lat (msec) : 100=18.20%, 250=2.96%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=7.17%, ctx=6194, 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=148174: Sun Nov 16 20:06:00 2025 read: IOPS=15, BW=61.7KiB/s (63.2kB/s)(6052KiB/98120msec) clat (usec): min=98, max=993672, avg=30383.89, stdev=33328.20 lat (usec): min=99, max=993756, avg=30385.21, stdev=33329.79 clat percentiles (usec): | 1.00th=[ 118], 5.00th=[ 153], 10.00th=[ 190], 20.00th=[ 12911], | 30.00th=[ 18220], 40.00th=[ 21890], 50.00th=[ 26084], 60.00th=[ 30540], | 70.00th=[ 38536], 80.00th=[ 47449], 90.00th=[ 59507], 95.00th=[ 69731], | 99.00th=[ 91751], 99.50th=[104334], 99.90th=[200279], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 15, max= 136, per=25.45%, avg=61.60, stdev=23.06, samples=193 iops : min= 3, max= 34, avg=14.78, stdev= 5.79, samples=193 write: IOPS=15, BW=63.6KiB/s (65.1kB/s)(6236KiB/98120msec); 0 zone resets clat (usec): min=890, max=333612, avg=33209.96, stdev=35321.95 lat (usec): min=892, max=333614, avg=33213.55, stdev=35320.68 clat percentiles (usec): | 1.00th=[ 979], 5.00th=[ 1106], 10.00th=[ 1237], 20.00th=[ 2638], | 30.00th=[ 7111], 40.00th=[ 15926], 50.00th=[ 24511], 60.00th=[ 33817], | 70.00th=[ 43779], 80.00th=[ 57410], 90.00th=[ 74974], 95.00th=[ 98042], | 99.00th=[158335], 99.50th=[175113], 99.90th=[291505], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 23, max= 148, per=25.22%, avg=63.80, stdev=22.68, samples=192 iops : min= 5, max= 37, avg=15.33, stdev= 5.72, samples=192 lat (usec) : 100=0.07%, 250=6.02%, 500=1.17%, 750=0.23%, 1000=0.78% lat (msec) : 2=8.59%, 4=3.16%, 10=5.92%, 20=14.10%, 50=38.44% lat (msec) : 100=18.91%, 250=2.44%, 500=0.13%, 1000=0.03% cpu : usr=0.10%, sys=7.50%, ctx=6282, 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=242KiB/s (248kB/s), 60.4KiB/s-61.7KiB/s (61.9kB/s-63.2kB/s), io=23.4MiB (24.6MB), run=97236-99138msec WRITE: bw=254KiB/s (260kB/s), 63.5KiB/s-65.3KiB/s (65.0kB/s-66.9kB/s), io=24.6MiB (25.7MB), run=97236-99138msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148177: Sun Nov 16 20:08:19 2025 read: IOPS=6, BW=25.2KiB/s (25.9kB/s)(5992KiB/237334msec) clat (msec): min=6, max=872, avg=33.08, stdev=35.96 lat (msec): min=6, max=872, avg=33.08, stdev=35.96 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 46], 90.00th=[ 65], 95.00th=[ 82], | 99.00th=[ 136], 99.50th=[ 184], 99.90th=[ 368], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 95, per=26.47%, avg=26.74, stdev=16.92, samples=434 iops : min= 1, max= 23, avg= 6.05, stdev= 4.26, samples=434 write: IOPS=6, BW=26.5KiB/s (27.2kB/s)(6296KiB/237334msec); 0 zone resets clat (msec): min=47, max=454, avg=119.23, stdev=47.36 lat (msec): min=47, max=454, avg=119.23, stdev=47.36 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 72], 20.00th=[ 82], | 30.00th=[ 90], 40.00th=[ 100], 50.00th=[ 109], 60.00th=[ 121], | 70.00th=[ 133], 80.00th=[ 155], 90.00th=[ 184], 95.00th=[ 215], | 99.00th=[ 264], 99.50th=[ 292], 99.90th=[ 359], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 7, max= 56, per=24.97%, avg=26.22, stdev= 9.70, samples=464 iops : min= 1, max= 14, avg= 5.91, stdev= 2.48, samples=464 lat (msec) : 10=3.06%, 20=16.93%, 50=20.87%, 100=28.16%, 250=29.98% lat (msec) : 500=0.98%, 1000=0.03% cpu : usr=0.05%, sys=1.49%, ctx=5588, 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=148178: Sun Nov 16 20:08:19 2025 read: IOPS=6, BW=25.0KiB/s (25.6kB/s)(5940KiB/237187msec) clat (msec): min=5, max=1045, avg=32.05, stdev=36.19 lat (msec): min=5, max=1045, avg=32.05, stdev=36.19 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 47], 90.00th=[ 62], 95.00th=[ 78], | 99.00th=[ 109], 99.50th=[ 129], 99.90th=[ 422], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 86, per=27.34%, avg=27.61, stdev=16.57, samples=417 iops : min= 1, max= 21, avg= 6.26, stdev= 4.16, samples=417 write: IOPS=6, BW=26.8KiB/s (27.4kB/s)(6348KiB/237187msec); 0 zone resets clat (msec): min=35, max=412, avg=119.38, stdev=48.43 lat (msec): min=35, max=412, avg=119.39, stdev=48.43 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 70], 20.00th=[ 82], | 30.00th=[ 90], 40.00th=[ 100], 50.00th=[ 109], 60.00th=[ 121], | 70.00th=[ 133], 80.00th=[ 155], 90.00th=[ 184], 95.00th=[ 211], | 99.00th=[ 275], 99.50th=[ 317], 99.90th=[ 397], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 7, max= 56, per=25.05%, avg=26.30, stdev= 9.94, samples=467 iops : min= 1, max= 14, avg= 5.93, stdev= 2.55, samples=467 lat (msec) : 10=2.67%, 20=17.48%, 50=20.48%, 100=28.19%, 250=30.34% lat (msec) : 500=0.81%, 2000=0.03% cpu : usr=0.04%, sys=1.46%, ctx=5452, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148179: Sun Nov 16 20:08:19 2025 read: IOPS=6, BW=25.6KiB/s (26.2kB/s)(6028KiB/235766msec) clat (msec): min=5, max=420, avg=33.47, stdev=29.44 lat (msec): min=5, max=420, avg=33.47, stdev=29.44 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 51], 90.00th=[ 67], 95.00th=[ 84], | 99.00th=[ 122], 99.50th=[ 155], 99.90th=[ 359], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 119, per=26.29%, avg=26.55, stdev=17.27, samples=439 iops : min= 1, max= 29, avg= 6.00, stdev= 4.35, samples=439 write: IOPS=6, BW=26.6KiB/s (27.2kB/s)(6260KiB/235766msec); 0 zone resets clat (msec): min=37, max=1041, avg=118.35, stdev=54.05 lat (msec): min=37, max=1041, avg=118.35, stdev=54.05 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 61], 10.00th=[ 68], 20.00th=[ 79], | 30.00th=[ 88], 40.00th=[ 99], 50.00th=[ 109], 60.00th=[ 118], | 70.00th=[ 132], 80.00th=[ 153], 90.00th=[ 182], 95.00th=[ 211], | 99.00th=[ 271], 99.50th=[ 330], 99.90th=[ 443], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 55, per=25.00%, avg=26.25, stdev=10.49, samples=461 iops : min= 1, max= 13, avg= 5.92, stdev= 2.68, samples=461 lat (msec) : 10=3.58%, 20=16.41%, 50=19.50%, 100=29.88%, 250=29.52% lat (msec) : 500=1.07%, 2000=0.03% cpu : usr=0.05%, sys=1.49%, ctx=5592, 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=148180: Sun Nov 16 20:08:19 2025 read: IOPS=6, BW=25.5KiB/s (26.1kB/s)(6052KiB/237002msec) clat (msec): min=5, max=311, avg=32.48, stdev=27.40 lat (msec): min=5, max=311, avg=32.48, stdev=27.40 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 46], 90.00th=[ 65], 95.00th=[ 83], | 99.00th=[ 125], 99.50th=[ 153], 99.90th=[ 300], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 120, per=27.43%, avg=27.71, stdev=17.96, samples=423 iops : min= 1, max= 30, avg= 6.29, stdev= 4.52, samples=423 write: IOPS=6, BW=26.3KiB/s (26.9kB/s)(6236KiB/237002msec); 0 zone resets clat (msec): min=32, max=1036, avg=120.44, stdev=53.97 lat (msec): min=32, max=1036, avg=120.44, stdev=53.97 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 69], 20.00th=[ 81], | 30.00th=[ 89], 40.00th=[ 101], 50.00th=[ 109], 60.00th=[ 122], | 70.00th=[ 134], 80.00th=[ 155], 90.00th=[ 186], 95.00th=[ 218], | 99.00th=[ 275], 99.50th=[ 317], 99.90th=[ 409], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 55, per=24.47%, avg=25.70, stdev= 9.89, samples=468 iops : min= 1, max= 13, avg= 5.78, stdev= 2.52, samples=468 lat (msec) : 10=2.86%, 20=16.80%, 50=21.88%, 100=26.79%, 250=30.50% lat (msec) : 500=1.14%, 2000=0.03% cpu : usr=0.05%, sys=1.46%, ctx=5428, 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=101KiB/s (104kB/s), 25.0KiB/s-25.6KiB/s (25.6kB/s-26.2kB/s), io=23.4MiB (24.6MB), run=235766-237334msec WRITE: bw=106KiB/s (108kB/s), 26.3KiB/s-26.8KiB/s (26.9kB/s-27.4kB/s), io=24.6MiB (25.7MB), run=235766-237334msec 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=148233: Sun Nov 16 20:08:47 2025 read: IOPS=17, BW=284KiB/s (291kB/s)(5920KiB/20863msec) clat (usec): min=110, max=174365, avg=27143.64, stdev=23377.11 lat (usec): min=110, max=174366, avg=27144.97, stdev=23377.12 clat percentiles (usec): | 1.00th=[ 125], 5.00th=[ 169], 10.00th=[ 194], 20.00th=[ 971], | 30.00th=[ 15795], 40.00th=[ 21103], 50.00th=[ 24249], 60.00th=[ 30540], | 70.00th=[ 34866], 80.00th=[ 42730], 90.00th=[ 54264], 95.00th=[ 65274], | 99.00th=[ 99091], 99.50th=[162530], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 96, max= 536, per=24.01%, avg=275.68, stdev=88.99, samples=40 iops : min= 6, max= 33, avg=16.52, stdev= 5.64, samples=40 write: IOPS=19, BW=305KiB/s (313kB/s)(6368KiB/20863msec); 0 zone resets clat (usec): min=1368, max=156502, avg=27086.97, stdev=27376.29 lat (usec): min=1372, max=156506, avg=27089.49, stdev=27376.31 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1860], 10.00th=[ 2212], 20.00th=[ 4146], | 30.00th=[ 7963], 40.00th=[ 12256], 50.00th=[ 18744], 60.00th=[ 25560], | 70.00th=[ 33817], 80.00th=[ 45876], 90.00th=[ 64226], 95.00th=[ 79168], | 99.00th=[128451], 99.50th=[143655], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 63, max= 476, per=25.06%, avg=302.50, stdev=104.15, samples=40 iops : min= 3, max= 29, avg=18.17, stdev= 6.58, samples=40 lat (usec) : 250=6.25%, 500=2.99%, 750=0.26%, 1000=0.13% lat (msec) : 2=4.82%, 4=6.64%, 10=8.46%, 20=15.49%, 50=39.97% lat (msec) : 100=13.28%, 250=1.69% cpu : usr=0.16%, sys=9.60%, ctx=1523, 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=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=148234: Sun Nov 16 20:08:47 2025 read: IOPS=18, BW=288KiB/s (295kB/s)(5744KiB/19936msec) clat (usec): min=108, max=139672, avg=27071.10, stdev=23078.51 lat (usec): min=108, max=139674, avg=27074.37, stdev=23078.38 clat percentiles (usec): | 1.00th=[ 125], 5.00th=[ 165], 10.00th=[ 184], 20.00th=[ 367], | 30.00th=[ 15270], 40.00th=[ 21365], 50.00th=[ 24511], 60.00th=[ 28705], | 70.00th=[ 34341], 80.00th=[ 43779], 90.00th=[ 56361], 95.00th=[ 68682], | 99.00th=[107480], 99.50th=[125305], 99.90th=[139461], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 152, max= 574, per=25.27%, avg=290.05, stdev=92.95, samples=38 iops : min= 9, max= 35, avg=17.42, stdev= 5.86, samples=38 write: IOPS=20, BW=328KiB/s (336kB/s)(6544KiB/19936msec); 0 zone resets clat (usec): min=1507, max=194886, avg=24843.65, stdev=25349.54 lat (usec): min=1508, max=194888, avg=24861.49, stdev=25350.56 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1860], 10.00th=[ 2212], 20.00th=[ 4178], | 30.00th=[ 6325], 40.00th=[ 9503], 50.00th=[ 16057], 60.00th=[ 23987], | 70.00th=[ 32113], 80.00th=[ 43254], 90.00th=[ 60031], 95.00th=[ 74974], | 99.00th=[ 99091], 99.50th=[105382], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 159, max= 539, per=26.97%, avg=325.55, stdev=100.35, samples=38 iops : min= 9, max= 33, avg=19.63, stdev= 6.33, samples=38 lat (usec) : 250=7.81%, 500=1.69%, 750=0.13%, 1000=0.52% lat (msec) : 2=4.30%, 4=7.16%, 10=11.46%, 20=13.80%, 50=38.80% lat (msec) : 100=13.15%, 250=1.17% cpu : usr=0.17%, sys=10.12%, ctx=1501, 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=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=148235: Sun Nov 16 20:08:47 2025 read: IOPS=19, BW=305KiB/s (312kB/s)(6256KiB/20525msec) clat (usec): min=97, max=152650, avg=27471.23, stdev=23688.98 lat (usec): min=97, max=152652, avg=27474.65, stdev=23688.65 clat percentiles (usec): | 1.00th=[ 124], 5.00th=[ 172], 10.00th=[ 192], 20.00th=[ 318], | 30.00th=[ 15795], 40.00th=[ 20579], 50.00th=[ 25035], 60.00th=[ 31327], | 70.00th=[ 36963], 80.00th=[ 44827], 90.00th=[ 54264], 95.00th=[ 68682], | 99.00th=[104334], 99.50th=[147850], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 63, max= 541, per=26.72%, avg=306.73, stdev=90.25, samples=40 iops : min= 3, max= 33, avg=18.45, stdev= 5.73, samples=40 write: IOPS=18, BW=294KiB/s (301kB/s)(6032KiB/20525msec); 0 zone resets clat (usec): min=1478, max=232716, avg=25837.39, stdev=28054.69 lat (usec): min=1480, max=232717, avg=25840.17, stdev=28054.61 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1876], 10.00th=[ 2180], 20.00th=[ 4015], | 30.00th=[ 7439], 40.00th=[ 10814], 50.00th=[ 16909], 60.00th=[ 23987], | 70.00th=[ 31589], 80.00th=[ 43254], 90.00th=[ 62129], 95.00th=[ 73925], | 99.00th=[124257], 99.50th=[170918], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 126, max= 544, per=24.33%, avg=293.63, stdev=104.80, samples=40 iops : min= 7, max= 34, avg=17.62, stdev= 6.66, samples=40 lat (usec) : 100=0.13%, 250=8.46%, 500=2.60%, 750=0.52%, 1000=0.39% lat (msec) : 2=4.30%, 4=6.51%, 10=9.11%, 20=13.67%, 50=39.45% lat (msec) : 100=13.28%, 250=1.56% cpu : usr=0.18%, sys=9.76%, ctx=1537, 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=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=148236: Sun Nov 16 20:08:47 2025 read: IOPS=18, BW=299KiB/s (306kB/s)(6032KiB/20192msec) clat (usec): min=121, max=151925, avg=28998.00, stdev=24941.07 lat (usec): min=121, max=151926, avg=29006.67, stdev=24935.52 clat percentiles (usec): | 1.00th=[ 129], 5.00th=[ 176], 10.00th=[ 196], 20.00th=[ 347], | 30.00th=[ 16057], 40.00th=[ 21627], 50.00th=[ 26084], 60.00th=[ 32637], | 70.00th=[ 38011], 80.00th=[ 47449], 90.00th=[ 61604], 95.00th=[ 76022], | 99.00th=[115868], 99.50th=[132645], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 88, max= 447, per=26.09%, avg=299.46, stdev=84.88, samples=39 iops : min= 5, max= 27, avg=18.03, stdev= 5.34, samples=39 write: IOPS=19, BW=310KiB/s (317kB/s)(6256KiB/20192msec); 0 zone resets clat (usec): min=1440, max=231111, avg=23597.93, stdev=26742.16 lat (usec): min=1444, max=231114, avg=23600.23, stdev=26742.24 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1745], 10.00th=[ 2008], 20.00th=[ 3097], | 30.00th=[ 4817], 40.00th=[ 8160], 50.00th=[ 13435], 60.00th=[ 19792], | 70.00th=[ 30802], 80.00th=[ 41681], 90.00th=[ 58459], 95.00th=[ 76022], | 99.00th=[106431], 99.50th=[139461], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 154, max= 542, per=25.86%, avg=312.15, stdev=94.55, samples=39 iops : min= 9, max= 33, avg=18.79, stdev= 5.89, samples=39 lat (usec) : 250=8.33%, 500=2.21%, 750=0.39%, 1000=0.26% lat (msec) : 2=5.47%, 4=8.72%, 10=9.24%, 20=14.06%, 50=35.81% lat (msec) : 100=14.06%, 250=1.43% cpu : usr=0.13%, sys=9.96%, ctx=1494, 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=1148KiB/s (1176kB/s), 284KiB/s-305KiB/s (291kB/s-312kB/s), io=23.4MiB (24.5MB), run=19936-20863msec WRITE: bw=1208KiB/s (1237kB/s), 294KiB/s-328KiB/s (301kB/s-336kB/s), io=24.6MiB (25.8MB), run=19936-20863msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148228: Sun Nov 16 20:09:22 2025 read: IOPS=6, BW=106KiB/s (109kB/s)(5920KiB/55644msec) clat (msec): min=6, max=153, avg=27.85, stdev=24.43 lat (msec): min=6, max=153, avg=27.85, stdev=24.43 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 35], 90.00th=[ 62], 95.00th=[ 83], | 99.00th=[ 134], 99.50th=[ 144], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 31, max= 480, per=25.75%, avg=110.70, stdev=74.89, samples=105 iops : min= 1, max= 30, avg= 6.18, stdev= 4.76, samples=105 write: IOPS=7, BW=114KiB/s (117kB/s)(6368KiB/55644msec); 0 zone resets clat (msec): min=45, max=320, avg=113.64, stdev=41.91 lat (msec): min=45, max=320, avg=113.64, stdev=41.91 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 65], 10.00th=[ 71], 20.00th=[ 81], | 30.00th=[ 88], 40.00th=[ 97], 50.00th=[ 108], 60.00th=[ 115], | 70.00th=[ 127], 80.00th=[ 140], 90.00th=[ 171], 95.00th=[ 190], | 99.00th=[ 268], 99.50th=[ 313], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 31, max= 191, per=25.48%, avg=115.17, stdev=36.42, samples=109 iops : min= 1, max= 11, avg= 6.47, stdev= 2.31, samples=109 lat (msec) : 10=1.95%, 20=24.35%, 50=16.15%, 100=27.73%, 250=29.04% lat (msec) : 500=0.78% cpu : usr=0.06%, sys=1.81%, ctx=1365, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148229: Sun Nov 16 20:09:22 2025 read: IOPS=6, BW=104KiB/s (106kB/s)(5744KiB/55256msec) clat (msec): min=4, max=173, avg=27.77, stdev=25.28 lat (msec): min=4, max=173, avg=27.77, stdev=25.28 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 27], 80.00th=[ 36], 90.00th=[ 56], 95.00th=[ 80], | 99.00th=[ 148], 99.50th=[ 159], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 31, max= 352, per=26.06%, avg=112.07, stdev=65.20, samples=100 iops : min= 1, max= 22, avg= 6.26, stdev= 4.16, samples=100 write: IOPS=7, BW=118KiB/s (121kB/s)(6544KiB/55256msec); 0 zone resets clat (msec): min=39, max=326, avg=110.57, stdev=38.62 lat (msec): min=39, max=326, avg=110.58, stdev=38.62 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 63], 10.00th=[ 68], 20.00th=[ 79], | 30.00th=[ 87], 40.00th=[ 96], 50.00th=[ 105], 60.00th=[ 115], | 70.00th=[ 127], 80.00th=[ 142], 90.00th=[ 157], 95.00th=[ 178], | 99.00th=[ 255], 99.50th=[ 264], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 224, per=26.10%, avg=117.97, stdev=39.25, samples=109 iops : min= 1, max= 14, avg= 6.63, stdev= 2.53, samples=109 lat (msec) : 10=2.99%, 20=22.66%, 50=16.67%, 100=27.21%, 250=29.82% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=1.78%, ctx=1350, 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=148230: Sun Nov 16 20:09:22 2025 read: IOPS=7, BW=117KiB/s (120kB/s)(6256KiB/53440msec) clat (msec): min=4, max=249, avg=26.49, stdev=23.72 lat (msec): min=4, max=249, avg=26.49, stdev=23.72 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 26], 80.00th=[ 32], 90.00th=[ 47], 95.00th=[ 70], | 99.00th=[ 132], 99.50th=[ 153], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 31, max= 348, per=27.84%, avg=119.72, stdev=80.38, samples=103 iops : min= 1, max= 21, avg= 6.76, stdev= 5.07, samples=103 write: IOPS=7, BW=113KiB/s (116kB/s)(6032KiB/53440msec); 0 zone resets clat (msec): min=36, max=266, avg=113.93, stdev=43.58 lat (msec): min=36, max=266, avg=113.94, stdev=43.58 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 67], 20.00th=[ 79], | 30.00th=[ 86], 40.00th=[ 97], 50.00th=[ 107], 60.00th=[ 117], | 70.00th=[ 128], 80.00th=[ 142], 90.00th=[ 176], 95.00th=[ 213], | 99.00th=[ 243], 99.50th=[ 249], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 31, max= 189, per=24.77%, avg=111.96, stdev=36.82, samples=105 iops : min= 1, max= 11, avg= 6.26, stdev= 2.35, samples=105 lat (msec) : 10=2.60%, 20=24.61%, 50=19.66%, 100=24.61%, 250=28.39% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=1.87%, ctx=1409, 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=148231: Sun Nov 16 20:09:22 2025 read: IOPS=6, BW=110KiB/s (113kB/s)(6032KiB/54784msec) clat (msec): min=6, max=248, avg=27.98, stdev=28.13 lat (msec): min=6, max=248, avg=27.98, stdev=28.13 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 22], | 70.00th=[ 26], 80.00th=[ 33], 90.00th=[ 60], 95.00th=[ 83], | 99.00th=[ 138], 99.50th=[ 178], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 31, max= 377, per=27.14%, avg=116.68, stdev=70.91, samples=101 iops : min= 1, max= 23, avg= 6.55, stdev= 4.49, samples=101 write: IOPS=7, BW=114KiB/s (117kB/s)(6256KiB/54784msec); 0 zone resets clat (msec): min=45, max=258, avg=112.85, stdev=40.00 lat (msec): min=45, max=258, avg=112.85, stdev=40.00 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 61], 10.00th=[ 68], 20.00th=[ 80], | 30.00th=[ 88], 40.00th=[ 96], 50.00th=[ 108], 60.00th=[ 115], | 70.00th=[ 127], 80.00th=[ 142], 90.00th=[ 176], 95.00th=[ 192], | 99.00th=[ 226], 99.50th=[ 253], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 31, max= 191, per=25.18%, avg=113.81, stdev=37.61, samples=108 iops : min= 1, max= 11, avg= 6.37, stdev= 2.41, samples=108 lat (msec) : 10=4.17%, 20=22.66%, 50=16.41%, 100=25.91%, 250=30.60% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=1.86%, ctx=1417, 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=430KiB/s (441kB/s), 104KiB/s-117KiB/s (106kB/s-120kB/s), io=23.4MiB (24.5MB), run=53440-55644msec WRITE: bw=453KiB/s (464kB/s), 113KiB/s-118KiB/s (116kB/s-121kB/s), io=24.6MiB (25.8MB), run=53440-55644msec 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=148255: Sun Nov 16 20:09:35 2025 read: IOPS=2, BW=2804KiB/s (2872kB/s)(7168KiB/2556msec) clat (msec): min=4, max=416, avg=234.69, stdev=155.85 lat (msec): min=4, max=416, avg=234.69, stdev=155.85 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 64], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 232], 60.00th=[ 321], | 70.00th=[ 321], 80.00th=[ 384], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 1771, max= 4096, per=61.24%, avg=3283.67, stdev=1311.20, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=2003KiB/s (2051kB/s)(5120KiB/2556msec); 0 zone resets clat (msec): min=86, max=364, avg=182.18, stdev=117.09 lat (msec): min=86, max=364, avg=182.27, stdev=117.09 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 87], | 30.00th=[ 89], 40.00th=[ 89], 50.00th=[ 144], 60.00th=[ 144], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 2023, max= 6144, per=54.40%, avg=4083.50, stdev=2913.99, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 lat (msec) : 10=8.33%, 100=25.00%, 250=33.33%, 500=33.33% cpu : usr=0.08%, sys=25.87%, ctx=331, 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=148256: Sun Nov 16 20:09:35 2025 read: IOPS=0, BW=536KiB/s (549kB/s)(2048KiB/3819msec) clat (msec): min=241, max=290, avg=266.30, stdev=34.48 lat (msec): min=241, max=290, avg=266.30, stdev=34.48 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 1774, max= 2048, per=35.64%, avg=1911.00, stdev=193.75, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2681KiB/s (2746kB/s)(10.0MiB/3819msec); 0 zone resets clat (msec): min=79, max=877, avg=328.31, stdev=249.12 lat (msec): min=80, max=877, avg=328.41, stdev=249.13 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 113], | 30.00th=[ 117], 40.00th=[ 241], 50.00th=[ 243], 60.00th=[ 249], | 70.00th=[ 347], 80.00th=[ 418], 90.00th=[ 600], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 2043, max= 4047, per=42.95%, avg=3224.40, stdev=1076.43, samples=5 iops : min= 1, max= 3, avg= 2.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=26.17%, ctx=356, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148257: Sun Nov 16 20:09:35 2025 read: IOPS=1, BW=1647KiB/s (1687kB/s)(6144KiB/3730msec) clat (usec): min=1150, max=249427, avg=145043.22, stdev=115442.79 lat (usec): min=1151, max=249429, avg=145045.09, stdev=115443.08 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1156], 10.00th=[ 1156], 20.00th=[ 1500], | 30.00th=[ 1500], 40.00th=[160433], 50.00th=[160433], 60.00th=[219153], | 70.00th=[238027], 80.00th=[238027], 90.00th=[248513], 95.00th=[248513], | 99.00th=[248513], 99.50th=[248513], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 2043, max= 4096, per=63.03%, avg=3379.67, stdev=1158.58, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1647KiB/s (1687kB/s)(6144KiB/3730msec); 0 zone resets clat (msec): min=198, max=902, avg=476.18, stdev=283.57 lat (msec): min=198, max=902, avg=476.26, stdev=283.57 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 600], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1744, max= 4000, per=31.44%, avg=2360.40, stdev=924.46, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 2=16.67%, 250=50.00%, 500=8.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=20.17%, ctx=192, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148258: Sun Nov 16 20:09:35 2025 read: IOPS=1, BW=1527KiB/s (1564kB/s)(5120KiB/3352msec) clat (msec): min=3, max=394, avg=183.71, stdev=173.43 lat (msec): min=3, max=394, avg=183.71, stdev=173.43 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4], | 30.00th=[ 71], 40.00th=[ 71], 50.00th=[ 108], 60.00th=[ 108], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 2023, max= 6144, per=76.16%, avg=4083.50, stdev=2913.99, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=2, BW=2138KiB/s (2190kB/s)(7168KiB/3352msec); 0 zone resets clat (msec): min=179, max=518, avg=347.35, stdev=102.60 lat (msec): min=179, max=518, avg=347.44, stdev=102.58 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 309], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 334], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 409], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 1729, max= 4000, per=36.67%, avg=2752.60, stdev=1137.86, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 4=8.33%, 100=8.33%, 250=16.67%, 500=58.33%, 750=8.33% cpu : usr=0.00%, sys=23.63%, ctx=356, 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=5363KiB/s (5491kB/s), 536KiB/s-2804KiB/s (549kB/s-2872kB/s), io=20.0MiB (20.0MB), run=2556-3819msec WRITE: bw=7508KiB/s (7688kB/s), 1647KiB/s-2681KiB/s (1687kB/s-2746kB/s), io=28.0MiB (29.4MB), run=2556-3819msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148250: Sun Nov 16 20:09:35 2025 read: IOPS=2, BW=3017KiB/s (3089kB/s)(7168KiB/2376msec) clat (msec): min=56, max=253, avg=105.45, stdev=66.80 lat (msec): min=56, max=253, avg=105.45, stdev=66.80 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 72], | 30.00th=[ 77], 40.00th=[ 77], 50.00th=[ 86], 60.00th=[ 95], | 70.00th=[ 95], 80.00th=[ 101], 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= 1868, max= 7052, per=91.36%, avg=4460.00, stdev=3665.64, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=2, BW=2155KiB/s (2207kB/s)(5120KiB/2376msec); 0 zone resets clat (msec): min=115, max=583, avg=323.82, stdev=206.83 lat (msec): min=115, max=583, avg=323.92, stdev=206.84 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 116], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 230], 60.00th=[ 230], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1410, max= 3340, per=32.28%, avg=2206.00, stdev=1008.42, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=41.67%, 250=33.33%, 500=8.33%, 750=16.67% cpu : usr=0.00%, sys=9.31%, ctx=76, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148251: Sun Nov 16 20:09:35 2025 read: IOPS=0, BW=488KiB/s (500kB/s)(2048KiB/4195msec) clat (msec): min=93, max=462, avg=277.85, stdev=261.23 lat (msec): min=93, max=462, avg=277.85, stdev=261.23 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 93], 40.00th=[ 93], 50.00th=[ 93], 60.00th=[ 464], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 1395, max= 1950, per=34.26%, avg=1672.50, stdev=392.44, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2441KiB/s (2500kB/s)(10.0MiB/4195msec); 0 zone resets clat (msec): min=84, max=663, avg=361.44, stdev=209.00 lat (msec): min=85, max=663, avg=361.67, stdev=208.82 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 148], | 30.00th=[ 209], 40.00th=[ 222], 50.00th=[ 232], 60.00th=[ 388], | 70.00th=[ 506], 80.00th=[ 550], 90.00th=[ 609], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1670, max= 4185, per=40.22%, avg=2748.40, stdev=1225.40, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=16.67%, 750=33.33% cpu : usr=0.00%, sys=8.04%, ctx=130, 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=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=148252: Sun Nov 16 20:09:35 2025 read: IOPS=1, BW=1503KiB/s (1539kB/s)(6144KiB/4088msec) clat (msec): min=104, max=609, avg=319.10, stdev=218.07 lat (msec): min=104, max=609, avg=319.11, stdev=218.07 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 199], 50.00th=[ 199], 60.00th=[ 300], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 3856, max= 4047, per=80.94%, avg=3951.50, stdev=135.06, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1503KiB/s (1539kB/s)(6144KiB/4088msec); 0 zone resets clat (msec): min=136, max=734, avg=357.82, stdev=292.61 lat (msec): min=136, max=734, avg=357.93, stdev=292.65 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 209], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1838, max= 4055, per=36.08%, avg=2466.00, stdev=1062.65, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=58.33%, 500=8.33%, 750=33.33% cpu : usr=0.05%, sys=7.68%, ctx=223, 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=148253: Sun Nov 16 20:09:35 2025 read: IOPS=1, BW=1305KiB/s (1336kB/s)(5120KiB/3924msec) clat (msec): min=103, max=701, avg=413.59, stdev=270.19 lat (msec): min=103, max=701, avg=413.59, stdev=270.19 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 514], 60.00th=[ 514], | 70.00th=[ 600], 80.00th=[ 600], 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= 1868, max= 3340, per=48.87%, avg=2386.00, stdev=827.20, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1827KiB/s (1871kB/s)(7168KiB/3924msec); 0 zone resets clat (msec): min=103, max=682, avg=261.53, stdev=202.94 lat (msec): min=103, max=682, avg=261.67, stdev=202.94 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 140], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 192], 60.00th=[ 215], | 70.00th=[ 215], 80.00th=[ 355], 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= 2011, max= 5557, per=56.31%, avg=3848.00, stdev=1776.46, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 lat (msec) : 250=58.33%, 500=8.33%, 750=33.33% cpu : usr=0.05%, sys=6.96%, ctx=78, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4882KiB/s (4999kB/s), 488KiB/s-3017KiB/s (500kB/s-3089kB/s), io=20.0MiB (20.0MB), run=2376-4195msec WRITE: bw=6835KiB/s (6999kB/s), 1503KiB/s-2441KiB/s (1539kB/s-2500kB/s), io=28.0MiB (29.4MB), run=2376-4195msec 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=148264: Sun Nov 16 20:09:47 2025 read: IOPS=0, BW=2621KiB/s (2683kB/s)(12.0MiB/4689msec) clat (msec): min=687, max=2987, avg=1498.78, stdev=1291.36 lat (msec): min=687, max=2987, avg=1498.78, stdev=1291.36 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 818], | 70.00th=[ 3004], 80.00th=[ 3004], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 7831, max= 8175, per=100.00%, avg=8003.00, stdev=243.24, 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=10.96%, ctx=757, 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=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=148265: Sun Nov 16 20:09:47 2025 read: IOPS=0, BW=806KiB/s (825kB/s)(4096KiB/5082msec) clat (nsec): min=809619k, max=809619k, avg=809619052.00, stdev= 0.00 lat (nsec): min=809622k, max=809622k, avg=809622325.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7831, max= 7831, per=100.00%, avg=7831.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1612KiB/s (1651kB/s)(8192KiB/5082msec); 0 zone resets clat (msec): min=1323, max=2755, avg=2039.89, stdev=1012.55 lat (msec): min=1329, max=2756, avg=2042.74, stdev=1009.11 clat percentiles (msec): | 1.00th=[ 1318], 5.00th=[ 1318], 10.00th=[ 1318], 20.00th=[ 1318], | 30.00th=[ 1318], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 2769], | 70.00th=[ 2769], 80.00th=[ 2769], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.04%, sys=4.82%, 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=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=148267: Sun Nov 16 20:09:47 2025 write: IOPS=0, BW=2381KiB/s (2438kB/s)(12.0MiB/5161msec); 0 zone resets clat (msec): min=405, max=3600, avg=1659.64, stdev=1704.29 lat (msec): min=405, max=3600, avg=1660.09, stdev=1704.28 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 70.00th=[ 3608], 80.00th=[ 3608], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 7656, max= 8192, per=100.00%, avg=7924.00, stdev=379.01, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.32%, ctx=47, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148268: Sun Nov 16 20:09:47 2025 write: IOPS=0, BW=2998KiB/s (3070kB/s)(12.0MiB/4099msec); 0 zone resets clat (msec): min=386, max=3147, avg=1321.08, stdev=1581.78 lat (msec): min=387, max=3147, avg=1321.46, stdev=1581.81 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 70.00th=[ 3138], 80.00th=[ 3138], 90.00th=[ 3138], 95.00th=[ 3138], | 99.00th=[ 3138], 99.50th=[ 3138], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min=15663, max=15663, per=100.00%, avg=15663.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=4.47%, ctx=51, 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=3224KiB/s (3301kB/s), 806KiB/s-2621KiB/s (825kB/s-2683kB/s), io=16.0MiB (16.8MB), run=4689-5082msec WRITE: bw=6349KiB/s (6502kB/s), 1612KiB/s-2998KiB/s (1651kB/s-3070kB/s), io=32.0MiB (33.6MB), run=4099-5161msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148269: Sun Nov 16 20:09:48 2025 read: IOPS=0, BW=2472KiB/s (2531kB/s)(12.0MiB/4971msec) clat (msec): min=112, max=3364, avg=1646.27, stdev=1633.97 lat (msec): min=112, max=3364, avg=1646.27, stdev=1633.97 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 112], 40.00th=[ 1469], 50.00th=[ 1469], 60.00th=[ 1469], | 70.00th=[ 3373], 80.00th=[ 3373], 90.00th=[ 3373], 95.00th=[ 3373], | 99.00th=[ 3373], 99.50th=[ 3373], 99.90th=[ 3373], 99.95th=[ 3373], | 99.99th=[ 3373] bw ( KiB/s): min= 7571, max= 7571, per=100.00%, avg=7571.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.09%, ctx=37, 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=148270: Sun Nov 16 20:09:48 2025 read: IOPS=0, BW=828KiB/s (848kB/s)(4096KiB/4946msec) clat (nsec): min=2633.6M, max=2633.6M, avg=2633563256.00, stdev= 0.00 lat (nsec): min=2633.6M, max=2633.6M, avg=2633566318.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2635], 5.00th=[ 2635], 10.00th=[ 2635], 20.00th=[ 2635], | 30.00th=[ 2635], 40.00th=[ 2635], 50.00th=[ 2635], 60.00th=[ 2635], | 70.00th=[ 2635], 80.00th=[ 2635], 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= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1656KiB/s (1696kB/s)(8192KiB/4946msec); 0 zone resets clat (msec): min=634, max=1532, avg=1083.66, stdev=634.66 lat (msec): min=635, max=1532, avg=1083.94, stdev=634.55 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 1536], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7772, max= 7772, per=100.00%, avg=7772.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.37%, ctx=42, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148271: Sun Nov 16 20:09:48 2025 write: IOPS=0, BW=2521KiB/s (2581kB/s)(12.0MiB/4875msec); 0 zone resets clat (msec): min=311, max=2912, avg=1593.07, stdev=1300.61 lat (msec): min=312, max=2912, avg=1593.43, stdev=1300.66 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 1552], 50.00th=[ 1552], 60.00th=[ 1552], | 70.00th=[ 2903], 80.00th=[ 2903], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.28%, ctx=39, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148272: Sun Nov 16 20:09:48 2025 write: IOPS=0, BW=2895KiB/s (2965kB/s)(12.0MiB/4244msec); 0 zone resets clat (msec): min=367, max=3444, avg=1413.93, stdev=1758.74 lat (msec): min=367, max=3444, avg=1414.39, stdev=1758.76 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 70.00th=[ 3440], 80.00th=[ 3440], 90.00th=[ 3440], 95.00th=[ 3440], | 99.00th=[ 3440], 99.50th=[ 3440], 99.90th=[ 3440], 99.95th=[ 3440], | 99.99th=[ 3440] bw ( KiB/s): min= 6032, max= 6032, per=91.05%, avg=6032.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.30%, ctx=51, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3296KiB/s (3375kB/s), 828KiB/s-2472KiB/s (848kB/s-2531kB/s), io=16.0MiB (16.8MB), run=4946-4971msec WRITE: bw=6625KiB/s (6784kB/s), 1656KiB/s-2895KiB/s (1696kB/s-2965kB/s), io=32.0MiB (33.6MB), run=4244-4946msec