== sanity test 398b: DIO and buffer IO race ============== 20:09:49 (1787789389) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.75594 s, 8.7 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=144121: Wed Aug 26 20:12:13 2026 read: IOPS=11, BW=47.4KiB/s (48.5kB/s)(5992KiB/126454msec) clat (usec): min=34, max=618085, avg=39606.08, stdev=37480.02 lat (usec): min=35, max=618087, avg=39609.68, stdev=37480.92 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 60], 10.00th=[ 347], 20.00th=[ 15664], | 30.00th=[ 20841], 40.00th=[ 26346], 50.00th=[ 32375], 60.00th=[ 40109], | 70.00th=[ 47973], 80.00th=[ 58459], 90.00th=[ 79168], 95.00th=[ 94897], | 99.00th=[154141], 99.50th=[185598], 99.90th=[513803], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 7, max= 120, per=25.56%, avg=48.31, stdev=23.14, samples=241 iops : min= 1, max= 30, avg=11.44, stdev= 5.82, samples=241 write: IOPS=12, BW=49.8KiB/s (50.0kB/s)(6296KiB/126454msec); 0 zone resets clat (usec): min=768, max=691769, avg=42380.99, stdev=49916.91 lat (usec): min=769, max=691770, avg=42382.91, stdev=49916.60 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1139], 10.00th=[ 1270], 20.00th=[ 3163], | 30.00th=[ 7963], 40.00th=[ 17433], 50.00th=[ 28967], 60.00th=[ 39584], | 70.00th=[ 54264], 80.00th=[ 71828], 90.00th=[101188], 95.00th=[127402], | 99.00th=[210764], 99.50th=[278922], 99.90th=[425722], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 7, max= 192, per=25.35%, avg=50.20, stdev=24.36, samples=244 iops : min= 1, max= 48, avg=11.92, stdev= 6.13, samples=244 lat (usec) : 50=0.55%, 100=3.94%, 250=0.36%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.42% lat (msec) : 2=7.75%, 4=3.65%, 10=6.18%, 20=12.21%, 50=35.03% lat (msec) : 100=22.36%, 250=6.97%, 500=0.36%, 750=0.10% cpu : usr=0.08%, sys=5.06%, ctx=6331, 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=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=144122: Wed Aug 26 20:12:13 2026 read: IOPS=11, BW=46.0KiB/s (48.1kB/s)(5940KiB/126423msec) clat (usec): min=25, max=394666, avg=40500.86, stdev=34682.50 lat (usec): min=25, max=394667, avg=40502.54, stdev=34682.61 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 281], 20.00th=[ 16188], | 30.00th=[ 21627], 40.00th=[ 26870], 50.00th=[ 32113], 60.00th=[ 38011], | 70.00th=[ 47973], 80.00th=[ 63701], 90.00th=[ 83362], 95.00th=[101188], | 99.00th=[152044], 99.50th=[185598], 99.90th=[341836], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 7, max= 120, per=24.76%, avg=46.81, stdev=22.76, samples=247 iops : min= 1, max= 30, avg=11.06, stdev= 5.73, samples=247 write: IOPS=12, BW=50.2KiB/s (51.4kB/s)(6348KiB/126423msec); 0 zone resets clat (usec): min=669, max=513086, avg=41482.54, stdev=48993.21 lat (usec): min=669, max=513087, avg=41484.85, stdev=48992.86 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1156], 10.00th=[ 1385], 20.00th=[ 3818], | 30.00th=[ 8356], 40.00th=[ 18220], 50.00th=[ 27395], 60.00th=[ 38011], | 70.00th=[ 49546], 80.00th=[ 67634], 90.00th=[100140], 95.00th=[133694], | 99.00th=[210764], 99.50th=[254804], 99.90th=[492831], 99.95th=[513803], | 99.99th=[513803] bw ( KiB/s): min= 7, max= 184, per=25.31%, avg=50.12, stdev=26.05, samples=246 iops : min= 1, max= 46, avg=11.89, stdev= 6.57, samples=246 lat (usec) : 50=0.46%, 100=3.94%, 250=0.42%, 500=0.10%, 750=0.20% lat (usec) : 1000=0.36% lat (msec) : 2=6.48%, 4=4.04%, 10=6.64%, 20=11.98%, 50=36.30% lat (msec) : 100=21.42%, 250=7.36%, 500=0.29%, 750=0.03% cpu : usr=0.08%, sys=5.13%, ctx=6331, 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=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=144123: Wed Aug 26 20:12:13 2026 read: IOPS=12, BW=48.1KiB/s (49.2kB/s)(6028KiB/125384msec) clat (usec): min=22, max=522266, avg=39752.49, stdev=34997.36 lat (usec): min=23, max=522267, avg=39763.32, stdev=34988.97 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 57], 10.00th=[ 81], 20.00th=[ 15795], | 30.00th=[ 21627], 40.00th=[ 26346], 50.00th=[ 31589], 60.00th=[ 38536], | 70.00th=[ 46924], 80.00th=[ 58983], 90.00th=[ 81265], 95.00th=[101188], | 99.00th=[156238], 99.50th=[168821], 99.90th=[233833], 99.95th=[522191], | 99.99th=[522191] bw ( KiB/s): min= 7, max= 119, per=25.34%, avg=47.89, stdev=22.35, samples=245 iops : min= 1, max= 29, avg=11.33, stdev= 5.61, samples=245 write: IOPS=12, BW=49.9KiB/s (51.1kB/s)(6260KiB/125384msec); 0 zone resets clat (usec): min=751, max=653522, avg=41553.71, stdev=47027.06 lat (usec): min=752, max=653524, avg=41576.40, stdev=47083.79 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1156], 10.00th=[ 1369], 20.00th=[ 3818], | 30.00th=[ 8717], 40.00th=[ 19530], 50.00th=[ 29230], 60.00th=[ 39060], | 70.00th=[ 53216], 80.00th=[ 70779], 90.00th=[ 99091], 95.00th=[124257], | 99.00th=[206570], 99.50th=[231736], 99.90th=[492831], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 7, max= 126, per=25.00%, avg=49.50, stdev=21.95, samples=246 iops : min= 1, max= 31, avg=11.74, stdev= 5.53, samples=246 lat (usec) : 50=1.07%, 100=4.07%, 250=0.42%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.16% lat (msec) : 2=7.10%, 4=3.16%, 10=6.61%, 20=11.17%, 50=36.13% lat (msec) : 100=22.56%, 250=7.19%, 500=0.10%, 750=0.07% cpu : usr=0.07%, sys=5.17%, ctx=6323, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144124: Wed Aug 26 20:12:13 2026 read: IOPS=12, BW=48.2KiB/s (49.3kB/s)(6052KiB/125628msec) clat (usec): min=33, max=493579, avg=40098.32, stdev=35833.57 lat (usec): min=33, max=493581, avg=40101.06, stdev=35833.10 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 59], 10.00th=[ 285], 20.00th=[ 15795], | 30.00th=[ 21103], 40.00th=[ 26346], 50.00th=[ 32375], 60.00th=[ 39060], | 70.00th=[ 47449], 80.00th=[ 60556], 90.00th=[ 81265], 95.00th=[102237], | 99.00th=[147850], 99.50th=[187696], 99.90th=[408945], 99.95th=[492831], | 99.99th=[492831] bw ( KiB/s): min= 7, max= 143, per=25.42%, avg=48.04, stdev=23.95, samples=245 iops : min= 1, max= 35, avg=11.37, stdev= 6.01, samples=245 write: IOPS=12, BW=49.6KiB/s (50.8kB/s)(6236KiB/125628msec); 0 zone resets clat (usec): min=782, max=695521, avg=41376.50, stdev=48998.26 lat (usec): min=784, max=695522, avg=41378.03, stdev=48998.30 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1172], 10.00th=[ 1401], 20.00th=[ 3589], | 30.00th=[ 8029], 40.00th=[ 17171], 50.00th=[ 28443], 60.00th=[ 39060], | 70.00th=[ 53216], 80.00th=[ 67634], 90.00th=[ 96994], 95.00th=[126354], | 99.00th=[221250], 99.50th=[267387], 99.90th=[371196], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 7, max= 134, per=25.07%, avg=49.64, stdev=25.36, samples=244 iops : min= 1, max= 33, avg=11.78, stdev= 6.36, samples=244 lat (usec) : 50=0.75%, 100=3.74%, 250=0.42%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.49% lat (msec) : 2=6.90%, 4=3.78%, 10=6.35%, 20=12.47%, 50=34.83% lat (msec) : 100=22.92%, 250=6.74%, 500=0.39%, 750=0.03% cpu : usr=0.06%, sys=5.18%, ctx=6298, 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=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=190KiB/s (194kB/s), 46.0KiB/s-48.2KiB/s (48.1kB/s-49.3kB/s), io=23.4MiB (24.6MB), run=125384-126454msec WRITE: bw=199KiB/s (204kB/s), 49.6KiB/s-50.2KiB/s (50.8kB/s-51.4kB/s), io=24.6MiB (25.7MB), run=125384-126454msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144126: Wed Aug 26 20:13:59 2026 read: IOPS=6, BW=25.8KiB/s (26.4kB/s)(5992KiB/232114msec) clat (msec): min=4, max=756, avg=31.31, stdev=42.73 lat (msec): min=4, max=756, avg=31.31, stdev=42.73 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 41], 90.00th=[ 75], 95.00th=[ 107], | 99.00th=[ 190], 99.50th=[ 224], 99.90th=[ 558], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 119, per=28.27%, avg=29.12, stdev=21.48, samples=399 iops : min= 1, max= 29, avg= 6.65, stdev= 5.42, samples=399 write: IOPS=6, BW=27.1KiB/s (27.8kB/s)(6296KiB/232114msec); 0 zone resets clat (msec): min=26, max=646, avg=117.46, stdev=76.99 lat (msec): min=28, max=646, avg=117.46, stdev=76.99 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 48], 10.00th=[ 54], 20.00th=[ 62], | 30.00th=[ 71], 40.00th=[ 81], 50.00th=[ 91], 60.00th=[ 106], | 70.00th=[ 128], 80.00th=[ 163], 90.00th=[ 220], 95.00th=[ 271], | 99.00th=[ 409], 99.50th=[ 477], 99.90th=[ 592], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 7, max= 72, per=25.26%, avg=27.28, stdev=15.43, samples=446 iops : min= 1, max= 18, avg= 6.19, stdev= 3.94, samples=446 lat (msec) : 10=8.85%, 20=20.12%, 50=14.91%, 100=30.86%, 250=21.74% lat (msec) : 500=3.26%, 750=0.23%, 1000=0.03% cpu : usr=0.05%, sys=1.18%, ctx=5221, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144127: Wed Aug 26 20:13:59 2026 read: IOPS=6, BW=25.6KiB/s (26.2kB/s)(5940KiB/231922msec) clat (msec): min=4, max=740, avg=30.15, stdev=42.51 lat (msec): min=4, max=740, avg=30.15, stdev=42.51 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 26], 80.00th=[ 40], 90.00th=[ 69], 95.00th=[ 97], | 99.00th=[ 184], 99.50th=[ 218], 99.90th=[ 718], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 134, per=28.72%, avg=29.58, stdev=21.33, samples=390 iops : min= 1, max= 33, avg= 6.77, stdev= 5.39, samples=390 write: IOPS=6, BW=27.4KiB/s (28.0kB/s)(6348KiB/231922msec); 0 zone resets clat (msec): min=26, max=627, avg=117.73, stdev=77.46 lat (msec): min=26, max=627, avg=117.73, stdev=77.46 clat percentiles (msec): | 1.00th=[ 37], 5.00th=[ 47], 10.00th=[ 54], 20.00th=[ 63], | 30.00th=[ 72], 40.00th=[ 82], 50.00th=[ 92], 60.00th=[ 105], | 70.00th=[ 127], 80.00th=[ 163], 90.00th=[ 222], 95.00th=[ 266], | 99.00th=[ 393], 99.50th=[ 510], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 7, max= 71, per=25.29%, avg=27.32, stdev=15.68, samples=450 iops : min= 1, max= 17, avg= 6.20, stdev= 4.00, samples=450 lat (msec) : 10=9.73%, 20=19.60%, 50=14.71%, 100=31.38%, 250=21.13% lat (msec) : 500=3.12%, 750=0.33% cpu : usr=0.04%, sys=1.16%, ctx=5192, 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=144128: Wed Aug 26 20:13:59 2026 read: IOPS=6, BW=25.0KiB/s (26.6kB/s)(6028KiB/232145msec) clat (msec): min=4, max=339, avg=31.49, stdev=36.27 lat (msec): min=4, max=339, avg=31.49, stdev=36.27 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 29], 80.00th=[ 46], 90.00th=[ 79], 95.00th=[ 104], | 99.00th=[ 163], 99.50th=[ 228], 99.90th=[ 326], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 7, max= 135, per=27.53%, avg=28.36, stdev=20.63, samples=412 iops : min= 1, max= 33, avg= 6.47, stdev= 5.22, samples=412 write: IOPS=6, BW=26.0KiB/s (27.6kB/s)(6260KiB/232145msec); 0 zone resets clat (msec): min=28, max=750, avg=117.76, stdev=77.18 lat (msec): min=28, max=750, avg=117.77, stdev=77.18 clat percentiles (msec): | 1.00th=[ 38], 5.00th=[ 47], 10.00th=[ 54], 20.00th=[ 63], | 30.00th=[ 72], 40.00th=[ 82], 50.00th=[ 93], 60.00th=[ 107], | 70.00th=[ 125], 80.00th=[ 163], 90.00th=[ 222], 95.00th=[ 271], | 99.00th=[ 393], 99.50th=[ 456], 99.90th=[ 709], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 71, per=25.01%, avg=27.02, stdev=15.72, samples=448 iops : min= 1, max= 17, avg= 6.12, stdev= 4.00, samples=448 lat (msec) : 10=8.76%, 20=19.89%, 50=15.14%, 100=30.86%, 250=21.68% lat (msec) : 500=3.52%, 750=0.13%, 1000=0.03% cpu : usr=0.05%, sys=1.19%, ctx=5221, 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=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=144129: Wed Aug 26 20:13:59 2026 read: IOPS=6, BW=26.1KiB/s (26.7kB/s)(6052KiB/231714msec) clat (msec): min=4, max=316, avg=29.82, stdev=35.76 lat (msec): min=4, max=316, avg=29.82, stdev=35.76 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 26], 80.00th=[ 41], 90.00th=[ 69], 95.00th=[ 105], | 99.00th=[ 178], 99.50th=[ 220], 99.90th=[ 305], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 7, max= 144, per=29.05%, avg=29.92, stdev=21.81, samples=392 iops : min= 1, max= 36, avg= 6.85, stdev= 5.51, samples=392 write: IOPS=6, BW=26.9KiB/s (27.6kB/s)(6236KiB/231714msec); 0 zone resets clat (msec): min=25, max=752, avg=119.45, stdev=80.83 lat (msec): min=25, max=752, avg=119.46, stdev=80.83 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 47], 10.00th=[ 53], 20.00th=[ 63], | 30.00th=[ 71], 40.00th=[ 81], 50.00th=[ 92], 60.00th=[ 110], | 70.00th=[ 132], 80.00th=[ 167], 90.00th=[ 224], 95.00th=[ 275], | 99.00th=[ 435], 99.50th=[ 489], 99.90th=[ 718], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 72, per=24.81%, avg=26.79, stdev=15.35, samples=449 iops : min= 1, max= 18, avg= 6.06, stdev= 3.92, samples=449 lat (msec) : 10=9.34%, 20=20.74%, 50=15.36%, 100=29.75%, 250=21.19% lat (msec) : 500=3.39%, 750=0.20%, 1000=0.03% cpu : usr=0.05%, sys=1.21%, ctx=5333, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=103KiB/s (106kB/s), 25.6KiB/s-26.1KiB/s (26.2kB/s-26.7kB/s), io=23.4MiB (24.6MB), run=231714-232145msec WRITE: bw=108KiB/s (111kB/s), 26.9KiB/s-27.4KiB/s (27.6kB/s-28.0kB/s), io=24.6MiB (25.7MB), run=231714-232145msec 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=144176: Wed Aug 26 20:14:33 2026 read: IOPS=13, BW=219KiB/s (224kB/s)(5920KiB/27022msec) clat (usec): min=34, max=209525, avg=36136.38, stdev=33138.24 lat (usec): min=34, max=209527, avg=36137.52, stdev=33138.22 clat percentiles (usec): | 1.00th=[ 36], 5.00th=[ 49], 10.00th=[ 58], 20.00th=[ 70], | 30.00th=[ 17695], 40.00th=[ 24511], 50.00th=[ 31327], 60.00th=[ 40109], | 70.00th=[ 47973], 80.00th=[ 60031], 90.00th=[ 79168], 95.00th=[ 92799], | 99.00th=[145753], 99.50th=[191890], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 447, per=25.50%, avg=222.65, stdev=90.88, samples=52 iops : min= 1, max= 27, avg=13.13, stdev= 5.77, samples=52 write: IOPS=14, BW=236KiB/s (241kB/s)(6368KiB/27022msec); 0 zone resets clat (usec): min=1272, max=249300, avg=33841.46, stdev=41658.88 lat (usec): min=1274, max=249303, avg=33868.70, stdev=41681.27 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1614], 10.00th=[ 1876], 20.00th=[ 4146], | 30.00th=[ 6652], 40.00th=[ 9896], 50.00th=[ 15664], 60.00th=[ 27919], | 70.00th=[ 40633], 80.00th=[ 60031], 90.00th=[ 86508], 95.00th=[123208], | 99.00th=[202376], 99.50th=[221250], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 606, per=25.71%, avg=235.98, stdev=110.04, samples=53 iops : min= 1, max= 37, avg=13.98, stdev= 6.92, samples=53 lat (usec) : 50=2.47%, 100=8.98%, 250=1.04%, 750=0.26% lat (msec) : 2=5.60%, 4=4.30%, 10=11.07%, 20=9.77%, 50=30.47% lat (msec) : 100=20.31%, 250=5.73% cpu : usr=0.07%, sys=6.55%, ctx=1388, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144177: Wed Aug 26 20:14:33 2026 read: IOPS=13, BW=217KiB/s (222kB/s)(5744KiB/26523msec) clat (usec): min=38, max=295277, avg=38025.47, stdev=36618.81 lat (usec): min=38, max=295277, avg=38026.69, stdev=36618.62 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 69], 20.00th=[ 137], | 30.00th=[ 19530], 40.00th=[ 25297], 50.00th=[ 32375], 60.00th=[ 39060], | 70.00th=[ 46400], 80.00th=[ 57934], 90.00th=[ 81265], 95.00th=[109577], | 99.00th=[154141], 99.50th=[191890], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 63, max= 443, per=24.78%, avg=216.35, stdev=82.46, samples=52 iops : min= 3, max= 27, avg=12.73, stdev= 5.18, samples=52 write: IOPS=15, BW=247KiB/s (253kB/s)(6544KiB/26523msec); 0 zone resets clat (usec): min=990, max=226265, avg=31292.82, stdev=33625.52 lat (usec): min=992, max=226267, avg=31317.77, stdev=33659.14 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1762], 10.00th=[ 2343], 20.00th=[ 4686], | 30.00th=[ 6587], 40.00th=[ 11076], 50.00th=[ 18482], 60.00th=[ 28443], | 70.00th=[ 40633], 80.00th=[ 53740], 90.00th=[ 81265], 95.00th=[107480], | 99.00th=[130548], 99.50th=[132645], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 92, max= 510, per=26.82%, avg=246.19, stdev=99.43, samples=52 iops : min= 5, max= 31, avg=14.62, stdev= 6.28, samples=52 lat (usec) : 50=1.69%, 100=7.03%, 250=0.65%, 500=0.39%, 750=0.52% lat (usec) : 1000=0.39% lat (msec) : 2=3.52%, 4=5.47%, 10=11.59%, 20=10.94%, 50=33.72% lat (msec) : 100=18.10%, 250=5.86%, 500=0.13% cpu : usr=0.07%, sys=5.94%, ctx=1344, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144178: Wed Aug 26 20:14:33 2026 read: IOPS=14, BW=228KiB/s (234kB/s)(6256KiB/27422msec) clat (usec): min=28, max=202654, avg=37142.01, stdev=32890.29 lat (usec): min=28, max=202654, avg=37146.40, stdev=32890.90 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 86], | 30.00th=[ 18220], 40.00th=[ 25822], 50.00th=[ 33162], 60.00th=[ 40109], | 70.00th=[ 49546], 80.00th=[ 61080], 90.00th=[ 77071], 95.00th=[ 96994], | 99.00th=[147850], 99.50th=[181404], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 63, max= 508, per=26.12%, avg=228.02, stdev=91.78, samples=54 iops : min= 3, max= 31, avg=13.50, stdev= 5.80, samples=54 write: IOPS=13, BW=220KiB/s (225kB/s)(6032KiB/27422msec); 0 zone resets clat (usec): min=1140, max=218006, avg=33770.98, stdev=36389.40 lat (usec): min=1141, max=218006, avg=33775.82, stdev=36389.22 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1631], 10.00th=[ 2089], 20.00th=[ 4146], | 30.00th=[ 7439], 40.00th=[ 11994], 50.00th=[ 20579], 60.00th=[ 32113], | 70.00th=[ 45351], 80.00th=[ 61604], 90.00th=[ 80217], 95.00th=[102237], | 99.00th=[173016], 99.50th=[212861], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 62, max= 415, per=23.87%, avg=219.17, stdev=82.75, samples=54 iops : min= 3, max= 25, avg=12.93, stdev= 5.22, samples=54 lat (usec) : 50=1.56%, 100=9.24%, 250=0.65%, 750=0.13%, 1000=0.13% lat (msec) : 2=5.08%, 4=4.69%, 10=8.46%, 20=10.29%, 50=31.38% lat (msec) : 100=23.96%, 250=4.43% cpu : usr=0.08%, sys=5.78%, ctx=1432, 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=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=144179: Wed Aug 26 20:14:33 2026 read: IOPS=14, BW=234KiB/s (240kB/s)(6032KiB/25766msec) clat (usec): min=37, max=184674, avg=34569.37, stdev=34541.84 lat (usec): min=37, max=184676, avg=34570.36, stdev=34541.85 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 46], 10.00th=[ 58], 20.00th=[ 68], | 30.00th=[ 1516], 40.00th=[ 21365], 50.00th=[ 29230], 60.00th=[ 36439], | 70.00th=[ 45876], 80.00th=[ 59507], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[137364], 99.50th=[145753], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 63, max= 479, per=26.79%, avg=233.92, stdev=104.33, samples=50 iops : min= 3, max= 29, avg=13.84, stdev= 6.53, samples=50 write: IOPS=15, BW=243KiB/s (249kB/s)(6256KiB/25766msec); 0 zone resets clat (usec): min=1079, max=215608, avg=31941.20, stdev=38942.65 lat (usec): min=1081, max=215611, avg=31946.60, stdev=38940.77 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1647], 10.00th=[ 2147], 20.00th=[ 3621], | 30.00th=[ 6259], 40.00th=[ 9503], 50.00th=[ 14746], 60.00th=[ 24249], | 70.00th=[ 40109], 80.00th=[ 57410], 90.00th=[ 82314], 95.00th=[102237], | 99.00th=[196084], 99.50th=[212861], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 62, max= 539, per=26.56%, avg=243.80, stdev=113.94, samples=50 iops : min= 3, max= 33, avg=14.46, stdev= 7.20, samples=50 lat (usec) : 50=2.86%, 100=10.68%, 250=1.04%, 500=0.13% lat (msec) : 2=4.82%, 4=7.03%, 10=10.55%, 20=10.03%, 50=28.13% lat (msec) : 100=19.14%, 250=5.60% cpu : usr=0.09%, sys=5.99%, ctx=1293, 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=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=873KiB/s (894kB/s), 217KiB/s-234KiB/s (222kB/s-240kB/s), io=23.4MiB (24.5MB), run=25766-27422msec WRITE: bw=919KiB/s (941kB/s), 220KiB/s-247KiB/s (225kB/s-253kB/s), io=24.6MiB (25.8MB), run=25766-27422msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144181: Wed Aug 26 20:15:06 2026 read: IOPS=6, BW=98.9KiB/s (101kB/s)(5920KiB/59866msec) clat (msec): min=6, max=338, avg=33.90, stdev=43.23 lat (msec): min=6, max=338, avg=33.90, stdev=43.23 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 39], 90.00th=[ 77], 95.00th=[ 107], | 99.00th=[ 255], 99.50th=[ 275], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 29, max= 576, per=26.95%, avg=107.80, stdev=80.24, samples=107 iops : min= 1, max= 36, avg= 6.02, stdev= 5.12, samples=107 write: IOPS=6, BW=106KiB/s (109kB/s)(6368KiB/59866msec); 0 zone resets clat (msec): min=31, max=442, avg=118.74, stdev=68.57 lat (msec): min=31, max=442, avg=118.74, stdev=68.57 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 53], 10.00th=[ 59], 20.00th=[ 68], | 30.00th=[ 78], 40.00th=[ 86], 50.00th=[ 96], 60.00th=[ 108], | 70.00th=[ 124], 80.00th=[ 165], 90.00th=[ 220], 95.00th=[ 271], | 99.00th=[ 351], 99.50th=[ 363], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 29, max= 223, per=26.03%, avg=109.33, stdev=53.35, samples=114 iops : min= 1, max= 13, avg= 6.11, stdev= 3.38, samples=114 lat (msec) : 10=4.43%, 20=20.44%, 50=17.84%, 100=30.08%, 250=23.18% lat (msec) : 500=4.04% cpu : usr=0.05%, sys=1.26%, ctx=1323, 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=144182: Wed Aug 26 20:15:06 2026 read: IOPS=6, BW=96.7KiB/s (98.0kB/s)(5744KiB/59422msec) clat (msec): min=6, max=221, avg=32.49, stdev=33.02 lat (msec): min=6, max=221, avg=32.50, stdev=33.02 clat percentiles (msec): | 1.00th=[ 8], 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=[ 43], 90.00th=[ 81], 95.00th=[ 103], | 99.00th=[ 167], 99.50th=[ 184], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 29, max= 384, per=27.84%, avg=111.38, stdev=73.10, samples=101 iops : min= 1, max= 24, avg= 6.23, stdev= 4.71, samples=101 write: IOPS=6, BW=110KiB/s (113kB/s)(6544KiB/59422msec); 0 zone resets clat (msec): min=32, max=379, avg=116.59, stdev=65.46 lat (msec): min=32, max=379, avg=116.59, stdev=65.46 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 53], 10.00th=[ 58], 20.00th=[ 68], | 30.00th=[ 77], 40.00th=[ 87], 50.00th=[ 96], 60.00th=[ 108], | 70.00th=[ 128], 80.00th=[ 163], 90.00th=[ 201], 95.00th=[ 264], | 99.00th=[ 351], 99.50th=[ 368], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 29, max= 255, per=26.31%, avg=110.51, stdev=54.63, samples=116 iops : min= 1, max= 15, avg= 6.18, stdev= 3.48, samples=116 lat (msec) : 10=4.04%, 20=19.01%, 50=17.58%, 100=31.90%, 250=24.61% lat (msec) : 500=2.86% cpu : usr=0.03%, sys=1.33%, ctx=1382, 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=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=144183: Wed Aug 26 20:15:06 2026 read: IOPS=6, BW=107KiB/s (110kB/s)(6256KiB/58490msec) clat (msec): min=6, max=334, avg=32.32, stdev=38.67 lat (msec): min=6, max=334, avg=32.32, stdev=38.67 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 17], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 37], 90.00th=[ 64], 95.00th=[ 110], | 99.00th=[ 220], 99.50th=[ 275], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 30, max= 383, per=29.79%, avg=119.17, stdev=91.20, samples=104 iops : min= 1, max= 23, avg= 6.73, stdev= 5.74, samples=104 write: IOPS=6, BW=103KiB/s (106kB/s)(6032KiB/58490msec); 0 zone resets clat (msec): min=36, max=381, avg=121.51, stdev=65.91 lat (msec): min=36, max=381, avg=121.51, stdev=65.91 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 53], 10.00th=[ 60], 20.00th=[ 70], | 30.00th=[ 81], 40.00th=[ 91], 50.00th=[ 102], 60.00th=[ 117], | 70.00th=[ 134], 80.00th=[ 165], 90.00th=[ 218], 95.00th=[ 275], | 99.00th=[ 338], 99.50th=[ 359], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 30, max= 224, per=25.16%, avg=105.67, stdev=48.87, samples=112 iops : min= 1, max= 14, avg= 5.88, stdev= 3.16, samples=112 lat (msec) : 10=4.82%, 20=22.66%, 50=18.75%, 100=25.13%, 250=25.26% lat (msec) : 500=3.39% cpu : usr=0.05%, sys=1.30%, ctx=1280, 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=144184: Wed Aug 26 20:15:06 2026 read: IOPS=6, BW=101KiB/s (103kB/s)(6032KiB/59689msec) clat (msec): min=6, max=258, avg=33.98, stdev=35.45 lat (msec): min=6, max=258, avg=33.99, stdev=35.45 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 46], 90.00th=[ 82], 95.00th=[ 115], | 99.00th=[ 188], 99.50th=[ 194], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 31, max= 318, per=27.90%, avg=111.58, stdev=71.20, samples=106 iops : min= 1, max= 19, avg= 6.24, stdev= 4.52, samples=106 write: IOPS=6, BW=105KiB/s (107kB/s)(6256KiB/59689msec); 0 zone resets clat (msec): min=34, max=403, avg=119.68, stdev=62.31 lat (msec): min=34, max=403, avg=119.68, stdev=62.31 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 54], 10.00th=[ 63], 20.00th=[ 72], | 30.00th=[ 82], 40.00th=[ 92], 50.00th=[ 100], 60.00th=[ 112], | 70.00th=[ 133], 80.00th=[ 155], 90.00th=[ 220], 95.00th=[ 249], | 99.00th=[ 338], 99.50th=[ 359], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 29, max= 224, per=24.96%, avg=104.85, stdev=50.42, samples=118 iops : min= 1, max= 14, avg= 5.82, stdev= 3.24, samples=118 lat (msec) : 10=3.12%, 20=20.57%, 50=17.71%, 100=30.21%, 250=25.91% lat (msec) : 500=2.47% cpu : usr=0.06%, sys=1.37%, ctx=1337, 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=400KiB/s (410kB/s), 96.7KiB/s-107KiB/s (98.0kB/s-110kB/s), io=23.4MiB (24.5MB), run=58490-59866msec WRITE: bw=421KiB/s (431kB/s), 103KiB/s-110KiB/s (106kB/s-113kB/s), io=24.6MiB (25.8MB), run=58490-59866msec 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=144198: Wed Aug 26 20:15:22 2026 read: IOPS=1, BW=1466KiB/s (1502kB/s)(7168KiB/4888msec) clat (usec): min=582, max=2664.6k, avg=510994.16, stdev=952934.61 lat (usec): min=583, max=2664.6k, avg=510995.81, stdev=952934.54 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], | 20.00th=[ 130548], 30.00th=[ 137364], 40.00th=[ 137364], | 50.00th=[ 175113], 60.00th=[ 231736], 70.00th=[ 231736], | 80.00th=[ 235930], 90.00th=[2667578], 95.00th=[2667578], | 99.00th=[2667578], 99.50th=[2667578], 99.90th=[2667578], | 99.95th=[2667578], 99.99th=[2667578] bw ( KiB/s): min= 2027, max= 4063, per=82.50%, avg=2756.25, stdev=961.49, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1047KiB/s (1073kB/s)(5120KiB/4888msec); 0 zone resets clat (msec): min=122, max=330, avg=223.13, stdev=91.69 lat (msec): min=123, max=330, avg=224.37, stdev=90.26 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 255], 60.00th=[ 255], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 2027, max= 4096, per=58.16%, avg=2720.67, stdev=1191.09, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=58.33%, 500=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=11.77%, ctx=705, 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=144199: Wed Aug 26 20:15:22 2026 read: IOPS=0, BW=334KiB/s (342kB/s)(2048KiB/6129msec) clat (usec): min=1055, max=161032, avg=81044.02, stdev=113121.10 lat (usec): min=1056, max=161036, avg=81046.51, stdev=113122.55 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1057], 10.00th=[ 1057], 20.00th=[ 1057], | 30.00th=[ 1057], 40.00th=[ 1057], 50.00th=[ 1057], 60.00th=[160433], | 70.00th=[160433], 80.00th=[160433], 90.00th=[160433], 95.00th=[160433], | 99.00th=[160433], 99.50th=[160433], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 1418, max= 2039, per=51.74%, avg=1728.50, stdev=439.11, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1671KiB/s (1711kB/s)(10.0MiB/6129msec); 0 zone resets clat (msec): min=88, max=3244, avg=589.62, stdev=948.04 lat (msec): min=88, max=3245, avg=589.92, stdev=948.00 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 105], | 30.00th=[ 115], 40.00th=[ 203], 50.00th=[ 279], 60.00th=[ 418], | 70.00th=[ 422], 80.00th=[ 451], 90.00th=[ 575], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 1976, max= 6107, per=77.67%, avg=3633.60, stdev=2225.29, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 2.19, samples=5 lat (msec) : 2=8.33%, 100=8.33%, 250=33.33%, 500=33.33%, 750=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.07%, sys=7.70%, ctx=108, 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=144201: Wed Aug 26 20:15:22 2026 read: IOPS=1, BW=1054KiB/s (1079kB/s)(6144KiB/5830msec) clat (usec): min=527, max=276696, avg=130091.49, stdev=140795.73 lat (usec): min=529, max=276696, avg=130092.67, stdev=140795.56 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 545], | 30.00th=[ 545], 40.00th=[ 4686], 50.00th=[ 4686], 60.00th=[246416], | 70.00th=[252707], 80.00th=[252707], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 4096, max= 6035, per=100.00%, avg=5065.50, stdev=1371.08, samples=2 iops : min= 4, max= 5, avg= 4.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1054KiB/s (1079kB/s)(6144KiB/5830msec); 0 zone resets clat (msec): min=164, max=2937, avg=793.93, stdev=1062.46 lat (msec): min=164, max=2937, avg=794.03, stdev=1062.46 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 347], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 2937], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 1410, max= 4023, per=49.28%, avg=2305.40, stdev=997.24, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 750=16.67% lat (msec) : 10=8.33%, 250=16.67%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=7.15%, ctx=162, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144202: Wed Aug 26 20:15:22 2026 read: IOPS=1, BW=1063KiB/s (1089kB/s)(5120KiB/4816msec) clat (usec): min=502, max=240752, avg=80144.89, stdev=112781.57 lat (usec): min=503, max=240753, avg=80146.37, stdev=112781.26 clat percentiles (usec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 586], 40.00th=[ 586], 50.00th=[ 668], 60.00th=[ 668], | 70.00th=[158335], 80.00th=[158335], 90.00th=[240124], 95.00th=[240124], | 99.00th=[240124], 99.50th=[240124], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1488KiB/s (1524kB/s)(7168KiB/4816msec); 0 zone resets clat (msec): min=130, max=2822, avg=602.70, stdev=980.74 lat (msec): min=130, max=2850, avg=606.85, stdev=991.42 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 209], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 228], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 321], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 1422, max= 4079, per=62.06%, avg=2903.00, stdev=1372.71, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (usec) : 750=25.00% lat (msec) : 250=50.00%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=9.24%, ctx=131, 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=3341KiB/s (3422kB/s), 334KiB/s-1466KiB/s (342kB/s-1502kB/s), io=20.0MiB (20.0MB), run=4816-6129msec WRITE: bw=4678KiB/s (4790kB/s), 1047KiB/s-1671KiB/s (1073kB/s-1711kB/s), io=28.0MiB (29.4MB), run=4816-6129msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144203: Wed Aug 26 20:15:22 2026 read: IOPS=1, BW=1224KiB/s (1253kB/s)(7168KiB/5857msec) clat (msec): min=90, max=2617, avg=577.71, stdev=911.02 lat (msec): min=90, max=2617, avg=577.71, stdev=911.02 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 159], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 218], 60.00th=[ 245], | 70.00th=[ 245], 80.00th=[ 542], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 1885, max= 2760, per=72.52%, avg=2145.20, stdev=349.22, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=0, BW=874KiB/s (895kB/s)(5120KiB/5857msec); 0 zone resets clat (msec): min=153, max=462, avg=326.38, stdev=119.44 lat (msec): min=153, max=462, avg=326.62, stdev=119.55 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 414], 80.00th=[ 414], 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= 2019, max= 4079, per=61.30%, avg=2539.00, stdev=1026.71, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=3.11%, ctx=139, 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=144204: Wed Aug 26 20:15:22 2026 read: IOPS=0, BW=304KiB/s (312kB/s)(2048KiB/6726msec) clat (msec): min=92, max=409, avg=250.98, stdev=224.64 lat (msec): min=92, max=409, avg=250.99, stdev=224.64 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=[ 409], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 1454, max= 2019, per=58.71%, avg=1736.50, stdev=399.52, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1522KiB/s (1559kB/s)(10.0MiB/6726msec); 0 zone resets clat (msec): min=103, max=3673, avg=601.71, stdev=1091.98 lat (msec): min=103, max=3673, avg=602.03, stdev=1091.94 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 142], | 30.00th=[ 144], 40.00th=[ 155], 50.00th=[ 165], 60.00th=[ 292], | 70.00th=[ 296], 80.00th=[ 393], 90.00th=[ 659], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 2019, max= 6119, per=78.59%, avg=3255.20, stdev=1828.97, samples=5 iops : min= 1, max= 5, avg= 2.40, stdev= 1.67, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.83%, ctx=92, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144205: Wed Aug 26 20:15:22 2026 read: IOPS=1, BW=1044KiB/s (1069kB/s)(6144KiB/5884msec) clat (msec): min=64, max=448, avg=170.42, stdev=141.45 lat (msec): min=64, max=448, avg=170.43, stdev=141.45 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 96], | 30.00th=[ 96], 40.00th=[ 112], 50.00th=[ 112], 60.00th=[ 121], | 70.00th=[ 184], 80.00th=[ 184], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 2035, max= 4079, per=100.00%, avg=3379.00, stdev=1164.27, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1044KiB/s (1069kB/s)(6144KiB/5884msec); 0 zone resets clat (msec): min=256, max=2893, avg=799.05, stdev=1039.23 lat (msec): min=256, max=2893, avg=799.17, stdev=1039.27 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 418], | 70.00th=[ 684], 80.00th=[ 684], 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= 1885, max= 2039, per=48.16%, avg=1994.80, stdev=63.74, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=2.75%, ctx=62, 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=144206: Wed Aug 26 20:15:22 2026 read: IOPS=0, BW=740KiB/s (757kB/s)(5120KiB/6922msec) clat (msec): min=71, max=409, avg=234.76, stdev=136.61 lat (msec): min=71, max=409, avg=234.76, stdev=136.61 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 186], 60.00th=[ 186], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 4039, max= 4071, per=100.00%, avg=4055.00, stdev=22.63, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1036KiB/s (1060kB/s)(7168KiB/6922msec); 0 zone resets clat (msec): min=160, max=3360, avg=791.73, stdev=1151.80 lat (msec): min=160, max=3360, avg=791.86, stdev=1151.78 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 174], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 305], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 659], 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= 1885, max= 4079, per=58.28%, avg=2414.00, stdev=933.10, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.72%, ctx=83, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2959KiB/s (3030kB/s), 304KiB/s-1224KiB/s (312kB/s-1253kB/s), io=20.0MiB (20.0MB), run=5857-6922msec WRITE: bw=4142KiB/s (4242kB/s), 874KiB/s-1522KiB/s (895kB/s-1559kB/s), io=28.0MiB (29.4MB), run=5857-6922msec 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=144218: Wed Aug 26 20:15:34 2026 read: IOPS=1, BW=6113KiB/s (6260kB/s)(12.0MiB/2010msec) clat (msec): min=488, max=717, avg=633.84, stdev=126.03 lat (msec): min=488, max=717, avg=633.84, stdev=126.03 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 8126, max= 8175, per=100.00%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=16.58%, ctx=344, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144219: Wed Aug 26 20:15:34 2026 read: IOPS=0, BW=1750KiB/s (1792kB/s)(4096KiB/2340msec) clat (nsec): min=599773k, max=599773k, avg=599772732.00, stdev= 0.00 lat (nsec): min=599776k, max=599776k, avg=599775547.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3501KiB/s (3585kB/s)(8192KiB/2340msec); 0 zone resets clat (msec): min=722, max=837, avg=779.76, stdev=81.13 lat (msec): min=722, max=838, avg=780.70, stdev=81.89 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 8175, max= 8175, per=72.48%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=4.79%, ctx=200, 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=144220: Wed Aug 26 20:15:34 2026 write: IOPS=1, BW=4230KiB/s (4331kB/s)(12.0MiB/2905msec); 0 zone resets clat (msec): min=188, max=2086, avg=865.11, stdev=1060.14 lat (msec): min=189, max=2089, avg=866.16, stdev=1061.42 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 2089], 80.00th=[ 2089], 90.00th=[ 2089], 95.00th=[ 2089], | 99.00th=[ 2089], 99.50th=[ 2089], 99.90th=[ 2089], 99.95th=[ 2089], | 99.99th=[ 2089] bw ( KiB/s): min=15968, max=15968, per=100.00%, avg=15968.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.06%, ctx=61, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144221: Wed Aug 26 20:15:34 2026 write: IOPS=1, BW=5478KiB/s (5610kB/s)(12.0MiB/2243msec); 0 zone resets clat (msec): min=398, max=1129, avg=662.93, stdev=405.45 lat (msec): min=398, max=1130, avg=663.31, stdev=405.57 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min=16253, max=16253, per=100.00%, avg=16253.00, 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=4.42%, ctx=79, 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=7002KiB/s (7170kB/s), 1750KiB/s-6113KiB/s (1792kB/s-6260kB/s), io=16.0MiB (16.8MB), run=2010-2340msec WRITE: bw=11.0MiB/s (11.6MB/s), 3501KiB/s-5478KiB/s (3585kB/s-5610kB/s), io=32.0MiB (33.6MB), run=2243-2905msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144214: Wed Aug 26 20:15:35 2026 read: IOPS=1, BW=5868KiB/s (6009kB/s)(12.0MiB/2094msec) clat (msec): min=495, max=1015, avg=670.49, stdev=298.80 lat (msec): min=495, max=1015, avg=670.49, stdev=298.80 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 502], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7968, max= 8159, per=100.00%, avg=8063.50, stdev=135.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.73%, ctx=46, 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=144215: Wed Aug 26 20:15:35 2026 read: IOPS=0, BW=1337KiB/s (1369kB/s)(4096KiB/3063msec) clat (nsec): min=1057.4M, max=1057.4M, avg=1057395353.00, stdev= 0.00 lat (nsec): min=1057.4M, max=1057.4M, avg=1057398908.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1062], 5.00th=[ 1062], 10.00th=[ 1062], 20.00th=[ 1062], | 30.00th=[ 1062], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2675KiB/s (2739kB/s)(8192KiB/3063msec); 0 zone resets clat (msec): min=238, max=1714, avg=976.94, stdev=1043.73 lat (msec): min=239, max=1719, avg=979.60, stdev=1046.75 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 1720], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.30%, ctx=47, 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=144216: Wed Aug 26 20:15:35 2026 write: IOPS=2, BW=9585KiB/s (9815kB/s)(12.0MiB/1282msec); 0 zone resets clat (msec): min=250, max=624, avg=395.07, stdev=201.12 lat (msec): min=250, max=625, avg=395.74, stdev=201.00 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 7275, max= 8031, per=71.54%, avg=7653.00, stdev=534.57, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.23%, sys=8.98%, ctx=64, 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=144217: Wed Aug 26 20:15:35 2026 write: IOPS=1, BW=5896KiB/s (6038kB/s)(12.0MiB/2084msec); 0 zone resets clat (msec): min=244, max=1275, avg=662.07, stdev=542.61 lat (msec): min=245, max=1275, avg=662.58, stdev=542.62 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 6692, max= 8000, per=68.67%, avg=7346.00, stdev=924.90, 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=5.52%, ctx=57, 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=5349KiB/s (5477kB/s), 1337KiB/s-5868KiB/s (1369kB/s-6009kB/s), io=16.0MiB (16.8MB), run=2094-3063msec WRITE: bw=10.4MiB/s (10.0MB/s), 2675KiB/s-9585KiB/s (2739kB/s-9815kB/s), io=32.0MiB (33.6MB), run=1282-3063msec