== sanity test 398b: DIO and buffer IO race ============== 01:37:30 (1787377050) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.87031 s, 10.3 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=144978: Sat Aug 22 01:39:42 2026 read: IOPS=12, BW=51.6KiB/s (52.9kB/s)(5992KiB/116069msec) clat (usec): min=29, max=997985, avg=37298.77, stdev=38002.44 lat (usec): min=30, max=997985, avg=37300.36, stdev=38002.22 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 57], 10.00th=[ 93], 20.00th=[ 16319], | 30.00th=[ 20317], 40.00th=[ 24773], 50.00th=[ 29754], 60.00th=[ 36439], | 70.00th=[ 45351], 80.00th=[ 55837], 90.00th=[ 72877], 95.00th=[ 90702], | 99.00th=[135267], 99.50th=[160433], 99.90th=[261096], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 5, max= 127, per=25.20%, avg=51.91, stdev=25.03, samples=225 iops : min= 1, max= 31, avg=12.33, stdev= 6.29, samples=225 write: IOPS=13, BW=54.2KiB/s (55.5kB/s)(6296KiB/116069msec); 0 zone resets clat (usec): min=723, max=599689, avg=37971.63, stdev=45308.23 lat (usec): min=723, max=599690, avg=37974.42, stdev=45307.94 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1106], 10.00th=[ 1221], 20.00th=[ 2671], | 30.00th=[ 6456], 40.00th=[ 15795], 50.00th=[ 26346], 60.00th=[ 35914], | 70.00th=[ 47449], 80.00th=[ 64226], 90.00th=[ 88605], 95.00th=[117965], | 99.00th=[185598], 99.50th=[229639], 99.90th=[434111], 99.95th=[599786], | 99.99th=[599786] bw ( KiB/s): min= 7, max= 158, per=25.16%, avg=54.34, stdev=24.86, samples=226 iops : min= 1, max= 39, avg=12.94, stdev= 6.26, samples=226 lat (usec) : 50=0.75%, 100=4.20%, 250=0.07%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.55% lat (msec) : 2=8.46%, 4=3.65%, 10=5.99%, 20=12.86%, 50=36.91% lat (msec) : 100=20.64%, 250=5.50%, 500=0.20%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.39%, ctx=6336, majf=0, minf=20 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=144980: Sat Aug 22 01:39:42 2026 read: IOPS=13, BW=52.4KiB/s (53.6kB/s)(5940KiB/113413msec) clat (usec): min=31, max=537752, avg=36273.01, stdev=33664.11 lat (usec): min=31, max=537769, avg=36276.13, stdev=33667.42 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 14877], | 30.00th=[ 19530], 40.00th=[ 24249], 50.00th=[ 29492], 60.00th=[ 35390], | 70.00th=[ 43779], 80.00th=[ 55837], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[132645], 99.50th=[210764], 99.90th=[425722], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 5, max= 111, per=25.31%, avg=52.13, stdev=23.29, samples=223 iops : min= 1, max= 27, avg=12.38, stdev= 5.84, samples=223 write: IOPS=13, BW=55.0KiB/s (57.3kB/s)(6348KiB/113413msec); 0 zone resets clat (usec): min=749, max=1005.5k, avg=37271.55, stdev=45610.66 lat (usec): min=750, max=1005.5k, avg=37275.40, stdev=45610.60 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1123], 10.00th=[ 1254], | 20.00th=[ 3130], 30.00th=[ 7046], 40.00th=[ 16909], | 50.00th=[ 26608], 60.00th=[ 36439], 70.00th=[ 47449], | 80.00th=[ 63701], 90.00th=[ 89654], 95.00th=[ 113771], | 99.00th=[ 164627], 99.50th=[ 206570], 99.90th=[ 270533], | 99.95th=[1002439], 99.99th=[1002439] bw ( KiB/s): min= 7, max= 167, per=26.06%, avg=56.29, stdev=26.33, samples=221 iops : min= 1, max= 41, avg=13.43, stdev= 6.62, samples=221 lat (usec) : 50=0.94%, 100=4.65%, 250=0.29%, 500=0.16%, 750=0.10% lat (usec) : 1000=0.49% lat (msec) : 2=7.36%, 4=3.94%, 10=6.84%, 20=12.47%, 50=36.52% lat (msec) : 100=20.54%, 250=5.50%, 500=0.13%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=5.28%, ctx=6125, majf=0, minf=20 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=144981: Sat Aug 22 01:39:42 2026 read: IOPS=12, BW=51.9KiB/s (53.2kB/s)(6028KiB/116035msec) clat (usec): min=25, max=1053.9k, avg=36029.13, stdev=38815.47 lat (usec): min=25, max=1053.9k, avg=36030.50, stdev=38815.27 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 58], 10.00th=[ 76], | 20.00th=[ 15139], 30.00th=[ 19792], 40.00th=[ 24511], | 50.00th=[ 29492], 60.00th=[ 35390], 70.00th=[ 42730], | 80.00th=[ 53216], 90.00th=[ 71828], 95.00th=[ 89654], | 99.00th=[ 129500], 99.50th=[ 152044], 99.90th=[ 287310], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 5, max= 127, per=25.28%, avg=52.08, stdev=23.70, samples=226 iops : min= 1, max= 31, avg=12.37, stdev= 5.95, samples=226 write: IOPS=13, BW=53.9KiB/s (55.2kB/s)(6260KiB/116035msec); 0 zone resets clat (usec): min=712, max=552534, avg=39191.49, stdev=44576.74 lat (usec): min=712, max=552535, avg=39193.08, stdev=44576.75 clat percentiles (usec): | 1.00th=[ 971], 5.00th=[ 1139], 10.00th=[ 1270], 20.00th=[ 3130], | 30.00th=[ 7898], 40.00th=[ 18482], 50.00th=[ 28181], 60.00th=[ 38011], | 70.00th=[ 50070], 80.00th=[ 64750], 90.00th=[ 92799], 95.00th=[117965], | 99.00th=[206570], 99.50th=[246416], 99.90th=[400557], 99.95th=[549454], | 99.99th=[549454] bw ( KiB/s): min= 7, max= 150, per=24.82%, avg=53.62, stdev=23.75, samples=228 iops : min= 1, max= 37, avg=12.75, stdev= 5.97, samples=228 lat (usec) : 50=0.98%, 100=4.30%, 250=0.23%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.55% lat (msec) : 2=7.26%, 4=3.74%, 10=6.38%, 20=12.53%, 50=37.60% lat (msec) : 100=20.28%, 250=5.63%, 500=0.23%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=5.31%, ctx=6257, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144982: Sat Aug 22 01:39:42 2026 read: IOPS=13, BW=52.1KiB/s (53.3kB/s)(6052KiB/116195msec) clat (usec): min=24, max=256371, avg=35040.45, stdev=28736.75 lat (usec): min=24, max=256372, avg=35041.53, stdev=28736.72 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 58], 10.00th=[ 84], 20.00th=[ 14615], | 30.00th=[ 19006], 40.00th=[ 23725], 50.00th=[ 29230], 60.00th=[ 34866], | 70.00th=[ 42206], 80.00th=[ 52691], 90.00th=[ 70779], 95.00th=[ 84411], | 99.00th=[127402], 99.50th=[162530], 99.90th=[248513], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 7, max= 126, per=25.46%, avg=52.45, stdev=24.46, samples=224 iops : min= 1, max= 31, avg=12.47, stdev= 6.16, samples=224 write: IOPS=13, BW=53.7KiB/s (54.0kB/s)(6236KiB/116195msec); 0 zone resets clat (usec): min=772, max=1322.6k, avg=40275.23, stdev=53248.40 lat (usec): min=773, max=1322.6k, avg=40277.96, stdev=53249.64 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1156], 10.00th=[ 1303], | 20.00th=[ 3458], 30.00th=[ 8356], 40.00th=[ 19006], | 50.00th=[ 28181], 60.00th=[ 38536], 70.00th=[ 50594], | 80.00th=[ 67634], 90.00th=[ 93848], 95.00th=[ 119014], | 99.00th=[ 204473], 99.50th=[ 235930], 99.90th=[ 295699], | 99.95th=[1317012], 99.99th=[1317012] bw ( KiB/s): min= 7, max= 126, per=24.73%, avg=53.42, stdev=24.91, samples=227 iops : min= 1, max= 31, avg=12.70, stdev= 6.27, samples=227 lat (usec) : 50=0.62%, 100=4.46%, 250=0.33%, 500=0.13%, 1000=0.36% lat (msec) : 2=7.13%, 4=3.84%, 10=5.83%, 20=13.74%, 50=37.27% lat (msec) : 100=20.38%, 250=5.73%, 500=0.16%, 2000=0.03% cpu : usr=0.06%, sys=5.31%, ctx=6344, majf=0, minf=20 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=207KiB/s (212kB/s), 51.6KiB/s-52.4KiB/s (52.9kB/s-53.6kB/s), io=23.4MiB (24.6MB), run=113413-116195msec WRITE: bw=216KiB/s (222kB/s), 53.7KiB/s-55.0KiB/s (54.0kB/s-57.3kB/s), io=24.6MiB (25.7MB), run=113413-116195msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144983: Sat Aug 22 01:41:52 2026 read: IOPS=6, BW=24.4KiB/s (24.0kB/s)(5992KiB/245716msec) clat (msec): min=5, max=1010, avg=30.72, stdev=42.02 lat (msec): min=5, max=1010, avg=30.72, stdev=42.02 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 40], 90.00th=[ 66], 95.00th=[ 92], | 99.00th=[ 161], 99.50th=[ 230], 99.90th=[ 535], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 109, per=27.60%, avg=26.77, stdev=18.07, samples=434 iops : min= 1, max= 27, avg= 6.08, stdev= 4.56, samples=434 write: IOPS=6, BW=25.6KiB/s (26.2kB/s)(6296KiB/245716msec); 0 zone resets clat (msec): min=31, max=635, avg=126.67, stdev=63.58 lat (msec): min=31, max=635, avg=126.67, stdev=63.58 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 77], | 30.00th=[ 88], 40.00th=[ 100], 50.00th=[ 112], 60.00th=[ 127], | 70.00th=[ 144], 80.00th=[ 169], 90.00th=[ 209], 95.00th=[ 251], | 99.00th=[ 338], 99.50th=[ 372], 99.90th=[ 510], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 63, per=24.98%, avg=25.47, stdev=11.59, samples=478 iops : min= 1, max= 15, avg= 5.75, stdev= 2.96, samples=478 lat (msec) : 10=6.48%, 20=18.78%, 50=17.90%, 100=24.74%, 250=29.26% lat (msec) : 500=2.70%, 750=0.10%, 2000=0.03% cpu : usr=0.04%, sys=1.14%, ctx=5063, 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=144984: Sat Aug 22 01:41:52 2026 read: IOPS=6, BW=24.4KiB/s (24.0kB/s)(5940KiB/243725msec) clat (msec): min=4, max=1028, avg=30.10, stdev=40.73 lat (msec): min=4, max=1028, avg=30.10, stdev=40.73 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 40], 90.00th=[ 66], 95.00th=[ 92], | 99.00th=[ 171], 99.50th=[ 209], 99.90th=[ 326], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 119, per=28.36%, avg=27.51, stdev=18.74, samples=419 iops : min= 1, max= 29, avg= 6.27, stdev= 4.72, samples=419 write: IOPS=6, BW=26.0KiB/s (26.7kB/s)(6348KiB/243725msec); 0 zone resets clat (msec): min=31, max=649, avg=125.21, stdev=63.05 lat (msec): min=31, max=649, avg=125.21, stdev=63.05 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 75], | 30.00th=[ 87], 40.00th=[ 99], 50.00th=[ 110], 60.00th=[ 125], | 70.00th=[ 142], 80.00th=[ 169], 90.00th=[ 213], 95.00th=[ 247], | 99.00th=[ 317], 99.50th=[ 368], 99.90th=[ 600], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 7, max= 64, per=25.20%, avg=25.70, stdev=11.89, samples=478 iops : min= 1, max= 16, avg= 5.81, stdev= 3.03, samples=478 lat (msec) : 10=7.03%, 20=18.52%, 50=17.55%, 100=25.23%, 250=29.10% lat (msec) : 500=2.47%, 750=0.07%, 2000=0.03% cpu : usr=0.05%, sys=1.11%, ctx=5052, 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=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=144985: Sat Aug 22 01:41:52 2026 read: IOPS=6, BW=24.5KiB/s (25.1kB/s)(6028KiB/245594msec) clat (msec): min=5, max=545, avg=31.65, stdev=37.57 lat (msec): min=5, max=545, avg=31.65, stdev=37.57 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 41], 90.00th=[ 71], 95.00th=[ 102], | 99.00th=[ 176], 99.50th=[ 205], 99.90th=[ 439], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 119, per=27.77%, avg=26.94, stdev=17.84, samples=433 iops : min= 1, max= 29, avg= 6.12, stdev= 4.47, samples=433 write: IOPS=6, BW=25.5KiB/s (26.1kB/s)(6260KiB/245594msec); 0 zone resets clat (msec): min=29, max=1270, avg=126.24, stdev=68.41 lat (msec): min=29, max=1270, avg=126.24, stdev=68.41 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 54], 10.00th=[ 64], 20.00th=[ 77], | 30.00th=[ 88], 40.00th=[ 99], 50.00th=[ 112], 60.00th=[ 128], | 70.00th=[ 144], 80.00th=[ 165], 90.00th=[ 209], 95.00th=[ 247], | 99.00th=[ 342], 99.50th=[ 380], 99.90th=[ 634], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 7, max= 64, per=24.77%, avg=25.27, stdev=12.17, samples=478 iops : min= 1, max= 16, avg= 5.70, stdev= 3.09, samples=478 lat (msec) : 10=6.15%, 20=19.37%, 50=17.61%, 100=24.12%, 250=30.21% lat (msec) : 500=2.44%, 750=0.07%, 2000=0.03% cpu : usr=0.05%, sys=1.14%, ctx=5103, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144986: Sat Aug 22 01:41:52 2026 read: IOPS=6, BW=24.7KiB/s (25.3kB/s)(6052KiB/245333msec) clat (msec): min=4, max=462, avg=32.17, stdev=36.66 lat (msec): min=4, max=462, avg=32.18, stdev=36.66 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 43], 90.00th=[ 71], 95.00th=[ 101], | 99.00th=[ 176], 99.50th=[ 257], 99.90th=[ 439], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 7, max= 103, per=27.93%, avg=27.09, stdev=18.28, samples=433 iops : min= 1, max= 25, avg= 6.16, stdev= 4.61, samples=433 write: IOPS=6, BW=25.4KiB/s (26.0kB/s)(6236KiB/245333msec); 0 zone resets clat (msec): min=31, max=1302, avg=125.94, stdev=70.24 lat (msec): min=31, max=1302, avg=125.94, stdev=70.24 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 77], | 30.00th=[ 87], 40.00th=[ 97], 50.00th=[ 111], 60.00th=[ 126], | 70.00th=[ 142], 80.00th=[ 165], 90.00th=[ 209], 95.00th=[ 253], | 99.00th=[ 342], 99.50th=[ 384], 99.90th=[ 651], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 63, per=24.88%, avg=25.38, stdev=11.83, samples=475 iops : min= 1, max= 15, avg= 5.73, stdev= 3.01, samples=475 lat (msec) : 10=5.76%, 20=18.98%, 50=17.94%, 100=25.36%, 250=29.10% lat (msec) : 500=2.73%, 750=0.10%, 2000=0.03% cpu : usr=0.03%, sys=1.07%, ctx=5002, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=97.7KiB/s (100kB/s), 24.4KiB/s-24.7KiB/s (24.0kB/s-25.3kB/s), io=23.4MiB (24.6MB), run=243725-245716msec WRITE: bw=102KiB/s (105kB/s), 25.4KiB/s-26.0KiB/s (26.0kB/s-26.7kB/s), io=24.6MiB (25.7MB), run=243725-245716msec 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=145033: Sat Aug 22 01:42:24 2026 read: IOPS=17, BW=274KiB/s (280kB/s)(5920KiB/21617msec) clat (usec): min=34, max=146216, avg=29514.77, stdev=27026.68 lat (usec): min=34, max=146217, avg=29517.13, stdev=27028.72 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 52], 10.00th=[ 61], 20.00th=[ 72], | 30.00th=[ 13698], 40.00th=[ 22414], 50.00th=[ 27132], 60.00th=[ 31589], | 70.00th=[ 38536], 80.00th=[ 49021], 90.00th=[ 66323], 95.00th=[ 82314], | 99.00th=[122160], 99.50th=[137364], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 95, max= 444, per=26.14%, avg=272.90, stdev=83.26, samples=42 iops : min= 5, max= 27, avg=16.33, stdev= 5.24, samples=42 write: IOPS=18, BW=295KiB/s (302kB/s)(6368KiB/21617msec); 0 zone resets clat (usec): min=1004, max=154679, avg=26448.01, stdev=28867.67 lat (usec): min=1007, max=154680, avg=26450.42, stdev=28867.35 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1582], 10.00th=[ 1762], 20.00th=[ 3589], | 30.00th=[ 5407], 40.00th=[ 8094], 50.00th=[ 14222], 60.00th=[ 22938], | 70.00th=[ 35390], 80.00th=[ 50594], 90.00th=[ 66847], 95.00th=[ 82314], | 99.00th=[129500], 99.50th=[149947], 99.90th=[154141], 99.95th=[154141], | 99.99th=[154141] bw ( KiB/s): min= 32, max= 504, per=26.85%, avg=295.07, stdev=112.72, samples=42 iops : min= 2, max= 31, avg=17.71, stdev= 7.00, samples=42 lat (usec) : 50=1.82%, 100=9.90%, 250=1.43%, 500=0.26% lat (msec) : 2=6.64%, 4=5.34%, 10=11.72%, 20=9.64%, 50=33.33% lat (msec) : 100=17.84%, 250=2.08% cpu : usr=0.09%, sys=6.84%, ctx=1318, 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=145034: Sat Aug 22 01:42:24 2026 read: IOPS=15, BW=251KiB/s (257kB/s)(5744KiB/22929msec) clat (usec): min=39, max=161356, avg=31331.82, stdev=26109.09 lat (usec): min=39, max=161357, avg=31338.30, stdev=26113.42 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 89], | 30.00th=[ 17171], 40.00th=[ 24249], 50.00th=[ 29230], 60.00th=[ 35390], | 70.00th=[ 41681], 80.00th=[ 52167], 90.00th=[ 64226], 95.00th=[ 78119], | 99.00th=[111674], 99.50th=[158335], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 62, max= 443, per=24.17%, avg=252.34, stdev=99.46, samples=44 iops : min= 3, max= 27, avg=15.05, stdev= 6.26, samples=44 write: IOPS=17, BW=285KiB/s (292kB/s)(6544KiB/22929msec); 0 zone resets clat (usec): min=1188, max=198167, avg=28311.23, stdev=29037.46 lat (usec): min=1190, max=198168, avg=28315.63, stdev=29036.29 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1729], 10.00th=[ 2114], 20.00th=[ 4228], | 30.00th=[ 6849], 40.00th=[ 10683], 50.00th=[ 19792], 60.00th=[ 26346], | 70.00th=[ 38011], 80.00th=[ 49546], 90.00th=[ 69731], 95.00th=[ 84411], | 99.00th=[116917], 99.50th=[129500], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 126, max= 505, per=25.83%, avg=283.86, stdev=94.64, samples=44 iops : min= 7, max= 31, avg=17.02, stdev= 6.01, samples=44 lat (usec) : 50=0.91%, 100=8.59%, 250=0.91%, 500=0.39%, 750=0.13% lat (msec) : 2=5.08%, 4=4.95%, 10=11.20%, 20=10.42%, 50=36.85% lat (msec) : 100=18.49%, 250=2.08% cpu : usr=0.13%, sys=6.92%, ctx=1377, 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=145035: Sat Aug 22 01:42:24 2026 read: IOPS=17, BW=275KiB/s (282kB/s)(6256KiB/22755msec) clat (usec): min=26, max=153668, avg=29729.13, stdev=25990.60 lat (usec): min=26, max=153669, avg=29730.42, stdev=25990.60 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 60], 20.00th=[ 78], | 30.00th=[ 16581], 40.00th=[ 21890], 50.00th=[ 26084], 60.00th=[ 31589], | 70.00th=[ 38536], 80.00th=[ 48497], 90.00th=[ 60556], 95.00th=[ 73925], | 99.00th=[110625], 99.50th=[147850], 99.90th=[154141], 99.95th=[154141], | 99.99th=[154141] bw ( KiB/s): min= 43, max= 474, per=26.79%, avg=279.66, stdev=83.36, samples=44 iops : min= 2, max= 29, avg=16.73, stdev= 5.26, samples=44 write: IOPS=16, BW=265KiB/s (271kB/s)(6032KiB/22755msec); 0 zone resets clat (usec): min=1110, max=200522, avg=28859.37, stdev=30891.53 lat (usec): min=1113, max=200523, avg=28864.06, stdev=30889.75 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1663], 10.00th=[ 1975], 20.00th=[ 3785], | 30.00th=[ 6063], 40.00th=[ 9896], 50.00th=[ 18220], 60.00th=[ 28181], | 70.00th=[ 38011], 80.00th=[ 51643], 90.00th=[ 67634], 95.00th=[ 93848], | 99.00th=[122160], 99.50th=[198181], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 86, max= 568, per=24.16%, avg=265.52, stdev=104.44, samples=44 iops : min= 5, max= 35, avg=15.86, stdev= 6.50, samples=44 lat (usec) : 50=1.56%, 100=9.51%, 250=0.52%, 500=0.26% lat (msec) : 2=5.47%, 4=5.60%, 10=9.24%, 20=11.85%, 50=36.07% lat (msec) : 100=17.45%, 250=2.47% cpu : usr=0.11%, sys=6.60%, ctx=1387, 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=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=145036: Sat Aug 22 01:42:24 2026 read: IOPS=17, BW=282KiB/s (288kB/s)(6032KiB/21415msec) clat (usec): min=37, max=202005, avg=28750.21, stdev=28404.08 lat (usec): min=38, max=202006, avg=28754.64, stdev=28400.83 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 53], 10.00th=[ 58], 20.00th=[ 68], | 30.00th=[ 10814], 40.00th=[ 20055], 50.00th=[ 25035], 60.00th=[ 31589], | 70.00th=[ 37487], 80.00th=[ 48497], 90.00th=[ 61604], 95.00th=[ 76022], | 99.00th=[128451], 99.50th=[166724], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 63, max= 509, per=27.00%, avg=281.85, stdev=115.93, samples=41 iops : min= 3, max= 31, avg=16.90, stdev= 7.25, samples=41 write: IOPS=18, BW=292KiB/s (299kB/s)(6256KiB/21415msec); 0 zone resets clat (usec): min=1265, max=272854, avg=26294.85, stdev=30903.38 lat (usec): min=1267, max=272856, avg=26301.37, stdev=30913.46 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1598], 10.00th=[ 2212], 20.00th=[ 3884], | 30.00th=[ 5932], 40.00th=[ 9372], 50.00th=[ 14353], 60.00th=[ 22414], | 70.00th=[ 33817], 80.00th=[ 44303], 90.00th=[ 62653], 95.00th=[ 83362], | 99.00th=[129500], 99.50th=[185598], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 109, max= 633, per=26.69%, avg=293.27, stdev=102.56, samples=41 iops : min= 6, max= 39, avg=17.59, stdev= 6.45, samples=41 lat (usec) : 50=1.95%, 100=11.46%, 250=0.52%, 500=0.52% lat (msec) : 2=4.95%, 4=5.86%, 10=10.68%, 20=13.54%, 50=33.33% lat (msec) : 100=14.58%, 250=2.47%, 500=0.13% cpu : usr=0.10%, sys=6.87%, ctx=1298, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=1045KiB/s (1070kB/s), 251KiB/s-282KiB/s (257kB/s-288kB/s), io=23.4MiB (24.5MB), run=21415-22929msec WRITE: bw=1099KiB/s (1125kB/s), 265KiB/s-295KiB/s (271kB/s-302kB/s), io=24.6MiB (25.8MB), run=21415-22929msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145037: Sat Aug 22 01:42:59 2026 read: IOPS=6, BW=104KiB/s (106kB/s)(5920KiB/56974msec) clat (msec): min=6, max=223, avg=30.74, stdev=30.89 lat (msec): min=6, max=223, avg=30.74, stdev=30.89 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 39], 90.00th=[ 62], 95.00th=[ 108], | 99.00th=[ 146], 99.50th=[ 176], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 416, per=27.09%, avg=111.59, stdev=67.54, samples=103 iops : min= 1, max= 26, avg= 6.27, stdev= 4.34, samples=103 write: IOPS=6, BW=112KiB/s (114kB/s)(6368KiB/56974msec); 0 zone resets clat (msec): min=41, max=391, avg=113.95, stdev=51.44 lat (msec): min=41, max=391, avg=113.96, stdev=51.45 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 63], 20.00th=[ 70], | 30.00th=[ 82], 40.00th=[ 92], 50.00th=[ 106], 60.00th=[ 115], | 70.00th=[ 130], 80.00th=[ 148], 90.00th=[ 182], 95.00th=[ 207], | 99.00th=[ 317], 99.50th=[ 372], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 31, max= 224, per=26.00%, avg=112.85, stdev=47.56, samples=110 iops : min= 1, max= 14, avg= 6.34, stdev= 3.10, samples=110 lat (msec) : 10=5.08%, 20=19.27%, 50=17.97%, 100=26.95%, 250=29.56% lat (msec) : 500=1.17% cpu : usr=0.03%, sys=1.35%, ctx=1288, 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=145038: Sat Aug 22 01:42:59 2026 read: IOPS=6, BW=99.0KiB/s (101kB/s)(5744KiB/58018msec) clat (msec): min=6, max=243, avg=32.36, stdev=34.84 lat (msec): min=6, max=243, avg=32.36, stdev=34.84 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=[ 24], | 70.00th=[ 30], 80.00th=[ 44], 90.00th=[ 73], 95.00th=[ 100], | 99.00th=[ 186], 99.50th=[ 236], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 28, max= 413, per=27.40%, avg=112.88, stdev=69.58, samples=99 iops : min= 1, max= 25, avg= 6.35, stdev= 4.46, samples=99 write: IOPS=7, BW=113KiB/s (115kB/s)(6544KiB/58018msec); 0 zone resets clat (msec): min=29, max=317, avg=112.37, stdev=52.36 lat (msec): min=29, max=317, avg=112.37, stdev=52.36 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 50], 10.00th=[ 59], 20.00th=[ 70], | 30.00th=[ 82], 40.00th=[ 93], 50.00th=[ 104], 60.00th=[ 114], | 70.00th=[ 129], 80.00th=[ 146], 90.00th=[ 178], 95.00th=[ 220], | 99.00th=[ 296], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 31, max= 287, per=25.96%, avg=112.66, stdev=52.84, samples=113 iops : min= 1, max= 17, avg= 6.32, stdev= 3.41, samples=113 lat (msec) : 10=4.04%, 20=19.53%, 50=18.62%, 100=26.95%, 250=29.04% lat (msec) : 500=1.82% cpu : usr=0.03%, sys=1.33%, ctx=1333, 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=145039: Sat Aug 22 01:42:59 2026 read: IOPS=7, BW=114KiB/s (117kB/s)(6256KiB/54904msec) clat (msec): min=6, max=188, avg=30.12, stdev=30.47 lat (msec): min=6, max=188, avg=30.12, stdev=30.47 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 28], 80.00th=[ 37], 90.00th=[ 57], 95.00th=[ 87], | 99.00th=[ 174], 99.50th=[ 186], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 31, max= 411, per=29.51%, avg=121.57, stdev=83.01, samples=102 iops : min= 1, max= 25, avg= 6.88, stdev= 5.26, samples=102 write: IOPS=6, BW=110KiB/s (113kB/s)(6032KiB/54904msec); 0 zone resets clat (msec): min=38, max=345, avg=114.13, stdev=53.03 lat (msec): min=38, max=345, avg=114.14, stdev=53.03 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 72], | 30.00th=[ 82], 40.00th=[ 90], 50.00th=[ 102], 60.00th=[ 116], | 70.00th=[ 131], 80.00th=[ 150], 90.00th=[ 186], 95.00th=[ 224], | 99.00th=[ 305], 99.50th=[ 326], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 31, max= 223, per=25.19%, avg=109.33, stdev=46.31, samples=108 iops : min= 1, max= 13, avg= 6.11, stdev= 3.05, samples=108 lat (msec) : 10=3.52%, 20=21.48%, 50=21.61%, 100=26.17%, 250=25.91% lat (msec) : 500=1.30% cpu : usr=0.05%, sys=1.40%, ctx=1362, 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=145040: Sat Aug 22 01:42:59 2026 read: IOPS=6, BW=107KiB/s (110kB/s)(6032KiB/56297msec) clat (msec): min=6, max=175, avg=28.60, stdev=25.06 lat (msec): min=6, max=175, avg=28.61, stdev=25.06 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 37], 90.00th=[ 59], 95.00th=[ 78], | 99.00th=[ 131], 99.50th=[ 150], 99.90th=[ 176], 99.95th=[ 176], | 99.99th=[ 176] bw ( KiB/s): min= 31, max= 383, per=27.70%, avg=114.11, stdev=71.02, samples=103 iops : min= 1, max= 23, avg= 6.43, stdev= 4.51, samples=103 write: IOPS=6, BW=111KiB/s (114kB/s)(6256KiB/56297msec); 0 zone resets clat (msec): min=43, max=371, avg=115.41, stdev=52.01 lat (msec): min=43, max=371, avg=115.41, stdev=52.01 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 57], 10.00th=[ 66], 20.00th=[ 77], | 30.00th=[ 85], 40.00th=[ 92], 50.00th=[ 100], 60.00th=[ 113], | 70.00th=[ 129], 80.00th=[ 150], 90.00th=[ 186], 95.00th=[ 215], | 99.00th=[ 305], 99.50th=[ 317], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 29, max= 224, per=25.51%, avg=110.70, stdev=44.99, samples=111 iops : min= 1, max= 14, avg= 6.20, stdev= 2.99, samples=111 lat (msec) : 10=2.99%, 20=22.53%, 50=17.84%, 100=29.95%, 250=25.39% lat (msec) : 500=1.30% cpu : usr=0.03%, sys=1.31%, ctx=1297, 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=413KiB/s (423kB/s), 99.0KiB/s-114KiB/s (101kB/s-117kB/s), io=23.4MiB (24.5MB), run=54904-58018msec WRITE: bw=434KiB/s (445kB/s), 110KiB/s-113KiB/s (113kB/s-115kB/s), io=24.6MiB (25.8MB), run=54904-58018msec 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=145054: Sat Aug 22 01:43:13 2026 read: IOPS=2, BW=2615KiB/s (2678kB/s)(7168KiB/2741msec) clat (msec): min=3, max=312, avg=196.30, stdev=108.08 lat (msec): min=3, max=312, avg=196.30, stdev=108.08 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 134], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 194], 60.00th=[ 266], | 70.00th=[ 266], 80.00th=[ 296], 90.00th=[ 313], 95.00th=[ 313], | 99.00th=[ 313], 99.50th=[ 313], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 2023, max= 4213, per=51.99%, avg=2759.67, stdev=1258.66, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1868KiB/s (1913kB/s)(5120KiB/2741msec); 0 zone resets clat (msec): min=176, max=444, avg=265.10, stdev=104.44 lat (msec): min=176, max=444, avg=265.17, stdev=104.43 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 232], 60.00th=[ 232], | 70.00th=[ 255], 80.00th=[ 255], 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= 2043, max= 5873, per=53.26%, avg=3958.00, stdev=2708.22, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 4=8.33%, 250=50.00%, 500=41.67% cpu : usr=0.00%, sys=15.91%, ctx=233, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145055: Sat Aug 22 01:43:13 2026 read: IOPS=0, BW=531KiB/s (544kB/s)(2048KiB/3858msec) clat (usec): min=1526, max=679887, avg=340706.82, stdev=479673.32 lat (usec): min=1528, max=679889, avg=340708.82, stdev=479673.87 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1532], 10.00th=[ 1532], 20.00th=[ 1532], | 30.00th=[ 1532], 40.00th=[ 1532], 50.00th=[ 1532], 60.00th=[683672], | 70.00th=[683672], 80.00th=[683672], 90.00th=[683672], 95.00th=[683672], | 99.00th=[683672], 99.50th=[683672], 99.90th=[683672], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 2043, max= 2048, per=38.54%, avg=2045.50, stdev= 3.54, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2654KiB/s (2718kB/s)(10.0MiB/3858msec); 0 zone resets clat (msec): min=68, max=996, avg=305.15, stdev=296.66 lat (msec): min=68, max=996, avg=305.39, stdev=296.69 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 107], | 30.00th=[ 136], 40.00th=[ 148], 50.00th=[ 165], 60.00th=[ 180], | 70.00th=[ 264], 80.00th=[ 330], 90.00th=[ 659], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 2023, max= 6083, per=48.88%, avg=3632.00, stdev=1689.42, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 1.79, samples=5 lat (msec) : 2=8.33%, 100=8.33%, 250=41.67%, 500=16.67%, 750=16.67% lat (msec) : 1000=8.33% cpu : usr=0.05%, sys=12.19%, ctx=93, 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=145056: Sat Aug 22 01:43:13 2026 read: IOPS=2, BW=2341KiB/s (2397kB/s)(6144KiB/2625msec) clat (usec): min=464, max=268496, avg=120250.34, stdev=131373.38 lat (usec): min=465, max=268497, avg=120251.45, stdev=131373.17 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], 20.00th=[ 873], | 30.00th=[ 873], 40.00th=[ 2409], 50.00th=[ 2409], 60.00th=[221250], | 70.00th=[229639], 80.00th=[229639], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 3915, max= 4047, per=75.00%, avg=3981.00, stdev=93.34, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2341KiB/s (2397kB/s)(6144KiB/2625msec); 0 zone resets clat (msec): min=143, max=816, avg=301.72, stdev=256.84 lat (msec): min=143, max=817, avg=301.88, stdev=256.82 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 253], | 70.00th=[ 257], 80.00th=[ 257], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1957, max= 2917, per=30.94%, avg=2299.00, stdev=536.22, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (usec) : 500=8.33%, 1000=8.33% lat (msec) : 4=8.33%, 250=41.67%, 500=25.00%, 1000=8.33% cpu : usr=0.04%, sys=12.50%, ctx=66, 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=145057: Sat Aug 22 01:43:13 2026 read: IOPS=1, BW=1806KiB/s (1849kB/s)(5120KiB/2835msec) clat (usec): min=604, max=279086, avg=99987.94, stdev=136905.30 lat (usec): min=605, max=279088, avg=99989.13, stdev=136905.47 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 603], 10.00th=[ 603], 20.00th=[ 603], | 30.00th=[ 652], 40.00th=[ 652], 50.00th=[ 2671], 60.00th=[ 2671], | 70.00th=[217056], 80.00th=[217056], 90.00th=[278922], 95.00th=[278922], | 99.00th=[278922], 99.50th=[278922], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7831, max= 7831, per=100.00%, avg=7831.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2528KiB/s (2589kB/s)(7168KiB/2835msec); 0 zone resets clat (msec): min=151, max=869, avg=326.09, stdev=250.70 lat (msec): min=151, max=869, avg=326.17, stdev=250.71 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 197], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 209], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 380], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 1492, max= 4096, per=39.29%, avg=2919.50, stdev=1349.25, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (usec) : 750=16.67% lat (msec) : 4=8.33%, 250=41.67%, 500=25.00%, 1000=8.33% cpu : usr=0.00%, sys=12.88%, ctx=124, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5308KiB/s (5436kB/s), 531KiB/s-2615KiB/s (544kB/s-2678kB/s), io=20.0MiB (20.0MB), run=2625-3858msec WRITE: bw=7432KiB/s (7610kB/s), 1868KiB/s-2654KiB/s (1913kB/s-2718kB/s), io=28.0MiB (29.4MB), run=2625-3858msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145059: Sat Aug 22 01:43:14 2026 read: IOPS=1, BW=1931KiB/s (1977kB/s)(7168KiB/3712msec) clat (msec): min=68, max=673, avg=351.35, stdev=275.02 lat (msec): min=68, max=673, avg=351.35, stdev=275.02 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 72], | 30.00th=[ 134], 40.00th=[ 134], 50.00th=[ 284], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 642], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1469, max= 4079, per=45.22%, avg=2389.75, stdev=1154.47, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1379KiB/s (1412kB/s)(5120KiB/3712msec); 0 zone resets clat (msec): min=162, max=360, avg=232.90, stdev=84.62 lat (msec): min=162, max=360, avg=233.01, stdev=84.64 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 197], 60.00th=[ 197], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 2035, max= 4071, per=41.26%, avg=3053.00, stdev=1439.67, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=25.00% cpu : usr=0.00%, sys=3.29%, ctx=59, 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=145060: Sat Aug 22 01:43:14 2026 read: IOPS=0, BW=529KiB/s (541kB/s)(2048KiB/3875msec) clat (msec): min=165, max=189, avg=177.64, stdev=17.08 lat (msec): min=165, max=189, avg=177.64, stdev=17.08 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 190], | 70.00th=[ 190], 80.00th=[ 190], 90.00th=[ 190], 95.00th=[ 190], | 99.00th=[ 190], 99.50th=[ 190], 99.90th=[ 190], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 1939, max= 2043, per=37.67%, avg=1991.00, stdev=73.54, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2643KiB/s (2706kB/s)(10.0MiB/3875msec); 0 zone resets clat (msec): min=95, max=669, avg=336.22, stdev=182.40 lat (msec): min=95, max=669, avg=336.32, stdev=182.40 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 129], | 30.00th=[ 174], 40.00th=[ 228], 50.00th=[ 321], 60.00th=[ 372], | 70.00th=[ 435], 80.00th=[ 460], 90.00th=[ 489], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1976, max= 4047, per=31.84%, avg=2355.83, stdev=828.81, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=4.41%, ctx=61, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145061: Sat Aug 22 01:43:14 2026 read: IOPS=1, BW=1946KiB/s (1992kB/s)(6144KiB/3158msec) clat (msec): min=76, max=189, avg=135.59, stdev=47.06 lat (msec): min=76, max=189, avg=135.59, stdev=47.06 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 84], | 30.00th=[ 84], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 144], | 70.00th=[ 180], 80.00th=[ 180], 90.00th=[ 190], 95.00th=[ 190], | 99.00th=[ 190], 99.50th=[ 190], 99.90th=[ 190], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 1976, max= 4063, per=47.76%, avg=2524.25, stdev=1026.20, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1946KiB/s (1992kB/s)(6144KiB/3158msec); 0 zone resets clat (msec): min=202, max=559, avg=368.00, stdev=156.93 lat (msec): min=202, max=560, avg=368.12, stdev=156.91 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 234], | 30.00th=[ 234], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 351], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 2015, max= 2043, per=27.45%, avg=2031.00, stdev=12.33, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=50.00%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=3.90%, ctx=69, 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=145062: Sat Aug 22 01:43:14 2026 read: IOPS=1, BW=1451KiB/s (1486kB/s)(5120KiB/3528msec) clat (msec): min=86, max=201, avg=137.55, stdev=41.76 lat (msec): min=86, max=201, avg=137.55, stdev=41.76 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 87], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 136], 60.00th=[ 136], | 70.00th=[ 144], 80.00th=[ 144], 90.00th=[ 201], 95.00th=[ 201], | 99.00th=[ 201], 99.50th=[ 201], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 2035, max= 6119, per=77.14%, avg=4077.00, stdev=2887.82, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=2032KiB/s (2081kB/s)(7168KiB/3528msec); 0 zone resets clat (msec): min=136, max=891, avg=380.68, stdev=258.14 lat (msec): min=136, max=891, avg=380.77, stdev=258.15 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 186], | 30.00th=[ 264], 40.00th=[ 264], 50.00th=[ 264], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 481], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 1565, max= 4071, per=39.47%, avg=2920.75, stdev=1338.75, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=33.33%, 1000=8.33% cpu : usr=0.03%, sys=4.34%, ctx=69, 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=5285KiB/s (5412kB/s), 529KiB/s-1946KiB/s (541kB/s-1992kB/s), io=20.0MiB (20.0MB), run=3158-3875msec WRITE: bw=7399KiB/s (7577kB/s), 1379KiB/s-2643KiB/s (1412kB/s-2706kB/s), io=28.0MiB (29.4MB), run=3158-3875msec 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=145071: Sat Aug 22 01:43:27 2026 read: IOPS=1, BW=4697KiB/s (4810kB/s)(12.0MiB/2616msec) clat (msec): min=806, max=919, avg=849.12, stdev=61.55 lat (msec): min=806, max=919, avg=849.12, stdev=61.55 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 818], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7968, max= 8126, per=100.00%, avg=8047.00, stdev=111.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=8.26%, ctx=137, 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=145072: Sat Aug 22 01:43:27 2026 read: IOPS=0, BW=1247KiB/s (1276kB/s)(4096KiB/3286msec) clat (nsec): min=878636k, max=878636k, avg=878635683.00, stdev= 0.00 lat (nsec): min=878638k, max=878638k, avg=878638467.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7968, max= 7968, per=100.00%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2493KiB/s (2553kB/s)(8192KiB/3286msec); 0 zone resets clat (msec): min=1142, max=1182, avg=1162.67, stdev=27.98 lat (msec): min=1143, max=1185, avg=1164.26, stdev=29.94 clat percentiles (msec): | 1.00th=[ 1150], 5.00th=[ 1150], 10.00th=[ 1150], 20.00th=[ 1150], | 30.00th=[ 1150], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1183], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8126, max= 8126, per=81.49%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=6.18%, ctx=100, 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=145073: Sat Aug 22 01:43:27 2026 write: IOPS=1, BW=7119KiB/s (7290kB/s)(12.0MiB/1726msec); 0 zone resets clat (msec): min=304, max=961, avg=547.32, stdev=360.62 lat (msec): min=304, max=965, avg=548.69, stdev=362.35 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 6954, max= 8192, per=75.94%, avg=7573.00, stdev=875.40, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.06%, sys=6.43%, ctx=51, 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=145074: Sat Aug 22 01:43:27 2026 write: IOPS=1, BW=4554KiB/s (4664kB/s)(12.0MiB/2698msec); 0 zone resets clat (msec): min=270, max=1352, avg=878.65, stdev=553.40 lat (msec): min=270, max=1353, avg=879.40, stdev=553.49 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 8126, max= 8143, per=81.57%, avg=8134.50, stdev=12.02, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.26%, ctx=36, 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=4986KiB/s (5106kB/s), 1247KiB/s-4697KiB/s (1276kB/s-4810kB/s), io=16.0MiB (16.8MB), run=2616-3286msec WRITE: bw=9972KiB/s (10.2MB/s), 2493KiB/s-7119KiB/s (2553kB/s-7290kB/s), io=32.0MiB (33.6MB), run=1726-3286msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145075: Sat Aug 22 01:43:28 2026 read: IOPS=0, BW=3861KiB/s (3953kB/s)(12.0MiB/3183msec) clat (msec): min=318, max=1538, avg=1028.23, stdev=634.16 lat (msec): min=318, max=1538, avg=1028.23, stdev=634.16 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 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= 7656, max= 7656, per=100.00%, avg=7656.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.03%, sys=3.33%, ctx=39, 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=145076: Sat Aug 22 01:43:28 2026 read: IOPS=0, BW=1218KiB/s (1247kB/s)(4096KiB/3363msec) clat (nsec): min=1394.6M, max=1394.6M, avg=1394563103.00, stdev= 0.00 lat (nsec): min=1394.6M, max=1394.6M, avg=1394566508.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1401], 5.00th=[ 1401], 10.00th=[ 1401], 20.00th=[ 1401], | 30.00th=[ 1401], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 1401], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7656, max= 7656, per=100.00%, avg=7656.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2436KiB/s (2494kB/s)(8192KiB/3363msec); 0 zone resets clat (msec): min=430, max=1449, avg=939.81, stdev=720.28 lat (msec): min=431, max=1450, avg=940.90, stdev=721.05 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 1452], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 8078, max= 8078, per=88.03%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.69%, ctx=90, 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=145077: Sat Aug 22 01:43:28 2026 write: IOPS=0, BW=3441KiB/s (3524kB/s)(12.0MiB/3571msec); 0 zone resets clat (msec): min=466, max=1861, avg=1171.50, stdev=697.80 lat (msec): min=467, max=1862, avg=1171.96, stdev=697.62 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7742, max= 8175, per=86.73%, avg=7958.50, stdev=306.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.10%, ctx=54, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145078: Sat Aug 22 01:43:28 2026 write: IOPS=1, BW=6035KiB/s (6180kB/s)(12.0MiB/2036msec); 0 zone resets clat (msec): min=272, max=1290, avg=656.69, stdev=553.23 lat (msec): min=272, max=1291, avg=657.25, stdev=553.07 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 409], | 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= 5979, max= 7876, per=75.50%, avg=6927.50, stdev=1341.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.29%, ctx=51, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4872KiB/s (4989kB/s), 1218KiB/s-3861KiB/s (1247kB/s-3953kB/s), io=16.0MiB (16.8MB), run=3183-3363msec WRITE: bw=9176KiB/s (9396kB/s), 2436KiB/s-6035KiB/s (2494kB/s-6180kB/s), io=32.0MiB (33.6MB), run=2036-3571msec