== sanity test 398b: DIO and buffer IO race ============== 07:30:52 (1787830252) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.10283 s, 8.2 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=144690: Thu Aug 27 07:33:02 2026 read: IOPS=13, BW=53.5KiB/s (54.8kB/s)(5992KiB/112052msec) clat (usec): min=35, max=1179.0k, avg=37120.43, stdev=40292.28 lat (usec): min=35, max=1179.0k, avg=37133.06, stdev=40306.83 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 137], | 20.00th=[ 17171], 30.00th=[ 21627], 40.00th=[ 26084], | 50.00th=[ 30802], 60.00th=[ 37487], 70.00th=[ 45351], | 80.00th=[ 54789], 90.00th=[ 68682], 95.00th=[ 85459], | 99.00th=[ 127402], 99.50th=[ 152044], 99.90th=[ 308282], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 5, max= 127, per=25.07%, avg=53.39, stdev=21.52, samples=218 iops : min= 1, max= 31, avg=12.69, stdev= 5.39, samples=218 write: IOPS=14, BW=56.2KiB/s (57.5kB/s)(6296KiB/112052msec); 0 zone resets clat (usec): min=980, max=309889, avg=35541.53, stdev=38006.32 lat (usec): min=982, max=309892, avg=35545.46, stdev=38007.32 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1418], 20.00th=[ 3916], | 30.00th=[ 7701], 40.00th=[ 16450], 50.00th=[ 26084], 60.00th=[ 35914], | 70.00th=[ 45876], 80.00th=[ 59507], 90.00th=[ 83362], 95.00th=[107480], | 99.00th=[166724], 99.50th=[204473], 99.90th=[291505], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 140, per=25.16%, avg=56.11, stdev=24.09, samples=218 iops : min= 1, max= 35, avg=13.39, stdev= 6.10, samples=218 lat (usec) : 50=0.68%, 100=4.00%, 250=0.33%, 500=0.07%, 750=0.10% lat (usec) : 1000=0.10% lat (msec) : 2=6.87%, 4=3.68%, 10=7.32%, 20=12.27%, 50=38.87% lat (msec) : 100=21.55%, 250=3.94%, 500=0.20%, 2000=0.03% cpu : usr=0.10%, sys=5.71%, ctx=6384, 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=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=144691: Thu Aug 27 07:33:02 2026 read: IOPS=13, BW=52.9KiB/s (54.1kB/s)(5940KiB/112368msec) clat (usec): min=33, max=315944, avg=36385.20, stdev=28333.87 lat (usec): min=33, max=315945, avg=36390.72, stdev=28338.29 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 2245], 20.00th=[ 16581], | 30.00th=[ 20841], 40.00th=[ 24511], 50.00th=[ 30016], 60.00th=[ 36963], | 70.00th=[ 43779], 80.00th=[ 54264], 90.00th=[ 70779], 95.00th=[ 87557], | 99.00th=[133694], 99.50th=[158335], 99.90th=[204473], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 5, max= 143, per=24.73%, avg=52.68, stdev=22.66, samples=219 iops : min= 1, max= 35, avg=12.54, stdev= 5.70, samples=219 write: IOPS=14, BW=56.5KiB/s (57.8kB/s)(6348KiB/112368msec); 0 zone resets clat (usec): min=952, max=1139.9k, avg=36488.24, stdev=46841.61 lat (usec): min=954, max=1139.9k, avg=36490.28, stdev=46841.32 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1647], | 20.00th=[ 4113], 30.00th=[ 7242], 40.00th=[ 16909], | 50.00th=[ 25822], 60.00th=[ 35390], 70.00th=[ 47449], | 80.00th=[ 61604], 90.00th=[ 84411], 95.00th=[ 105382], | 99.00th=[ 162530], 99.50th=[ 214959], 99.90th=[ 337642], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 143, per=25.22%, avg=56.25, stdev=22.34, samples=219 iops : min= 1, max= 35, avg=13.42, stdev= 5.63, samples=219 lat (usec) : 50=0.55%, 100=3.22%, 250=0.49%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=6.54%, 4=3.87%, 10=8.11%, 20=12.53%, 50=38.28% lat (msec) : 100=21.68%, 250=4.33%, 500=0.10%, 2000=0.03% cpu : usr=0.09%, sys=5.59%, ctx=6462, 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=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=144693: Thu Aug 27 07:33:02 2026 read: IOPS=13, BW=54.6KiB/s (55.9kB/s)(6028KiB/110469msec) clat (usec): min=33, max=247932, avg=35622.73, stdev=26481.88 lat (usec): min=34, max=247933, avg=35624.10, stdev=26481.92 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 59], 10.00th=[ 243], 20.00th=[ 16909], | 30.00th=[ 21365], 40.00th=[ 25822], 50.00th=[ 30802], 60.00th=[ 36439], | 70.00th=[ 42206], 80.00th=[ 52691], 90.00th=[ 68682], 95.00th=[ 84411], | 99.00th=[119014], 99.50th=[132645], 99.90th=[233833], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 7, max= 127, per=25.65%, avg=54.64, stdev=21.64, samples=215 iops : min= 1, max= 31, avg=13.01, stdev= 5.45, samples=215 write: IOPS=14, BW=56.7KiB/s (58.0kB/s)(6260KiB/110469msec); 0 zone resets clat (usec): min=933, max=1151.1k, avg=35984.90, stdev=46464.34 lat (usec): min=934, max=1151.1k, avg=35988.32, stdev=46464.16 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1172], 10.00th=[ 1483], | 20.00th=[ 3785], 30.00th=[ 7177], 40.00th=[ 15008], | 50.00th=[ 24773], 60.00th=[ 34341], 70.00th=[ 46924], | 80.00th=[ 61080], 90.00th=[ 85459], 95.00th=[ 105382], | 99.00th=[ 164627], 99.50th=[ 189793], 99.90th=[ 270533], | 99.95th=[1149240], 99.99th=[1149240] bw ( KiB/s): min= 10, max= 111, per=25.28%, avg=56.37, stdev=24.28, samples=216 iops : min= 2, max= 27, avg=13.45, stdev= 6.10, samples=216 lat (usec) : 50=0.72%, 100=3.78%, 250=0.42%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=6.74%, 4=3.78%, 10=7.65%, 20=12.86%, 50=38.48% lat (msec) : 100=20.80%, 250=4.59%, 500=0.03%, 2000=0.03% cpu : usr=0.08%, sys=5.64%, ctx=6380, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144695: Thu Aug 27 07:33:02 2026 read: IOPS=13, BW=53.9KiB/s (55.2kB/s)(6052KiB/112233msec) clat (usec): min=36, max=247957, avg=35589.30, stdev=26512.77 lat (usec): min=36, max=247958, avg=35594.37, stdev=26513.49 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 59], 10.00th=[ 1450], 20.00th=[ 16909], | 30.00th=[ 21365], 40.00th=[ 25560], 50.00th=[ 30278], 60.00th=[ 36439], | 70.00th=[ 43254], 80.00th=[ 52691], 90.00th=[ 66847], 95.00th=[ 82314], | 99.00th=[121111], 99.50th=[149947], 99.90th=[221250], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 7, max= 119, per=25.44%, avg=54.20, stdev=23.18, samples=218 iops : min= 1, max= 29, avg=12.90, stdev= 5.84, samples=218 write: IOPS=13, BW=55.6KiB/s (56.9kB/s)(6236KiB/112233msec); 0 zone resets clat (usec): min=994, max=1006.9k, avg=37144.96, stdev=45649.01 lat (usec): min=995, max=1006.9k, avg=37150.53, stdev=45648.08 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1582], | 20.00th=[ 3654], 30.00th=[ 7439], 40.00th=[ 16581], | 50.00th=[ 27395], 60.00th=[ 38011], 70.00th=[ 49546], | 80.00th=[ 61604], 90.00th=[ 83362], 95.00th=[ 105382], | 99.00th=[ 179307], 99.50th=[ 202376], 99.90th=[ 413139], | 99.95th=[1010828], 99.99th=[1010828] bw ( KiB/s): min= 7, max= 127, per=24.73%, avg=55.14, stdev=22.75, samples=220 iops : min= 1, max= 31, avg=13.15, stdev= 5.70, samples=220 lat (usec) : 50=0.65%, 100=3.55%, 250=0.36%, 500=0.10%, 750=0.13% lat (usec) : 1000=0.10% lat (msec) : 2=6.67%, 4=4.23%, 10=7.06%, 20=12.14%, 50=39.03% lat (msec) : 100=21.78%, 250=4.10%, 500=0.07%, 2000=0.03% cpu : usr=0.08%, sys=5.49%, ctx=6367, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=214KiB/s (219kB/s), 52.9KiB/s-54.6KiB/s (54.1kB/s-55.9kB/s), io=23.4MiB (24.6MB), run=110469-112368msec WRITE: bw=224KiB/s (229kB/s), 55.6KiB/s-56.7KiB/s (56.9kB/s-58.0kB/s), io=24.6MiB (25.7MB), run=110469-112368msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144692: Thu Aug 27 07:35:23 2026 read: IOPS=5, BW=23.7KiB/s (24.3kB/s)(5992KiB/252906msec) clat (msec): min=4, max=1175, avg=32.58, stdev=43.06 lat (msec): min=4, max=1175, avg=32.58, stdev=43.06 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 43], 90.00th=[ 66], 95.00th=[ 92], | 99.00th=[ 161], 99.50th=[ 194], 99.90th=[ 326], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 110, per=27.42%, avg=25.77, stdev=17.61, samples=450 iops : min= 1, max= 27, avg= 5.82, stdev= 4.43, samples=450 write: IOPS=6, BW=24.9KiB/s (25.5kB/s)(6296KiB/252906msec); 0 zone resets clat (msec): min=37, max=571, avg=129.39, stdev=56.62 lat (msec): min=37, max=571, avg=129.39, stdev=56.62 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 85], | 30.00th=[ 95], 40.00th=[ 106], 50.00th=[ 117], 60.00th=[ 130], | 70.00th=[ 148], 80.00th=[ 171], 90.00th=[ 205], 95.00th=[ 232], | 99.00th=[ 309], 99.50th=[ 347], 99.90th=[ 477], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 56, per=24.77%, avg=24.53, stdev=10.09, samples=496 iops : min= 1, max= 14, avg= 5.51, stdev= 2.61, samples=496 lat (msec) : 10=3.94%, 20=18.13%, 50=19.79%, 100=22.43%, 250=33.63% lat (msec) : 500=2.02%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.19%, ctx=5331, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144694: Thu Aug 27 07:35:23 2026 read: IOPS=5, BW=23.4KiB/s (23.0kB/s)(5940KiB/253644msec) clat (msec): min=5, max=1015, avg=32.53, stdev=40.99 lat (msec): min=5, max=1015, avg=32.53, stdev=40.99 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 44], 90.00th=[ 68], 95.00th=[ 88], | 99.00th=[ 150], 99.50th=[ 197], 99.90th=[ 535], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 96, per=27.56%, avg=25.91, stdev=17.15, samples=443 iops : min= 1, max= 24, avg= 5.86, stdev= 4.33, samples=443 write: IOPS=6, BW=25.0KiB/s (25.6kB/s)(6348KiB/253644msec); 0 zone resets clat (msec): min=39, max=420, avg=129.12, stdev=54.84 lat (msec): min=39, max=420, avg=129.13, stdev=54.84 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 64], 10.00th=[ 71], 20.00th=[ 84], | 30.00th=[ 95], 40.00th=[ 106], 50.00th=[ 118], 60.00th=[ 133], | 70.00th=[ 148], 80.00th=[ 167], 90.00th=[ 201], 95.00th=[ 241], | 99.00th=[ 305], 99.50th=[ 338], 99.90th=[ 363], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 56, per=24.78%, avg=24.53, stdev=10.03, samples=499 iops : min= 1, max= 14, avg= 5.51, stdev= 2.59, samples=499 lat (msec) : 10=3.97%, 20=17.81%, 50=19.43%, 100=23.63%, 250=33.01% lat (msec) : 500=2.08%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.16%, ctx=5149, 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=144696: Thu Aug 27 07:35:23 2026 read: IOPS=5, BW=23.8KiB/s (24.4kB/s)(6028KiB/253420msec) clat (msec): min=5, max=310, avg=31.43, stdev=28.79 lat (msec): min=5, max=310, avg=31.44, stdev=28.79 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 43], 90.00th=[ 65], 95.00th=[ 85], | 99.00th=[ 146], 99.50th=[ 182], 99.90th=[ 288], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 7, max= 102, per=27.26%, avg=25.62, stdev=17.78, samples=455 iops : min= 1, max= 25, avg= 5.78, stdev= 4.49, samples=455 write: IOPS=6, BW=24.7KiB/s (25.3kB/s)(6260KiB/253420msec); 0 zone resets clat (msec): min=36, max=1256, avg=131.40, stdev=65.36 lat (msec): min=36, max=1256, avg=131.41, stdev=65.36 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 63], 10.00th=[ 70], 20.00th=[ 84], | 30.00th=[ 96], 40.00th=[ 107], 50.00th=[ 117], 60.00th=[ 132], | 70.00th=[ 150], 80.00th=[ 169], 90.00th=[ 207], 95.00th=[ 241], | 99.00th=[ 330], 99.50th=[ 368], 99.90th=[ 567], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7, max= 55, per=24.72%, avg=24.47, stdev=10.05, samples=494 iops : min= 1, max= 13, avg= 5.49, stdev= 2.59, samples=494 lat (msec) : 10=3.48%, 20=18.13%, 50=20.31%, 100=22.92%, 250=32.75% lat (msec) : 500=2.34%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.14%, ctx=5160, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144697: Thu Aug 27 07:35:23 2026 read: IOPS=5, BW=23.9KiB/s (24.5kB/s)(6052KiB/253285msec) clat (msec): min=5, max=343, avg=31.53, stdev=29.34 lat (msec): min=5, max=343, avg=31.54, stdev=29.34 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 43], 90.00th=[ 64], 95.00th=[ 88], | 99.00th=[ 144], 99.50th=[ 176], 99.90th=[ 292], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 119, per=27.95%, avg=26.27, stdev=17.65, samples=445 iops : min= 1, max= 29, avg= 5.94, stdev= 4.44, samples=445 write: IOPS=6, BW=24.6KiB/s (25.2kB/s)(6236KiB/253285msec); 0 zone resets clat (msec): min=37, max=1140, avg=131.58, stdev=60.95 lat (msec): min=37, max=1140, avg=131.59, stdev=60.96 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 61], 10.00th=[ 71], 20.00th=[ 85], | 30.00th=[ 96], 40.00th=[ 110], 50.00th=[ 123], 60.00th=[ 136], | 70.00th=[ 150], 80.00th=[ 169], 90.00th=[ 205], 95.00th=[ 234], | 99.00th=[ 296], 99.50th=[ 342], 99.90th=[ 527], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 56, per=24.67%, avg=24.43, stdev= 9.83, samples=492 iops : min= 1, max= 14, avg= 5.48, stdev= 2.54, samples=492 lat (msec) : 10=3.87%, 20=18.03%, 50=19.79%, 100=22.75%, 250=33.72% lat (msec) : 500=1.76%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.15%, ctx=5262, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=94.7KiB/s (96.9kB/s), 23.4KiB/s-23.9KiB/s (23.0kB/s-24.5kB/s), io=23.4MiB (24.6MB), run=252906-253644msec WRITE: bw=99.1KiB/s (101kB/s), 24.6KiB/s-25.0KiB/s (25.2kB/s-25.6kB/s), io=24.6MiB (25.7MB), run=252906-253644msec 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=144754: Thu Aug 27 07:35:59 2026 read: IOPS=17, BW=273KiB/s (279kB/s)(5920KiB/21715msec) clat (usec): min=35, max=117900, avg=30507.58, stdev=23247.69 lat (usec): min=35, max=117901, avg=30508.65, stdev=23247.72 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 58], 10.00th=[ 62], 20.00th=[ 3654], | 30.00th=[ 19530], 40.00th=[ 23987], 50.00th=[ 27919], 60.00th=[ 34866], | 70.00th=[ 40109], 80.00th=[ 46400], 90.00th=[ 57934], 95.00th=[ 74974], | 99.00th=[110625], 99.50th=[114820], 99.90th=[117965], 99.95th=[117965], | 99.99th=[117965] bw ( KiB/s): min= 157, max= 544, per=26.05%, avg=274.26, stdev=89.12, samples=42 iops : min= 9, max= 34, avg=16.43, stdev= 5.61, samples=42 write: IOPS=18, BW=293KiB/s (300kB/s)(6368KiB/21715msec); 0 zone resets clat (usec): min=1472, max=147443, avg=26071.06, stdev=27188.07 lat (usec): min=1474, max=147444, avg=26073.07, stdev=27188.13 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1713], 10.00th=[ 2040], 20.00th=[ 4080], | 30.00th=[ 6325], 40.00th=[ 9503], 50.00th=[ 14222], 60.00th=[ 24773], | 70.00th=[ 35390], 80.00th=[ 48497], 90.00th=[ 63701], 95.00th=[ 83362], | 99.00th=[129500], 99.50th=[145753], 99.90th=[147850], 99.95th=[147850], | 99.99th=[147850] bw ( KiB/s): min= 64, max= 509, per=26.81%, avg=296.76, stdev=93.95, samples=42 iops : min= 4, max= 31, avg=17.86, stdev= 5.82, samples=42 lat (usec) : 50=1.43%, 100=7.42%, 250=0.26%, 500=0.13% lat (msec) : 2=4.95%, 4=5.73%, 10=11.46%, 20=12.76%, 50=39.45% lat (msec) : 100=15.10%, 250=1.30% cpu : usr=0.12%, sys=6.69%, ctx=1414, 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=144755: Thu Aug 27 07:35:59 2026 read: IOPS=15, BW=253KiB/s (259kB/s)(5744KiB/22746msec) clat (usec): min=34, max=173899, avg=31927.06, stdev=23792.17 lat (usec): min=34, max=173901, avg=31947.09, stdev=23769.40 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 65], 20.00th=[ 13435], | 30.00th=[ 19530], 40.00th=[ 25560], 50.00th=[ 28967], 60.00th=[ 35390], | 70.00th=[ 42206], 80.00th=[ 51119], 90.00th=[ 62129], 95.00th=[ 69731], | 99.00th=[ 90702], 99.50th=[145753], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 30, max= 439, per=23.53%, avg=247.77, stdev=94.04, samples=44 iops : min= 1, max= 27, avg=14.75, stdev= 5.97, samples=44 write: IOPS=17, BW=288KiB/s (295kB/s)(6544KiB/22746msec); 0 zone resets clat (usec): min=1357, max=252572, avg=27517.71, stdev=31949.88 lat (usec): min=1358, max=252575, avg=27519.71, stdev=31949.90 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1795], 10.00th=[ 2474], 20.00th=[ 4621], | 30.00th=[ 6915], 40.00th=[ 10159], 50.00th=[ 15664], 60.00th=[ 21890], | 70.00th=[ 33817], 80.00th=[ 48497], 90.00th=[ 65274], 95.00th=[ 87557], | 99.00th=[131597], 99.50th=[135267], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 95, max= 504, per=25.20%, avg=278.95, stdev=119.68, samples=44 iops : min= 5, max= 31, avg=16.75, stdev= 7.56, samples=44 lat (usec) : 50=0.91%, 100=6.38%, 250=0.65%, 750=0.13%, 1000=0.26% lat (msec) : 2=4.17%, 4=4.69%, 10=12.63%, 20=15.10%, 50=34.77% lat (msec) : 100=18.36%, 250=1.82%, 500=0.13% cpu : usr=0.08%, sys=6.71%, ctx=1449, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144756: Thu Aug 27 07:35:59 2026 read: IOPS=17, BW=285KiB/s (292kB/s)(6256KiB/21924msec) clat (usec): min=34, max=192023, avg=29920.13, stdev=23367.96 lat (usec): min=34, max=192024, avg=29921.31, stdev=23368.10 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 2704], | 30.00th=[ 19268], 40.00th=[ 23987], 50.00th=[ 27395], 60.00th=[ 33817], | 70.00th=[ 39584], 80.00th=[ 46924], 90.00th=[ 57410], 95.00th=[ 69731], | 99.00th=[ 99091], 99.50th=[130548], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 94, max= 508, per=27.24%, avg=286.84, stdev=94.21, samples=43 iops : min= 5, max= 31, avg=17.23, stdev= 5.96, samples=43 write: IOPS=17, BW=275KiB/s (282kB/s)(6032KiB/21924msec); 0 zone resets clat (usec): min=1403, max=206523, avg=26899.57, stdev=28019.91 lat (usec): min=1405, max=206525, avg=26901.60, stdev=28019.95 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1926], 10.00th=[ 2802], 20.00th=[ 4555], | 30.00th=[ 7242], 40.00th=[ 11076], 50.00th=[ 18220], 60.00th=[ 25822], | 70.00th=[ 33162], 80.00th=[ 45876], 90.00th=[ 63701], 95.00th=[ 80217], | 99.00th=[143655], 99.50th=[160433], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 126, max= 541, per=24.69%, avg=273.30, stdev=91.74, samples=43 iops : min= 7, max= 33, avg=16.37, stdev= 5.78, samples=43 lat (usec) : 50=1.17%, 100=7.94%, 250=0.52%, 500=0.26% lat (msec) : 2=2.86%, 4=6.12%, 10=9.90%, 20=12.89%, 50=41.67% lat (msec) : 100=15.49%, 250=1.17% cpu : usr=0.08%, sys=7.00%, ctx=1502, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144757: Thu Aug 27 07:35:59 2026 read: IOPS=17, BW=281KiB/s (288kB/s)(6032KiB/21464msec) clat (usec): min=37, max=145417, avg=30683.86, stdev=23452.27 lat (usec): min=37, max=145418, avg=30684.95, stdev=23452.26 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 8356], | 30.00th=[ 18744], 40.00th=[ 23462], 50.00th=[ 28967], 60.00th=[ 35390], | 70.00th=[ 42730], 80.00th=[ 48497], 90.00th=[ 56886], 95.00th=[ 67634], | 99.00th=[123208], 99.50th=[131597], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 63, max= 478, per=26.59%, avg=280.02, stdev=90.32, samples=42 iops : min= 3, max= 29, avg=16.79, stdev= 5.71, samples=42 write: IOPS=18, BW=291KiB/s (298kB/s)(6256KiB/21464msec); 0 zone resets clat (usec): min=1491, max=149318, avg=25209.25, stdev=25402.74 lat (usec): min=1493, max=149321, avg=25211.76, stdev=25402.25 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1844], 10.00th=[ 2671], 20.00th=[ 4883], | 30.00th=[ 6915], 40.00th=[ 10290], 50.00th=[ 16450], 60.00th=[ 22152], | 70.00th=[ 31065], 80.00th=[ 45876], 90.00th=[ 60031], 95.00th=[ 76022], | 99.00th=[120062], 99.50th=[135267], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 123, max= 542, per=26.42%, avg=292.48, stdev=101.98, samples=42 iops : min= 7, max= 33, avg=17.57, stdev= 6.40, samples=42 lat (usec) : 50=1.17%, 100=7.68%, 250=0.26%, 500=0.13% lat (msec) : 2=3.52%, 4=5.99%, 10=11.59%, 20=14.32%, 50=38.28% lat (msec) : 100=15.76%, 250=1.30% cpu : usr=0.09%, sys=7.35%, ctx=1485, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1053KiB/s (1078kB/s), 253KiB/s-285KiB/s (259kB/s-292kB/s), io=23.4MiB (24.5MB), run=21464-22746msec WRITE: bw=1108KiB/s (1134kB/s), 275KiB/s-293KiB/s (282kB/s-300kB/s), io=24.6MiB (25.8MB), run=21464-22746msec fio: pid=144748, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=144748: Thu Aug 27 07:36:32 2026 read: IOPS=6, BW=95.6KiB/s (97.9kB/s)(4112KiB/43000msec) clat (msec): min=7, max=211, avg=34.66, stdev=29.60 lat (msec): min=7, max=211, avg=34.66, stdev=29.60 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 47], 90.00th=[ 79], 95.00th=[ 106], | 99.00th=[ 138], 99.50th=[ 138], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 30, max= 445, per=25.45%, avg=101.04, stdev=66.44, samples=80 iops : min= 1, max= 27, avg= 5.55, stdev= 4.23, samples=80 write: IOPS=6, BW=104KiB/s (107kB/s)(4480KiB/43000msec); 0 zone resets clat (msec): min=43, max=331, avg=121.16, stdev=46.94 lat (msec): min=43, max=331, avg=121.16, stdev=46.94 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 63], 10.00th=[ 70], 20.00th=[ 82], | 30.00th=[ 92], 40.00th=[ 102], 50.00th=[ 111], 60.00th=[ 121], | 70.00th=[ 138], 80.00th=[ 161], 90.00th=[ 186], 95.00th=[ 207], | 99.00th=[ 266], 99.50th=[ 305], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 192, per=24.80%, avg=103.68, stdev=41.12, samples=85 iops : min= 1, max= 12, avg= 5.71, stdev= 2.69, samples=85 lat (msec) : 10=1.49%, 20=17.84%, 50=19.89%, 100=26.02%, 250=34.01% lat (msec) : 500=0.56% cpu : usr=0.04%, sys=1.35%, ctx=905, 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=258,280,0,0 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=144749: Thu Aug 27 07:36:32 2026 read: IOPS=6, BW=103KiB/s (106kB/s)(5744KiB/55660msec) clat (msec): min=6, max=218, avg=30.52, stdev=30.18 lat (msec): min=6, max=218, avg=30.53, stdev=30.18 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 40], 90.00th=[ 63], 95.00th=[ 91], | 99.00th=[ 159], 99.50th=[ 218], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 31, max= 414, per=28.04%, avg=111.33, stdev=73.29, samples=101 iops : min= 1, max= 25, avg= 6.23, stdev= 4.65, samples=101 write: IOPS=7, BW=118KiB/s (120kB/s)(6544KiB/55660msec); 0 zone resets clat (msec): min=41, max=299, avg=109.14, stdev=47.08 lat (msec): min=41, max=299, avg=109.14, stdev=47.08 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 55], 10.00th=[ 61], 20.00th=[ 69], | 30.00th=[ 80], 40.00th=[ 90], 50.00th=[ 99], 60.00th=[ 110], | 70.00th=[ 124], 80.00th=[ 142], 90.00th=[ 176], 95.00th=[ 207], | 99.00th=[ 266], 99.50th=[ 268], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 223, per=27.96%, avg=116.86, stdev=48.89, samples=110 iops : min= 1, max= 13, avg= 6.56, stdev= 3.16, samples=110 lat (msec) : 10=3.78%, 20=18.62%, 50=19.40%, 100=30.73%, 250=26.69% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.35%, ctx=1368, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144750: Thu Aug 27 07:36:32 2026 read: IOPS=7, BW=116KiB/s (119kB/s)(6256KiB/53869msec) clat (msec): min=5, max=248, avg=29.55, stdev=27.30 lat (msec): min=5, max=248, avg=29.55, stdev=27.30 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 28], 80.00th=[ 39], 90.00th=[ 61], 95.00th=[ 94], | 99.00th=[ 138], 99.50th=[ 174], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 30, max= 480, per=30.81%, avg=122.32, stdev=83.75, samples=101 iops : min= 1, max= 30, avg= 6.90, stdev= 5.34, samples=101 write: IOPS=6, BW=112KiB/s (115kB/s)(6032KiB/53869msec); 0 zone resets clat (msec): min=39, max=319, avg=111.89, stdev=46.25 lat (msec): min=39, max=319, avg=111.89, stdev=46.25 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 74], | 30.00th=[ 84], 40.00th=[ 92], 50.00th=[ 100], 60.00th=[ 111], | 70.00th=[ 127], 80.00th=[ 150], 90.00th=[ 178], 95.00th=[ 205], | 99.00th=[ 262], 99.50th=[ 292], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 31, max= 223, per=26.84%, avg=112.17, stdev=40.40, samples=105 iops : min= 1, max= 13, avg= 6.27, stdev= 2.64, samples=105 lat (msec) : 10=3.39%, 20=22.14%, 50=19.27%, 100=29.30%, 250=25.39% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.46%, ctx=1423, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144751: Thu Aug 27 07:36:32 2026 read: IOPS=6, BW=110KiB/s (113kB/s)(6032KiB/54813msec) clat (msec): min=6, max=219, avg=29.99, stdev=28.68 lat (msec): min=6, max=219, avg=29.99, stdev=28.68 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 38], 90.00th=[ 63], 95.00th=[ 89], | 99.00th=[ 161], 99.50th=[ 182], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 31, max= 319, per=29.29%, avg=116.29, stdev=71.71, samples=101 iops : min= 1, max= 19, avg= 6.53, stdev= 4.61, samples=101 write: IOPS=7, BW=114KiB/s (117kB/s)(6256KiB/54813msec); 0 zone resets clat (msec): min=37, max=357, avg=110.97, stdev=45.20 lat (msec): min=37, max=357, avg=110.97, stdev=45.20 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 74], | 30.00th=[ 83], 40.00th=[ 94], 50.00th=[ 105], 60.00th=[ 116], | 70.00th=[ 127], 80.00th=[ 140], 90.00th=[ 169], 95.00th=[ 199], | 99.00th=[ 262], 99.50th=[ 296], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 223, per=27.40%, avg=114.53, stdev=43.10, samples=107 iops : min= 1, max= 13, avg= 6.42, stdev= 2.79, samples=107 lat (msec) : 10=2.34%, 20=22.40%, 50=18.49%, 100=28.13%, 250=28.13% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.44%, ctx=1407, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=398KiB/s (407kB/s), 95.6KiB/s-116KiB/s (97.9kB/s-119kB/s), io=21.6MiB (22.7MB), run=43000-55660msec WRITE: bw=419KiB/s (429kB/s), 104KiB/s-118KiB/s (107kB/s-120kB/s), io=22.8MiB (23.9MB), run=43000-55660msec 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=144772: Thu Aug 27 07:36:47 2026 read: IOPS=1, BW=1893KiB/s (1938kB/s)(7168KiB/3787msec) clat (msec): min=76, max=458, avg=183.85, stdev=147.82 lat (msec): min=76, max=458, avg=183.85, stdev=147.82 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 82], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 102], 60.00th=[ 171], | 70.00th=[ 171], 80.00th=[ 313], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 1976, max= 5634, per=89.57%, avg=3216.33, stdev=2094.00, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1352KiB/s (1384kB/s)(5120KiB/3787msec); 0 zone resets clat (msec): min=172, max=890, avg=477.20, stdev=284.69 lat (msec): min=172, max=891, avg=477.92, stdev=285.03 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 634], 80.00th=[ 634], 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= 1408, max= 4015, per=48.66%, avg=2446.67, stdev=1381.85, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=25.00%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.05%, sys=4.33%, ctx=70, 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=144773: Thu Aug 27 07:36:47 2026 read: IOPS=0, BW=359KiB/s (368kB/s)(2048KiB/5702msec) clat (msec): min=137, max=327, avg=232.37, stdev=134.65 lat (msec): min=137, max=327, avg=232.37, stdev=134.65 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 330], 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= 1402, max= 2007, per=47.47%, avg=1704.50, stdev=427.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1796KiB/s (1839kB/s)(10.0MiB/5702msec); 0 zone resets clat (msec): min=117, max=1374, avg=512.62, stdev=379.37 lat (msec): min=117, max=1374, avg=512.71, stdev=379.36 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 178], | 30.00th=[ 184], 40.00th=[ 326], 50.00th=[ 435], 60.00th=[ 460], | 70.00th=[ 575], 80.00th=[ 625], 90.00th=[ 852], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 1976, max= 4208, per=46.31%, avg=2328.57, stdev=829.22, samples=7 iops : min= 1, max= 4, avg= 1.43, stdev= 1.13, samples=7 lat (msec) : 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.02%, sys=4.65%, ctx=106, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144774: Thu Aug 27 07:36:47 2026 read: IOPS=1, BW=1456KiB/s (1491kB/s)(6144KiB/4220msec) clat (msec): min=129, max=508, avg=278.12, stdev=141.35 lat (msec): min=129, max=508, avg=278.13, stdev=141.35 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 253], 50.00th=[ 253], 60.00th=[ 288], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 1984, max= 3953, per=69.53%, avg=2496.75, stdev=971.14, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1456KiB/s (1491kB/s)(6144KiB/4220msec); 0 zone resets clat (msec): min=205, max=764, avg=419.89, stdev=249.61 lat (msec): min=205, max=764, avg=420.03, stdev=249.67 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 380], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1984, max= 4208, per=54.57%, avg=2743.67, stdev=1268.45, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.02%, sys=3.98%, ctx=71, 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=144775: Thu Aug 27 07:36:47 2026 read: IOPS=1, BW=1164KiB/s (1192kB/s)(5120KiB/4397msec) clat (msec): min=176, max=798, avg=399.05, stdev=237.12 lat (msec): min=176, max=798, avg=399.05, stdev=237.12 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1984, max= 4079, per=74.91%, avg=2690.00, stdev=1202.96, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1630KiB/s (1669kB/s)(7168KiB/4397msec); 0 zone resets clat (msec): min=163, max=646, avg=328.06, stdev=183.64 lat (msec): min=163, max=646, avg=328.14, stdev=183.63 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 201], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 245], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 523], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1917, max= 4071, per=51.13%, avg=2571.00, stdev=920.22, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=3.57%, ctx=75, 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=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=3592KiB/s (3678kB/s), 359KiB/s-1893KiB/s (368kB/s-1938kB/s), io=20.0MiB (20.0MB), run=3787-5702msec WRITE: bw=5028KiB/s (5149kB/s), 1352KiB/s-1796KiB/s (1384kB/s-1839kB/s), io=28.0MiB (29.4MB), run=3787-5702msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144777: Thu Aug 27 07:36:47 2026 read: IOPS=2, BW=2211KiB/s (2264kB/s)(7168KiB/3242msec) clat (msec): min=2, max=464, avg=263.93, stdev=169.88 lat (msec): min=2, max=464, avg=263.93, stdev=169.88 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 167], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 201], 60.00th=[ 384], | 70.00th=[ 384], 80.00th=[ 443], 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= 1961, max= 3430, per=58.31%, avg=2298.40, stdev=633.40, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1579KiB/s (1617kB/s)(5120KiB/3242msec); 0 zone resets clat (msec): min=181, max=352, avg=278.52, stdev=68.98 lat (msec): min=181, max=352, avg=278.58, stdev=68.97 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 259], 40.00th=[ 259], 50.00th=[ 264], 60.00th=[ 264], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 1961, max= 4071, per=48.65%, avg=2685.00, stdev=1200.71, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 4=8.33%, 250=33.33%, 500=58.33% cpu : usr=0.00%, sys=19.44%, ctx=196, 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=144778: Thu Aug 27 07:36:47 2026 read: IOPS=0, BW=394KiB/s (404kB/s)(2048KiB/5195msec) clat (msec): min=183, max=540, avg=362.11, stdev=252.79 lat (msec): min=183, max=540, avg=362.11, stdev=252.79 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 184], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1818, max= 2039, per=48.92%, avg=1928.50, stdev=156.27, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1971KiB/s (2018kB/s)(10.0MiB/5195msec); 0 zone resets clat (msec): min=174, max=1159, avg=446.71, stdev=294.72 lat (msec): min=174, max=1159, avg=446.91, stdev=294.63 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 213], | 30.00th=[ 257], 40.00th=[ 279], 50.00th=[ 330], 60.00th=[ 418], | 70.00th=[ 456], 80.00th=[ 493], 90.00th=[ 701], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 2023, max= 4096, per=47.05%, avg=2596.86, stdev=966.33, samples=7 iops : min= 1, max= 4, avg= 1.71, stdev= 1.25, samples=7 lat (msec) : 250=25.00%, 500=50.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=11.80%, ctx=179, 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=144779: Thu Aug 27 07:36:47 2026 read: IOPS=1, BW=1507KiB/s (1544kB/s)(6144KiB/4076msec) clat (usec): min=634, max=278857, avg=91499.65, stdev=139418.21 lat (usec): min=636, max=278858, avg=91501.16, stdev=139418.11 clat percentiles (usec): | 1.00th=[ 635], 5.00th=[ 635], 10.00th=[ 635], 20.00th=[ 1500], | 30.00th=[ 1500], 40.00th=[ 1745], 50.00th=[ 1745], 60.00th=[ 2376], | 70.00th=[263193], 80.00th=[263193], 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= 2023, max= 4047, per=64.33%, avg=2536.00, stdev=1007.36, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1507KiB/s (1544kB/s)(6144KiB/4076msec); 0 zone resets clat (msec): min=267, max=1074, avg=586.61, stdev=298.69 lat (msec): min=267, max=1074, avg=586.68, stdev=298.65 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 2023, max= 3923, per=45.32%, avg=2501.00, stdev=948.02, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=16.67%, 4=8.33%, 500=33.33%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=12.22%, ctx=221, 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=144780: Thu Aug 27 07:36:47 2026 read: IOPS=0, BW=994KiB/s (1018kB/s)(5120KiB/5149msec) clat (usec): min=814, max=1104.2k, avg=358584.08, stdev=511374.16 lat (usec): min=816, max=1104.2k, avg=358585.50, stdev=511373.94 clat percentiles (usec): | 1.00th=[ 816], 5.00th=[ 816], 10.00th=[ 816], | 20.00th=[ 816], 30.00th=[ 996], 40.00th=[ 996], | 50.00th=[ 1614], 60.00th=[ 1614], 70.00th=[ 683672], | 80.00th=[ 683672], 90.00th=[1098908], 95.00th=[1098908], | 99.00th=[1098908], 99.50th=[1098908], 99.90th=[1098908], | 99.95th=[1098908], 99.99th=[1098908] bw ( KiB/s): min= 2039, max= 4047, per=68.70%, avg=2708.33, stdev=1159.32, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1392KiB/s (1426kB/s)(7168KiB/5149msec); 0 zone resets clat (msec): min=135, max=1007, avg=478.65, stdev=350.78 lat (msec): min=135, max=1007, avg=478.89, stdev=350.79 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 153], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 489], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 852], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1961, max= 4079, per=44.04%, avg=2430.60, stdev=922.08, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 1000=16.67% lat (msec) : 2=8.33%, 250=25.00%, 500=8.33%, 750=16.67%, 1000=8.33% lat (msec) : 2000=16.67% cpu : usr=0.00%, sys=9.19%, ctx=237, 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=3942KiB/s (4037kB/s), 394KiB/s-2211KiB/s (404kB/s-2264kB/s), io=20.0MiB (20.0MB), run=3242-5195msec WRITE: bw=5519KiB/s (5652kB/s), 1392KiB/s-1971KiB/s (1426kB/s-2018kB/s), io=28.0MiB (29.4MB), run=3242-5195msec 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=144786: Thu Aug 27 07:37:02 2026 read: IOPS=0, BW=3956KiB/s (4051kB/s)(12.0MiB/3106msec) clat (msec): min=782, max=1084, avg=957.00, stdev=156.62 lat (msec): min=782, max=1084, avg=957.00, stdev=156.62 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=17.42%, ctx=417, 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=144787: Thu Aug 27 07:37:02 2026 read: IOPS=0, BW=1174KiB/s (1202kB/s)(4096KiB/3488msec) clat (nsec): min=954331k, max=954331k, avg=954330558.00, stdev= 0.00 lat (nsec): min=954334k, max=954334k, avg=954334088.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 953], 5.00th=[ 953], 10.00th=[ 953], 20.00th=[ 953], | 30.00th=[ 953], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2349KiB/s (2405kB/s)(8192KiB/3488msec); 0 zone resets clat (msec): min=443, max=1749, avg=1096.82, stdev=923.27 lat (msec): min=444, max=1753, avg=1099.09, stdev=925.72 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 1754], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 8159, max= 8159, per=86.85%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=6.02%, ctx=165, 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=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=144789: Thu Aug 27 07:37:02 2026 write: IOPS=1, BW=4571KiB/s (4681kB/s)(12.0MiB/2688msec); 0 zone resets clat (msec): min=674, max=1015, avg=794.29, stdev=191.43 lat (msec): min=674, max=1015, avg=795.48, stdev=190.94 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 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= 8159, max= 8192, per=87.03%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.04%, sys=7.89%, ctx=95, 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=144790: Thu Aug 27 07:37:02 2026 write: IOPS=1, BW=4496KiB/s (4604kB/s)(12.0MiB/2733msec); 0 zone resets clat (msec): min=428, max=1547, avg=820.60, stdev=630.44 lat (msec): min=429, max=1548, avg=821.28, stdev=630.27 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 485], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=7.50%, ctx=91, 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=4697KiB/s (4810kB/s), 1174KiB/s-3956KiB/s (1202kB/s-4051kB/s), io=16.0MiB (16.8MB), run=3106-3488msec WRITE: bw=9394KiB/s (9620kB/s), 2349KiB/s-4571KiB/s (2405kB/s-4681kB/s), io=32.0MiB (33.6MB), run=2688-3488msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144791: Thu Aug 27 07:37:02 2026 read: IOPS=1, BW=4409KiB/s (4515kB/s)(12.0MiB/2787msec) clat (msec): min=206, max=1541, avg=928.21, stdev=674.27 lat (msec): min=206, max=1541, avg=928.21, stdev=674.27 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1036], | 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= 8078, max= 8175, per=100.00%, avg=8126.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.04%, sys=3.91%, ctx=28, 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=144792: Thu Aug 27 07:37:02 2026 read: IOPS=0, BW=1303KiB/s (1334kB/s)(4096KiB/3144msec) clat (nsec): min=915072k, max=915072k, avg=915071671.00, stdev= 0.00 lat (nsec): min=915073k, max=915073k, avg=915072943.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 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= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2606KiB/s (2668kB/s)(8192KiB/3144msec); 0 zone resets clat (msec): min=810, max=1414, avg=1112.86, stdev=427.21 lat (msec): min=811, max=1416, avg=1113.81, stdev=428.06 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 1418], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8047, max= 8047, per=87.95%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=2.80%, ctx=38, 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=144794: Thu Aug 27 07:37:02 2026 write: IOPS=0, BW=3431KiB/s (3514kB/s)(12.0MiB/3581msec); 0 zone resets clat (msec): min=258, max=1665, avg=1192.07, stdev=808.44 lat (msec): min=260, max=1665, avg=1193.09, stdev=807.54 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 1653], 50.00th=[ 1653], 60.00th=[ 1653], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 8047, max= 8047, per=87.95%, avg=8047.00, 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=3.66%, ctx=43, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144795: Thu Aug 27 07:37:02 2026 write: IOPS=1, BW=4685KiB/s (4797kB/s)(12.0MiB/2623msec); 0 zone resets clat (msec): min=410, max=1514, avg=873.58, stdev=573.19 lat (msec): min=410, max=1514, avg=873.92, stdev=573.26 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 1519], 80.00th=[ 1519], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 8094, max= 8175, per=88.90%, avg=8134.50, stdev=57.28, 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=8.12%, ctx=61, 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=5211KiB/s (5336kB/s), 1303KiB/s-4409KiB/s (1334kB/s-4515kB/s), io=16.0MiB (16.8MB), run=2787-3144msec WRITE: bw=9151KiB/s (9370kB/s), 2606KiB/s-4685KiB/s (2668kB/s-4797kB/s), io=32.0MiB (33.6MB), run=2623-3581msec