== sanity test 398b: DIO and buffer IO race ============== 12:41:01 (1788626461) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.99173 s, 10.1 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=180498: Sat Sep 5 12:43:00 2026 read: IOPS=14, BW=58.4KiB/s (59.8kB/s)(5992KiB/102562msec) clat (usec): min=41, max=629715, avg=37470.28, stdev=28674.90 lat (usec): min=42, max=629716, avg=37473.02, stdev=28675.00 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 8586], 10.00th=[ 13698], 20.00th=[ 19006], | 30.00th=[ 23200], 40.00th=[ 26608], 50.00th=[ 31851], 60.00th=[ 37487], | 70.00th=[ 44303], 80.00th=[ 52691], 90.00th=[ 67634], 95.00th=[ 82314], | 99.00th=[124257], 99.50th=[132645], 99.90th=[233833], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 7, max= 119, per=24.86%, avg=58.17, stdev=21.19, samples=202 iops : min= 1, max= 29, avg=13.89, stdev= 5.35, samples=202 write: IOPS=15, BW=61.4KiB/s (62.9kB/s)(6296KiB/102562msec); 0 zone resets clat (usec): min=898, max=219059, avg=29431.40, stdev=29840.19 lat (usec): min=898, max=219060, avg=29433.34, stdev=29839.97 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1270], 10.00th=[ 1795], 20.00th=[ 3294], | 30.00th=[ 5866], 40.00th=[ 13698], 50.00th=[ 22152], 60.00th=[ 29492], | 70.00th=[ 38011], 80.00th=[ 51643], 90.00th=[ 70779], 95.00th=[ 86508], | 99.00th=[127402], 99.50th=[141558], 99.90th=[212861], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 7, max= 135, per=24.95%, avg=61.14, stdev=24.40, samples=202 iops : min= 1, max= 33, avg=14.63, stdev= 6.13, samples=202 lat (usec) : 50=0.49%, 100=1.40%, 250=0.16%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=6.32%, 4=5.14%, 10=7.36%, 20=14.16%, 50=42.81% lat (msec) : 100=19.11%, 250=2.77%, 750=0.03% cpu : usr=0.07%, sys=5.82%, ctx=6714, 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=180499: Sat Sep 5 12:43:00 2026 read: IOPS=14, BW=58.8KiB/s (60.2kB/s)(5940KiB/101012msec) clat (usec): min=40, max=687599, avg=37473.37, stdev=28308.05 lat (usec): min=42, max=687600, avg=37475.24, stdev=28308.15 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10290], 10.00th=[ 14091], 20.00th=[ 19268], | 30.00th=[ 23725], 40.00th=[ 27132], 50.00th=[ 32375], 60.00th=[ 39060], | 70.00th=[ 44303], 80.00th=[ 52691], 90.00th=[ 65274], 95.00th=[ 81265], | 99.00th=[114820], 99.50th=[131597], 99.90th=[193987], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 15, max= 119, per=25.03%, avg=58.58, stdev=20.18, samples=199 iops : min= 3, max= 29, avg=13.99, stdev= 5.06, samples=199 write: IOPS=15, BW=62.8KiB/s (64.4kB/s)(6348KiB/101012msec); 0 zone resets clat (usec): min=911, max=289556, avg=28494.48, stdev=29393.68 lat (usec): min=912, max=289558, avg=28500.77, stdev=29390.27 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1270], 10.00th=[ 1942], 20.00th=[ 3458], | 30.00th=[ 6063], 40.00th=[ 13435], 50.00th=[ 21627], 60.00th=[ 28443], | 70.00th=[ 36439], 80.00th=[ 48497], 90.00th=[ 66323], 95.00th=[ 84411], | 99.00th=[119014], 99.50th=[158335], 99.90th=[221250], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 7, max= 167, per=25.59%, avg=62.68, stdev=23.89, samples=199 iops : min= 1, max= 41, avg=15.03, stdev= 5.98, samples=199 lat (usec) : 50=0.20%, 100=1.20%, 250=0.23%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=5.63%, 4=6.35%, 10=7.32%, 20=13.70%, 50=44.47% lat (msec) : 100=18.49%, 250=2.15%, 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=5.88%, ctx=6636, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180500: Sat Sep 5 12:43:00 2026 read: IOPS=14, BW=59.4KiB/s (60.9kB/s)(6028KiB/101429msec) clat (usec): min=36, max=238130, avg=36818.40, stdev=25164.22 lat (usec): min=36, max=238132, avg=36819.99, stdev=25164.44 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 7898], 10.00th=[ 13960], 20.00th=[ 18482], | 30.00th=[ 22938], 40.00th=[ 26870], 50.00th=[ 31851], 60.00th=[ 36963], | 70.00th=[ 43254], 80.00th=[ 51119], 90.00th=[ 65799], 95.00th=[ 82314], | 99.00th=[124257], 99.50th=[141558], 99.90th=[225444], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 15, max= 112, per=25.27%, avg=59.14, stdev=21.45, samples=199 iops : min= 3, max= 28, avg=14.14, stdev= 5.40, samples=199 write: IOPS=15, BW=61.7KiB/s (63.2kB/s)(6260KiB/101429msec); 0 zone resets clat (usec): min=986, max=706248, avg=29285.02, stdev=33934.59 lat (usec): min=987, max=706251, avg=29289.83, stdev=33936.58 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1237], 10.00th=[ 1778], 20.00th=[ 3589], | 30.00th=[ 6652], 40.00th=[ 13698], 50.00th=[ 21365], 60.00th=[ 28181], | 70.00th=[ 37487], 80.00th=[ 50070], 90.00th=[ 66323], 95.00th=[ 85459], | 99.00th=[129500], 99.50th=[149947], 99.90th=[246416], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 135, per=25.04%, avg=61.35, stdev=23.48, samples=199 iops : min= 1, max= 33, avg=14.70, stdev= 5.90, samples=199 lat (usec) : 50=0.49%, 100=1.53%, 250=0.20%, 500=0.10%, 1000=0.07% lat (msec) : 2=6.15%, 4=4.82%, 10=7.19%, 20=15.66%, 50=43.46% lat (msec) : 100=17.32%, 250=2.99%, 750=0.03% cpu : usr=0.07%, sys=5.74%, ctx=6638, 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=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=180501: Sat Sep 5 12:43:00 2026 read: IOPS=14, BW=59.2KiB/s (60.6kB/s)(6052KiB/102274msec) clat (usec): min=41, max=240567, avg=37146.64, stdev=24764.60 lat (usec): min=42, max=240568, avg=37148.64, stdev=24764.38 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 1434], 10.00th=[ 13435], 20.00th=[ 18220], | 30.00th=[ 22152], 40.00th=[ 26870], 50.00th=[ 32637], 60.00th=[ 39060], | 70.00th=[ 45351], 80.00th=[ 53740], 90.00th=[ 66323], 95.00th=[ 80217], | 99.00th=[119014], 99.50th=[154141], 99.90th=[177210], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 15, max= 115, per=25.14%, avg=58.83, stdev=20.91, samples=201 iops : min= 3, max= 28, avg=14.05, stdev= 5.26, samples=201 write: IOPS=15, BW=60.0KiB/s (62.4kB/s)(6236KiB/102274msec); 0 zone resets clat (usec): min=916, max=688367, avg=29477.21, stdev=33390.07 lat (usec): min=917, max=688368, avg=29480.79, stdev=33390.33 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1254], 10.00th=[ 1745], 20.00th=[ 3195], | 30.00th=[ 5735], 40.00th=[ 12911], 50.00th=[ 21365], 60.00th=[ 29230], | 70.00th=[ 39060], 80.00th=[ 51643], 90.00th=[ 70779], 95.00th=[ 85459], | 99.00th=[115868], 99.50th=[139461], 99.90th=[206570], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 7, max= 144, per=24.74%, avg=60.61, stdev=24.55, samples=201 iops : min= 1, max= 36, avg=14.50, stdev= 6.17, samples=201 lat (usec) : 50=0.42%, 100=1.63%, 250=0.29%, 500=0.07%, 1000=0.07% lat (msec) : 2=5.92%, 4=5.86%, 10=7.52%, 20=14.84%, 50=41.05% lat (msec) : 100=19.86%, 250=2.44%, 750=0.03% cpu : usr=0.06%, sys=5.83%, ctx=6761, 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=234KiB/s (240kB/s), 58.4KiB/s-59.4KiB/s (59.8kB/s-60.9kB/s), io=23.4MiB (24.6MB), run=101012-102562msec WRITE: bw=245KiB/s (251kB/s), 60.0KiB/s-62.8KiB/s (62.4kB/s-64.4kB/s), io=24.6MiB (25.7MB), run=101012-102562msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180493: Sat Sep 5 12:43:29 2026 read: IOPS=11, BW=45.8KiB/s (46.9kB/s)(5992KiB/130872msec) clat (msec): min=4, max=706, avg=35.15, stdev=37.33 lat (msec): min=4, max=706, avg=35.15, stdev=37.33 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 36], 80.00th=[ 53], 90.00th=[ 81], 95.00th=[ 105], | 99.00th=[ 161], 99.50th=[ 182], 99.90th=[ 266], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7, max= 160, per=25.14%, avg=45.75, stdev=31.92, samples=256 iops : min= 1, max= 40, avg=10.79, stdev= 8.00, samples=256 write: IOPS=12, BW=48.1KiB/s (49.3kB/s)(6296KiB/130872msec); 0 zone resets clat (msec): min=8, max=320, avg=49.46, stdev=34.55 lat (msec): min=8, max=320, avg=49.46, stdev=34.55 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 46], | 70.00th=[ 59], 80.00th=[ 74], 90.00th=[ 99], 95.00th=[ 115], | 99.00th=[ 169], 99.50th=[ 178], 99.90th=[ 255], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 7, max= 143, per=25.19%, avg=47.86, stdev=30.96, samples=257 iops : min= 1, max= 35, avg=11.32, stdev= 7.79, samples=257 lat (msec) : 10=5.57%, 20=22.33%, 50=43.16%, 100=20.83%, 250=7.94% lat (msec) : 500=0.13%, 750=0.03% cpu : usr=0.06%, sys=2.09%, ctx=4825, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180494: Sat Sep 5 12:43:29 2026 read: IOPS=11, BW=45.4KiB/s (46.5kB/s)(5940KiB/130821msec) clat (msec): min=5, max=753, avg=33.20, stdev=34.95 lat (msec): min=5, max=753, avg=33.20, stdev=34.95 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 51], 90.00th=[ 75], 95.00th=[ 97], | 99.00th=[ 142], 99.50th=[ 161], 99.90th=[ 239], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 159, per=25.24%, avg=45.93, stdev=32.11, samples=253 iops : min= 1, max= 39, avg=10.83, stdev= 8.06, samples=253 write: IOPS=12, BW=48.5KiB/s (49.7kB/s)(6348KiB/130821msec); 0 zone resets clat (msec): min=8, max=371, avg=51.15, stdev=37.42 lat (msec): min=8, max=371, avg=51.15, stdev=37.41 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 47], | 70.00th=[ 62], 80.00th=[ 78], 90.00th=[ 102], 95.00th=[ 124], | 99.00th=[ 178], 99.50th=[ 199], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 7, max= 152, per=25.41%, avg=48.29, stdev=30.15, samples=257 iops : min= 1, max= 38, avg=11.43, stdev= 7.58, samples=257 lat (msec) : 10=5.34%, 20=23.70%, 50=41.44%, 100=22.07%, 250=7.36% lat (msec) : 500=0.07%, 1000=0.03% cpu : usr=0.06%, sys=2.11%, ctx=4799, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180495: Sat Sep 5 12:43:29 2026 read: IOPS=11, BW=46.0KiB/s (47.1kB/s)(6028KiB/131042msec) clat (msec): min=5, max=257, avg=34.04, stdev=31.02 lat (msec): min=5, max=257, avg=34.04, stdev=31.02 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 28], | 70.00th=[ 38], 80.00th=[ 52], 90.00th=[ 79], 95.00th=[ 100], | 99.00th=[ 136], 99.50th=[ 161], 99.90th=[ 224], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 7, max= 160, per=25.32%, avg=46.09, stdev=31.13, samples=255 iops : min= 1, max= 40, avg=10.87, stdev= 7.82, samples=255 write: IOPS=11, BW=47.8KiB/s (48.9kB/s)(6260KiB/131042msec); 0 zone resets clat (msec): min=8, max=786, avg=50.74, stdev=41.66 lat (msec): min=8, max=786, avg=50.74, stdev=41.66 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 46], | 70.00th=[ 59], 80.00th=[ 78], 90.00th=[ 100], 95.00th=[ 122], | 99.00th=[ 186], 99.50th=[ 201], 99.90th=[ 372], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 167, per=25.03%, avg=47.56, stdev=31.84, samples=256 iops : min= 1, max= 41, avg=11.24, stdev= 8.01, samples=256 lat (msec) : 10=5.24%, 20=23.83%, 50=42.25%, 100=21.22%, 250=7.32% lat (msec) : 500=0.10%, 1000=0.03% cpu : usr=0.06%, sys=2.11%, ctx=4861, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180496: Sat Sep 5 12:43:29 2026 read: IOPS=11, BW=45.9KiB/s (46.0kB/s)(6052KiB/131919msec) clat (msec): min=4, max=265, avg=35.56, stdev=34.20 lat (msec): min=4, max=265, avg=35.56, stdev=34.20 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 39], 80.00th=[ 54], 90.00th=[ 83], 95.00th=[ 108], | 99.00th=[ 161], 99.50th=[ 201], 99.90th=[ 257], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 7, max= 160, per=25.49%, avg=46.38, stdev=33.09, samples=255 iops : min= 1, max= 40, avg=10.95, stdev= 8.33, samples=255 write: IOPS=11, BW=47.3KiB/s (48.4kB/s)(6236KiB/131919msec); 0 zone resets clat (msec): min=8, max=787, avg=49.89, stdev=40.07 lat (msec): min=8, max=787, avg=49.89, stdev=40.07 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 46], | 70.00th=[ 58], 80.00th=[ 75], 90.00th=[ 97], 95.00th=[ 116], | 99.00th=[ 184], 99.50th=[ 197], 99.90th=[ 284], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 142, per=24.78%, avg=47.08, stdev=31.11, samples=258 iops : min= 1, max= 35, avg=11.13, stdev= 7.81, samples=258 lat (msec) : 10=5.40%, 20=23.34%, 50=41.99%, 100=21.45%, 250=7.65% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.06%, sys=2.12%, ctx=5002, 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=182KiB/s (186kB/s), 45.4KiB/s-46.0KiB/s (46.5kB/s-47.1kB/s), io=23.4MiB (24.6MB), run=130821-131919msec WRITE: bw=191KiB/s (195kB/s), 47.3KiB/s-48.5KiB/s (48.4kB/s-49.7kB/s), io=24.6MiB (25.7MB), run=130821-131919msec 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=180542: Sat Sep 5 12:44:03 2026 read: IOPS=14, BW=232KiB/s (237kB/s)(5920KiB/25550msec) clat (usec): min=29, max=186834, avg=34756.76, stdev=25359.56 lat (usec): min=29, max=186835, avg=34757.89, stdev=25359.56 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 68], 20.00th=[ 16188], | 30.00th=[ 22152], 40.00th=[ 27395], 50.00th=[ 32113], 60.00th=[ 35914], | 70.00th=[ 43779], 80.00th=[ 52691], 90.00th=[ 64226], 95.00th=[ 80217], | 99.00th=[121111], 99.50th=[137364], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 64, max= 382, per=24.28%, avg=227.28, stdev=74.84, samples=50 iops : min= 4, max= 23, avg=13.50, stdev= 4.62, samples=50 write: IOPS=15, BW=249KiB/s (255kB/s)(6368KiB/25550msec); 0 zone resets clat (usec): min=1369, max=145479, avg=31424.82, stdev=29300.21 lat (usec): min=1371, max=145481, avg=31428.29, stdev=29305.71 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 2024], 10.00th=[ 2900], 20.00th=[ 5276], | 30.00th=[ 10421], 40.00th=[ 15795], 50.00th=[ 22938], 60.00th=[ 30540], | 70.00th=[ 40109], 80.00th=[ 54789], 90.00th=[ 74974], 95.00th=[ 89654], | 99.00th=[132645], 99.50th=[145753], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 63, max= 497, per=25.15%, avg=247.68, stdev=89.42, samples=50 iops : min= 3, max= 31, avg=14.78, stdev= 5.69, samples=50 lat (usec) : 50=0.78%, 100=5.47%, 250=0.52%, 500=0.13% lat (msec) : 2=2.47%, 4=5.21%, 10=7.81%, 20=13.93%, 50=41.15% lat (msec) : 100=19.79%, 250=2.73% cpu : usr=0.06%, sys=7.02%, ctx=1817, 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=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=180543: Sat Sep 5 12:44:03 2026 read: IOPS=14, BW=225KiB/s (230kB/s)(5744KiB/25578msec) clat (usec): min=49, max=140752, avg=37911.26, stdev=25509.53 lat (usec): min=50, max=140754, avg=37912.45, stdev=25509.54 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 62], 10.00th=[ 13173], 20.00th=[ 19530], | 30.00th=[ 24511], 40.00th=[ 29230], 50.00th=[ 33424], 60.00th=[ 38011], | 70.00th=[ 45876], 80.00th=[ 53216], 90.00th=[ 70779], 95.00th=[ 88605], | 99.00th=[124257], 99.50th=[130548], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 57, max= 444, per=23.82%, avg=222.98, stdev=81.85, samples=50 iops : min= 3, max= 27, avg=13.22, stdev= 5.14, samples=50 write: IOPS=15, BW=256KiB/s (262kB/s)(6544KiB/25578msec); 0 zone resets clat (usec): min=1566, max=142904, avg=29000.90, stdev=28023.90 lat (usec): min=1567, max=142906, avg=29002.98, stdev=28023.85 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2311], 10.00th=[ 3326], 20.00th=[ 5800], | 30.00th=[ 8848], 40.00th=[ 14091], 50.00th=[ 19006], 60.00th=[ 26870], | 70.00th=[ 35914], 80.00th=[ 49546], 90.00th=[ 66847], 95.00th=[ 90702], | 99.00th=[119014], 99.50th=[130548], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 31, max= 621, per=25.80%, avg=254.10, stdev=105.75, samples=50 iops : min= 1, max= 38, avg=15.16, stdev= 6.63, samples=50 lat (usec) : 50=0.26%, 100=3.52%, 250=0.39%, 750=0.13% lat (msec) : 2=1.56%, 4=5.99%, 10=10.68%, 20=14.58%, 50=41.02% lat (msec) : 100=18.49%, 250=3.39% cpu : usr=0.07%, sys=6.88%, ctx=1834, 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=180544: Sat Sep 5 12:44:03 2026 read: IOPS=15, BW=250KiB/s (256kB/s)(6256KiB/25071msec) clat (usec): min=43, max=123091, avg=34869.19, stdev=21594.79 lat (usec): min=43, max=123093, avg=34870.64, stdev=21594.86 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 1172], 20.00th=[ 18482], | 30.00th=[ 23987], 40.00th=[ 28181], 50.00th=[ 32637], 60.00th=[ 38011], | 70.00th=[ 44827], 80.00th=[ 50594], 90.00th=[ 61604], 95.00th=[ 72877], | 99.00th=[ 96994], 99.50th=[104334], 99.90th=[123208], 99.95th=[123208], | 99.99th=[123208] bw ( KiB/s): min= 95, max= 442, per=26.54%, avg=248.39, stdev=83.17, samples=49 iops : min= 5, max= 27, avg=14.82, stdev= 5.25, samples=49 write: IOPS=15, BW=241KiB/s (246kB/s)(6032KiB/25071msec); 0 zone resets clat (usec): min=1498, max=184521, avg=29955.63, stdev=28337.13 lat (usec): min=1500, max=184523, avg=29958.06, stdev=28336.76 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2540], 10.00th=[ 3621], 20.00th=[ 5735], | 30.00th=[ 8979], 40.00th=[ 16909], 50.00th=[ 22414], 60.00th=[ 27657], | 70.00th=[ 38011], 80.00th=[ 50594], 90.00th=[ 68682], 95.00th=[ 89654], | 99.00th=[119014], 99.50th=[145753], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 95, max= 478, per=23.96%, avg=236.00, stdev=93.25, samples=49 iops : min= 5, max= 29, avg=14.02, stdev= 5.87, samples=49 lat (usec) : 50=0.26%, 100=4.04%, 250=0.39%, 500=0.39% lat (msec) : 2=1.56%, 4=4.95%, 10=10.29%, 20=12.89%, 50=43.88% lat (msec) : 100=19.66%, 250=1.69% cpu : usr=0.10%, sys=6.74%, ctx=1812, 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=180545: Sat Sep 5 12:44:03 2026 read: IOPS=15, BW=243KiB/s (249kB/s)(6032KiB/24818msec) clat (usec): min=40, max=135627, avg=35343.29, stdev=21270.66 lat (usec): min=40, max=135627, avg=35346.20, stdev=21273.74 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 64], 10.00th=[ 2868], 20.00th=[ 19006], | 30.00th=[ 23987], 40.00th=[ 28705], 50.00th=[ 33817], 60.00th=[ 39060], | 70.00th=[ 44827], 80.00th=[ 51643], 90.00th=[ 61080], 95.00th=[ 69731], | 99.00th=[101188], 99.50th=[116917], 99.90th=[135267], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 95, max= 443, per=25.84%, avg=241.86, stdev=75.78, samples=49 iops : min= 5, max= 27, avg=14.41, stdev= 4.70, samples=49 write: IOPS=15, BW=252KiB/s (258kB/s)(6256KiB/24818msec); 0 zone resets clat (usec): min=1628, max=165194, avg=28915.93, stdev=28227.52 lat (usec): min=1629, max=165196, avg=28918.63, stdev=28226.84 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2409], 10.00th=[ 3064], 20.00th=[ 5604], | 30.00th=[ 7898], 40.00th=[ 14091], 50.00th=[ 21103], 60.00th=[ 27132], | 70.00th=[ 37487], 80.00th=[ 47973], 90.00th=[ 64750], 95.00th=[ 95945], | 99.00th=[116917], 99.50th=[121111], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 64, max= 476, per=25.67%, avg=252.82, stdev=96.76, samples=49 iops : min= 4, max= 29, avg=15.10, stdev= 6.07, samples=49 lat (usec) : 50=0.26%, 100=3.78%, 250=0.39%, 500=0.26% lat (msec) : 2=1.43%, 4=6.12%, 10=10.42%, 20=13.28%, 50=43.10% lat (msec) : 100=18.49%, 250=2.47% cpu : usr=0.08%, sys=7.11%, ctx=1799, 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=936KiB/s (959kB/s), 225KiB/s-250KiB/s (230kB/s-256kB/s), io=23.4MiB (24.5MB), run=24818-25578msec WRITE: bw=985KiB/s (1009kB/s), 241KiB/s-256KiB/s (246kB/s-262kB/s), io=24.6MiB (25.8MB), run=24818-25578msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180537: Sat Sep 5 12:44:11 2026 read: IOPS=10, BW=175KiB/s (179kB/s)(5920KiB/33898msec) clat (msec): min=5, max=153, avg=33.48, stdev=27.32 lat (msec): min=5, max=153, avg=33.48, stdev=27.32 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 38], 80.00th=[ 48], 90.00th=[ 73], 95.00th=[ 92], | 99.00th=[ 140], 99.50th=[ 148], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 31, max= 512, per=24.73%, avg=173.82, stdev=112.82, samples=67 iops : min= 1, max= 32, avg=10.10, stdev= 7.15, samples=67 write: IOPS=11, BW=188KiB/s (192kB/s)(6368KiB/33898msec); 0 zone resets clat (msec): min=12, max=228, avg=53.75, stdev=36.34 lat (msec): min=12, max=228, avg=53.76, stdev=36.34 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 36], 50.00th=[ 41], 60.00th=[ 52], | 70.00th=[ 64], 80.00th=[ 79], 90.00th=[ 100], 95.00th=[ 133], | 99.00th=[ 184], 99.50th=[ 197], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 31, max= 542, per=25.35%, avg=187.33, stdev=112.16, samples=67 iops : min= 1, max= 33, avg=10.94, stdev= 7.09, samples=67 lat (msec) : 10=3.52%, 20=20.96%, 50=44.53%, 100=24.48%, 250=6.51% cpu : usr=0.05%, sys=2.36%, ctx=1230, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180539: Sat Sep 5 12:44:11 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(5744KiB/34068msec) clat (msec): min=5, max=209, avg=34.56, stdev=31.65 lat (msec): min=5, max=209, avg=34.56, stdev=31.65 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 27], | 70.00th=[ 36], 80.00th=[ 47], 90.00th=[ 78], 95.00th=[ 103], | 99.00th=[ 157], 99.50th=[ 174], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 31, max= 510, per=24.04%, avg=168.97, stdev=113.40, samples=66 iops : min= 1, max= 31, avg= 9.80, stdev= 7.15, samples=66 write: IOPS=12, BW=192KiB/s (197kB/s)(6544KiB/34068msec); 0 zone resets clat (msec): min=13, max=242, avg=52.59, stdev=36.24 lat (msec): min=13, max=242, avg=52.59, stdev=36.24 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 48], | 70.00th=[ 62], 80.00th=[ 78], 90.00th=[ 104], 95.00th=[ 128], | 99.00th=[ 176], 99.50th=[ 197], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 31, max= 539, per=25.72%, avg=190.06, stdev=115.33, samples=67 iops : min= 1, max= 33, avg=11.12, stdev= 7.29, samples=67 lat (msec) : 10=3.39%, 20=19.92%, 50=48.31%, 100=20.31%, 250=8.07% cpu : usr=0.07%, sys=2.25%, ctx=1245, 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=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=180540: Sat Sep 5 12:44:11 2026 read: IOPS=11, BW=185KiB/s (190kB/s)(6256KiB/33744msec) clat (msec): min=5, max=158, avg=34.84, stdev=30.57 lat (msec): min=5, max=158, avg=34.84, stdev=30.57 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 52], 90.00th=[ 81], 95.00th=[ 105], | 99.00th=[ 138], 99.50th=[ 148], 99.90th=[ 159], 99.95th=[ 159], | 99.99th=[ 159] bw ( KiB/s): min= 31, max= 608, per=26.16%, avg=183.89, stdev=132.23, samples=66 iops : min= 1, max= 38, avg=10.73, stdev= 8.40, samples=66 write: IOPS=11, BW=179KiB/s (183kB/s)(6032KiB/33744msec); 0 zone resets clat (msec): min=9, max=223, avg=53.21, stdev=37.97 lat (msec): min=9, max=223, avg=53.21, stdev=37.97 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 50], | 70.00th=[ 62], 80.00th=[ 82], 90.00th=[ 106], 95.00th=[ 138], | 99.00th=[ 171], 99.50th=[ 213], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 574, per=23.65%, avg=174.74, stdev=109.69, samples=66 iops : min= 1, max= 35, avg=10.15, stdev= 6.92, samples=66 lat (msec) : 10=4.69%, 20=22.40%, 50=43.10%, 100=20.70%, 250=9.11% cpu : usr=0.07%, sys=2.25%, ctx=1208, 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=180541: Sat Sep 5 12:44:11 2026 read: IOPS=11, BW=180KiB/s (184kB/s)(6032KiB/33532msec) clat (msec): min=6, max=206, avg=35.49, stdev=30.00 lat (msec): min=6, max=206, avg=35.49, stdev=30.00 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 41], 80.00th=[ 52], 90.00th=[ 77], 95.00th=[ 102], | 99.00th=[ 150], 99.50th=[ 159], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 31, max= 571, per=25.67%, avg=180.45, stdev=118.37, samples=65 iops : min= 1, max= 35, avg=10.52, stdev= 7.46, samples=65 write: IOPS=11, BW=187KiB/s (191kB/s)(6256KiB/33532msec); 0 zone resets clat (msec): min=10, max=228, avg=51.25, stdev=35.80 lat (msec): min=10, max=228, avg=51.25, stdev=35.80 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 40], 60.00th=[ 48], | 70.00th=[ 59], 80.00th=[ 77], 90.00th=[ 103], 95.00th=[ 123], | 99.00th=[ 161], 99.50th=[ 224], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 31, max= 508, per=25.09%, avg=185.39, stdev=117.75, samples=66 iops : min= 1, max= 31, avg=10.82, stdev= 7.43, samples=66 lat (msec) : 10=4.04%, 20=19.14%, 50=47.40%, 100=21.35%, 250=8.07% cpu : usr=0.05%, sys=2.36%, ctx=1223, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=703KiB/s (720kB/s), 169KiB/s-185KiB/s (173kB/s-190kB/s), io=23.4MiB (24.5MB), run=33532-34068msec WRITE: bw=740KiB/s (757kB/s), 179KiB/s-192KiB/s (183kB/s-197kB/s), io=24.6MiB (25.8MB), run=33532-34068msec 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=180561: Sat Sep 5 12:44:26 2026 read: IOPS=1, BW=1229KiB/s (1258kB/s)(7168KiB/5834msec) clat (usec): min=623, max=2793.2k, avg=612232.83, stdev=978637.49 lat (usec): min=624, max=2793.2k, avg=612234.07, stdev=978637.89 clat percentiles (usec): | 1.00th=[ 627], 5.00th=[ 627], 10.00th=[ 627], | 20.00th=[ 113771], 30.00th=[ 122160], 40.00th=[ 122160], | 50.00th=[ 320865], 60.00th=[ 459277], 70.00th=[ 459277], | 80.00th=[ 476054], 90.00th=[2801796], 95.00th=[2801796], | 99.00th=[2801796], 99.50th=[2801796], 99.90th=[2801796], | 99.95th=[2801796], 99.99th=[2801796] bw ( KiB/s): min= 1703, max= 6107, per=100.00%, avg=3916.00, stdev=2202.08, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=0, BW=878KiB/s (899kB/s)(5120KiB/5834msec); 0 zone resets clat (msec): min=64, max=482, avg=302.18, stdev=167.02 lat (msec): min=64, max=483, avg=302.44, stdev=167.15 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 65], | 30.00th=[ 253], 40.00th=[ 253], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 443], 80.00th=[ 443], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 2000, max= 3407, per=61.11%, avg=2483.33, stdev=800.21, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=16.67%, 500=58.33%, >=2000=8.33% cpu : usr=0.00%, sys=11.33%, ctx=741, 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=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=180562: Sat Sep 5 12:44:26 2026 read: IOPS=0, BW=290KiB/s (297kB/s)(2048KiB/7055msec) clat (usec): min=558, max=208308, avg=104433.13, stdev=146901.41 lat (usec): min=559, max=208310, avg=104434.83, stdev=146902.52 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[ 562], 50.00th=[ 562], 60.00th=[208667], | 70.00th=[208667], 80.00th=[208667], 90.00th=[208667], 95.00th=[208667], | 99.00th=[208667], 99.50th=[208667], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 1418, max= 2043, per=59.63%, avg=1730.50, stdev=441.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1451KiB/s (1486kB/s)(10.0MiB/7055msec); 0 zone resets clat (msec): min=170, max=2870, avg=658.36, stdev=793.50 lat (msec): min=170, max=2870, avg=658.74, stdev=793.56 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 271], | 30.00th=[ 300], 40.00th=[ 342], 50.00th=[ 393], 60.00th=[ 405], | 70.00th=[ 523], 80.00th=[ 634], 90.00th=[ 676], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 1703, max= 4096, per=62.31%, avg=2532.14, stdev=1000.37, samples=7 iops : min= 1, max= 4, avg= 1.71, stdev= 1.25, samples=7 lat (usec) : 750=8.33% lat (msec) : 250=16.67%, 500=41.67%, 750=25.00%, >=2000=8.33% cpu : usr=0.01%, sys=10.63%, ctx=200, 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=180563: Sat Sep 5 12:44:26 2026 read: IOPS=1, BW=1076KiB/s (1101kB/s)(6144KiB/5712msec) clat (usec): min=454, max=197907, avg=71207.79, stdev=85664.85 lat (usec): min=455, max=197908, avg=71208.82, stdev=85664.90 clat percentiles (usec): | 1.00th=[ 453], 5.00th=[ 453], 10.00th=[ 453], 20.00th=[ 996], | 30.00th=[ 996], 40.00th=[ 2737], 50.00th=[ 2737], 60.00th=[ 76022], | 70.00th=[147850], 80.00th=[147850], 90.00th=[198181], 95.00th=[198181], | 99.00th=[198181], 99.50th=[198181], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 1969, max= 3407, per=85.22%, avg=2473.00, stdev=809.71, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1076KiB/s (1101kB/s)(6144KiB/5712msec); 0 zone resets clat (msec): min=57, max=3760, avg=838.87, stdev=1439.46 lat (msec): min=58, max=3760, avg=838.94, stdev=1439.47 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 132], | 30.00th=[ 132], 40.00th=[ 215], 50.00th=[ 215], 60.00th=[ 430], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 3775], 95.00th=[ 3775], | 99.00th=[ 3775], 99.50th=[ 3775], 99.90th=[ 3775], 99.95th=[ 3775], | 99.99th=[ 3775] bw ( KiB/s): min= 1703, max= 2868, per=53.64%, avg=2180.00, stdev=610.49, 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%, 100=16.67%, 250=33.33%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=6.86%, ctx=148, 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=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=180564: Sat Sep 5 12:44:26 2026 read: IOPS=0, BW=877KiB/s (898kB/s)(5120KiB/5836msec) clat (usec): min=1678, max=274329, avg=94574.69, stdev=128766.96 lat (usec): min=1679, max=274330, avg=94575.77, stdev=128767.21 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1680], 10.00th=[ 1680], 20.00th=[ 1680], | 30.00th=[ 1909], 40.00th=[ 1909], 50.00th=[ 5866], 60.00th=[ 5866], | 70.00th=[189793], 80.00th=[189793], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 6815, max= 6815, per=100.00%, avg=6815.00, stdev= 0.00, samples=1 iops : min= 6, max= 6, avg= 6.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1228KiB/s (1258kB/s)(7168KiB/5836msec); 0 zone resets clat (msec): min=79, max=3606, avg=737.88, stdev=1275.10 lat (msec): min=96, max=3607, avg=740.74, stdev=1273.47 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 118], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 249], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 510], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 1460, max= 4087, per=61.65%, avg=2505.33, stdev=1393.21, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=16.67%, 10=8.33%, 100=8.33%, 250=33.33%, 500=16.67% lat (msec) : 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.47%, ctx=140, 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=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=2903KiB/s (2973kB/s), 290KiB/s-1229KiB/s (297kB/s-1258kB/s), io=20.0MiB (20.0MB), run=5712-7055msec WRITE: bw=4064KiB/s (4162kB/s), 878KiB/s-1451KiB/s (899kB/s-1486kB/s), io=28.0MiB (29.4MB), run=5712-7055msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180557: Sat Sep 5 12:44:27 2026 read: IOPS=0, BW=955KiB/s (978kB/s)(7168KiB/7506msec) clat (msec): min=69, max=2841, avg=812.45, stdev=1134.05 lat (msec): min=69, max=2841, avg=812.45, stdev=1134.05 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 80], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 97], 60.00th=[ 527], | 70.00th=[ 527], 80.00th=[ 1989], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 2015, max= 4047, per=100.00%, avg=3336.00, stdev=1145.13, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=682KiB/s (698kB/s)(5120KiB/7506msec); 0 zone resets clat (msec): min=147, max=683, avg=330.43, stdev=207.75 lat (msec): min=147, max=683, avg=330.51, stdev=207.76 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 249], 60.00th=[ 249], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 2023, max= 4071, per=70.92%, avg=2708.33, stdev=1180.11, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=33.33%, 250=25.00%, 500=8.33%, 750=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.02%, ctx=96, 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=180558: Sat Sep 5 12:44:27 2026 read: IOPS=0, BW=298KiB/s (305kB/s)(2048KiB/6873msec) clat (msec): min=92, max=206, avg=149.62, stdev=80.82 lat (msec): min=92, max=206, avg=149.62, stdev=80.82 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 93], 40.00th=[ 93], 50.00th=[ 93], 60.00th=[ 207], | 70.00th=[ 207], 80.00th=[ 207], 90.00th=[ 207], 95.00th=[ 207], | 99.00th=[ 207], 99.50th=[ 207], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 2011, max= 2023, per=73.94%, avg=2017.00, stdev= 8.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1490KiB/s (1526kB/s)(10.0MiB/6873msec); 0 zone resets clat (msec): min=132, max=2997, avg=648.38, stdev=904.58 lat (msec): min=132, max=2997, avg=648.46, stdev=904.59 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 136], | 30.00th=[ 150], 40.00th=[ 234], 50.00th=[ 271], 60.00th=[ 275], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 1385], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 2019, max= 5111, per=90.41%, avg=3452.60, stdev=1376.15, samples=5 iops : min= 1, max= 4, avg= 2.40, stdev= 1.34, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=3.01%, 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=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=180559: Sat Sep 5 12:44:27 2026 read: IOPS=0, BW=896KiB/s (917kB/s)(6144KiB/6860msec) clat (msec): min=151, max=564, avg=349.92, stdev=165.27 lat (msec): min=151, max=564, avg=349.93, stdev=165.27 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 380], | 70.00th=[ 502], 80.00th=[ 502], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1973, max= 3407, per=86.38%, avg=2356.50, stdev=700.73, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=896KiB/s (917kB/s)(6144KiB/6860msec); 0 zone resets clat (msec): min=117, max=3379, avg=787.54, stdev=1289.31 lat (msec): min=117, max=3379, avg=787.68, stdev=1289.29 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 126], | 30.00th=[ 126], 40.00th=[ 178], 50.00th=[ 178], 60.00th=[ 218], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 3373], 95.00th=[ 3373], | 99.00th=[ 3373], 99.50th=[ 3373], 99.90th=[ 3373], 99.95th=[ 3373], | 99.99th=[ 3373] bw ( KiB/s): min= 1703, max= 3886, per=60.97%, avg=2328.60, stdev=881.31, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=50.00%, 500=16.67%, 750=25.00%, >=2000=8.33% cpu : usr=0.03%, sys=2.97%, ctx=59, 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=180560: Sat Sep 5 12:44:27 2026 read: IOPS=0, BW=781KiB/s (800kB/s)(5120KiB/6554msec) clat (msec): min=86, max=595, avg=310.93, stdev=241.52 lat (msec): min=86, max=595, avg=310.93, stdev=241.52 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 87], | 30.00th=[ 132], 40.00th=[ 132], 50.00th=[ 194], 60.00th=[ 194], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 3968, max= 4063, per=100.00%, avg=4015.50, stdev=67.18, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1094KiB/s (1120kB/s)(7168KiB/6554msec); 0 zone resets clat (msec): min=80, max=3005, avg=707.61, stdev=1030.06 lat (msec): min=80, max=3005, avg=707.70, stdev=1030.05 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 100], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 363], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 575], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 1391, max= 4063, per=58.34%, avg=2228.00, stdev=1052.36, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=25.00%, 250=16.67%, 500=25.00%, 750=25.00%, >=2000=8.33% cpu : usr=0.03%, sys=3.20%, ctx=83, 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=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=2728KiB/s (2794kB/s), 298KiB/s-955KiB/s (305kB/s-978kB/s), io=20.0MiB (20.0MB), run=6554-7506msec WRITE: bw=3820KiB/s (3912kB/s), 682KiB/s-1490KiB/s (698kB/s-1526kB/s), io=28.0MiB (29.4MB), run=6554-7506msec 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=180573: Sat Sep 5 12:44:39 2026 read: IOPS=1, BW=5535KiB/s (5668kB/s)(12.0MiB/2220msec) clat (msec): min=561, max=887, avg=706.79, stdev=165.90 lat (msec): min=561, max=887, avg=706.79, stdev=165.90 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] 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) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=18.70%, ctx=328, 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=180575: Sat Sep 5 12:44:39 2026 read: IOPS=0, BW=1520KiB/s (1557kB/s)(4096KiB/2694msec) clat (nsec): min=854050k, max=854050k, avg=854050073.00, stdev= 0.00 lat (nsec): min=854053k, max=854053k, avg=854052584.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] 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=3041KiB/s (3114kB/s)(8192KiB/2694msec); 0 zone resets clat (msec): min=396, max=1316, avg=856.45, stdev=650.50 lat (msec): min=396, max=1316, avg=856.76, stdev=650.50 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 1318], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8126, max= 8126, per=66.81%, avg=8126.00, 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=0.04%, sys=8.13%, ctx=135, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180577: Sat Sep 5 12:44:39 2026 write: IOPS=1, BW=7267KiB/s (7441kB/s)(12.0MiB/1691msec); 0 zone resets clat (msec): min=239, max=793, avg=549.35, stdev=283.02 lat (msec): min=239, max=794, avg=549.91, stdev=283.32 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min=16157, max=16157, per=100.00%, avg=16157.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=7.16%, ctx=57, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180579: Sat Sep 5 12:44:39 2026 write: IOPS=1, BW=6896KiB/s (7061kB/s)(12.0MiB/1782msec); 0 zone resets clat (msec): min=456, max=629, avg=559.75, stdev=90.91 lat (msec): min=457, max=629, avg=560.03, stdev=91.04 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 5497, max= 8192, per=56.27%, avg=6844.50, stdev=1905.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=6.18%, ctx=54, 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=6082KiB/s (6228kB/s), 1520KiB/s-5535KiB/s (1557kB/s-5668kB/s), io=16.0MiB (16.8MB), run=2220-2694msec WRITE: bw=11.9MiB/s (12.5MB/s), 3041KiB/s-7267KiB/s (3114kB/s-7441kB/s), io=32.0MiB (33.6MB), run=1691-2694msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180574: Sat Sep 5 12:44:39 2026 read: IOPS=1, BW=4676KiB/s (4788kB/s)(12.0MiB/2628msec) clat (msec): min=453, max=1096, avg=805.52, stdev=325.83 lat (msec): min=453, max=1096, avg=805.52, stdev=325.83 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.60%, ctx=61, 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=180576: Sat Sep 5 12:44:39 2026 read: IOPS=0, BW=1469KiB/s (1504kB/s)(4096KiB/2789msec) clat (nsec): min=898767k, max=898767k, avg=898766767.00, stdev= 0.00 lat (nsec): min=898769k, max=898769k, avg=898768927.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 902], 5.00th=[ 902], 10.00th=[ 902], 20.00th=[ 902], | 30.00th=[ 902], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2937KiB/s (3008kB/s)(8192KiB/2789msec); 0 zone resets clat (msec): min=338, max=1474, avg=906.58, stdev=803.52 lat (msec): min=338, max=1475, avg=906.84, stdev=803.58 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 1469], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8159, max= 8159, per=71.04%, 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=0.00%, sys=4.59%, ctx=42, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180578: Sat Sep 5 12:44:39 2026 write: IOPS=1, BW=4307KiB/s (4410kB/s)(12.0MiB/2853msec); 0 zone resets clat (msec): min=476, max=1346, avg=878.39, stdev=438.83 lat (msec): min=476, max=1346, avg=878.72, stdev=438.88 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 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= 8159, per=70.90%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.61%, ctx=68, 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=180580: Sat Sep 5 12:44:39 2026 write: IOPS=1, BW=6203KiB/s (6352kB/s)(12.0MiB/1981msec); 0 zone resets clat (msec): min=242, max=1095, avg=585.91, stdev=450.05 lat (msec): min=242, max=1095, avg=586.35, stdev=450.18 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8126, max= 8126, per=70.75%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=9.14%, ctx=76, 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=5875KiB/s (6015kB/s), 1469KiB/s-4676KiB/s (1504kB/s-4788kB/s), io=16.0MiB (16.8MB), run=2628-2789msec WRITE: bw=11.2MiB/s (11.8MB/s), 2937KiB/s-6203KiB/s (3008kB/s-6352kB/s), io=32.0MiB (33.6MB), run=1981-2853msec