== sanity test 398b: DIO and buffer IO race ============== 20:31:09 (1787790669) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.15274 s, 9.8 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179503: Wed Aug 26 20:33:04 2026 read: IOPS=15, BW=61.5KiB/s (63.0kB/s)(5992KiB/97366msec) clat (usec): min=34, max=700277, avg=36483.31, stdev=28617.38 lat (usec): min=34, max=700280, avg=36493.39, stdev=28614.40 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 10814], 10.00th=[ 14746], 20.00th=[ 19006], | 30.00th=[ 22938], 40.00th=[ 26870], 50.00th=[ 31589], 60.00th=[ 35914], | 70.00th=[ 42730], 80.00th=[ 50594], 90.00th=[ 62653], 95.00th=[ 76022], | 99.00th=[114820], 99.50th=[145753], 99.90th=[250610], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 7, max= 119, per=25.42%, avg=61.27, stdev=21.79, samples=192 iops : min= 1, max= 29, avg=14.69, stdev= 5.47, samples=192 write: IOPS=16, BW=64.7KiB/s (66.2kB/s)(6296KiB/97366msec); 0 zone resets clat (usec): min=1036, max=183786, avg=26863.40, stdev=27743.79 lat (usec): min=1037, max=183787, avg=26865.26, stdev=27744.22 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1418], 10.00th=[ 1926], 20.00th=[ 3228], | 30.00th=[ 5342], 40.00th=[ 11731], 50.00th=[ 20055], 60.00th=[ 26346], | 70.00th=[ 33817], 80.00th=[ 44827], 90.00th=[ 65274], 95.00th=[ 80217], | 99.00th=[125305], 99.50th=[141558], 99.90th=[166724], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 7, max= 143, per=25.67%, avg=64.70, stdev=25.63, samples=191 iops : min= 1, max= 35, avg=15.54, stdev= 6.42, samples=191 lat (usec) : 50=0.13%, 100=1.11%, 250=0.23%, 500=0.03%, 1000=0.03% lat (msec) : 2=5.53%, 4=7.13%, 10=7.45%, 20=15.17%, 50=44.08% lat (msec) : 100=17.02%, 250=2.05%, 750=0.03% cpu : usr=0.09%, sys=6.68%, ctx=6858, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179504: Wed Aug 26 20:33:04 2026 read: IOPS=15, BW=60.6KiB/s (62.0kB/s)(5940KiB/98096msec) clat (usec): min=44, max=163341, avg=35601.74, stdev=21151.73 lat (usec): min=44, max=163342, avg=35604.29, stdev=21152.59 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 11338], 10.00th=[ 15270], 20.00th=[ 19268], | 30.00th=[ 22938], 40.00th=[ 26346], 50.00th=[ 31327], 60.00th=[ 36439], | 70.00th=[ 42730], 80.00th=[ 50070], 90.00th=[ 62129], 95.00th=[ 73925], | 99.00th=[109577], 99.50th=[124257], 99.90th=[156238], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 6, max= 120, per=24.85%, avg=59.89, stdev=21.70, samples=194 iops : min= 1, max= 30, avg=14.34, stdev= 5.45, samples=194 write: IOPS=16, BW=64.7KiB/s (66.3kB/s)(6348KiB/98096msec); 0 zone resets clat (usec): min=993, max=639098, avg=28274.07, stdev=32657.10 lat (usec): min=994, max=639100, avg=28285.36, stdev=32654.51 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1352], 10.00th=[ 1942], 20.00th=[ 3589], | 30.00th=[ 5866], 40.00th=[ 12518], 50.00th=[ 20579], 60.00th=[ 26870], | 70.00th=[ 35914], 80.00th=[ 49546], 90.00th=[ 65799], 95.00th=[ 82314], | 99.00th=[135267], 99.50th=[154141], 99.90th=[221250], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 6, max= 175, per=25.35%, avg=63.87, stdev=25.03, samples=194 iops : min= 1, max= 43, avg=15.34, stdev= 6.24, samples=194 lat (usec) : 50=0.07%, 100=1.17%, 250=0.23%, 500=0.10%, 1000=0.03% lat (msec) : 2=5.50%, 4=6.05%, 10=7.94%, 20=14.68%, 50=44.53% lat (msec) : 100=17.74%, 250=1.92%, 750=0.03% cpu : usr=0.09%, sys=6.61%, ctx=6936, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179505: Wed Aug 26 20:33:04 2026 read: IOPS=15, BW=60.5KiB/s (61.0kB/s)(6028KiB/99564msec) clat (usec): min=35, max=166020, avg=35209.52, stdev=22883.58 lat (usec): min=35, max=166021, avg=35210.83, stdev=22883.64 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 7832], 10.00th=[ 13829], 20.00th=[ 17957], | 30.00th=[ 21890], 40.00th=[ 26084], 50.00th=[ 30278], 60.00th=[ 35914], | 70.00th=[ 42206], 80.00th=[ 50070], 90.00th=[ 64226], 95.00th=[ 74974], | 99.00th=[113771], 99.50th=[139461], 99.90th=[160433], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 15, max= 127, per=25.00%, avg=60.25, stdev=22.04, samples=196 iops : min= 3, max= 31, avg=14.43, stdev= 5.52, samples=196 write: IOPS=15, BW=62.9KiB/s (64.4kB/s)(6260KiB/99564msec); 0 zone resets clat (usec): min=987, max=642895, avg=29491.85, stdev=32506.70 lat (usec): min=988, max=642897, avg=29493.88, stdev=32506.50 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1369], 10.00th=[ 1909], 20.00th=[ 3720], | 30.00th=[ 6521], 40.00th=[ 14615], 50.00th=[ 21890], 60.00th=[ 28967], | 70.00th=[ 38536], 80.00th=[ 52167], 90.00th=[ 68682], 95.00th=[ 85459], | 99.00th=[126354], 99.50th=[152044], 99.90th=[179307], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 6, max= 135, per=24.63%, avg=62.07, stdev=24.40, samples=197 iops : min= 1, max= 33, avg=14.89, stdev= 6.12, samples=197 lat (usec) : 50=0.33%, 100=1.79%, 250=0.16%, 1000=0.03% lat (msec) : 2=5.37%, 4=5.53%, 10=7.65%, 20=15.56%, 50=42.90% lat (msec) : 100=18.49%, 250=2.15%, 750=0.03% cpu : usr=0.10%, sys=6.37%, ctx=6901, 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=179506: Wed Aug 26 20:33:04 2026 read: IOPS=15, BW=61.6KiB/s (63.1kB/s)(6052KiB/98185msec) clat (usec): min=33, max=191666, avg=35265.88, stdev=23525.03 lat (usec): min=33, max=191667, avg=35267.41, stdev=23525.11 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 396], 10.00th=[ 13566], 20.00th=[ 17433], | 30.00th=[ 21627], 40.00th=[ 25560], 50.00th=[ 30278], 60.00th=[ 35390], | 70.00th=[ 42206], 80.00th=[ 50070], 90.00th=[ 64750], 95.00th=[ 78119], | 99.00th=[117965], 99.50th=[141558], 99.90th=[173016], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 7, max= 143, per=25.48%, avg=61.41, stdev=22.07, samples=192 iops : min= 1, max= 35, avg=14.72, stdev= 5.52, samples=192 write: IOPS=15, BW=63.5KiB/s (65.0kB/s)(6236KiB/98185msec); 0 zone resets clat (usec): min=1034, max=653047, avg=28520.41, stdev=32399.68 lat (usec): min=1035, max=653052, avg=28523.60, stdev=32400.41 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1319], 10.00th=[ 1926], 20.00th=[ 3326], | 30.00th=[ 6259], 40.00th=[ 13698], 50.00th=[ 20841], 60.00th=[ 27657], | 70.00th=[ 35914], 80.00th=[ 49546], 90.00th=[ 66847], 95.00th=[ 82314], | 99.00th=[123208], 99.50th=[139461], 99.90th=[208667], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 7, max= 143, per=25.04%, avg=63.10, stdev=24.37, samples=193 iops : min= 1, max= 35, avg=15.15, stdev= 6.10, samples=193 lat (usec) : 50=0.39%, 100=1.79%, 250=0.23%, 500=0.10% lat (msec) : 2=5.50%, 4=6.22%, 10=6.80%, 20=16.47%, 50=42.81% lat (msec) : 100=17.51%, 250=2.15%, 750=0.03% cpu : usr=0.09%, sys=6.62%, ctx=6949, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=241KiB/s (247kB/s), 60.5KiB/s-61.6KiB/s (61.0kB/s-63.1kB/s), io=23.4MiB (24.6MB), run=97366-99564msec WRITE: bw=253KiB/s (259kB/s), 62.9KiB/s-64.7KiB/s (64.4kB/s-66.3kB/s), io=24.6MiB (25.7MB), run=97366-99564msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179498: Wed Aug 26 20:33:36 2026 read: IOPS=11, BW=45.6KiB/s (46.7kB/s)(5992KiB/131398msec) clat (msec): min=5, max=739, avg=34.23, stdev=35.13 lat (msec): min=5, max=739, avg=34.24, stdev=35.13 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 51], 90.00th=[ 75], 95.00th=[ 99], | 99.00th=[ 153], 99.50th=[ 182], 99.90th=[ 220], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 175, per=25.06%, avg=45.61, stdev=30.21, samples=257 iops : min= 1, max= 43, avg=10.78, stdev= 7.56, samples=257 write: IOPS=11, BW=47.9KiB/s (49.1kB/s)(6296KiB/131398msec); 0 zone resets clat (msec): min=9, max=252, avg=50.61, stdev=35.06 lat (msec): min=9, max=252, avg=50.61, stdev=35.06 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 58], 80.00th=[ 73], 90.00th=[ 100], 95.00th=[ 120], | 99.00th=[ 180], 99.50th=[ 205], 99.90th=[ 247], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 7, max= 151, per=25.03%, avg=47.56, stdev=28.41, samples=259 iops : min= 1, max= 37, avg=11.26, stdev= 7.12, samples=259 lat (msec) : 10=3.74%, 20=22.04%, 50=45.70%, 100=21.35%, 250=7.10% lat (msec) : 500=0.03%, 750=0.03% cpu : usr=0.07%, sys=2.32%, ctx=4874, 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=179499: Wed Aug 26 20:33:36 2026 read: IOPS=11, BW=45.2KiB/s (46.3kB/s)(5940KiB/131448msec) clat (msec): min=5, max=650, avg=34.02, stdev=34.10 lat (msec): min=5, max=650, avg=34.02, stdev=34.10 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=[ 28], | 70.00th=[ 35], 80.00th=[ 50], 90.00th=[ 77], 95.00th=[ 100], | 99.00th=[ 150], 99.50th=[ 169], 99.90th=[ 275], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 7, max= 167, per=25.13%, avg=45.74, stdev=29.72, samples=254 iops : min= 1, max= 41, avg=10.81, stdev= 7.45, samples=254 write: IOPS=12, BW=48.3KiB/s (49.5kB/s)(6348KiB/131448msec); 0 zone resets clat (msec): min=8, max=235, avg=50.71, stdev=34.22 lat (msec): min=8, max=235, avg=50.71, stdev=34.22 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 40], 60.00th=[ 48], | 70.00th=[ 59], 80.00th=[ 74], 90.00th=[ 99], 95.00th=[ 117], | 99.00th=[ 188], 99.50th=[ 207], 99.90th=[ 234], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 7, max= 119, per=25.19%, avg=47.85, stdev=28.16, samples=259 iops : min= 1, max= 29, avg=11.34, stdev= 7.07, samples=259 lat (msec) : 10=4.46%, 20=20.93%, 50=46.03%, 100=21.68%, 250=6.84% lat (msec) : 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=2.28%, ctx=4844, 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=179500: Wed Aug 26 20:33:36 2026 read: IOPS=11, BW=46.0KiB/s (47.1kB/s)(6028KiB/130995msec) clat (msec): min=5, max=225, avg=34.40, stdev=30.58 lat (msec): min=5, max=225, avg=34.40, stdev=30.58 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 51], 90.00th=[ 79], 95.00th=[ 105], | 99.00th=[ 144], 99.50th=[ 161], 99.90th=[ 215], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 7, max= 134, per=25.28%, avg=46.01, stdev=27.72, samples=256 iops : min= 1, max= 33, avg=10.88, stdev= 6.94, samples=256 write: IOPS=11, BW=47.8KiB/s (48.9kB/s)(6260KiB/130995msec); 0 zone resets clat (msec): min=10, max=670, avg=50.28, stdev=36.46 lat (msec): min=10, max=670, avg=50.28, stdev=36.46 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 47], | 70.00th=[ 57], 80.00th=[ 73], 90.00th=[ 92], 95.00th=[ 115], | 99.00th=[ 180], 99.50th=[ 194], 99.90th=[ 268], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 135, per=25.05%, avg=47.60, stdev=27.77, samples=257 iops : min= 1, max= 33, avg=11.28, stdev= 6.96, samples=257 lat (msec) : 10=4.04%, 20=20.08%, 50=47.36%, 100=21.88%, 250=6.58% lat (msec) : 500=0.03%, 750=0.03% cpu : usr=0.07%, sys=2.30%, ctx=4858, 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=179501: Wed Aug 26 20:33:36 2026 read: IOPS=11, BW=45.9KiB/s (47.0kB/s)(6052KiB/131758msec) clat (msec): min=5, max=277, avg=33.89, stdev=31.29 lat (msec): min=5, max=277, avg=33.89, stdev=31.29 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 49], 90.00th=[ 74], 95.00th=[ 95], | 99.00th=[ 157], 99.50th=[ 184], 99.90th=[ 241], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 7, max= 135, per=25.30%, avg=46.04, stdev=29.02, samples=255 iops : min= 1, max= 33, avg=10.88, stdev= 7.29, samples=255 write: IOPS=11, BW=47.3KiB/s (48.5kB/s)(6236KiB/131758msec); 0 zone resets clat (msec): min=8, max=674, avg=51.35, stdev=37.98 lat (msec): min=8, max=674, avg=51.36, stdev=37.98 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 48], | 70.00th=[ 59], 80.00th=[ 75], 90.00th=[ 99], 95.00th=[ 117], | 99.00th=[ 178], 99.50th=[ 201], 99.90th=[ 271], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 135, per=24.82%, avg=47.16, stdev=27.43, samples=257 iops : min= 1, max= 33, avg=11.16, stdev= 6.87, samples=257 lat (msec) : 10=4.07%, 20=20.96%, 50=46.84%, 100=21.29%, 250=6.74% lat (msec) : 500=0.07%, 750=0.03% cpu : usr=0.07%, sys=2.27%, ctx=4977, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=182KiB/s (187kB/s), 45.2KiB/s-46.0KiB/s (46.3kB/s-47.1kB/s), io=23.4MiB (24.6MB), run=130995-131758msec WRITE: bw=191KiB/s (195kB/s), 47.3KiB/s-48.3KiB/s (48.5kB/s-49.5kB/s), io=24.6MiB (25.7MB), run=130995-131758msec 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=179554: Wed Aug 26 20:34:12 2026 read: IOPS=14, BW=227KiB/s (232kB/s)(5920KiB/26100msec) clat (usec): min=47, max=172611, avg=37018.22, stdev=24174.48 lat (usec): min=48, max=172613, avg=37019.54, stdev=24174.50 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 90], 10.00th=[ 15139], 20.00th=[ 20317], | 30.00th=[ 24511], 40.00th=[ 27919], 50.00th=[ 32637], 60.00th=[ 38536], | 70.00th=[ 43779], 80.00th=[ 49546], 90.00th=[ 63701], 95.00th=[ 79168], | 99.00th=[137364], 99.50th=[147850], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 63, max= 480, per=25.42%, avg=225.76, stdev=87.78, samples=51 iops : min= 3, max= 30, avg=13.43, stdev= 5.56, samples=51 write: IOPS=15, BW=244KiB/s (250kB/s)(6368KiB/26100msec); 0 zone resets clat (usec): min=1348, max=167496, avg=30865.47, stdev=28948.96 lat (usec): min=1349, max=167499, avg=30867.73, stdev=28948.85 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 2278], 10.00th=[ 3064], 20.00th=[ 5342], | 30.00th=[ 8586], 40.00th=[ 14746], 50.00th=[ 22152], 60.00th=[ 31851], | 70.00th=[ 40633], 80.00th=[ 52691], 90.00th=[ 72877], 95.00th=[ 86508], | 99.00th=[113771], 99.50th=[164627], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 63, max= 473, per=26.15%, avg=244.47, stdev=80.49, samples=51 iops : min= 3, max= 29, avg=14.61, stdev= 5.15, samples=51 lat (usec) : 50=0.39%, 100=2.34%, 250=0.26%, 500=0.13% lat (msec) : 2=1.69%, 4=5.73%, 10=10.68%, 20=12.37%, 50=45.57% lat (msec) : 100=18.36%, 250=2.47% cpu : usr=0.09%, sys=7.58%, ctx=1886, 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=179555: Wed Aug 26 20:34:12 2026 read: IOPS=13, BW=221KiB/s (226kB/s)(5744KiB/25979msec) clat (usec): min=52, max=166193, avg=36579.78, stdev=21778.95 lat (usec): min=53, max=166194, avg=36585.31, stdev=21772.49 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 88], 10.00th=[ 14746], 20.00th=[ 20841], | 30.00th=[ 25560], 40.00th=[ 29492], 50.00th=[ 34341], 60.00th=[ 39584], | 70.00th=[ 44827], 80.00th=[ 51119], 90.00th=[ 61080], 95.00th=[ 71828], | 99.00th=[108528], 99.50th=[133694], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 56, max= 416, per=24.88%, avg=220.94, stdev=71.90, samples=51 iops : min= 3, max= 26, avg=13.14, stdev= 4.49, samples=51 write: IOPS=15, BW=252KiB/s (258kB/s)(6544KiB/25979msec); 0 zone resets clat (usec): min=1611, max=134999, avg=30887.18, stdev=27708.72 lat (usec): min=1612, max=135003, avg=30889.61, stdev=27708.87 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2835], 10.00th=[ 3851], 20.00th=[ 5604], | 30.00th=[ 9110], 40.00th=[ 16909], 50.00th=[ 23462], 60.00th=[ 31065], | 70.00th=[ 40109], 80.00th=[ 52691], 90.00th=[ 68682], 95.00th=[ 87557], | 99.00th=[112722], 99.50th=[121111], 99.90th=[135267], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 63, max= 447, per=27.08%, avg=253.16, stdev=94.98, samples=51 iops : min= 3, max= 27, avg=15.16, stdev= 5.96, samples=51 lat (usec) : 100=2.60%, 250=1.17% lat (msec) : 2=0.91%, 4=4.69%, 10=11.33%, 20=10.55%, 50=46.88% lat (msec) : 100=19.40%, 250=2.47% cpu : usr=0.07%, sys=7.57%, ctx=1917, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179556: Wed Aug 26 20:34:12 2026 read: IOPS=14, BW=232KiB/s (238kB/s)(6256KiB/26945msec) clat (usec): min=38, max=139245, avg=35070.21, stdev=22020.19 lat (usec): min=40, max=139247, avg=35072.77, stdev=22019.68 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 73], 10.00th=[ 1074], 20.00th=[ 18482], | 30.00th=[ 23462], 40.00th=[ 27919], 50.00th=[ 32637], 60.00th=[ 38536], | 70.00th=[ 44827], 80.00th=[ 50070], 90.00th=[ 62653], 95.00th=[ 71828], | 99.00th=[104334], 99.50th=[124257], 99.90th=[139461], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 56, max= 380, per=26.01%, avg=231.00, stdev=92.53, samples=53 iops : min= 3, max= 23, avg=13.77, stdev= 5.80, samples=53 write: IOPS=13, BW=224KiB/s (229kB/s)(6032KiB/26945msec); 0 zone resets clat (usec): min=1580, max=190186, avg=34356.69, stdev=32635.56 lat (usec): min=1582, max=190189, avg=34358.94, stdev=32635.58 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2376], 10.00th=[ 3294], 20.00th=[ 5735], | 30.00th=[ 11338], 40.00th=[ 18482], 50.00th=[ 25822], 60.00th=[ 32900], | 70.00th=[ 41157], 80.00th=[ 56886], 90.00th=[ 80217], 95.00th=[101188], | 99.00th=[147850], 99.50th=[154141], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 95, max= 445, per=23.49%, avg=219.66, stdev=87.16, samples=53 iops : min= 5, max= 27, avg=13.06, stdev= 5.49, samples=53 lat (usec) : 50=0.26%, 100=3.39%, 250=1.17%, 500=0.13%, 750=0.13% lat (msec) : 2=1.82%, 4=4.56%, 10=7.81%, 20=12.76%, 50=45.96% lat (msec) : 100=18.62%, 250=3.39% cpu : usr=0.06%, sys=7.12%, ctx=1897, 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=179557: Wed Aug 26 20:34:12 2026 read: IOPS=15, BW=247KiB/s (253kB/s)(6032KiB/24432msec) clat (usec): min=30, max=193619, avg=34443.57, stdev=23780.79 lat (usec): min=30, max=193620, avg=34445.16, stdev=23780.57 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 63], 10.00th=[ 105], 20.00th=[ 16319], | 30.00th=[ 22414], 40.00th=[ 27657], 50.00th=[ 32113], 60.00th=[ 36963], | 70.00th=[ 43779], 80.00th=[ 52691], 90.00th=[ 64226], 95.00th=[ 71828], | 99.00th=[115868], 99.50th=[131597], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 56, max= 542, per=27.48%, avg=244.06, stdev=90.98, samples=48 iops : min= 3, max= 33, avg=14.60, stdev= 5.67, samples=48 write: IOPS=16, BW=256KiB/s (262kB/s)(6256KiB/24432msec); 0 zone resets clat (usec): min=1428, max=137154, avg=28584.01, stdev=25959.05 lat (usec): min=1430, max=137157, avg=28588.32, stdev=25963.34 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2638], 10.00th=[ 3851], 20.00th=[ 5800], | 30.00th=[ 8979], 40.00th=[ 15401], 50.00th=[ 20841], 60.00th=[ 28443], | 70.00th=[ 35914], 80.00th=[ 48497], 90.00th=[ 67634], 95.00th=[ 81265], | 99.00th=[105382], 99.50th=[120062], 99.90th=[137364], 99.95th=[137364], | 99.99th=[137364] bw ( KiB/s): min= 95, max= 473, per=27.22%, avg=254.52, stdev=84.05, samples=48 iops : min= 5, max= 29, avg=15.27, stdev= 5.23, samples=48 lat (usec) : 50=0.52%, 100=4.17%, 250=0.78%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.26% lat (msec) : 2=1.30%, 4=5.08%, 10=11.20%, 20=13.54%, 50=41.93% lat (msec) : 100=19.27%, 250=1.56% cpu : usr=0.07%, sys=7.91%, ctx=1872, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=889KiB/s (910kB/s), 221KiB/s-247KiB/s (226kB/s-253kB/s), io=23.4MiB (24.5MB), run=24432-26945msec WRITE: bw=935KiB/s (958kB/s), 224KiB/s-256KiB/s (229kB/s-262kB/s), io=24.6MiB (25.8MB), run=24432-26945msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179550: Wed Aug 26 20:34:21 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(5920KiB/36282msec) clat (msec): min=7, max=166, avg=36.68, stdev=28.34 lat (msec): min=7, max=166, avg=36.68, stdev=28.34 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 52], 90.00th=[ 80], 95.00th=[ 100], | 99.00th=[ 134], 99.50th=[ 157], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 31, max= 448, per=24.73%, avg=162.21, stdev=91.66, samples=70 iops : min= 1, max= 28, avg= 9.46, stdev= 5.77, samples=70 write: IOPS=10, BW=176KiB/s (180kB/s)(6368KiB/36282msec); 0 zone resets clat (msec): min=15, max=201, avg=56.69, stdev=35.02 lat (msec): min=15, max=201, avg=56.71, stdev=35.02 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 55], | 70.00th=[ 66], 80.00th=[ 82], 90.00th=[ 104], 95.00th=[ 130], | 99.00th=[ 188], 99.50th=[ 192], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 63, max= 414, per=25.16%, avg=173.86, stdev=80.36, samples=71 iops : min= 3, max= 25, avg=10.18, stdev= 5.08, samples=71 lat (msec) : 10=0.91%, 20=15.10%, 50=50.39%, 100=25.52%, 250=8.07% cpu : usr=0.06%, sys=2.29%, ctx=1119, 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=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=179551: Wed Aug 26 20:34:21 2026 read: IOPS=9, BW=158KiB/s (161kB/s)(5744KiB/36465msec) clat (msec): min=9, max=154, avg=38.17, stdev=29.77 lat (msec): min=9, max=154, avg=38.17, stdev=29.77 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 40], 80.00th=[ 53], 90.00th=[ 85], 95.00th=[ 110], | 99.00th=[ 144], 99.50th=[ 150], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 31, max= 478, per=24.13%, avg=158.30, stdev=91.69, samples=71 iops : min= 1, max= 29, avg= 9.21, stdev= 5.74, samples=71 write: IOPS=11, BW=179KiB/s (184kB/s)(6544KiB/36465msec); 0 zone resets clat (msec): min=12, max=209, avg=55.50, stdev=33.56 lat (msec): min=12, max=209, avg=55.50, stdev=33.56 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 44], 60.00th=[ 52], | 70.00th=[ 64], 80.00th=[ 81], 90.00th=[ 105], 95.00th=[ 125], | 99.00th=[ 174], 99.50th=[ 190], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 63, max= 416, per=25.70%, avg=177.57, stdev=84.97, samples=72 iops : min= 3, max= 26, avg=10.42, stdev= 5.38, samples=72 lat (msec) : 10=0.39%, 20=15.36%, 50=51.82%, 100=23.31%, 250=9.11% cpu : usr=0.08%, sys=2.18%, ctx=1146, 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=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=179552: Wed Aug 26 20:34:21 2026 read: IOPS=10, BW=175KiB/s (179kB/s)(6256KiB/35848msec) clat (msec): min=8, max=159, avg=38.44, stdev=30.55 lat (msec): min=8, max=159, avg=38.45, stdev=30.55 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 58], 90.00th=[ 83], 95.00th=[ 110], | 99.00th=[ 153], 99.50th=[ 161], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 31, max= 416, per=26.64%, avg=174.77, stdev=99.11, samples=71 iops : min= 1, max= 26, avg=10.24, stdev= 6.27, samples=71 write: IOPS=10, BW=168KiB/s (172kB/s)(6032KiB/35848msec); 0 zone resets clat (msec): min=14, max=224, avg=54.89, stdev=32.09 lat (msec): min=14, max=224, avg=54.89, stdev=32.09 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 40], 50.00th=[ 45], 60.00th=[ 53], | 70.00th=[ 64], 80.00th=[ 77], 90.00th=[ 99], 95.00th=[ 118], | 99.00th=[ 174], 99.50th=[ 203], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 416, per=24.25%, avg=167.54, stdev=79.60, samples=71 iops : min= 1, max= 26, avg= 9.79, stdev= 4.99, samples=71 lat (msec) : 10=0.13%, 20=16.54%, 50=50.65%, 100=24.35%, 250=8.33% cpu : usr=0.05%, sys=2.38%, ctx=1186, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179553: Wed Aug 26 20:34:21 2026 read: IOPS=10, BW=167KiB/s (171kB/s)(6032KiB/36152msec) clat (msec): min=8, max=146, avg=37.40, stdev=27.91 lat (msec): min=8, max=146, avg=37.40, stdev=27.91 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 56], 90.00th=[ 78], 95.00th=[ 102], | 99.00th=[ 136], 99.50th=[ 146], 99.90th=[ 146], 99.95th=[ 146], | 99.99th=[ 146] bw ( KiB/s): min= 62, max= 448, per=25.52%, avg=167.43, stdev=90.26, samples=70 iops : min= 3, max= 28, avg= 9.77, stdev= 5.71, samples=70 write: IOPS=10, BW=173KiB/s (177kB/s)(6256KiB/36152msec); 0 zone resets clat (msec): min=11, max=217, avg=55.79, stdev=33.49 lat (msec): min=11, max=217, avg=55.80, stdev=33.49 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 35], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 52], | 70.00th=[ 64], 80.00th=[ 83], 90.00th=[ 105], 95.00th=[ 122], | 99.00th=[ 180], 99.50th=[ 211], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 32, max= 414, per=24.90%, avg=172.08, stdev=82.15, samples=71 iops : min= 2, max= 25, avg=10.07, stdev= 5.20, samples=71 lat (msec) : 10=1.17%, 20=14.71%, 50=51.17%, 100=24.61%, 250=8.33% cpu : usr=0.07%, sys=2.33%, ctx=1185, 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=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=657KiB/s (673kB/s), 158KiB/s-175KiB/s (161kB/s-179kB/s), io=23.4MiB (24.5MB), run=35848-36465msec WRITE: bw=691KiB/s (708kB/s), 168KiB/s-179KiB/s (172kB/s-184kB/s), io=24.6MiB (25.8MB), run=35848-36465msec 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=179568: Wed Aug 26 20:34:35 2026 read: IOPS=1, BW=1961KiB/s (2008kB/s)(7168KiB/3655msec) clat (msec): min=2, max=463, avg=226.77, stdev=137.42 lat (msec): min=2, max=463, avg=226.78, stdev=137.42 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 171], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 234], 60.00th=[ 243], | 70.00th=[ 243], 80.00th=[ 279], 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= 2015, max= 4190, per=78.48%, avg=3428.00, stdev=1224.95, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1401KiB/s (1434kB/s)(5120KiB/3655msec); 0 zone resets clat (msec): min=224, max=524, avg=403.36, stdev=123.08 lat (msec): min=225, max=525, avg=403.81, stdev=123.44 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 1643, max= 4087, per=42.17%, avg=2579.00, stdev=1318.59, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 4=8.33%, 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=17.60%, ctx=244, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179569: Wed Aug 26 20:34:35 2026 read: IOPS=0, BW=437KiB/s (447kB/s)(2048KiB/4688msec) clat (msec): min=165, max=255, avg=210.50, stdev=63.41 lat (msec): min=165, max=255, avg=210.50, stdev=63.41 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 255], | 70.00th=[ 255], 80.00th=[ 255], 90.00th=[ 255], 95.00th=[ 255], | 99.00th=[ 255], 99.50th=[ 255], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 1404, max= 2015, per=39.14%, avg=1709.50, stdev=432.04, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2184KiB/s (2237kB/s)(10.0MiB/4688msec); 0 zone resets clat (msec): min=128, max=816, avg=414.97, stdev=231.17 lat (msec): min=128, max=816, avg=415.19, stdev=231.07 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 194], | 30.00th=[ 268], 40.00th=[ 271], 50.00th=[ 275], 60.00th=[ 355], | 70.00th=[ 575], 80.00th=[ 617], 90.00th=[ 651], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1643, max= 4096, per=37.08%, avg=2267.71, stdev=818.90, samples=7 iops : min= 1, max= 4, avg= 1.43, stdev= 1.13, samples=7 lat (msec) : 250=25.00%, 500=41.67%, 750=25.00%, 1000=8.33% cpu : usr=0.06%, sys=18.97%, ctx=161, 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=179571: Wed Aug 26 20:34:35 2026 read: IOPS=1, BW=1600KiB/s (1639kB/s)(6144KiB/3839msec) clat (usec): min=523, max=798720, avg=267967.98, stdev=294441.00 lat (usec): min=524, max=798721, avg=267969.43, stdev=294440.98 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[196084], 50.00th=[196084], 60.00th=[291505], | 70.00th=[320865], 80.00th=[320865], 90.00th=[801113], 95.00th=[801113], | 99.00th=[801113], 99.50th=[801113], 99.90th=[801113], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 2007, max= 4031, per=57.85%, avg=2527.00, stdev=1002.76, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1600KiB/s (1639kB/s)(6144KiB/3839msec); 0 zone resets clat (msec): min=192, max=481, avg=352.50, stdev=114.09 lat (msec): min=192, max=481, avg=352.57, stdev=114.12 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 426], | 70.00th=[ 435], 80.00th=[ 435], 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= 1505, max= 4063, per=44.55%, avg=2724.50, stdev=1163.27, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=16.67% lat (msec) : 250=25.00%, 500=50.00%, 1000=8.33% cpu : usr=0.03%, sys=16.81%, ctx=260, 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=179573: Wed Aug 26 20:34:35 2026 read: IOPS=1, BW=1588KiB/s (1626kB/s)(5120KiB/3225msec) clat (usec): min=844, max=220906, avg=87047.13, stdev=113191.56 lat (usec): min=845, max=220907, avg=87048.58, stdev=113191.48 clat percentiles (usec): | 1.00th=[ 848], 5.00th=[ 848], 10.00th=[ 848], 20.00th=[ 848], | 30.00th=[ 947], 40.00th=[ 947], 50.00th=[ 12125], 60.00th=[ 12125], | 70.00th=[200279], 80.00th=[200279], 90.00th=[221250], 95.00th=[221250], | 99.00th=[221250], 99.50th=[221250], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 2007, max= 6131, per=93.15%, avg=4069.00, stdev=2916.11, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2223KiB/s (2276kB/s)(7168KiB/3225msec); 0 zone resets clat (msec): min=94, max=649, avg=351.71, stdev=186.64 lat (msec): min=94, max=650, avg=351.83, stdev=186.64 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 255], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 288], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 542], 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= 1432, max= 2039, per=29.11%, avg=1780.25, stdev=293.53, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 1000=16.67% lat (msec) : 20=8.33%, 100=8.33%, 250=16.67%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=21.81%, ctx=212, 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=4369KiB/s (4473kB/s), 437KiB/s-1961KiB/s (447kB/s-2008kB/s), io=20.0MiB (20.0MB), run=3225-4688msec WRITE: bw=6116KiB/s (6263kB/s), 1401KiB/s-2223KiB/s (1434kB/s-2276kB/s), io=28.0MiB (29.4MB), run=3225-4688msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179570: Wed Aug 26 20:34:36 2026 read: IOPS=1, BW=1794KiB/s (1837kB/s)(7168KiB/3996msec) clat (msec): min=93, max=233, avg=167.37, stdev=49.68 lat (msec): min=93, max=233, avg=167.37, stdev=49.68 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 140], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 157], 60.00th=[ 176], | 70.00th=[ 176], 80.00th=[ 228], 90.00th=[ 234], 95.00th=[ 234], | 99.00th=[ 234], 99.50th=[ 234], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 2035, max= 4420, per=86.53%, avg=3511.33, stdev=1289.86, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1281KiB/s (1312kB/s)(5120KiB/3996msec); 0 zone resets clat (msec): min=286, max=744, avg=553.33, stdev=179.77 lat (msec): min=287, max=744, avg=553.59, stdev=179.49 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 514], 40.00th=[ 514], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 2015, max= 2043, per=35.78%, avg=2033.00, stdev=12.44, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=8.33%, 750=33.33% cpu : usr=0.00%, sys=6.73%, ctx=114, 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=179572: Wed Aug 26 20:34:36 2026 read: IOPS=0, BW=406KiB/s (416kB/s)(2048KiB/5046msec) clat (msec): min=139, max=493, avg=316.64, stdev=250.19 lat (msec): min=139, max=493, avg=316.64, stdev=250.19 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 1796, max= 2035, per=47.20%, avg=1915.50, stdev=169.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2029KiB/s (2078kB/s)(10.0MiB/5046msec); 0 zone resets clat (msec): min=125, max=635, avg=408.25, stdev=195.71 lat (msec): min=125, max=635, avg=408.48, stdev=195.60 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 126], 10.00th=[ 126], 20.00th=[ 207], | 30.00th=[ 239], 40.00th=[ 275], 50.00th=[ 313], 60.00th=[ 498], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 625], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 2007, max= 4047, per=40.79%, avg=2317.86, stdev=762.60, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=33.33%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=6.86%, ctx=138, 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=179574: Wed Aug 26 20:34:36 2026 read: IOPS=1, BW=1341KiB/s (1374kB/s)(6144KiB/4580msec) clat (msec): min=88, max=691, avg=292.80, stdev=263.48 lat (msec): min=88, max=691, avg=292.81, stdev=263.48 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 93], | 30.00th=[ 93], 40.00th=[ 131], 50.00th=[ 131], 60.00th=[ 194], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 2007, max= 4079, per=66.54%, avg=2700.33, stdev=1193.97, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1341KiB/s (1374kB/s)(6144KiB/4580msec); 0 zone resets clat (msec): min=105, max=735, avg=420.79, stdev=238.68 lat (msec): min=105, max=735, avg=420.91, stdev=238.68 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 401], 50.00th=[ 401], 60.00th=[ 506], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1796, max= 2039, per=34.90%, avg=1983.20, stdev=105.50, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=8.33%, 750=41.67% cpu : usr=0.00%, sys=5.85%, ctx=157, 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=179575: Wed Aug 26 20:34:36 2026 read: IOPS=0, BW=1016KiB/s (1041kB/s)(5120KiB/5037msec) clat (msec): min=76, max=888, avg=332.81, stdev=333.29 lat (msec): min=76, max=888, avg=332.82, stdev=333.29 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 184], 60.00th=[ 184], | 70.00th=[ 393], 80.00th=[ 393], 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= 4031, max= 4079, per=99.93%, avg=4055.00, stdev=33.94, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1423KiB/s (1457kB/s)(7168KiB/5037msec); 0 zone resets clat (msec): min=128, max=964, avg=437.58, stdev=291.48 lat (msec): min=128, max=964, avg=437.93, stdev=291.40 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 150], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 426], 60.00th=[ 477], | 70.00th=[ 477], 80.00th=[ 625], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 2023, max= 4015, per=44.53%, avg=2530.00, stdev=990.04, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 1000=16.67% cpu : usr=0.02%, sys=7.43%, ctx=129, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4059KiB/s (4156kB/s), 406KiB/s-1794KiB/s (416kB/s-1837kB/s), io=20.0MiB (20.0MB), run=3996-5046msec WRITE: bw=5682KiB/s (5818kB/s), 1281KiB/s-2029KiB/s (1312kB/s-2078kB/s), io=28.0MiB (29.4MB), run=3996-5046msec 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=179582: Wed Aug 26 20:34:48 2026 read: IOPS=2, BW=8516KiB/s (8720kB/s)(12.0MiB/1443msec) clat (msec): min=319, max=561, avg=472.09, stdev=132.84 lat (msec): min=319, max=561, avg=472.09, stdev=132.84 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 535], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 6113, max= 7713, per=100.00%, avg=6913.00, stdev=1131.37, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=8.67%, ctx=77, 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=179583: Wed Aug 26 20:34:48 2026 read: IOPS=0, BW=1178KiB/s (1206kB/s)(4096KiB/3478msec) clat (nsec): min=1180.2M, max=1180.2M, avg=1180193097.00, stdev= 0.00 lat (nsec): min=1180.2M, max=1180.2M, avg=1180195819.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 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=2355KiB/s (2412kB/s)(8192KiB/3478msec); 0 zone resets clat (msec): min=905, max=1337, avg=1121.23, stdev=305.18 lat (msec): min=905, max=1337, avg=1121.56, stdev=305.14 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=[ 1334], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8047, max= 8047, per=85.42%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.06%, sys=2.82%, ctx=49, 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=179584: Wed Aug 26 20:34:48 2026 write: IOPS=0, BW=3832KiB/s (3924kB/s)(12.0MiB/3207msec); 0 zone resets clat (msec): min=225, max=1698, avg=1061.13, stdev=756.27 lat (msec): min=225, max=1698, avg=1061.53, stdev=756.29 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7922, max= 8047, per=84.75%, avg=7984.50, stdev=88.39, 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=0.00%, sys=5.14%, ctx=34, 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=179585: Wed Aug 26 20:34:48 2026 write: IOPS=1, BW=4409KiB/s (4515kB/s)(12.0MiB/2787msec); 0 zone resets clat (msec): min=359, max=1201, avg=907.75, stdev=475.51 lat (msec): min=359, max=1206, avg=909.71, stdev=476.89 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 6491, max= 8143, per=77.67%, avg=7317.00, stdev=1168.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.04%, sys=4.02%, ctx=82, 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=4711KiB/s (4824kB/s), 1178KiB/s-8516KiB/s (1206kB/s-8720kB/s), io=16.0MiB (16.8MB), run=1443-3478msec WRITE: bw=9422KiB/s (9648kB/s), 2355KiB/s-4409KiB/s (2412kB/s-4515kB/s), io=32.0MiB (33.6MB), run=2787-3478msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179587: Wed Aug 26 20:34:48 2026 read: IOPS=1, BW=5009KiB/s (5130kB/s)(12.0MiB/2453msec) clat (msec): min=761, max=836, avg=794.08, stdev=38.41 lat (msec): min=761, max=836, avg=794.08, stdev=38.41 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7892, max= 8175, per=100.00%, avg=8033.50, stdev=200.11, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=13.46%, ctx=321, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179588: Wed Aug 26 20:34:48 2026 read: IOPS=0, BW=1638KiB/s (1677kB/s)(4096KiB/2501msec) clat (nsec): min=661807k, max=661807k, avg=661806964.00, stdev= 0.00 lat (nsec): min=661810k, max=661810k, avg=661810365.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7907, max= 7907, per=100.00%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3275KiB/s (3354kB/s)(8192KiB/2501msec); 0 zone resets clat (msec): min=645, max=1084, avg=865.10, stdev=310.91 lat (msec): min=645, max=1085, avg=865.47, stdev=310.84 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 1083], | 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= 8175, max= 8175, per=77.69%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.08%, sys=7.16%, ctx=125, 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=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=179589: Wed Aug 26 20:34:48 2026 write: IOPS=0, BW=3946KiB/s (4041kB/s)(12.0MiB/3114msec); 0 zone resets clat (msec): min=243, max=1678, avg=1014.61, stdev=723.30 lat (msec): min=243, max=1678, avg=1015.07, stdev=723.31 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 8175, max= 8175, per=77.69%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.76%, ctx=47, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179590: Wed Aug 26 20:34:48 2026 write: IOPS=1, BW=4486KiB/s (4594kB/s)(12.0MiB/2739msec); 0 zone resets clat (msec): min=536, max=1205, avg=898.89, stdev=338.15 lat (msec): min=536, max=1205, avg=899.36, stdev=338.22 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 535], | 30.00th=[ 535], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 5542, max= 8175, per=65.18%, avg=6858.50, stdev=1861.81, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.82%, ctx=51, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6551KiB/s (6708kB/s), 1638KiB/s-5009KiB/s (1677kB/s-5130kB/s), io=16.0MiB (16.8MB), run=2453-2501msec WRITE: bw=10.3MiB/s (10.8MB/s), 3275KiB/s-4486KiB/s (3354kB/s-4594kB/s), io=32.0MiB (33.6MB), run=2501-3114msec