== sanity test 398b: DIO and buffer IO race ============== 00:44:52 (1781239492) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.28803 s, 6.9 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=150109: Fri Jun 12 00:47:35 2026 read: IOPS=10, BW=41.5KiB/s (42.5kB/s)(5992KiB/144294msec) clat (usec): min=36, max=1079.6k, avg=54559.92, stdev=42364.38 lat (usec): min=37, max=1079.6k, avg=54564.76, stdev=42365.15 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 15139], 10.00th=[ 21627], | 20.00th=[ 28705], 30.00th=[ 33817], 40.00th=[ 39584], | 50.00th=[ 46924], 60.00th=[ 55313], 70.00th=[ 65274], | 80.00th=[ 77071], 90.00th=[ 94897], 95.00th=[ 113771], | 99.00th=[ 179307], 99.50th=[ 189793], 99.90th=[ 265290], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 87, per=24.69%, avg=40.98, stdev=16.96, samples=283 iops : min= 1, max= 21, avg= 9.57, stdev= 4.26, samples=283 write: IOPS=10, BW=43.6KiB/s (44.7kB/s)(6296KiB/144294msec); 0 zone resets clat (usec): min=936, max=291305, avg=39418.08, stdev=39951.43 lat (usec): min=939, max=291307, avg=39420.28, stdev=39951.36 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1614], 10.00th=[ 2376], 20.00th=[ 5342], | 30.00th=[ 9765], 40.00th=[ 19792], 50.00th=[ 28705], 60.00th=[ 38536], | 70.00th=[ 49021], 80.00th=[ 67634], 90.00th=[ 92799], 95.00th=[122160], | 99.00th=[175113], 99.50th=[198181], 99.90th=[258999], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 7, max= 134, per=24.94%, avg=43.15, stdev=21.07, samples=283 iops : min= 1, max= 33, avg=10.12, stdev= 5.30, samples=283 lat (usec) : 50=0.13%, 100=1.27%, 250=0.20%, 500=0.03%, 1000=0.07% lat (msec) : 2=4.20%, 4=4.17%, 10=7.26%, 20=7.42%, 50=37.70% lat (msec) : 100=29.52%, 250=7.88%, 500=0.13%, 2000=0.03% cpu : usr=0.08%, sys=4.89%, ctx=7073, 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=150110: Fri Jun 12 00:47:35 2026 read: IOPS=10, BW=41.6KiB/s (42.6kB/s)(5940KiB/142632msec) clat (usec): min=50, max=1082.3k, avg=54196.86, stdev=42752.36 lat (usec): min=51, max=1082.3k, avg=54200.71, stdev=42751.68 clat percentiles (usec): | 1.00th=[ 69], 5.00th=[ 16450], 10.00th=[ 21627], | 20.00th=[ 28443], 30.00th=[ 34341], 40.00th=[ 40109], | 50.00th=[ 46400], 60.00th=[ 53740], 70.00th=[ 63177], | 80.00th=[ 73925], 90.00th=[ 93848], 95.00th=[ 113771], | 99.00th=[ 185598], 99.50th=[ 214959], 99.90th=[ 261096], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 95, per=24.85%, avg=41.25, stdev=17.50, samples=280 iops : min= 1, max= 23, avg= 9.64, stdev= 4.41, samples=280 write: IOPS=11, BW=44.5KiB/s (45.6kB/s)(6348KiB/142632msec); 0 zone resets clat (usec): min=1185, max=295713, avg=38797.61, stdev=38877.48 lat (usec): min=1185, max=295715, avg=38802.04, stdev=38879.10 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1598], 10.00th=[ 2474], 20.00th=[ 5145], | 30.00th=[ 8586], 40.00th=[ 19006], 50.00th=[ 28181], 60.00th=[ 38011], | 70.00th=[ 50594], 80.00th=[ 67634], 90.00th=[ 91751], 95.00th=[113771], | 99.00th=[166724], 99.50th=[181404], 99.90th=[229639], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 158, per=25.66%, avg=44.40, stdev=20.99, samples=278 iops : min= 1, max= 39, avg=10.43, stdev= 5.29, samples=278 lat (usec) : 100=0.91%, 250=0.20%, 500=0.03%, 750=0.03% lat (msec) : 2=4.56%, 4=3.65%, 10=8.46%, 20=7.23%, 50=37.43% lat (msec) : 100=29.62%, 250=7.71%, 500=0.13%, 2000=0.03% cpu : usr=0.08%, sys=4.81%, 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=150111: Fri Jun 12 00:47:35 2026 read: IOPS=10, BW=42.7KiB/s (43.7kB/s)(6028KiB/141128msec) clat (usec): min=31, max=1075.0k, avg=52646.89, stdev=41700.43 lat (usec): min=31, max=1075.0k, avg=52659.43, stdev=41698.73 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 12125], 10.00th=[ 18744], | 20.00th=[ 26608], 30.00th=[ 32900], 40.00th=[ 39060], | 50.00th=[ 45351], 60.00th=[ 52691], 70.00th=[ 62653], | 80.00th=[ 74974], 90.00th=[ 93848], 95.00th=[ 113771], | 99.00th=[ 156238], 99.50th=[ 187696], 99.90th=[ 212861], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 110, per=25.53%, avg=42.38, stdev=17.72, samples=277 iops : min= 1, max= 27, avg= 9.92, stdev= 4.46, samples=277 write: IOPS=11, BW=44.4KiB/s (45.4kB/s)(6260KiB/141128msec); 0 zone resets clat (usec): min=1094, max=373523, avg=39116.80, stdev=40209.07 lat (usec): min=1095, max=373525, avg=39124.49, stdev=40223.36 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1631], 10.00th=[ 2540], 20.00th=[ 5735], | 30.00th=[ 10028], 40.00th=[ 19268], 50.00th=[ 28705], 60.00th=[ 38011], | 70.00th=[ 49021], 80.00th=[ 66847], 90.00th=[ 90702], 95.00th=[115868], | 99.00th=[181404], 99.50th=[193987], 99.90th=[287310], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 7, max= 126, per=25.48%, avg=44.08, stdev=21.28, samples=276 iops : min= 1, max= 31, avg=10.35, stdev= 5.37, samples=276 lat (usec) : 50=0.10%, 100=1.60%, 250=0.36%, 500=0.03% lat (msec) : 2=4.04%, 4=3.71%, 10=7.52%, 20=9.15%, 50=37.14% lat (msec) : 100=28.71%, 250=7.52%, 500=0.10%, 2000=0.03% cpu : usr=0.08%, sys=4.92%, ctx=6988, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150112: Fri Jun 12 00:47:35 2026 read: IOPS=10, BW=41.9KiB/s (42.9kB/s)(6052KiB/144525msec) clat (usec): min=47, max=1085.9k, avg=53164.18, stdev=43173.94 lat (usec): min=47, max=1085.9k, avg=53165.62, stdev=43173.88 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 13698], 10.00th=[ 20055], | 20.00th=[ 27395], 30.00th=[ 32375], 40.00th=[ 39060], | 50.00th=[ 45351], 60.00th=[ 52691], 70.00th=[ 60556], | 80.00th=[ 74974], 90.00th=[ 91751], 95.00th=[ 120062], | 99.00th=[ 166724], 99.50th=[ 202376], 99.90th=[ 252707], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 111, per=25.05%, avg=41.59, stdev=17.64, samples=283 iops : min= 1, max= 27, avg= 9.72, stdev= 4.45, samples=283 write: IOPS=10, BW=43.1KiB/s (44.2kB/s)(6236KiB/144525msec); 0 zone resets clat (usec): min=1016, max=293777, avg=40760.78, stdev=40634.49 lat (usec): min=1017, max=293779, avg=40762.59, stdev=40634.52 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1647], 10.00th=[ 2540], 20.00th=[ 5735], | 30.00th=[ 10683], 40.00th=[ 20055], 50.00th=[ 29754], 60.00th=[ 39584], | 70.00th=[ 51643], 80.00th=[ 70779], 90.00th=[ 95945], 95.00th=[121111], | 99.00th=[181404], 99.50th=[200279], 99.90th=[248513], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 111, per=24.82%, avg=42.95, stdev=19.56, samples=282 iops : min= 1, max= 27, avg=10.07, stdev= 4.93, samples=282 lat (usec) : 50=0.07%, 100=1.37%, 250=0.33%, 1000=0.03% lat (msec) : 2=4.10%, 4=3.48%, 10=7.10%, 20=8.69%, 50=37.47% lat (msec) : 100=29.04%, 250=8.24%, 500=0.07%, 2000=0.03% cpu : usr=0.07%, sys=4.79%, ctx=6900, 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=166KiB/s (170kB/s), 41.5KiB/s-42.7KiB/s (42.5kB/s-43.7kB/s), io=23.4MiB (24.6MB), run=141128-144525msec WRITE: bw=174KiB/s (178kB/s), 43.1KiB/s-44.5KiB/s (44.2kB/s-45.6kB/s), io=24.6MiB (25.7MB), run=141128-144525msec rand-rw: (groupid=0, jobs=1): err= 0: pid=150114: Fri Jun 12 00:48:32 2026 read: IOPS=7, BW=29.9KiB/s (30.6kB/s)(5992KiB/200315msec) clat (msec): min=6, max=1171, avg=53.41, stdev=51.77 lat (msec): min=6, max=1171, avg=53.41, stdev=51.77 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 58], 80.00th=[ 73], 90.00th=[ 111], 95.00th=[ 144], | 99.00th=[ 211], 99.50th=[ 247], 99.90th=[ 426], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 95, per=25.22%, avg=30.01, stdev=18.86, samples=383 iops : min= 1, max= 23, avg= 6.82, stdev= 4.75, samples=383 write: IOPS=7, BW=31.4KiB/s (32.2kB/s)(6296KiB/200315msec); 0 zone resets clat (msec): min=13, max=368, avg=76.32, stdev=47.39 lat (msec): min=13, max=368, avg=76.32, stdev=47.39 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 30], 20.00th=[ 40], | 30.00th=[ 47], 40.00th=[ 55], 50.00th=[ 65], 60.00th=[ 77], | 70.00th=[ 90], 80.00th=[ 109], 90.00th=[ 136], 95.00th=[ 171], | 99.00th=[ 243], 99.50th=[ 279], 99.90th=[ 347], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7, max= 118, per=25.18%, avg=31.23, stdev=16.97, samples=388 iops : min= 1, max= 29, avg= 7.12, stdev= 4.28, samples=388 lat (msec) : 10=0.49%, 20=7.39%, 50=40.92%, 100=32.88%, 250=17.68% lat (msec) : 500=0.62%, 2000=0.03% cpu : usr=0.06%, sys=2.07%, ctx=5007, 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=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=150115: Fri Jun 12 00:48:32 2026 read: IOPS=7, BW=29.5KiB/s (30.2kB/s)(5940KiB/201128msec) clat (msec): min=5, max=1039, avg=53.92, stdev=49.83 lat (msec): min=5, max=1039, avg=53.93, stdev=49.83 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 48], | 70.00th=[ 61], 80.00th=[ 79], 90.00th=[ 112], 95.00th=[ 142], | 99.00th=[ 230], 99.50th=[ 255], 99.90th=[ 309], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 125, per=25.29%, avg=30.09, stdev=18.81, samples=381 iops : min= 1, max= 31, avg= 6.84, stdev= 4.75, samples=381 write: IOPS=7, BW=31.6KiB/s (32.3kB/s)(6348KiB/201128msec); 0 zone resets clat (msec): min=9, max=428, avg=76.15, stdev=50.03 lat (msec): min=9, max=428, avg=76.16, stdev=50.03 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 39], | 30.00th=[ 46], 40.00th=[ 54], 50.00th=[ 63], 60.00th=[ 72], | 70.00th=[ 87], 80.00th=[ 107], 90.00th=[ 140], 95.00th=[ 176], | 99.00th=[ 257], 99.50th=[ 292], 99.90th=[ 355], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 7, max= 103, per=25.35%, avg=31.44, stdev=17.30, samples=389 iops : min= 1, max= 25, avg= 7.17, stdev= 4.36, samples=389 lat (msec) : 10=0.88%, 20=8.33%, 50=39.23%, 100=33.69%, 250=16.96% lat (msec) : 500=0.88%, 2000=0.03% cpu : usr=0.06%, sys=1.94%, ctx=4983, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150116: Fri Jun 12 00:48:32 2026 read: IOPS=7, BW=30.0KiB/s (30.7kB/s)(6028KiB/200919msec) clat (msec): min=5, max=423, avg=53.18, stdev=43.66 lat (msec): min=5, max=423, avg=53.20, stdev=43.68 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 59], 80.00th=[ 78], 90.00th=[ 109], 95.00th=[ 142], | 99.00th=[ 209], 99.50th=[ 236], 99.90th=[ 376], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 102, per=25.51%, avg=30.36, stdev=18.92, samples=384 iops : min= 1, max= 25, avg= 6.91, stdev= 4.77, samples=384 write: IOPS=7, BW=31.2KiB/s (31.9kB/s)(6260KiB/200919msec); 0 zone resets clat (msec): min=12, max=1026, avg=77.01, stdev=56.29 lat (msec): min=12, max=1026, avg=77.02, stdev=56.29 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 38], | 30.00th=[ 45], 40.00th=[ 54], 50.00th=[ 62], 60.00th=[ 73], | 70.00th=[ 89], 80.00th=[ 110], 90.00th=[ 142], 95.00th=[ 171], | 99.00th=[ 275], 99.50th=[ 300], 99.90th=[ 388], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 133, per=24.94%, avg=30.93, stdev=18.59, samples=391 iops : min= 1, max= 33, avg= 7.05, stdev= 4.69, samples=391 lat (msec) : 10=0.72%, 20=7.98%, 50=41.05%, 100=32.06%, 250=17.25% lat (msec) : 500=0.91%, 2000=0.03% cpu : usr=0.06%, sys=1.93%, ctx=4894, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150117: Fri Jun 12 00:48:32 2026 read: IOPS=7, BW=30.1KiB/s (30.9kB/s)(6052KiB/200796msec) clat (msec): min=6, max=332, avg=52.65, stdev=43.01 lat (msec): min=6, max=332, avg=52.66, stdev=43.01 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 46], | 70.00th=[ 58], 80.00th=[ 77], 90.00th=[ 108], 95.00th=[ 140], | 99.00th=[ 218], 99.50th=[ 253], 99.90th=[ 305], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 118, per=25.87%, avg=30.79, stdev=19.42, samples=378 iops : min= 1, max= 29, avg= 7.01, stdev= 4.89, samples=378 write: IOPS=7, BW=31.1KiB/s (31.8kB/s)(6236KiB/200796msec); 0 zone resets clat (msec): min=12, max=1043, avg=77.56, stdev=54.96 lat (msec): min=12, max=1043, avg=77.56, stdev=54.96 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 31], 20.00th=[ 40], | 30.00th=[ 47], 40.00th=[ 55], 50.00th=[ 64], 60.00th=[ 75], | 70.00th=[ 88], 80.00th=[ 108], 90.00th=[ 142], 95.00th=[ 176], | 99.00th=[ 241], 99.50th=[ 275], 99.90th=[ 422], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 118, per=24.84%, avg=30.80, stdev=16.66, samples=389 iops : min= 1, max= 29, avg= 7.02, stdev= 4.20, samples=389 lat (msec) : 10=0.81%, 20=8.72%, 50=40.04%, 100=32.45%, 250=17.32% lat (msec) : 500=0.62%, 2000=0.03% cpu : usr=0.05%, sys=2.02%, ctx=5026, 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=119KiB/s (122kB/s), 29.5KiB/s-30.1KiB/s (30.2kB/s-30.9kB/s), io=23.4MiB (24.6MB), run=200315-201128msec WRITE: bw=125KiB/s (128kB/s), 31.1KiB/s-31.6KiB/s (31.8kB/s-32.3kB/s), io=24.6MiB (25.7MB), run=200315-201128msec 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=150168: Fri Jun 12 00:49:20 2026 read: IOPS=10, BW=176KiB/s (180kB/s)(5920KiB/33657msec) clat (usec): min=41, max=241789, avg=47778.41, stdev=29499.15 lat (usec): min=41, max=241790, avg=47779.75, stdev=29499.16 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 76], 10.00th=[ 247], 20.00th=[ 27919], | 30.00th=[ 34341], 40.00th=[ 40109], 50.00th=[ 45351], 60.00th=[ 51643], | 70.00th=[ 60031], 80.00th=[ 67634], 90.00th=[ 82314], 95.00th=[ 95945], | 99.00th=[132645], 99.50th=[147850], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 93, max= 351, per=27.02%, avg=176.18, stdev=58.82, samples=66 iops : min= 5, max= 21, avg=10.20, stdev= 3.68, samples=66 write: IOPS=11, BW=189KiB/s (194kB/s)(6368KiB/33657msec); 0 zone resets clat (usec): min=1489, max=213698, avg=39395.18, stdev=37248.36 lat (usec): min=1489, max=213700, avg=39397.63, stdev=37248.32 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 8], | 30.00th=[ 12], 40.00th=[ 20], 50.00th=[ 29], 60.00th=[ 39], | 70.00th=[ 51], 80.00th=[ 65], 90.00th=[ 90], 95.00th=[ 123], | 99.00th=[ 159], 99.50th=[ 163], 99.90th=[ 213], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 31, max= 351, per=27.60%, avg=189.32, stdev=71.91, samples=66 iops : min= 1, max= 21, avg=11.02, stdev= 4.52, samples=66 lat (usec) : 50=0.26%, 100=4.04%, 250=0.52%, 500=0.13%, 1000=0.13% lat (msec) : 2=0.52%, 4=4.95%, 10=8.85%, 20=8.98%, 50=35.29% lat (msec) : 100=30.34%, 250=5.99% cpu : usr=0.09%, sys=5.65%, ctx=1703, 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=150169: Fri Jun 12 00:49:20 2026 read: IOPS=9, BW=156KiB/s (160kB/s)(5744KiB/36714msec) clat (usec): min=44, max=220667, avg=53212.43, stdev=35662.30 lat (usec): min=45, max=220669, avg=53213.81, stdev=35662.26 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 84], 10.00th=[ 16712], 20.00th=[ 27657], | 30.00th=[ 33162], 40.00th=[ 39584], 50.00th=[ 46400], 60.00th=[ 55313], | 70.00th=[ 65799], 80.00th=[ 74974], 90.00th=[ 89654], 95.00th=[128451], | 99.00th=[179307], 99.50th=[191890], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 21, max= 378, per=24.13%, avg=157.31, stdev=68.98, samples=72 iops : min= 1, max= 23, avg= 9.01, stdev= 4.36, samples=72 write: IOPS=11, BW=178KiB/s (183kB/s)(6544KiB/36714msec); 0 zone resets clat (usec): min=1832, max=293407, avg=42666.90, stdev=40798.24 lat (usec): min=1835, max=293410, avg=42671.63, stdev=40796.38 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 8], | 30.00th=[ 15], 40.00th=[ 24], 50.00th=[ 32], 60.00th=[ 42], | 70.00th=[ 55], 80.00th=[ 69], 90.00th=[ 96], 95.00th=[ 125], | 99.00th=[ 163], 99.50th=[ 192], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 504, per=25.93%, avg=177.86, stdev=87.30, samples=72 iops : min= 1, max= 31, avg=10.32, stdev= 5.53, samples=72 lat (usec) : 50=0.13%, 100=2.73%, 250=0.26% lat (msec) : 2=0.26%, 4=5.34%, 10=6.90%, 20=8.33%, 50=36.85% lat (msec) : 100=30.73%, 250=8.33%, 500=0.13% cpu : usr=0.05%, sys=5.28%, ctx=1833, 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=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=150170: Fri Jun 12 00:49:20 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(6256KiB/36318msec) clat (usec): min=46, max=301735, avg=53991.96, stdev=35855.90 lat (usec): min=47, max=301737, avg=53993.52, stdev=35855.89 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 86], 10.00th=[ 21365], 20.00th=[ 27919], | 30.00th=[ 33817], 40.00th=[ 40633], 50.00th=[ 47973], 60.00th=[ 55313], | 70.00th=[ 65274], 80.00th=[ 74974], 90.00th=[ 91751], 95.00th=[119014], | 99.00th=[181404], 99.50th=[229639], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 63, max= 380, per=26.45%, avg=172.45, stdev=66.60, samples=71 iops : min= 3, max= 23, avg= 9.97, stdev= 4.19, samples=71 write: IOPS=10, BW=166KiB/s (170kB/s)(6032KiB/36318msec); 0 zone resets clat (usec): min=1331, max=188441, avg=39477.44, stdev=36934.83 lat (usec): min=1334, max=188443, avg=39480.07, stdev=36934.95 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 7], | 30.00th=[ 13], 40.00th=[ 21], 50.00th=[ 29], 60.00th=[ 41], | 70.00th=[ 50], 80.00th=[ 66], 90.00th=[ 88], 95.00th=[ 126], | 99.00th=[ 155], 99.50th=[ 182], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 31, max= 380, per=23.82%, avg=163.42, stdev=78.94, samples=71 iops : min= 1, max= 23, avg= 9.41, stdev= 5.01, samples=71 lat (usec) : 50=0.26%, 100=2.60% lat (msec) : 2=0.26%, 4=5.34%, 10=7.55%, 20=8.07%, 50=37.76% lat (msec) : 100=30.73%, 250=7.29%, 500=0.13% cpu : usr=0.10%, sys=5.19%, ctx=1863, 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=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=150171: Fri Jun 12 00:49:20 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(6032KiB/35849msec) clat (usec): min=54, max=188221, avg=50265.56, stdev=35445.23 lat (usec): min=54, max=188222, avg=50267.09, stdev=35445.59 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 73], 10.00th=[ 93], 20.00th=[ 23987], | 30.00th=[ 32900], 40.00th=[ 39584], 50.00th=[ 44827], 60.00th=[ 55313], | 70.00th=[ 63701], 80.00th=[ 73925], 90.00th=[ 93848], 95.00th=[112722], | 99.00th=[179307], 99.50th=[187696], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 21, max= 348, per=25.85%, avg=168.53, stdev=65.17, samples=70 iops : min= 1, max= 21, avg= 9.71, stdev= 4.13, samples=70 write: IOPS=10, BW=175KiB/s (179kB/s)(6256KiB/35849msec); 0 zone resets clat (usec): min=1762, max=190283, avg=42077.23, stdev=39984.12 lat (usec): min=1765, max=190285, avg=42079.75, stdev=39984.06 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 8], | 30.00th=[ 12], 40.00th=[ 20], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 55], 80.00th=[ 73], 90.00th=[ 97], 95.00th=[ 126], | 99.00th=[ 171], 99.50th=[ 184], 99.90th=[ 190], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 31, max= 446, per=25.64%, avg=175.87, stdev=78.95, samples=70 iops : min= 1, max= 27, avg=10.17, stdev= 5.00, samples=70 lat (usec) : 100=5.21%, 250=1.04% lat (msec) : 2=0.65%, 4=4.04%, 10=8.72%, 20=9.38%, 50=33.07% lat (msec) : 100=29.17%, 250=8.72% cpu : usr=0.06%, sys=5.09%, ctx=1703, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=652KiB/s (668kB/s), 156KiB/s-176KiB/s (160kB/s-180kB/s), io=23.4MiB (24.5MB), run=33657-36714msec WRITE: bw=686KiB/s (703kB/s), 166KiB/s-189KiB/s (170kB/s-194kB/s), io=24.6MiB (25.8MB), run=33657-36714msec rand-rw: (groupid=0, jobs=1): err= 0: pid=150172: Fri Jun 12 00:49:32 2026 read: IOPS=7, BW=124KiB/s (126kB/s)(5920KiB/47926msec) clat (msec): min=6, max=255, avg=51.37, stdev=43.88 lat (msec): min=6, max=255, avg=51.37, stdev=43.88 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 30], 50.00th=[ 38], 60.00th=[ 45], | 70.00th=[ 56], 80.00th=[ 74], 90.00th=[ 111], 95.00th=[ 150], | 99.00th=[ 209], 99.50th=[ 215], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 30, max= 572, per=25.52%, avg=127.35, stdev=91.32, samples=91 iops : min= 1, max= 35, avg= 7.12, stdev= 5.76, samples=91 write: IOPS=8, BW=133KiB/s (136kB/s)(6368KiB/47926msec); 0 zone resets clat (msec): min=15, max=339, avg=71.39, stdev=49.62 lat (msec): min=15, max=339, avg=71.39, stdev=49.62 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 81], 80.00th=[ 101], 90.00th=[ 138], 95.00th=[ 171], | 99.00th=[ 253], 99.50th=[ 326], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 31, max= 382, per=25.81%, avg=135.48, stdev=75.54, samples=92 iops : min= 1, max= 23, avg= 7.63, stdev= 4.77, samples=92 lat (msec) : 10=1.04%, 20=9.24%, 50=44.14%, 100=28.91%, 250=16.02% lat (msec) : 500=0.65% cpu : usr=0.06%, sys=1.90%, ctx=1233, 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=150173: Fri Jun 12 00:49:32 2026 read: IOPS=7, BW=120KiB/s (123kB/s)(5744KiB/47914msec) clat (msec): min=6, max=358, avg=50.45, stdev=43.46 lat (msec): min=6, max=358, avg=50.45, stdev=43.46 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 56], 80.00th=[ 73], 90.00th=[ 108], 95.00th=[ 134], | 99.00th=[ 201], 99.50th=[ 275], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 508, per=24.48%, avg=122.14, stdev=83.75, samples=92 iops : min= 1, max= 31, avg= 6.79, stdev= 5.27, samples=92 write: IOPS=8, BW=137KiB/s (140kB/s)(6544KiB/47914msec); 0 zone resets clat (msec): min=12, max=297, avg=72.66, stdev=49.29 lat (msec): min=12, max=297, avg=72.66, stdev=49.29 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 57], 60.00th=[ 71], | 70.00th=[ 86], 80.00th=[ 108], 90.00th=[ 142], 95.00th=[ 176], | 99.00th=[ 241], 99.50th=[ 259], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 442, per=26.21%, avg=137.59, stdev=78.82, samples=93 iops : min= 1, max= 27, avg= 7.76, stdev= 4.98, samples=93 lat (msec) : 10=0.65%, 20=9.64%, 50=44.53%, 100=27.99%, 250=16.54% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=2.07%, ctx=1227, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150174: Fri Jun 12 00:49:32 2026 read: IOPS=8, BW=131KiB/s (134kB/s)(6256KiB/47894msec) clat (msec): min=7, max=256, avg=50.78, stdev=44.24 lat (msec): min=7, max=256, avg=50.78, stdev=44.24 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 52], 80.00th=[ 68], 90.00th=[ 107], 95.00th=[ 155], | 99.00th=[ 218], 99.50th=[ 251], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 31, max= 477, per=26.86%, avg=134.04, stdev=90.86, samples=92 iops : min= 1, max= 29, avg= 7.54, stdev= 5.72, samples=92 write: IOPS=7, BW=126KiB/s (129kB/s)(6032KiB/47894msec); 0 zone resets clat (msec): min=15, max=256, avg=73.53, stdev=47.26 lat (msec): min=15, max=256, avg=73.54, stdev=47.27 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 37], | 30.00th=[ 42], 40.00th=[ 47], 50.00th=[ 57], 60.00th=[ 71], | 70.00th=[ 88], 80.00th=[ 112], 90.00th=[ 146], 95.00th=[ 167], | 99.00th=[ 224], 99.50th=[ 251], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 30, max= 379, per=24.23%, avg=127.18, stdev=76.55, samples=93 iops : min= 1, max= 23, avg= 7.12, stdev= 4.83, samples=93 lat (msec) : 10=0.78%, 20=8.59%, 50=47.14%, 100=26.30%, 250=16.67% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.95%, ctx=1203, 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=150175: Fri Jun 12 00:49:32 2026 read: IOPS=7, BW=126KiB/s (129kB/s)(6032KiB/47827msec) clat (msec): min=9, max=269, avg=52.70, stdev=43.49 lat (msec): min=9, max=269, avg=52.70, stdev=43.49 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 38], 60.00th=[ 44], | 70.00th=[ 57], 80.00th=[ 77], 90.00th=[ 115], 95.00th=[ 142], | 99.00th=[ 226], 99.50th=[ 245], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 411, per=26.71%, avg=133.28, stdev=77.79, samples=89 iops : min= 1, max= 25, avg= 7.49, stdev= 4.92, samples=89 write: IOPS=8, BW=131KiB/s (134kB/s)(6256KiB/47827msec); 0 zone resets clat (msec): min=14, max=298, avg=70.36, stdev=46.01 lat (msec): min=14, max=298, avg=70.37, stdev=46.01 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 41], 40.00th=[ 50], 50.00th=[ 56], 60.00th=[ 67], | 70.00th=[ 83], 80.00th=[ 101], 90.00th=[ 140], 95.00th=[ 169], | 99.00th=[ 218], 99.50th=[ 226], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 540, per=24.95%, avg=131.01, stdev=85.04, samples=94 iops : min= 1, max= 33, avg= 7.35, stdev= 5.37, samples=94 lat (msec) : 10=0.26%, 20=8.59%, 50=44.27%, 100=29.95%, 250=16.67% lat (msec) : 500=0.26% cpu : usr=0.07%, sys=1.88%, ctx=1251, 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=500KiB/s (512kB/s), 120KiB/s-131KiB/s (123kB/s-134kB/s), io=23.4MiB (24.5MB), run=47827-47926msec WRITE: bw=526KiB/s (538kB/s), 126KiB/s-137KiB/s (129kB/s-140kB/s), io=24.6MiB (25.8MB), run=47827-47926msec 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=150188: Fri Jun 12 00:49:49 2026 read: IOPS=1, BW=1106KiB/s (1133kB/s)(7168KiB/6481msec) clat (usec): min=571, max=4231.7k, avg=755733.19, stdev=1535046.57 lat (usec): min=572, max=4231.7k, avg=755735.19, stdev=1535046.48 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], | 20.00th=[ 164627], 30.00th=[ 196084], 40.00th=[ 196084], | 50.00th=[ 198181], 60.00th=[ 248513], 70.00th=[ 248513], | 80.00th=[ 250610], 90.00th=[4244636], 95.00th=[4244636], | 99.00th=[4244636], 99.50th=[4244636], 99.90th=[4244636], | 99.95th=[4244636], 99.99th=[4244636] bw ( KiB/s): min= 1828, max= 6071, per=100.00%, avg=3814.00, stdev=2134.44, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=0, BW=790KiB/s (809kB/s)(5120KiB/6481msec); 0 zone resets clat (msec): min=151, max=336, avg=219.29, stdev=73.85 lat (msec): min=151, max=339, avg=220.13, stdev=75.32 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 194], 60.00th=[ 194], | 70.00th=[ 245], 80.00th=[ 245], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 1828, max= 3938, per=59.45%, avg=2596.33, stdev=1166.00, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=66.67%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=9.07%, ctx=528, 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=150189: Fri Jun 12 00:49:49 2026 read: IOPS=0, BW=312KiB/s (319kB/s)(2048KiB/6565msec) clat (msec): min=247, max=251, avg=249.45, stdev= 3.02 lat (msec): min=247, max=251, avg=249.45, stdev= 3.03 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 251], | 70.00th=[ 251], 80.00th=[ 251], 90.00th=[ 251], 95.00th=[ 251], | 99.00th=[ 251], 99.50th=[ 251], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 1526, max= 2000, per=56.52%, avg=1763.00, stdev=335.17, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1560KiB/s (1597kB/s)(10.0MiB/6565msec); 0 zone resets clat (msec): min=138, max=2766, avg=582.87, stdev=801.65 lat (msec): min=138, max=2770, avg=583.45, stdev=802.68 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 144], | 30.00th=[ 161], 40.00th=[ 243], 50.00th=[ 251], 60.00th=[ 262], | 70.00th=[ 384], 80.00th=[ 625], 90.00th=[ 852], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 1828, max= 4079, per=58.58%, avg=2558.14, stdev=986.70, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.19%, ctx=153, 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=150190: Fri Jun 12 00:49:49 2026 read: IOPS=0, BW=1004KiB/s (1028kB/s)(6144KiB/6122msec) clat (usec): min=882, max=184780, avg=59317.00, stdev=88943.63 lat (usec): min=883, max=184782, avg=59320.49, stdev=88946.40 clat percentiles (usec): | 1.00th=[ 881], 5.00th=[ 881], 10.00th=[ 881], 20.00th=[ 1106], | 30.00th=[ 1106], 40.00th=[ 2147], 50.00th=[ 2147], 60.00th=[ 4228], | 70.00th=[162530], 80.00th=[162530], 90.00th=[185598], 95.00th=[185598], | 99.00th=[185598], 99.50th=[185598], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 1969, max= 8175, per=100.00%, avg=5072.00, stdev=4388.30, samples=2 iops : min= 1, max= 7, avg= 4.00, stdev= 4.24, samples=2 write: IOPS=0, BW=1004KiB/s (1028kB/s)(6144KiB/6122msec); 0 zone resets clat (msec): min=157, max=3079, avg=929.90, stdev=1125.13 lat (msec): min=157, max=3079, avg=933.08, stdev=1125.87 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 262], 50.00th=[ 262], 60.00th=[ 735], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 3071], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min= 1969, max= 4087, per=70.65%, avg=3085.33, stdev=1063.65, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 4=8.33%, 10=8.33%, 250=33.33%, 500=8.33% lat (msec) : 750=8.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=6.81%, ctx=138, 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=150191: Fri Jun 12 00:49:49 2026 read: IOPS=0, BW=923KiB/s (945kB/s)(5120KiB/5547msec) clat (usec): min=817, max=225953, avg=105115.36, stdev=102068.42 lat (usec): min=819, max=225954, avg=105117.07, stdev=102068.23 clat percentiles (usec): | 1.00th=[ 816], 5.00th=[ 816], 10.00th=[ 816], 20.00th=[ 816], | 30.00th=[ 3097], 40.00th=[ 3097], 50.00th=[114820], 60.00th=[114820], | 70.00th=[181404], 80.00th=[181404], 90.00th=[225444], 95.00th=[225444], | 99.00th=[225444], 99.50th=[225444], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1292KiB/s (1323kB/s)(7168KiB/5547msec); 0 zone resets clat (msec): min=204, max=2930, avg=710.24, stdev=1003.18 lat (msec): min=204, max=2930, avg=710.50, stdev=1003.17 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 253], 40.00th=[ 253], 50.00th=[ 255], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 827], 90.00th=[ 2937], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 1572, max= 5873, per=72.27%, avg=3156.00, stdev=2363.77, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 250=41.67%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=8.69%, ctx=140, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3120KiB/s (3194kB/s), 312KiB/s-1106KiB/s (319kB/s-1133kB/s), io=20.0MiB (20.0MB), run=5547-6565msec WRITE: bw=4367KiB/s (4472kB/s), 790KiB/s-1560KiB/s (809kB/s-1597kB/s), io=28.0MiB (29.4MB), run=5547-6565msec rand-rw: (groupid=0, jobs=1): err= 0: pid=150192: Fri Jun 12 00:49:49 2026 read: IOPS=0, BW=1009KiB/s (1033kB/s)(7168KiB/7104msec) clat (msec): min=61, max=3315, avg=809.55, stdev=1170.29 lat (msec): min=61, max=3315, avg=809.55, stdev=1170.29 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 72], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 296], 60.00th=[ 718], | 70.00th=[ 718], 80.00th=[ 1099], 90.00th=[ 3306], 95.00th=[ 3306], | 99.00th=[ 3306], 99.50th=[ 3306], 99.90th=[ 3306], 99.95th=[ 3306], | 99.99th=[ 3306] bw ( KiB/s): min= 1756, max= 4071, per=85.54%, avg=2465.25, stdev=1077.61, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=721KiB/s (738kB/s)(5120KiB/7104msec); 0 zone resets clat (msec): min=96, max=467, avg=273.27, stdev=151.06 lat (msec): min=96, max=467, avg=273.40, stdev=151.05 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 300], 60.00th=[ 300], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 2011, max= 2031, per=50.07%, avg=2021.00, stdev=14.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 100=25.00%, 250=16.67%, 500=33.33%, 750=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.03%, sys=2.69%, ctx=73, 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=150193: Fri Jun 12 00:49:49 2026 read: IOPS=0, BW=298KiB/s (305kB/s)(2048KiB/6883msec) clat (msec): min=75, max=493, avg=284.63, stdev=295.74 lat (msec): min=75, max=493, avg=284.64, stdev=295.74 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 77], 40.00th=[ 77], 50.00th=[ 77], 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= 2035, max= 2039, per=70.68%, avg=2037.00, stdev= 2.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1488KiB/s (1523kB/s)(10.0MiB/6883msec); 0 zone resets clat (msec): min=104, max=2560, avg=610.10, stdev=712.34 lat (msec): min=104, max=2560, avg=610.22, stdev=712.35 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 123], | 30.00th=[ 236], 40.00th=[ 334], 50.00th=[ 397], 60.00th=[ 550], | 70.00th=[ 567], 80.00th=[ 609], 90.00th=[ 625], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 1984, max= 4071, per=64.22%, avg=2592.00, stdev=983.85, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=33.33%, >=2000=8.33% cpu : usr=0.01%, sys=3.24%, ctx=100, 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=150194: Fri Jun 12 00:49:49 2026 read: IOPS=0, BW=897KiB/s (919kB/s)(6144KiB/6848msec) clat (msec): min=87, max=352, avg=200.90, stdev=124.60 lat (msec): min=87, max=352, avg=200.90, stdev=124.60 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 93], | 30.00th=[ 93], 40.00th=[ 95], 50.00th=[ 95], 60.00th=[ 249], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 1996, max= 6107, per=100.00%, avg=3379.33, stdev=2362.31, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=0, BW=897KiB/s (919kB/s)(6144KiB/6848msec); 0 zone resets clat (msec): min=75, max=2896, avg=901.87, stdev=1069.71 lat (msec): min=76, max=2896, avg=902.06, stdev=1069.70 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 110], | 30.00th=[ 110], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 625], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 1996, max= 4079, per=60.24%, avg=2431.20, stdev=921.30, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=33.33%, 250=16.67%, 500=25.00%, 750=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.28%, ctx=73, 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=150195: Fri Jun 12 00:49:49 2026 read: IOPS=0, BW=729KiB/s (747kB/s)(5120KiB/7020msec) clat (msec): min=91, max=493, avg=201.97, stdev=166.89 lat (msec): min=91, max=493, avg=201.97, stdev=166.89 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 92], | 30.00th=[ 93], 40.00th=[ 93], 50.00th=[ 163], 60.00th=[ 163], | 70.00th=[ 169], 80.00th=[ 169], 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= 4071, max= 4096, per=100.00%, avg=4083.50, stdev=17.68, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=0, BW=1021KiB/s (1046kB/s)(7168KiB/7020msec); 0 zone resets clat (msec): min=179, max=2851, avg=823.70, stdev=976.63 lat (msec): min=179, max=2851, avg=823.81, stdev=976.64 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 188], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 355], 60.00th=[ 527], | 70.00th=[ 527], 80.00th=[ 1318], 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= 1984, max= 2039, per=49.88%, avg=2013.00, stdev=23.95, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.96%, ctx=99, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2883KiB/s (2952kB/s), 298KiB/s-1009KiB/s (305kB/s-1033kB/s), io=20.0MiB (20.0MB), run=6848-7104msec WRITE: bw=4036KiB/s (4133kB/s), 721KiB/s-1488KiB/s (738kB/s-1523kB/s), io=28.0MiB (29.4MB), run=6848-7104msec 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=150203: Fri Jun 12 00:50:04 2026 read: IOPS=1, BW=4592KiB/s (4702kB/s)(12.0MiB/2676msec) clat (msec): min=445, max=1112, avg=866.09, stdev=366.37 lat (msec): min=445, max=1112, avg=866.09, stdev=366.38 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 1045], 50.00th=[ 1045], 60.00th=[ 1045], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 8047, max= 8078, per=100.00%, avg=8062.50, stdev=21.92, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=12.19%, ctx=639, 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=150204: Fri Jun 12 00:50:04 2026 read: IOPS=0, BW=1053KiB/s (1079kB/s)(4096KiB/3889msec) clat (nsec): min=653352k, max=653352k, avg=653351860.00, stdev= 0.00 lat (nsec): min=653355k, max=653355k, avg=653354530.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 651], 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= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2106KiB/s (2157kB/s)(8192KiB/3889msec); 0 zone resets clat (msec): min=1403, max=1693, avg=1548.66, stdev=205.17 lat (msec): min=1404, max=1694, avg=1549.21, stdev=205.22 clat percentiles (msec): | 1.00th=[ 1401], 5.00th=[ 1401], 10.00th=[ 1401], 20.00th=[ 1401], | 30.00th=[ 1401], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 1687], | 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= 8047, max= 8047, per=95.51%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.03%, sys=5.22%, ctx=133, 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=150205: Fri Jun 12 00:50:04 2026 write: IOPS=0, BW=3864KiB/s (3957kB/s)(12.0MiB/3180msec); 0 zone resets clat (msec): min=207, max=1541, avg=1021.72, stdev=714.11 lat (msec): min=207, max=1543, avg=1022.65, stdev=714.61 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8110, max= 8175, per=96.65%, avg=8142.50, stdev=45.96, 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=3.30%, ctx=43, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150206: Fri Jun 12 00:50:04 2026 write: IOPS=0, BW=4007KiB/s (4103kB/s)(12.0MiB/3067msec); 0 zone resets clat (msec): min=305, max=1672, avg=994.81, stdev=683.85 lat (msec): min=305, max=1675, avg=995.83, stdev=684.72 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 8175, max= 8175, per=97.03%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.10%, sys=4.60%, ctx=46, 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=4213KiB/s (4314kB/s), 1053KiB/s-4592KiB/s (1079kB/s-4702kB/s), io=16.0MiB (16.8MB), run=2676-3889msec WRITE: bw=8426KiB/s (8628kB/s), 2106KiB/s-4007KiB/s (2157kB/s-4103kB/s), io=32.0MiB (33.6MB), run=3067-3889msec rand-rw: (groupid=0, jobs=1): err= 0: pid=150207: Fri Jun 12 00:50:04 2026 read: IOPS=1, BW=4147KiB/s (4247kB/s)(12.0MiB/2963msec) clat (msec): min=768, max=1302, avg=965.58, stdev=293.42 lat (msec): min=768, max=1302, avg=965.59, stdev=293.42 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.38%, ctx=64, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150208: Fri Jun 12 00:50:04 2026 read: IOPS=0, BW=1091KiB/s (1117kB/s)(4096KiB/3756msec) clat (nsec): min=1714.8M, max=1714.8M, avg=1714824990.00, stdev= 0.00 lat (nsec): min=1714.8M, max=1714.8M, avg=1714827740.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1720], 5.00th=[ 1720], 10.00th=[ 1720], 20.00th=[ 1720], | 30.00th=[ 1720], 40.00th=[ 1720], 50.00th=[ 1720], 60.00th=[ 1720], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2181KiB/s (2233kB/s)(8192KiB/3756msec); 0 zone resets clat (msec): min=800, max=1071, avg=935.96, stdev=191.83 lat (msec): min=802, max=1072, avg=937.18, stdev=191.03 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 1070], | 70.00th=[ 1070], 80.00th=[ 1070], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 8078, max= 8078, per=92.60%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.42%, ctx=52, 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=150209: Fri Jun 12 00:50:04 2026 write: IOPS=0, BW=3453KiB/s (3536kB/s)(12.0MiB/3559msec); 0 zone resets clat (msec): min=187, max=1905, avg=1113.06, stdev=866.82 lat (msec): min=187, max=1906, avg=1113.72, stdev=867.25 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 8159, max= 8159, per=93.52%, avg=8159.00, 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=3.43%, ctx=53, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150210: Fri Jun 12 00:50:04 2026 write: IOPS=0, BW=3513KiB/s (3597kB/s)(12.0MiB/3498msec); 0 zone resets clat (msec): min=185, max=1794, avg=1094.01, stdev=823.98 lat (msec): min=186, max=1794, avg=1094.45, stdev=823.99 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 8159, max= 8159, per=93.52%, avg=8159.00, 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=0.06%, sys=3.83%, ctx=55, 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=4362KiB/s (4467kB/s), 1091KiB/s-4147KiB/s (1117kB/s-4247kB/s), io=16.0MiB (16.8MB), run=2963-3756msec WRITE: bw=8724KiB/s (8934kB/s), 2181KiB/s-3513KiB/s (2233kB/s-3597kB/s), io=32.0MiB (33.6MB), run=3498-3756msec