== sanity test 398b: DIO and buffer IO race ============== 15:52:18 (1789069938) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.87536 s, 7.3 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=144287: Thu Sep 10 15:55:07 2026 read: IOPS=10, BW=41.3KiB/s (42.3kB/s)(5992KiB/145165msec) clat (usec): min=38, max=835949, avg=48053.68, stdev=41569.66 lat (usec): min=38, max=835950, avg=48055.57, stdev=41569.62 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 71], 10.00th=[ 10028], 20.00th=[ 21890], | 30.00th=[ 28705], 40.00th=[ 34341], 50.00th=[ 41157], 60.00th=[ 50070], | 70.00th=[ 57410], 80.00th=[ 71828], 90.00th=[ 88605], 95.00th=[106431], | 99.00th=[149947], 99.50th=[189793], 99.90th=[566232], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 7, max= 95, per=25.40%, avg=41.15, stdev=17.47, samples=283 iops : min= 1, max= 23, avg= 9.61, stdev= 4.40, samples=283 write: IOPS=10, BW=43.4KiB/s (44.4kB/s)(6296KiB/145165msec); 0 zone resets clat (usec): min=1020, max=468714, avg=46154.02, stdev=47338.77 lat (usec): min=1021, max=468716, avg=46162.24, stdev=47336.48 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1450], 10.00th=[ 2474], 20.00th=[ 5407], | 30.00th=[ 10683], 40.00th=[ 22152], 50.00th=[ 34341], 60.00th=[ 46400], | 70.00th=[ 60031], 80.00th=[ 80217], 90.00th=[110625], 95.00th=[133694], | 99.00th=[200279], 99.50th=[233833], 99.90th=[421528], 99.95th=[467665], | 99.99th=[467665] bw ( KiB/s): min= 7, max= 127, per=25.43%, avg=43.23, stdev=20.20, samples=283 iops : min= 1, max= 31, avg=10.14, stdev= 5.10, samples=283 lat (usec) : 50=0.13%, 100=4.00%, 250=0.42%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.39%, 4=3.55%, 10=7.19%, 20=8.37%, 50=33.30% lat (msec) : 100=28.84%, 250=9.31%, 500=0.29%, 750=0.03%, 1000=0.03% cpu : usr=0.09%, sys=4.73%, ctx=6775, 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=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=144290: Thu Sep 10 15:55:07 2026 read: IOPS=10, BW=40.3KiB/s (41.3kB/s)(5940KiB/147384msec) clat (usec): min=35, max=353096, avg=48753.56, stdev=34440.43 lat (usec): min=35, max=353099, avg=48760.10, stdev=34442.24 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 77], 10.00th=[ 13698], 20.00th=[ 22938], | 30.00th=[ 28967], 40.00th=[ 35914], 50.00th=[ 42206], 60.00th=[ 50070], | 70.00th=[ 60031], 80.00th=[ 71828], 90.00th=[ 92799], 95.00th=[110625], | 99.00th=[152044], 99.50th=[162530], 99.90th=[329253], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 5, max= 102, per=24.71%, avg=40.04, stdev=18.14, samples=288 iops : min= 1, max= 25, avg= 9.34, stdev= 4.57, samples=288 write: IOPS=10, BW=43.1KiB/s (44.1kB/s)(6348KiB/147384msec); 0 zone resets clat (usec): min=1038, max=776311, avg=46921.26, stdev=52023.00 lat (usec): min=1040, max=776314, avg=46931.83, stdev=52020.54 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1418], 10.00th=[ 2073], 20.00th=[ 4817], | 30.00th=[ 8979], 40.00th=[ 20841], 50.00th=[ 34341], 60.00th=[ 47449], | 70.00th=[ 60556], 80.00th=[ 81265], 90.00th=[110625], 95.00th=[133694], | 99.00th=[212861], 99.50th=[258999], 99.90th=[488637], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 7, max= 134, per=24.94%, avg=42.39, stdev=20.14, samples=290 iops : min= 1, max= 33, avg= 9.94, stdev= 5.07, samples=290 lat (usec) : 50=0.13%, 100=3.16%, 250=0.23%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=5.08%, 4=3.81%, 10=7.85%, 20=7.49%, 50=32.78% lat (msec) : 100=29.00%, 250=9.93%, 500=0.36%, 1000=0.03% cpu : usr=0.08%, sys=4.51%, ctx=6669, 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=144291: Thu Sep 10 15:55:07 2026 read: IOPS=10, BW=41.0KiB/s (42.0kB/s)(6028KiB/146850msec) clat (usec): min=36, max=455002, avg=47560.33, stdev=36018.85 lat (usec): min=37, max=455004, avg=47587.49, stdev=36005.20 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 71], 10.00th=[ 10159], 20.00th=[ 21890], | 30.00th=[ 28181], 40.00th=[ 33817], 50.00th=[ 40109], 60.00th=[ 49546], | 70.00th=[ 57934], 80.00th=[ 71828], 90.00th=[ 88605], 95.00th=[105382], | 99.00th=[162530], 99.50th=[185598], 99.90th=[341836], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 7, max= 95, per=25.14%, avg=40.73, stdev=19.07, samples=286 iops : min= 1, max= 23, avg= 9.50, stdev= 4.80, samples=286 write: IOPS=10, BW=42.6KiB/s (43.7kB/s)(6260KiB/146850msec); 0 zone resets clat (usec): min=1055, max=809679, avg=47625.04, stdev=50790.69 lat (usec): min=1057, max=809681, avg=47635.80, stdev=50788.86 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1434], 10.00th=[ 2474], 20.00th=[ 6259], | 30.00th=[ 11731], 40.00th=[ 24249], 50.00th=[ 35914], 60.00th=[ 47973], | 70.00th=[ 61080], 80.00th=[ 79168], 90.00th=[107480], 95.00th=[139461], | 99.00th=[210764], 99.50th=[244319], 99.90th=[417334], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 7, max= 118, per=24.88%, avg=42.30, stdev=18.53, samples=286 iops : min= 1, max= 29, avg= 9.90, stdev= 4.67, samples=286 lat (usec) : 50=0.26%, 100=3.87%, 250=0.23%, 500=0.03%, 750=0.10% lat (usec) : 1000=0.03% lat (msec) : 2=4.49%, 4=2.83%, 10=7.10%, 20=8.24%, 50=33.85% lat (msec) : 100=29.52%, 250=9.05%, 500=0.36%, 1000=0.03% cpu : usr=0.08%, sys=4.64%, ctx=6885, 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=144292: Thu Sep 10 15:55:07 2026 read: IOPS=10, BW=40.9KiB/s (41.9kB/s)(6052KiB/147802msec) clat (usec): min=34, max=931231, avg=47089.20, stdev=42771.09 lat (usec): min=34, max=931235, avg=47099.38, stdev=42774.02 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 73], 10.00th=[ 10290], 20.00th=[ 21103], | 30.00th=[ 27132], 40.00th=[ 32637], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 56361], 80.00th=[ 68682], 90.00th=[ 89654], 95.00th=[109577], | 99.00th=[162530], 99.50th=[206570], 99.90th=[505414], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 5, max= 143, per=25.33%, avg=41.03, stdev=19.87, samples=287 iops : min= 1, max= 35, avg= 9.60, stdev= 4.99, samples=287 write: IOPS=10, BW=42.2KiB/s (43.2kB/s)(6236KiB/147802msec); 0 zone resets clat (usec): min=1021, max=367666, avg=48726.36, stdev=50546.36 lat (usec): min=1022, max=367668, avg=48734.38, stdev=50542.01 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1369], 10.00th=[ 2180], 20.00th=[ 5473], | 30.00th=[ 10159], 40.00th=[ 22414], 50.00th=[ 36963], 60.00th=[ 47449], | 70.00th=[ 62129], 80.00th=[ 84411], 90.00th=[120062], 95.00th=[147850], | 99.00th=[214959], 99.50th=[256902], 99.90th=[333448], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 7, max= 118, per=24.65%, avg=41.90, stdev=18.29, samples=289 iops : min= 1, max= 29, avg= 9.82, stdev= 4.60, samples=289 lat (usec) : 50=0.20%, 100=3.68%, 250=0.46%, 500=0.13%, 1000=0.03% lat (msec) : 2=4.79%, 4=3.68%, 10=7.06%, 20=8.27%, 50=34.60% lat (msec) : 100=26.66%, 250=10.03%, 500=0.36%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=4.67%, ctx=6746, 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=162KiB/s (166kB/s), 40.3KiB/s-41.3KiB/s (41.3kB/s-42.3kB/s), io=23.4MiB (24.6MB), run=145165-147802msec WRITE: bw=170KiB/s (174kB/s), 42.2KiB/s-43.4KiB/s (43.2kB/s-44.4kB/s), io=24.6MiB (25.7MB), run=145165-147802msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144285: Thu Sep 10 15:57:26 2026 read: IOPS=5, BW=21.0KiB/s (21.5kB/s)(5992KiB/285326msec) clat (msec): min=6, max=839, avg=41.64, stdev=46.92 lat (msec): min=6, max=839, avg=41.64, stdev=46.92 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 82], 95.00th=[ 123], | 99.00th=[ 232], 99.50th=[ 268], 99.90th=[ 418], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 88, per=29.30%, avg=24.32, stdev=16.72, samples=475 iops : min= 1, max= 22, avg= 5.42, stdev= 4.24, samples=475 write: IOPS=5, BW=22.1KiB/s (22.6kB/s)(6296KiB/285326msec); 0 zone resets clat (msec): min=35, max=574, avg=141.33, stdev=71.30 lat (msec): min=35, max=574, avg=141.34, stdev=71.30 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 65], 10.00th=[ 72], 20.00th=[ 86], | 30.00th=[ 97], 40.00th=[ 110], 50.00th=[ 123], 60.00th=[ 138], | 70.00th=[ 157], 80.00th=[ 186], 90.00th=[ 241], 95.00th=[ 279], | 99.00th=[ 384], 99.50th=[ 414], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 55, per=25.24%, avg=21.95, stdev=10.42, samples=550 iops : min= 1, max= 13, avg= 4.82, stdev= 2.66, samples=550 lat (msec) : 10=2.60%, 20=13.74%, 50=21.26%, 100=24.19%, 250=33.40% lat (msec) : 500=4.69%, 750=0.10%, 1000=0.03% cpu : usr=0.05%, sys=1.18%, ctx=5473, 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=144286: Thu Sep 10 15:57:26 2026 read: IOPS=5, BW=20.7KiB/s (21.2kB/s)(5940KiB/286597msec) clat (msec): min=5, max=931, avg=41.82, stdev=48.23 lat (msec): min=5, max=931, avg=41.82, stdev=48.23 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 55], 90.00th=[ 87], 95.00th=[ 124], | 99.00th=[ 239], 99.50th=[ 266], 99.90th=[ 401], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7, max= 94, per=29.36%, avg=24.37, stdev=15.91, samples=469 iops : min= 1, max= 23, avg= 5.44, stdev= 4.02, samples=469 write: IOPS=5, BW=22.1KiB/s (22.7kB/s)(6348KiB/286597msec); 0 zone resets clat (msec): min=35, max=874, avg=141.15, stdev=73.16 lat (msec): min=35, max=874, avg=141.15, stdev=73.16 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 64], 10.00th=[ 72], 20.00th=[ 86], | 30.00th=[ 97], 40.00th=[ 108], 50.00th=[ 122], 60.00th=[ 138], | 70.00th=[ 157], 80.00th=[ 190], 90.00th=[ 239], 95.00th=[ 279], | 99.00th=[ 384], 99.50th=[ 435], 99.90th=[ 651], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 55, per=25.31%, avg=22.02, stdev=10.39, samples=552 iops : min= 1, max= 13, avg= 4.84, stdev= 2.64, samples=552 lat (msec) : 10=2.41%, 20=12.92%, 50=22.66%, 100=23.14%, 250=34.31% lat (msec) : 500=4.43%, 750=0.07%, 1000=0.07% cpu : usr=0.05%, sys=1.19%, ctx=5378, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144288: Thu Sep 10 15:57:26 2026 read: IOPS=5, BW=20.0KiB/s (21.5kB/s)(6028KiB/287196msec) clat (msec): min=5, max=409, avg=42.27, stdev=42.28 lat (msec): min=5, max=409, avg=42.27, stdev=42.28 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 58], 90.00th=[ 90], 95.00th=[ 126], | 99.00th=[ 215], 99.50th=[ 262], 99.90th=[ 359], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 7, max= 79, per=27.74%, avg=23.02, stdev=16.00, samples=504 iops : min= 1, max= 19, avg= 5.10, stdev= 4.03, samples=504 write: IOPS=5, BW=21.8KiB/s (22.3kB/s)(6260KiB/287196msec); 0 zone resets clat (msec): min=39, max=1063, avg=142.48, stdev=77.05 lat (msec): min=39, max=1063, avg=142.49, stdev=77.05 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 64], 10.00th=[ 72], 20.00th=[ 85], | 30.00th=[ 97], 40.00th=[ 109], 50.00th=[ 121], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 192], 90.00th=[ 241], 95.00th=[ 284], | 99.00th=[ 393], 99.50th=[ 481], 99.90th=[ 726], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 55, per=24.96%, avg=21.72, stdev=10.87, samples=553 iops : min= 1, max= 13, avg= 4.76, stdev= 2.77, samples=553 lat (msec) : 10=2.34%, 20=13.22%, 50=22.04%, 100=24.06%, 250=33.46% lat (msec) : 500=4.72%, 750=0.13%, 2000=0.03% cpu : usr=0.05%, sys=1.19%, ctx=5327, 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=144289: Thu Sep 10 15:57:26 2026 read: IOPS=5, BW=21.2KiB/s (21.7kB/s)(6052KiB/285589msec) clat (msec): min=5, max=407, avg=42.02, stdev=46.18 lat (msec): min=5, max=407, avg=42.02, stdev=46.18 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 87], 95.00th=[ 124], | 99.00th=[ 239], 99.50th=[ 347], 99.90th=[ 405], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 7, max= 119, per=28.94%, avg=24.02, stdev=16.54, samples=485 iops : min= 1, max= 29, avg= 5.34, stdev= 4.16, samples=485 write: IOPS=5, BW=21.8KiB/s (22.4kB/s)(6236KiB/285589msec); 0 zone resets clat (msec): min=40, max=1168, avg=142.10, stdev=75.54 lat (msec): min=40, max=1168, avg=142.11, stdev=75.54 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 73], 20.00th=[ 86], | 30.00th=[ 96], 40.00th=[ 110], 50.00th=[ 125], 60.00th=[ 140], | 70.00th=[ 161], 80.00th=[ 188], 90.00th=[ 234], 95.00th=[ 279], | 99.00th=[ 388], 99.50th=[ 435], 99.90th=[ 575], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 48, per=24.76%, avg=21.55, stdev=10.59, samples=554 iops : min= 1, max= 12, avg= 4.72, stdev= 2.70, samples=554 lat (msec) : 10=2.54%, 20=13.61%, 50=21.52%, 100=24.71%, 250=33.01% lat (msec) : 500=4.46%, 750=0.13%, 2000=0.03% cpu : usr=0.05%, sys=1.22%, ctx=5390, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=83.6KiB/s (85.6kB/s), 20.7KiB/s-21.2KiB/s (21.2kB/s-21.7kB/s), io=23.4MiB (24.6MB), run=285326-287196msec WRITE: bw=87.5KiB/s (89.6kB/s), 21.8KiB/s-22.1KiB/s (22.3kB/s-22.7kB/s), io=24.6MiB (25.7MB), run=285326-287196msec 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=144345: Thu Sep 10 15:58:12 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(5920KiB/35294msec) clat (usec): min=31, max=218559, avg=49217.75, stdev=40246.37 lat (usec): min=31, max=218560, avg=49219.13, stdev=40246.42 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 61], 10.00th=[ 69], 20.00th=[ 619], | 30.00th=[ 28443], 40.00th=[ 36439], 50.00th=[ 44827], 60.00th=[ 53216], | 70.00th=[ 62653], 80.00th=[ 73925], 90.00th=[ 99091], 95.00th=[122160], | 99.00th=[187696], 99.50th=[198181], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 62, max= 351, per=24.77%, avg=166.97, stdev=74.07, samples=69 iops : min= 3, max= 21, avg= 9.68, stdev= 4.68, samples=69 write: IOPS=11, BW=180KiB/s (185kB/s)(6368KiB/35294msec); 0 zone resets clat (usec): min=1389, max=414630, avg=42481.13, stdev=50287.69 lat (usec): min=1390, max=414633, avg=42483.46, stdev=50287.70 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1893], 10.00th=[ 3589], 20.00th=[ 6390], | 30.00th=[ 9765], 40.00th=[ 14222], 50.00th=[ 25560], 60.00th=[ 39060], | 70.00th=[ 51119], 80.00th=[ 70779], 90.00th=[103285], 95.00th=[128451], | 99.00th=[229639], 99.50th=[337642], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 31, max= 433, per=25.42%, avg=180.20, stdev=75.85, samples=69 iops : min= 1, max= 27, avg=10.54, stdev= 4.82, samples=69 lat (usec) : 50=1.17%, 100=7.29%, 250=0.78%, 500=0.26%, 750=0.13% lat (msec) : 2=2.73%, 4=3.78%, 10=9.24%, 20=9.51%, 50=28.39% lat (msec) : 100=26.43%, 250=9.90%, 500=0.39% cpu : usr=0.08%, sys=5.06%, ctx=1569, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144346: Thu Sep 10 15:58:12 2026 read: IOPS=10, BW=162KiB/s (166kB/s)(5744KiB/35513msec) clat (usec): min=43, max=257333, avg=51852.12, stdev=39320.69 lat (usec): min=43, max=257335, avg=51853.51, stdev=39320.70 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 68], 10.00th=[ 80], 20.00th=[ 22676], | 30.00th=[ 29492], 40.00th=[ 39584], 50.00th=[ 45876], 60.00th=[ 57410], | 70.00th=[ 65799], 80.00th=[ 80217], 90.00th=[103285], 95.00th=[124257], | 99.00th=[168821], 99.50th=[175113], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 30, max= 410, per=23.89%, avg=161.00, stdev=67.25, samples=69 iops : min= 1, max= 25, avg= 9.30, stdev= 4.31, samples=69 write: IOPS=11, BW=184KiB/s (189kB/s)(6544KiB/35513msec); 0 zone resets clat (usec): min=1523, max=366249, avg=40929.80, stdev=44580.20 lat (usec): min=1525, max=366250, avg=40932.71, stdev=44579.87 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2073], 10.00th=[ 3195], 20.00th=[ 6456], | 30.00th=[ 10945], 40.00th=[ 16319], 50.00th=[ 25035], 60.00th=[ 40633], | 70.00th=[ 51119], 80.00th=[ 70779], 90.00th=[ 93848], 95.00th=[117965], | 99.00th=[196084], 99.50th=[235930], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 30, max= 413, per=25.83%, avg=183.13, stdev=91.66, samples=69 iops : min= 1, max= 25, avg=10.70, stdev= 5.80, samples=69 lat (usec) : 50=0.13%, 100=6.12%, 250=0.78%, 500=0.26%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=2.47%, 4=3.52%, 10=9.51%, 20=9.11%, 50=28.91% lat (msec) : 100=29.04%, 250=9.38%, 500=0.39% cpu : usr=0.08%, sys=4.79%, ctx=1548, 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=144347: Thu Sep 10 15:58:12 2026 read: IOPS=11, BW=188KiB/s (193kB/s)(6256KiB/33274msec) clat (usec): min=37, max=284494, avg=45372.82, stdev=36617.19 lat (usec): min=37, max=284495, avg=45374.27, stdev=36617.17 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 62], 10.00th=[ 72], 20.00th=[ 12518], | 30.00th=[ 25822], 40.00th=[ 34866], 50.00th=[ 42206], 60.00th=[ 50594], | 70.00th=[ 59507], 80.00th=[ 68682], 90.00th=[ 91751], 95.00th=[105382], | 99.00th=[164627], 99.50th=[175113], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 31, max= 444, per=27.95%, avg=188.42, stdev=85.47, samples=65 iops : min= 1, max= 27, avg=11.03, stdev= 5.43, samples=65 write: IOPS=11, BW=181KiB/s (186kB/s)(6032KiB/33274msec); 0 zone resets clat (usec): min=1500, max=452992, avg=40739.05, stdev=45112.93 lat (usec): min=1501, max=452995, avg=40741.73, stdev=45112.82 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1942], 10.00th=[ 3228], 20.00th=[ 6128], | 30.00th=[ 10421], 40.00th=[ 16450], 50.00th=[ 25822], 60.00th=[ 35914], | 70.00th=[ 57410], 80.00th=[ 70779], 90.00th=[100140], 95.00th=[122160], | 99.00th=[189793], 99.50th=[206570], 99.90th=[455082], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 31, max= 381, per=25.42%, avg=180.22, stdev=81.90, samples=65 iops : min= 1, max= 23, avg=10.52, stdev= 5.20, samples=65 lat (usec) : 50=0.91%, 100=7.16%, 250=1.17%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=3.26%, 4=3.65%, 10=7.81%, 20=9.11%, 50=29.30% lat (msec) : 100=29.17%, 250=7.68%, 500=0.26% cpu : usr=0.07%, sys=5.12%, ctx=1508, 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=144348: Thu Sep 10 15:58:12 2026 read: IOPS=11, BW=176KiB/s (180kB/s)(6032KiB/34232msec) clat (usec): min=31, max=358259, avg=45681.26, stdev=42592.01 lat (usec): min=31, max=358260, avg=45686.73, stdev=42594.31 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 63], 10.00th=[ 72], 20.00th=[ 151], | 30.00th=[ 25297], 40.00th=[ 31851], 50.00th=[ 39584], 60.00th=[ 47449], | 70.00th=[ 57934], 80.00th=[ 70779], 90.00th=[ 91751], 95.00th=[119014], | 99.00th=[214959], 99.50th=[254804], 99.90th=[358613], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 31, max= 349, per=26.25%, avg=176.92, stdev=74.81, samples=66 iops : min= 1, max= 21, avg=10.32, stdev= 4.74, samples=66 write: IOPS=11, BW=183KiB/s (187kB/s)(6256KiB/34232msec); 0 zone resets clat (usec): min=1411, max=395141, avg=43099.31, stdev=50588.64 lat (usec): min=1413, max=395143, avg=43102.02, stdev=50588.76 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1991], 10.00th=[ 3490], 20.00th=[ 6325], | 30.00th=[ 9241], 40.00th=[ 16188], 50.00th=[ 26084], 60.00th=[ 37487], | 70.00th=[ 52167], 80.00th=[ 69731], 90.00th=[109577], 95.00th=[141558], | 99.00th=[270533], 99.50th=[283116], 99.90th=[396362], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 61, max= 413, per=25.79%, avg=182.87, stdev=76.90, samples=67 iops : min= 3, max= 25, avg=10.67, stdev= 4.84, samples=67 lat (usec) : 50=0.39%, 100=8.85%, 250=0.65%, 500=0.52%, 1000=0.13% lat (msec) : 2=3.12%, 4=2.86%, 10=10.42%, 20=8.72%, 50=30.21% lat (msec) : 100=24.09%, 250=9.24%, 500=0.78% cpu : usr=0.10%, sys=4.85%, ctx=1495, 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=674KiB/s (691kB/s), 162KiB/s-188KiB/s (166kB/s-193kB/s), io=23.4MiB (24.5MB), run=33274-35513msec WRITE: bw=710KiB/s (727kB/s), 180KiB/s-184KiB/s (185kB/s-189kB/s), io=24.6MiB (25.8MB), run=33274-35513msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144350: Thu Sep 10 15:58:59 2026 read: IOPS=4, BW=72.2KiB/s (73.9kB/s)(5920KiB/82002msec) clat (msec): min=8, max=303, avg=54.31, stdev=49.27 lat (msec): min=8, max=303, avg=54.31, stdev=49.27 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 45], | 70.00th=[ 55], 80.00th=[ 68], 90.00th=[ 115], 95.00th=[ 157], | 99.00th=[ 266], 99.50th=[ 300], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 30, max= 285, per=28.21%, avg=82.37, stdev=50.42, samples=141 iops : min= 1, max= 17, avg= 4.32, stdev= 3.17, samples=141 write: IOPS=4, BW=77.7KiB/s (79.5kB/s)(6368KiB/82002msec); 0 zone resets clat (msec): min=45, max=571, avg=155.36, stdev=80.81 lat (msec): min=45, max=571, avg=155.37, stdev=80.81 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 72], 10.00th=[ 82], 20.00th=[ 99], | 30.00th=[ 110], 40.00th=[ 125], 50.00th=[ 134], 60.00th=[ 150], | 70.00th=[ 174], 80.00th=[ 197], 90.00th=[ 247], 95.00th=[ 334], | 99.00th=[ 506], 99.50th=[ 550], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 28, max= 160, per=25.95%, avg=79.68, stdev=36.77, samples=157 iops : min= 1, max= 10, avg= 4.13, stdev= 2.33, samples=157 lat (msec) : 10=0.52%, 20=6.38%, 50=25.52%, 100=21.74%, 250=40.36% lat (msec) : 500=4.95%, 750=0.52% cpu : usr=0.05%, sys=1.33%, ctx=1382, 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=144351: Thu Sep 10 15:58:59 2026 read: IOPS=4, BW=70.4KiB/s (72.1kB/s)(5744KiB/81550msec) clat (msec): min=9, max=277, avg=51.62, stdev=44.06 lat (msec): min=9, max=277, avg=51.64, stdev=44.06 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 30], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 45], | 70.00th=[ 51], 80.00th=[ 64], 90.00th=[ 96], 95.00th=[ 153], | 99.00th=[ 243], 99.50th=[ 264], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 28, max= 320, per=28.92%, avg=84.46, stdev=56.04, samples=134 iops : min= 1, max= 20, avg= 4.44, stdev= 3.60, samples=134 write: IOPS=5, BW=80.2KiB/s (82.2kB/s)(6544KiB/81550msec); 0 zone resets clat (msec): min=43, max=477, avg=153.82, stdev=76.22 lat (msec): min=43, max=477, avg=153.82, stdev=76.22 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 75], 10.00th=[ 83], 20.00th=[ 94], | 30.00th=[ 106], 40.00th=[ 120], 50.00th=[ 131], 60.00th=[ 150], | 70.00th=[ 174], 80.00th=[ 203], 90.00th=[ 251], 95.00th=[ 313], | 99.00th=[ 422], 99.50th=[ 439], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 30, max= 159, per=26.59%, avg=81.64, stdev=35.73, samples=157 iops : min= 1, max= 9, avg= 4.26, stdev= 2.23, samples=157 lat (msec) : 10=0.26%, 20=5.08%, 50=27.21%, 100=22.92%, 250=38.93% lat (msec) : 500=5.60% cpu : usr=0.04%, sys=1.30%, ctx=1390, 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=144352: Thu Sep 10 15:58:59 2026 read: IOPS=4, BW=77.7KiB/s (79.6kB/s)(6256KiB/80528msec) clat (msec): min=9, max=287, avg=51.37, stdev=43.63 lat (msec): min=9, max=287, avg=51.37, stdev=43.63 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 45], | 70.00th=[ 52], 80.00th=[ 65], 90.00th=[ 105], 95.00th=[ 146], | 99.00th=[ 243], 99.50th=[ 275], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 30, max= 313, per=29.50%, avg=86.14, stdev=58.37, samples=143 iops : min= 1, max= 19, avg= 4.54, stdev= 3.68, samples=143 write: IOPS=4, BW=74.9KiB/s (76.7kB/s)(6032KiB/80528msec); 0 zone resets clat (msec): min=56, max=557, avg=160.15, stdev=78.68 lat (msec): min=56, max=557, avg=160.16, stdev=78.68 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 81], 10.00th=[ 89], 20.00th=[ 101], | 30.00th=[ 114], 40.00th=[ 125], 50.00th=[ 138], 60.00th=[ 155], | 70.00th=[ 176], 80.00th=[ 211], 90.00th=[ 251], 95.00th=[ 305], | 99.00th=[ 498], 99.50th=[ 523], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 30, max= 160, per=24.56%, avg=75.40, stdev=33.16, samples=157 iops : min= 1, max= 10, avg= 3.87, stdev= 2.10, samples=157 lat (msec) : 10=0.26%, 20=6.38%, 50=28.52%, 100=19.14%, 250=40.62% lat (msec) : 500=4.69%, 750=0.39% cpu : usr=0.05%, sys=1.40%, ctx=1465, 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=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=144353: Thu Sep 10 15:58:59 2026 read: IOPS=4, BW=74.6KiB/s (76.4kB/s)(6032KiB/80890msec) clat (msec): min=8, max=509, avg=50.77, stdev=45.09 lat (msec): min=8, max=509, avg=50.77, stdev=45.09 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 29], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 48], | 70.00th=[ 54], 80.00th=[ 65], 90.00th=[ 88], 95.00th=[ 140], | 99.00th=[ 243], 99.50th=[ 275], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 30, max= 256, per=28.97%, avg=84.60, stdev=52.01, samples=139 iops : min= 1, max= 16, avg= 4.45, stdev= 3.30, samples=139 write: IOPS=4, BW=77.3KiB/s (79.2kB/s)(6256KiB/80890msec); 0 zone resets clat (msec): min=40, max=554, avg=157.80, stdev=82.61 lat (msec): min=40, max=554, avg=157.80, stdev=82.61 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 75], 10.00th=[ 85], 20.00th=[ 100], | 30.00th=[ 109], 40.00th=[ 121], 50.00th=[ 136], 60.00th=[ 148], | 70.00th=[ 171], 80.00th=[ 201], 90.00th=[ 271], 95.00th=[ 334], | 99.00th=[ 489], 99.50th=[ 550], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 29, max= 159, per=26.26%, avg=80.61, stdev=34.98, samples=152 iops : min= 1, max= 9, avg= 4.20, stdev= 2.20, samples=152 lat (msec) : 10=0.26%, 20=7.68%, 50=24.09%, 100=23.70%, 250=37.89% lat (msec) : 500=5.86%, 750=0.52% cpu : usr=0.06%, sys=1.31%, ctx=1471, 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=292KiB/s (299kB/s), 70.4KiB/s-77.7KiB/s (72.1kB/s-79.6kB/s), io=23.4MiB (24.5MB), run=80528-82002msec WRITE: bw=307KiB/s (315kB/s), 74.9KiB/s-80.2KiB/s (76.7kB/s-82.2kB/s), io=24.6MiB (25.8MB), run=80528-82002msec 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=144380: Thu Sep 10 15:59:16 2026 read: IOPS=1, BW=1926KiB/s (1973kB/s)(7168KiB/3721msec) clat (msec): min=3, max=405, avg=272.98, stdev=134.92 lat (msec): min=3, max=405, avg=272.99, stdev=134.92 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 213], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 313], 60.00th=[ 326], | 70.00th=[ 326], 80.00th=[ 376], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 1479, max= 4055, per=54.77%, avg=2327.00, stdev=995.41, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1376KiB/s (1409kB/s)(5120KiB/3721msec); 0 zone resets clat (msec): min=222, max=763, avg=356.54, stdev=229.15 lat (msec): min=222, max=763, avg=356.62, stdev=229.14 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 268], 60.00th=[ 268], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 2027, max= 3908, per=44.70%, avg=2659.33, stdev=1081.41, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 4=8.33%, 250=25.00%, 500=58.33%, 1000=8.33% cpu : usr=0.00%, sys=14.01%, ctx=209, 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=144381: Thu Sep 10 15:59:16 2026 read: IOPS=0, BW=425KiB/s (435kB/s)(2048KiB/4819msec) clat (msec): min=3, max=168, avg=85.71, stdev=116.60 lat (msec): min=3, max=168, avg=85.71, stdev=116.61 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4], | 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 169], | 70.00th=[ 169], 80.00th=[ 169], 90.00th=[ 169], 95.00th=[ 169], | 99.00th=[ 169], 99.50th=[ 169], 99.90th=[ 169], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 1467, max= 1868, per=39.24%, avg=1667.50, stdev=283.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2125KiB/s (2176kB/s)(10.0MiB/4819msec); 0 zone resets clat (msec): min=138, max=1673, avg=463.75, stdev=484.12 lat (msec): min=138, max=1673, avg=463.92, stdev=484.17 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 150], | 30.00th=[ 167], 40.00th=[ 209], 50.00th=[ 232], 60.00th=[ 262], | 70.00th=[ 313], 80.00th=[ 684], 90.00th=[ 818], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 2007, max= 5605, per=49.72%, avg=2958.00, stdev=1530.67, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 4=8.33%, 250=50.00%, 500=16.67%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.04%, sys=10.52%, ctx=108, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144382: Thu Sep 10 15:59:16 2026 read: IOPS=1, BW=1312KiB/s (1343kB/s)(6144KiB/4683msec) clat (usec): min=644, max=311954, avg=122274.60, stdev=138935.20 lat (usec): min=646, max=311955, avg=122276.30, stdev=138935.05 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 644], 10.00th=[ 644], 20.00th=[ 725], | 30.00th=[ 725], 40.00th=[ 766], 50.00th=[ 766], 60.00th=[187696], | 70.00th=[231736], 80.00th=[231736], 90.00th=[312476], 95.00th=[312476], | 99.00th=[312476], 99.50th=[312476], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 2007, max= 4087, per=79.68%, avg=3385.67, stdev=1194.02, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1312KiB/s (1343kB/s)(6144KiB/4683msec); 0 zone resets clat (msec): min=162, max=1043, avg=657.27, stdev=312.87 lat (msec): min=162, max=1043, avg=657.35, stdev=312.85 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 651], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 1486, max= 2027, per=31.94%, avg=1900.20, stdev=233.46, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=16.67%, 1000=8.33% lat (msec) : 250=25.00%, 500=8.33%, 750=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.06%, sys=9.50%, ctx=163, 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=144383: Thu Sep 10 15:59:16 2026 read: IOPS=1, BW=1376KiB/s (1409kB/s)(5120KiB/3720msec) clat (usec): min=741, max=394068, avg=136750.87, stdev=189311.84 lat (usec): min=742, max=394070, avg=136752.29, stdev=189311.89 clat percentiles (usec): | 1.00th=[ 742], 5.00th=[ 742], 10.00th=[ 742], 20.00th=[ 742], | 30.00th=[ 1319], 40.00th=[ 1319], 50.00th=[ 2040], 60.00th=[ 2040], | 70.00th=[287310], 80.00th=[287310], 90.00th=[392168], 95.00th=[392168], | 99.00th=[392168], 99.50th=[392168], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 2043, max= 5862, per=93.02%, avg=3952.50, stdev=2700.44, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1927KiB/s (1973kB/s)(7168KiB/3720msec); 0 zone resets clat (msec): min=204, max=609, avg=432.76, stdev=163.57 lat (msec): min=204, max=609, avg=433.37, stdev=163.87 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 209], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 510], 60.00th=[ 514], | 70.00th=[ 514], 80.00th=[ 550], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1512, max= 2043, per=32.41%, avg=1928.00, stdev=232.64, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 4=8.33%, 250=16.67%, 500=25.00%, 750=33.33% cpu : usr=0.00%, sys=12.10%, 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=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=4250KiB/s (4352kB/s), 425KiB/s-1926KiB/s (435kB/s-1973kB/s), io=20.0MiB (20.0MB), run=3720-4819msec WRITE: bw=5950KiB/s (6093kB/s), 1312KiB/s-2125KiB/s (1343kB/s-2176kB/s), io=28.0MiB (29.4MB), run=3720-4819msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144375: Thu Sep 10 15:59:16 2026 read: IOPS=1, BW=1721KiB/s (1762kB/s)(7168KiB/4166msec) clat (msec): min=123, max=290, avg=162.31, stdev=59.00 lat (msec): min=123, max=290, avg=162.31, stdev=59.00 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 132], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 138], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 174], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 1868, max= 4231, per=93.38%, avg=3395.33, stdev=1324.67, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1229KiB/s (1258kB/s)(5120KiB/4166msec); 0 zone resets clat (msec): min=198, max=845, avg=586.47, stdev=291.60 lat (msec): min=198, max=845, avg=586.61, stdev=291.58 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1410, max= 2039, per=35.86%, avg=1825.25, stdev=285.86, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=58.33%, 500=16.67%, 750=8.33%, 1000=16.67% cpu : usr=0.02%, sys=3.94%, ctx=83, 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=144376: Thu Sep 10 15:59:16 2026 read: IOPS=0, BW=385KiB/s (394kB/s)(2048KiB/5322msec) clat (msec): min=122, max=364, avg=243.66, stdev=171.23 lat (msec): min=122, max=364, avg=243.67, stdev=171.23 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 123], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1395, max= 2039, per=47.22%, avg=1717.00, stdev=455.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1924KiB/s (1970kB/s)(10.0MiB/5322msec); 0 zone resets clat (msec): min=176, max=1115, avg=475.49, stdev=298.25 lat (msec): min=176, max=1116, avg=475.72, stdev=298.52 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 199], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 359], 60.00th=[ 363], | 70.00th=[ 514], 80.00th=[ 531], 90.00th=[ 860], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1741, max= 2790, per=40.64%, avg=2068.57, stdev=336.59, samples=7 iops : min= 1, max= 2, avg= 1.14, stdev= 0.38, samples=7 lat (msec) : 250=25.00%, 500=41.67%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.04%, sys=4.42%, ctx=130, 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=144377: Thu Sep 10 15:59:16 2026 read: IOPS=1, BW=1199KiB/s (1228kB/s)(6144KiB/5124msec) clat (msec): min=146, max=944, avg=380.55, stdev=306.61 lat (msec): min=146, max=944, avg=380.55, stdev=306.61 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 236], 50.00th=[ 236], 60.00th=[ 300], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1741, max= 2043, per=53.39%, avg=1941.20, stdev=133.26, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1199KiB/s (1228kB/s)(6144KiB/5124msec); 0 zone resets clat (msec): min=212, max=750, avg=468.68, stdev=232.46 lat (msec): min=212, max=750, avg=469.60, stdev=231.63 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 617], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1741, max= 2809, per=41.59%, avg=2116.80, stdev=404.82, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=41.67%, 500=16.67%, 750=25.00%, 1000=16.67% cpu : usr=0.02%, sys=2.91%, ctx=73, 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=144378: Thu Sep 10 15:59:16 2026 read: IOPS=0, BW=909KiB/s (931kB/s)(5120KiB/5632msec) clat (msec): min=74, max=739, avg=375.32, stdev=298.70 lat (msec): min=74, max=739, avg=375.32, stdev=298.70 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 75], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 642], 80.00th=[ 642], 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= 1868, max= 3482, per=67.48%, avg=2453.67, stdev=893.43, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1273KiB/s (1303kB/s)(7168KiB/5632msec); 0 zone resets clat (msec): min=211, max=1175, avg=523.84, stdev=435.72 lat (msec): min=211, max=1175, avg=524.54, stdev=435.58 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 230], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 241], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 1133], 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= 1984, max= 4015, per=54.58%, avg=2778.00, stdev=963.69, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=16.67%, 2000=16.67% cpu : usr=0.00%, sys=2.66%, ctx=63, 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=3636KiB/s (3724kB/s), 385KiB/s-1721KiB/s (394kB/s-1762kB/s), io=20.0MiB (20.0MB), run=4166-5632msec WRITE: bw=5091KiB/s (5213kB/s), 1199KiB/s-1924KiB/s (1228kB/s-1970kB/s), io=28.0MiB (29.4MB), run=4166-5632msec 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=144392: Thu Sep 10 15:59:33 2026 read: IOPS=0, BW=2983KiB/s (3054kB/s)(12.0MiB/4120msec) clat (msec): min=1052, max=1418, avg=1295.89, stdev=210.81 lat (msec): min=1052, max=1418, avg=1295.89, stdev=210.81 clat percentiles (msec): | 1.00th=[ 1053], 5.00th=[ 1053], 10.00th=[ 1053], 20.00th=[ 1053], | 30.00th=[ 1053], 40.00th=[ 1418], 50.00th=[ 1418], 60.00th=[ 1418], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8143, max= 8175, per=100.00%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=2.67%, ctx=71, 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=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=144394: Thu Sep 10 15:59:33 2026 read: IOPS=0, BW=868KiB/s (889kB/s)(4096KiB/4719msec) clat (nsec): min=3084.1M, max=3084.1M, avg=3084149507.00, stdev= 0.00 lat (nsec): min=3084.2M, max=3084.2M, avg=3084152422.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3071], 5.00th=[ 3071], 10.00th=[ 3071], 20.00th=[ 3071], | 30.00th=[ 3071], 40.00th=[ 3071], 50.00th=[ 3071], 60.00th=[ 3071], | 70.00th=[ 3071], 80.00th=[ 3071], 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= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1736KiB/s (1778kB/s)(8192KiB/4719msec); 0 zone resets clat (msec): min=308, max=896, avg=602.56, stdev=415.64 lat (msec): min=309, max=899, avg=604.50, stdev=417.33 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 894], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.99%, ctx=37, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144397: Thu Sep 10 15:59:33 2026 write: IOPS=0, BW=3350KiB/s (3430kB/s)(12.0MiB/3668msec); 0 zone resets clat (msec): min=1026, max=1303, avg=1188.09, stdev=144.30 lat (msec): min=1026, max=1303, avg=1189.02, stdev=144.49 clat percentiles (msec): | 1.00th=[ 1028], 5.00th=[ 1028], 10.00th=[ 1028], 20.00th=[ 1028], | 30.00th=[ 1028], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 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= 8078, max= 8143, per=100.00%, avg=8110.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.03%, sys=5.07%, ctx=70, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=144398: Thu Sep 10 15:59:33 2026 write: IOPS=0, BW=2904KiB/s (2974kB/s)(12.0MiB/4231msec); 0 zone resets clat (msec): min=806, max=1915, avg=1278.82, stdev=572.53 lat (msec): min=809, max=1915, avg=1280.27, stdev=571.23 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1921], 80.00th=[ 1921], 90.00th=[ 1921], 95.00th=[ 1921], | 99.00th=[ 1921], 99.50th=[ 1921], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 8078, max= 8192, per=100.00%, avg=8135.00, stdev=80.61, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.07%, ctx=66, 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=3472KiB/s (3555kB/s), 868KiB/s-2983KiB/s (889kB/s-3054kB/s), io=16.0MiB (16.8MB), run=4120-4719msec WRITE: bw=6944KiB/s (7110kB/s), 1736KiB/s-3350KiB/s (1778kB/s-3430kB/s), io=32.0MiB (33.6MB), run=3668-4719msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144391: Thu Sep 10 15:59:33 2026 read: IOPS=0, BW=3836KiB/s (3928kB/s)(12.0MiB/3203msec) clat (msec): min=917, max=1062, avg=994.67, stdev=72.90 lat (msec): min=917, max=1062, avg=994.68, stdev=72.90 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8078, max= 8159, per=100.00%, avg=8118.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=11.93%, ctx=287, 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=144393: Thu Sep 10 15:59:33 2026 read: IOPS=0, BW=1083KiB/s (1109kB/s)(4096KiB/3781msec) clat (nsec): min=920314k, max=920314k, avg=920314448.00, stdev= 0.00 lat (nsec): min=920319k, max=920319k, avg=920319332.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 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=2167KiB/s (2219kB/s)(8192KiB/3781msec); 0 zone resets clat (msec): min=624, max=1981, avg=1303.09, stdev=959.04 lat (msec): min=625, max=1981, avg=1303.59, stdev=958.79 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 1989], | 70.00th=[ 1989], 80.00th=[ 1989], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.45%, ctx=121, 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=144395: Thu Sep 10 15:59:33 2026 write: IOPS=0, BW=2585KiB/s (2647kB/s)(12.0MiB/4753msec); 0 zone resets clat (msec): min=585, max=2524, avg=1509.38, stdev=972.90 lat (msec): min=585, max=2525, avg=1511.60, stdev=972.89 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 1418], 50.00th=[ 1418], 60.00th=[ 1418], | 70.00th=[ 2534], 80.00th=[ 2534], 90.00th=[ 2534], 95.00th=[ 2534], | 99.00th=[ 2534], 99.50th=[ 2534], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 8126, max= 8192, per=100.00%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.48%, ctx=65, 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=144396: Thu Sep 10 15:59:33 2026 write: IOPS=0, BW=3070KiB/s (3143kB/s)(12.0MiB/4003msec); 0 zone resets clat (msec): min=523, max=2651, avg=1253.82, stdev=1211.15 lat (msec): min=523, max=2652, avg=1254.30, stdev=1211.10 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 2668], 80.00th=[ 2668], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 7787, max= 8175, per=100.00%, avg=7981.00, stdev=274.36, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.75%, ctx=63, 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=4333KiB/s (4437kB/s), 1083KiB/s-3836KiB/s (1109kB/s-3928kB/s), io=16.0MiB (16.8MB), run=3203-3781msec WRITE: bw=6894KiB/s (7060kB/s), 2167KiB/s-3070KiB/s (2219kB/s-3143kB/s), io=32.0MiB (33.6MB), run=3781-4753msec