== sanity test 398b: DIO and buffer IO race ============== 23:08:50 (1788836930) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.61665 s, 9.0 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=179270: Mon Sep 7 23:11:00 2026 read: IOPS=13, BW=53.3KiB/s (54.6kB/s)(5992KiB/112450msec) clat (usec): min=43, max=991684, avg=41464.58, stdev=37314.27 lat (usec): min=43, max=991685, avg=41467.71, stdev=37314.55 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 8225], 10.00th=[ 14484], 20.00th=[ 19792], | 30.00th=[ 24249], 40.00th=[ 28443], 50.00th=[ 34341], 60.00th=[ 41157], | 70.00th=[ 48497], 80.00th=[ 60031], 90.00th=[ 76022], 95.00th=[ 94897], | 99.00th=[135267], 99.50th=[177210], 99.90th=[238027], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 120, per=24.81%, avg=52.84, stdev=22.60, samples=220 iops : min= 1, max= 30, avg=12.58, stdev= 5.72, samples=220 write: IOPS=13, BW=55.0KiB/s (57.3kB/s)(6296KiB/112450msec); 0 zone resets clat (usec): min=709, max=216328, avg=31691.71, stdev=33669.79 lat (usec): min=710, max=216328, avg=31693.52, stdev=33669.81 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1172], 10.00th=[ 1287], 20.00th=[ 2900], | 30.00th=[ 6521], 40.00th=[ 15401], 50.00th=[ 22676], 60.00th=[ 30802], | 70.00th=[ 40109], 80.00th=[ 53740], 90.00th=[ 74974], 95.00th=[ 98042], | 99.00th=[152044], 99.50th=[177210], 99.90th=[208667], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 7, max= 158, per=25.07%, avg=55.91, stdev=25.36, samples=219 iops : min= 1, max= 39, avg=13.34, stdev= 6.38, samples=219 lat (usec) : 50=0.13%, 100=1.89%, 250=0.20%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.23% lat (msec) : 2=8.17%, 4=3.91%, 10=5.92%, 20=13.18%, 50=40.98% lat (msec) : 100=21.03%, 250=4.23%, 1000=0.03% cpu : usr=0.08%, sys=4.87%, ctx=6279, 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=179273: Mon Sep 7 23:11:00 2026 read: IOPS=13, BW=52.9KiB/s (54.1kB/s)(5940KiB/112375msec) clat (usec): min=37, max=266546, avg=41209.93, stdev=27784.99 lat (usec): min=37, max=266547, avg=41213.87, stdev=27792.77 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 8848], 10.00th=[ 14353], 20.00th=[ 19792], | 30.00th=[ 24511], 40.00th=[ 29754], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 49021], 80.00th=[ 58983], 90.00th=[ 76022], 95.00th=[ 92799], | 99.00th=[130548], 99.50th=[158335], 99.90th=[189793], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 5, max= 118, per=24.70%, avg=52.62, stdev=20.48, samples=220 iops : min= 1, max= 29, avg=12.52, stdev= 5.15, samples=220 write: IOPS=14, BW=56.5KiB/s (57.8kB/s)(6348KiB/112375msec); 0 zone resets clat (usec): min=702, max=976388, avg=31917.65, stdev=41636.62 lat (usec): min=703, max=976389, avg=31919.50, stdev=41637.04 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1139], 10.00th=[ 1237], 20.00th=[ 2573], | 30.00th=[ 5604], 40.00th=[ 12518], 50.00th=[ 22152], 60.00th=[ 30540], | 70.00th=[ 39584], 80.00th=[ 55313], 90.00th=[ 77071], 95.00th=[ 98042], | 99.00th=[158335], 99.50th=[185598], 99.90th=[274727], 99.95th=[977273], | 99.99th=[977273] bw ( KiB/s): min= 7, max= 143, per=25.17%, avg=56.14, stdev=25.42, samples=220 iops : min= 1, max= 35, avg=13.40, stdev= 6.40, samples=220 lat (usec) : 50=0.33%, 100=1.73%, 250=0.07%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.49% lat (msec) : 2=8.56%, 4=4.04%, 10=6.28%, 20=12.66%, 50=40.10% lat (msec) : 100=21.19%, 250=4.30%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=4.83%, ctx=6248, 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=179275: Mon Sep 7 23:11:00 2026 read: IOPS=13, BW=54.3KiB/s (55.6kB/s)(6028KiB/110988msec) clat (usec): min=33, max=944270, avg=41250.21, stdev=36726.82 lat (usec): min=33, max=944271, avg=41251.56, stdev=36726.82 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 143], 10.00th=[ 14091], 20.00th=[ 20055], | 30.00th=[ 24773], 40.00th=[ 29492], 50.00th=[ 34341], 60.00th=[ 41157], | 70.00th=[ 49021], 80.00th=[ 58983], 90.00th=[ 76022], 95.00th=[ 89654], | 99.00th=[133694], 99.50th=[154141], 99.90th=[362808], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 5, max= 104, per=25.34%, avg=53.98, stdev=19.80, samples=217 iops : min= 1, max= 26, avg=12.85, stdev= 5.00, samples=217 write: IOPS=14, BW=56.4KiB/s (57.8kB/s)(6260KiB/110988msec); 0 zone resets clat (usec): min=797, max=310794, avg=30892.37, stdev=33013.70 lat (usec): min=798, max=310796, avg=30893.81, stdev=33013.71 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1172], 10.00th=[ 1336], 20.00th=[ 2900], | 30.00th=[ 5997], 40.00th=[ 13435], 50.00th=[ 22414], 60.00th=[ 29492], | 70.00th=[ 39060], 80.00th=[ 53740], 90.00th=[ 74974], 95.00th=[ 94897], | 99.00th=[139461], 99.50th=[154141], 99.90th=[246416], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 158, per=25.22%, avg=56.24, stdev=24.39, samples=216 iops : min= 1, max= 39, avg=13.43, stdev= 6.14, samples=216 lat (usec) : 50=0.62%, 100=1.73%, 250=0.16%, 500=0.03%, 1000=0.33% lat (msec) : 2=7.55%, 4=4.95%, 10=6.58%, 20=11.39%, 50=41.21% lat (msec) : 100=21.65%, 250=3.68%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=4.90%, ctx=6276, 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=179276: Mon Sep 7 23:11:00 2026 read: IOPS=13, BW=54.4KiB/s (55.7kB/s)(6052KiB/111176msec) clat (usec): min=37, max=1070.6k, avg=40891.29, stdev=36796.32 lat (usec): min=37, max=1070.6k, avg=40892.75, stdev=36796.13 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 9503], 10.00th=[ 14746], | 20.00th=[ 20055], 30.00th=[ 25560], 40.00th=[ 30278], | 50.00th=[ 35390], 60.00th=[ 41157], 70.00th=[ 48497], | 80.00th=[ 57410], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[ 120062], 99.50th=[ 160433], 99.90th=[ 217056], | 99.95th=[1069548], 99.99th=[1069548] bw ( KiB/s): min= 11, max= 127, per=25.45%, avg=54.22, stdev=20.32, samples=218 iops : min= 2, max= 31, avg=12.91, stdev= 5.11, samples=218 write: IOPS=14, BW=56.1KiB/s (57.4kB/s)(6236KiB/111176msec); 0 zone resets clat (usec): min=741, max=294484, avg=31325.65, stdev=32970.46 lat (usec): min=743, max=294486, avg=31332.09, stdev=32975.37 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1156], 10.00th=[ 1254], 20.00th=[ 2737], | 30.00th=[ 5866], 40.00th=[ 13173], 50.00th=[ 21365], 60.00th=[ 31327], | 70.00th=[ 42730], 80.00th=[ 57410], 90.00th=[ 76022], 95.00th=[ 93848], | 99.00th=[135267], 99.50th=[170918], 99.90th=[198181], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 165, per=24.96%, avg=55.67, stdev=23.00, samples=218 iops : min= 1, max= 41, avg=13.29, stdev= 5.80, samples=218 lat (usec) : 50=0.29%, 100=1.60%, 250=0.26%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.23% lat (msec) : 2=8.14%, 4=4.49%, 10=6.38%, 20=12.60%, 50=39.94% lat (msec) : 100=22.88%, 250=3.03%, 500=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.87%, ctx=6227, 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=214KiB/s (219kB/s), 52.9KiB/s-54.4KiB/s (54.1kB/s-55.7kB/s), io=23.4MiB (24.6MB), run=110988-112450msec WRITE: bw=224KiB/s (229kB/s), 55.0KiB/s-56.5KiB/s (57.3kB/s-57.8kB/s), io=24.6MiB (25.7MB), run=110988-112450msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179269: Mon Sep 7 23:11:36 2026 read: IOPS=10, BW=40.3KiB/s (41.2kB/s)(5992KiB/148753msec) clat (msec): min=4, max=1006, avg=39.32, stdev=43.85 lat (msec): min=4, max=1006, avg=39.32, stdev=43.85 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 57], 90.00th=[ 87], 95.00th=[ 114], | 99.00th=[ 184], 99.50th=[ 209], 99.90th=[ 275], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 151, per=25.17%, avg=40.52, stdev=28.06, samples=288 iops : min= 1, max= 37, avg= 9.47, stdev= 7.05, samples=288 write: IOPS=10, BW=42.3KiB/s (43.3kB/s)(6296KiB/148753msec); 0 zone resets clat (msec): min=9, max=310, avg=56.78, stdev=40.46 lat (msec): min=9, max=310, avg=56.78, stdev=40.46 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 65], 80.00th=[ 82], 90.00th=[ 113], 95.00th=[ 140], | 99.00th=[ 197], 99.50th=[ 220], 99.90th=[ 300], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 135, per=25.08%, avg=42.14, stdev=26.21, samples=291 iops : min= 1, max= 33, avg= 9.87, stdev= 6.58, samples=291 lat (msec) : 10=3.55%, 20=18.42%, 50=44.92%, 100=22.92%, 250=9.90% lat (msec) : 500=0.26%, 2000=0.03% cpu : usr=0.06%, sys=1.66%, ctx=4639, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179271: Mon Sep 7 23:11:36 2026 read: IOPS=9, BW=39.9KiB/s (40.9kB/s)(5940KiB/148793msec) clat (msec): min=4, max=1073, avg=38.17, stdev=43.45 lat (msec): min=4, max=1073, avg=38.17, stdev=43.45 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 41], 80.00th=[ 55], 90.00th=[ 86], 95.00th=[ 105], | 99.00th=[ 167], 99.50th=[ 199], 99.90th=[ 351], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 143, per=25.12%, avg=40.44, stdev=28.25, samples=286 iops : min= 1, max= 35, avg= 9.46, stdev= 7.10, samples=286 write: IOPS=10, BW=42.7KiB/s (43.7kB/s)(6348KiB/148793msec); 0 zone resets clat (msec): min=8, max=368, avg=57.72, stdev=41.62 lat (msec): min=8, max=368, avg=57.73, stdev=41.62 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 66], 80.00th=[ 85], 90.00th=[ 114], 95.00th=[ 142], | 99.00th=[ 203], 99.50th=[ 230], 99.90th=[ 321], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7, max= 127, per=25.35%, avg=42.58, stdev=25.90, samples=290 iops : min= 1, max= 31, avg= 9.99, stdev= 6.49, samples=290 lat (msec) : 10=3.06%, 20=18.85%, 50=44.82%, 100=23.08%, 250=9.90% lat (msec) : 500=0.26%, 2000=0.03% cpu : usr=0.05%, sys=1.77%, ctx=4733, 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=179272: Mon Sep 7 23:11:36 2026 read: IOPS=10, BW=40.6KiB/s (41.6kB/s)(6028KiB/148344msec) clat (msec): min=4, max=384, avg=37.69, stdev=36.65 lat (msec): min=4, max=384, avg=37.70, stdev=36.65 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 82], 95.00th=[ 110], | 99.00th=[ 194], 99.50th=[ 215], 99.90th=[ 351], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 160, per=25.47%, avg=41.01, stdev=27.47, samples=286 iops : min= 1, max= 40, avg= 9.60, stdev= 6.90, samples=286 write: IOPS=10, BW=42.2KiB/s (43.2kB/s)(6260KiB/148344msec); 0 zone resets clat (msec): min=8, max=1111, avg=58.19, stdev=49.78 lat (msec): min=8, max=1111, avg=58.20, stdev=49.77 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 54], | 70.00th=[ 67], 80.00th=[ 85], 90.00th=[ 112], 95.00th=[ 138], | 99.00th=[ 209], 99.50th=[ 253], 99.90th=[ 384], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 151, per=25.19%, avg=42.33, stdev=26.97, samples=288 iops : min= 1, max= 37, avg= 9.93, stdev= 6.78, samples=288 lat (msec) : 10=3.52%, 20=18.98%, 50=44.76%, 100=23.01%, 250=9.34% lat (msec) : 500=0.36%, 2000=0.03% cpu : usr=0.07%, sys=1.75%, ctx=4685, 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=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=179274: Mon Sep 7 23:11:36 2026 read: IOPS=10, BW=40.8KiB/s (41.8kB/s)(6052KiB/148185msec) clat (msec): min=5, max=383, avg=38.02, stdev=35.31 lat (msec): min=5, max=383, avg=38.03, stdev=35.30 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 85], 95.00th=[ 112], | 99.00th=[ 167], 99.50th=[ 192], 99.90th=[ 284], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 151, per=25.94%, avg=41.77, stdev=27.82, samples=283 iops : min= 1, max= 37, avg= 9.78, stdev= 6.98, samples=283 write: IOPS=10, BW=42.1KiB/s (43.1kB/s)(6236KiB/148185msec); 0 zone resets clat (msec): min=8, max=1105, avg=57.84, stdev=49.01 lat (msec): min=8, max=1105, avg=57.85, stdev=49.01 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 67], 80.00th=[ 84], 90.00th=[ 111], 95.00th=[ 133], | 99.00th=[ 232], 99.50th=[ 257], 99.90th=[ 309], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 151, per=24.86%, avg=41.76, stdev=26.30, samples=291 iops : min= 1, max= 37, avg= 9.78, stdev= 6.61, samples=291 lat (msec) : 10=3.52%, 20=19.37%, 50=43.72%, 100=23.31%, 250=9.67% lat (msec) : 500=0.39%, 2000=0.03% cpu : usr=0.05%, sys=1.66%, ctx=4528, 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=161KiB/s (165kB/s), 39.9KiB/s-40.8KiB/s (40.9kB/s-41.8kB/s), io=23.4MiB (24.6MB), run=148185-148793msec WRITE: bw=169KiB/s (173kB/s), 42.1KiB/s-42.7KiB/s (43.1kB/s-43.7kB/s), io=24.6MiB (25.7MB), run=148185-148793msec 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=179317: Mon Sep 7 23:12:21 2026 read: IOPS=11, BW=182KiB/s (186kB/s)(5920KiB/32612msec) clat (usec): min=39, max=305122, avg=49321.27, stdev=35688.82 lat (usec): min=40, max=305123, avg=49336.49, stdev=35690.42 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 68], 10.00th=[ 13829], 20.00th=[ 23725], | 30.00th=[ 30802], 40.00th=[ 36963], 50.00th=[ 42730], 60.00th=[ 50070], | 70.00th=[ 61080], 80.00th=[ 72877], 90.00th=[ 88605], 95.00th=[108528], | 99.00th=[164627], 99.50th=[221250], 99.90th=[304088], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 31, max= 413, per=24.68%, avg=181.16, stdev=70.43, samples=64 iops : min= 1, max= 25, avg=10.56, stdev= 4.45, samples=64 write: IOPS=12, BW=195KiB/s (200kB/s)(6368KiB/32612msec); 0 zone resets clat (usec): min=1358, max=208909, avg=35855.54, stdev=36560.25 lat (usec): min=1359, max=208910, avg=35862.94, stdev=36562.42 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1778], 10.00th=[ 2606], 20.00th=[ 4686], | 30.00th=[ 9241], 40.00th=[ 16188], 50.00th=[ 25297], 60.00th=[ 34341], | 70.00th=[ 45876], 80.00th=[ 63701], 90.00th=[ 86508], 95.00th=[102237], | 99.00th=[177210], 99.50th=[193987], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 480, per=25.33%, avg=195.55, stdev=87.57, samples=64 iops : min= 1, max= 30, avg=11.48, stdev= 5.57, samples=64 lat (usec) : 50=0.39%, 100=3.78%, 250=0.52% lat (msec) : 2=3.26%, 4=6.12%, 10=6.77%, 20=9.90%, 50=36.07% lat (msec) : 100=27.60%, 250=5.47%, 500=0.13% cpu : usr=0.06%, sys=4.71%, ctx=1586, 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=179318: Mon Sep 7 23:12:21 2026 read: IOPS=11, BW=179KiB/s (184kB/s)(5744KiB/32049msec) clat (usec): min=45, max=265773, avg=47881.85, stdev=31776.31 lat (usec): min=46, max=265775, avg=47883.07, stdev=31776.31 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 71], 10.00th=[ 16057], 20.00th=[ 24773], | 30.00th=[ 30802], 40.00th=[ 36439], 50.00th=[ 43254], 60.00th=[ 49021], | 70.00th=[ 57934], 80.00th=[ 70779], 90.00th=[ 86508], 95.00th=[ 96994], | 99.00th=[145753], 99.50th=[185598], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 30, max= 369, per=24.80%, avg=182.05, stdev=76.56, samples=62 iops : min= 1, max= 23, avg=10.61, stdev= 4.85, samples=62 write: IOPS=12, BW=204KiB/s (209kB/s)(6544KiB/32049msec); 0 zone resets clat (usec): min=1447, max=224375, avg=35589.97, stdev=35791.46 lat (usec): min=1448, max=224377, avg=35592.80, stdev=35790.92 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1745], 10.00th=[ 2057], 20.00th=[ 5342], | 30.00th=[ 10814], 40.00th=[ 18220], 50.00th=[ 25822], 60.00th=[ 35390], | 70.00th=[ 43779], 80.00th=[ 59507], 90.00th=[ 82314], 95.00th=[102237], | 99.00th=[179307], 99.50th=[189793], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 31, max= 608, per=26.39%, avg=203.71, stdev=99.80, samples=63 iops : min= 1, max= 38, avg=11.97, stdev= 6.37, samples=63 lat (usec) : 50=0.52%, 100=2.60%, 250=0.26%, 750=0.13% lat (msec) : 2=5.21%, 4=3.26%, 10=7.42%, 20=9.64%, 50=39.19% lat (msec) : 100=27.08%, 250=4.56%, 500=0.13% cpu : usr=0.07%, sys=5.44%, ctx=1629, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179319: Mon Sep 7 23:12:21 2026 read: IOPS=12, BW=193KiB/s (197kB/s)(6256KiB/32444msec) clat (usec): min=33, max=227978, avg=46841.32, stdev=34007.14 lat (usec): min=33, max=227979, avg=46843.00, stdev=34007.32 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 63], 10.00th=[ 108], 20.00th=[ 21627], | 30.00th=[ 27395], 40.00th=[ 34866], 50.00th=[ 40633], 60.00th=[ 50070], | 70.00th=[ 59507], 80.00th=[ 71828], 90.00th=[ 87557], 95.00th=[102237], | 99.00th=[177210], 99.50th=[183501], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 61, max= 509, per=26.24%, avg=192.62, stdev=81.62, samples=63 iops : min= 3, max= 31, avg=11.27, stdev= 5.14, samples=63 write: IOPS=11, BW=186KiB/s (190kB/s)(6032KiB/32444msec); 0 zone resets clat (usec): min=1084, max=278478, avg=36668.37, stdev=39404.77 lat (usec): min=1086, max=278481, avg=36679.31, stdev=39399.05 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1778], 10.00th=[ 2114], 20.00th=[ 5014], | 30.00th=[ 8455], 40.00th=[ 13042], 50.00th=[ 23725], 60.00th=[ 35914], | 70.00th=[ 46400], 80.00th=[ 61080], 90.00th=[ 94897], 95.00th=[119014], | 99.00th=[156238], 99.50th=[200279], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 31, max= 382, per=23.76%, avg=183.46, stdev=79.78, samples=63 iops : min= 1, max= 23, avg=10.70, stdev= 5.07, samples=63 lat (usec) : 50=0.26%, 100=4.69%, 250=0.78%, 750=0.13% lat (msec) : 2=4.43%, 4=3.91%, 10=8.72%, 20=9.11%, 50=33.98% lat (msec) : 100=26.95%, 250=6.90%, 500=0.13% cpu : usr=0.06%, sys=4.79%, ctx=1628, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179320: Mon Sep 7 23:12:21 2026 read: IOPS=11, BW=185KiB/s (190kB/s)(6032KiB/32544msec) clat (usec): min=37, max=196401, avg=49425.55, stdev=32890.34 lat (usec): min=38, max=196402, avg=49472.74, stdev=32832.83 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 1205], 20.00th=[ 25297], | 30.00th=[ 32637], 40.00th=[ 39060], 50.00th=[ 45876], 60.00th=[ 52691], | 70.00th=[ 58459], 80.00th=[ 69731], 90.00th=[ 89654], 95.00th=[116917], | 99.00th=[154141], 99.50th=[179307], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 31, max= 381, per=25.64%, avg=188.22, stdev=65.05, samples=63 iops : min= 1, max= 23, avg=11.00, stdev= 4.13, samples=63 write: IOPS=12, BW=192KiB/s (197kB/s)(6256KiB/32544msec); 0 zone resets clat (usec): min=1232, max=207637, avg=34641.47, stdev=35328.86 lat (usec): min=1234, max=207638, avg=34644.22, stdev=35328.36 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1745], 10.00th=[ 1942], 20.00th=[ 4228], | 30.00th=[ 7046], 40.00th=[ 14746], 50.00th=[ 24249], 60.00th=[ 33162], | 70.00th=[ 44303], 80.00th=[ 61080], 90.00th=[ 84411], 95.00th=[105382], | 99.00th=[145753], 99.50th=[183501], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 508, per=24.98%, avg=192.83, stdev=88.07, samples=64 iops : min= 1, max= 31, avg=11.30, stdev= 5.55, samples=64 lat (usec) : 50=0.13%, 100=4.56%, 500=0.13% lat (msec) : 2=5.47%, 4=4.04%, 10=8.20%, 20=7.94%, 50=33.98% lat (msec) : 100=29.30%, 250=6.25% cpu : usr=0.04%, sys=4.88%, ctx=1622, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=734KiB/s (752kB/s), 179KiB/s-193KiB/s (184kB/s-197kB/s), io=23.4MiB (24.5MB), run=32049-32612msec WRITE: bw=773KiB/s (791kB/s), 186KiB/s-204KiB/s (190kB/s-209kB/s), io=24.6MiB (25.8MB), run=32049-32612msec fio: pid=179325, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=179322: Mon Sep 7 23:12:36 2026 read: IOPS=7, BW=127KiB/s (130kB/s)(5920KiB/46549msec) clat (msec): min=7, max=310, avg=54.57, stdev=44.72 lat (msec): min=7, max=310, avg=54.57, stdev=44.72 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 59], 80.00th=[ 78], 90.00th=[ 109], 95.00th=[ 150], | 99.00th=[ 264], 99.50th=[ 296], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 30, max= 351, per=27.38%, avg=129.25, stdev=71.84, samples=89 iops : min= 1, max= 21, avg= 7.25, stdev= 4.49, samples=89 write: IOPS=8, BW=137KiB/s (140kB/s)(6368KiB/46549msec); 0 zone resets clat (msec): min=14, max=266, avg=66.03, stdev=41.70 lat (msec): min=14, max=266, avg=66.04, stdev=41.72 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 54], 60.00th=[ 64], | 70.00th=[ 75], 80.00th=[ 91], 90.00th=[ 123], 95.00th=[ 153], | 99.00th=[ 211], 99.50th=[ 253], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 23, max= 381, per=27.25%, avg=136.52, stdev=73.87, samples=91 iops : min= 1, max= 23, avg= 7.71, stdev= 4.65, samples=91 lat (msec) : 10=0.39%, 20=6.90%, 50=45.05%, 100=33.72%, 250=13.15% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.66%, ctx=1258, 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=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=179323: Mon Sep 7 23:12:36 2026 read: IOPS=7, BW=122KiB/s (125kB/s)(5744KiB/46956msec) clat (msec): min=7, max=312, avg=51.58, stdev=44.62 lat (msec): min=7, max=312, avg=51.58, stdev=44.62 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 70], 90.00th=[ 113], 95.00th=[ 146], | 99.00th=[ 255], 99.50th=[ 305], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 23, max= 352, per=26.60%, avg=125.57, stdev=74.83, samples=89 iops : min= 1, max= 22, avg= 7.01, stdev= 4.73, samples=89 write: IOPS=8, BW=139KiB/s (143kB/s)(6544KiB/46956msec); 0 zone resets clat (msec): min=13, max=260, avg=69.35, stdev=46.78 lat (msec): min=13, max=260, avg=69.35, stdev=46.78 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 57], 60.00th=[ 65], | 70.00th=[ 78], 80.00th=[ 97], 90.00th=[ 138], 95.00th=[ 174], | 99.00th=[ 228], 99.50th=[ 241], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 351, per=27.87%, avg=139.60, stdev=73.96, samples=91 iops : min= 1, max= 21, avg= 7.90, stdev= 4.64, samples=91 lat (msec) : 10=0.78%, 20=9.38%, 50=43.62%, 100=30.86%, 250=14.71% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=1.60%, ctx=1275, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179324: Mon Sep 7 23:12:36 2026 read: IOPS=8, BW=133KiB/s (137kB/s)(6256KiB/46880msec) clat (msec): min=6, max=302, avg=53.06, stdev=41.42 lat (msec): min=6, max=302, avg=53.07, stdev=41.42 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 34], 50.00th=[ 40], 60.00th=[ 48], | 70.00th=[ 59], 80.00th=[ 77], 90.00th=[ 114], 95.00th=[ 150], | 99.00th=[ 190], 99.50th=[ 203], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 30, max= 414, per=28.62%, avg=135.09, stdev=84.85, samples=91 iops : min= 1, max= 25, avg= 7.62, stdev= 5.32, samples=91 write: IOPS=8, BW=129KiB/s (132kB/s)(6032KiB/46880msec); 0 zone resets clat (msec): min=16, max=300, avg=69.12, stdev=44.87 lat (msec): min=16, max=300, avg=69.13, stdev=44.87 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 66], | 70.00th=[ 79], 80.00th=[ 97], 90.00th=[ 127], 95.00th=[ 157], | 99.00th=[ 239], 99.50th=[ 253], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 287, per=25.50%, avg=127.74, stdev=65.73, samples=92 iops : min= 1, max= 17, avg= 7.15, stdev= 4.15, samples=92 lat (msec) : 10=0.78%, 20=8.33%, 50=44.27%, 100=30.60%, 250=15.63% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=1.57%, ctx=1247, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=179325: Mon Sep 7 23:12:36 2026 read: IOPS=6, BW=110KiB/s (113kB/s)(4288KiB/38858msec) clat (msec): min=10, max=309, avg=60.73, stdev=43.05 lat (msec): min=10, max=309, avg=60.73, stdev=43.04 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 40], 50.00th=[ 48], 60.00th=[ 62], | 70.00th=[ 73], 80.00th=[ 91], 90.00th=[ 115], 95.00th=[ 144], | 99.00th=[ 194], 99.50th=[ 249], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 30, max= 255, per=23.75%, avg=112.09, stdev=57.78, samples=75 iops : min= 1, max= 15, avg= 6.17, stdev= 3.67, samples=75 write: IOPS=7, BW=119KiB/s (122kB/s)(4624KiB/38858msec); 0 zone resets clat (msec): min=17, max=352, avg=77.87, stdev=46.60 lat (msec): min=17, max=352, avg=77.87, stdev=46.60 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 28], 10.00th=[ 33], 20.00th=[ 39], | 30.00th=[ 46], 40.00th=[ 59], 50.00th=[ 67], 60.00th=[ 81], | 70.00th=[ 92], 80.00th=[ 108], 90.00th=[ 148], 95.00th=[ 169], | 99.00th=[ 236], 99.50th=[ 239], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 347, per=23.72%, avg=118.86, stdev=69.31, samples=76 iops : min= 1, max= 21, avg= 6.61, stdev= 4.33, samples=76 lat (msec) : 20=4.30%, 50=39.43%, 100=36.38%, 250=19.35%, 500=0.36% cpu : usr=0.04%, sys=1.36%, ctx=787, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=269,289,0,0 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=473KiB/s (484kB/s), 110KiB/s-133KiB/s (113kB/s-137kB/s), io=21.7MiB (22.7MB), run=38858-46956msec WRITE: bw=502KiB/s (514kB/s), 119KiB/s-139KiB/s (122kB/s-143kB/s), io=23.0MiB (24.1MB), run=38858-46956msec 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=179343: Mon Sep 7 23:12:55 2026 read: IOPS=1, BW=1436KiB/s (1471kB/s)(7168KiB/4990msec) clat (usec): min=1948, max=2603.7k, avg=484700.32, stdev=938851.88 lat (usec): min=1949, max=2603.7k, avg=484701.85, stdev=938851.73 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 1942], 10.00th=[ 1942], | 20.00th=[ 3556], 30.00th=[ 185598], 40.00th=[ 185598], | 50.00th=[ 185598], 60.00th=[ 198181], 70.00th=[ 198181], | 80.00th=[ 212861], 90.00th=[2600469], 95.00th=[2600469], | 99.00th=[2600469], 99.50th=[2600469], 99.90th=[2600469], | 99.95th=[2600469], 99.99th=[2600469] bw ( KiB/s): min= 1622, max= 4047, per=86.23%, avg=2425.75, stdev=1096.82, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1026KiB/s (1051kB/s)(5120KiB/4990msec); 0 zone resets clat (msec): min=212, max=409, avg=307.73, stdev=87.63 lat (msec): min=212, max=409, avg=307.82, stdev=87.65 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 220], 40.00th=[ 220], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 2003, max= 2031, per=51.16%, avg=2015.00, stdev=14.42, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (msec) : 2=8.33%, 4=8.33%, 250=50.00%, 500=25.00%, >=2000=8.33% cpu : usr=0.04%, sys=8.64%, ctx=440, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179344: Mon Sep 7 23:12:55 2026 read: IOPS=0, BW=281KiB/s (288kB/s)(2048KiB/7278msec) clat (msec): min=2, max=180, avg=91.05, stdev=125.91 lat (msec): min=2, max=180, avg=91.05, stdev=125.91 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 3], | 30.00th=[ 3], 40.00th=[ 3], 50.00th=[ 3], 60.00th=[ 180], | 70.00th=[ 180], 80.00th=[ 180], 90.00th=[ 180], 95.00th=[ 180], | 99.00th=[ 180], 99.50th=[ 180], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 1617, max= 2015, per=64.56%, avg=1816.00, stdev=281.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1407KiB/s (1441kB/s)(10.0MiB/7278msec); 0 zone resets clat (msec): min=177, max=2676, avg=671.94, stdev=733.59 lat (msec): min=177, max=2676, avg=672.12, stdev=733.57 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 268], | 30.00th=[ 284], 40.00th=[ 317], 50.00th=[ 393], 60.00th=[ 498], | 70.00th=[ 584], 80.00th=[ 701], 90.00th=[ 827], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 1932, max= 4015, per=67.75%, avg=2668.50, stdev=1040.47, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 4=8.33%, 250=16.67%, 500=41.67%, 750=16.67%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=7.50%, ctx=142, 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=179345: Mon Sep 7 23:12:55 2026 read: IOPS=0, BW=1000KiB/s (1025kB/s)(6144KiB/6141msec) clat (usec): min=487, max=344161, avg=94180.96, stdev=147533.63 lat (usec): min=489, max=344162, avg=94182.21, stdev=147533.63 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[ 4948], 50.00th=[ 4948], 60.00th=[ 6325], | 70.00th=[208667], 80.00th=[208667], 90.00th=[346031], 95.00th=[346031], | 99.00th=[346031], 99.50th=[346031], 99.90th=[346031], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 1845, max= 4007, per=87.79%, avg=2469.50, stdev=1028.06, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=1000KiB/s (1025kB/s)(6144KiB/6141msec); 0 zone resets clat (msec): min=149, max=2955, avg=868.49, stdev=1042.70 lat (msec): min=149, max=2955, avg=868.58, stdev=1042.70 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 477], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 2970], 95.00th=[ 2970], | 99.00th=[ 2970], 99.50th=[ 2970], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] bw ( KiB/s): min= 2003, max= 4096, per=64.26%, avg=2531.25, stdev=1043.18, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 10=16.67%, 250=16.67%, 500=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.84%, ctx=104, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179346: Mon Sep 7 23:12:55 2026 read: IOPS=0, BW=722KiB/s (739kB/s)(5120KiB/7092msec) clat (usec): min=785, max=499147, avg=205659.48, stdev=210572.96 lat (usec): min=786, max=499149, avg=205660.65, stdev=210573.04 clat percentiles (usec): | 1.00th=[ 783], 5.00th=[ 783], 10.00th=[ 783], 20.00th=[ 783], | 30.00th=[ 1004], 40.00th=[ 1004], 50.00th=[246416], 60.00th=[246416], | 70.00th=[283116], 80.00th=[283116], 90.00th=[501220], 95.00th=[501220], | 99.00th=[501220], 99.50th=[501220], 99.90th=[501220], 99.95th=[501220], | 99.99th=[501220] bw ( KiB/s): min= 3690, max= 4031, per=100.00%, avg=3860.50, stdev=241.12, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=1011KiB/s (1035kB/s)(7168KiB/7092msec); 0 zone resets clat (msec): min=236, max=2868, avg=807.69, stdev=946.29 lat (msec): min=236, max=2868, avg=807.78, stdev=946.29 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 305], | 30.00th=[ 355], 40.00th=[ 355], 50.00th=[ 405], 60.00th=[ 456], | 70.00th=[ 456], 80.00th=[ 1036], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 2011, max= 4007, per=75.72%, avg=2982.50, stdev=1102.08, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 250=16.67%, 500=50.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.31%, ctx=220, 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=2814KiB/s (2881kB/s), 281KiB/s-1436KiB/s (288kB/s-1471kB/s), io=20.0MiB (20.0MB), run=4990-7278msec WRITE: bw=3940KiB/s (4034kB/s), 1000KiB/s-1407KiB/s (1025kB/s-1441kB/s), io=28.0MiB (29.4MB), run=4990-7278msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179339: Mon Sep 7 23:12:55 2026 read: IOPS=0, BW=946KiB/s (968kB/s)(7168KiB/7579msec) clat (msec): min=100, max=2599, avg=821.47, stdev=970.57 lat (msec): min=100, max=2599, avg=821.47, stdev=970.57 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 144], | 30.00th=[ 163], 40.00th=[ 163], 50.00th=[ 188], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 1636], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 1723, max= 4079, per=89.91%, avg=2423.00, stdev=1111.60, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=676KiB/s (692kB/s)(5120KiB/7579msec); 0 zone resets clat (msec): min=182, max=626, avg=295.66, stdev=187.66 lat (msec): min=182, max=626, avg=295.79, stdev=187.69 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 232], 60.00th=[ 232], | 70.00th=[ 255], 80.00th=[ 255], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 2039, max= 4023, per=71.65%, avg=2703.33, stdev=1142.87, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 250=58.33%, 500=8.33%, 750=8.33%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.03%, sys=2.77%, ctx=88, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179340: Mon Sep 7 23:12:55 2026 read: IOPS=0, BW=284KiB/s (291kB/s)(2048KiB/7201msec) clat (msec): min=122, max=314, avg=218.91, stdev=135.84 lat (msec): min=122, max=314, avg=218.91, stdev=135.84 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 124], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 1689, max= 1851, per=65.68%, avg=1770.00, stdev=114.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1422KiB/s (1456kB/s)(10.0MiB/7201msec); 0 zone resets clat (msec): min=101, max=2778, avg=660.10, stdev=799.22 lat (msec): min=101, max=2782, avg=660.82, stdev=800.36 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 103], | 30.00th=[ 169], 40.00th=[ 338], 50.00th=[ 376], 60.00th=[ 460], | 70.00th=[ 523], 80.00th=[ 709], 90.00th=[ 1045], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 1851, max= 4071, per=71.06%, avg=2681.17, stdev=1066.79, samples=6 iops : min= 1, max= 3, avg= 1.83, stdev= 0.98, samples=6 lat (msec) : 250=33.33%, 500=33.33%, 750=16.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.07%, sys=2.31%, ctx=74, 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=179341: Mon Sep 7 23:12:55 2026 read: IOPS=0, BW=809KiB/s (828kB/s)(6144KiB/7599msec) clat (msec): min=73, max=546, avg=338.27, stdev=206.33 lat (msec): min=73, max=546, avg=338.27, stdev=206.33 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 253], 50.00th=[ 253], 60.00th=[ 498], | 70.00th=[ 514], 80.00th=[ 514], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1723, max= 2048, per=70.88%, avg=1910.25, stdev=152.07, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 write: IOPS=0, BW=809KiB/s (828kB/s)(6144KiB/7599msec); 0 zone resets clat (msec): min=91, max=4023, avg=912.61, stdev=1539.86 lat (msec): min=91, max=4024, avg=912.98, stdev=1539.76 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 132], | 30.00th=[ 132], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 388], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 4010], 95.00th=[ 4010], | 99.00th=[ 4010], 99.50th=[ 4010], 99.90th=[ 4010], 99.95th=[ 4010], | 99.99th=[ 4010] bw ( KiB/s): min= 1723, max= 3126, per=59.21%, avg=2234.00, stdev=613.57, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 750=25.00%, >=2000=8.33% cpu : usr=0.03%, sys=2.72%, ctx=88, 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=179342: Mon Sep 7 23:12:55 2026 read: IOPS=0, BW=762KiB/s (780kB/s)(5120KiB/6722msec) clat (msec): min=162, max=763, avg=330.68, stdev=258.39 lat (msec): min=162, max=763, avg=330.68, stdev=258.39 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 180], 60.00th=[ 180], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 3447, max= 3703, per=100.00%, avg=3575.00, stdev=181.02, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1066KiB/s (1092kB/s)(7168KiB/6722msec); 0 zone resets clat (msec): min=159, max=2907, avg=687.58, stdev=1013.69 lat (msec): min=159, max=2907, avg=687.68, stdev=1013.71 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 163], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 203], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 894], 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= 1572, max= 4071, per=64.28%, avg=2425.25, stdev=1118.15, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=58.33%, 500=16.67%, 1000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.43%, ctx=74, 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=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=2695KiB/s (2760kB/s), 284KiB/s-946KiB/s (291kB/s-968kB/s), io=20.0MiB (20.0MB), run=6722-7599msec WRITE: bw=3773KiB/s (3864kB/s), 676KiB/s-1422KiB/s (692kB/s-1456kB/s), io=28.0MiB (29.4MB), run=6722-7599msec 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=179353: Mon Sep 7 23:13:11 2026 read: IOPS=1, BW=5109KiB/s (5232kB/s)(12.0MiB/2405msec) clat (msec): min=733, max=873, avg=786.78, stdev=75.92 lat (msec): min=733, max=873, avg=786.78, stdev=75.92 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 8078, max= 8175, per=100.00%, avg=8126.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=12.06%, ctx=451, 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=179354: Mon Sep 7 23:13:11 2026 read: IOPS=0, BW=1370KiB/s (1403kB/s)(4096KiB/2990msec) clat (nsec): min=735834k, max=735834k, avg=735834120.00, stdev= 0.00 lat (nsec): min=735837k, max=735837k, avg=735836986.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 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=2740KiB/s (2806kB/s)(8192KiB/2990msec); 0 zone resets clat (msec): min=733, max=1489, avg=1111.83, stdev=534.73 lat (msec): min=735, max=1490, avg=1112.65, stdev=533.88 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 1485], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 7406, max= 7406, per=74.27%, avg=7406.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.82%, ctx=168, 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=179355: Mon Sep 7 23:13:11 2026 write: IOPS=0, BW=3999KiB/s (4095kB/s)(12.0MiB/3073msec); 0 zone resets clat (msec): min=393, max=1722, avg=934.50, stdev=698.45 lat (msec): min=393, max=1723, avg=937.25, stdev=697.32 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 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= 7406, max= 8078, per=77.64%, avg=7742.00, stdev=475.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.10%, sys=3.45%, ctx=49, 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=179356: Mon Sep 7 23:13:11 2026 write: IOPS=0, BW=3740KiB/s (3829kB/s)(12.0MiB/3286msec); 0 zone resets clat (msec): min=638, max=1932, avg=1077.29, stdev=740.35 lat (msec): min=641, max=1934, avg=1079.04, stdev=741.12 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 1938], 80.00th=[ 1938], 90.00th=[ 1938], 95.00th=[ 1938], | 99.00th=[ 1938], 99.50th=[ 1938], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 5688, max= 8110, per=69.18%, avg=6899.00, stdev=1712.61, 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=1.95%, ctx=18, 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=5480KiB/s (5611kB/s), 1370KiB/s-5109KiB/s (1403kB/s-5232kB/s), io=16.0MiB (16.8MB), run=2405-2990msec WRITE: bw=9972KiB/s (10.2MB/s), 2740KiB/s-3999KiB/s (2806kB/s-4095kB/s), io=32.0MiB (33.6MB), run=2990-3286msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179357: Mon Sep 7 23:13:11 2026 read: IOPS=0, BW=3349KiB/s (3430kB/s)(12.0MiB/3669msec) clat (msec): min=143, max=2534, avg=1161.66, stdev=1234.14 lat (msec): min=143, max=2534, avg=1161.66, stdev=1234.14 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 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= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.13%, ctx=39, 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=179358: Mon Sep 7 23:13:11 2026 read: IOPS=0, BW=1196KiB/s (1225kB/s)(4096KiB/3424msec) clat (nsec): min=767864k, max=767864k, avg=767864380.00, stdev= 0.00 lat (nsec): min=767867k, max=767867k, avg=767866502.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 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 write: IOPS=0, BW=2393KiB/s (2450kB/s)(8192KiB/3424msec); 0 zone resets clat (msec): min=856, max=1729, avg=1293.00, stdev=617.51 lat (msec): min=856, max=1730, avg=1293.41, stdev=617.51 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 1737], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 8175, max= 8175, per=85.55%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.36%, ctx=91, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179359: Mon Sep 7 23:13:11 2026 write: IOPS=0, BW=3584KiB/s (3670kB/s)(12.0MiB/3429msec); 0 zone resets clat (msec): min=269, max=2303, avg=1070.82, stdev=1083.75 lat (msec): min=270, max=2304, avg=1071.35, stdev=1083.81 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 2299], 80.00th=[ 2299], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 8175, max= 8192, per=85.64%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.47%, ctx=45, 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=179360: Mon Sep 7 23:13:11 2026 write: IOPS=0, BW=3795KiB/s (3886kB/s)(12.0MiB/3238msec); 0 zone resets clat (msec): min=933, max=1125, avg=1045.22, stdev=99.96 lat (msec): min=933, max=1128, avg=1046.63, stdev=101.19 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 8143, max= 8175, per=85.38%, avg=8159.00, stdev=22.63, 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=2.38%, ctx=45, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4466KiB/s (4573kB/s), 1196KiB/s-3349KiB/s (1225kB/s-3430kB/s), io=16.0MiB (16.8MB), run=3424-3669msec WRITE: bw=9556KiB/s (9785kB/s), 2393KiB/s-3795KiB/s (2450kB/s-3886kB/s), io=32.0MiB (33.6MB), run=3238-3429msec