== sanity test 398b: DIO and buffer IO race ============== 08:43:48 (1787834628) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.94688 s, 8.5 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 fio: pid=178313, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=178317: Thu Aug 27 08:46:02 2026 read: IOPS=13, BW=52.7KiB/s (53.9kB/s)(5992KiB/113789msec) clat (usec): min=40, max=1062.6k, avg=42021.70, stdev=39236.01 lat (usec): min=40, max=1062.7k, avg=42030.79, stdev=39240.98 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 9503], 10.00th=[ 15270], | 20.00th=[ 20317], 30.00th=[ 25035], 40.00th=[ 29754], | 50.00th=[ 34866], 60.00th=[ 40633], 70.00th=[ 48497], | 80.00th=[ 57934], 90.00th=[ 74974], 95.00th=[ 94897], | 99.00th=[ 143655], 99.50th=[ 162530], 99.90th=[ 304088], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 14, max= 120, per=25.23%, avg=52.48, stdev=20.35, samples=223 iops : min= 3, max= 30, avg=12.47, stdev= 5.14, samples=223 write: IOPS=13, BW=55.3KiB/s (56.7kB/s)(6296KiB/113789msec); 0 zone resets clat (usec): min=883, max=188652, avg=32026.26, stdev=32142.28 lat (usec): min=884, max=188654, avg=32028.65, stdev=32144.46 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1237], 10.00th=[ 1631], 20.00th=[ 3589], | 30.00th=[ 6849], 40.00th=[ 16057], 50.00th=[ 23987], 60.00th=[ 31851], | 70.00th=[ 41681], 80.00th=[ 53740], 90.00th=[ 77071], 95.00th=[ 96994], | 99.00th=[141558], 99.50th=[154141], 99.90th=[183501], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 7, max= 150, per=25.38%, avg=55.33, stdev=22.99, samples=222 iops : min= 1, max= 37, avg=13.19, stdev= 5.81, samples=222 lat (usec) : 50=0.23%, 100=1.56%, 250=0.10%, 500=0.03%, 1000=0.07% lat (msec) : 2=6.35%, 4=4.75%, 10=6.97%, 20=12.47%, 50=42.32% lat (msec) : 100=20.96%, 250=4.07%, 500=0.10%, 2000=0.03% cpu : usr=0.10%, sys=4.92%, ctx=6436, 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=178318: Thu Aug 27 08:46:02 2026 read: IOPS=13, BW=53.7KiB/s (54.0kB/s)(5940KiB/110678msec) clat (usec): min=41, max=845124, avg=41142.38, stdev=33528.31 lat (usec): min=42, max=845125, avg=41155.54, stdev=33520.48 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 11469], 10.00th=[ 15664], 20.00th=[ 20579], | 30.00th=[ 25297], 40.00th=[ 30278], 50.00th=[ 34866], 60.00th=[ 41157], | 70.00th=[ 48497], 80.00th=[ 57410], 90.00th=[ 70779], 95.00th=[ 87557], | 99.00th=[143655], 99.50th=[175113], 99.90th=[208667], 99.95th=[843056], | 99.99th=[843056] bw ( KiB/s): min= 15, max= 110, per=25.74%, avg=53.54, stdev=19.75, samples=216 iops : min= 3, max= 27, avg=12.73, stdev= 4.97, samples=216 write: IOPS=14, BW=57.4KiB/s (58.7kB/s)(6348KiB/110678msec); 0 zone resets clat (usec): min=770, max=203573, avg=30910.72, stdev=33334.78 lat (usec): min=771, max=203575, avg=30914.12, stdev=33334.65 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1352], 20.00th=[ 2835], | 30.00th=[ 5800], 40.00th=[ 13042], 50.00th=[ 21365], 60.00th=[ 28705], | 70.00th=[ 38011], 80.00th=[ 54264], 90.00th=[ 78119], 95.00th=[100140], | 99.00th=[145753], 99.50th=[158335], 99.90th=[200279], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 7, max= 134, per=26.32%, avg=57.37, stdev=24.49, samples=215 iops : min= 1, max= 33, avg=13.71, stdev= 6.17, samples=215 lat (usec) : 50=0.13%, 100=1.50%, 1000=0.16% lat (msec) : 2=7.81%, 4=4.85%, 10=6.35%, 20=12.83%, 50=41.67% lat (msec) : 100=20.54%, 250=4.13%, 1000=0.03% cpu : usr=0.08%, sys=5.19%, ctx=6463, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=178319: Thu Aug 27 08:46:02 2026 read: IOPS=13, BW=52.3KiB/s (53.6kB/s)(6028KiB/115158msec) clat (usec): min=36, max=1058.9k, avg=42798.35, stdev=37531.47 lat (usec): min=36, max=1058.9k, avg=42800.61, stdev=37531.45 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 11076], 10.00th=[ 15664], | 20.00th=[ 20579], 30.00th=[ 26346], 40.00th=[ 31851], | 50.00th=[ 37487], 60.00th=[ 43254], 70.00th=[ 50070], | 80.00th=[ 60556], 90.00th=[ 73925], 95.00th=[ 90702], | 99.00th=[ 128451], 99.50th=[ 154141], 99.90th=[ 242222], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 7, max= 135, per=25.21%, avg=52.45, stdev=19.87, samples=224 iops : min= 1, max= 33, avg=12.46, stdev= 5.00, samples=224 write: IOPS=13, BW=54.4KiB/s (55.7kB/s)(6260KiB/115158msec); 0 zone resets clat (usec): min=842, max=284943, avg=32113.00, stdev=33429.23 lat (usec): min=843, max=284944, avg=32115.24, stdev=33429.83 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1434], 20.00th=[ 3032], | 30.00th=[ 6390], 40.00th=[ 14484], 50.00th=[ 22938], 60.00th=[ 31589], | 70.00th=[ 43254], 80.00th=[ 55837], 90.00th=[ 77071], 95.00th=[ 94897], | 99.00th=[141558], 99.50th=[154141], 99.90th=[248513], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 15, max= 119, per=24.70%, avg=53.84, stdev=20.93, samples=226 iops : min= 3, max= 29, avg=12.82, stdev= 5.29, samples=226 lat (usec) : 50=0.10%, 100=1.56%, 250=0.10%, 1000=0.26% lat (msec) : 2=7.06%, 4=4.46%, 10=6.35%, 20=12.57%, 50=40.27% lat (msec) : 100=23.27%, 250=3.94%, 500=0.03%, 2000=0.03% cpu : usr=0.08%, sys=4.72%, ctx=6470, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=178320: Thu Aug 27 08:46:02 2026 read: IOPS=13, BW=53.9KiB/s (55.2kB/s)(6052KiB/112301msec) clat (usec): min=34, max=260376, avg=41147.94, stdev=27424.45 lat (usec): min=34, max=260378, avg=41156.93, stdev=27426.25 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 9372], 10.00th=[ 14746], 20.00th=[ 20317], | 30.00th=[ 25297], 40.00th=[ 30540], 50.00th=[ 35914], 60.00th=[ 41681], | 70.00th=[ 48497], 80.00th=[ 57410], 90.00th=[ 74974], 95.00th=[ 93848], | 99.00th=[137364], 99.50th=[160433], 99.90th=[204473], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 7, max= 95, per=25.72%, avg=53.50, stdev=18.35, samples=219 iops : min= 1, max= 23, avg=12.73, stdev= 4.64, samples=219 write: IOPS=13, BW=55.5KiB/s (56.9kB/s)(6236KiB/112301msec); 0 zone resets clat (usec): min=824, max=877311, avg=31782.11, stdev=39052.06 lat (usec): min=826, max=877313, avg=31785.43, stdev=39051.03 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1221], 10.00th=[ 1369], 20.00th=[ 3032], | 30.00th=[ 6980], 40.00th=[ 13960], 50.00th=[ 22938], 60.00th=[ 30278], | 70.00th=[ 40633], 80.00th=[ 55313], 90.00th=[ 74974], 95.00th=[ 91751], | 99.00th=[135267], 99.50th=[189793], 99.90th=[337642], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 7, max= 134, per=25.33%, avg=55.23, stdev=22.64, samples=219 iops : min= 1, max= 33, avg=13.16, stdev= 5.72, samples=219 lat (usec) : 50=0.16%, 100=1.73%, 250=0.10%, 500=0.03%, 1000=0.10% lat (msec) : 2=7.65%, 4=3.97%, 10=6.51%, 20=13.22%, 50=40.69% lat (msec) : 100=22.33%, 250=3.42%, 500=0.07%, 1000=0.03% cpu : usr=0.09%, sys=5.14%, ctx=6576, 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=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=209KiB/s (214kB/s), 52.3KiB/s-53.9KiB/s (53.6kB/s-55.2kB/s), io=23.4MiB (24.6MB), run=110678-115158msec WRITE: bw=218KiB/s (224kB/s), 54.4KiB/s-57.4KiB/s (55.7kB/s-58.7kB/s), io=24.6MiB (25.7MB), run=110678-115158msec rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=178313: Thu Aug 27 08:46:39 2026 read: IOPS=7, BW=29.5KiB/s (30.2kB/s)(2956KiB/100150msec) clat (msec): min=8, max=1091, avg=53.87, stdev=55.05 lat (msec): min=8, max=1091, avg=53.87, stdev=55.05 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 47], | 70.00th=[ 58], 80.00th=[ 81], 90.00th=[ 108], 95.00th=[ 138], | 99.00th=[ 203], 99.50th=[ 243], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 102, per=21.51%, avg=29.46, stdev=15.45, samples=194 iops : min= 1, max= 25, avg= 6.68, stdev= 3.90, samples=194 write: IOPS=7, BW=30.7KiB/s (31.5kB/s)(3076KiB/100150msec); 0 zone resets clat (msec): min=12, max=414, avg=77.94, stdev=44.25 lat (msec): min=12, max=414, avg=77.94, stdev=44.25 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 27], 10.00th=[ 34], 20.00th=[ 42], | 30.00th=[ 50], 40.00th=[ 59], 50.00th=[ 68], 60.00th=[ 80], | 70.00th=[ 92], 80.00th=[ 107], 90.00th=[ 140], 95.00th=[ 161], | 99.00th=[ 213], 99.50th=[ 266], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 7, max= 64, per=21.46%, avg=30.69, stdev=12.59, samples=194 iops : min= 1, max= 16, avg= 6.98, stdev= 3.17, samples=194 lat (msec) : 10=0.13%, 20=6.76%, 50=39.89%, 100=35.19%, 250=17.50% lat (msec) : 500=0.40%, 2000=0.07% cpu : usr=0.04%, sys=1.43%, ctx=1883, 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=740,769,0,0 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=178314: Thu Aug 27 08:46:39 2026 read: IOPS=9, BW=39.2KiB/s (40.2kB/s)(5940KiB/151427msec) clat (msec): min=5, max=920, avg=39.14, stdev=41.90 lat (msec): min=5, max=920, avg=39.15, stdev=41.90 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 55], 90.00th=[ 88], 95.00th=[ 115], | 99.00th=[ 171], 99.50th=[ 197], 99.90th=[ 230], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 207, per=29.09%, avg=39.85, stdev=27.19, samples=290 iops : min= 1, max= 51, avg= 9.29, stdev= 6.84, samples=290 write: IOPS=10, BW=41.9KiB/s (42.9kB/s)(6348KiB/151427msec); 0 zone resets clat (msec): min=11, max=455, avg=58.53, stdev=42.64 lat (msec): min=11, max=455, avg=58.53, stdev=42.64 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 67], 80.00th=[ 88], 90.00th=[ 113], 95.00th=[ 142], | 99.00th=[ 203], 99.50th=[ 257], 99.90th=[ 355], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 7, max= 128, per=29.19%, avg=41.75, stdev=24.67, samples=295 iops : min= 1, max= 32, avg= 9.77, stdev= 6.20, samples=295 lat (msec) : 10=3.48%, 20=17.19%, 50=46.00%, 100=22.59%, 250=10.38% lat (msec) : 500=0.33%, 1000=0.03% cpu : usr=0.07%, sys=1.78%, ctx=4817, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178315: Thu Aug 27 08:46:39 2026 read: IOPS=9, BW=39.7KiB/s (40.6kB/s)(6028KiB/152005msec) clat (msec): min=4, max=310, avg=39.53, stdev=36.09 lat (msec): min=4, max=310, avg=39.53, stdev=36.09 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 87], 95.00th=[ 115], | 99.00th=[ 180], 99.50th=[ 197], 99.90th=[ 247], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 166, per=28.95%, avg=39.66, stdev=27.30, samples=295 iops : min= 1, max= 41, avg= 9.24, stdev= 6.87, samples=295 write: IOPS=10, BW=41.2KiB/s (42.2kB/s)(6260KiB/152005msec); 0 zone resets clat (msec): min=10, max=926, avg=58.79, stdev=46.45 lat (msec): min=10, max=926, avg=58.80, stdev=46.45 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 54], | 70.00th=[ 66], 80.00th=[ 85], 90.00th=[ 116], 95.00th=[ 140], | 99.00th=[ 203], 99.50th=[ 226], 99.90th=[ 414], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7, max= 159, per=28.57%, avg=40.86, stdev=24.51, samples=297 iops : min= 1, max= 39, avg= 9.55, stdev= 6.17, samples=297 lat (msec) : 10=3.42%, 20=16.60%, 50=45.67%, 100=23.27%, 250=10.77% lat (msec) : 500=0.23%, 1000=0.03% cpu : usr=0.06%, sys=1.75%, ctx=4903, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178316: Thu Aug 27 08:46:39 2026 read: IOPS=9, BW=39.7KiB/s (40.7kB/s)(6052KiB/152378msec) clat (msec): min=4, max=263, avg=39.41, stdev=34.54 lat (msec): min=4, max=263, avg=39.41, stdev=34.54 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 57], 90.00th=[ 85], 95.00th=[ 113], | 99.00th=[ 176], 99.50th=[ 194], 99.90th=[ 232], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 7, max= 167, per=29.42%, avg=40.30, stdev=25.95, samples=291 iops : min= 1, max= 41, avg= 9.41, stdev= 6.52, samples=291 write: IOPS=10, BW=40.9KiB/s (41.9kB/s)(6236KiB/152378msec); 0 zone resets clat (msec): min=10, max=924, avg=59.22, stdev=47.42 lat (msec): min=10, max=924, avg=59.23, stdev=47.42 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 55], | 70.00th=[ 69], 80.00th=[ 85], 90.00th=[ 114], 95.00th=[ 144], | 99.00th=[ 197], 99.50th=[ 215], 99.90th=[ 456], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7, max= 151, per=28.26%, avg=40.41, stdev=24.76, samples=299 iops : min= 1, max= 37, avg= 9.43, stdev= 6.24, samples=299 lat (msec) : 10=3.12%, 20=16.80%, 50=45.54%, 100=24.32%, 250=9.96% lat (msec) : 500=0.23%, 1000=0.03% cpu : usr=0.08%, sys=1.85%, ctx=4947, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=138KiB/s (141kB/s), 29.5KiB/s-39.7KiB/s (30.2kB/s-40.7kB/s), io=20.5MiB (21.5MB), run=100150-152378msec WRITE: bw=144KiB/s (147kB/s), 30.7KiB/s-41.9KiB/s (31.5kB/s-42.9kB/s), io=21.4MiB (22.4MB), run=100150-152378msec 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=178361: Thu Aug 27 08:47:21 2026 read: IOPS=12, BW=197KiB/s (202kB/s)(5920KiB/29999msec) clat (usec): min=30, max=201042, avg=42345.49, stdev=29507.69 lat (usec): min=30, max=201043, avg=42346.60, stdev=29507.65 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 60], 10.00th=[ 74], 20.00th=[ 19268], | 30.00th=[ 27395], 40.00th=[ 32113], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 53216], 80.00th=[ 63701], 90.00th=[ 77071], 95.00th=[ 92799], | 99.00th=[124257], 99.50th=[179307], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 95, max= 382, per=24.50%, avg=193.07, stdev=66.30, samples=58 iops : min= 5, max= 23, avg=11.33, stdev= 4.28, samples=58 write: IOPS=13, BW=212KiB/s (217kB/s)(6368KiB/29999msec); 0 zone resets clat (usec): min=1110, max=212724, avg=35375.15, stdev=36488.00 lat (usec): min=1112, max=212727, avg=35378.79, stdev=36489.27 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1778], 10.00th=[ 2442], 20.00th=[ 4752], | 30.00th=[ 7898], 40.00th=[ 13173], 50.00th=[ 22152], 60.00th=[ 33424], | 70.00th=[ 47973], 80.00th=[ 64750], 90.00th=[ 89654], 95.00th=[110625], | 99.00th=[152044], 99.50th=[160433], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 31, max= 443, per=25.37%, avg=210.29, stdev=77.87, samples=58 iops : min= 1, max= 27, avg=12.43, stdev= 4.87, samples=58 lat (usec) : 50=0.91%, 100=4.82%, 250=0.13%, 500=0.26%, 1000=0.13% lat (msec) : 2=4.04%, 4=5.34%, 10=8.98%, 20=10.03%, 50=33.33% lat (msec) : 100=26.82%, 250=5.21% cpu : usr=0.06%, sys=5.24%, ctx=1589, 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=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=178362: Thu Aug 27 08:47:21 2026 read: IOPS=11, BW=189KiB/s (194kB/s)(5744KiB/30383msec) clat (usec): min=40, max=183734, avg=46631.34, stdev=29827.12 lat (usec): min=40, max=183735, avg=46632.48, stdev=29827.16 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 82], 10.00th=[ 16188], 20.00th=[ 22938], | 30.00th=[ 29754], 40.00th=[ 34341], 50.00th=[ 41157], 60.00th=[ 50594], | 70.00th=[ 57410], 80.00th=[ 67634], 90.00th=[ 82314], 95.00th=[ 98042], | 99.00th=[141558], 99.50th=[175113], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 63, max= 352, per=23.66%, avg=186.41, stdev=63.65, samples=59 iops : min= 3, max= 22, avg=10.92, stdev= 4.05, samples=59 write: IOPS=13, BW=215KiB/s (221kB/s)(6544KiB/30383msec); 0 zone resets clat (usec): min=1306, max=191856, avg=32967.30, stdev=30646.58 lat (usec): min=1307, max=191857, avg=32970.08, stdev=30646.82 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 2024], 10.00th=[ 3163], 20.00th=[ 5800], | 30.00th=[ 10552], 40.00th=[ 16909], 50.00th=[ 23987], 60.00th=[ 32113], | 70.00th=[ 42730], 80.00th=[ 57410], 90.00th=[ 76022], 95.00th=[ 95945], | 99.00th=[121111], 99.50th=[131597], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 31, max= 415, per=25.42%, avg=210.75, stdev=87.34, samples=59 iops : min= 1, max= 25, avg=12.46, stdev= 5.46, samples=59 lat (usec) : 50=0.39%, 100=2.34%, 250=0.52% lat (msec) : 2=2.60%, 4=5.08%, 10=7.94%, 20=10.55%, 50=38.15% lat (msec) : 100=28.26%, 250=4.17% cpu : usr=0.06%, sys=5.74%, ctx=1659, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=178363: Thu Aug 27 08:47:21 2026 read: IOPS=12, BW=206KiB/s (211kB/s)(6256KiB/30342msec) clat (usec): min=37, max=189179, avg=43856.95, stdev=31315.00 lat (usec): min=37, max=189180, avg=43858.16, stdev=31315.02 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 88], 20.00th=[ 19792], | 30.00th=[ 26870], 40.00th=[ 33424], 50.00th=[ 39060], 60.00th=[ 44827], | 70.00th=[ 54264], 80.00th=[ 64750], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[141558], 99.50th=[179307], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 63, max= 352, per=26.26%, avg=206.95, stdev=67.41, samples=59 iops : min= 3, max= 22, avg=12.20, stdev= 4.27, samples=59 write: IOPS=12, BW=199KiB/s (204kB/s)(6032KiB/30342msec); 0 zone resets clat (usec): min=1055, max=192047, avg=34786.94, stdev=34068.50 lat (usec): min=1056, max=192048, avg=34792.98, stdev=34069.87 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1745], 10.00th=[ 2024], 20.00th=[ 4080], | 30.00th=[ 8455], 40.00th=[ 15795], 50.00th=[ 26346], 60.00th=[ 36439], | 70.00th=[ 44827], 80.00th=[ 57410], 90.00th=[ 83362], 95.00th=[103285], | 99.00th=[156238], 99.50th=[170918], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 63, max= 414, per=23.55%, avg=195.24, stdev=88.13, samples=59 iops : min= 3, max= 25, avg=11.47, stdev= 5.57, samples=59 lat (usec) : 50=0.39%, 100=5.21%, 750=0.26% lat (msec) : 2=4.82%, 4=5.08%, 10=6.51%, 20=9.24%, 50=38.02% lat (msec) : 100=25.13%, 250=5.34% cpu : usr=0.08%, sys=5.20%, ctx=1664, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=178365: Thu Aug 27 08:47:21 2026 read: IOPS=12, BW=208KiB/s (213kB/s)(6032KiB/29064msec) clat (usec): min=37, max=276997, avg=40962.88, stdev=28946.58 lat (usec): min=37, max=276999, avg=40964.17, stdev=28946.36 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 61], 10.00th=[ 85], 20.00th=[ 21103], | 30.00th=[ 27919], 40.00th=[ 33817], 50.00th=[ 38536], 60.00th=[ 44303], | 70.00th=[ 50070], 80.00th=[ 57410], 90.00th=[ 70779], 95.00th=[ 90702], | 99.00th=[126354], 99.50th=[187696], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 95, max= 384, per=26.11%, avg=205.72, stdev=68.49, samples=57 iops : min= 5, max= 24, avg=12.12, stdev= 4.32, samples=57 write: IOPS=13, BW=215KiB/s (220kB/s)(6256KiB/29064msec); 0 zone resets clat (usec): min=969, max=270709, avg=34260.84, stdev=35878.45 lat (usec): min=971, max=270712, avg=34275.95, stdev=35901.76 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1795], 10.00th=[ 2442], 20.00th=[ 5080], | 30.00th=[ 8717], 40.00th=[ 14353], 50.00th=[ 23725], 60.00th=[ 32375], | 70.00th=[ 43779], 80.00th=[ 62129], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[173016], 99.50th=[225444], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 63, max= 415, per=25.94%, avg=215.07, stdev=85.68, samples=57 iops : min= 3, max= 25, avg=12.74, stdev= 5.41, samples=57 lat (usec) : 50=0.13%, 100=5.21%, 250=0.52%, 500=0.13%, 1000=0.13% lat (msec) : 2=3.52%, 4=4.30%, 10=8.59%, 20=10.03%, 50=39.58% lat (msec) : 100=24.22%, 250=3.39%, 500=0.26% cpu : usr=0.07%, sys=5.81%, ctx=1658, 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=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=788KiB/s (807kB/s), 189KiB/s-208KiB/s (194kB/s-213kB/s), io=23.4MiB (24.5MB), run=29064-30383msec WRITE: bw=829KiB/s (849kB/s), 199KiB/s-215KiB/s (204kB/s-221kB/s), io=24.6MiB (25.8MB), run=29064-30383msec fio: pid=178369, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=178366: Thu Aug 27 08:47:34 2026 read: IOPS=8, BW=137KiB/s (140kB/s)(5920KiB/43250msec) clat (msec): min=6, max=363, avg=47.79, stdev=42.05 lat (msec): min=6, max=363, avg=47.79, stdev=42.05 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 51], 80.00th=[ 70], 90.00th=[ 96], 95.00th=[ 130], | 99.00th=[ 236], 99.50th=[ 257], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 31, max= 383, per=26.52%, avg=139.23, stdev=81.36, samples=83 iops : min= 1, max= 23, avg= 7.92, stdev= 5.12, samples=83 write: IOPS=9, BW=147KiB/s (151kB/s)(6368KiB/43250msec); 0 zone resets clat (msec): min=15, max=241, avg=63.81, stdev=39.24 lat (msec): min=15, max=241, avg=63.81, stdev=39.24 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 52], 60.00th=[ 60], | 70.00th=[ 73], 80.00th=[ 87], 90.00th=[ 120], 95.00th=[ 142], | 99.00th=[ 224], 99.50th=[ 228], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 30, max= 384, per=26.70%, avg=148.43, stdev=76.20, samples=84 iops : min= 1, max= 24, avg= 8.50, stdev= 4.88, samples=84 lat (msec) : 10=0.26%, 20=10.55%, 50=47.66%, 100=29.43%, 250=11.85% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=1.76%, ctx=1178, 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=178367: Thu Aug 27 08:47:34 2026 read: IOPS=8, BW=132KiB/s (135kB/s)(5744KiB/43454msec) clat (msec): min=7, max=209, avg=48.50, stdev=40.12 lat (msec): min=7, max=209, avg=48.51, stdev=40.12 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 53], 80.00th=[ 68], 90.00th=[ 115], 95.00th=[ 144], | 99.00th=[ 186], 99.50th=[ 201], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 28, max= 413, per=25.48%, avg=133.75, stdev=83.32, samples=83 iops : min= 1, max= 25, avg= 7.58, stdev= 5.28, samples=83 write: IOPS=9, BW=151KiB/s (154kB/s)(6544KiB/43454msec); 0 zone resets clat (msec): min=13, max=290, avg=62.62, stdev=39.22 lat (msec): min=13, max=290, avg=62.62, stdev=39.22 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 58], | 70.00th=[ 69], 80.00th=[ 88], 90.00th=[ 116], 95.00th=[ 140], | 99.00th=[ 203], 99.50th=[ 228], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 416, per=27.17%, avg=151.07, stdev=75.37, samples=83 iops : min= 1, max= 26, avg= 8.67, stdev= 4.81, samples=83 lat (msec) : 10=1.43%, 20=8.98%, 50=47.14%, 100=29.04%, 250=13.28% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=1.67%, ctx=1170, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178368: Thu Aug 27 08:47:34 2026 read: IOPS=9, BW=145KiB/s (148kB/s)(6256KiB/43260msec) clat (msec): min=7, max=214, avg=44.72, stdev=36.85 lat (msec): min=7, max=214, avg=44.72, stdev=36.85 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 47], 80.00th=[ 61], 90.00th=[ 90], 95.00th=[ 122], | 99.00th=[ 190], 99.50th=[ 213], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 30, max= 411, per=27.91%, avg=146.54, stdev=87.17, samples=84 iops : min= 1, max= 25, avg= 8.39, stdev= 5.53, samples=84 write: IOPS=8, BW=139KiB/s (143kB/s)(6032KiB/43260msec); 0 zone resets clat (msec): min=11, max=303, avg=67.50, stdev=43.75 lat (msec): min=11, max=303, avg=67.50, stdev=43.75 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 30], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 78], 80.00th=[ 93], 90.00th=[ 122], 95.00th=[ 159], | 99.00th=[ 228], 99.50th=[ 288], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 350, per=25.02%, avg=139.10, stdev=70.52, samples=84 iops : min= 1, max= 21, avg= 7.90, stdev= 4.48, samples=84 lat (msec) : 10=0.78%, 20=11.59%, 50=46.61%, 100=28.91%, 250=11.72% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.69%, ctx=1234, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=178369: Thu Aug 27 08:47:34 2026 read: IOPS=8, BW=131KiB/s (134kB/s)(4928KiB/37712msec) clat (msec): min=7, max=352, avg=49.70, stdev=42.77 lat (msec): min=7, max=352, avg=49.70, stdev=42.77 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 41], | 70.00th=[ 52], 80.00th=[ 70], 90.00th=[ 104], 95.00th=[ 146], | 99.00th=[ 184], 99.50th=[ 271], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 31, max= 416, per=25.87%, avg=135.83, stdev=76.40, samples=71 iops : min= 1, max= 26, avg= 7.72, stdev= 4.86, samples=71 write: IOPS=8, BW=139KiB/s (142kB/s)(5248KiB/37712msec); 0 zone resets clat (msec): min=19, max=279, avg=67.16, stdev=41.78 lat (msec): min=19, max=279, avg=67.17, stdev=41.78 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 65], | 70.00th=[ 77], 80.00th=[ 94], 90.00th=[ 122], 95.00th=[ 144], | 99.00th=[ 234], 99.50th=[ 247], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 29, max= 415, per=25.11%, avg=139.63, stdev=74.84, samples=73 iops : min= 1, max= 25, avg= 7.95, stdev= 4.72, samples=73 lat (msec) : 10=0.78%, 20=7.38%, 50=48.35%, 100=30.14%, 250=12.72% lat (msec) : 500=0.47% cpu : usr=0.04%, sys=1.67%, ctx=887, majf=0, minf=22 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=309,328,0,0 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=526KiB/s (538kB/s), 131KiB/s-145KiB/s (134kB/s-148kB/s), io=22.3MiB (23.4MB), run=37712-43454msec WRITE: bw=557KiB/s (570kB/s), 139KiB/s-151KiB/s (142kB/s-154kB/s), io=23.6MiB (24.8MB), run=37712-43454msec 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=178382: Thu Aug 27 08:47:49 2026 read: IOPS=2, BW=2090KiB/s (2140kB/s)(7168KiB/3430msec) clat (msec): min=79, max=460, avg=250.58, stdev=146.42 lat (msec): min=79, max=460, avg=250.58, stdev=146.42 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 222], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 422], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 1928, max= 5456, per=74.13%, avg=3135.67, stdev=2010.03, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1493KiB/s (1529kB/s)(5120KiB/3430msec); 0 zone resets clat (msec): min=117, max=619, avg=328.51, stdev=204.92 lat (msec): min=117, max=619, avg=328.63, stdev=204.93 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2015, max= 3992, per=45.34%, avg=2685.00, stdev=1132.02, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.06%, sys=3.70%, ctx=118, 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=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=178383: Thu Aug 27 08:47:49 2026 read: IOPS=0, BW=423KiB/s (433kB/s)(2048KiB/4841msec) clat (msec): min=192, max=418, avg=305.30, stdev=159.51 lat (msec): min=192, max=418, avg=305.30, stdev=159.51 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 192], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 2031, max= 2048, per=48.22%, avg=2039.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2115KiB/s (2166kB/s)(10.0MiB/4841msec); 0 zone resets clat (msec): min=233, max=657, avg=389.53, stdev=138.36 lat (msec): min=233, max=657, avg=389.65, stdev=138.35 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 241], | 30.00th=[ 243], 40.00th=[ 296], 50.00th=[ 401], 60.00th=[ 405], | 70.00th=[ 443], 80.00th=[ 485], 90.00th=[ 498], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1996, max= 4039, per=43.35%, avg=2567.29, stdev=944.41, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=33.33%, 500=58.33%, 750=8.33% cpu : usr=0.00%, sys=3.35%, ctx=88, 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=178384: Thu Aug 27 08:47:49 2026 read: IOPS=1, BW=1270KiB/s (1301kB/s)(6144KiB/4837msec) clat (msec): min=85, max=919, avg=426.56, stdev=295.07 lat (msec): min=85, max=919, avg=426.56, stdev=295.07 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 498], | 70.00th=[ 518], 80.00th=[ 518], 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= 1996, max= 4023, per=59.41%, avg=2513.25, stdev=1006.55, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1270KiB/s (1301kB/s)(6144KiB/4837msec); 0 zone resets clat (msec): min=121, max=798, avg=354.42, stdev=245.91 lat (msec): min=121, max=799, avg=354.54, stdev=245.99 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 359], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1861, max= 2048, per=33.71%, avg=1996.40, stdev=76.50, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 750=8.33%, 1000=16.67% cpu : usr=0.02%, sys=4.14%, ctx=146, 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=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=178385: Thu Aug 27 08:47:49 2026 read: IOPS=1, BW=1102KiB/s (1128kB/s)(5120KiB/4646msec) clat (msec): min=95, max=521, avg=298.64, stdev=185.93 lat (msec): min=95, max=521, avg=298.64, stdev=185.93 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 95], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 1996, max= 4063, per=63.62%, avg=2691.33, stdev=1187.94, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1543KiB/s (1580kB/s)(7168KiB/4646msec); 0 zone resets clat (msec): min=135, max=850, avg=427.85, stdev=247.82 lat (msec): min=135, max=850, avg=427.95, stdev=247.81 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 148], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 468], 60.00th=[ 514], | 70.00th=[ 514], 80.00th=[ 535], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 1765, max= 2048, per=32.92%, avg=1949.60, stdev=111.97, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=5.10%, ctx=100, 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=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=4231KiB/s (4332kB/s), 423KiB/s-2090KiB/s (433kB/s-2140kB/s), io=20.0MiB (20.0MB), run=3430-4841msec WRITE: bw=5923KiB/s (6065kB/s), 1270KiB/s-2115KiB/s (1301kB/s-2166kB/s), io=28.0MiB (29.4MB), run=3430-4841msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178386: Thu Aug 27 08:47:49 2026 read: IOPS=2, BW=2667KiB/s (2731kB/s)(7168KiB/2688msec) clat (usec): min=848, max=394577, avg=174388.92, stdev=128268.62 lat (usec): min=849, max=394579, avg=174390.60, stdev=128268.50 clat percentiles (usec): | 1.00th=[ 848], 5.00th=[ 848], 10.00th=[ 848], 20.00th=[ 72877], | 30.00th=[123208], 40.00th=[123208], 50.00th=[162530], 60.00th=[227541], | 70.00th=[227541], 80.00th=[238027], 90.00th=[396362], 95.00th=[396362], | 99.00th=[396362], 99.50th=[396362], 99.90th=[396362], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 2011, max= 4079, per=72.67%, avg=3039.00, stdev=1173.38, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1905KiB/s (1950kB/s)(5120KiB/2688msec); 0 zone resets clat (msec): min=78, max=473, avg=286.93, stdev=142.07 lat (msec): min=79, max=473, avg=287.01, stdev=142.06 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 80], | 30.00th=[ 264], 40.00th=[ 264], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 1946, max= 6035, per=57.02%, avg=3338.67, stdev=2335.52, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (usec) : 1000=8.33% lat (msec) : 100=16.67%, 250=33.33%, 500=41.67% cpu : usr=0.00%, sys=12.69%, ctx=154, 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=178387: Thu Aug 27 08:47:49 2026 read: IOPS=0, BW=418KiB/s (428kB/s)(2048KiB/4897msec) clat (msec): min=21, max=464, avg=242.86, stdev=313.16 lat (msec): min=21, max=464, avg=242.86, stdev=313.16 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 22], 10.00th=[ 22], 20.00th=[ 22], | 30.00th=[ 22], 40.00th=[ 22], 50.00th=[ 22], 60.00th=[ 464], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 1396, max= 2027, per=40.93%, avg=1711.50, stdev=446.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2091KiB/s (2141kB/s)(10.0MiB/4897msec); 0 zone resets clat (msec): min=142, max=738, avg=415.24, stdev=189.28 lat (msec): min=142, max=739, avg=415.33, stdev=189.28 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 209], | 30.00th=[ 264], 40.00th=[ 334], 50.00th=[ 393], 60.00th=[ 435], | 70.00th=[ 443], 80.00th=[ 558], 90.00th=[ 634], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 2000, max= 4079, per=51.39%, avg=3009.00, stdev=1092.21, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 50=8.33%, 250=16.67%, 500=50.00%, 750=25.00% cpu : usr=0.00%, sys=11.09%, ctx=143, 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=178388: Thu Aug 27 08:47:49 2026 read: IOPS=2, BW=2072KiB/s (2122kB/s)(6144KiB/2965msec) clat (usec): min=484, max=250520, avg=107125.94, stdev=118497.57 lat (usec): min=486, max=250522, avg=107127.50, stdev=118497.50 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 2024], | 30.00th=[ 2024], 40.00th=[ 3425], 50.00th=[ 3425], 60.00th=[164627], | 70.00th=[221250], 80.00th=[221250], 90.00th=[250610], 95.00th=[250610], | 99.00th=[250610], 99.50th=[250610], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 3878, max= 6083, per=100.00%, avg=4980.50, stdev=1559.17, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2072KiB/s (2122kB/s)(6144KiB/2965msec); 0 zone resets clat (msec): min=136, max=659, avg=345.10, stdev=207.76 lat (msec): min=136, max=659, avg=345.38, stdev=207.96 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 259], 50.00th=[ 259], 60.00th=[ 321], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 2000, max= 6107, per=69.24%, avg=4054.00, stdev=2053.50, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 lat (usec) : 500=8.33% lat (msec) : 4=16.67%, 250=33.33%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=14.84%, ctx=196, 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=178389: Thu Aug 27 08:47:49 2026 read: IOPS=1, BW=1309KiB/s (1340kB/s)(5120KiB/3912msec) clat (usec): min=766, max=294812, avg=136151.90, stdev=131646.93 lat (usec): min=768, max=294814, avg=136153.29, stdev=131647.04 clat percentiles (usec): | 1.00th=[ 766], 5.00th=[ 766], 10.00th=[ 766], 20.00th=[ 766], | 30.00th=[ 1893], 40.00th=[ 1893], 50.00th=[162530], 60.00th=[162530], | 70.00th=[221250], 80.00th=[221250], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 2048, max= 6000, per=96.22%, avg=4024.00, stdev=2794.49, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1832KiB/s (1876kB/s)(7168KiB/3912msec); 0 zone resets clat (msec): min=170, max=962, avg=426.85, stdev=283.39 lat (msec): min=170, max=963, avg=427.61, stdev=283.51 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 188], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 326], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 625], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 1381, max= 4055, per=38.56%, avg=2257.67, stdev=917.83, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=12.40%, ctx=124, 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=4182KiB/s (4283kB/s), 418KiB/s-2667KiB/s (428kB/s-2731kB/s), io=20.0MiB (20.0MB), run=2688-4897msec WRITE: bw=5855KiB/s (5996kB/s), 1832KiB/s-2091KiB/s (1876kB/s-2141kB/s), io=28.0MiB (29.4MB), run=2688-4897msec 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=178396: Thu Aug 27 08:48:02 2026 read: IOPS=1, BW=5317KiB/s (5445kB/s)(12.0MiB/2311msec) clat (msec): min=636, max=862, avg=735.30, stdev=115.75 lat (msec): min=636, max=862, avg=735.30, stdev=115.75 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7984, max= 8175, per=100.00%, avg=8079.50, stdev=135.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=12.29%, ctx=530, 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=178397: Thu Aug 27 08:48:02 2026 read: IOPS=0, BW=1627KiB/s (1666kB/s)(4096KiB/2518msec) clat (nsec): min=948013k, max=948013k, avg=948013214.00, stdev= 0.00 lat (nsec): min=948015k, max=948015k, avg=948015294.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 953], 5.00th=[ 953], 10.00th=[ 953], 20.00th=[ 953], | 30.00th=[ 953], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7984, max= 7984, per=100.00%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3253KiB/s (3331kB/s)(8192KiB/2518msec); 0 zone resets clat (msec): min=308, max=1186, avg=747.22, stdev=620.64 lat (msec): min=308, max=1186, avg=747.77, stdev=620.85 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=[ 1183], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8175, max= 8175, per=68.14%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.16%, sys=8.14%, ctx=98, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178398: Thu Aug 27 08:48:02 2026 write: IOPS=1, BW=4499KiB/s (4607kB/s)(12.0MiB/2731msec); 0 zone resets clat (msec): min=624, max=1100, avg=858.97, stdev=238.21 lat (msec): min=626, max=1103, avg=860.62, stdev=238.89 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8175, max= 8175, per=68.14%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.49%, ctx=73, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178399: Thu Aug 27 08:48:02 2026 write: IOPS=1, BW=4989KiB/s (5109kB/s)(12.0MiB/2463msec); 0 zone resets clat (msec): min=356, max=1365, avg=776.15, stdev=525.50 lat (msec): min=358, max=1366, avg=777.75, stdev=524.97 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min=15968, max=15968, per=100.00%, avg=15968.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.39%, ctx=54, 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=6507KiB/s (6663kB/s), 1627KiB/s-5317KiB/s (1666kB/s-5445kB/s), io=16.0MiB (16.8MB), run=2311-2518msec WRITE: bw=11.7MiB/s (12.3MB/s), 3253KiB/s-4989KiB/s (3331kB/s-5109kB/s), io=32.0MiB (33.6MB), run=2463-2731msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178400: Thu Aug 27 08:48:03 2026 read: IOPS=1, BW=4621KiB/s (4732kB/s)(12.0MiB/2659msec) clat (msec): min=212, max=1500, avg=826.87, stdev=646.09 lat (msec): min=212, max=1500, avg=826.87, stdev=646.09 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.69%, ctx=61, 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=178401: Thu Aug 27 08:48:03 2026 read: IOPS=0, BW=1541KiB/s (1578kB/s)(4096KiB/2658msec) clat (nsec): min=1181.1M, max=1181.1M, avg=1181126037.00, stdev= 0.00 lat (nsec): min=1181.1M, max=1181.1M, avg=1181128026.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3082KiB/s (3156kB/s)(8192KiB/2658msec); 0 zone resets clat (msec): min=421, max=865, avg=643.41, stdev=313.65 lat (msec): min=421, max=865, avg=643.81, stdev=313.70 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 869], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8159, max= 8159, per=66.18%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.49%, ctx=75, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178402: Thu Aug 27 08:48:03 2026 write: IOPS=1, BW=4826KiB/s (4942kB/s)(12.0MiB/2546msec); 0 zone resets clat (msec): min=178, max=1202, avg=831.10, stdev=566.65 lat (msec): min=179, max=1203, avg=831.59, stdev=566.73 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8143, max= 8143, per=66.05%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.54%, ctx=51, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178403: Thu Aug 27 08:48:03 2026 write: IOPS=1, BW=5294KiB/s (5421kB/s)(12.0MiB/2321msec); 0 zone resets clat (msec): min=548, max=926, avg=721.84, stdev=190.99 lat (msec): min=548, max=926, avg=722.37, stdev=190.89 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 8143, max= 8159, per=66.12%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=7.24%, ctx=81, 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=6162KiB/s (6310kB/s), 1541KiB/s-4621KiB/s (1578kB/s-4732kB/s), io=16.0MiB (16.8MB), run=2658-2659msec WRITE: bw=12.0MiB/s (12.6MB/s), 3082KiB/s-5294KiB/s (3156kB/s-5421kB/s), io=32.0MiB (33.6MB), run=2321-2658msec