== sanity test 398b: DIO and buffer IO race ============== 16:11:23 (1787861483) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.16416 s, 9.7 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=179322: Thu Aug 27 16:13:46 2026 read: IOPS=12, BW=48.4KiB/s (49.6kB/s)(5992KiB/123830msec) clat (usec): min=39, max=1206.9k, avg=44547.71, stdev=41443.45 lat (usec): min=40, max=1206.9k, avg=44552.74, stdev=41443.75 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 9765], 10.00th=[ 15533], | 20.00th=[ 21103], 30.00th=[ 26608], 40.00th=[ 32113], | 50.00th=[ 38536], 60.00th=[ 44827], 70.00th=[ 52167], | 80.00th=[ 63701], 90.00th=[ 80217], 95.00th=[ 99091], | 99.00th=[ 152044], 99.50th=[ 162530], 99.90th=[ 202376], | 99.95th=[1199571], 99.99th=[1199571] bw ( KiB/s): min= 7, max= 142, per=25.03%, avg=48.32, stdev=19.42, samples=241 iops : min= 1, max= 35, avg=11.42, stdev= 4.86, samples=241 write: IOPS=12, BW=50.8KiB/s (52.1kB/s)(6296KiB/123830msec); 0 zone resets clat (usec): min=761, max=214692, avg=35936.24, stdev=35650.66 lat (usec): min=763, max=214694, avg=35940.69, stdev=35651.23 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1565], 20.00th=[ 4047], | 30.00th=[ 9241], 40.00th=[ 18482], 50.00th=[ 26346], 60.00th=[ 35390], | 70.00th=[ 45876], 80.00th=[ 61604], 90.00th=[ 86508], 95.00th=[107480], | 99.00th=[158335], 99.50th=[168821], 99.90th=[206570], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 7, max= 151, per=25.15%, avg=51.05, stdev=21.29, samples=240 iops : min= 1, max= 37, avg=12.12, stdev= 5.36, samples=240 lat (usec) : 50=0.16%, 100=1.50%, 250=0.03%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=6.22%, 4=3.87%, 10=6.09%, 20=11.98%, 50=40.14% lat (msec) : 100=24.35%, 250=5.37%, 2000=0.03% cpu : usr=0.09%, sys=5.25%, ctx=6548, 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=179323: Thu Aug 27 16:13:46 2026 read: IOPS=12, BW=49.4KiB/s (50.6kB/s)(5940KiB/120212msec) clat (usec): min=39, max=284083, avg=44472.15, stdev=29831.17 lat (usec): min=40, max=284085, avg=44474.08, stdev=29831.16 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 10552], 10.00th=[ 15926], 20.00th=[ 21627], | 30.00th=[ 26870], 40.00th=[ 32113], 50.00th=[ 38011], 60.00th=[ 44827], | 70.00th=[ 53216], 80.00th=[ 64750], 90.00th=[ 81265], 95.00th=[ 98042], | 99.00th=[147850], 99.50th=[162530], 99.90th=[250610], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 6, max= 95, per=25.54%, avg=49.29, stdev=17.86, samples=235 iops : min= 1, max= 23, avg=11.69, stdev= 4.50, samples=235 write: IOPS=13, BW=52.8KiB/s (54.1kB/s)(6348KiB/120212msec); 0 zone resets clat (usec): min=721, max=1152.5k, avg=33832.02, stdev=43377.21 lat (usec): min=722, max=1152.5k, avg=33835.20, stdev=43376.50 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1221], 10.00th=[ 1483], | 20.00th=[ 3752], 30.00th=[ 7898], 40.00th=[ 17695], | 50.00th=[ 25297], 60.00th=[ 32900], 70.00th=[ 43254], | 80.00th=[ 55837], 90.00th=[ 80217], 95.00th=[ 99091], | 99.00th=[ 152044], 99.50th=[ 160433], 99.90th=[ 225444], | 99.95th=[1149240], 99.99th=[1149240] bw ( KiB/s): min= 7, max= 124, per=25.88%, avg=52.54, stdev=22.10, samples=235 iops : min= 1, max= 31, avg=12.51, stdev= 5.57, samples=235 lat (usec) : 50=0.23%, 100=1.43%, 250=0.20%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.23% lat (msec) : 2=6.51%, 4=4.13%, 10=6.51%, 20=11.13%, 50=41.18% lat (msec) : 100=23.54%, 250=4.65%, 500=0.07%, 2000=0.03% cpu : usr=0.08%, sys=5.13%, ctx=6335, 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=179324: Thu Aug 27 16:13:46 2026 read: IOPS=12, BW=50.2KiB/s (51.4kB/s)(6028KiB/120112msec) clat (usec): min=38, max=264320, avg=44548.89, stdev=29514.42 lat (usec): min=39, max=264321, avg=44551.90, stdev=29514.21 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10814], 10.00th=[ 16581], 20.00th=[ 22152], | 30.00th=[ 27919], 40.00th=[ 32900], 50.00th=[ 38536], 60.00th=[ 44827], | 70.00th=[ 52167], 80.00th=[ 62653], 90.00th=[ 80217], 95.00th=[100140], | 99.00th=[147850], 99.50th=[166724], 99.90th=[227541], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 7, max= 110, per=26.06%, avg=50.29, stdev=19.37, samples=234 iops : min= 1, max= 27, avg=11.94, stdev= 4.90, samples=234 write: IOPS=13, BW=52.1KiB/s (53.4kB/s)(6260KiB/120112msec); 0 zone resets clat (usec): min=599, max=1188.8k, avg=33509.18, stdev=45002.72 lat (usec): min=599, max=1188.8k, avg=33514.08, stdev=45004.92 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1188], 10.00th=[ 1352], | 20.00th=[ 2966], 30.00th=[ 6587], 40.00th=[ 14222], | 50.00th=[ 23725], 60.00th=[ 32113], 70.00th=[ 42206], | 80.00th=[ 57410], 90.00th=[ 83362], 95.00th=[ 99091], | 99.00th=[ 143655], 99.50th=[ 166724], 99.90th=[ 229639], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 7, max= 118, per=25.64%, avg=52.05, stdev=20.74, samples=235 iops : min= 1, max= 29, avg=12.38, stdev= 5.23, samples=235 lat (usec) : 50=0.26%, 100=1.53%, 250=0.07%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.26% lat (msec) : 2=7.29%, 4=4.30%, 10=6.84%, 20=10.51%, 50=40.20% lat (msec) : 100=23.70%, 250=4.85%, 500=0.03%, 2000=0.03% cpu : usr=0.08%, sys=5.10%, ctx=6206, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179325: Thu Aug 27 16:13:46 2026 read: IOPS=12, BW=50.4KiB/s (51.6kB/s)(6052KiB/120040msec) clat (usec): min=41, max=230326, avg=43463.14, stdev=26801.92 lat (usec): min=42, max=230328, avg=43465.74, stdev=26803.89 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 11731], 10.00th=[ 17171], 20.00th=[ 22676], | 30.00th=[ 27657], 40.00th=[ 32900], 50.00th=[ 39060], 60.00th=[ 44303], | 70.00th=[ 51119], 80.00th=[ 61080], 90.00th=[ 78119], 95.00th=[ 91751], | 99.00th=[135267], 99.50th=[156238], 99.90th=[189793], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 7, max= 119, per=26.21%, avg=50.58, stdev=19.19, samples=234 iops : min= 1, max= 29, avg=12.01, stdev= 4.82, samples=234 write: IOPS=12, BW=51.9KiB/s (53.2kB/s)(6236KiB/120040msec); 0 zone resets clat (usec): min=772, max=1149.4k, avg=34492.61, stdev=44876.32 lat (usec): min=773, max=1149.4k, avg=34512.50, stdev=44889.69 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1336], | 20.00th=[ 2900], 30.00th=[ 6587], 40.00th=[ 15008], | 50.00th=[ 23987], 60.00th=[ 32637], 70.00th=[ 44827], | 80.00th=[ 60031], 90.00th=[ 84411], 95.00th=[ 103285], | 99.00th=[ 139461], 99.50th=[ 156238], 99.90th=[ 270533], | 99.95th=[1149240], 99.99th=[1149240] bw ( KiB/s): min= 15, max= 110, per=25.57%, avg=51.91, stdev=20.81, samples=235 iops : min= 3, max= 27, avg=12.33, stdev= 5.24, samples=235 lat (usec) : 50=0.13%, 100=1.56%, 250=0.07%, 500=0.03%, 1000=0.29% lat (msec) : 2=7.55%, 4=4.43%, 10=5.92%, 20=10.48%, 50=40.49% lat (msec) : 100=24.38%, 250=4.59%, 500=0.03%, 2000=0.03% cpu : usr=0.08%, sys=5.03%, ctx=6242, 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=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=194KiB/s (199kB/s), 48.4KiB/s-50.4KiB/s (49.6kB/s-51.6kB/s), io=23.4MiB (24.6MB), run=120040-123830msec WRITE: bw=203KiB/s (208kB/s), 50.8KiB/s-52.8KiB/s (52.1kB/s-54.1kB/s), io=24.6MiB (25.7MB), run=120040-123830msec fio: pid=179318, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=179317: Thu Aug 27 16:14:21 2026 read: IOPS=9, BW=37.7KiB/s (38.6kB/s)(5992KiB/158839msec) clat (msec): min=4, max=1190, avg=41.03, stdev=47.90 lat (msec): min=4, max=1190, avg=41.03, stdev=47.90 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 59], 90.00th=[ 90], 95.00th=[ 126], | 99.00th=[ 188], 99.50th=[ 201], 99.90th=[ 288], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 143, per=25.84%, avg=38.50, stdev=27.22, samples=303 iops : min= 1, max= 35, avg= 8.95, stdev= 6.85, samples=303 write: IOPS=9, BW=39.6KiB/s (40.6kB/s)(6296KiB/158839msec); 0 zone resets clat (msec): min=10, max=374, avg=61.52, stdev=44.99 lat (msec): min=10, max=374, avg=61.52, stdev=44.99 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 57], | 70.00th=[ 72], 80.00th=[ 92], 90.00th=[ 124], 95.00th=[ 155], | 99.00th=[ 215], 99.50th=[ 228], 99.90th=[ 296], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 142, per=25.68%, avg=39.80, stdev=25.55, samples=308 iops : min= 1, max= 35, avg= 9.28, stdev= 6.43, samples=308 lat (msec) : 10=3.39%, 20=17.15%, 50=44.69%, 100=22.14%, 250=12.37% lat (msec) : 500=0.23%, 2000=0.03% cpu : usr=0.06%, sys=1.71%, ctx=4757, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=179318: Thu Aug 27 16:14:21 2026 read: IOPS=9, BW=36.5KiB/s (37.4kB/s)(5656KiB/155060msec) clat (msec): min=4, max=1097, avg=42.33, stdev=48.31 lat (msec): min=4, max=1097, avg=42.34, stdev=48.31 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 64], 90.00th=[ 93], 95.00th=[ 126], | 99.00th=[ 186], 99.50th=[ 220], 99.90th=[ 288], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 159, per=24.87%, avg=37.06, stdev=27.55, samples=296 iops : min= 1, max= 39, avg= 8.58, stdev= 6.92, samples=296 write: IOPS=9, BW=38.5KiB/s (39.5kB/s)(5976KiB/155060msec); 0 zone resets clat (msec): min=9, max=374, avg=63.35, stdev=45.69 lat (msec): min=9, max=374, avg=63.35, stdev=45.69 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 74], 80.00th=[ 94], 90.00th=[ 130], 95.00th=[ 155], | 99.00th=[ 220], 99.50th=[ 241], 99.90th=[ 334], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 133, per=24.78%, avg=38.40, stdev=24.67, samples=302 iops : min= 1, max= 33, avg= 8.93, stdev= 6.20, samples=302 lat (msec) : 10=3.40%, 20=16.98%, 50=42.87%, 100=23.34%, 250=13.03% lat (msec) : 500=0.31%, 2000=0.03% cpu : usr=0.06%, sys=1.64%, ctx=4224, 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=1415,1494,0,0 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: Thu Aug 27 16:14:21 2026 read: IOPS=9, BW=38.0KiB/s (38.9kB/s)(6028KiB/158567msec) clat (msec): min=4, max=289, avg=41.16, stdev=38.55 lat (msec): min=4, max=289, avg=41.16, stdev=38.55 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 62], 90.00th=[ 96], 95.00th=[ 125], | 99.00th=[ 180], 99.50th=[ 215], 99.90th=[ 266], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 159, per=26.04%, avg=38.79, stdev=27.79, samples=302 iops : min= 1, max= 39, avg= 9.01, stdev= 6.99, samples=302 write: IOPS=9, BW=39.5KiB/s (40.4kB/s)(6260KiB/158567msec); 0 zone resets clat (msec): min=6, max=1138, avg=61.35, stdev=51.47 lat (msec): min=6, max=1138, avg=61.36, stdev=51.47 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 72], 80.00th=[ 90], 90.00th=[ 123], 95.00th=[ 148], | 99.00th=[ 215], 99.50th=[ 239], 99.90th=[ 338], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 135, per=25.38%, avg=39.34, stdev=26.52, samples=309 iops : min= 1, max= 33, avg= 9.16, stdev= 6.66, samples=309 lat (msec) : 10=3.35%, 20=18.52%, 50=42.55%, 100=22.43%, 250=12.96% lat (msec) : 500=0.16%, 2000=0.03% cpu : usr=0.06%, sys=1.71%, ctx=4640, 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=179320: Thu Aug 27 16:14:21 2026 read: IOPS=9, BW=38.1KiB/s (39.0kB/s)(6052KiB/158703msec) clat (msec): min=4, max=320, avg=41.31, stdev=39.36 lat (msec): min=4, max=320, avg=41.31, stdev=39.36 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 60], 90.00th=[ 94], 95.00th=[ 124], | 99.00th=[ 192], 99.50th=[ 215], 99.90th=[ 266], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 7, max= 142, per=26.12%, avg=38.92, stdev=27.66, samples=302 iops : min= 1, max= 35, avg= 9.05, stdev= 6.96, samples=302 write: IOPS=9, BW=39.3KiB/s (40.2kB/s)(6236KiB/158703msec); 0 zone resets clat (msec): min=9, max=1125, avg=61.38, stdev=50.60 lat (msec): min=9, max=1125, avg=61.38, stdev=50.60 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 71], 80.00th=[ 91], 90.00th=[ 120], 95.00th=[ 146], | 99.00th=[ 218], 99.50th=[ 243], 99.90th=[ 334], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 127, per=25.42%, avg=39.40, stdev=24.82, samples=307 iops : min= 1, max= 31, avg= 9.17, stdev= 6.23, samples=307 lat (msec) : 10=3.03%, 20=17.97%, 50=43.49%, 100=22.92%, 250=12.30% lat (msec) : 500=0.26%, 2000=0.03% cpu : usr=0.06%, sys=1.78%, ctx=4797, 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=149KiB/s (153kB/s), 36.5KiB/s-38.1KiB/s (37.4kB/s-39.0kB/s), io=23.2MiB (24.3MB), run=155060-158839msec WRITE: bw=156KiB/s (160kB/s), 38.5KiB/s-39.6KiB/s (39.5kB/s-40.6kB/s), io=24.2MiB (25.4MB), run=155060-158839msec 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=179363: Thu Aug 27 16:15:04 2026 read: IOPS=11, BW=187KiB/s (191kB/s)(5920KiB/31686msec) clat (usec): min=40, max=244183, avg=45804.66, stdev=34436.81 lat (usec): min=40, max=244185, avg=45808.14, stdev=34436.48 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 62], 10.00th=[ 77], 20.00th=[ 20579], | 30.00th=[ 27657], 40.00th=[ 34341], 50.00th=[ 41681], 60.00th=[ 47449], | 70.00th=[ 56361], 80.00th=[ 66323], 90.00th=[ 90702], 95.00th=[106431], | 99.00th=[164627], 99.50th=[183501], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 61, max= 447, per=25.43%, avg=185.13, stdev=66.94, samples=62 iops : min= 3, max= 27, avg=10.79, stdev= 4.26, samples=62 write: IOPS=12, BW=201KiB/s (206kB/s)(6368KiB/31686msec); 0 zone resets clat (usec): min=1342, max=256154, avg=36775.83, stdev=35636.72 lat (usec): min=1343, max=256158, avg=36782.27, stdev=35640.02 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1795], 10.00th=[ 2573], 20.00th=[ 6718], | 30.00th=[ 11076], 40.00th=[ 19268], 50.00th=[ 26084], 60.00th=[ 35390], | 70.00th=[ 45876], 80.00th=[ 61604], 90.00th=[ 89654], 95.00th=[107480], | 99.00th=[156238], 99.50th=[166724], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 31, max= 448, per=26.14%, avg=200.23, stdev=87.61, samples=62 iops : min= 1, max= 28, avg=11.76, stdev= 5.59, samples=62 lat (usec) : 50=0.65%, 100=4.82%, 250=0.39%, 500=0.13%, 750=0.13% lat (msec) : 2=4.17%, 4=3.52%, 10=7.03%, 20=10.16%, 50=37.11% lat (msec) : 100=25.13%, 250=6.64%, 500=0.13% cpu : usr=0.07%, sys=5.66%, ctx=1607, 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=179364: Thu Aug 27 16:15:04 2026 read: IOPS=11, BW=176KiB/s (180kB/s)(5744KiB/32633msec) clat (usec): min=41, max=201540, avg=48889.28, stdev=32393.16 lat (usec): min=41, max=201541, avg=48890.54, stdev=32393.16 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 67], 10.00th=[ 9896], 20.00th=[ 24249], | 30.00th=[ 30540], 40.00th=[ 38011], 50.00th=[ 44303], 60.00th=[ 51643], | 70.00th=[ 60031], 80.00th=[ 71828], 90.00th=[ 86508], 95.00th=[109577], | 99.00th=[162530], 99.50th=[183501], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 21, max= 350, per=24.23%, avg=176.42, stdev=77.72, samples=64 iops : min= 1, max= 21, avg=10.33, stdev= 4.84, samples=64 write: IOPS=12, BW=201KiB/s (205kB/s)(6544KiB/32633msec); 0 zone resets clat (usec): min=1089, max=160978, avg=36024.76, stdev=34762.86 lat (usec): min=1091, max=160979, avg=36027.00, stdev=34762.80 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1811], 10.00th=[ 2442], 20.00th=[ 5604], | 30.00th=[ 9896], 40.00th=[ 16581], 50.00th=[ 26608], 60.00th=[ 35914], | 70.00th=[ 46924], 80.00th=[ 63177], 90.00th=[ 83362], 95.00th=[109577], | 99.00th=[145753], 99.50th=[152044], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 31, max= 478, per=26.24%, avg=201.03, stdev=93.48, samples=64 iops : min= 1, max= 29, avg=11.83, stdev= 5.91, samples=64 lat (usec) : 50=0.13%, 100=3.78%, 500=0.26% lat (msec) : 2=4.17%, 4=4.30%, 10=8.46%, 20=9.24%, 50=35.03% lat (msec) : 100=28.39%, 250=6.25% cpu : usr=0.09%, sys=5.76%, ctx=1637, 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=179367: Thu Aug 27 16:15:04 2026 read: IOPS=11, BW=190KiB/s (195kB/s)(6256KiB/32883msec) clat (usec): min=40, max=215335, avg=44479.18, stdev=31659.03 lat (usec): min=41, max=215337, avg=44480.57, stdev=31659.02 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 147], 20.00th=[ 20317], | 30.00th=[ 28181], 40.00th=[ 34866], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 53740], 80.00th=[ 64226], 90.00th=[ 82314], 95.00th=[ 96994], | 99.00th=[162530], 99.50th=[206570], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 31, max= 382, per=26.28%, avg=191.31, stdev=67.69, samples=64 iops : min= 1, max= 23, avg=11.22, stdev= 4.33, samples=64 write: IOPS=11, BW=183KiB/s (188kB/s)(6032KiB/32883msec); 0 zone resets clat (usec): min=1110, max=200307, avg=40056.47, stdev=39144.96 lat (usec): min=1112, max=200311, avg=40059.12, stdev=39144.76 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1778], 10.00th=[ 2180], 20.00th=[ 5538], | 30.00th=[ 11600], 40.00th=[ 18482], 50.00th=[ 29492], 60.00th=[ 39060], | 70.00th=[ 52167], 80.00th=[ 68682], 90.00th=[ 89654], 95.00th=[123208], | 99.00th=[170918], 99.50th=[181404], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 31, max= 414, per=23.59%, avg=180.73, stdev=85.11, samples=64 iops : min= 1, max= 25, avg=10.55, stdev= 5.29, samples=64 lat (usec) : 50=0.52%, 100=4.30%, 250=0.52%, 1000=0.13% lat (msec) : 2=4.04%, 4=3.65%, 10=6.12%, 20=10.55%, 50=36.33% lat (msec) : 100=28.26%, 250=5.60% cpu : usr=0.05%, sys=5.67%, ctx=1645, 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=179370: Thu Aug 27 16:15:04 2026 read: IOPS=12, BW=193KiB/s (198kB/s)(6032KiB/31197msec) clat (usec): min=39, max=208876, avg=44867.04, stdev=30642.88 lat (usec): min=39, max=208877, avg=44868.35, stdev=30642.87 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 61], 10.00th=[ 147], 20.00th=[ 21103], | 30.00th=[ 27919], 40.00th=[ 34341], 50.00th=[ 42206], 60.00th=[ 48497], | 70.00th=[ 56361], 80.00th=[ 68682], 90.00th=[ 83362], 95.00th=[ 95945], | 99.00th=[128451], 99.50th=[187696], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 63, max= 415, per=26.85%, avg=195.47, stdev=60.53, samples=60 iops : min= 3, max= 25, avg=11.45, stdev= 3.84, samples=60 write: IOPS=12, BW=201KiB/s (205kB/s)(6256KiB/31197msec); 0 zone resets clat (usec): min=1148, max=193699, avg=35664.28, stdev=35562.16 lat (usec): min=1150, max=193701, avg=35670.80, stdev=35575.00 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1795], 10.00th=[ 2507], 20.00th=[ 5342], | 30.00th=[ 8717], 40.00th=[ 15664], 50.00th=[ 24249], 60.00th=[ 34866], | 70.00th=[ 44303], 80.00th=[ 62653], 90.00th=[ 91751], 95.00th=[106431], | 99.00th=[145753], 99.50th=[160433], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 93, max= 413, per=26.28%, avg=201.33, stdev=77.93, samples=61 iops : min= 5, max= 25, avg=11.84, stdev= 4.92, samples=61 lat (usec) : 50=0.65%, 100=3.78%, 250=0.65%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=4.17%, 4=3.65%, 10=8.98%, 20=9.38%, 50=36.07% lat (msec) : 100=26.69%, 250=5.47% cpu : usr=0.05%, sys=5.40%, ctx=1573, 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=728KiB/s (746kB/s), 176KiB/s-193KiB/s (180kB/s-198kB/s), io=23.4MiB (24.5MB), run=31197-32883msec WRITE: bw=766KiB/s (785kB/s), 183KiB/s-201KiB/s (188kB/s-206kB/s), io=24.6MiB (25.8MB), run=31197-32883msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179365: Thu Aug 27 16:15:17 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(5920KiB/45446msec) clat (msec): min=7, max=327, avg=49.40, stdev=42.56 lat (msec): min=7, max=327, avg=49.40, stdev=42.56 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 52], 80.00th=[ 72], 90.00th=[ 110], 95.00th=[ 142], | 99.00th=[ 194], 99.50th=[ 247], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 30, max= 540, per=25.11%, avg=130.59, stdev=87.01, samples=88 iops : min= 1, max= 33, avg= 7.35, stdev= 5.44, samples=88 write: IOPS=8, BW=140KiB/s (143kB/s)(6368KiB/45446msec); 0 zone resets clat (msec): min=9, max=370, avg=68.09, stdev=46.98 lat (msec): min=9, max=370, avg=68.09, stdev=46.98 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 37], 40.00th=[ 47], 50.00th=[ 58], 60.00th=[ 67], | 70.00th=[ 81], 80.00th=[ 99], 90.00th=[ 131], 95.00th=[ 161], | 99.00th=[ 215], 99.50th=[ 347], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 31, max= 446, per=25.80%, avg=141.13, stdev=84.39, samples=88 iops : min= 1, max= 27, avg= 8.01, stdev= 5.30, samples=88 lat (msec) : 10=1.30%, 20=11.20%, 50=42.84%, 100=29.56%, 250=14.71% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=1.75%, ctx=1222, 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=179366: Thu Aug 27 16:15:17 2026 read: IOPS=7, BW=125KiB/s (128kB/s)(5744KiB/46033msec) clat (msec): min=8, max=247, avg=46.64, stdev=41.02 lat (msec): min=8, max=247, avg=46.66, stdev=41.02 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 52], 80.00th=[ 66], 90.00th=[ 106], 95.00th=[ 138], | 99.00th=[ 207], 99.50th=[ 209], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 31, max= 540, per=24.77%, avg=128.82, stdev=94.24, samples=88 iops : min= 1, max= 33, avg= 7.24, stdev= 5.91, samples=88 write: IOPS=8, BW=142KiB/s (146kB/s)(6544KiB/46033msec); 0 zone resets clat (msec): min=15, max=375, avg=70.78, stdev=49.41 lat (msec): min=15, max=375, avg=70.78, stdev=49.41 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 25], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 48], 50.00th=[ 57], 60.00th=[ 65], | 70.00th=[ 83], 80.00th=[ 108], 90.00th=[ 140], 95.00th=[ 165], | 99.00th=[ 220], 99.50th=[ 247], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 31, max= 413, per=26.19%, avg=143.24, stdev=82.98, samples=90 iops : min= 1, max= 25, avg= 8.14, stdev= 5.22, samples=90 lat (msec) : 10=0.52%, 20=13.54%, 50=41.41%, 100=28.13%, 250=16.15% lat (msec) : 500=0.26% cpu : usr=0.07%, sys=1.62%, ctx=1157, 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=179368: Thu Aug 27 16:15:17 2026 read: IOPS=8, BW=138KiB/s (141kB/s)(6256KiB/45340msec) clat (msec): min=8, max=243, avg=50.06, stdev=43.44 lat (msec): min=8, max=243, avg=50.06, stdev=43.44 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 54], 80.00th=[ 69], 90.00th=[ 113], 95.00th=[ 157], | 99.00th=[ 201], 99.50th=[ 226], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 31, max= 509, per=26.92%, avg=140.00, stdev=97.60, samples=88 iops : min= 1, max= 31, avg= 7.94, stdev= 6.12, samples=88 write: IOPS=8, BW=133KiB/s (136kB/s)(6032KiB/45340msec); 0 zone resets clat (msec): min=13, max=259, avg=67.67, stdev=47.15 lat (msec): min=13, max=259, avg=67.67, stdev=47.15 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 37], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 66], | 70.00th=[ 79], 80.00th=[ 95], 90.00th=[ 136], 95.00th=[ 174], | 99.00th=[ 224], 99.50th=[ 253], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 31, max= 445, per=24.69%, avg=135.05, stdev=80.15, samples=87 iops : min= 1, max= 27, avg= 7.62, stdev= 5.05, samples=87 lat (msec) : 10=1.30%, 20=12.89%, 50=42.71%, 100=28.52%, 250=14.19% lat (msec) : 500=0.39% cpu : usr=0.07%, sys=1.72%, ctx=1260, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179369: Thu Aug 27 16:15:17 2026 read: IOPS=8, BW=132KiB/s (136kB/s)(6032KiB/45575msec) clat (msec): min=6, max=250, avg=50.20, stdev=40.35 lat (msec): min=6, max=250, avg=50.21, stdev=40.35 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 46], | 70.00th=[ 57], 80.00th=[ 72], 90.00th=[ 110], 95.00th=[ 140], | 99.00th=[ 201], 99.50th=[ 226], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 31, max= 478, per=25.88%, avg=134.60, stdev=79.56, samples=87 iops : min= 1, max= 29, avg= 7.57, stdev= 4.98, samples=87 write: IOPS=8, BW=137KiB/s (141kB/s)(6256KiB/45575msec); 0 zone resets clat (msec): min=13, max=239, avg=67.21, stdev=43.48 lat (msec): min=13, max=239, avg=67.21, stdev=43.48 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 68], | 70.00th=[ 80], 80.00th=[ 96], 90.00th=[ 124], 95.00th=[ 161], | 99.00th=[ 226], 99.50th=[ 232], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 31, max= 414, per=25.10%, avg=137.30, stdev=84.50, samples=89 iops : min= 1, max= 25, avg= 7.75, stdev= 5.30, samples=89 lat (msec) : 10=0.78%, 20=10.29%, 50=42.97%, 100=31.12%, 250=14.71% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=1.81%, ctx=1221, 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=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=520KiB/s (533kB/s), 125KiB/s-138KiB/s (128kB/s-141kB/s), io=23.4MiB (24.5MB), run=45340-46033msec WRITE: bw=547KiB/s (561kB/s), 133KiB/s-142KiB/s (136kB/s-146kB/s), io=24.6MiB (25.8MB), run=45340-46033msec 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=179388: Thu Aug 27 16:15:35 2026 read: IOPS=2, BW=2340KiB/s (2396kB/s)(7168KiB/3063msec) clat (msec): min=4, max=414, avg=204.64, stdev=132.59 lat (msec): min=4, max=414, avg=204.64, stdev=132.59 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 138], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 182], 60.00th=[ 194], | 70.00th=[ 194], 80.00th=[ 326], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 1771, max= 4096, per=86.65%, avg=2918.33, stdev=1162.80, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 write: IOPS=1, BW=1672KiB/s (1712kB/s)(5120KiB/3063msec); 0 zone resets clat (msec): min=178, max=439, avg=284.58, stdev=108.47 lat (msec): min=178, max=440, avg=284.74, stdev=108.55 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 439], 95.00th=[ 439], | 99.00th=[ 439], 99.50th=[ 439], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 1771, max= 3968, per=54.41%, avg=2565.33, stdev=1218.30, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 10=8.33%, 250=50.00%, 500=41.67% cpu : usr=0.00%, sys=17.11%, ctx=266, 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=179389: Thu Aug 27 16:15:35 2026 read: IOPS=0, BW=337KiB/s (345kB/s)(2048KiB/6080msec) clat (msec): min=2, max=179, avg=90.63, stdev=125.27 lat (msec): min=2, max=179, avg=90.64, stdev=125.27 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= 2011, max= 2039, per=60.12%, avg=2025.00, stdev=19.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1684KiB/s (1725kB/s)(10.0MiB/6080msec); 0 zone resets clat (msec): min=171, max=1206, avg=578.29, stdev=309.52 lat (msec): min=171, max=1206, avg=578.42, stdev=309.53 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 236], | 30.00th=[ 414], 40.00th=[ 422], 50.00th=[ 472], 60.00th=[ 592], | 70.00th=[ 634], 80.00th=[ 802], 90.00th=[ 844], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 1954, max= 4071, per=54.60%, avg=2574.43, stdev=956.27, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (msec) : 4=8.33%, 250=25.00%, 500=25.00%, 750=16.67%, 1000=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=9.95%, ctx=168, 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=179390: Thu Aug 27 16:15:35 2026 read: IOPS=1, BW=1342KiB/s (1375kB/s)(6144KiB/4577msec) clat (usec): min=678, max=391288, avg=212727.76, stdev=135585.42 lat (usec): min=679, max=391290, avg=212729.77, stdev=135585.86 clat percentiles (usec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[147850], | 30.00th=[147850], 40.00th=[177210], 50.00th=[177210], 60.00th=[267387], | 70.00th=[291505], 80.00th=[291505], 90.00th=[392168], 95.00th=[392168], | 99.00th=[392168], 99.50th=[392168], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 3915, max= 5930, per=100.00%, avg=4922.50, stdev=1424.82, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1342KiB/s (1375kB/s)(6144KiB/4577msec); 0 zone resets clat (msec): min=167, max=1055, avg=524.82, stdev=332.82 lat (msec): min=167, max=1055, avg=524.93, stdev=332.83 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 502], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 1519, max= 2043, per=39.42%, avg=1858.60, stdev=215.94, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=50.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=12.87%, ctx=187, 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=179391: Thu Aug 27 16:15:35 2026 read: IOPS=1, BW=1215KiB/s (1244kB/s)(5120KiB/4214msec) clat (usec): min=633, max=325368, avg=210120.31, stdev=140582.87 lat (usec): min=634, max=325369, avg=210135.73, stdev=140594.56 clat percentiles (usec): | 1.00th=[ 635], 5.00th=[ 635], 10.00th=[ 635], 20.00th=[ 635], | 30.00th=[129500], 40.00th=[129500], 50.00th=[291505], 60.00th=[291505], | 70.00th=[304088], 80.00th=[304088], 90.00th=[325059], 95.00th=[325059], | 99.00th=[325059], 99.50th=[325059], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 3915, max= 4063, per=100.00%, avg=3989.00, stdev=104.65, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1701KiB/s (1742kB/s)(7168KiB/4214msec); 0 zone resets clat (msec): min=195, max=909, avg=414.79, stdev=243.87 lat (msec): min=195, max=909, avg=415.18, stdev=243.95 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 220], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 376], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 493], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1556, max= 3968, per=50.98%, avg=2403.75, stdev=1068.06, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=58.33%, 1000=8.33% cpu : usr=0.02%, sys=13.58%, ctx=203, 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=3368KiB/s (3449kB/s), 337KiB/s-2340KiB/s (345kB/s-2396kB/s), io=20.0MiB (20.0MB), run=3063-6080msec WRITE: bw=4716KiB/s (4829kB/s), 1342KiB/s-1701KiB/s (1375kB/s-1742kB/s), io=28.0MiB (29.4MB), run=3063-6080msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179384: Thu Aug 27 16:15:36 2026 read: IOPS=1, BW=1815KiB/s (1858kB/s)(7168KiB/3950msec) clat (msec): min=88, max=486, avg=236.70, stdev=161.85 lat (msec): min=88, max=486, avg=236.70, stdev=161.85 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 129], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 163], 60.00th=[ 205], | 70.00th=[ 205], 80.00th=[ 447], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 1460, max= 3923, per=70.64%, avg=2251.40, stdev=963.21, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1296KiB/s (1327kB/s)(5120KiB/3950msec); 0 zone resets clat (msec): min=140, max=630, avg=402.03, stdev=206.25 lat (msec): min=140, max=630, avg=402.14, stdev=206.26 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1957, max= 4087, per=56.56%, avg=2523.50, stdev=1042.84, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=4.66%, ctx=97, 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=179385: Thu Aug 27 16:15:36 2026 read: IOPS=0, BW=319KiB/s (326kB/s)(2048KiB/6425msec) clat (msec): min=141, max=188, avg=165.28, stdev=33.15 lat (msec): min=141, max=188, avg=165.28, stdev=33.15 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 188], | 70.00th=[ 188], 80.00th=[ 188], 90.00th=[ 188], 95.00th=[ 188], | 99.00th=[ 188], 99.50th=[ 188], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 1391, max= 1980, per=52.89%, avg=1685.50, stdev=416.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1594KiB/s (1632kB/s)(10.0MiB/6425msec); 0 zone resets clat (msec): min=101, max=1256, avg=605.56, stdev=463.27 lat (msec): min=102, max=1256, avg=605.77, stdev=463.23 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 161], | 30.00th=[ 284], 40.00th=[ 296], 50.00th=[ 359], 60.00th=[ 363], | 70.00th=[ 885], 80.00th=[ 1150], 90.00th=[ 1200], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 1391, max= 2031, per=42.42%, avg=1892.57, stdev=233.82, samples=7 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=7 lat (msec) : 250=33.33%, 500=33.33%, 1000=8.33%, 2000=25.00% cpu : usr=0.00%, sys=4.97%, ctx=118, 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=179386: Thu Aug 27 16:15:36 2026 read: IOPS=1, BW=1078KiB/s (1104kB/s)(6144KiB/5697msec) clat (msec): min=91, max=857, avg=282.44, stdev=293.39 lat (msec): min=91, max=857, avg=282.44, stdev=293.39 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 109], | 30.00th=[ 109], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 176], | 70.00th=[ 321], 80.00th=[ 321], 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= 1957, max= 3961, per=77.95%, avg=2484.25, stdev=984.97, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1078KiB/s (1104kB/s)(6144KiB/5697msec); 0 zone resets clat (msec): min=210, max=1038, avg=643.11, stdev=381.61 lat (msec): min=210, max=1038, avg=643.35, stdev=381.52 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 953], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1385, max= 1988, per=40.91%, avg=1825.20, stdev=256.35, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 1000=25.00%, 2000=8.33% cpu : usr=0.04%, sys=3.65%, ctx=82, 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=179387: Thu Aug 27 16:15:36 2026 read: IOPS=0, BW=811KiB/s (830kB/s)(5120KiB/6314msec) clat (msec): min=126, max=1532, avg=418.81, stdev=622.65 lat (msec): min=126, max=1532, avg=418.81, stdev=622.65 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 127], | 30.00th=[ 134], 40.00th=[ 134], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 165], 80.00th=[ 165], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 3976, max= 4087, per=100.00%, avg=4031.50, stdev=78.49, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1135KiB/s (1163kB/s)(7168KiB/6314msec); 0 zone resets clat (msec): min=163, max=1319, avg=567.68, stdev=458.69 lat (msec): min=164, max=1319, avg=567.79, stdev=458.69 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 174], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 468], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 1099], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 1957, max= 2043, per=45.17%, avg=2015.40, stdev=33.78, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=50.00%, 500=25.00%, 2000=25.00% cpu : usr=0.00%, sys=3.14%, ctx=103, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3188KiB/s (3264kB/s), 319KiB/s-1815KiB/s (326kB/s-1858kB/s), io=20.0MiB (20.0MB), run=3950-6425msec WRITE: bw=4463KiB/s (4570kB/s), 1078KiB/s-1594KiB/s (1104kB/s-1632kB/s), io=28.0MiB (29.4MB), run=3950-6425msec 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=179403: Thu Aug 27 16:15:56 2026 read: IOPS=0, BW=2301KiB/s (2356kB/s)(12.0MiB/5340msec) clat (msec): min=694, max=3820, avg=1754.86, stdev=1788.82 lat (msec): min=694, max=3820, avg=1754.86, stdev=1788.82 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 3809], 80.00th=[ 3809], 90.00th=[ 3809], 95.00th=[ 3809], | 99.00th=[ 3809], 99.50th=[ 3809], 99.90th=[ 3809], 99.95th=[ 3809], | 99.99th=[ 3809] bw ( KiB/s): min= 8000, max= 8110, per=100.00%, avg=8055.00, stdev=77.78, 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=7.36%, ctx=549, 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=179404: Thu Aug 27 16:15:56 2026 read: IOPS=0, BW=786KiB/s (805kB/s)(4096KiB/5211msec) clat (nsec): min=3967.1M, max=3967.1M, avg=3967134658.00, stdev= 0.00 lat (nsec): min=3967.1M, max=3967.1M, avg=3967137843.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3977], 5.00th=[ 3977], 10.00th=[ 3977], 20.00th=[ 3977], | 30.00th=[ 3977], 40.00th=[ 3977], 50.00th=[ 3977], 60.00th=[ 3977], | 70.00th=[ 3977], 80.00th=[ 3977], 90.00th=[ 3977], 95.00th=[ 3977], | 99.00th=[ 3977], 99.50th=[ 3977], 99.90th=[ 3977], 99.95th=[ 3977], | 99.99th=[ 3977] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1572KiB/s (1610kB/s)(8192KiB/5211msec); 0 zone resets clat (msec): min=560, max=616, avg=588.44, stdev=39.78 lat (msec): min=561, max=617, avg=589.03, stdev=39.59 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 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= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.08%, sys=3.78%, ctx=415, 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=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=179405: Thu Aug 27 16:15:56 2026 write: IOPS=0, BW=1991KiB/s (2039kB/s)(12.0MiB/6171msec); 0 zone resets clat (msec): min=275, max=4960, avg=2005.83, stdev=2570.87 lat (msec): min=278, max=4961, avg=2007.36, stdev=2570.74 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 4933], 80.00th=[ 4933], 90.00th=[ 4933], 95.00th=[ 4933], | 99.00th=[ 4933], 99.50th=[ 4933], 99.90th=[ 4933], 99.95th=[ 4933], | 99.99th=[ 4933] bw ( KiB/s): min= 8047, max= 8110, per=100.00%, avg=8078.50, stdev=44.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.90%, 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=179406: Thu Aug 27 16:15:56 2026 write: IOPS=0, BW=2044KiB/s (2093kB/s)(12.0MiB/6012msec); 0 zone resets clat (msec): min=247, max=5380, avg=1971.68, stdev=2952.40 lat (msec): min=251, max=5381, avg=1973.30, stdev=2951.65 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 5403], 80.00th=[ 5403], 90.00th=[ 5403], 95.00th=[ 5403], | 99.00th=[ 5403], 99.50th=[ 5403], 99.90th=[ 5403], 99.95th=[ 5403], | 99.99th=[ 5403] bw ( KiB/s): min= 7160, max= 8126, per=100.00%, avg=7643.00, stdev=683.07, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.48%, ctx=42, 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=3068KiB/s (3142kB/s), 786KiB/s-2301KiB/s (805kB/s-2356kB/s), io=16.0MiB (16.8MB), run=5211-5340msec WRITE: bw=5310KiB/s (5437kB/s), 1572KiB/s-2044KiB/s (1610kB/s-2093kB/s), io=32.0MiB (33.6MB), run=5211-6171msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179398: Thu Aug 27 16:15:56 2026 read: IOPS=2, BW=11.7MiB/s (12.3MB/s)(12.0MiB/1025msec) clat (msec): min=244, max=387, avg=316.15, stdev=71.60 lat (msec): min=244, max=387, avg=316.15, stdev=71.60 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 7098, max= 7098, per=100.00%, avg=7098.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=66.67% cpu : usr=0.10%, sys=10.45%, ctx=50, 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=179399: Thu Aug 27 16:15:56 2026 read: IOPS=0, BW=683KiB/s (699kB/s)(4096KiB/5999msec) clat (nsec): min=4345.9M, max=4345.9M, avg=4345939367.00, stdev= 0.00 lat (nsec): min=4345.9M, max=4345.9M, avg=4345941949.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4329], 5.00th=[ 4329], 10.00th=[ 4329], 20.00th=[ 4329], | 30.00th=[ 4329], 40.00th=[ 4329], 50.00th=[ 4329], 60.00th=[ 4329], | 70.00th=[ 4329], 80.00th=[ 4329], 90.00th=[ 4329], 95.00th=[ 4329], | 99.00th=[ 4329], 99.50th=[ 4329], 99.90th=[ 4329], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 7876, max= 7876, per=100.00%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1366KiB/s (1398kB/s)(8192KiB/5999msec); 0 zone resets clat (msec): min=495, max=1077, avg=786.55, stdev=411.22 lat (msec): min=499, max=1080, avg=790.05, stdev=410.46 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.53%, ctx=55, 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=179400: Thu Aug 27 16:15:56 2026 write: IOPS=0, BW=1714KiB/s (1755kB/s)(12.0MiB/7170msec); 0 zone resets clat (msec): min=188, max=6533, avg=2315.05, stdev=3653.60 lat (msec): min=188, max=6539, avg=2317.32, stdev=3656.60 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 224], | 70.00th=[ 6544], 80.00th=[ 6544], 90.00th=[ 6544], 95.00th=[ 6544], | 99.00th=[ 6544], 99.50th=[ 6544], 99.90th=[ 6544], 99.95th=[ 6544], | 99.99th=[ 6544] bw ( KiB/s): min=15937, max=15937, per=100.00%, avg=15937.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=1.58%, ctx=69, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179401: Thu Aug 27 16:15:56 2026 write: IOPS=0, BW=2049KiB/s (2098kB/s)(12.0MiB/5997msec); 0 zone resets clat (msec): min=292, max=5193, avg=1935.53, stdev=2821.38 lat (msec): min=292, max=5193, avg=1936.10, stdev=2821.41 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 5201], 80.00th=[ 5201], 90.00th=[ 5201], 95.00th=[ 5201], | 99.00th=[ 5201], 99.50th=[ 5201], 99.90th=[ 5201], 99.95th=[ 5201], | 99.99th=[ 5201] bw ( KiB/s): min= 5595, max= 8143, per=100.00%, avg=6869.00, stdev=1801.71, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.03%, sys=1.88%, 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=2731KiB/s (2797kB/s), 683KiB/s-11.7MiB/s (699kB/s-12.3MB/s), io=16.0MiB (16.8MB), run=1025-5999msec WRITE: bw=4570KiB/s (4680kB/s), 1366KiB/s-2049KiB/s (1398kB/s-2098kB/s), io=32.0MiB (33.6MB), run=5997-7170msec