== sanity test 398b: DIO and buffer IO race ============== 05:14:45 (1788599685) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.39295 s, 9.3 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179349: Sat Sep 5 05:17:00 2026 read: IOPS=13, BW=54.5KiB/s (55.9kB/s)(5992KiB/109860msec) clat (usec): min=33, max=998244, avg=40760.06, stdev=36571.03 lat (usec): min=33, max=998245, avg=40761.41, stdev=36571.01 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10683], 10.00th=[ 15008], 20.00th=[ 20055], | 30.00th=[ 25035], 40.00th=[ 29230], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 48497], 80.00th=[ 57410], 90.00th=[ 71828], 95.00th=[ 88605], | 99.00th=[145753], 99.50th=[168821], 99.90th=[244319], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 119, per=25.22%, avg=54.22, stdev=20.37, samples=216 iops : min= 1, max= 29, avg=12.90, stdev= 5.14, samples=216 write: IOPS=14, BW=57.3KiB/s (58.7kB/s)(6296KiB/109860msec); 0 zone resets clat (usec): min=785, max=207993, avg=30736.15, stdev=31576.05 lat (usec): min=786, max=207995, avg=30739.31, stdev=31576.20 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1221], 10.00th=[ 1450], 20.00th=[ 3261], | 30.00th=[ 5866], 40.00th=[ 13829], 50.00th=[ 22414], 60.00th=[ 30540], | 70.00th=[ 40633], 80.00th=[ 53740], 90.00th=[ 72877], 95.00th=[ 92799], | 99.00th=[137364], 99.50th=[149947], 99.90th=[185598], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 7, max= 133, per=25.56%, avg=57.51, stdev=23.33, samples=214 iops : min= 1, max= 33, avg=13.73, stdev= 5.89, samples=214 lat (usec) : 50=0.16%, 100=1.43%, 250=0.16%, 500=0.03%, 1000=0.20% lat (msec) : 2=6.80%, 4=5.31%, 10=6.80%, 20=12.47%, 50=41.86% lat (msec) : 100=21.16%, 250=3.58%, 1000=0.03% cpu : usr=0.09%, sys=5.04%, ctx=6347, 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=179350: Sat Sep 5 05:17:00 2026 read: IOPS=13, BW=53.4KiB/s (54.7kB/s)(5940KiB/111239msec) clat (usec): min=46, max=202235, avg=41018.31, stdev=26596.07 lat (usec): min=46, max=202236, avg=41019.98, stdev=26596.04 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 11076], 10.00th=[ 15139], 20.00th=[ 19792], | 30.00th=[ 24511], 40.00th=[ 29492], 50.00th=[ 35390], 60.00th=[ 42730], | 70.00th=[ 49546], 80.00th=[ 57410], 90.00th=[ 74974], 95.00th=[ 92799], | 99.00th=[124257], 99.50th=[149947], 99.90th=[181404], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 15, max= 116, per=24.73%, avg=53.17, stdev=19.74, samples=217 iops : min= 3, max= 29, avg=12.64, stdev= 4.99, samples=217 write: IOPS=14, BW=57.1KiB/s (58.4kB/s)(6348KiB/111239msec); 0 zone resets clat (usec): min=675, max=1239.7k, avg=31409.77, stdev=44073.46 lat (usec): min=676, max=1239.7k, avg=31412.07, stdev=44073.07 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1352], | 20.00th=[ 2802], 30.00th=[ 5866], 40.00th=[ 13304], | 50.00th=[ 21103], 60.00th=[ 29230], 70.00th=[ 40633], | 80.00th=[ 54789], 90.00th=[ 77071], 95.00th=[ 93848], | 99.00th=[ 132645], 99.50th=[ 162530], 99.90th=[ 204473], | 99.95th=[1233126], 99.99th=[1233126] bw ( KiB/s): min= 15, max= 144, per=25.18%, avg=56.66, stdev=22.34, samples=217 iops : min= 3, max= 36, avg=13.51, stdev= 5.61, samples=217 lat (usec) : 50=0.07%, 100=1.46%, 250=0.16%, 750=0.03%, 1000=0.26% lat (msec) : 2=7.52%, 4=4.88%, 10=6.71%, 20=13.90%, 50=38.90% lat (msec) : 100=21.88%, 250=4.20%, 2000=0.03% cpu : usr=0.08%, sys=5.06%, ctx=6478, 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=179351: Sat Sep 5 05:17:00 2026 read: IOPS=13, BW=54.8KiB/s (56.1kB/s)(6028KiB/110032msec) clat (usec): min=32, max=1225.2k, avg=40249.97, stdev=40380.81 lat (usec): min=32, max=1225.2k, avg=40254.44, stdev=40381.63 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 1598], 10.00th=[ 14353], | 20.00th=[ 20055], 30.00th=[ 23987], 40.00th=[ 28443], | 50.00th=[ 33817], 60.00th=[ 40109], 70.00th=[ 46924], | 80.00th=[ 56886], 90.00th=[ 73925], 95.00th=[ 86508], | 99.00th=[ 141558], 99.50th=[ 154141], 99.90th=[ 204473], | 99.95th=[1233126], 99.99th=[1233126] bw ( KiB/s): min= 7, max= 118, per=25.36%, avg=54.52, stdev=22.10, samples=216 iops : min= 1, max= 29, avg=12.97, stdev= 5.56, samples=216 write: IOPS=14, BW=56.9KiB/s (58.3kB/s)(6260KiB/110032msec); 0 zone resets clat (usec): min=801, max=221782, avg=31267.56, stdev=31702.85 lat (usec): min=802, max=221783, avg=31269.57, stdev=31702.61 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1221], 10.00th=[ 1483], 20.00th=[ 3195], | 30.00th=[ 6718], 40.00th=[ 15139], 50.00th=[ 23462], 60.00th=[ 30802], | 70.00th=[ 41157], 80.00th=[ 52691], 90.00th=[ 74974], 95.00th=[ 93848], | 99.00th=[133694], 99.50th=[149947], 99.90th=[217056], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 15, max= 135, per=25.26%, avg=56.83, stdev=23.81, samples=215 iops : min= 3, max= 33, avg=13.56, stdev= 6.01, samples=215 lat (usec) : 50=0.33%, 100=1.86%, 250=0.20%, 500=0.07%, 1000=0.42% lat (msec) : 2=6.84%, 4=4.92%, 10=5.73%, 20=12.83%, 50=42.97% lat (msec) : 100=20.38%, 250=3.45%, 2000=0.03% cpu : usr=0.07%, sys=5.23%, ctx=6472, 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=179352: Sat Sep 5 05:17:00 2026 read: IOPS=13, BW=54.2KiB/s (55.5kB/s)(6052KiB/111638msec) clat (usec): min=34, max=233727, avg=41280.41, stdev=27442.25 lat (usec): min=34, max=233727, avg=41283.94, stdev=27442.06 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 8717], 10.00th=[ 14484], 20.00th=[ 20055], | 30.00th=[ 25035], 40.00th=[ 30278], 50.00th=[ 35914], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 58983], 90.00th=[ 73925], 95.00th=[ 92799], | 99.00th=[137364], 99.50th=[156238], 99.90th=[191890], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 7, max= 120, per=25.20%, avg=54.18, stdev=19.91, samples=217 iops : min= 1, max= 30, avg=12.89, stdev= 5.00, samples=217 write: IOPS=13, BW=55.9KiB/s (57.2kB/s)(6236KiB/111638msec); 0 zone resets clat (usec): min=729, max=1023.6k, avg=31249.66, stdev=39733.21 lat (usec): min=731, max=1023.6k, avg=31260.79, stdev=39748.27 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1237], 10.00th=[ 1565], | 20.00th=[ 3425], 30.00th=[ 6915], 40.00th=[ 14746], | 50.00th=[ 23462], 60.00th=[ 30540], 70.00th=[ 39060], | 80.00th=[ 52167], 90.00th=[ 74974], 95.00th=[ 92799], | 99.00th=[ 135267], 99.50th=[ 160433], 99.90th=[ 191890], | 99.95th=[1027605], 99.99th=[1027605] bw ( KiB/s): min= 7, max= 135, per=24.72%, avg=55.61, stdev=22.82, samples=218 iops : min= 1, max= 33, avg=13.25, stdev= 5.75, samples=218 lat (usec) : 50=0.29%, 100=1.86%, 250=0.07%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.36% lat (msec) : 2=6.32%, 4=4.75%, 10=7.06%, 20=12.17%, 50=41.41% lat (msec) : 100=21.97%, 250=3.61%, 2000=0.03% cpu : usr=0.09%, sys=5.10%, ctx=6485, 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=215KiB/s (220kB/s), 53.4KiB/s-54.8KiB/s (54.7kB/s-56.1kB/s), io=23.4MiB (24.6MB), run=109860-111638msec WRITE: bw=225KiB/s (231kB/s), 55.9KiB/s-57.3KiB/s (57.2kB/s-58.7kB/s), io=24.6MiB (25.7MB), run=109860-111638msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179354: Sat Sep 5 05:17:41 2026 read: IOPS=9, BW=39.6KiB/s (40.6kB/s)(5992KiB/151186msec) clat (msec): min=6, max=1106, avg=39.35, stdev=44.48 lat (msec): min=6, max=1106, avg=39.36, stdev=44.48 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 82], 95.00th=[ 113], | 99.00th=[ 184], 99.50th=[ 207], 99.90th=[ 284], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 167, per=25.51%, avg=40.05, stdev=26.10, samples=292 iops : min= 1, max= 41, avg= 9.34, stdev= 6.57, samples=292 write: IOPS=10, BW=41.6KiB/s (42.6kB/s)(6296KiB/151186msec); 0 zone resets clat (msec): min=10, max=404, avg=58.49, stdev=40.59 lat (msec): min=10, max=404, avg=58.49, stdev=40.59 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 46], 60.00th=[ 53], | 70.00th=[ 67], 80.00th=[ 84], 90.00th=[ 112], 95.00th=[ 140], | 99.00th=[ 205], 99.50th=[ 239], 99.90th=[ 300], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 7, max= 127, per=25.12%, avg=41.45, stdev=23.47, samples=296 iops : min= 1, max= 31, avg= 9.69, stdev= 5.92, samples=296 lat (msec) : 10=2.38%, 20=16.93%, 50=47.56%, 100=23.18%, 250=9.70% lat (msec) : 500=0.23%, 2000=0.03% cpu : usr=0.06%, sys=1.81%, ctx=4728, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179355: Sat Sep 5 05:17:41 2026 read: IOPS=9, BW=39.6KiB/s (40.6kB/s)(5940KiB/149909msec) clat (msec): min=5, max=1328, avg=38.93, stdev=48.45 lat (msec): min=5, max=1328, avg=38.93, stdev=48.45 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 54], 90.00th=[ 83], 95.00th=[ 112], | 99.00th=[ 176], 99.50th=[ 203], 99.90th=[ 326], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7, max= 135, per=25.69%, avg=40.33, stdev=26.64, samples=287 iops : min= 1, max= 33, avg= 9.41, stdev= 6.71, samples=287 write: IOPS=10, BW=42.3KiB/s (43.4kB/s)(6348KiB/149909msec); 0 zone resets clat (msec): min=10, max=402, avg=57.91, stdev=40.67 lat (msec): min=10, max=402, avg=57.91, stdev=40.67 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 66], 80.00th=[ 82], 90.00th=[ 114], 95.00th=[ 142], | 99.00th=[ 192], 99.50th=[ 230], 99.90th=[ 292], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 7, max= 119, per=25.42%, avg=41.94, stdev=23.61, samples=294 iops : min= 1, max= 29, avg= 9.81, stdev= 5.95, samples=294 lat (msec) : 10=2.54%, 20=17.06%, 50=46.88%, 100=23.27%, 250=9.99% lat (msec) : 500=0.23%, 2000=0.03% cpu : usr=0.05%, sys=1.76%, ctx=4695, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179356: Sat Sep 5 05:17:41 2026 read: IOPS=9, BW=39.6KiB/s (40.6kB/s)(6028KiB/152079msec) clat (msec): min=5, max=325, avg=41.05, stdev=37.67 lat (msec): min=5, max=325, avg=41.05, stdev=37.67 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 60], 90.00th=[ 89], 95.00th=[ 114], | 99.00th=[ 190], 99.50th=[ 220], 99.90th=[ 317], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 7, max= 151, per=25.45%, avg=39.96, stdev=24.77, samples=292 iops : min= 1, max= 37, avg= 9.32, stdev= 6.25, samples=292 write: IOPS=10, BW=41.2KiB/s (42.1kB/s)(6260KiB/152079msec); 0 zone resets clat (msec): min=9, max=1439, avg=57.55, stdev=52.05 lat (msec): min=9, max=1439, avg=57.55, stdev=52.05 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 53], | 70.00th=[ 64], 80.00th=[ 81], 90.00th=[ 111], 95.00th=[ 140], | 99.00th=[ 197], 99.50th=[ 218], 99.90th=[ 249], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7, max= 127, per=24.72%, avg=40.78, stdev=25.13, samples=297 iops : min= 1, max= 31, avg= 9.52, stdev= 6.33, samples=297 lat (msec) : 10=2.51%, 20=16.60%, 50=46.97%, 100=23.67%, 250=10.12% lat (msec) : 500=0.10%, 2000=0.03% cpu : usr=0.05%, sys=1.74%, ctx=4768, 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=179357: Sat Sep 5 05:17:41 2026 read: IOPS=9, BW=39.0KiB/s (40.9kB/s)(6052KiB/151344msec) clat (msec): min=5, max=312, avg=38.70, stdev=34.02 lat (msec): min=5, max=312, avg=38.70, stdev=34.02 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 55], 90.00th=[ 84], 95.00th=[ 108], | 99.00th=[ 153], 99.50th=[ 205], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 150, per=25.70%, avg=40.35, stdev=26.38, samples=292 iops : min= 1, max= 37, avg= 9.41, stdev= 6.65, samples=292 write: IOPS=10, BW=41.2KiB/s (42.2kB/s)(6236KiB/151344msec); 0 zone resets clat (msec): min=10, max=1429, avg=59.41, stdev=52.66 lat (msec): min=10, max=1429, avg=59.41, stdev=52.66 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 55], | 70.00th=[ 68], 80.00th=[ 85], 90.00th=[ 113], 95.00th=[ 136], | 99.00th=[ 197], 99.50th=[ 247], 99.90th=[ 351], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7, max= 143, per=24.85%, avg=41.01, stdev=23.97, samples=296 iops : min= 1, max= 35, avg= 9.58, stdev= 6.04, samples=296 lat (msec) : 10=2.34%, 20=16.47%, 50=46.97%, 100=23.93%, 250=9.99% lat (msec) : 500=0.26%, 2000=0.03% cpu : usr=0.06%, sys=1.84%, ctx=4756, 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=158KiB/s (162kB/s), 39.6KiB/s-39.0KiB/s (40.6kB/s-40.9kB/s), io=23.4MiB (24.6MB), run=149909-152079msec WRITE: bw=165KiB/s (169kB/s), 41.2KiB/s-42.3KiB/s (42.1kB/s-43.4kB/s), io=24.6MiB (25.7MB), run=149909-152079msec 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=179399: Sat Sep 5 05:18:26 2026 read: IOPS=11, BW=177KiB/s (181kB/s)(5920KiB/33531msec) clat (usec): min=44, max=186515, avg=47873.55, stdev=30529.48 lat (usec): min=44, max=186516, avg=47875.46, stdev=30529.17 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 71], 10.00th=[ 17171], 20.00th=[ 25822], | 30.00th=[ 32113], 40.00th=[ 38011], 50.00th=[ 43254], 60.00th=[ 50070], | 70.00th=[ 57410], 80.00th=[ 66847], 90.00th=[ 85459], 95.00th=[102237], | 99.00th=[162530], 99.50th=[181404], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 31, max= 441, per=24.65%, avg=176.03, stdev=73.42, samples=66 iops : min= 1, max= 27, avg=10.21, stdev= 4.69, samples=66 write: IOPS=11, BW=190KiB/s (194kB/s)(6368KiB/33531msec); 0 zone resets clat (usec): min=1339, max=292799, avg=39364.77, stdev=39930.22 lat (usec): min=1341, max=292802, avg=39373.86, stdev=39931.37 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1909], 10.00th=[ 3458], 20.00th=[ 5932], | 30.00th=[ 9503], 40.00th=[ 18482], 50.00th=[ 28705], 60.00th=[ 40109], | 70.00th=[ 50070], 80.00th=[ 62129], 90.00th=[ 95945], 95.00th=[120062], | 99.00th=[179307], 99.50th=[217056], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 63, max= 405, per=25.23%, avg=189.48, stdev=74.30, samples=66 iops : min= 3, max= 25, avg=11.08, stdev= 4.73, samples=66 lat (usec) : 50=0.26%, 100=2.99%, 250=0.52%, 500=0.13% lat (msec) : 2=2.86%, 4=3.78%, 10=9.77%, 20=6.90%, 50=37.63% lat (msec) : 100=27.99%, 250=7.03%, 500=0.13% cpu : usr=0.07%, sys=4.83%, ctx=1676, 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=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=179400: Sat Sep 5 05:18:26 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(5744KiB/33485msec) clat (usec): min=40, max=225270, avg=49139.98, stdev=32835.77 lat (usec): min=41, max=225272, avg=49141.72, stdev=32835.85 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 69], 10.00th=[ 16057], 20.00th=[ 23987], | 30.00th=[ 29492], 40.00th=[ 35390], 50.00th=[ 43779], 60.00th=[ 52167], | 70.00th=[ 63177], 80.00th=[ 74974], 90.00th=[ 88605], 95.00th=[107480], | 99.00th=[166724], 99.50th=[181404], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 29, max= 352, per=24.01%, avg=171.44, stdev=70.73, samples=66 iops : min= 1, max= 22, avg= 9.92, stdev= 4.50, samples=66 write: IOPS=12, BW=195KiB/s (200kB/s)(6544KiB/33485msec); 0 zone resets clat (usec): min=1208, max=193641, avg=37742.47, stdev=37464.96 lat (usec): min=1210, max=193645, avg=37748.11, stdev=37463.95 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1860], 10.00th=[ 2704], 20.00th=[ 6063], | 30.00th=[ 10683], 40.00th=[ 16450], 50.00th=[ 26084], 60.00th=[ 34341], | 70.00th=[ 49546], 80.00th=[ 67634], 90.00th=[ 90702], 95.00th=[112722], | 99.00th=[149947], 99.50th=[170918], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 31, max= 536, per=25.96%, avg=194.92, stdev=94.49, samples=66 iops : min= 1, max= 33, avg=11.41, stdev= 5.98, samples=66 lat (usec) : 50=0.13%, 100=2.86%, 250=0.65%, 500=0.13%, 1000=0.13% lat (msec) : 2=3.65%, 4=3.91%, 10=7.94%, 20=10.68%, 50=34.64% lat (msec) : 100=28.26%, 250=7.03% cpu : usr=0.07%, sys=4.74%, ctx=1624, 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=179401: Sat Sep 5 05:18:26 2026 read: IOPS=11, BW=191KiB/s (195kB/s)(6256KiB/32820msec) clat (usec): min=49, max=251598, avg=47966.42, stdev=31239.66 lat (usec): min=50, max=251600, avg=47968.05, stdev=31239.68 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 71], 10.00th=[ 13566], 20.00th=[ 24511], | 30.00th=[ 30540], 40.00th=[ 37487], 50.00th=[ 43779], 60.00th=[ 51119], | 70.00th=[ 58983], 80.00th=[ 71828], 90.00th=[ 86508], 95.00th=[101188], | 99.00th=[132645], 99.50th=[206570], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 58, max= 379, per=26.71%, avg=190.70, stdev=69.21, samples=64 iops : min= 3, max= 23, avg=11.14, stdev= 4.37, samples=64 write: IOPS=11, BW=184KiB/s (188kB/s)(6032KiB/32820msec); 0 zone resets clat (usec): min=1492, max=218982, avg=36631.97, stdev=36244.20 lat (usec): min=1493, max=218984, avg=36634.59, stdev=36244.17 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 1942], 10.00th=[ 2999], 20.00th=[ 6128], | 30.00th=[ 10028], 40.00th=[ 17433], 50.00th=[ 26084], 60.00th=[ 36439], | 70.00th=[ 46924], 80.00th=[ 61080], 90.00th=[ 87557], 95.00th=[115868], | 99.00th=[156238], 99.50th=[181404], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 411, per=24.05%, avg=180.63, stdev=84.98, samples=64 iops : min= 1, max= 25, avg=10.52, stdev= 5.39, samples=64 lat (usec) : 50=0.13%, 100=4.17%, 250=0.13% lat (msec) : 2=2.73%, 4=4.04%, 10=8.07%, 20=8.85%, 50=37.50% lat (msec) : 100=28.39%, 250=5.86%, 500=0.13% cpu : usr=0.05%, sys=4.68%, ctx=1633, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179402: Sat Sep 5 05:18:26 2026 read: IOPS=11, BW=184KiB/s (188kB/s)(6032KiB/32835msec) clat (usec): min=35, max=231647, avg=43143.06, stdev=31540.42 lat (usec): min=36, max=231649, avg=43148.20, stdev=31539.83 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 64], 10.00th=[ 90], 20.00th=[ 21890], | 30.00th=[ 27919], 40.00th=[ 32637], 50.00th=[ 38536], 60.00th=[ 44303], | 70.00th=[ 52691], 80.00th=[ 63177], 90.00th=[ 78119], 95.00th=[ 99091], | 99.00th=[164627], 99.50th=[183501], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 61, max= 349, per=25.87%, avg=184.73, stdev=74.13, samples=63 iops : min= 3, max= 21, avg=10.76, stdev= 4.70, samples=63 write: IOPS=11, BW=191KiB/s (195kB/s)(6256KiB/32835msec); 0 zone resets clat (usec): min=1402, max=208468, avg=41262.03, stdev=41721.30 lat (usec): min=1404, max=208470, avg=41273.10, stdev=41714.91 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1844], 10.00th=[ 2769], 20.00th=[ 5735], | 30.00th=[ 10552], 40.00th=[ 20317], 50.00th=[ 28705], 60.00th=[ 37487], | 70.00th=[ 48497], 80.00th=[ 69731], 90.00th=[103285], 95.00th=[122160], | 99.00th=[183501], 99.50th=[198181], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 406, per=25.25%, avg=189.63, stdev=74.77, samples=64 iops : min= 1, max= 25, avg=11.08, stdev= 4.78, samples=64 lat (usec) : 50=0.26%, 100=4.95%, 250=0.52%, 500=0.26%, 1000=0.13% lat (msec) : 2=3.52%, 4=4.43%, 10=7.29%, 20=7.68%, 50=39.71% lat (msec) : 100=23.44%, 250=7.81% cpu : usr=0.06%, sys=4.50%, ctx=1609, 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=714KiB/s (731kB/s), 172KiB/s-191KiB/s (176kB/s-195kB/s), io=23.4MiB (24.5MB), run=32820-33531msec WRITE: bw=752KiB/s (770kB/s), 184KiB/s-195KiB/s (188kB/s-200kB/s), io=24.6MiB (25.8MB), run=32820-33531msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179394: Sat Sep 5 05:18:39 2026 read: IOPS=7, BW=127KiB/s (130kB/s)(5920KiB/46624msec) clat (msec): min=7, max=360, avg=51.93, stdev=46.60 lat (msec): min=7, max=360, avg=51.93, stdev=46.60 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 53], 80.00th=[ 69], 90.00th=[ 121], 95.00th=[ 148], | 99.00th=[ 228], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 416, per=25.04%, avg=127.20, stdev=72.06, samples=90 iops : min= 1, max= 26, avg= 7.13, stdev= 4.61, samples=90 write: IOPS=8, BW=137KiB/s (140kB/s)(6368KiB/46624msec); 0 zone resets clat (msec): min=18, max=263, avg=68.01, stdev=41.13 lat (msec): min=18, max=263, avg=68.02, stdev=41.13 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 58], 60.00th=[ 66], | 70.00th=[ 78], 80.00th=[ 100], 90.00th=[ 129], 95.00th=[ 148], | 99.00th=[ 224], 99.50th=[ 251], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 30, max= 447, per=26.12%, avg=139.76, stdev=76.05, samples=89 iops : min= 1, max= 27, avg= 7.92, stdev= 4.81, samples=89 lat (msec) : 10=0.78%, 20=6.90%, 50=47.40%, 100=28.65%, 250=15.76% lat (msec) : 500=0.52% cpu : usr=0.07%, sys=1.61%, ctx=1233, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179396: Sat Sep 5 05:18:39 2026 read: IOPS=7, BW=122KiB/s (125kB/s)(5744KiB/47085msec) clat (msec): min=7, max=363, avg=52.38, stdev=46.56 lat (msec): min=7, max=363, avg=52.38, stdev=46.56 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 54], 80.00th=[ 74], 90.00th=[ 123], 95.00th=[ 161], | 99.00th=[ 209], 99.50th=[ 215], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 21, max= 410, per=24.30%, avg=123.43, stdev=79.97, samples=90 iops : min= 1, max= 25, avg= 6.90, stdev= 5.06, samples=90 write: IOPS=8, BW=139KiB/s (142kB/s)(6544KiB/47085msec); 0 zone resets clat (msec): min=12, max=361, avg=68.61, stdev=45.23 lat (msec): min=12, max=361, avg=68.62, stdev=45.23 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 49], 50.00th=[ 57], 60.00th=[ 68], | 70.00th=[ 80], 80.00th=[ 100], 90.00th=[ 130], 95.00th=[ 159], | 99.00th=[ 222], 99.50th=[ 257], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 31, max= 383, per=25.56%, avg=136.73, stdev=74.06, samples=92 iops : min= 1, max= 23, avg= 7.73, stdev= 4.67, samples=92 lat (msec) : 10=0.78%, 20=9.90%, 50=43.10%, 100=29.17%, 250=16.54% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.65%, ctx=1154, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179397: Sat Sep 5 05:18:39 2026 read: IOPS=8, BW=134KiB/s (138kB/s)(6256KiB/46551msec) clat (msec): min=8, max=359, avg=49.45, stdev=43.10 lat (msec): min=8, max=359, avg=49.45, stdev=43.10 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 44], | 70.00th=[ 54], 80.00th=[ 68], 90.00th=[ 102], 95.00th=[ 140], | 99.00th=[ 222], 99.50th=[ 255], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 352, per=26.58%, avg=135.03, stdev=84.59, samples=91 iops : min= 1, max= 22, avg= 7.63, stdev= 5.36, samples=91 write: IOPS=8, BW=130KiB/s (133kB/s)(6032KiB/46551msec); 0 zone resets clat (msec): min=14, max=353, avg=71.97, stdev=42.19 lat (msec): min=14, max=353, avg=71.99, stdev=42.18 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 28], 10.00th=[ 33], 20.00th=[ 39], | 30.00th=[ 46], 40.00th=[ 51], 50.00th=[ 59], 60.00th=[ 70], | 70.00th=[ 86], 80.00th=[ 102], 90.00th=[ 131], 95.00th=[ 157], | 99.00th=[ 199], 99.50th=[ 211], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 31, max= 352, per=24.00%, avg=128.41, stdev=65.16, samples=91 iops : min= 1, max= 22, avg= 7.21, stdev= 4.14, samples=91 lat (msec) : 10=0.65%, 20=9.38%, 50=42.84%, 100=31.77%, 250=14.97% lat (msec) : 500=0.39% cpu : usr=0.07%, sys=1.66%, ctx=1173, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179398: Sat Sep 5 05:18:39 2026 read: IOPS=8, BW=129KiB/s (132kB/s)(6032KiB/46865msec) clat (msec): min=7, max=260, avg=51.27, stdev=42.62 lat (msec): min=7, max=260, avg=51.28, stdev=42.63 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 56], 80.00th=[ 75], 90.00th=[ 120], 95.00th=[ 150], | 99.00th=[ 201], 99.50th=[ 205], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 30, max= 480, per=25.27%, avg=128.37, stdev=79.40, samples=91 iops : min= 1, max= 30, avg= 7.21, stdev= 5.03, samples=91 write: IOPS=8, BW=133KiB/s (137kB/s)(6256KiB/46865msec); 0 zone resets clat (msec): min=16, max=351, avg=70.01, stdev=44.85 lat (msec): min=16, max=351, avg=70.01, stdev=44.85 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 30], 20.00th=[ 37], | 30.00th=[ 44], 40.00th=[ 51], 50.00th=[ 58], 60.00th=[ 66], | 70.00th=[ 78], 80.00th=[ 94], 90.00th=[ 132], 95.00th=[ 157], | 99.00th=[ 247], 99.50th=[ 284], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 31, max= 383, per=24.83%, avg=132.82, stdev=70.65, samples=92 iops : min= 1, max= 23, avg= 7.49, stdev= 4.49, samples=92 lat (msec) : 10=0.91%, 20=9.64%, 50=41.93%, 100=31.51%, 250=15.63% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=1.58%, ctx=1186, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=509KiB/s (521kB/s), 122KiB/s-134KiB/s (125kB/s-138kB/s), io=23.4MiB (24.5MB), run=46551-47085msec WRITE: bw=535KiB/s (548kB/s), 130KiB/s-139KiB/s (133kB/s-142kB/s), io=24.6MiB (25.8MB), run=46551-47085msec 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=179416: Sat Sep 5 05:18:57 2026 read: IOPS=2, BW=2369KiB/s (2426kB/s)(7168KiB/3026msec) clat (msec): min=131, max=374, avg=216.05, stdev=77.81 lat (msec): min=131, max=374, avg=216.05, stdev=77.81 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 167], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 199], 60.00th=[ 209], | 70.00th=[ 209], 80.00th=[ 245], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 1572, max= 4096, per=67.84%, avg=2935.50, stdev=1337.26, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1692KiB/s (1733kB/s)(5120KiB/3026msec); 0 zone resets clat (msec): min=175, max=292, avg=224.00, stdev=42.82 lat (msec): min=175, max=292, avg=224.09, stdev=42.82 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 226], 80.00th=[ 226], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 2035, max= 4096, per=55.79%, avg=3379.33, stdev=1165.08, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 lat (msec) : 250=83.33%, 500=16.67% cpu : usr=0.00%, sys=13.72%, ctx=261, 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=179417: Sat Sep 5 05:18:57 2026 read: IOPS=0, BW=433KiB/s (443kB/s)(2048KiB/4733msec) clat (msec): min=283, max=443, avg=363.32, stdev=112.87 lat (msec): min=283, max=443, avg=363.32, stdev=112.87 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 443], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 1597, max= 2007, per=41.65%, avg=1802.00, stdev=289.91, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2164KiB/s (2215kB/s)(10.0MiB/4733msec); 0 zone resets clat (msec): min=175, max=760, avg=376.82, stdev=187.88 lat (msec): min=175, max=760, avg=377.19, stdev=187.81 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 190], | 30.00th=[ 236], 40.00th=[ 284], 50.00th=[ 313], 60.00th=[ 321], | 70.00th=[ 405], 80.00th=[ 514], 90.00th=[ 575], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 1976, max= 4096, per=50.18%, avg=3039.33, stdev=1136.51, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.33, samples=6 lat (msec) : 250=25.00%, 500=50.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=11.35%, ctx=136, 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=179418: Sat Sep 5 05:18:57 2026 read: IOPS=1, BW=1743KiB/s (1785kB/s)(6144KiB/3525msec) clat (usec): min=631, max=250225, avg=139234.27, stdev=111545.45 lat (usec): min=632, max=250227, avg=139235.75, stdev=111545.32 clat percentiles (usec): | 1.00th=[ 635], 5.00th=[ 635], 10.00th=[ 635], 20.00th=[ 1745], | 30.00th=[ 1745], 40.00th=[166724], 50.00th=[166724], 60.00th=[179307], | 70.00th=[235930], 80.00th=[235930], 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= 2007, max= 4007, per=58.34%, avg=2524.25, stdev=988.65, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1743KiB/s (1785kB/s)(6144KiB/3525msec); 0 zone resets clat (msec): min=148, max=784, avg=436.81, stdev=224.79 lat (msec): min=148, max=784, avg=437.85, stdev=224.05 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 506], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 2003, max= 3175, per=38.06%, avg=2305.00, stdev=580.17, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=9.31%, ctx=113, 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=179420: Sat Sep 5 05:18:57 2026 read: IOPS=1, BW=1635KiB/s (1675kB/s)(5120KiB/3131msec) clat (usec): min=743, max=103231, avg=42470.98, stdev=54663.59 lat (usec): min=744, max=103232, avg=42472.24, stdev=54663.39 clat percentiles (usec): | 1.00th=[ 742], 5.00th=[ 742], 10.00th=[ 742], 20.00th=[ 742], | 30.00th=[ 3261], 40.00th=[ 3261], 50.00th=[ 3687], 60.00th=[ 3687], | 70.00th=[101188], 80.00th=[101188], 90.00th=[103285], 95.00th=[103285], | 99.00th=[103285], 99.50th=[103285], 99.90th=[103285], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2289KiB/s (2344kB/s)(7168KiB/3131msec); 0 zone resets clat (msec): min=100, max=843, avg=355.76, stdev=255.38 lat (msec): min=100, max=843, avg=355.88, stdev=255.38 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 211], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 262], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 550], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 2007, max= 4071, per=50.08%, avg=3033.25, stdev=1161.75, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 4=16.67%, 250=41.67%, 500=16.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=11.05%, ctx=87, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4327KiB/s (4431kB/s), 433KiB/s-2369KiB/s (443kB/s-2426kB/s), io=20.0MiB (20.0MB), run=3026-4733msec WRITE: bw=6058KiB/s (6203kB/s), 1692KiB/s-2289KiB/s (1733kB/s-2344kB/s), io=28.0MiB (29.4MB), run=3026-4733msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179419: Sat Sep 5 05:18:57 2026 read: IOPS=1, BW=1578KiB/s (1616kB/s)(7168KiB/4543msec) clat (msec): min=92, max=1201, avg=357.51, stdev=400.18 lat (msec): min=92, max=1201, avg=357.51, stdev=400.18 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 133], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 165], 60.00th=[ 247], | 70.00th=[ 247], 80.00th=[ 531], 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= 2035, max= 4031, per=72.56%, avg=3035.00, stdev=1150.09, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1127KiB/s (1154kB/s)(5120KiB/4543msec); 0 zone resets clat (msec): min=131, max=404, avg=307.85, stdev=114.24 lat (msec): min=131, max=404, avg=308.00, stdev=114.26 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 132], | 30.00th=[ 257], 40.00th=[ 257], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 1796, max= 4071, per=44.97%, avg=2634.00, stdev=1250.20, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.91%, ctx=122, 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=179421: Sat Sep 5 05:18:57 2026 read: IOPS=0, BW=418KiB/s (428kB/s)(2048KiB/4895msec) clat (msec): min=93, max=415, avg=254.64, stdev=228.18 lat (msec): min=93, max=415, avg=254.64, stdev=228.18 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 93], 40.00th=[ 93], 50.00th=[ 93], 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= 2027, max= 2039, per=48.60%, avg=2033.00, stdev= 8.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2092KiB/s (2142kB/s)(10.0MiB/4895msec); 0 zone resets clat (msec): min=260, max=1199, avg=402.52, stdev=287.55 lat (msec): min=260, max=1199, avg=403.14, stdev=287.34 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 275], 50.00th=[ 292], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 401], 90.00th=[ 460], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 1780, max= 4087, per=45.49%, avg=2664.50, stdev=1084.65, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 100=8.33%, 500=83.33%, 2000=8.33% cpu : usr=0.04%, sys=5.48%, ctx=135, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179422: Sat Sep 5 05:18:57 2026 read: IOPS=1, BW=1466KiB/s (1501kB/s)(6144KiB/4192msec) clat (msec): min=77, max=397, avg=212.48, stdev=140.07 lat (msec): min=77, max=397, avg=212.48, stdev=140.07 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 100], | 30.00th=[ 100], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 207], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 2015, max= 3592, per=60.90%, avg=2547.33, stdev=904.76, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1466KiB/s (1501kB/s)(6144KiB/4192msec); 0 zone resets clat (msec): min=122, max=1169, avg=456.77, stdev=386.68 lat (msec): min=122, max=1169, avg=456.96, stdev=386.64 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 359], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 2015, max= 4087, per=46.20%, avg=2705.67, stdev=1196.27, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.05%, sys=2.70%, ctx=61, 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=179423: Sat Sep 5 05:18:57 2026 read: IOPS=1, BW=1078KiB/s (1104kB/s)(5120KiB/4748msec) clat (msec): min=77, max=525, avg=201.16, stdev=190.14 lat (msec): min=77, max=525, avg=201.16, stdev=190.14 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 78], | 30.00th=[ 89], 40.00th=[ 89], 50.00th=[ 95], 60.00th=[ 95], | 70.00th=[ 220], 80.00th=[ 220], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 2015, max= 4071, per=64.71%, avg=2707.00, stdev=1181.30, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1510KiB/s (1546kB/s)(7168KiB/4748msec); 0 zone resets clat (msec): min=133, max=1315, avg=466.66, stdev=399.46 lat (msec): min=133, max=1315, avg=466.77, stdev=399.47 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 215], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 330], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 558], 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= 1796, max= 2043, per=33.82%, avg=1980.80, stdev=104.04, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=25.00%, 250=25.00%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=3.27%, ctx=132, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4184KiB/s (4284kB/s), 418KiB/s-1578KiB/s (428kB/s-1616kB/s), io=20.0MiB (20.0MB), run=4192-4895msec WRITE: bw=5857KiB/s (5998kB/s), 1127KiB/s-2092KiB/s (1154kB/s-2142kB/s), io=28.0MiB (29.4MB), run=4192-4895msec 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=179435: Sat Sep 5 05:19:14 2026 read: IOPS=1, BW=4708KiB/s (4821kB/s)(12.0MiB/2610msec) clat (msec): min=676, max=1076, avg=859.16, stdev=202.01 lat (msec): min=676, max=1076, avg=859.16, stdev=202.00 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 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= 7876, max= 8062, per=100.00%, avg=7969.00, stdev=131.52, 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=12.69%, ctx=367, majf=0, minf=7 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=179436: Sat Sep 5 05:19:14 2026 read: IOPS=0, BW=1407KiB/s (1441kB/s)(4096KiB/2911msec) clat (nsec): min=582624k, max=582624k, avg=582624035.00, stdev= 0.00 lat (nsec): min=582626k, max=582626k, avg=582626473.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 5680, max= 5680, per=100.00%, avg=5680.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2814KiB/s (2882kB/s)(8192KiB/2911msec); 0 zone resets clat (msec): min=768, max=1501, avg=1135.14, stdev=517.91 lat (msec): min=769, max=1501, avg=1135.65, stdev=518.00 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 1502], | 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= 8175, max= 8175, per=84.73%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.91%, ctx=191, 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=179437: Sat Sep 5 05:19:14 2026 write: IOPS=0, BW=3618KiB/s (3705kB/s)(12.0MiB/3396msec); 0 zone resets clat (msec): min=234, max=1572, avg=1111.90, stdev=760.06 lat (msec): min=235, max=1573, avg=1112.50, stdev=760.04 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 234], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 1536], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8175, max= 8175, per=84.73%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.65%, ctx=48, majf=0, minf=7 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=179438: Sat Sep 5 05:19:14 2026 write: IOPS=1, BW=4118KiB/s (4217kB/s)(12.0MiB/2984msec); 0 zone resets clat (msec): min=436, max=1465, avg=960.71, stdev=514.53 lat (msec): min=437, max=1466, avg=961.72, stdev=514.61 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 7846, max= 8159, per=82.94%, avg=8002.50, stdev=221.32, 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=3.89%, ctx=64, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=5628KiB/s (5763kB/s), 1407KiB/s-4708KiB/s (1441kB/s-4821kB/s), io=16.0MiB (16.8MB), run=2610-2911msec WRITE: bw=9649KiB/s (9881kB/s), 2814KiB/s-4118KiB/s (2882kB/s-4217kB/s), io=32.0MiB (33.6MB), run=2911-3396msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179431: Sat Sep 5 05:19:14 2026 read: IOPS=0, BW=3275KiB/s (3354kB/s)(12.0MiB/3752msec) clat (msec): min=167, max=1765, avg=1225.71, stdev=916.78 lat (msec): min=167, max=1765, avg=1225.71, stdev=916.78 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 1737], 50.00th=[ 1737], 60.00th=[ 1737], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8110, max= 8175, per=100.00%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.32%, ctx=41, 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=179432: Sat Sep 5 05:19:14 2026 read: IOPS=0, BW=1205KiB/s (1234kB/s)(4096KiB/3399msec) clat (nsec): min=1336.0M, max=1336.0M, avg=1336002300.00, stdev= 0.00 lat (nsec): min=1336.0M, max=1336.0M, avg=1336005376.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1334], 5.00th=[ 1334], 10.00th=[ 1334], 20.00th=[ 1334], | 30.00th=[ 1334], 40.00th=[ 1334], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2410KiB/s (2468kB/s)(8192KiB/3399msec); 0 zone resets clat (msec): min=419, max=1604, avg=1012.38, stdev=837.97 lat (msec): min=424, max=1605, avg=1014.89, stdev=835.41 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=[ 1603], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 8110, max= 8110, per=84.13%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.00%, ctx=45, 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=179433: Sat Sep 5 05:19:14 2026 write: IOPS=1, BW=4106KiB/s (4204kB/s)(12.0MiB/2993msec); 0 zone resets clat (msec): min=860, max=997, avg=939.94, stdev=70.79 lat (msec): min=866, max=997, avg=942.10, stdev=68.12 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7937, max= 8110, per=83.23%, avg=8023.50, stdev=122.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=6.95%, ctx=102, 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=179434: Sat Sep 5 05:19:14 2026 write: IOPS=1, BW=4304KiB/s (4407kB/s)(12.0MiB/2855msec); 0 zone resets clat (msec): min=554, max=1704, avg=940.00, stdev=661.71 lat (msec): min=555, max=1704, avg=941.87, stdev=660.50 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=[ 558], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7937, max= 8078, per=83.07%, avg=8007.50, stdev=99.70, 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=4.13%, 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=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=4367KiB/s (4472kB/s), 1205KiB/s-3275KiB/s (1234kB/s-3354kB/s), io=16.0MiB (16.8MB), run=3399-3752msec WRITE: bw=9640KiB/s (9872kB/s), 2410KiB/s-4304KiB/s (2468kB/s-4407kB/s), io=32.0MiB (33.6MB), run=2855-3399msec