== sanity test 398b: DIO and buffer IO race ============== 02:39:35 (1787121575) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.20689 s, 8.1 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=179293: Wed Aug 19 02:41:52 2026 read: IOPS=12, BW=50.9KiB/s (52.1kB/s)(5992KiB/117797msec) clat (usec): min=33, max=215688, avg=42345.11, stdev=27665.89 lat (usec): min=34, max=215689, avg=42347.64, stdev=27668.65 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 9372], 10.00th=[ 16057], 20.00th=[ 21627], | 30.00th=[ 26608], 40.00th=[ 30802], 50.00th=[ 36963], 60.00th=[ 43254], | 70.00th=[ 51119], 80.00th=[ 59507], 90.00th=[ 74974], 95.00th=[ 93848], | 99.00th=[147850], 99.50th=[160433], 99.90th=[191890], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 7, max= 120, per=24.89%, avg=50.52, stdev=17.48, samples=231 iops : min= 1, max= 30, avg=12.01, stdev= 4.43, samples=231 write: IOPS=13, BW=53.4KiB/s (54.7kB/s)(6296KiB/117797msec); 0 zone resets clat (usec): min=782, max=834274, avg=34285.68, stdev=38429.37 lat (usec): min=784, max=834276, avg=34290.48, stdev=38428.54 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1385], 10.00th=[ 1876], 20.00th=[ 4490], | 30.00th=[ 9372], 40.00th=[ 17695], 50.00th=[ 25035], 60.00th=[ 33162], | 70.00th=[ 43779], 80.00th=[ 57934], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[141558], 99.50th=[160433], 99.90th=[221250], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 7, max= 152, per=25.06%, avg=53.37, stdev=23.07, samples=230 iops : min= 1, max= 38, avg=12.71, stdev= 5.83, samples=230 lat (usec) : 50=0.20%, 100=1.86%, 250=0.07%, 1000=0.16% lat (msec) : 2=5.27%, 4=4.07%, 10=6.90%, 20=11.33%, 50=42.19% lat (msec) : 100=23.73%, 250=4.20%, 1000=0.03% cpu : usr=0.08%, sys=5.57%, ctx=6649, 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=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=179294: Wed Aug 19 02:41:52 2026 read: IOPS=12, BW=51.6KiB/s (52.8kB/s)(5940KiB/115189msec) clat (usec): min=40, max=891539, avg=43559.86, stdev=35362.81 lat (usec): min=40, max=891540, avg=43568.97, stdev=35362.54 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11469], 10.00th=[ 16319], 20.00th=[ 22676], | 30.00th=[ 27395], 40.00th=[ 32637], 50.00th=[ 38011], 60.00th=[ 43779], | 70.00th=[ 51119], 80.00th=[ 60556], 90.00th=[ 72877], 95.00th=[ 93848], | 99.00th=[139461], 99.50th=[158335], 99.90th=[375391], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 7, max= 118, per=25.24%, avg=51.24, stdev=18.15, samples=226 iops : min= 1, max= 29, avg=12.18, stdev= 4.59, samples=226 write: IOPS=13, BW=55.1KiB/s (56.4kB/s)(6348KiB/115189msec); 0 zone resets clat (usec): min=959, max=289379, avg=31564.92, stdev=31966.12 lat (usec): min=961, max=289381, avg=31567.99, stdev=31966.39 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1369], 10.00th=[ 1647], 20.00th=[ 3916], | 30.00th=[ 7635], 40.00th=[ 15533], 50.00th=[ 22414], 60.00th=[ 31065], | 70.00th=[ 40633], 80.00th=[ 54264], 90.00th=[ 74974], 95.00th=[ 96994], | 99.00th=[132645], 99.50th=[143655], 99.90th=[210764], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 7, max= 135, per=25.73%, avg=54.81, stdev=23.17, samples=226 iops : min= 1, max= 33, avg=13.07, stdev= 5.84, samples=226 lat (usec) : 50=0.29%, 100=1.20%, 250=0.16%, 500=0.07%, 1000=0.03% lat (msec) : 2=6.18%, 4=4.46%, 10=7.85%, 20=10.38%, 50=42.45% lat (msec) : 100=22.72%, 250=4.10%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=5.93%, ctx=6679, 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=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=179295: Wed Aug 19 02:41:52 2026 read: IOPS=12, BW=51.8KiB/s (53.0kB/s)(6028KiB/116393msec) clat (usec): min=40, max=832154, avg=42839.90, stdev=33113.76 lat (usec): min=41, max=832156, avg=42841.17, stdev=33113.78 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 8979], 10.00th=[ 15139], 20.00th=[ 22152], | 30.00th=[ 26870], 40.00th=[ 31851], 50.00th=[ 37487], 60.00th=[ 44303], | 70.00th=[ 51643], 80.00th=[ 60556], 90.00th=[ 74974], 95.00th=[ 89654], | 99.00th=[127402], 99.50th=[149947], 99.90th=[227541], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 7, max= 109, per=25.29%, avg=51.33, stdev=17.33, samples=228 iops : min= 1, max= 27, avg=12.21, stdev= 4.40, samples=228 write: IOPS=13, BW=53.8KiB/s (55.1kB/s)(6260KiB/116393msec); 0 zone resets clat (usec): min=882, max=222232, avg=32873.20, stdev=33352.03 lat (usec): min=883, max=222234, avg=32874.74, stdev=33352.05 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1369], 10.00th=[ 1729], 20.00th=[ 4015], | 30.00th=[ 7635], 40.00th=[ 16188], 50.00th=[ 24511], 60.00th=[ 31327], | 70.00th=[ 42206], 80.00th=[ 56886], 90.00th=[ 78119], 95.00th=[102237], | 99.00th=[141558], 99.50th=[168821], 99.90th=[204473], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 7, max= 119, per=25.03%, avg=53.31, stdev=23.30, samples=228 iops : min= 1, max= 29, avg=12.70, stdev= 5.88, samples=228 lat (usec) : 50=0.33%, 100=1.60%, 250=0.20%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.89%, 4=4.26%, 10=7.00%, 20=11.62%, 50=40.92% lat (msec) : 100=23.83%, 250=4.17%, 1000=0.03% cpu : usr=0.08%, sys=5.57%, ctx=6478, 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=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=179296: Wed Aug 19 02:41:52 2026 read: IOPS=12, BW=51.9KiB/s (53.2kB/s)(6052KiB/116565msec) clat (usec): min=34, max=225154, avg=43271.37, stdev=26618.04 lat (usec): min=34, max=225155, avg=43273.83, stdev=26618.10 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11994], 10.00th=[ 17433], 20.00th=[ 22676], | 30.00th=[ 27395], 40.00th=[ 32375], 50.00th=[ 37487], 60.00th=[ 43779], | 70.00th=[ 52167], 80.00th=[ 61604], 90.00th=[ 78119], 95.00th=[ 91751], | 99.00th=[126354], 99.50th=[143655], 99.90th=[217056], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 15, max= 104, per=25.30%, avg=51.36, stdev=17.31, samples=228 iops : min= 3, max= 26, avg=12.22, stdev= 4.39, samples=228 write: IOPS=13, BW=53.5KiB/s (54.8kB/s)(6236KiB/116565msec); 0 zone resets clat (usec): min=791, max=861023, avg=32512.19, stdev=38226.58 lat (usec): min=793, max=861024, avg=32521.79, stdev=38231.07 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1369], 10.00th=[ 1762], 20.00th=[ 4047], | 30.00th=[ 7111], 40.00th=[ 15008], 50.00th=[ 22414], 60.00th=[ 30540], | 70.00th=[ 42206], 80.00th=[ 57934], 90.00th=[ 77071], 95.00th=[ 96994], | 99.00th=[128451], 99.50th=[156238], 99.90th=[258999], 99.95th=[859833], | 99.99th=[859833] bw ( KiB/s): min= 7, max= 119, per=24.91%, avg=53.06, stdev=22.04, samples=228 iops : min= 1, max= 29, avg=12.64, stdev= 5.55, samples=228 lat (usec) : 50=0.23%, 100=1.33%, 250=0.03%, 500=0.03%, 1000=0.13% lat (msec) : 2=5.76%, 4=4.30%, 10=7.68%, 20=10.71%, 50=41.50% lat (msec) : 100=24.54%, 250=3.68%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.75%, ctx=6712, majf=0, minf=19 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=204KiB/s (209kB/s), 50.9KiB/s-51.9KiB/s (52.1kB/s-53.2kB/s), io=23.4MiB (24.6MB), run=115189-117797msec WRITE: bw=213KiB/s (219kB/s), 53.4KiB/s-55.1KiB/s (54.7kB/s-56.4kB/s), io=24.6MiB (25.7MB), run=115189-117797msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179298: Wed Aug 19 02:42:32 2026 read: IOPS=9, BW=38.0KiB/s (38.0kB/s)(5992KiB/157512msec) clat (msec): min=4, max=943, avg=42.04, stdev=42.53 lat (msec): min=4, max=943, avg=42.04, stdev=42.53 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 94], 95.00th=[ 120], | 99.00th=[ 174], 99.50th=[ 188], 99.90th=[ 288], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 7, max= 136, per=25.49%, avg=38.50, stdev=25.27, samples=303 iops : min= 1, max= 34, avg= 8.98, stdev= 6.39, samples=303 write: IOPS=9, BW=39.0KiB/s (40.9kB/s)(6296KiB/157512msec); 0 zone resets clat (msec): min=8, max=282, avg=59.98, stdev=39.44 lat (msec): min=8, max=282, avg=59.98, stdev=39.44 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 49], 60.00th=[ 58], | 70.00th=[ 69], 80.00th=[ 87], 90.00th=[ 114], 95.00th=[ 136], | 99.00th=[ 203], 99.50th=[ 228], 99.90th=[ 279], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 7, max= 127, per=25.00%, avg=39.75, stdev=22.96, samples=308 iops : min= 1, max= 31, avg= 9.30, stdev= 5.77, samples=308 lat (msec) : 10=2.05%, 20=15.01%, 50=45.67%, 100=25.81%, 250=11.23% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.06%, sys=2.20%, ctx=5020, 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=179299: Wed Aug 19 02:42:32 2026 read: IOPS=9, BW=37.6KiB/s (38.5kB/s)(5940KiB/158008msec) clat (msec): min=4, max=914, avg=41.68, stdev=42.46 lat (msec): min=4, max=914, avg=41.68, stdev=42.46 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=[ 35], | 70.00th=[ 45], 80.00th=[ 62], 90.00th=[ 93], 95.00th=[ 122], | 99.00th=[ 171], 99.50th=[ 192], 99.90th=[ 251], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 127, per=25.27%, avg=38.16, stdev=25.27, samples=302 iops : min= 1, max= 31, avg= 8.90, stdev= 6.36, samples=302 write: IOPS=10, BW=40.2KiB/s (41.1kB/s)(6348KiB/158008msec); 0 zone resets clat (msec): min=10, max=328, avg=60.47, stdev=40.11 lat (msec): min=10, max=328, avg=60.47, stdev=40.11 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 58], | 70.00th=[ 70], 80.00th=[ 90], 90.00th=[ 117], 95.00th=[ 140], | 99.00th=[ 199], 99.50th=[ 224], 99.90th=[ 296], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 126, per=25.14%, avg=39.97, stdev=23.56, samples=308 iops : min= 1, max= 31, avg= 9.35, stdev= 5.94, samples=308 lat (msec) : 10=2.05%, 20=16.05%, 50=45.80%, 100=24.15%, 250=11.78% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.06%, sys=2.25%, ctx=4963, 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=179300: Wed Aug 19 02:42:32 2026 read: IOPS=9, BW=38.3KiB/s (39.3kB/s)(6028KiB/157199msec) clat (msec): min=4, max=240, avg=41.19, stdev=34.26 lat (msec): min=4, max=240, avg=41.19, stdev=34.26 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=[ 35], | 70.00th=[ 45], 80.00th=[ 62], 90.00th=[ 90], 95.00th=[ 114], | 99.00th=[ 165], 99.50th=[ 184], 99.90th=[ 220], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 7, max= 183, per=25.56%, avg=38.60, stdev=24.89, samples=305 iops : min= 1, max= 45, avg= 9.01, stdev= 6.26, samples=305 write: IOPS=9, BW=39.8KiB/s (40.8kB/s)(6260KiB/157199msec); 0 zone resets clat (msec): min=10, max=924, avg=60.71, stdev=46.19 lat (msec): min=10, max=924, avg=60.71, stdev=46.19 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 85], 90.00th=[ 112], 95.00th=[ 140], | 99.00th=[ 215], 99.50th=[ 234], 99.90th=[ 388], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7, max= 119, per=24.86%, avg=39.53, stdev=23.20, samples=309 iops : min= 1, max= 29, avg= 9.24, stdev= 5.84, samples=309 lat (msec) : 10=1.73%, 20=15.20%, 50=46.39%, 100=25.62%, 250=10.90% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.07%, sys=2.22%, ctx=4970, 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=179301: Wed Aug 19 02:42:32 2026 read: IOPS=9, BW=38.6KiB/s (39.6kB/s)(6052KiB/156641msec) clat (msec): min=5, max=286, avg=41.24, stdev=35.44 lat (msec): min=5, max=286, avg=41.24, stdev=35.44 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 45], 80.00th=[ 63], 90.00th=[ 92], 95.00th=[ 116], | 99.00th=[ 165], 99.50th=[ 186], 99.90th=[ 257], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 7, max= 136, per=25.90%, avg=39.12, stdev=25.22, samples=302 iops : min= 1, max= 34, avg= 9.14, stdev= 6.35, samples=302 write: IOPS=9, BW=39.8KiB/s (40.8kB/s)(6236KiB/156641msec); 0 zone resets clat (msec): min=11, max=905, avg=60.37, stdev=45.61 lat (msec): min=11, max=905, avg=60.38, stdev=45.61 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 88], 90.00th=[ 114], 95.00th=[ 136], | 99.00th=[ 201], 99.50th=[ 253], 99.90th=[ 393], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 118, per=24.94%, avg=39.65, stdev=23.48, samples=307 iops : min= 1, max= 29, avg= 9.27, stdev= 5.92, samples=307 lat (msec) : 10=1.99%, 20=16.54%, 50=45.12%, 100=24.80%, 250=11.23% lat (msec) : 500=0.29%, 1000=0.03% cpu : usr=0.06%, sys=2.34%, ctx=4990, 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=152KiB/s (156kB/s), 37.6KiB/s-38.6KiB/s (38.5kB/s-39.6kB/s), io=23.4MiB (24.6MB), run=156641-158008msec WRITE: bw=159KiB/s (163kB/s), 39.8KiB/s-40.2KiB/s (40.8kB/s-41.1kB/s), io=24.6MiB (25.7MB), run=156641-158008msec 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=179346: Wed Aug 19 02:43:23 2026 read: IOPS=10, BW=164KiB/s (168kB/s)(5920KiB/36106msec) clat (usec): min=38, max=230243, avg=50857.47, stdev=37677.69 lat (usec): min=38, max=230244, avg=50858.66, stdev=37677.73 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 63], 10.00th=[ 196], 20.00th=[ 22938], | 30.00th=[ 30278], 40.00th=[ 36963], 50.00th=[ 44827], 60.00th=[ 52691], | 70.00th=[ 62653], 80.00th=[ 72877], 90.00th=[ 95945], 95.00th=[115868], | 99.00th=[198181], 99.50th=[225444], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 31, max= 411, per=26.00%, avg=165.88, stdev=74.98, samples=69 iops : min= 1, max= 25, avg= 9.55, stdev= 4.73, samples=69 write: IOPS=11, BW=176KiB/s (181kB/s)(6368KiB/36106msec); 0 zone resets clat (usec): min=1306, max=264141, avg=42764.76, stdev=43163.32 lat (usec): min=1308, max=264142, avg=42776.34, stdev=43163.09 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2114], 10.00th=[ 3425], 20.00th=[ 6456], | 30.00th=[ 10945], 40.00th=[ 19006], 50.00th=[ 30802], 60.00th=[ 42206], | 70.00th=[ 54789], 80.00th=[ 74974], 90.00th=[ 99091], 95.00th=[124257], | 99.00th=[191890], 99.50th=[231736], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 30, max= 405, per=26.36%, avg=176.90, stdev=82.41, samples=70 iops : min= 1, max= 25, avg=10.24, stdev= 5.19, samples=70 lat (usec) : 50=0.65%, 100=3.65%, 250=0.52%, 500=0.26% lat (msec) : 2=2.21%, 4=4.95%, 10=7.94%, 20=9.24%, 50=31.51% lat (msec) : 100=29.69%, 250=9.24%, 500=0.13% cpu : usr=0.05%, sys=5.57%, ctx=1648, 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=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=179347: Wed Aug 19 02:43:23 2026 read: IOPS=9, BW=153KiB/s (157kB/s)(5744KiB/37510msec) clat (usec): min=52, max=229407, avg=55950.64, stdev=35923.66 lat (usec): min=54, max=229408, avg=55952.08, stdev=35923.67 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 147], 10.00th=[ 21103], 20.00th=[ 29754], | 30.00th=[ 36963], 40.00th=[ 43254], 50.00th=[ 49546], 60.00th=[ 54789], | 70.00th=[ 66323], 80.00th=[ 79168], 90.00th=[100140], 95.00th=[123208], | 99.00th=[200279], 99.50th=[212861], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 21, max= 318, per=24.12%, avg=153.92, stdev=62.27, samples=72 iops : min= 1, max= 19, avg= 8.79, stdev= 3.91, samples=72 write: IOPS=10, BW=174KiB/s (179kB/s)(6544KiB/37510msec); 0 zone resets clat (usec): min=1429, max=275368, avg=41637.47, stdev=42092.28 lat (usec): min=1430, max=275371, avg=41639.70, stdev=42092.23 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 2008], 10.00th=[ 3130], 20.00th=[ 7308], | 30.00th=[ 12387], 40.00th=[ 20841], 50.00th=[ 27919], 60.00th=[ 39060], | 70.00th=[ 51643], 80.00th=[ 69731], 90.00th=[101188], 95.00th=[126354], | 99.00th=[181404], 99.50th=[204473], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 31, max= 351, per=25.76%, avg=172.84, stdev=79.67, samples=73 iops : min= 1, max= 21, avg= 9.99, stdev= 5.03, samples=73 lat (usec) : 100=2.08%, 250=0.39% lat (msec) : 2=2.73%, 4=3.65%, 10=7.42%, 20=8.85%, 50=35.81% lat (msec) : 100=29.17%, 250=9.77%, 500=0.13% cpu : usr=0.08%, sys=5.36%, ctx=1707, 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=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=179348: Wed Aug 19 02:43:23 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(6256KiB/36409msec) clat (usec): min=40, max=216971, avg=50022.05, stdev=33465.45 lat (usec): min=40, max=216973, avg=50023.46, stdev=33465.29 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 62], 10.00th=[ 265], 20.00th=[ 24773], | 30.00th=[ 33162], 40.00th=[ 40633], 50.00th=[ 46924], 60.00th=[ 51643], | 70.00th=[ 61080], 80.00th=[ 72877], 90.00th=[ 94897], 95.00th=[110625], | 99.00th=[152044], 99.50th=[193987], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 43, max= 350, per=27.05%, avg=172.61, stdev=76.57, samples=71 iops : min= 2, max= 21, avg= 9.99, stdev= 4.84, samples=71 write: IOPS=10, BW=166KiB/s (170kB/s)(6032KiB/36409msec); 0 zone resets clat (usec): min=1233, max=230530, avg=44136.55, stdev=42138.48 lat (usec): min=1234, max=230534, avg=44138.80, stdev=42138.56 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 2008], 10.00th=[ 2933], 20.00th=[ 6456], | 30.00th=[ 11338], 40.00th=[ 21627], 50.00th=[ 32375], 60.00th=[ 44303], | 70.00th=[ 58983], 80.00th=[ 77071], 90.00th=[109577], 95.00th=[127402], | 99.00th=[170918], 99.50th=[208667], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 31, max= 412, per=24.94%, avg=167.34, stdev=78.30, samples=70 iops : min= 1, max= 25, avg= 9.64, stdev= 4.93, samples=70 lat (usec) : 50=0.78%, 100=4.30%, 500=0.26% lat (msec) : 2=2.47%, 4=3.91%, 10=8.20%, 20=7.03%, 50=33.20% lat (msec) : 100=30.08%, 250=9.77% cpu : usr=0.07%, sys=5.60%, ctx=1738, 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=179349: Wed Aug 19 02:43:23 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(6032KiB/35972msec) clat (usec): min=41, max=203930, avg=50911.98, stdev=32959.56 lat (usec): min=41, max=203931, avg=50915.29, stdev=32959.30 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 64], 10.00th=[ 3425], 20.00th=[ 26870], | 30.00th=[ 34341], 40.00th=[ 39584], 50.00th=[ 46924], 60.00th=[ 55313], | 70.00th=[ 61604], 80.00th=[ 73925], 90.00th=[ 90702], 95.00th=[107480], | 99.00th=[156238], 99.50th=[198181], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 31, max= 382, per=26.20%, avg=167.16, stdev=73.34, samples=70 iops : min= 1, max= 23, avg= 9.66, stdev= 4.61, samples=70 write: IOPS=10, BW=174KiB/s (178kB/s)(6256KiB/35972msec); 0 zone resets clat (usec): min=1341, max=249815, avg=41860.82, stdev=41605.27 lat (usec): min=1343, max=249817, avg=41863.00, stdev=41605.16 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2008], 10.00th=[ 3195], 20.00th=[ 6783], | 30.00th=[ 12780], 40.00th=[ 22152], 50.00th=[ 31851], 60.00th=[ 40633], | 70.00th=[ 51643], 80.00th=[ 66847], 90.00th=[ 92799], 95.00th=[130548], | 99.00th=[179307], 99.50th=[217056], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 31, max= 477, per=25.98%, avg=174.36, stdev=86.76, samples=70 iops : min= 1, max= 29, avg=10.09, stdev= 5.48, samples=70 lat (usec) : 50=0.26%, 100=3.91%, 250=0.26% lat (msec) : 2=2.73%, 4=4.43%, 10=7.03%, 20=6.90%, 50=35.55% lat (msec) : 100=30.73%, 250=8.20% cpu : usr=0.06%, sys=5.17%, ctx=1650, 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=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=639KiB/s (654kB/s), 153KiB/s-172KiB/s (157kB/s-176kB/s), io=23.4MiB (24.5MB), run=35972-37510msec WRITE: bw=672KiB/s (688kB/s), 166KiB/s-176KiB/s (170kB/s-181kB/s), io=24.6MiB (25.8MB), run=35972-37510msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179342: Wed Aug 19 02:43:33 2026 read: IOPS=7, BW=125KiB/s (128kB/s)(5920KiB/47312msec) clat (msec): min=7, max=293, avg=50.60, stdev=48.87 lat (msec): min=7, max=293, avg=50.60, stdev=48.87 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 75], 90.00th=[ 117], 95.00th=[ 157], | 99.00th=[ 241], 99.50th=[ 271], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 442, per=26.47%, avg=131.57, stdev=94.44, samples=88 iops : min= 1, max= 27, avg= 7.44, stdev= 6.05, samples=88 write: IOPS=8, BW=135KiB/s (138kB/s)(6368KiB/47312msec); 0 zone resets clat (msec): min=13, max=301, avg=71.62, stdev=51.49 lat (msec): min=13, max=301, avg=71.63, stdev=51.51 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 86], 80.00th=[ 109], 90.00th=[ 142], 95.00th=[ 178], | 99.00th=[ 253], 99.50th=[ 275], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 480, per=25.96%, avg=135.79, stdev=91.02, samples=92 iops : min= 1, max= 30, avg= 7.70, stdev= 5.86, samples=92 lat (msec) : 10=0.78%, 20=13.15%, 50=43.23%, 100=24.74%, 250=17.19% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=1.87%, ctx=1198, 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=179343: Wed Aug 19 02:43:33 2026 read: IOPS=7, BW=119KiB/s (122kB/s)(5744KiB/48146msec) clat (msec): min=7, max=374, avg=51.95, stdev=51.31 lat (msec): min=7, max=374, avg=51.95, stdev=51.31 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 42], | 70.00th=[ 54], 80.00th=[ 73], 90.00th=[ 125], 95.00th=[ 167], | 99.00th=[ 232], 99.50th=[ 292], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 21, max= 480, per=25.35%, avg=126.01, stdev=89.79, samples=88 iops : min= 1, max= 30, avg= 7.09, stdev= 5.73, samples=88 write: IOPS=8, BW=136KiB/s (139kB/s)(6544KiB/48146msec); 0 zone resets clat (msec): min=14, max=348, avg=70.73, stdev=51.24 lat (msec): min=14, max=348, avg=70.73, stdev=51.24 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 68], | 70.00th=[ 89], 80.00th=[ 110], 90.00th=[ 134], 95.00th=[ 169], | 99.00th=[ 247], 99.50th=[ 292], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 31, max= 480, per=26.06%, avg=136.32, stdev=92.77, samples=92 iops : min= 1, max= 30, avg= 7.73, stdev= 5.94, samples=92 lat (msec) : 10=2.08%, 20=11.85%, 50=42.97%, 100=23.96%, 250=18.36% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=1.93%, ctx=1230, 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=179344: Wed Aug 19 02:43:33 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(6256KiB/48089msec) clat (msec): min=7, max=352, avg=52.84, stdev=50.08 lat (msec): min=7, max=352, avg=52.84, stdev=50.08 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 43], | 70.00th=[ 58], 80.00th=[ 81], 90.00th=[ 127], 95.00th=[ 167], | 99.00th=[ 234], 99.50th=[ 251], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 480, per=27.23%, avg=135.31, stdev=101.43, samples=90 iops : min= 1, max= 30, avg= 7.67, stdev= 6.48, samples=90 write: IOPS=7, BW=125KiB/s (128kB/s)(6032KiB/48089msec); 0 zone resets clat (msec): min=11, max=291, avg=72.04, stdev=51.63 lat (msec): min=11, max=291, avg=72.04, stdev=51.63 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 71], | 70.00th=[ 86], 80.00th=[ 111], 90.00th=[ 142], 95.00th=[ 180], | 99.00th=[ 264], 99.50th=[ 288], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 480, per=24.28%, avg=126.97, stdev=87.74, samples=91 iops : min= 1, max= 30, avg= 7.14, stdev= 5.61, samples=91 lat (msec) : 10=1.30%, 20=14.84%, 50=39.84%, 100=25.13%, 250=17.97% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=1.87%, ctx=1255, 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=179345: Wed Aug 19 02:43:33 2026 read: IOPS=7, BW=128KiB/s (131kB/s)(6032KiB/47133msec) clat (msec): min=7, max=223, avg=48.94, stdev=40.84 lat (msec): min=7, max=223, avg=48.95, stdev=40.84 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 43], | 70.00th=[ 55], 80.00th=[ 73], 90.00th=[ 109], 95.00th=[ 136], | 99.00th=[ 201], 99.50th=[ 222], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 416, per=26.69%, avg=132.65, stdev=90.41, samples=88 iops : min= 1, max= 26, avg= 7.50, stdev= 5.80, samples=88 write: IOPS=8, BW=133KiB/s (136kB/s)(6256KiB/47133msec); 0 zone resets clat (msec): min=12, max=354, avg=72.14, stdev=53.00 lat (msec): min=12, max=354, avg=72.14, stdev=53.00 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 38], 40.00th=[ 45], 50.00th=[ 55], 60.00th=[ 69], | 70.00th=[ 89], 80.00th=[ 108], 90.00th=[ 144], 95.00th=[ 167], | 99.00th=[ 271], 99.50th=[ 292], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 21, max= 512, per=25.22%, avg=131.90, stdev=93.37, samples=92 iops : min= 1, max= 32, avg= 7.46, stdev= 5.97, samples=92 lat (msec) : 10=1.17%, 20=12.76%, 50=42.97%, 100=24.87%, 250=17.71% lat (msec) : 500=0.52% cpu : usr=0.04%, sys=1.93%, ctx=1222, 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=497KiB/s (509kB/s), 119KiB/s-130KiB/s (122kB/s-133kB/s), io=23.4MiB (24.5MB), run=47133-48146msec WRITE: bw=523KiB/s (536kB/s), 125KiB/s-136KiB/s (128kB/s-139kB/s), io=24.6MiB (25.8MB), run=47133-48146msec 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=179361: Wed Aug 19 02:43:50 2026 read: IOPS=1, BW=1523KiB/s (1559kB/s)(7168KiB/4708msec) clat (usec): min=387, max=2770.1k, avg=498738.78, stdev=1003334.16 lat (usec): min=388, max=2770.1k, avg=498740.26, stdev=1003334.02 clat percentiles (usec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], | 20.00th=[ 113771], 30.00th=[ 130548], 40.00th=[ 130548], | 50.00th=[ 137364], 60.00th=[ 141558], 70.00th=[ 141558], | 80.00th=[ 198181], 90.00th=[2768241], 95.00th=[2768241], | 99.00th=[2768241], 99.50th=[2768241], 99.90th=[2768241], | 99.95th=[2768241], 99.99th=[2768241] bw ( KiB/s): min= 1988, max= 4063, per=86.65%, avg=2808.25, stdev=1003.94, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1088KiB/s (1114kB/s)(5120KiB/4708msec); 0 zone resets clat (msec): min=164, max=331, avg=241.67, stdev=76.34 lat (msec): min=164, max=331, avg=241.75, stdev=76.34 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 236], 60.00th=[ 236], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 1988, max= 4047, per=59.25%, avg=2688.67, stdev=1176.55, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=66.67%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=13.04%, ctx=678, 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=179362: Wed Aug 19 02:43:50 2026 read: IOPS=0, BW=324KiB/s (332kB/s)(2048KiB/6318msec) clat (msec): min=131, max=202, avg=166.90, stdev=49.97 lat (msec): min=131, max=202, avg=166.90, stdev=49.97 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 132], | 30.00th=[ 132], 40.00th=[ 132], 50.00th=[ 132], 60.00th=[ 203], | 70.00th=[ 203], 80.00th=[ 203], 90.00th=[ 203], 95.00th=[ 203], | 99.00th=[ 203], 99.50th=[ 203], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 1514, max= 1992, per=54.09%, avg=1753.00, stdev=338.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1621KiB/s (1660kB/s)(10.0MiB/6318msec); 0 zone resets clat (msec): min=114, max=3776, avg=594.49, stdev=1127.13 lat (msec): min=114, max=3776, avg=594.56, stdev=1127.13 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 120], | 30.00th=[ 144], 40.00th=[ 148], 50.00th=[ 192], 60.00th=[ 220], | 70.00th=[ 300], 80.00th=[ 351], 90.00th=[ 584], 95.00th=[ 3775], | 99.00th=[ 3775], 99.50th=[ 3775], 99.90th=[ 3775], 99.95th=[ 3775], | 99.99th=[ 3775] bw ( KiB/s): min= 2027, max= 4096, per=80.08%, avg=3634.00, stdev=899.66, samples=5 iops : min= 1, max= 4, avg= 2.80, stdev= 1.10, samples=5 lat (msec) : 250=66.67%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=7.82%, ctx=111, 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=179363: Wed Aug 19 02:43:50 2026 read: IOPS=1, BW=1275KiB/s (1306kB/s)(6144KiB/4818msec) clat (usec): min=534, max=226912, avg=102084.92, stdev=90154.63 lat (usec): min=535, max=226913, avg=102086.04, stdev=90154.67 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 3982], | 30.00th=[ 3982], 40.00th=[ 95945], 50.00th=[ 95945], 60.00th=[112722], | 70.00th=[173016], 80.00th=[173016], 90.00th=[227541], 95.00th=[227541], | 99.00th=[227541], 99.50th=[227541], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 1988, max= 6071, per=100.00%, avg=3363.33, stdev=2345.01, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1275KiB/s (1306kB/s)(6144KiB/4818msec); 0 zone resets clat (msec): min=174, max=2815, avg=694.13, stdev=1041.67 lat (msec): min=174, max=2815, avg=694.21, stdev=1041.68 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 321], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 2802], 95.00th=[ 2802], | 99.00th=[ 2802], 99.50th=[ 2802], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 2023, max= 3976, per=61.25%, avg=2779.50, stdev=941.51, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 100=8.33%, 250=41.67%, 500=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=7.64%, ctx=166, 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=179364: Wed Aug 19 02:43:50 2026 read: IOPS=1, BW=1044KiB/s (1069kB/s)(5120KiB/4905msec) clat (usec): min=641, max=222160, avg=104534.13, stdev=102209.86 lat (usec): min=641, max=222161, avg=104535.24, stdev=102210.12 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 644], 10.00th=[ 644], 20.00th=[ 644], | 30.00th=[ 1205], 40.00th=[ 1205], 50.00th=[113771], 60.00th=[113771], | 70.00th=[183501], 80.00th=[183501], 90.00th=[221250], 95.00th=[221250], | 99.00th=[221250], 99.50th=[221250], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1461KiB/s (1496kB/s)(7168KiB/4905msec); 0 zone resets clat (msec): min=147, max=2772, avg=620.40, stdev=957.45 lat (msec): min=147, max=2772, avg=620.56, stdev=957.41 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 155], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 226], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 443], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 1471, max= 6095, per=84.78%, avg=3847.33, stdev=2314.68, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=58.33%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=8.63%, ctx=119, 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=3242KiB/s (3319kB/s), 324KiB/s-1523KiB/s (332kB/s-1559kB/s), io=20.0MiB (20.0MB), run=4708-6318msec WRITE: bw=4538KiB/s (4647kB/s), 1088KiB/s-1621KiB/s (1114kB/s-1660kB/s), io=28.0MiB (29.4MB), run=4708-6318msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179366: Wed Aug 19 02:43:50 2026 read: IOPS=1, BW=1161KiB/s (1189kB/s)(7168KiB/6174msec) clat (msec): min=79, max=3292, avg=681.60, stdev=1175.71 lat (msec): min=79, max=3292, avg=681.60, stdev=1175.71 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 89], | 30.00th=[ 96], 40.00th=[ 96], 50.00th=[ 127], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 735], 90.00th=[ 3306], 95.00th=[ 3306], | 99.00th=[ 3306], 99.50th=[ 3306], 99.90th=[ 3306], 99.95th=[ 3306], | 99.99th=[ 3306] bw ( KiB/s): min= 1684, max= 3893, per=73.21%, avg=2338.20, stdev=882.62, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=829KiB/s (849kB/s)(5120KiB/6174msec); 0 zone resets clat (msec): min=115, max=538, avg=211.84, stdev=183.12 lat (msec): min=115, max=538, avg=211.94, stdev=183.11 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 116], | 30.00th=[ 122], 40.00th=[ 122], 50.00th=[ 132], 60.00th=[ 132], | 70.00th=[ 153], 80.00th=[ 153], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 2023, max= 4096, per=75.95%, avg=3396.67, stdev=1189.70, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 lat (msec) : 100=25.00%, 250=41.67%, 500=8.33%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=3.18%, ctx=89, 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=179367: Wed Aug 19 02:43:50 2026 read: IOPS=0, BW=319KiB/s (327kB/s)(2048KiB/6411msec) clat (msec): min=103, max=149, avg=126.71, stdev=32.42 lat (msec): min=103, max=149, avg=126.72, stdev=32.43 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 104], 60.00th=[ 150], | 70.00th=[ 150], 80.00th=[ 150], 90.00th=[ 150], 95.00th=[ 150], | 99.00th=[ 150], 99.50th=[ 150], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 1861, max= 1946, per=59.60%, avg=1903.50, stdev=60.10, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1597KiB/s (1636kB/s)(10.0MiB/6411msec); 0 zone resets clat (msec): min=94, max=3848, avg=593.54, stdev=1149.65 lat (msec): min=95, max=3849, avg=593.61, stdev=1149.65 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 129], | 30.00th=[ 146], 40.00th=[ 176], 50.00th=[ 207], 60.00th=[ 224], | 70.00th=[ 251], 80.00th=[ 426], 90.00th=[ 435], 95.00th=[ 3842], | 99.00th=[ 3842], 99.50th=[ 3842], 99.90th=[ 3842], 99.95th=[ 3842], | 99.99th=[ 3842] bw ( KiB/s): min= 1946, max= 6144, per=72.76%, avg=3253.80, stdev=1851.51, samples=5 iops : min= 1, max= 6, avg= 2.80, stdev= 2.17, samples=5 lat (msec) : 100=8.33%, 250=58.33%, 500=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=3.81%, ctx=88, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179368: Wed Aug 19 02:43:50 2026 read: IOPS=0, BW=984KiB/s (1008kB/s)(6144KiB/6244msec) clat (msec): min=87, max=344, avg=135.84, stdev=102.31 lat (msec): min=87, max=344, avg=135.85, stdev=102.31 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 93], | 30.00th=[ 93], 40.00th=[ 96], 50.00th=[ 96], 60.00th=[ 96], | 70.00th=[ 99], 80.00th=[ 99], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 1946, max= 4071, per=78.96%, avg=2522.00, stdev=1033.58, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=984KiB/s (1008kB/s)(6144KiB/6244msec); 0 zone resets clat (msec): min=137, max=3898, avg=868.64, stdev=1489.13 lat (msec): min=137, max=3898, avg=868.72, stdev=1489.12 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 355], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 3910], 95.00th=[ 3910], | 99.00th=[ 3910], 99.50th=[ 3910], 99.90th=[ 3910], 99.95th=[ 3910], | 99.99th=[ 3910] bw ( KiB/s): min= 1805, max= 2048, per=44.54%, avg=1991.80, stdev=104.94, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 100=41.67%, 250=25.00%, 500=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=3.01%, ctx=70, 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=179369: Wed Aug 19 02:43:50 2026 read: IOPS=0, BW=808KiB/s (827kB/s)(5120KiB/6339msec) clat (msec): min=68, max=403, avg=229.05, stdev=148.72 lat (msec): min=68, max=403, avg=229.05, stdev=148.72 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 68], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 169], 60.00th=[ 169], | 70.00th=[ 372], 80.00th=[ 372], 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= 3893, max= 4071, per=100.00%, avg=3982.00, stdev=125.87, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1131KiB/s (1158kB/s)(7168KiB/6339msec); 0 zone resets clat (msec): min=115, max=3286, avg=713.95, stdev=1141.74 lat (msec): min=116, max=3286, avg=714.16, stdev=1141.71 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 171], | 30.00th=[ 220], 40.00th=[ 220], 50.00th=[ 305], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 468], 90.00th=[ 3272], 95.00th=[ 3272], | 99.00th=[ 3272], 99.50th=[ 3272], 99.90th=[ 3272], 99.95th=[ 3272], | 99.99th=[ 3272] bw ( KiB/s): min= 1892, max= 4047, per=56.07%, avg=2507.50, stdev=1028.88, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=41.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.45%, ctx=73, 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=3195KiB/s (3271kB/s), 319KiB/s-1161KiB/s (327kB/s-1189kB/s), io=20.0MiB (20.0MB), run=6174-6411msec WRITE: bw=4472KiB/s (4580kB/s), 829KiB/s-1597KiB/s (849kB/s-1636kB/s), io=28.0MiB (29.4MB), run=6174-6411msec 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=179375: Wed Aug 19 02:44:04 2026 read: IOPS=1, BW=5540KiB/s (5673kB/s)(12.0MiB/2218msec) clat (msec): min=661, max=808, avg=730.14, stdev=73.82 lat (msec): min=661, max=808, avg=730.14, stdev=73.82 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 8062, max= 8143, per=100.00%, avg=8102.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=13.49%, ctx=420, 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=179376: Wed Aug 19 02:44:04 2026 read: IOPS=0, BW=1260KiB/s (1290kB/s)(4096KiB/3252msec) clat (nsec): min=638896k, max=638896k, avg=638895762.00, stdev= 0.00 lat (nsec): min=638898k, max=638898k, avg=638898159.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2519KiB/s (2580kB/s)(8192KiB/3252msec); 0 zone resets clat (msec): min=1216, max=1331, avg=1274.07, stdev=81.41 lat (msec): min=1216, max=1331, avg=1274.25, stdev=81.40 clat percentiles (msec): | 1.00th=[ 1217], 5.00th=[ 1217], 10.00th=[ 1217], 20.00th=[ 1217], | 30.00th=[ 1217], 40.00th=[ 1217], 50.00th=[ 1217], 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= 8126, max= 8126, per=80.65%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.06%, sys=2.71%, ctx=298, 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=179377: Wed Aug 19 02:44:04 2026 write: IOPS=0, BW=4033KiB/s (4130kB/s)(12.0MiB/3047msec); 0 zone resets clat (msec): min=297, max=1892, avg=1002.96, stdev=813.61 lat (msec): min=297, max=1893, avg=1003.27, stdev=813.53 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 818], | 70.00th=[ 1888], 80.00th=[ 1888], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 8143, max= 8143, per=80.82%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.76%, ctx=56, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179378: Wed Aug 19 02:44:04 2026 write: IOPS=1, BW=4699KiB/s (4812kB/s)(12.0MiB/2615msec); 0 zone resets clat (msec): min=275, max=1565, avg=870.00, stdev=650.98 lat (msec): min=277, max=1566, avg=870.72, stdev=650.51 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 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= 8015, max= 8143, per=80.18%, avg=8079.00, stdev=90.51, 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=0.15%, sys=4.78%, ctx=52, 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=5038KiB/s (5159kB/s), 1260KiB/s-5540KiB/s (1290kB/s-5673kB/s), io=16.0MiB (16.8MB), run=2218-3252msec WRITE: bw=9.84MiB/s (10.3MB/s), 2519KiB/s-4699KiB/s (2580kB/s-4812kB/s), io=32.0MiB (33.6MB), run=2615-3252msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179380: Wed Aug 19 02:44:04 2026 read: IOPS=1, BW=6621KiB/s (6780kB/s)(12.0MiB/1856msec) clat (msec): min=344, max=803, avg=612.76, stdev=238.70 lat (msec): min=344, max=803, avg=612.76, stdev=238.70 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 8126, max= 8175, per=100.00%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=4.64%, ctx=38, 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=179382: Wed Aug 19 02:44:04 2026 read: IOPS=0, BW=1408KiB/s (1442kB/s)(4096KiB/2909msec) clat (nsec): min=1484.3M, max=1484.3M, avg=1484328898.00, stdev= 0.00 lat (nsec): min=1484.3M, max=1484.3M, avg=1484329646.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1485], 5.00th=[ 1485], 10.00th=[ 1485], 20.00th=[ 1485], | 30.00th=[ 1485], 40.00th=[ 1485], 50.00th=[ 1485], 60.00th=[ 1485], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 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=2816KiB/s (2884kB/s)(8192KiB/2909msec); 0 zone resets clat (msec): min=557, max=862, avg=710.12, stdev=215.55 lat (msec): min=559, max=862, avg=711.37, stdev=214.28 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=[ 860], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 8192, max= 8192, per=72.73%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.20%, ctx=36, 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=179383: Wed Aug 19 02:44:04 2026 write: IOPS=1, BW=4291KiB/s (4393kB/s)(12.0MiB/2864msec); 0 zone resets clat (msec): min=176, max=1539, avg=926.42, stdev=691.52 lat (msec): min=177, max=1540, avg=926.99, stdev=691.59 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1536], 80.00th=[ 1536], 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= 8175, max= 8175, per=72.58%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.25%, ctx=39, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179384: Wed Aug 19 02:44:04 2026 write: IOPS=1, BW=4713KiB/s (4827kB/s)(12.0MiB/2607msec); 0 zone resets clat (msec): min=393, max=1363, avg=867.59, stdev=485.20 lat (msec): min=394, max=1364, avg=868.28, stdev=485.75 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 8126, max= 8126, per=72.14%, avg=8126.00, stdev= 0.00, 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=3.42%, ctx=51, 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=5632KiB/s (5767kB/s), 1408KiB/s-6621KiB/s (1442kB/s-6780kB/s), io=16.0MiB (16.8MB), run=1856-2909msec WRITE: bw=11.0MiB/s (11.5MB/s), 2816KiB/s-4713KiB/s (2884kB/s-4827kB/s), io=32.0MiB (33.6MB), run=2607-2909msec