== sanity test 398b: DIO and buffer IO race ============== 09:16:11 (1790946971) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.01287 s, 8.4 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=180515: Fri Oct 2 09:18:28 2026 read: IOPS=12, BW=50.7KiB/s (51.9kB/s)(5992KiB/118207msec) clat (usec): min=30, max=555695, avg=44217.47, stdev=34737.95 lat (usec): min=30, max=555696, avg=44219.66, stdev=34738.29 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10159], 10.00th=[ 15139], 20.00th=[ 21103], | 30.00th=[ 26084], 40.00th=[ 30802], 50.00th=[ 36439], 60.00th=[ 43254], | 70.00th=[ 51643], 80.00th=[ 62653], 90.00th=[ 82314], 95.00th=[100140], | 99.00th=[160433], 99.50th=[210764], 99.90th=[425722], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 7, max= 127, per=24.90%, avg=50.30, stdev=21.01, samples=233 iops : min= 1, max= 31, avg=11.92, stdev= 5.27, samples=233 write: IOPS=13, BW=53.3KiB/s (54.5kB/s)(6296KiB/118207msec); 0 zone resets clat (usec): min=881, max=333485, avg=32909.99, stdev=36047.23 lat (usec): min=882, max=333486, avg=32916.03, stdev=36053.55 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1156], 10.00th=[ 1287], 20.00th=[ 2704], | 30.00th=[ 6390], 40.00th=[ 14222], 50.00th=[ 22152], 60.00th=[ 31065], | 70.00th=[ 41157], 80.00th=[ 56886], 90.00th=[ 80217], 95.00th=[103285], | 99.00th=[156238], 99.50th=[181404], 99.90th=[235930], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 7, max= 119, per=25.25%, avg=53.29, stdev=23.85, samples=231 iops : min= 1, max= 29, avg=12.67, stdev= 6.00, samples=231 lat (usec) : 50=0.29%, 100=1.37%, 250=0.07%, 1000=0.23% lat (msec) : 2=7.85%, 4=3.97%, 10=6.77%, 20=12.24%, 50=39.16% lat (msec) : 100=22.79%, 250=5.14%, 500=0.10%, 750=0.03% cpu : usr=0.07%, sys=4.68%, ctx=6232, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180516: Fri Oct 2 09:18:28 2026 read: IOPS=12, BW=51.6KiB/s (52.9kB/s)(5940KiB/115040msec) clat (usec): min=33, max=502815, avg=43054.30, stdev=32368.09 lat (usec): min=33, max=502816, avg=43055.77, stdev=32367.96 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 9241], 10.00th=[ 15139], 20.00th=[ 19792], | 30.00th=[ 25035], 40.00th=[ 30016], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 50594], 80.00th=[ 62653], 90.00th=[ 79168], 95.00th=[ 98042], | 99.00th=[160433], 99.50th=[179307], 99.90th=[227541], 99.95th=[501220], | 99.99th=[501220] bw ( KiB/s): min= 6, max= 111, per=25.27%, avg=51.04, stdev=22.20, samples=227 iops : min= 1, max= 27, avg=12.11, stdev= 5.56, samples=227 write: IOPS=13, BW=55.2KiB/s (56.5kB/s)(6348KiB/115040msec); 0 zone resets clat (usec): min=688, max=342618, avg=32089.93, stdev=36336.22 lat (usec): min=689, max=342620, avg=32094.14, stdev=36336.46 clat percentiles (usec): | 1.00th=[ 1004], 5.00th=[ 1123], 10.00th=[ 1237], 20.00th=[ 2409], | 30.00th=[ 5080], 40.00th=[ 13042], 50.00th=[ 22152], 60.00th=[ 30802], | 70.00th=[ 40109], 80.00th=[ 54789], 90.00th=[ 80217], 95.00th=[101188], | 99.00th=[166724], 99.50th=[185598], 99.90th=[270533], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 7, max= 135, per=25.92%, avg=54.68, stdev=24.46, samples=226 iops : min= 1, max= 33, avg=13.02, stdev= 6.16, samples=226 lat (usec) : 50=0.29%, 100=1.60%, 250=0.13%, 500=0.03%, 750=0.13% lat (usec) : 1000=0.36% lat (msec) : 2=8.85%, 4=4.30%, 10=6.12%, 20=12.73%, 50=38.48% lat (msec) : 100=22.43%, 250=4.46%, 500=0.07%, 750=0.03% cpu : usr=0.06%, sys=4.91%, ctx=6180, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=180517: Fri Oct 2 09:18:28 2026 read: IOPS=12, BW=50.8KiB/s (51.0kB/s)(6028KiB/118759msec) clat (usec): min=33, max=347925, avg=42803.51, stdev=30180.77 lat (usec): min=34, max=347926, avg=42812.86, stdev=30175.44 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 7308], 10.00th=[ 14877], 20.00th=[ 20317], | 30.00th=[ 25297], 40.00th=[ 30802], 50.00th=[ 36963], 60.00th=[ 43254], | 70.00th=[ 51643], 80.00th=[ 60031], 90.00th=[ 80217], 95.00th=[ 95945], | 99.00th=[147850], 99.50th=[170918], 99.90th=[242222], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 7, max= 119, per=24.92%, avg=50.33, stdev=20.49, samples=233 iops : min= 1, max= 29, avg=11.93, stdev= 5.13, samples=233 write: IOPS=13, BW=52.7KiB/s (53.0kB/s)(6260KiB/118759msec); 0 zone resets clat (usec): min=635, max=510293, avg=34540.82, stdev=38380.52 lat (usec): min=637, max=510297, avg=34543.76, stdev=38380.58 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1156], 10.00th=[ 1270], 20.00th=[ 3032], | 30.00th=[ 6587], 40.00th=[ 16319], 50.00th=[ 24249], 60.00th=[ 32900], | 70.00th=[ 44827], 80.00th=[ 57410], 90.00th=[ 83362], 95.00th=[104334], | 99.00th=[162530], 99.50th=[179307], 99.90th=[308282], 99.95th=[509608], | 99.99th=[509608] bw ( KiB/s): min= 6, max= 126, per=24.62%, avg=51.96, stdev=22.57, samples=234 iops : min= 1, max= 31, avg=12.34, stdev= 5.68, samples=234 lat (usec) : 50=0.52%, 100=1.46%, 250=0.10%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.29% lat (msec) : 2=7.78%, 4=4.10%, 10=5.99%, 20=12.01%, 50=39.10% lat (msec) : 100=23.08%, 250=5.27%, 500=0.10%, 750=0.03% cpu : usr=0.07%, sys=4.96%, ctx=6392, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180518: Fri Oct 2 09:18:28 2026 read: IOPS=12, BW=51.3KiB/s (52.5kB/s)(6052KiB/117949msec) clat (usec): min=36, max=270608, avg=42525.65, stdev=29864.75 lat (usec): min=36, max=270609, avg=42527.44, stdev=29864.52 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 510], 10.00th=[ 15008], 20.00th=[ 20841], | 30.00th=[ 25560], 40.00th=[ 30278], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 51119], 80.00th=[ 61604], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[154141], 99.50th=[177210], 99.90th=[246416], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 143, per=25.39%, avg=51.29, stdev=21.27, samples=231 iops : min= 1, max= 35, avg=12.17, stdev= 5.33, samples=231 write: IOPS=13, BW=52.9KiB/s (54.1kB/s)(6236KiB/117949msec); 0 zone resets clat (usec): min=616, max=527628, avg=34278.99, stdev=38461.23 lat (usec): min=616, max=527629, avg=34283.13, stdev=38460.20 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1188], 10.00th=[ 1319], 20.00th=[ 3032], | 30.00th=[ 5997], 40.00th=[ 14746], 50.00th=[ 22414], 60.00th=[ 31589], | 70.00th=[ 43254], 80.00th=[ 60031], 90.00th=[ 87557], 95.00th=[108528], | 99.00th=[149947], 99.50th=[177210], 99.90th=[304088], 99.95th=[526386], | 99.99th=[526386] bw ( KiB/s): min= 6, max= 136, per=24.94%, avg=52.62, stdev=23.63, samples=232 iops : min= 1, max= 34, avg=12.50, stdev= 5.92, samples=232 lat (usec) : 50=0.39%, 100=1.99%, 250=0.07%, 750=0.10%, 1000=0.26% lat (msec) : 2=7.32%, 4=4.65%, 10=5.99%, 20=12.01%, 50=38.93% lat (msec) : 100=22.56%, 250=5.63%, 500=0.07%, 750=0.03% cpu : usr=0.08%, sys=4.76%, ctx=6244, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=202KiB/s (207kB/s), 50.7KiB/s-51.6KiB/s (51.9kB/s-52.9kB/s), io=23.4MiB (24.6MB), run=115040-118759msec WRITE: bw=212KiB/s (217kB/s), 52.7KiB/s-55.2KiB/s (53.0kB/s-56.5kB/s), io=24.6MiB (25.7MB), run=115040-118759msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180509: Fri Oct 2 09:19:07 2026 read: IOPS=9, BW=38.1KiB/s (38.0kB/s)(5992KiB/157468msec) clat (msec): min=5, max=839, avg=40.42, stdev=42.01 lat (msec): min=5, max=839, avg=40.42, stdev=42.01 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 87], 95.00th=[ 116], | 99.00th=[ 180], 99.50th=[ 228], 99.90th=[ 288], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 157, per=25.69%, avg=38.79, stdev=27.21, samples=301 iops : min= 1, max= 39, avg= 9.04, stdev= 6.85, samples=301 write: IOPS=9, BW=39.0KiB/s (40.9kB/s)(6296KiB/157468msec); 0 zone resets clat (msec): min=8, max=477, avg=61.32, stdev=46.58 lat (msec): min=8, max=477, avg=61.32, stdev=46.58 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 92], 90.00th=[ 118], 95.00th=[ 150], | 99.00th=[ 218], 99.50th=[ 284], 99.90th=[ 426], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 7, max= 127, per=25.26%, avg=39.91, stdev=24.66, samples=307 iops : min= 1, max= 31, avg= 9.33, stdev= 6.22, samples=307 lat (msec) : 10=2.93%, 20=16.93%, 50=45.15%, 100=23.08%, 250=11.43% lat (msec) : 500=0.46%, 1000=0.03% cpu : usr=0.05%, sys=1.65%, ctx=4677, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180510: Fri Oct 2 09:19:07 2026 read: IOPS=9, BW=37.5KiB/s (38.4kB/s)(5940KiB/158475msec) clat (msec): min=4, max=816, avg=41.21, stdev=45.12 lat (msec): min=4, max=816, avg=41.21, stdev=45.12 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 57], 90.00th=[ 89], 95.00th=[ 132], | 99.00th=[ 197], 99.50th=[ 247], 99.90th=[ 363], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 127, per=25.00%, avg=37.75, stdev=26.81, samples=306 iops : min= 1, max= 31, avg= 8.78, stdev= 6.75, samples=306 write: IOPS=10, BW=40.1KiB/s (41.0kB/s)(6348KiB/158475msec); 0 zone resets clat (msec): min=10, max=447, avg=61.05, stdev=46.32 lat (msec): min=10, max=447, avg=61.05, stdev=46.32 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 55], | 70.00th=[ 69], 80.00th=[ 90], 90.00th=[ 122], 95.00th=[ 148], | 99.00th=[ 241], 99.50th=[ 271], 99.90th=[ 351], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 126, per=25.41%, avg=40.15, stdev=25.25, samples=308 iops : min= 1, max= 31, avg= 9.38, stdev= 6.36, samples=308 lat (msec) : 10=3.03%, 20=17.64%, 50=44.79%, 100=22.23%, 250=11.72% lat (msec) : 500=0.55%, 1000=0.03% cpu : usr=0.06%, sys=1.65%, ctx=4777, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180511: Fri Oct 2 09:19:07 2026 read: IOPS=9, BW=38.0KiB/s (38.0kB/s)(6028KiB/158435msec) clat (msec): min=4, max=277, avg=40.37, stdev=37.47 lat (msec): min=4, max=277, avg=40.37, stdev=37.47 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 91], 95.00th=[ 122], | 99.00th=[ 176], 99.50th=[ 220], 99.90th=[ 268], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 7, max= 152, per=25.69%, avg=38.79, stdev=26.25, samples=303 iops : min= 1, max= 38, avg= 9.04, stdev= 6.62, samples=303 write: IOPS=9, BW=39.5KiB/s (40.5kB/s)(6260KiB/158435msec); 0 zone resets clat (msec): min=9, max=835, avg=62.11, stdev=50.90 lat (msec): min=9, max=835, avg=62.11, stdev=50.90 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 71], 80.00th=[ 92], 90.00th=[ 125], 95.00th=[ 148], | 99.00th=[ 228], 99.50th=[ 292], 99.90th=[ 447], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7, max= 135, per=24.97%, avg=39.45, stdev=25.77, samples=309 iops : min= 1, max= 33, avg= 9.21, stdev= 6.48, samples=309 lat (msec) : 10=3.26%, 20=16.60%, 50=45.05%, 100=22.62%, 250=11.98% lat (msec) : 500=0.46%, 1000=0.03% cpu : usr=0.05%, sys=1.67%, ctx=4742, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180512: Fri Oct 2 09:19:07 2026 read: IOPS=9, BW=38.4KiB/s (39.3kB/s)(6052KiB/157726msec) clat (msec): min=4, max=295, avg=41.36, stdev=39.02 lat (msec): min=4, max=295, avg=41.36, stdev=39.02 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 59], 90.00th=[ 91], 95.00th=[ 125], | 99.00th=[ 190], 99.50th=[ 215], 99.90th=[ 279], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 160, per=26.32%, avg=39.75, stdev=26.63, samples=296 iops : min= 1, max= 40, avg= 9.29, stdev= 6.71, samples=296 write: IOPS=9, BW=39.5KiB/s (40.5kB/s)(6236KiB/157726msec); 0 zone resets clat (msec): min=8, max=827, avg=60.79, stdev=49.56 lat (msec): min=8, max=827, avg=60.79, stdev=49.57 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 38], 50.00th=[ 46], 60.00th=[ 55], | 70.00th=[ 68], 80.00th=[ 88], 90.00th=[ 123], 95.00th=[ 155], | 99.00th=[ 215], 99.50th=[ 262], 99.90th=[ 481], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 126, per=25.10%, avg=39.66, stdev=24.81, samples=305 iops : min= 1, max= 31, avg= 9.26, stdev= 6.26, samples=305 lat (msec) : 10=2.77%, 20=17.38%, 50=44.99%, 100=22.72%, 250=11.72% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.06%, sys=1.63%, ctx=4737, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=152KiB/s (155kB/s), 37.5KiB/s-38.4KiB/s (38.4kB/s-39.3kB/s), io=23.4MiB (24.6MB), run=157468-158475msec WRITE: bw=159KiB/s (162kB/s), 39.5KiB/s-40.1KiB/s (40.5kB/s-41.0kB/s), io=24.6MiB (25.7MB), run=157468-158475msec 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=180557: Fri Oct 2 09:19:52 2026 read: IOPS=11, BW=184KiB/s (189kB/s)(5920KiB/32128msec) clat (usec): min=48, max=216964, avg=45767.55, stdev=33418.03 lat (usec): min=49, max=216965, avg=45770.76, stdev=33427.32 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 69], 10.00th=[ 13435], 20.00th=[ 22676], | 30.00th=[ 28443], 40.00th=[ 33817], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 55837], 80.00th=[ 64750], 90.00th=[ 81265], 95.00th=[104334], | 99.00th=[185598], 99.50th=[208667], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 31, max= 408, per=24.60%, avg=183.29, stdev=78.34, samples=63 iops : min= 1, max= 25, avg=10.70, stdev= 4.98, samples=63 write: IOPS=12, BW=198KiB/s (203kB/s)(6368KiB/32128msec); 0 zone resets clat (usec): min=1432, max=182149, avg=37988.51, stdev=37472.13 lat (usec): min=1434, max=182151, avg=37990.68, stdev=37472.18 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1893], 10.00th=[ 2573], 20.00th=[ 4817], | 30.00th=[ 7635], 40.00th=[ 16188], 50.00th=[ 27395], 60.00th=[ 38011], | 70.00th=[ 51119], 80.00th=[ 69731], 90.00th=[ 93848], 95.00th=[119014], | 99.00th=[149947], 99.50th=[175113], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 30, max= 448, per=25.30%, avg=198.37, stdev=92.32, samples=63 iops : min= 1, max= 28, avg=11.65, stdev= 5.85, samples=63 lat (usec) : 50=0.13%, 100=3.52%, 250=0.52%, 750=0.13% lat (msec) : 2=3.12%, 4=6.12%, 10=8.72%, 20=7.68%, 50=37.24% lat (msec) : 100=25.52%, 250=7.29% cpu : usr=0.07%, sys=4.72%, ctx=1586, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180558: Fri Oct 2 09:19:52 2026 read: IOPS=11, BW=182KiB/s (186kB/s)(5744KiB/31631msec) clat (usec): min=46, max=187278, avg=46939.30, stdev=30228.20 lat (usec): min=46, max=187279, avg=46940.54, stdev=30228.24 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 92], 10.00th=[ 16450], 20.00th=[ 24511], | 30.00th=[ 30802], 40.00th=[ 36439], 50.00th=[ 42206], 60.00th=[ 48497], | 70.00th=[ 54264], 80.00th=[ 66323], 90.00th=[ 88605], 95.00th=[107480], | 99.00th=[158335], 99.50th=[164627], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 29, max= 380, per=24.17%, avg=180.06, stdev=74.04, samples=62 iops : min= 1, max= 23, avg=10.50, stdev= 4.65, samples=62 write: IOPS=12, BW=207KiB/s (212kB/s)(6544KiB/31631msec); 0 zone resets clat (usec): min=1177, max=268262, avg=36017.84, stdev=36056.98 lat (usec): min=1179, max=268265, avg=36020.83, stdev=36056.45 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1926], 10.00th=[ 2900], 20.00th=[ 6259], | 30.00th=[ 10683], 40.00th=[ 16909], 50.00th=[ 26870], 60.00th=[ 34341], | 70.00th=[ 43254], 80.00th=[ 58459], 90.00th=[ 86508], 95.00th=[109577], | 99.00th=[145753], 99.50th=[166724], 99.90th=[267387], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 61, max= 512, per=26.22%, avg=205.56, stdev=97.66, samples=62 iops : min= 3, max= 32, avg=12.11, stdev= 6.25, samples=62 lat (usec) : 50=0.39%, 100=1.95%, 250=0.26%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=3.52%, 4=4.30%, 10=7.42%, 20=11.33%, 50=39.58% lat (msec) : 100=24.48%, 250=6.12%, 500=0.13% cpu : usr=0.09%, sys=5.02%, ctx=1641, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180559: Fri Oct 2 09:19:52 2026 read: IOPS=12, BW=196KiB/s (200kB/s)(6256KiB/31978msec) clat (usec): min=33, max=250355, avg=45837.45, stdev=34156.68 lat (usec): min=33, max=250357, avg=45838.65, stdev=34156.72 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 63], 10.00th=[ 10945], 20.00th=[ 21627], | 30.00th=[ 27657], 40.00th=[ 35390], 50.00th=[ 41681], 60.00th=[ 46400], | 70.00th=[ 53740], 80.00th=[ 65799], 90.00th=[ 84411], 95.00th=[108528], | 99.00th=[170918], 99.50th=[217056], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 31, max= 479, per=26.24%, avg=195.48, stdev=92.89, samples=63 iops : min= 1, max= 29, avg=11.46, stdev= 5.86, samples=63 write: IOPS=11, BW=189KiB/s (193kB/s)(6032KiB/31978msec); 0 zone resets clat (usec): min=1437, max=265542, avg=37167.38, stdev=39811.00 lat (usec): min=1455, max=265544, avg=37170.71, stdev=39811.96 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1844], 10.00th=[ 2606], 20.00th=[ 7111], | 30.00th=[ 9896], 40.00th=[ 16057], 50.00th=[ 23725], 60.00th=[ 32375], | 70.00th=[ 43779], 80.00th=[ 63701], 90.00th=[ 92799], 95.00th=[121111], | 99.00th=[193987], 99.50th=[217056], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 31, max= 442, per=23.71%, avg=185.87, stdev=83.45, samples=63 iops : min= 1, max= 27, avg=10.86, stdev= 5.29, samples=63 lat (usec) : 50=0.39%, 100=4.04%, 250=0.39%, 750=0.13% lat (msec) : 2=3.39%, 4=2.73%, 10=8.98%, 20=11.20%, 50=38.80% lat (msec) : 100=22.66%, 250=7.03%, 500=0.26% cpu : usr=0.05%, sys=4.96%, ctx=1647, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180560: Fri Oct 2 09:19:52 2026 read: IOPS=11, BW=191KiB/s (196kB/s)(6032KiB/31520msec) clat (usec): min=45, max=314771, avg=48578.63, stdev=37264.88 lat (usec): min=45, max=314773, avg=48579.78, stdev=37264.93 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 64], 10.00th=[ 14746], 20.00th=[ 22676], | 30.00th=[ 29492], 40.00th=[ 33817], 50.00th=[ 40633], 60.00th=[ 47973], | 70.00th=[ 57934], 80.00th=[ 71828], 90.00th=[ 91751], 95.00th=[109577], | 99.00th=[183501], 99.50th=[267387], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 31, max= 384, per=25.41%, avg=189.31, stdev=74.96, samples=62 iops : min= 1, max= 24, avg=11.08, stdev= 4.80, samples=62 write: IOPS=12, BW=198KiB/s (203kB/s)(6256KiB/31520msec); 0 zone resets clat (usec): min=1364, max=269898, avg=33607.63, stdev=36783.44 lat (usec): min=1366, max=269901, avg=33615.17, stdev=36808.32 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1778], 10.00th=[ 2040], 20.00th=[ 4113], | 30.00th=[ 8979], 40.00th=[ 13829], 50.00th=[ 20579], 60.00th=[ 29230], | 70.00th=[ 42730], 80.00th=[ 61080], 90.00th=[ 80217], 95.00th=[104334], | 99.00th=[175113], 99.50th=[198181], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 408, per=25.31%, avg=198.44, stdev=87.93, samples=62 iops : min= 1, max= 25, avg=11.66, stdev= 5.53, samples=62 lat (usec) : 50=0.13%, 100=3.39%, 250=0.13%, 500=0.39%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=5.08%, 4=4.17%, 10=7.68%, 20=11.07%, 50=36.46% lat (msec) : 100=25.52%, 250=5.34%, 500=0.39% cpu : usr=0.06%, sys=5.50%, ctx=1620, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=746KiB/s (763kB/s), 182KiB/s-196KiB/s (186kB/s-200kB/s), io=23.4MiB (24.5MB), run=31520-32128msec WRITE: bw=784KiB/s (803kB/s), 189KiB/s-207KiB/s (193kB/s-212kB/s), io=24.6MiB (25.8MB), run=31520-32128msec fio: pid=180552, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=180552: Fri Oct 2 09:20:05 2026 read: IOPS=7, BW=113KiB/s (116kB/s)(4288KiB/37823msec) clat (msec): min=9, max=252, avg=52.60, stdev=39.78 lat (msec): min=9, max=252, avg=52.61, stdev=39.78 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 35], 50.00th=[ 41], 60.00th=[ 47], | 70.00th=[ 60], 80.00th=[ 73], 90.00th=[ 102], 95.00th=[ 140], | 99.00th=[ 211], 99.50th=[ 211], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 30, max= 349, per=22.99%, avg=113.34, stdev=68.06, samples=74 iops : min= 1, max= 21, avg= 6.23, stdev= 4.30, samples=74 write: IOPS=7, BW=123KiB/s (126kB/s)(4640KiB/37823msec); 0 zone resets clat (msec): min=18, max=265, avg=81.15, stdev=50.39 lat (msec): min=18, max=265, avg=81.16, stdev=50.39 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 40], | 30.00th=[ 48], 40.00th=[ 57], 50.00th=[ 69], 60.00th=[ 81], | 70.00th=[ 93], 80.00th=[ 117], 90.00th=[ 146], 95.00th=[ 192], | 99.00th=[ 245], 99.50th=[ 253], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 31, max= 351, per=23.89%, avg=124.01, stdev=60.89, samples=73 iops : min= 1, max= 21, avg= 6.90, stdev= 3.83, samples=73 lat (msec) : 10=0.18%, 20=6.26%, 50=41.32%, 100=34.17%, 250=17.35% lat (msec) : 500=0.54% cpu : usr=0.04%, sys=1.37%, ctx=803, 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=269,290,0,0 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=180553: Fri Oct 2 09:20:05 2026 read: IOPS=7, BW=128KiB/s (131kB/s)(5744KiB/45011msec) clat (msec): min=7, max=299, avg=46.89, stdev=37.20 lat (msec): min=7, max=299, avg=46.90, stdev=37.20 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 50], 80.00th=[ 66], 90.00th=[ 95], 95.00th=[ 116], | 99.00th=[ 174], 99.50th=[ 279], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 21, max= 415, per=27.03%, avg=133.25, stdev=79.84, samples=84 iops : min= 1, max= 25, avg= 7.50, stdev= 4.98, samples=84 write: IOPS=9, BW=145KiB/s (149kB/s)(6544KiB/45011msec); 0 zone resets clat (msec): min=14, max=291, avg=68.66, stdev=44.07 lat (msec): min=14, max=291, avg=68.66, stdev=44.07 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 43], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 66], | 70.00th=[ 79], 80.00th=[ 97], 90.00th=[ 130], 95.00th=[ 150], | 99.00th=[ 234], 99.50th=[ 249], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 345, per=27.82%, avg=144.41, stdev=75.74, samples=88 iops : min= 1, max= 21, avg= 8.19, stdev= 4.79, samples=88 lat (msec) : 10=0.26%, 20=8.98%, 50=47.14%, 100=30.34%, 250=12.76% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.64%, ctx=1224, 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=180554: Fri Oct 2 09:20:05 2026 read: IOPS=8, BW=138KiB/s (142kB/s)(6256KiB/45204msec) clat (msec): min=8, max=291, avg=47.80, stdev=40.10 lat (msec): min=8, max=291, avg=47.81, stdev=40.10 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 51], 80.00th=[ 63], 90.00th=[ 100], 95.00th=[ 134], | 99.00th=[ 218], 99.50th=[ 241], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 447, per=28.48%, avg=140.39, stdev=95.17, samples=88 iops : min= 1, max= 27, avg= 7.94, stdev= 5.99, samples=88 write: IOPS=8, BW=133KiB/s (137kB/s)(6032KiB/45204msec); 0 zone resets clat (msec): min=16, max=274, avg=69.87, stdev=47.90 lat (msec): min=16, max=274, avg=69.88, stdev=47.90 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 80], 80.00th=[ 101], 90.00th=[ 140], 95.00th=[ 176], | 99.00th=[ 239], 99.50th=[ 243], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 287, per=25.83%, avg=134.07, stdev=66.55, samples=88 iops : min= 1, max= 17, avg= 7.55, stdev= 4.19, samples=88 lat (msec) : 10=0.26%, 20=10.94%, 50=46.48%, 100=27.60%, 250=14.45% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=1.70%, ctx=1277, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180555: Fri Oct 2 09:20:05 2026 read: IOPS=8, BW=136KiB/s (139kB/s)(6032KiB/44392msec) clat (msec): min=8, max=216, avg=45.52, stdev=35.42 lat (msec): min=8, max=216, avg=45.53, stdev=35.42 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 50], 80.00th=[ 62], 90.00th=[ 92], 95.00th=[ 122], | 99.00th=[ 186], 99.50th=[ 205], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 31, max= 382, per=27.97%, avg=137.88, stdev=82.45, samples=85 iops : min= 1, max= 23, avg= 7.79, stdev= 5.18, samples=85 write: IOPS=8, BW=141KiB/s (144kB/s)(6256KiB/44392msec); 0 zone resets clat (msec): min=16, max=295, avg=69.12, stdev=45.63 lat (msec): min=16, max=295, avg=69.12, stdev=45.63 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 64], | 70.00th=[ 79], 80.00th=[ 94], 90.00th=[ 138], 95.00th=[ 169], | 99.00th=[ 211], 99.50th=[ 266], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 415, per=27.04%, avg=140.33, stdev=73.22, samples=87 iops : min= 1, max= 25, avg= 7.94, stdev= 4.62, samples=87 lat (msec) : 10=0.52%, 20=10.03%, 50=47.01%, 100=29.30%, 250=12.89% lat (msec) : 500=0.26% cpu : usr=0.07%, sys=1.64%, ctx=1220, 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=494KiB/s (506kB/s), 113KiB/s-138KiB/s (116kB/s-142kB/s), io=21.8MiB (22.9MB), run=37823-45204msec WRITE: bw=519KiB/s (532kB/s), 123KiB/s-145KiB/s (126kB/s-149kB/s), io=22.9MiB (24.0MB), run=37823-45204msec 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=180575: Fri Oct 2 09:20:22 2026 read: IOPS=2, BW=2621KiB/s (2684kB/s)(7168KiB/2735msec) clat (usec): min=739, max=314184, avg=201433.45, stdev=106160.97 lat (usec): min=740, max=314185, avg=201434.73, stdev=106161.30 clat percentiles (usec): | 1.00th=[ 742], 5.00th=[ 742], 10.00th=[ 742], 20.00th=[133694], | 30.00th=[185598], 40.00th=[185598], 50.00th=[254804], 60.00th=[258999], | 70.00th=[258999], 80.00th=[261096], 90.00th=[312476], 95.00th=[312476], | 99.00th=[312476], 99.50th=[312476], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 2000, max= 4031, per=62.97%, avg=2765.75, stdev=959.07, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1872KiB/s (1917kB/s)(5120KiB/2735msec); 0 zone resets clat (msec): min=147, max=330, avg=245.05, stdev=74.00 lat (msec): min=147, max=330, avg=245.15, stdev=74.00 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 236], 60.00th=[ 236], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 2000, max= 4063, per=43.95%, avg=2702.00, stdev=1178.86, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=50.00% cpu : usr=0.00%, sys=15.29%, ctx=170, 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=180576: Fri Oct 2 09:20:22 2026 read: IOPS=0, BW=439KiB/s (450kB/s)(2048KiB/4663msec) clat (usec): min=568, max=413598, avg=207083.55, stdev=292056.81 lat (usec): min=569, max=413601, avg=207085.60, stdev=292057.82 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[ 570], 50.00th=[ 570], 60.00th=[413139], | 70.00th=[413139], 80.00th=[413139], 90.00th=[413139], 95.00th=[413139], | 99.00th=[413139], 99.50th=[413139], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 2000, max= 2003, per=45.57%, avg=2001.50, stdev= 2.12, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2196KiB/s (2249kB/s)(10.0MiB/4663msec); 0 zone resets clat (msec): min=123, max=962, avg=387.73, stdev=242.21 lat (msec): min=123, max=962, avg=387.93, stdev=242.15 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 239], | 30.00th=[ 245], 40.00th=[ 264], 50.00th=[ 271], 60.00th=[ 338], | 70.00th=[ 376], 80.00th=[ 464], 90.00th=[ 600], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 2007, max= 4071, per=52.57%, avg=3231.80, stdev=1101.96, samples=5 iops : min= 1, max= 3, avg= 2.20, stdev= 1.10, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=12.01%, ctx=167, 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=180577: Fri Oct 2 09:20:22 2026 read: IOPS=1, BW=1610KiB/s (1648kB/s)(6144KiB/3817msec) clat (usec): min=1274, max=280719, avg=165294.13, stdev=108455.61 lat (usec): min=1275, max=280721, avg=165295.69, stdev=108455.74 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1270], 10.00th=[ 1270], 20.00th=[ 74974], | 30.00th=[ 74974], 40.00th=[166724], 50.00th=[166724], 60.00th=[210764], | 70.00th=[256902], 80.00th=[256902], 90.00th=[278922], 95.00th=[278922], | 99.00th=[278922], 99.50th=[278922], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 1992, max= 4096, per=77.04%, avg=3383.67, stdev=1205.33, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1610KiB/s (1648kB/s)(6144KiB/3817msec); 0 zone resets clat (msec): min=124, max=887, avg=453.19, stdev=286.31 lat (msec): min=124, max=887, avg=453.28, stdev=286.31 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 409], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 1861, max= 4096, per=38.83%, avg=2387.40, stdev=957.02, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 lat (msec) : 2=8.33%, 100=8.33%, 250=25.00%, 500=41.67%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.05%, sys=12.05%, ctx=157, 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=180578: Fri Oct 2 09:20:22 2026 read: IOPS=1, BW=1338KiB/s (1370kB/s)(5120KiB/3827msec) clat (usec): min=558, max=274258, avg=167121.52, stdev=105329.73 lat (usec): min=559, max=274259, avg=167122.79, stdev=105329.66 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 562], | 30.00th=[158335], 40.00th=[158335], 50.00th=[164627], 60.00th=[164627], | 70.00th=[238027], 80.00th=[238027], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 2003, max= 6131, per=92.60%, avg=4067.00, stdev=2918.94, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1873KiB/s (1918kB/s)(7168KiB/3827msec); 0 zone resets clat (msec): min=205, max=629, avg=414.55, stdev=173.52 lat (msec): min=206, max=629, avg=414.79, stdev=173.40 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 251], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 414], 60.00th=[ 527], | 70.00th=[ 527], 80.00th=[ 600], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1456, max= 4063, per=37.60%, avg=2311.40, stdev=1008.50, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=25.00% cpu : usr=0.00%, sys=11.24%, ctx=141, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4392KiB/s (4497kB/s), 439KiB/s-2621KiB/s (450kB/s-2684kB/s), io=20.0MiB (20.0MB), run=2735-4663msec WRITE: bw=6149KiB/s (6296kB/s), 1610KiB/s-2196KiB/s (1648kB/s-2249kB/s), io=28.0MiB (29.4MB), run=2735-4663msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180579: Fri Oct 2 09:20:22 2026 read: IOPS=1, BW=1543KiB/s (1581kB/s)(7168KiB/4644msec) clat (msec): min=68, max=799, avg=248.02, stdev=251.86 lat (msec): min=68, max=799, avg=248.02, stdev=251.86 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 104], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 161], 60.00th=[ 209], | 70.00th=[ 209], 80.00th=[ 268], 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= 1479, max= 4087, per=76.98%, avg=3217.67, stdev=1505.73, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1102KiB/s (1129kB/s)(5120KiB/4644msec); 0 zone resets clat (msec): min=116, max=751, avg=526.15, stdev=248.95 lat (msec): min=116, max=751, avg=526.24, stdev=248.96 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 493], 40.00th=[ 493], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1973, max= 2019, per=34.22%, avg=2002.33, stdev=25.48, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=3.17%, ctx=79, 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=180580: Fri Oct 2 09:20:22 2026 read: IOPS=0, BW=460KiB/s (471kB/s)(2048KiB/4457msec) clat (msec): min=119, max=513, avg=316.47, stdev=277.97 lat (msec): min=119, max=513, avg=316.47, stdev=277.97 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 121], | 30.00th=[ 121], 40.00th=[ 121], 50.00th=[ 121], 60.00th=[ 514], | 70.00th=[ 514], 80.00th=[ 514], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 1969, max= 2023, per=47.75%, avg=1996.00, stdev=38.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2298KiB/s (2353kB/s)(10.0MiB/4457msec); 0 zone resets clat (msec): min=115, max=945, avg=373.70, stdev=270.04 lat (msec): min=115, max=945, avg=374.36, stdev=270.28 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 192], | 30.00th=[ 199], 40.00th=[ 211], 50.00th=[ 253], 60.00th=[ 271], | 70.00th=[ 313], 80.00th=[ 510], 90.00th=[ 726], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 2019, max= 6144, per=55.32%, avg=3237.40, stdev=1821.87, samples=5 iops : min= 1, max= 6, avg= 2.40, stdev= 2.19, samples=5 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=4.29%, ctx=99, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180581: Fri Oct 2 09:20:22 2026 read: IOPS=1, BW=1423KiB/s (1457kB/s)(6144KiB/4319msec) clat (msec): min=78, max=565, avg=296.01, stdev=218.14 lat (msec): min=78, max=565, avg=296.01, stdev=218.14 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 93], | 30.00th=[ 93], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 368], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1973, max= 4039, per=60.14%, avg=2513.75, stdev=1017.24, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1423KiB/s (1457kB/s)(6144KiB/4319msec); 0 zone resets clat (msec): min=179, max=824, avg=369.22, stdev=229.01 lat (msec): min=179, max=824, avg=369.32, stdev=229.00 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 300], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1467, max= 4000, per=39.39%, avg=2305.20, stdev=977.60, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=16.67%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.05%, sys=4.84%, ctx=97, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180582: Fri Oct 2 09:20:22 2026 read: IOPS=1, BW=1045KiB/s (1070kB/s)(5120KiB/4899msec) clat (msec): min=65, max=462, avg=237.10, stdev=170.84 lat (msec): min=65, max=462, avg=237.11, stdev=170.84 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 66], | 30.00th=[ 91], 40.00th=[ 91], 50.00th=[ 211], 60.00th=[ 211], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 1973, max= 4000, per=63.73%, avg=2664.00, stdev=1157.24, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1463KiB/s (1498kB/s)(7168KiB/4899msec); 0 zone resets clat (msec): min=191, max=1044, avg=488.41, stdev=296.44 lat (msec): min=191, max=1044, avg=488.71, stdev=296.33 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 241], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 405], 60.00th=[ 464], | 70.00th=[ 464], 80.00th=[ 701], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 1973, max= 2043, per=34.58%, avg=2023.50, stdev=29.94, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 100=16.67%, 250=25.00%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.86%, ctx=88, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=4180KiB/s (4281kB/s), 460KiB/s-1543KiB/s (471kB/s-1581kB/s), io=20.0MiB (20.0MB), run=4319-4899msec WRITE: bw=5853KiB/s (5993kB/s), 1102KiB/s-2298KiB/s (1129kB/s-2353kB/s), io=28.0MiB (29.4MB), run=4319-4899msec 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=180588: Fri Oct 2 09:20:33 2026 read: IOPS=1, BW=5042KiB/s (5163kB/s)(12.0MiB/2437msec) clat (msec): min=502, max=861, avg=717.15, stdev=189.60 lat (msec): min=502, max=861, avg=717.15, stdev=189.60 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 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= 8047, max= 8078, per=100.00%, avg=8062.50, stdev=21.92, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=3.16%, ctx=42, 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=180591: Fri Oct 2 09:20:33 2026 read: IOPS=0, BW=1622KiB/s (1660kB/s)(4096KiB/2526msec) clat (nsec): min=246567k, max=246567k, avg=246566552.00, stdev= 0.00 lat (nsec): min=246570k, max=246570k, avg=246569527.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 247], | 70.00th=[ 247], 80.00th=[ 247], 90.00th=[ 247], 95.00th=[ 247], | 99.00th=[ 247], 99.50th=[ 247], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 5610, max= 5610, per=86.49%, avg=5610.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3243KiB/s (3321kB/s)(8192KiB/2526msec); 0 zone resets clat (msec): min=1020, max=1169, avg=1094.97, stdev=105.54 lat (msec): min=1021, max=1170, avg=1095.91, stdev=104.81 clat percentiles (msec): | 1.00th=[ 1020], 5.00th=[ 1020], 10.00th=[ 1020], 20.00th=[ 1020], | 30.00th=[ 1020], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1167], | 70.00th=[ 1167], 80.00th=[ 1167], 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= 8110, max= 8110, per=62.52%, avg=8110.00, 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=0.04%, sys=4.67%, ctx=43, 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=180593: Fri Oct 2 09:20:33 2026 write: IOPS=1, BW=6554KiB/s (6711kB/s)(12.0MiB/1875msec); 0 zone resets clat (msec): min=241, max=664, avg=500.54, stdev=226.79 lat (msec): min=242, max=665, avg=500.98, stdev=226.91 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min=16253, max=16253, per=100.00%, avg=16253.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=66.67% cpu : usr=0.00%, sys=6.67%, ctx=65, 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=180594: Fri Oct 2 09:20:33 2026 write: IOPS=1, BW=7416KiB/s (7594kB/s)(12.0MiB/1657msec); 0 zone resets clat (msec): min=288, max=946, avg=511.94, stdev=376.02 lat (msec): min=289, max=946, avg=512.50, stdev=375.96 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 300], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min=11330, max=11330, per=87.34%, avg=11330.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=6.22%, ctx=42, 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=6486KiB/s (6642kB/s), 1622KiB/s-5042KiB/s (1660kB/s-5163kB/s), io=16.0MiB (16.8MB), run=2437-2526msec WRITE: bw=12.7MiB/s (13.3MB/s), 3243KiB/s-7416KiB/s (3321kB/s-7594kB/s), io=32.0MiB (33.6MB), run=1657-2526msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180589: Fri Oct 2 09:20:34 2026 read: IOPS=1, BW=5030KiB/s (5151kB/s)(12.0MiB/2443msec) clat (msec): min=561, max=885, avg=694.79, stdev=169.18 lat (msec): min=561, max=885, avg=694.79, stdev=169.18 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7984, max= 8175, per=100.00%, avg=8079.50, stdev=135.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=14.62%, ctx=215, 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=180592: Fri Oct 2 09:20:34 2026 read: IOPS=0, BW=1437KiB/s (1471kB/s)(4096KiB/2851msec) clat (nsec): min=598052k, max=598052k, avg=598051895.00, stdev= 0.00 lat (nsec): min=598055k, max=598055k, avg=598054705.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] 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=2873KiB/s (2942kB/s)(8192KiB/2851msec); 0 zone resets clat (msec): min=903, max=918, avg=910.90, stdev=11.10 lat (msec): min=903, max=924, avg=913.93, stdev=14.58 clat percentiles (msec): | 1.00th=[ 902], 5.00th=[ 902], 10.00th=[ 902], 20.00th=[ 902], | 30.00th=[ 902], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7984, max= 7984, per=69.47%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=3.12%, ctx=114, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180595: Fri Oct 2 09:20:34 2026 write: IOPS=1, BW=4475KiB/s (4582kB/s)(12.0MiB/2746msec); 0 zone resets clat (msec): min=224, max=1242, avg=809.01, stdev=525.10 lat (msec): min=226, max=1243, avg=810.12, stdev=525.22 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 8047, max= 8175, per=70.57%, avg=8111.00, stdev=90.51, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.86%, ctx=47, 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=180596: Fri Oct 2 09:20:34 2026 write: IOPS=1, BW=6457KiB/s (6612kB/s)(12.0MiB/1903msec); 0 zone resets clat (msec): min=406, max=802, avg=595.73, stdev=198.73 lat (msec): min=414, max=809, avg=600.94, stdev=198.90 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 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= 8047, max= 8175, per=70.57%, avg=8111.00, stdev=90.51, 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=4.31%, ctx=53, 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=5747KiB/s (5885kB/s), 1437KiB/s-5030KiB/s (1471kB/s-5151kB/s), io=16.0MiB (16.8MB), run=2443-2851msec WRITE: bw=11.2MiB/s (11.8MB/s), 2873KiB/s-6457KiB/s (2942kB/s-6612kB/s), io=32.0MiB (33.6MB), run=1903-2851msec