== sanity test 398b: DIO and buffer IO race ============== 06:34:11 (1789641251) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.00264 s, 7.2 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=178992: Thu Sep 17 06:36:31 2026 read: IOPS=12, BW=50.5KiB/s (51.7kB/s)(5992KiB/118574msec) clat (usec): min=38, max=815655, avg=43929.59, stdev=34832.28 lat (usec): min=38, max=815656, avg=43932.03, stdev=34833.81 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 10814], 10.00th=[ 16450], 20.00th=[ 21365], | 30.00th=[ 26346], 40.00th=[ 31589], 50.00th=[ 37487], 60.00th=[ 43779], | 70.00th=[ 52167], 80.00th=[ 62129], 90.00th=[ 79168], 95.00th=[ 93848], | 99.00th=[147850], 99.50th=[185598], 99.90th=[283116], 99.95th=[817890], | 99.99th=[817890] bw ( KiB/s): min= 5, max= 128, per=24.78%, avg=50.06, stdev=19.02, samples=234 iops : min= 1, max= 32, avg=11.87, stdev= 4.78, samples=234 write: IOPS=13, BW=53.1KiB/s (54.4kB/s)(6296KiB/118574msec); 0 zone resets clat (usec): min=984, max=295322, avg=33203.27, stdev=33739.92 lat (usec): min=985, max=295323, avg=33209.10, stdev=33738.37 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1237], 10.00th=[ 1827], 20.00th=[ 4047], | 30.00th=[ 7504], 40.00th=[ 15008], 50.00th=[ 23987], 60.00th=[ 32375], | 70.00th=[ 44303], 80.00th=[ 56886], 90.00th=[ 80217], 95.00th=[100140], | 99.00th=[141558], 99.50th=[158335], 99.90th=[202376], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 151, per=25.29%, avg=53.35, stdev=21.89, samples=231 iops : min= 1, max= 37, avg=12.68, stdev= 5.49, samples=231 lat (usec) : 50=0.33%, 100=1.40%, 250=0.13%, 500=0.07%, 1000=0.07% lat (msec) : 2=5.53%, 4=4.52%, 10=7.81%, 20=11.26%, 50=40.40% lat (msec) : 100=23.99%, 250=4.39%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=5.28%, ctx=6605, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178993: Thu Sep 17 06:36:31 2026 read: IOPS=12, BW=51.4KiB/s (52.6kB/s)(5940KiB/115674msec) clat (usec): min=34, max=362846, avg=41703.35, stdev=27878.16 lat (usec): min=35, max=362847, avg=41704.67, stdev=27878.17 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10814], 10.00th=[ 16057], 20.00th=[ 20841], | 30.00th=[ 26084], 40.00th=[ 30802], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 59507], 90.00th=[ 73925], 95.00th=[ 88605], | 99.00th=[139461], 99.50th=[152044], 99.90th=[291505], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 5, max= 111, per=25.25%, avg=51.01, stdev=19.50, samples=227 iops : min= 1, max= 27, avg=12.11, stdev= 4.90, samples=227 write: IOPS=13, BW=54.9KiB/s (56.2kB/s)(6348KiB/115674msec); 0 zone resets clat (usec): min=1022, max=774794, avg=33575.66, stdev=40698.98 lat (usec): min=1024, max=774796, avg=33578.90, stdev=40698.87 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1205], 10.00th=[ 1565], 20.00th=[ 3654], | 30.00th=[ 6652], 40.00th=[ 13960], 50.00th=[ 22676], 60.00th=[ 30802], | 70.00th=[ 41157], 80.00th=[ 57934], 90.00th=[ 82314], 95.00th=[104334], | 99.00th=[166724], 99.50th=[179307], 99.90th=[320865], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 7, max= 151, per=25.93%, avg=54.70, stdev=22.26, samples=226 iops : min= 1, max= 37, avg=13.03, stdev= 5.60, samples=226 lat (usec) : 50=0.13%, 100=1.66%, 250=0.10% lat (msec) : 2=7.00%, 4=4.17%, 10=7.62%, 20=12.27%, 50=40.43% lat (msec) : 100=22.01%, 250=4.46%, 500=0.13%, 1000=0.03% cpu : usr=0.08%, sys=5.40%, ctx=6573, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178996: Thu Sep 17 06:36:31 2026 read: IOPS=12, BW=50.8KiB/s (51.0kB/s)(6028KiB/118752msec) clat (usec): min=44, max=366832, avg=43509.79, stdev=29929.93 lat (usec): min=45, max=366833, avg=43520.84, stdev=29923.08 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 12518], 10.00th=[ 16909], 20.00th=[ 22152], | 30.00th=[ 26870], 40.00th=[ 32113], 50.00th=[ 37487], 60.00th=[ 43254], | 70.00th=[ 50070], 80.00th=[ 59507], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[156238], 99.50th=[189793], 99.90th=[229639], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 7, max= 110, per=24.96%, avg=50.43, stdev=18.93, samples=233 iops : min= 1, max= 27, avg=11.96, stdev= 4.76, samples=233 write: IOPS=13, BW=52.7KiB/s (53.0kB/s)(6260KiB/118752msec); 0 zone resets clat (usec): min=931, max=815559, avg=33646.43, stdev=39506.78 lat (usec): min=931, max=815560, avg=33649.40, stdev=39506.56 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1205], 10.00th=[ 1663], 20.00th=[ 3752], | 30.00th=[ 6915], 40.00th=[ 14746], 50.00th=[ 24511], 60.00th=[ 32900], | 70.00th=[ 43254], 80.00th=[ 57934], 90.00th=[ 78119], 95.00th=[102237], | 99.00th=[141558], 99.50th=[162530], 99.90th=[295699], 99.95th=[817890], | 99.99th=[817890] bw ( KiB/s): min= 7, max= 128, per=24.81%, avg=52.35, stdev=23.44, samples=233 iops : min= 1, max= 32, avg=12.44, stdev= 5.88, samples=233 lat (usec) : 50=0.10%, 100=1.17%, 250=0.07%, 750=0.07%, 1000=0.16% lat (msec) : 2=6.05%, 4=4.59%, 10=7.42%, 20=10.90%, 50=41.93% lat (msec) : 100=22.82%, 250=4.59%, 500=0.10%, 1000=0.03% cpu : usr=0.09%, sys=5.17%, ctx=6671, 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=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=178998: Thu Sep 17 06:36:31 2026 read: IOPS=12, BW=51.3KiB/s (52.6kB/s)(6052KiB/117909msec) clat (usec): min=35, max=862186, avg=42979.46, stdev=36074.50 lat (usec): min=36, max=862187, avg=42980.83, stdev=36074.53 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 8455], 10.00th=[ 15795], 20.00th=[ 22152], | 30.00th=[ 25822], 40.00th=[ 30802], 50.00th=[ 35914], 60.00th=[ 42206], | 70.00th=[ 51119], 80.00th=[ 60031], 90.00th=[ 76022], 95.00th=[ 93848], | 99.00th=[137364], 99.50th=[164627], 99.90th=[383779], 99.95th=[859833], | 99.99th=[859833] bw ( KiB/s): min= 5, max= 112, per=25.41%, avg=51.33, stdev=19.65, samples=231 iops : min= 1, max= 28, avg=12.19, stdev= 4.96, samples=231 write: IOPS=13, BW=52.9KiB/s (54.2kB/s)(6236KiB/117909msec); 0 zone resets clat (usec): min=988, max=232055, avg=33600.85, stdev=32972.18 lat (usec): min=988, max=232056, avg=33607.82, stdev=32970.90 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1237], 10.00th=[ 1893], 20.00th=[ 3949], | 30.00th=[ 7439], 40.00th=[ 15795], 50.00th=[ 24249], 60.00th=[ 33817], | 70.00th=[ 45876], 80.00th=[ 58983], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[128451], 99.50th=[162530], 99.90th=[206570], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 7, max= 119, per=24.94%, avg=52.62, stdev=20.43, samples=232 iops : min= 1, max= 29, avg=12.52, stdev= 5.10, samples=232 lat (usec) : 50=0.39%, 100=1.56%, 250=0.23%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.44%, 4=4.92%, 10=7.00%, 20=10.71%, 50=40.95% lat (msec) : 100=24.38%, 250=4.17%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=5.26%, ctx=6603, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=202KiB/s (207kB/s), 50.5KiB/s-51.4KiB/s (51.7kB/s-52.6kB/s), io=23.4MiB (24.6MB), run=115674-118752msec WRITE: bw=212KiB/s (217kB/s), 52.7KiB/s-54.9KiB/s (53.0kB/s-56.2kB/s), io=24.6MiB (25.7MB), run=115674-118752msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178991: Thu Sep 17 06:37:19 2026 read: IOPS=8, BW=35.9KiB/s (36.8kB/s)(5992KiB/166870msec) clat (msec): min=5, max=832, avg=43.83, stdev=39.72 lat (msec): min=5, max=832, avg=43.83, stdev=39.72 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 48], 80.00th=[ 62], 90.00th=[ 91], 95.00th=[ 120], | 99.00th=[ 165], 99.50th=[ 192], 99.90th=[ 243], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7, max= 119, per=25.28%, avg=36.15, stdev=21.58, samples=323 iops : min= 1, max= 29, avg= 8.38, stdev= 5.41, samples=323 write: IOPS=9, BW=37.7KiB/s (38.6kB/s)(6296KiB/166870msec); 0 zone resets clat (msec): min=10, max=393, avg=64.02, stdev=43.04 lat (msec): min=10, max=393, avg=64.03, stdev=43.04 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 38], 40.00th=[ 45], 50.00th=[ 52], 60.00th=[ 61], | 70.00th=[ 73], 80.00th=[ 91], 90.00th=[ 120], 95.00th=[ 144], | 99.00th=[ 220], 99.50th=[ 271], 99.90th=[ 388], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 7, max= 103, per=24.93%, avg=37.39, stdev=19.99, samples=328 iops : min= 1, max= 25, avg= 8.69, stdev= 5.02, samples=328 lat (msec) : 10=1.24%, 20=12.01%, 50=46.39%, 100=28.16%, 250=11.82% lat (msec) : 500=0.36%, 1000=0.03% cpu : usr=0.05%, sys=1.80%, ctx=4875, 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=178994: Thu Sep 17 06:37:19 2026 read: IOPS=8, BW=35.6KiB/s (36.4kB/s)(5940KiB/167072msec) clat (msec): min=5, max=826, avg=44.38, stdev=41.76 lat (msec): min=5, max=826, avg=44.38, stdev=41.76 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 63], 90.00th=[ 92], 95.00th=[ 122], | 99.00th=[ 184], 99.50th=[ 218], 99.90th=[ 384], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 119, per=25.26%, avg=36.12, stdev=20.83, samples=320 iops : min= 1, max= 29, avg= 8.37, stdev= 5.21, samples=320 write: IOPS=9, BW=37.0KiB/s (38.9kB/s)(6348KiB/167072msec); 0 zone resets clat (msec): min=12, max=384, avg=63.44, stdev=41.61 lat (msec): min=12, max=384, avg=63.44, stdev=41.61 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 61], | 70.00th=[ 72], 80.00th=[ 89], 90.00th=[ 115], 95.00th=[ 142], | 99.00th=[ 220], 99.50th=[ 266], 99.90th=[ 363], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 104, per=25.24%, avg=37.86, stdev=20.13, samples=326 iops : min= 1, max= 26, avg= 8.81, stdev= 5.05, samples=326 lat (msec) : 10=1.50%, 20=12.08%, 50=45.93%, 100=28.91%, 250=11.17% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.05%, sys=1.83%, ctx=4841, 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=178995: Thu Sep 17 06:37:19 2026 read: IOPS=9, BW=36.5KiB/s (37.3kB/s)(6028KiB/165336msec) clat (msec): min=5, max=293, avg=43.79, stdev=35.06 lat (msec): min=5, max=293, avg=43.79, stdev=35.06 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 48], 80.00th=[ 63], 90.00th=[ 96], 95.00th=[ 120], | 99.00th=[ 163], 99.50th=[ 182], 99.90th=[ 271], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 135, per=25.60%, avg=36.61, stdev=21.64, samples=321 iops : min= 1, max= 33, avg= 8.49, stdev= 5.42, samples=321 write: IOPS=9, BW=37.9KiB/s (38.8kB/s)(6260KiB/165336msec); 0 zone resets clat (msec): min=8, max=884, avg=63.18, stdev=46.28 lat (msec): min=8, max=884, avg=63.19, stdev=46.28 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 59], | 70.00th=[ 72], 80.00th=[ 88], 90.00th=[ 114], 95.00th=[ 140], | 99.00th=[ 232], 99.50th=[ 271], 99.90th=[ 355], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 103, per=25.02%, avg=37.53, stdev=19.94, samples=325 iops : min= 1, max= 25, avg= 8.72, stdev= 5.01, samples=325 lat (msec) : 10=1.46%, 20=12.04%, 50=46.78%, 100=28.16%, 250=11.13% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.05%, sys=1.85%, ctx=4844, 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=178997: Thu Sep 17 06:37:19 2026 read: IOPS=9, BW=36.2KiB/s (37.1kB/s)(6052KiB/167091msec) clat (msec): min=5, max=293, avg=44.99, stdev=37.41 lat (msec): min=5, max=293, avg=44.99, stdev=37.41 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 49], 80.00th=[ 63], 90.00th=[ 92], 95.00th=[ 124], | 99.00th=[ 188], 99.50th=[ 213], 99.90th=[ 292], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 125, per=25.63%, avg=36.66, stdev=21.96, samples=321 iops : min= 1, max= 31, avg= 8.51, stdev= 5.52, samples=321 write: IOPS=9, BW=37.3KiB/s (38.2kB/s)(6236KiB/167091msec); 0 zone resets clat (msec): min=10, max=811, avg=63.19, stdev=46.56 lat (msec): min=10, max=811, avg=63.20, stdev=46.56 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 51], 60.00th=[ 60], | 70.00th=[ 72], 80.00th=[ 88], 90.00th=[ 117], 95.00th=[ 142], | 99.00th=[ 241], 99.50th=[ 266], 99.90th=[ 397], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 103, per=24.80%, avg=37.20, stdev=20.12, samples=326 iops : min= 1, max= 25, avg= 8.64, stdev= 5.04, samples=326 lat (msec) : 10=1.37%, 20=11.10%, 50=47.72%, 100=28.39%, 250=10.97% lat (msec) : 500=0.42%, 1000=0.03% cpu : usr=0.05%, sys=1.91%, ctx=5058, 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=144KiB/s (147kB/s), 35.6KiB/s-36.5KiB/s (36.4kB/s-37.3kB/s), io=23.4MiB (24.6MB), run=165336-167091msec WRITE: bw=150KiB/s (154kB/s), 37.3KiB/s-37.0KiB/s (38.2kB/s-38.9kB/s), io=24.6MiB (25.7MB), run=165336-167091msec 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=179043: Thu Sep 17 06:38:06 2026 read: IOPS=11, BW=178KiB/s (183kB/s)(5920KiB/33194msec) clat (usec): min=41, max=215678, avg=48044.36, stdev=35285.80 lat (usec): min=42, max=215679, avg=48045.87, stdev=35285.97 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 68], 10.00th=[ 10552], 20.00th=[ 23462], | 30.00th=[ 30540], 40.00th=[ 36439], 50.00th=[ 42730], 60.00th=[ 49546], | 70.00th=[ 57410], 80.00th=[ 67634], 90.00th=[ 82314], 95.00th=[109577], | 99.00th=[189793], 99.50th=[210764], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 60, max= 319, per=24.85%, avg=175.69, stdev=64.17, samples=65 iops : min= 3, max= 19, avg=10.25, stdev= 4.01, samples=65 write: IOPS=11, BW=192KiB/s (196kB/s)(6368KiB/33194msec); 0 zone resets clat (usec): min=1569, max=226194, avg=38202.72, stdev=37531.93 lat (usec): min=1571, max=226198, avg=38208.08, stdev=37530.17 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2540], 10.00th=[ 3425], 20.00th=[ 6783], | 30.00th=[ 10814], 40.00th=[ 18744], 50.00th=[ 25560], 60.00th=[ 36439], | 70.00th=[ 47449], 80.00th=[ 67634], 90.00th=[ 92799], 95.00th=[107480], | 99.00th=[166724], 99.50th=[196084], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 31, max= 411, per=25.57%, avg=190.22, stdev=69.43, samples=65 iops : min= 1, max= 25, avg=11.15, stdev= 4.39, samples=65 lat (usec) : 50=0.26%, 100=3.26%, 250=0.52%, 500=0.26% lat (msec) : 2=1.82%, 4=4.43%, 10=8.72%, 20=10.42%, 50=36.59% lat (msec) : 100=27.34%, 250=6.38% cpu : usr=0.08%, sys=5.57%, ctx=1741, 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=179044: Thu Sep 17 06:38:06 2026 read: IOPS=11, BW=180KiB/s (184kB/s)(5744KiB/31946msec) clat (usec): min=48, max=164106, avg=49468.43, stdev=31233.28 lat (usec): min=49, max=164107, avg=49470.05, stdev=31233.34 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 82], 10.00th=[ 18482], 20.00th=[ 25560], | 30.00th=[ 32900], 40.00th=[ 37487], 50.00th=[ 43254], 60.00th=[ 49546], | 70.00th=[ 58983], 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[115868], | 99.00th=[147850], 99.50th=[156238], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 64, max= 379, per=25.35%, avg=179.19, stdev=65.98, samples=63 iops : min= 4, max= 23, avg=10.48, stdev= 4.08, samples=63 write: IOPS=12, BW=205KiB/s (210kB/s)(6544KiB/31946msec); 0 zone resets clat (usec): min=1423, max=198061, avg=34066.40, stdev=34818.81 lat (usec): min=1425, max=198063, avg=34088.27, stdev=34887.03 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1893], 10.00th=[ 3458], 20.00th=[ 5735], | 30.00th=[ 10028], 40.00th=[ 15664], 50.00th=[ 23200], 60.00th=[ 31589], | 70.00th=[ 41157], 80.00th=[ 56361], 90.00th=[ 84411], 95.00th=[110625], | 99.00th=[154141], 99.50th=[177210], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 504, per=27.39%, avg=203.78, stdev=94.12, samples=63 iops : min= 1, max= 31, avg=12.03, stdev= 5.98, samples=63 lat (usec) : 50=0.13%, 100=2.47%, 250=0.13% lat (msec) : 2=2.86%, 4=3.52%, 10=9.38%, 20=11.33%, 50=39.32% lat (msec) : 100=23.83%, 250=7.03% cpu : usr=0.07%, sys=5.82%, ctx=1724, 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=179045: Thu Sep 17 06:38:06 2026 read: IOPS=11, BW=185KiB/s (189kB/s)(6256KiB/33832msec) clat (usec): min=54, max=224841, avg=49384.05, stdev=32575.36 lat (usec): min=56, max=224842, avg=49385.35, stdev=32575.35 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 70], 10.00th=[ 15533], 20.00th=[ 26084], | 30.00th=[ 32375], 40.00th=[ 38011], 50.00th=[ 42730], 60.00th=[ 50070], | 70.00th=[ 59507], 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[104334], | 99.00th=[158335], 99.50th=[210764], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 62, max= 316, per=26.11%, avg=184.62, stdev=55.77, samples=66 iops : min= 3, max= 19, avg=10.82, stdev= 3.52, samples=66 write: IOPS=11, BW=178KiB/s (183kB/s)(6032KiB/33832msec); 0 zone resets clat (usec): min=1534, max=261162, avg=38423.52, stdev=38819.75 lat (usec): min=1536, max=261165, avg=38426.40, stdev=38819.73 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1958], 10.00th=[ 2999], 20.00th=[ 6849], | 30.00th=[ 10552], 40.00th=[ 16909], 50.00th=[ 26346], 60.00th=[ 36439], | 70.00th=[ 47973], 80.00th=[ 67634], 90.00th=[ 90702], 95.00th=[106431], | 99.00th=[177210], 99.50th=[212861], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 63, max= 351, per=23.59%, avg=175.55, stdev=74.58, samples=66 iops : min= 3, max= 21, avg=10.23, stdev= 4.69, samples=66 lat (usec) : 100=3.39%, 250=0.52% lat (msec) : 2=2.73%, 4=3.26%, 10=8.46%, 20=8.85%, 50=38.28% lat (msec) : 100=28.13%, 250=6.25%, 500=0.13% cpu : usr=0.08%, sys=5.34%, ctx=1717, 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=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=179046: Thu Sep 17 06:38:06 2026 read: IOPS=11, BW=191KiB/s (196kB/s)(6032KiB/31551msec) clat (usec): min=39, max=215352, avg=47826.03, stdev=32017.35 lat (usec): min=39, max=215353, avg=47827.40, stdev=32017.32 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 67], 10.00th=[ 9372], 20.00th=[ 25035], | 30.00th=[ 31851], 40.00th=[ 38011], 50.00th=[ 44303], 60.00th=[ 50070], | 70.00th=[ 58459], 80.00th=[ 70779], 90.00th=[ 83362], 95.00th=[100140], | 99.00th=[179307], 99.50th=[210764], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 32, max= 349, per=26.92%, avg=190.32, stdev=65.46, samples=62 iops : min= 2, max= 21, avg=11.18, stdev= 4.08, samples=62 write: IOPS=12, BW=198KiB/s (203kB/s)(6256KiB/31551msec); 0 zone resets clat (usec): min=1320, max=167563, avg=34113.22, stdev=34020.75 lat (usec): min=1324, max=167564, avg=34115.42, stdev=34020.79 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1811], 10.00th=[ 2737], 20.00th=[ 5538], | 30.00th=[ 9110], 40.00th=[ 14484], 50.00th=[ 22938], 60.00th=[ 32900], | 70.00th=[ 43779], 80.00th=[ 60031], 90.00th=[ 82314], 95.00th=[104334], | 99.00th=[147850], 99.50th=[166724], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 63, max= 388, per=26.74%, avg=198.92, stdev=68.63, samples=62 iops : min= 3, max= 24, avg=11.73, stdev= 4.29, samples=62 lat (usec) : 50=0.26%, 100=3.91%, 250=0.26%, 750=0.13% lat (msec) : 2=3.91%, 4=3.91%, 10=9.24%, 20=9.11%, 50=36.72% lat (msec) : 100=27.08%, 250=5.47% cpu : usr=0.07%, sys=5.78%, ctx=1591, 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=708KiB/s (725kB/s), 178KiB/s-191KiB/s (183kB/s-196kB/s), io=23.4MiB (24.5MB), run=31551-33832msec WRITE: bw=745KiB/s (763kB/s), 178KiB/s-205KiB/s (183kB/s-210kB/s), io=24.6MiB (25.8MB), run=31551-33832msec fio: pid=179051, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=179049: Thu Sep 17 06:38:18 2026 read: IOPS=8, BW=131KiB/s (134kB/s)(5920KiB/45310msec) clat (msec): min=8, max=245, avg=46.80, stdev=34.83 lat (msec): min=8, max=245, avg=46.82, stdev=34.84 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 47], 80.00th=[ 61], 90.00th=[ 101], 95.00th=[ 125], | 99.00th=[ 171], 99.50th=[ 176], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 31, max= 472, per=27.43%, avg=133.33, stdev=82.00, samples=86 iops : min= 1, max= 29, avg= 7.53, stdev= 5.23, samples=86 write: IOPS=8, BW=141KiB/s (144kB/s)(6368KiB/45310msec); 0 zone resets clat (msec): min=14, max=374, avg=70.15, stdev=52.18 lat (msec): min=14, max=374, avg=70.15, stdev=52.18 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 83], 80.00th=[ 105], 90.00th=[ 138], 95.00th=[ 167], | 99.00th=[ 275], 99.50th=[ 334], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 31, max= 473, per=27.04%, avg=139.51, stdev=78.56, samples=89 iops : min= 1, max= 29, avg= 7.93, stdev= 5.00, samples=89 lat (msec) : 10=0.78%, 20=8.33%, 50=50.78%, 100=24.48%, 250=14.97% lat (msec) : 500=0.65% cpu : usr=0.06%, sys=1.90%, ctx=1374, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179050: Thu Sep 17 06:38:18 2026 read: IOPS=7, BW=127KiB/s (130kB/s)(5744KiB/45149msec) clat (msec): min=7, max=231, avg=48.01, stdev=35.37 lat (msec): min=7, max=231, avg=48.01, stdev=35.37 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 52], 80.00th=[ 65], 90.00th=[ 100], 95.00th=[ 134], | 99.00th=[ 169], 99.50th=[ 188], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 31, max= 473, per=27.42%, avg=133.28, stdev=85.47, samples=85 iops : min= 1, max= 29, avg= 7.55, stdev= 5.43, samples=85 write: IOPS=9, BW=145KiB/s (148kB/s)(6544KiB/45149msec); 0 zone resets clat (msec): min=13, max=369, avg=68.05, stdev=50.07 lat (msec): min=13, max=369, avg=68.07, stdev=50.08 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 44], 50.00th=[ 51], 60.00th=[ 62], | 70.00th=[ 77], 80.00th=[ 102], 90.00th=[ 136], 95.00th=[ 165], | 99.00th=[ 243], 99.50th=[ 296], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 31, max= 413, per=27.96%, avg=144.28, stdev=82.94, samples=89 iops : min= 1, max= 25, avg= 8.22, stdev= 5.29, samples=89 lat (msec) : 10=0.39%, 20=9.64%, 50=47.92%, 100=26.69%, 250=14.84% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.84%, ctx=1313, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=179051: Thu Sep 17 06:38:18 2026 read: IOPS=7, BW=118KiB/s (121kB/s)(4336KiB/36808msec) clat (msec): min=10, max=203, avg=53.75, stdev=37.46 lat (msec): min=10, max=203, avg=53.75, stdev=37.46 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 63], 80.00th=[ 80], 90.00th=[ 104], 95.00th=[ 136], | 99.00th=[ 190], 99.50th=[ 192], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 31, max= 349, per=24.56%, avg=119.39, stdev=66.66, samples=70 iops : min= 1, max= 21, avg= 6.63, stdev= 4.17, samples=70 write: IOPS=7, BW=115KiB/s (118kB/s)(4240KiB/36808msec); 0 zone resets clat (msec): min=12, max=330, avg=83.60, stdev=52.19 lat (msec): min=12, max=330, avg=83.60, stdev=52.19 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 26], 10.00th=[ 33], 20.00th=[ 42], | 30.00th=[ 51], 40.00th=[ 61], 50.00th=[ 72], 60.00th=[ 82], | 70.00th=[ 93], 80.00th=[ 122], 90.00th=[ 153], 95.00th=[ 178], | 99.00th=[ 266], 99.50th=[ 300], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 348, per=22.08%, avg=113.94, stdev=50.60, samples=72 iops : min= 1, max= 21, avg= 6.29, stdev= 3.19, samples=72 lat (msec) : 20=7.08%, 50=37.62%, 100=35.20%, 250=19.18%, 500=0.74% cpu : usr=0.04%, sys=1.57%, ctx=780, 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=272,265,0,0 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=179052: Thu Sep 17 06:38:18 2026 read: IOPS=8, BW=136KiB/s (139kB/s)(6032KiB/44372msec) clat (msec): min=6, max=244, avg=50.10, stdev=36.55 lat (msec): min=6, max=244, avg=50.10, stdev=36.55 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 58], 80.00th=[ 71], 90.00th=[ 107], 95.00th=[ 127], | 99.00th=[ 176], 99.50th=[ 197], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 31, max= 413, per=28.36%, avg=137.84, stdev=86.14, samples=85 iops : min= 1, max= 25, avg= 7.80, stdev= 5.44, samples=85 write: IOPS=8, BW=141KiB/s (144kB/s)(6256KiB/44372msec); 0 zone resets clat (msec): min=11, max=371, avg=65.05, stdev=46.51 lat (msec): min=11, max=371, avg=65.05, stdev=46.51 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 22], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 53], 60.00th=[ 62], | 70.00th=[ 73], 80.00th=[ 92], 90.00th=[ 123], 95.00th=[ 140], | 99.00th=[ 275], 99.50th=[ 288], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 31, max= 380, per=27.25%, avg=140.61, stdev=78.26, samples=87 iops : min= 1, max= 23, avg= 7.99, stdev= 4.96, samples=87 lat (msec) : 10=0.39%, 20=9.77%, 50=45.70%, 100=30.08%, 250=13.41% lat (msec) : 500=0.65% cpu : usr=0.06%, sys=1.89%, ctx=1318, 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=486KiB/s (498kB/s), 118KiB/s-136KiB/s (121kB/s-139kB/s), io=21.5MiB (22.6MB), run=36808-45310msec WRITE: bw=517KiB/s (529kB/s), 115KiB/s-145KiB/s (118kB/s-148kB/s), io=22.9MiB (23.0MB), run=36808-45310msec 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=179064: Thu Sep 17 06:38:35 2026 read: IOPS=2, BW=2116KiB/s (2166kB/s)(7168KiB/3388msec) clat (msec): min=9, max=322, avg=202.88, stdev=98.62 lat (msec): min=9, max=322, avg=202.88, stdev=98.62 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 10], 10.00th=[ 10], 20.00th=[ 167], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 239], 60.00th=[ 239], | 70.00th=[ 239], 80.00th=[ 257], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 1580, max= 4096, per=78.42%, avg=2348.60, stdev=995.63, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 write: IOPS=1, BW=1511KiB/s (1547kB/s)(5120KiB/3388msec); 0 zone resets clat (msec): min=213, max=481, avg=347.55, stdev=96.02 lat (msec): min=213, max=481, avg=347.70, stdev=96.05 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 1992, max= 4055, per=60.40%, avg=2532.50, stdev=1015.28, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 10=8.33%, 250=41.67%, 500=50.00% cpu : usr=0.00%, sys=17.74%, ctx=221, 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=179065: Thu Sep 17 06:38:35 2026 read: IOPS=0, BW=300KiB/s (307kB/s)(2048KiB/6838msec) clat (msec): min=201, max=220, avg=210.97, stdev=13.06 lat (msec): min=201, max=220, avg=210.97, stdev=13.06 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 222], | 70.00th=[ 222], 80.00th=[ 222], 90.00th=[ 222], 95.00th=[ 222], | 99.00th=[ 222], 99.50th=[ 222], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 1646, max= 1965, per=60.28%, avg=1805.50, stdev=225.57, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1498KiB/s (1533kB/s)(10.0MiB/6838msec); 0 zone resets clat (msec): min=94, max=2619, avg=623.02, stdev=751.95 lat (msec): min=94, max=2619, avg=623.28, stdev=751.90 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 161], | 30.00th=[ 213], 40.00th=[ 239], 50.00th=[ 347], 60.00th=[ 384], | 70.00th=[ 443], 80.00th=[ 827], 90.00th=[ 911], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 1992, max= 4096, per=72.84%, avg=3054.17, stdev=1135.17, samples=6 iops : min= 1, max= 4, avg= 2.33, stdev= 1.51, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 1000=16.67%, >=2000=8.33% cpu : usr=0.01%, sys=10.56%, ctx=137, 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=179067: Thu Sep 17 06:38:35 2026 read: IOPS=1, BW=1681KiB/s (1721kB/s)(6144KiB/3655msec) clat (usec): min=539, max=322317, avg=100072.59, stdev=136181.53 lat (usec): min=540, max=322317, avg=100073.66, stdev=136181.18 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 63701], | 70.00th=[210764], 80.00th=[210764], 90.00th=[320865], 95.00th=[320865], | 99.00th=[320865], 99.50th=[320865], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 2035, max= 4055, per=100.00%, avg=3358.00, stdev=1146.30, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1681KiB/s (1721kB/s)(6144KiB/3655msec); 0 zone resets clat (msec): min=262, max=1004, avg=495.78, stdev=261.00 lat (msec): min=262, max=1005, avg=495.94, stdev=260.94 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 435], 50.00th=[ 435], 60.00th=[ 451], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 1673, max= 2048, per=46.63%, avg=1955.00, stdev=159.00, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 750=16.67% lat (msec) : 2=8.33%, 100=8.33%, 250=8.33%, 500=50.00%, 2000=8.33% cpu : usr=0.00%, sys=14.29%, ctx=149, 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=179068: Thu Sep 17 06:38:35 2026 read: IOPS=0, BW=785KiB/s (804kB/s)(5120KiB/6522msec) clat (usec): min=1577, max=2301.9k, avg=563529.85, stdev=974695.63 lat (usec): min=1578, max=2301.9k, avg=563531.06, stdev=974695.65 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1582], 10.00th=[ 1582], | 20.00th=[ 1582], 30.00th=[ 149947], 40.00th=[ 149947], | 50.00th=[ 173016], 60.00th=[ 173016], 70.00th=[ 191890], | 80.00th=[ 191890], 90.00th=[2298479], 95.00th=[2298479], | 99.00th=[2298479], 99.50th=[2298479], 99.90th=[2298479], | 99.95th=[2298479], 99.99th=[2298479] bw ( KiB/s): min= 2039, max= 3930, per=89.13%, avg=2669.33, stdev=1091.77, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1099KiB/s (1125kB/s)(7168KiB/6522msec); 0 zone resets clat (msec): min=104, max=1166, avg=503.20, stdev=384.61 lat (msec): min=105, max=1166, avg=503.36, stdev=384.62 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 184], | 30.00th=[ 209], 40.00th=[ 209], 50.00th=[ 422], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 735], 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= 1965, max= 4079, per=57.77%, avg=2422.20, stdev=926.73, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 2=8.33%, 250=50.00%, 500=8.33%, 750=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=10.78%, ctx=638, 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=2995KiB/s (3067kB/s), 300KiB/s-2116KiB/s (307kB/s-2166kB/s), io=20.0MiB (20.0MB), run=3388-6838msec WRITE: bw=4193KiB/s (4294kB/s), 1099KiB/s-1681KiB/s (1125kB/s-1721kB/s), io=28.0MiB (29.4MB), run=3388-6838msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179066: Thu Sep 17 06:38:35 2026 read: IOPS=1, BW=1221KiB/s (1250kB/s)(7168KiB/5873msec) clat (msec): min=82, max=2115, avg=522.30, stdev=720.11 lat (msec): min=82, max=2115, avg=522.30, stdev=720.11 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 97], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 321], 60.00th=[ 347], | 70.00th=[ 347], 80.00th=[ 531], 90.00th=[ 2123], 95.00th=[ 2123], | 99.00th=[ 2123], 99.50th=[ 2123], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 1633, max= 3631, per=80.29%, avg=2277.80, stdev=776.89, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=872KiB/s (893kB/s)(5120KiB/5873msec); 0 zone resets clat (msec): min=83, max=585, avg=411.53, stdev=216.05 lat (msec): min=83, max=585, avg=411.65, stdev=216.04 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 84], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 535], 60.00th=[ 535], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1774, max= 4096, per=66.41%, avg=2637.67, stdev=1270.10, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 100=25.00%, 250=8.33%, 500=25.00%, 750=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.52%, ctx=93, 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=179069: Thu Sep 17 06:38:35 2026 read: IOPS=0, BW=284KiB/s (291kB/s)(2048KiB/7217msec) clat (msec): min=112, max=768, avg=440.43, stdev=464.18 lat (msec): min=112, max=768, avg=440.43, stdev=464.18 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 113], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1508, max= 2048, per=62.67%, avg=1778.00, stdev=381.84, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1419KiB/s (1453kB/s)(10.0MiB/7217msec); 0 zone resets clat (msec): min=57, max=2824, avg=630.83, stdev=809.65 lat (msec): min=57, max=2824, avg=630.96, stdev=809.65 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 142], | 30.00th=[ 271], 40.00th=[ 288], 50.00th=[ 317], 60.00th=[ 376], | 70.00th=[ 435], 80.00th=[ 726], 90.00th=[ 877], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 2011, max= 4087, per=66.51%, avg=2641.67, stdev=953.97, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 100=8.33%, 250=16.67%, 500=41.67%, 750=8.33%, 1000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.41%, ctx=115, 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=179070: Thu Sep 17 06:38:35 2026 read: IOPS=0, BW=856KiB/s (877kB/s)(6144KiB/7177msec) clat (msec): min=160, max=560, avg=264.39, stdev=156.38 lat (msec): min=160, max=560, avg=264.39, stdev=156.38 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 184], 50.00th=[ 184], 60.00th=[ 201], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1774, max= 2043, per=69.32%, avg=1966.75, stdev=129.29, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=0, BW=856KiB/s (877kB/s)(6144KiB/7177msec); 0 zone resets clat (msec): min=122, max=2709, avg=915.40, stdev=976.83 lat (msec): min=122, max=2709, avg=915.88, stdev=976.66 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 550], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 2702], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 1570, max= 2043, per=47.74%, avg=1896.40, stdev=205.72, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=50.00%, 500=8.33%, 750=25.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.57%, ctx=127, 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=179071: Thu Sep 17 06:38:35 2026 read: IOPS=0, BW=722KiB/s (740kB/s)(5120KiB/7087msec) clat (msec): min=92, max=2865, avg=806.73, stdev=1172.52 lat (msec): min=92, max=2865, avg=806.73, stdev=1172.52 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 268], 60.00th=[ 268], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 1774, max= 4087, per=92.93%, avg=2636.33, stdev=1263.76, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=0, BW=1011KiB/s (1036kB/s)(7168KiB/7087msec); 0 zone resets clat (msec): min=89, max=910, avg=422.11, stdev=308.69 lat (msec): min=89, max=910, avg=422.21, stdev=308.67 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 108], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 397], 60.00th=[ 422], | 70.00th=[ 422], 80.00th=[ 743], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1597, max= 4087, per=61.29%, avg=2434.50, stdev=1120.24, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=16.67%, 500=33.33%, 750=16.67%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.54%, ctx=77, 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=2838KiB/s (2906kB/s), 284KiB/s-1221KiB/s (291kB/s-1250kB/s), io=20.0MiB (20.0MB), run=5873-7217msec WRITE: bw=3973KiB/s (4068kB/s), 856KiB/s-1419KiB/s (877kB/s-1453kB/s), io=28.0MiB (29.4MB), run=5873-7217msec 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=179080: Thu Sep 17 06:38:51 2026 read: IOPS=1, BW=7933KiB/s (8123kB/s)(12.0MiB/1549msec) clat (msec): min=355, max=584, avg=492.42, stdev=120.69 lat (msec): min=355, max=584, avg=492.42, stdev=120.69 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 535], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 6350, max= 6350, per=100.00%, avg=6350.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=23.32%, ctx=423, 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=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=179081: Thu Sep 17 06:38:51 2026 read: IOPS=0, BW=928KiB/s (951kB/s)(4096KiB/4412msec) clat (nsec): min=2300.4M, max=2300.4M, avg=2300408503.00, stdev= 0.00 lat (nsec): min=2300.4M, max=2300.4M, avg=2300409687.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2299], 5.00th=[ 2299], 10.00th=[ 2299], 20.00th=[ 2299], | 30.00th=[ 2299], 40.00th=[ 2299], 50.00th=[ 2299], 60.00th=[ 2299], | 70.00th=[ 2299], 80.00th=[ 2299], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] 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=1857KiB/s (1901kB/s)(8192KiB/4412msec); 0 zone resets clat (msec): min=930, max=1082, avg=1006.40, stdev=107.99 lat (msec): min=931, max=1083, avg=1007.64, stdev=107.48 clat percentiles (msec): | 1.00th=[ 927], 5.00th=[ 927], 10.00th=[ 927], 20.00th=[ 927], | 30.00th=[ 927], 40.00th=[ 927], 50.00th=[ 927], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=4.99%, ctx=472, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179083: Thu Sep 17 06:38:51 2026 write: IOPS=0, BW=2553KiB/s (2614kB/s)(12.0MiB/4813msec); 0 zone resets clat (msec): min=240, max=3448, avg=1551.48, stdev=1682.34 lat (msec): min=241, max=3448, avg=1551.83, stdev=1682.25 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 3440], 80.00th=[ 3440], 90.00th=[ 3440], 95.00th=[ 3440], | 99.00th=[ 3440], 99.50th=[ 3440], 99.90th=[ 3440], 99.95th=[ 3440], | 99.99th=[ 3440] bw ( KiB/s): min= 8031, max= 8159, per=100.00%, avg=8095.00, 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=2.66%, ctx=57, 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% rand-rw: (groupid=0, jobs=1): err= 0: pid=179079: Thu Sep 17 06:38:51 2026 read: IOPS=0, BW=3010KiB/s (3083kB/s)(12.0MiB/4082msec) clat (msec): min=390, max=2769, avg=1283.47, stdev=1295.32 lat (msec): min=390, max=2769, avg=1283.47, stdev=1295.32 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 2769], 80.00th=[ 2769], 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= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.87%, ctx=77, 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=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=179082: Thu Sep 17 06:38:51 2026 read: IOPS=0, BW=853KiB/s (874kB/s)(4096KiB/4800msec) clat (nsec): min=2454.4M, max=2454.4M, avg=2454414818.00, stdev= 0.00 lat (nsec): min=2454.4M, max=2454.4M, avg=2454417357.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2467], 5.00th=[ 2467], 10.00th=[ 2467], 20.00th=[ 2467], | 30.00th=[ 2467], 40.00th=[ 2467], 50.00th=[ 2467], 60.00th=[ 2467], | 70.00th=[ 2467], 80.00th=[ 2467], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1707KiB/s (1748kB/s)(8192KiB/4800msec); 0 zone resets clat (msec): min=1005, max=1256, avg=1130.74, stdev=177.29 lat (msec): min=1005, max=1256, avg=1131.33, stdev=177.47 clat percentiles (msec): | 1.00th=[ 1003], 5.00th=[ 1003], 10.00th=[ 1003], 20.00th=[ 1003], | 30.00th=[ 1003], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1250], | 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= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.02%, sys=1.92%, ctx=42, 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=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=179085: Thu Sep 17 06:38:51 2026 write: IOPS=0, BW=2848KiB/s (2917kB/s)(12.0MiB/4314msec); 0 zone resets clat (msec): min=266, max=2928, avg=1364.89, stdev=1390.84 lat (msec): min=267, max=2929, avg=1365.49, stdev=1390.77 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 2937], 80.00th=[ 2937], 90.00th=[ 2937], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, 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 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=179084: Thu Sep 17 06:38:51 2026 write: IOPS=0, BW=3254KiB/s (3332kB/s)(12.0MiB/3776msec); 0 zone resets clat (msec): min=324, max=2720, avg=1207.07, stdev=1316.56 lat (msec): min=325, max=2721, avg=1207.64, stdev=1316.92 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 2735], 80.00th=[ 2735], 90.00th=[ 2735], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 8031, max= 8110, per=100.00%, avg=8070.50, stdev=55.86, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.77%, ctx=73, 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=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=3714KiB/s (3803kB/s), 928KiB/s-7933KiB/s (951kB/s-8123kB/s), io=16.0MiB (16.8MB), run=1549-4412msec WRITE: bw=6808KiB/s (6972kB/s), 1857KiB/s-3254KiB/s (1901kB/s-3332kB/s), io=32.0MiB (33.6MB), run=3776-4813msec : usr=0.00%, sys=2.90%, ctx=65, 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=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=179086: Thu Sep 17 06:38:51 2026 write: IOPS=0, BW=3004KiB/s (3077kB/s)(12.0MiB/4090msec); 0 zone resets clat (msec): min=262, max=2969, avg=1311.18, stdev=1452.80 lat (msec): min=263, max=2969, avg=1311.61, stdev=1452.76 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 2970], 80.00th=[ 2970], 90.00th=[ 2970], 95.00th=[ 2970], | 99.00th=[ 2970], 99.50th=[ 2970], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.98%, ctx=38, 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=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=3413KiB/s (3495kB/s), 853KiB/s-3010KiB/s (874kB/s-3083kB/s), io=16.0MiB (16.8MB), run=4082-4800msec WRITE: bw=6827KiB/s (6991kB/s), 1707KiB/s-3004KiB/s (1748kB/s-3077kB/s), io=32.0MiB (33.6MB), run=4090-4800msec