== sanity test 398b: DIO and buffer IO race ============== 18:01:55 (1788818515) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.80965 s, 6.4 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=179903: Mon Sep 7 18:04:23 2026 read: IOPS=12, BW=48.3KiB/s (49.5kB/s)(5992KiB/124008msec) clat (usec): min=30, max=416220, avg=44833.22, stdev=32527.82 lat (usec): min=30, max=416221, avg=44836.03, stdev=32527.74 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 8979], 10.00th=[ 15401], 20.00th=[ 21890], | 30.00th=[ 26870], 40.00th=[ 32637], 50.00th=[ 38536], 60.00th=[ 45351], | 70.00th=[ 53216], 80.00th=[ 63177], 90.00th=[ 80217], 95.00th=[ 99091], | 99.00th=[158335], 99.50th=[200279], 99.90th=[265290], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 7, max= 119, per=25.14%, avg=48.01, stdev=19.91, samples=243 iops : min= 1, max= 29, avg=11.34, stdev= 5.04, samples=243 write: IOPS=12, BW=50.8KiB/s (51.0kB/s)(6296KiB/124008msec); 0 zone resets clat (usec): min=731, max=593079, avg=35857.87, stdev=40303.29 lat (usec): min=731, max=593081, avg=35869.90, stdev=40317.48 clat percentiles (usec): | 1.00th=[ 1004], 5.00th=[ 1139], 10.00th=[ 1237], 20.00th=[ 3163], | 30.00th=[ 7242], 40.00th=[ 16909], 50.00th=[ 25035], 60.00th=[ 34341], | 70.00th=[ 44827], 80.00th=[ 61080], 90.00th=[ 87557], 95.00th=[108528], | 99.00th=[162530], 99.50th=[179307], 99.90th=[375391], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 7, max= 111, per=25.31%, avg=50.61, stdev=20.85, samples=242 iops : min= 1, max= 27, avg=11.99, stdev= 5.24, samples=242 lat (usec) : 50=0.39%, 100=1.79%, 250=0.07%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.46% lat (msec) : 2=7.71%, 4=3.35%, 10=5.79%, 20=10.90%, 50=39.36% lat (msec) : 100=24.28%, 250=5.66%, 500=0.13%, 750=0.03% cpu : usr=0.07%, sys=4.74%, ctx=6008, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179904: Mon Sep 7 18:04:23 2026 read: IOPS=11, BW=47.4KiB/s (48.5kB/s)(5940KiB/125314msec) clat (usec): min=42, max=503977, avg=46704.18, stdev=32865.38 lat (usec): min=43, max=503978, avg=46706.43, stdev=32867.24 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 10552], 10.00th=[ 16188], 20.00th=[ 23462], | 30.00th=[ 29230], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 48497], | 70.00th=[ 55313], 80.00th=[ 65274], 90.00th=[ 81265], 95.00th=[ 98042], | 99.00th=[162530], 99.50th=[189793], 99.90th=[367002], 99.95th=[505414], | 99.99th=[505414] bw ( KiB/s): min= 7, max= 95, per=24.69%, avg=47.15, stdev=17.25, samples=246 iops : min= 1, max= 23, avg=11.12, stdev= 4.35, samples=246 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(6348KiB/125314msec); 0 zone resets clat (usec): min=662, max=624706, avg=34994.01, stdev=39057.69 lat (usec): min=662, max=624708, avg=35002.36, stdev=39054.62 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1139], 10.00th=[ 1254], 20.00th=[ 2933], | 30.00th=[ 7177], 40.00th=[ 16057], 50.00th=[ 24773], 60.00th=[ 33817], | 70.00th=[ 44827], 80.00th=[ 60031], 90.00th=[ 85459], 95.00th=[106431], | 99.00th=[149947], 99.50th=[175113], 99.90th=[308282], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 7, max= 135, per=25.10%, avg=50.20, stdev=24.53, samples=247 iops : min= 1, max= 33, avg=11.88, stdev= 6.20, samples=247 lat (usec) : 50=0.42%, 100=1.40%, 250=0.13%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.49% lat (msec) : 2=7.75%, 4=3.61%, 10=6.05%, 20=10.45%, 50=37.66% lat (msec) : 100=26.43%, 250=5.27%, 500=0.13%, 750=0.07% cpu : usr=0.08%, sys=4.94%, ctx=6280, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179905: Mon Sep 7 18:04:23 2026 read: IOPS=12, BW=49.7KiB/s (50.9kB/s)(6028KiB/121370msec) clat (usec): min=34, max=190522, avg=45176.61, stdev=28340.39 lat (usec): min=35, max=190524, avg=45178.84, stdev=28340.74 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 9765], 10.00th=[ 16581], 20.00th=[ 22938], | 30.00th=[ 28181], 40.00th=[ 33817], 50.00th=[ 40109], 60.00th=[ 45876], | 70.00th=[ 54789], 80.00th=[ 64750], 90.00th=[ 83362], 95.00th=[ 98042], | 99.00th=[143655], 99.50th=[160433], 99.90th=[181404], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 15, max= 127, per=25.94%, avg=49.54, stdev=19.36, samples=237 iops : min= 3, max= 31, avg=11.72, stdev= 4.91, samples=237 write: IOPS=12, BW=51.6KiB/s (52.8kB/s)(6260KiB/121370msec); 0 zone resets clat (usec): min=625, max=576952, avg=33763.07, stdev=41056.99 lat (usec): min=626, max=576955, avg=33765.15, stdev=41056.99 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1139], 10.00th=[ 1221], 20.00th=[ 2278], | 30.00th=[ 5604], 40.00th=[ 12256], 50.00th=[ 22938], 60.00th=[ 31327], | 70.00th=[ 41681], 80.00th=[ 56886], 90.00th=[ 85459], 95.00th=[107480], | 99.00th=[164627], 99.50th=[189793], 99.90th=[396362], 99.95th=[574620], | 99.99th=[574620] bw ( KiB/s): min= 7, max= 103, per=25.68%, avg=51.36, stdev=19.65, samples=237 iops : min= 1, max= 25, avg=12.17, stdev= 4.95, samples=237 lat (usec) : 50=0.46%, 100=1.60%, 250=0.10%, 500=0.03%, 750=0.16% lat (usec) : 1000=0.39% lat (msec) : 2=9.11%, 4=3.71%, 10=6.02%, 20=9.73%, 50=38.74% lat (msec) : 100=24.41%, 250=5.34%, 500=0.16%, 750=0.03% cpu : usr=0.09%, sys=4.72%, ctx=5951, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179906: Mon Sep 7 18:04:23 2026 read: IOPS=12, BW=49.7KiB/s (50.9kB/s)(6052KiB/121863msec) clat (usec): min=34, max=661118, avg=45284.51, stdev=35838.41 lat (usec): min=35, max=661118, avg=45286.01, stdev=35838.19 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 318], 10.00th=[ 14877], 20.00th=[ 22152], | 30.00th=[ 26870], 40.00th=[ 32637], 50.00th=[ 38536], 60.00th=[ 45876], | 70.00th=[ 54264], 80.00th=[ 64226], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[149947], 99.50th=[191890], 99.90th=[438305], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 7, max= 110, per=25.70%, avg=49.08, stdev=19.13, samples=240 iops : min= 1, max= 27, avg=11.60, stdev= 4.84, samples=240 write: IOPS=12, BW=51.2KiB/s (52.4kB/s)(6236KiB/121863msec); 0 zone resets clat (usec): min=716, max=282159, avg=33990.26, stdev=35891.11 lat (usec): min=717, max=282161, avg=33995.25, stdev=35896.50 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1139], 10.00th=[ 1237], 20.00th=[ 2573], | 30.00th=[ 6390], 40.00th=[ 15664], 50.00th=[ 24511], 60.00th=[ 32900], | 70.00th=[ 43254], 80.00th=[ 60556], 90.00th=[ 83362], 95.00th=[103285], | 99.00th=[156238], 99.50th=[177210], 99.90th=[233833], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 126, per=25.24%, avg=50.47, stdev=20.93, samples=240 iops : min= 1, max= 31, avg=11.96, stdev= 5.26, samples=240 lat (usec) : 50=0.29%, 100=1.99%, 250=0.16%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.36% lat (msec) : 2=8.33%, 4=3.74%, 10=5.53%, 20=10.48%, 50=39.42% lat (msec) : 100=24.22%, 250=5.18%, 500=0.13%, 750=0.03% cpu : usr=0.08%, sys=4.98%, ctx=6012, 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=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=192KiB/s (196kB/s), 47.4KiB/s-49.7KiB/s (48.5kB/s-50.9kB/s), io=23.4MiB (24.6MB), run=121370-125314msec WRITE: bw=201KiB/s (205kB/s), 50.7KiB/s-51.6KiB/s (51.9kB/s-52.8kB/s), io=24.6MiB (25.7MB), run=121370-125314msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179908: Mon Sep 7 18:04:56 2026 read: IOPS=9, BW=37.9KiB/s (38.8kB/s)(5992KiB/158047msec) clat (msec): min=4, max=746, avg=40.72, stdev=43.26 lat (msec): min=4, max=746, avg=40.72, stdev=43.26 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 43], 80.00th=[ 61], 90.00th=[ 97], 95.00th=[ 128], | 99.00th=[ 180], 99.50th=[ 209], 99.90th=[ 409], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 192, per=25.52%, avg=38.53, stdev=30.27, samples=302 iops : min= 1, max= 48, avg= 8.98, stdev= 7.61, samples=302 write: IOPS=9, BW=39.8KiB/s (40.8kB/s)(6296KiB/158047msec); 0 zone resets clat (msec): min=10, max=499, avg=61.45, stdev=47.62 lat (msec): min=10, max=499, avg=61.45, stdev=47.62 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 45], 60.00th=[ 56], | 70.00th=[ 74], 80.00th=[ 96], 90.00th=[ 126], 95.00th=[ 153], | 99.00th=[ 222], 99.50th=[ 259], 99.90th=[ 384], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 7, max= 143, per=25.14%, avg=39.71, stdev=28.68, samples=308 iops : min= 1, max= 35, avg= 9.27, stdev= 7.23, samples=308 lat (msec) : 10=4.39%, 20=19.34%, 50=41.44%, 100=20.96%, 250=13.48% lat (msec) : 500=0.36%, 750=0.03% cpu : usr=0.06%, sys=1.74%, ctx=4794, 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=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=179909: Mon Sep 7 18:04:56 2026 read: IOPS=9, BW=37.7KiB/s (38.6kB/s)(5940KiB/157404msec) clat (msec): min=4, max=636, avg=39.20, stdev=39.13 lat (msec): min=4, max=636, avg=39.20, stdev=39.13 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 59], 90.00th=[ 93], 95.00th=[ 118], | 99.00th=[ 174], 99.50th=[ 190], 99.90th=[ 271], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 192, per=25.44%, avg=38.41, stdev=29.88, samples=301 iops : min= 1, max= 48, avg= 8.95, stdev= 7.52, samples=301 write: IOPS=10, BW=40.3KiB/s (41.3kB/s)(6348KiB/157404msec); 0 zone resets clat (msec): min=8, max=503, avg=62.36, stdev=51.28 lat (msec): min=8, max=503, avg=62.36, stdev=51.28 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 37], 50.00th=[ 46], 60.00th=[ 58], | 70.00th=[ 73], 80.00th=[ 93], 90.00th=[ 126], 95.00th=[ 155], | 99.00th=[ 262], 99.50th=[ 313], 99.90th=[ 418], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7, max= 152, per=25.42%, avg=40.17, stdev=28.01, samples=308 iops : min= 1, max= 38, avg= 9.38, stdev= 7.06, samples=308 lat (msec) : 10=4.26%, 20=19.63%, 50=41.11%, 100=22.23%, 250=12.14% lat (msec) : 500=0.55%, 750=0.07% cpu : usr=0.06%, sys=1.71%, ctx=4761, 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=179910: Mon Sep 7 18:04:56 2026 read: IOPS=9, BW=38.3KiB/s (39.2kB/s)(6028KiB/157460msec) clat (msec): min=5, max=271, avg=40.93, stdev=38.72 lat (msec): min=5, max=271, avg=40.93, stdev=38.72 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 63], 90.00th=[ 97], 95.00th=[ 128], | 99.00th=[ 182], 99.50th=[ 205], 99.90th=[ 241], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 7, max= 151, per=25.51%, avg=38.52, stdev=29.19, samples=305 iops : min= 1, max= 37, avg= 8.97, stdev= 7.35, samples=305 write: IOPS=9, BW=39.8KiB/s (40.7kB/s)(6260KiB/157460msec); 0 zone resets clat (msec): min=9, max=632, avg=60.98, stdev=51.44 lat (msec): min=9, max=632, avg=60.99, stdev=51.44 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 30], 40.00th=[ 36], 50.00th=[ 45], 60.00th=[ 55], | 70.00th=[ 70], 80.00th=[ 92], 90.00th=[ 122], 95.00th=[ 157], | 99.00th=[ 245], 99.50th=[ 279], 99.90th=[ 468], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 152, per=25.19%, avg=39.80, stdev=29.18, samples=306 iops : min= 1, max= 38, avg= 9.29, stdev= 7.35, samples=306 lat (msec) : 10=4.04%, 20=20.70%, 50=40.10%, 100=21.94%, 250=12.73% lat (msec) : 500=0.46%, 750=0.03% cpu : usr=0.06%, sys=1.64%, ctx=4759, 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=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=179911: Mon Sep 7 18:04:56 2026 read: IOPS=9, BW=38.3KiB/s (39.2kB/s)(6052KiB/158163msec) clat (msec): min=5, max=250, avg=40.63, stdev=37.59 lat (msec): min=5, max=250, avg=40.63, stdev=37.59 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 44], 80.00th=[ 64], 90.00th=[ 95], 95.00th=[ 123], | 99.00th=[ 171], 99.50th=[ 190], 99.90th=[ 236], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 7, max= 159, per=26.14%, avg=39.48, stdev=29.76, samples=297 iops : min= 1, max= 39, avg= 9.21, stdev= 7.49, samples=297 write: IOPS=9, BW=39.4KiB/s (40.4kB/s)(6236KiB/158163msec); 0 zone resets clat (msec): min=9, max=549, avg=61.81, stdev=51.76 lat (msec): min=9, max=549, avg=61.81, stdev=51.76 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 44], 60.00th=[ 56], | 70.00th=[ 73], 80.00th=[ 96], 90.00th=[ 128], 95.00th=[ 157], | 99.00th=[ 224], 99.50th=[ 334], 99.90th=[ 485], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 143, per=24.65%, avg=38.95, stdev=28.41, samples=310 iops : min= 1, max= 35, avg= 9.08, stdev= 7.15, samples=310 lat (msec) : 10=4.30%, 20=19.34%, 50=41.93%, 100=20.96%, 250=13.12% lat (msec) : 500=0.33%, 750=0.03% cpu : usr=0.07%, sys=1.71%, ctx=4870, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=152KiB/s (155kB/s), 37.7KiB/s-38.3KiB/s (38.6kB/s-39.2kB/s), io=23.4MiB (24.6MB), run=157404-158163msec WRITE: bw=159KiB/s (163kB/s), 39.4KiB/s-40.3KiB/s (40.4kB/s-41.3kB/s), io=24.6MiB (25.7MB), run=157404-158163msec 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=179955: Mon Sep 7 18:05:38 2026 read: IOPS=11, BW=182KiB/s (186kB/s)(5920KiB/32538msec) clat (usec): min=45, max=168762, avg=43468.13, stdev=29743.23 lat (usec): min=45, max=168762, avg=43469.44, stdev=29743.28 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 64], 10.00th=[ 367], 20.00th=[ 20055], | 30.00th=[ 26870], 40.00th=[ 33162], 50.00th=[ 39060], 60.00th=[ 46400], | 70.00th=[ 53216], 80.00th=[ 64226], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[139461], 99.50th=[166724], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 31, max= 375, per=24.10%, avg=177.40, stdev=74.71, samples=63 iops : min= 1, max= 23, avg=10.33, stdev= 4.66, samples=63 write: IOPS=12, BW=196KiB/s (200kB/s)(6368KiB/32538msec); 0 zone resets clat (usec): min=1434, max=206343, avg=40300.23, stdev=38853.19 lat (usec): min=1436, max=206346, avg=40321.44, stdev=38856.30 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1909], 10.00th=[ 3163], 20.00th=[ 6063], | 30.00th=[ 11469], 40.00th=[ 20579], 50.00th=[ 29492], 60.00th=[ 39584], | 70.00th=[ 50594], 80.00th=[ 68682], 90.00th=[ 93848], 95.00th=[119014], | 99.00th=[170918], 99.50th=[204473], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 21, max= 383, per=25.08%, avg=194.14, stdev=79.78, samples=63 iops : min= 1, max= 23, avg=11.38, stdev= 5.02, samples=63 lat (usec) : 50=0.26%, 100=4.04%, 250=0.26%, 500=0.39%, 1000=0.13% lat (msec) : 2=2.86%, 4=4.43%, 10=6.77%, 20=11.07%, 50=38.41% lat (msec) : 100=24.74%, 250=6.64% cpu : usr=0.06%, sys=5.72%, ctx=1695, 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=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=179956: Mon Sep 7 18:05:38 2026 read: IOPS=11, BW=180KiB/s (185kB/s)(5744KiB/31878msec) clat (usec): min=56, max=260660, avg=47228.83, stdev=29355.48 lat (usec): min=56, max=260662, avg=47230.37, stdev=29355.39 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 80], 10.00th=[ 16319], 20.00th=[ 25822], | 30.00th=[ 32113], 40.00th=[ 37487], 50.00th=[ 42730], 60.00th=[ 51119], | 70.00th=[ 56361], 80.00th=[ 66323], 90.00th=[ 82314], 95.00th=[ 98042], | 99.00th=[133694], 99.50th=[183501], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 31, max= 345, per=24.55%, avg=180.69, stdev=74.45, samples=62 iops : min= 1, max= 21, avg=10.52, stdev= 4.75, samples=62 write: IOPS=12, BW=205KiB/s (210kB/s)(6544KiB/31878msec); 0 zone resets clat (usec): min=1107, max=192305, avg=35627.73, stdev=36099.47 lat (usec): min=1109, max=192308, avg=35632.47, stdev=36097.86 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1811], 10.00th=[ 2671], 20.00th=[ 5932], | 30.00th=[ 9372], 40.00th=[ 15270], 50.00th=[ 23987], 60.00th=[ 32637], | 70.00th=[ 45876], 80.00th=[ 63177], 90.00th=[ 84411], 95.00th=[107480], | 99.00th=[152044], 99.50th=[173016], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 62, max= 445, per=26.53%, avg=205.31, stdev=85.25, samples=62 iops : min= 3, max= 27, avg=12.06, stdev= 5.41, samples=62 lat (usec) : 100=2.73%, 250=0.39% lat (msec) : 2=3.39%, 4=4.17%, 10=8.72%, 20=10.03%, 50=36.98% lat (msec) : 100=28.26%, 250=5.21%, 500=0.13% cpu : usr=0.06%, sys=6.08%, ctx=1769, 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=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=179957: Mon Sep 7 18:05:38 2026 read: IOPS=12, BW=198KiB/s (202kB/s)(6256KiB/31671msec) clat (usec): min=47, max=187664, avg=44370.81, stdev=28398.09 lat (usec): min=48, max=187664, avg=44376.48, stdev=28396.17 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 69], 10.00th=[ 16909], 20.00th=[ 24511], | 30.00th=[ 28967], 40.00th=[ 33817], 50.00th=[ 40109], 60.00th=[ 46400], | 70.00th=[ 52691], 80.00th=[ 61604], 90.00th=[ 81265], 95.00th=[ 96994], | 99.00th=[149947], 99.50th=[177210], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 63, max= 383, per=26.83%, avg=197.47, stdev=72.80, samples=62 iops : min= 3, max= 23, avg=11.58, stdev= 4.52, samples=62 write: IOPS=11, BW=190KiB/s (195kB/s)(6032KiB/31671msec); 0 zone resets clat (usec): min=1122, max=212430, avg=37722.77, stdev=35144.57 lat (usec): min=1123, max=212432, avg=37726.75, stdev=35144.24 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1860], 10.00th=[ 3195], 20.00th=[ 6783], | 30.00th=[ 11994], 40.00th=[ 18744], 50.00th=[ 28181], 60.00th=[ 37487], | 70.00th=[ 50594], 80.00th=[ 65274], 90.00th=[ 84411], 95.00th=[107480], | 99.00th=[160433], 99.50th=[187696], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 31, max= 446, per=24.39%, avg=188.74, stdev=83.91, samples=62 iops : min= 1, max= 27, avg=11.02, stdev= 5.31, samples=62 lat (usec) : 50=0.26%, 100=3.12%, 250=0.13%, 750=0.13% lat (msec) : 2=3.12%, 4=3.39%, 10=6.38%, 20=10.68%, 50=41.02% lat (msec) : 100=26.69%, 250=5.08% cpu : usr=0.08%, sys=5.85%, ctx=1699, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179960: Mon Sep 7 18:05:38 2026 read: IOPS=12, BW=196KiB/s (201kB/s)(6032KiB/30803msec) clat (usec): min=41, max=183698, avg=43389.02, stdev=28106.98 lat (usec): min=41, max=183700, avg=43390.37, stdev=28107.06 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 137], 20.00th=[ 22938], | 30.00th=[ 28181], 40.00th=[ 34866], 50.00th=[ 39584], 60.00th=[ 45876], | 70.00th=[ 52691], 80.00th=[ 64750], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[126354], 99.50th=[139461], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 43, max= 447, per=26.51%, avg=195.13, stdev=75.14, samples=60 iops : min= 2, max= 27, avg=11.43, stdev= 4.75, samples=60 write: IOPS=12, BW=203KiB/s (208kB/s)(6256KiB/30803msec); 0 zone resets clat (usec): min=1480, max=164739, avg=35907.28, stdev=33847.79 lat (usec): min=1483, max=164742, avg=35909.81, stdev=33847.76 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2024], 10.00th=[ 3359], 20.00th=[ 6325], | 30.00th=[ 11600], 40.00th=[ 17695], 50.00th=[ 27132], 60.00th=[ 34866], | 70.00th=[ 45351], 80.00th=[ 62129], 90.00th=[ 84411], 95.00th=[107480], | 99.00th=[141558], 99.50th=[162530], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 63, max= 411, per=26.43%, avg=204.60, stdev=82.81, samples=60 iops : min= 3, max= 25, avg=12.02, stdev= 5.24, samples=60 lat (usec) : 50=0.39%, 100=4.17%, 250=0.39%, 500=0.13% lat (msec) : 2=2.47%, 4=3.91%, 10=7.68%, 20=10.55%, 50=40.62% lat (msec) : 100=24.87%, 250=4.82% cpu : usr=0.09%, sys=5.83%, ctx=1733, 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=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=736KiB/s (754kB/s), 180KiB/s-198KiB/s (185kB/s-202kB/s), io=23.4MiB (24.5MB), run=30803-32538msec WRITE: bw=774KiB/s (793kB/s), 190KiB/s-205KiB/s (195kB/s-210kB/s), io=24.6MiB (25.8MB), run=30803-32538msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179954: Mon Sep 7 18:05:48 2026 read: IOPS=8, BW=142KiB/s (145kB/s)(5920KiB/41810msec) clat (msec): min=6, max=274, avg=43.65, stdev=40.05 lat (msec): min=6, max=274, avg=43.65, stdev=40.05 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 47], 80.00th=[ 62], 90.00th=[ 92], 95.00th=[ 116], | 99.00th=[ 220], 99.50th=[ 230], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 478, per=24.82%, avg=141.47, stdev=96.12, samples=81 iops : min= 1, max= 29, avg= 8.04, stdev= 6.09, samples=81 write: IOPS=9, BW=152KiB/s (156kB/s)(6368KiB/41810msec); 0 zone resets clat (msec): min=11, max=214, avg=63.59, stdev=40.19 lat (msec): min=11, max=214, avg=63.59, stdev=40.19 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 36], 40.00th=[ 44], 50.00th=[ 54], 60.00th=[ 63], | 70.00th=[ 75], 80.00th=[ 96], 90.00th=[ 122], 95.00th=[ 148], | 99.00th=[ 197], 99.50th=[ 201], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 30, max= 416, per=25.47%, avg=152.81, stdev=91.54, samples=81 iops : min= 1, max= 26, avg= 8.77, stdev= 5.83, samples=81 lat (msec) : 10=2.21%, 20=14.19%, 50=42.45%, 100=27.47%, 250=13.54% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=1.89%, ctx=1192, 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=179958: Mon Sep 7 18:05:48 2026 read: IOPS=8, BW=137KiB/s (140kB/s)(5744KiB/41976msec) clat (msec): min=6, max=291, avg=44.07, stdev=41.31 lat (msec): min=6, max=291, avg=44.07, stdev=41.31 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 46], 80.00th=[ 62], 90.00th=[ 97], 95.00th=[ 129], | 99.00th=[ 228], 99.50th=[ 279], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 477, per=25.17%, avg=143.48, stdev=97.07, samples=79 iops : min= 1, max= 29, avg= 8.16, stdev= 6.15, samples=79 write: IOPS=9, BW=156KiB/s (160kB/s)(6544KiB/41976msec); 0 zone resets clat (msec): min=8, max=242, avg=63.57, stdev=41.42 lat (msec): min=8, max=242, avg=63.58, stdev=41.42 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 43], 50.00th=[ 52], 60.00th=[ 62], | 70.00th=[ 82], 80.00th=[ 97], 90.00th=[ 124], 95.00th=[ 150], | 99.00th=[ 188], 99.50th=[ 188], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 31, max= 512, per=25.88%, avg=155.28, stdev=99.02, samples=83 iops : min= 1, max= 32, avg= 8.92, stdev= 6.30, samples=83 lat (msec) : 10=3.26%, 20=14.19%, 50=43.36%, 100=25.00%, 250=13.93% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=1.75%, ctx=1192, 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=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=179959: Mon Sep 7 18:05:48 2026 read: IOPS=9, BW=149KiB/s (153kB/s)(6256KiB/41913msec) clat (msec): min=6, max=252, avg=43.62, stdev=38.66 lat (msec): min=6, max=252, avg=43.63, stdev=38.66 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 47], 80.00th=[ 64], 90.00th=[ 93], 95.00th=[ 130], | 99.00th=[ 203], 99.50th=[ 230], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 31, max= 416, per=27.03%, avg=154.09, stdev=102.14, samples=79 iops : min= 1, max= 26, avg= 8.84, stdev= 6.47, samples=79 write: IOPS=8, BW=144KiB/s (147kB/s)(6032KiB/41913msec); 0 zone resets clat (msec): min=11, max=287, avg=64.89, stdev=45.04 lat (msec): min=11, max=287, avg=64.89, stdev=45.04 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 52], 60.00th=[ 65], | 70.00th=[ 79], 80.00th=[ 99], 90.00th=[ 129], 95.00th=[ 159], | 99.00th=[ 205], 99.50th=[ 271], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 31, max= 541, per=24.12%, avg=144.70, stdev=95.36, samples=80 iops : min= 1, max= 33, avg= 8.26, stdev= 6.06, samples=80 lat (msec) : 10=1.95%, 20=15.23%, 50=43.10%, 100=25.65%, 250=13.67% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.93%, ctx=1265, 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=179961: Mon Sep 7 18:05:48 2026 read: IOPS=9, BW=147KiB/s (150kB/s)(6032KiB/41127msec) clat (msec): min=7, max=238, avg=44.06, stdev=38.92 lat (msec): min=7, max=238, avg=44.06, stdev=38.92 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 46], 80.00th=[ 66], 90.00th=[ 100], 95.00th=[ 133], | 99.00th=[ 197], 99.50th=[ 201], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 31, max= 512, per=26.08%, avg=148.68, stdev=95.58, samples=79 iops : min= 1, max= 32, avg= 8.51, stdev= 6.07, samples=79 write: IOPS=9, BW=152KiB/s (156kB/s)(6256KiB/41127msec); 0 zone resets clat (msec): min=14, max=248, avg=61.53, stdev=40.10 lat (msec): min=14, max=248, avg=61.53, stdev=40.10 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 49], 60.00th=[ 61], | 70.00th=[ 72], 80.00th=[ 86], 90.00th=[ 120], 95.00th=[ 146], | 99.00th=[ 199], 99.50th=[ 239], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 31, max= 446, per=25.58%, avg=153.46, stdev=87.78, samples=80 iops : min= 1, max= 27, avg= 8.81, stdev= 5.59, samples=80 lat (msec) : 10=1.82%, 20=14.45%, 50=45.83%, 100=25.52%, 250=12.37% cpu : usr=0.06%, sys=1.92%, ctx=1201, 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=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=571KiB/s (584kB/s), 137KiB/s-149KiB/s (140kB/s-153kB/s), io=23.4MiB (24.5MB), run=41127-41976msec WRITE: bw=600KiB/s (615kB/s), 144KiB/s-156KiB/s (147kB/s-160kB/s), io=24.6MiB (25.8MB), run=41127-41976msec 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=179972: Mon Sep 7 18:06:02 2026 read: IOPS=1, BW=1744KiB/s (1786kB/s)(7168KiB/4109msec) clat (msec): min=100, max=697, avg=307.95, stdev=236.71 lat (msec): min=100, max=697, avg=307.95, stdev=236.71 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 129], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 163], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 535], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1946, max= 5197, per=64.84%, avg=2777.75, stdev=1613.08, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 write: IOPS=1, BW=1246KiB/s (1276kB/s)(5120KiB/4109msec); 0 zone resets clat (msec): min=145, max=857, avg=374.76, stdev=288.41 lat (msec): min=145, max=857, avg=374.85, stdev=288.41 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 409], 80.00th=[ 409], 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= 2011, max= 3750, per=40.98%, avg=2457.75, stdev=861.57, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=2.65%, ctx=54, 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=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=179973: Mon Sep 7 18:06:02 2026 read: IOPS=0, BW=428KiB/s (439kB/s)(2048KiB/4780msec) clat (msec): min=119, max=405, avg=262.71, stdev=201.99 lat (msec): min=119, max=405, avg=262.72, stdev=201.99 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=[ 405], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 1700, max= 1875, per=41.73%, avg=1787.50, stdev=123.74, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2142KiB/s (2194kB/s)(10.0MiB/4780msec); 0 zone resets clat (msec): min=132, max=785, avg=416.78, stdev=244.34 lat (msec): min=132, max=785, avg=416.88, stdev=244.35 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 155], | 30.00th=[ 161], 40.00th=[ 213], 50.00th=[ 401], 60.00th=[ 435], | 70.00th=[ 575], 80.00th=[ 625], 90.00th=[ 693], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1946, max= 3401, per=36.26%, avg=2175.00, stdev=496.49, samples=8 iops : min= 1, max= 3, avg= 1.25, stdev= 0.71, samples=8 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=4.83%, ctx=98, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179974: Mon Sep 7 18:06:02 2026 read: IOPS=1, BW=1399KiB/s (1433kB/s)(6144KiB/4391msec) clat (msec): min=175, max=453, avg=294.07, stdev=104.05 lat (msec): min=175, max=453, avg=294.07, stdev=104.05 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 296], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 1875, max= 2035, per=46.23%, avg=1980.40, stdev=69.27, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1399KiB/s (1433kB/s)(6144KiB/4391msec); 0 zone resets clat (msec): min=134, max=800, avg=431.72, stdev=297.71 lat (msec): min=134, max=800, avg=431.83, stdev=297.73 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 401], | 70.00th=[ 785], 80.00th=[ 785], 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= 1946, max= 3436, per=37.83%, avg=2269.20, stdev=652.81, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=33.33%, 500=50.00%, 1000=16.67% cpu : usr=0.00%, sys=3.08%, ctx=67, 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=179975: Mon Sep 7 18:06:02 2026 read: IOPS=1, BW=1110KiB/s (1137kB/s)(5120KiB/4612msec) clat (msec): min=83, max=770, avg=365.41, stdev=299.75 lat (msec): min=83, max=770, avg=365.41, stdev=299.75 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 84], | 30.00th=[ 128], 40.00th=[ 128], 50.00th=[ 262], 60.00th=[ 262], | 70.00th=[ 584], 80.00th=[ 584], 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= 3750, max= 4071, per=91.28%, avg=3910.50, stdev=226.98, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1554KiB/s (1592kB/s)(7168KiB/4612msec); 0 zone resets clat (msec): min=157, max=605, avg=391.41, stdev=161.96 lat (msec): min=157, max=606, avg=391.76, stdev=162.32 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 288], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 338], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 584], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1946, max= 3663, per=40.08%, avg=2404.00, stdev=839.79, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=16.67%, 500=41.67%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=2.88%, ctx=68, 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=4285KiB/s (4387kB/s), 428KiB/s-1744KiB/s (439kB/s-1786kB/s), io=20.0MiB (20.0MB), run=4109-4780msec WRITE: bw=5998KiB/s (6142kB/s), 1246KiB/s-2142KiB/s (1276kB/s-2194kB/s), io=28.0MiB (29.4MB), run=4109-4780msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179977: Mon Sep 7 18:06:02 2026 read: IOPS=1, BW=1842KiB/s (1886kB/s)(7168KiB/3891msec) clat (msec): min=180, max=363, avg=249.44, stdev=65.35 lat (msec): min=180, max=363, avg=249.44, stdev=65.35 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 184], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 241], 60.00th=[ 247], | 70.00th=[ 247], 80.00th=[ 305], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1899, max= 4015, per=57.46%, avg=2740.25, stdev=985.18, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1316KiB/s (1347kB/s)(5120KiB/3891msec); 0 zone resets clat (msec): min=237, max=1022, avg=411.66, stdev=342.07 lat (msec): min=237, max=1022, avg=411.76, stdev=342.06 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 259], 60.00th=[ 259], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 1899, max= 2043, per=29.99%, avg=2002.20, stdev=59.15, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=58.33%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=11.41%, ctx=196, 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=179978: Mon Sep 7 18:06:02 2026 read: IOPS=0, BW=477KiB/s (488kB/s)(2048KiB/4294msec) clat (msec): min=120, max=222, avg=171.37, stdev=72.52 lat (msec): min=120, max=222, avg=171.37, stdev=72.52 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=[ 224], | 70.00th=[ 224], 80.00th=[ 224], 90.00th=[ 224], 95.00th=[ 224], | 99.00th=[ 224], 99.50th=[ 224], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 1422, max= 2031, per=36.20%, avg=1726.50, stdev=430.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2385KiB/s (2442kB/s)(10.0MiB/4294msec); 0 zone resets clat (msec): min=67, max=750, avg=394.01, stdev=257.65 lat (msec): min=67, max=750, avg=394.91, stdev=256.73 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 132], | 30.00th=[ 190], 40.00th=[ 192], 50.00th=[ 284], 60.00th=[ 388], | 70.00th=[ 558], 80.00th=[ 684], 90.00th=[ 693], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 2007, max= 3799, per=35.62%, avg=2378.20, stdev=794.39, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=25.00%, 1000=8.33% cpu : usr=0.05%, sys=11.58%, ctx=153, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179979: Mon Sep 7 18:06:02 2026 read: IOPS=1, BW=1993KiB/s (2041kB/s)(6144KiB/3083msec) clat (usec): min=352, max=401453, avg=67313.25, stdev=163694.62 lat (usec): min=352, max=401453, avg=67314.23, stdev=163694.30 clat percentiles (usec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 469], | 30.00th=[ 469], 40.00th=[ 494], 50.00th=[ 494], 60.00th=[ 553], | 70.00th=[ 562], 80.00th=[ 562], 90.00th=[400557], 95.00th=[400557], | 99.00th=[400557], 99.50th=[400557], 99.90th=[400557], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 2031, max= 6131, per=85.57%, avg=4081.00, stdev=2899.14, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1993KiB/s (2041kB/s)(6144KiB/3083msec); 0 zone resets clat (msec): min=182, max=930, avg=445.57, stdev=269.51 lat (msec): min=182, max=930, avg=445.62, stdev=269.53 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 405], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 1712, max= 4087, per=38.43%, avg=2566.00, stdev=1320.54, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=25.00%, 750=16.67% lat (msec) : 250=8.33%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.10%, sys=10.61%, ctx=129, 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=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=179980: Mon Sep 7 18:06:02 2026 read: IOPS=1, BW=1246KiB/s (1276kB/s)(5120KiB/4108msec) clat (usec): min=490, max=402553, avg=146050.21, stdev=200620.44 lat (usec): min=491, max=402554, avg=146051.42, stdev=200620.50 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 490], | 30.00th=[ 519], 40.00th=[ 519], 50.00th=[ 1729], 60.00th=[ 1729], | 70.00th=[325059], 80.00th=[325059], 90.00th=[400557], 95.00th=[400557], | 99.00th=[400557], 99.50th=[400557], 99.90th=[400557], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 2031, max= 6035, per=84.57%, avg=4033.00, stdev=2831.26, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1745KiB/s (1787kB/s)(7168KiB/4108msec); 0 zone resets clat (msec): min=228, max=642, avg=480.53, stdev=169.02 lat (msec): min=228, max=642, avg=480.61, stdev=168.99 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 228], 10.00th=[ 228], 20.00th=[ 264], | 30.00th=[ 477], 40.00th=[ 477], 50.00th=[ 567], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 617], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1558, max= 2031, per=28.53%, avg=1905.20, stdev=201.62, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 250=8.33%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=10.54%, ctx=147, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4769KiB/s (4884kB/s), 477KiB/s-1993KiB/s (488kB/s-2041kB/s), io=20.0MiB (20.0MB), run=3083-4294msec WRITE: bw=6677KiB/s (6837kB/s), 1316KiB/s-2385KiB/s (1347kB/s-2442kB/s), io=28.0MiB (29.4MB), run=3083-4294msec 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=179988: Mon Sep 7 18:06:18 2026 read: IOPS=1, BW=4328KiB/s (4432kB/s)(12.0MiB/2839msec) clat (msec): min=380, max=1270, avg=927.99, stdev=478.89 lat (msec): min=380, max=1270, avg=927.99, stdev=478.89 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 7984, max= 8143, per=100.00%, avg=8063.50, stdev=112.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.38%, ctx=46, 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=179991: Mon Sep 7 18:06:18 2026 read: IOPS=0, BW=1339KiB/s (1371kB/s)(4096KiB/3059msec) clat (nsec): min=1284.3M, max=1284.3M, avg=1284317402.00, stdev= 0.00 lat (nsec): min=1284.3M, max=1284.3M, avg=1284319722.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1284], 5.00th=[ 1284], 10.00th=[ 1284], 20.00th=[ 1284], | 30.00th=[ 1284], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2678KiB/s (2742kB/s)(8192KiB/3059msec); 0 zone resets clat (msec): min=714, max=1014, avg=864.46, stdev=212.06 lat (msec): min=714, max=1014, avg=864.77, stdev=211.94 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 1011], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 8192, max= 8192, per=77.68%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.27%, ctx=40, 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=179993: Mon Sep 7 18:06:18 2026 write: IOPS=0, BW=3955KiB/s (4050kB/s)(12.0MiB/3107msec); 0 zone resets clat (msec): min=408, max=1600, avg=996.40, stdev=596.23 lat (msec): min=409, max=1601, avg=996.73, stdev=596.28 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 7984, max= 8159, per=76.54%, avg=8071.50, stdev=123.74, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=7.95%, ctx=94, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179995: Mon Sep 7 18:06:18 2026 write: IOPS=1, BW=4565KiB/s (4674kB/s)(12.0MiB/2692msec); 0 zone resets clat (msec): min=188, max=2033, avg=855.78, stdev=1022.75 lat (msec): min=189, max=2035, avg=856.95, stdev=1023.97 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 347], | 70.00th=[ 2039], 80.00th=[ 2039], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7772, max= 8159, per=75.53%, avg=7965.50, stdev=273.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.02%, ctx=62, 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=5356KiB/s (5485kB/s), 1339KiB/s-4328KiB/s (1371kB/s-4432kB/s), io=16.0MiB (16.8MB), run=2839-3059msec WRITE: bw=10.3MiB/s (10.8MB/s), 2678KiB/s-4565KiB/s (2742kB/s-4674kB/s), io=32.0MiB (33.6MB), run=2692-3107msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179989: Mon Sep 7 18:06:18 2026 read: IOPS=1, BW=4604KiB/s (4714kB/s)(12.0MiB/2669msec) clat (msec): min=695, max=781, avg=739.34, stdev=42.93 lat (msec): min=695, max=781, avg=739.34, stdev=42.93 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 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=66.67%, 1000=33.33% cpu : usr=0.37%, sys=12.41%, ctx=290, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179990: Mon Sep 7 18:06:18 2026 read: IOPS=0, BW=1869KiB/s (1913kB/s)(4096KiB/2192msec) clat (nsec): min=758090k, max=758090k, avg=758089528.00, stdev= 0.00 lat (nsec): min=758093k, max=758093k, avg=758092863.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3737KiB/s (3827kB/s)(8192KiB/2192msec); 0 zone resets clat (msec): min=283, max=836, avg=559.97, stdev=390.49 lat (msec): min=284, max=836, avg=560.24, stdev=390.40 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 8078, max= 8078, per=76.87%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=9.22%, ctx=197, 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=179992: Mon Sep 7 18:06:18 2026 write: IOPS=0, BW=3941KiB/s (4036kB/s)(12.0MiB/3118msec); 0 zone resets clat (msec): min=296, max=1782, avg=1024.05, stdev=743.71 lat (msec): min=297, max=1783, avg=1024.47, stdev=743.68 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7984, max= 8159, per=76.81%, avg=8071.50, stdev=123.74, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.02%, ctx=42, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179994: Mon Sep 7 18:06:18 2026 write: IOPS=1, BW=4692KiB/s (4804kB/s)(12.0MiB/2619msec); 0 zone resets clat (msec): min=240, max=1877, avg=812.28, stdev=923.74 lat (msec): min=241, max=1878, avg=812.68, stdev=923.68 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 1871], 80.00th=[ 1871], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 5728, max= 8031, per=65.46%, avg=6879.50, stdev=1628.47, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.13%, ctx=72, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6139KiB/s (6286kB/s), 1869KiB/s-4604KiB/s (1913kB/s-4714kB/s), io=16.0MiB (16.8MB), run=2192-2669msec WRITE: bw=10.3MiB/s (10.8MB/s), 3737KiB/s-4692KiB/s (3827kB/s-4804kB/s), io=32.0MiB (33.6MB), run=2192-3118msec