== sanity test 398b: DIO and buffer IO race ============== 04:02:37 (1788336157) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.83898 s, 13.1 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=180640: Wed Sep 2 04:04:05 2026 read: IOPS=20, BW=80.5KiB/s (82.5kB/s)(5992KiB/74410msec) clat (usec): min=35, max=417544, avg=26122.42, stdev=17548.68 lat (usec): min=36, max=417548, avg=26124.04, stdev=17548.89 clat percentiles (usec): | 1.00th=[ 68], 5.00th=[ 8848], 10.00th=[ 11600], 20.00th=[ 14484], | 30.00th=[ 17433], 40.00th=[ 20579], 50.00th=[ 23462], 60.00th=[ 26870], | 70.00th=[ 30802], 80.00th=[ 36439], 90.00th=[ 43254], 95.00th=[ 50594], | 99.00th=[ 78119], 99.50th=[ 90702], 99.90th=[110625], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 31, max= 159, per=24.89%, avg=79.88, stdev=23.94, samples=147 iops : min= 7, max= 39, avg=19.41, stdev= 6.01, samples=147 write: IOPS=21, BW=84.6KiB/s (86.6kB/s)(6296KiB/74410msec); 0 zone resets clat (usec): min=968, max=205795, avg=22334.78, stdev=20839.03 lat (usec): min=969, max=205795, avg=22336.98, stdev=20838.83 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1713], 10.00th=[ 2278], 20.00th=[ 3785], | 30.00th=[ 6456], 40.00th=[ 12256], 50.00th=[ 17171], 60.00th=[ 22152], | 70.00th=[ 28705], 80.00th=[ 38536], 90.00th=[ 51643], 95.00th=[ 62653], | 99.00th=[ 84411], 99.50th=[ 98042], 99.90th=[130548], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 24, max= 160, per=25.01%, avg=84.04, stdev=26.48, samples=147 iops : min= 6, max= 40, avg=20.46, stdev= 6.62, samples=147 lat (usec) : 50=0.16%, 100=0.88%, 250=0.52%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=3.78%, 4=7.06%, 10=8.98%, 20=25.23%, 50=44.89% lat (msec) : 100=7.98%, 250=0.33%, 500=0.03% cpu : usr=0.10%, sys=11.28%, ctx=7711, 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=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=180641: Wed Sep 2 04:04:05 2026 read: IOPS=19, BW=79.6KiB/s (81.5kB/s)(5940KiB/74665msec) clat (usec): min=46, max=388258, avg=27609.46, stdev=19084.66 lat (usec): min=47, max=388260, avg=27617.61, stdev=19082.51 clat percentiles (usec): | 1.00th=[ 71], 5.00th=[ 9503], 10.00th=[ 12125], 20.00th=[ 15139], | 30.00th=[ 17695], 40.00th=[ 20055], 50.00th=[ 23725], 60.00th=[ 27919], | 70.00th=[ 32113], 80.00th=[ 38011], 90.00th=[ 46924], 95.00th=[ 55837], | 99.00th=[ 91751], 99.50th=[104334], 99.90th=[149947], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 5, max= 128, per=24.70%, avg=79.28, stdev=23.41, samples=148 iops : min= 1, max= 32, avg=19.26, stdev= 5.89, samples=148 write: IOPS=21, BW=85.0KiB/s (87.1kB/s)(6348KiB/74665msec); 0 zone resets clat (usec): min=876, max=133052, avg=21143.57, stdev=19396.72 lat (usec): min=878, max=133053, avg=21145.52, stdev=19397.20 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1565], 10.00th=[ 2147], 20.00th=[ 3425], | 30.00th=[ 6259], 40.00th=[ 12125], 50.00th=[ 16581], 60.00th=[ 21627], | 70.00th=[ 27395], 80.00th=[ 35914], 90.00th=[ 46400], 95.00th=[ 58983], | 99.00th=[ 89654], 99.50th=[ 95945], 99.90th=[114820], 99.95th=[132645], | 99.99th=[132645] bw ( KiB/s): min= 17, max= 167, per=25.16%, avg=84.53, stdev=29.29, samples=148 iops : min= 4, max= 41, avg=20.58, stdev= 7.34, samples=148 lat (usec) : 50=0.07%, 100=0.65%, 250=0.49%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=4.46%, 4=7.45%, 10=8.30%, 20=27.38%, 50=43.20% lat (msec) : 100=7.29%, 250=0.46%, 500=0.03% cpu : usr=0.10%, sys=11.25%, ctx=7520, 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=180642: Wed Sep 2 04:04:05 2026 read: IOPS=20, BW=82.4KiB/s (84.3kB/s)(6028KiB/73188msec) clat (usec): min=34, max=161879, avg=26145.93, stdev=15294.84 lat (usec): min=35, max=161881, avg=26148.44, stdev=15294.88 clat percentiles (usec): | 1.00th=[ 70], 5.00th=[ 9241], 10.00th=[ 11863], 20.00th=[ 14877], | 30.00th=[ 17433], 40.00th=[ 20055], 50.00th=[ 22938], 60.00th=[ 26346], | 70.00th=[ 30278], 80.00th=[ 35390], 90.00th=[ 44827], 95.00th=[ 53216], | 99.00th=[ 81265], 99.50th=[ 89654], 99.90th=[123208], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 28, max= 152, per=25.54%, avg=81.97, stdev=23.13, samples=145 iops : min= 7, max= 38, avg=19.94, stdev= 5.81, samples=145 write: IOPS=21, BW=85.5KiB/s (87.6kB/s)(6260KiB/73188msec); 0 zone resets clat (usec): min=719, max=442049, avg=21523.76, stdev=22633.35 lat (usec): min=720, max=442054, avg=21525.55, stdev=22633.43 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1565], 10.00th=[ 2114], 20.00th=[ 3556], | 30.00th=[ 5669], 40.00th=[ 11207], 50.00th=[ 16909], 60.00th=[ 21627], | 70.00th=[ 27132], 80.00th=[ 35914], 90.00th=[ 50070], 95.00th=[ 61604], | 99.00th=[ 86508], 99.50th=[ 92799], 99.90th=[166724], 99.95th=[442500], | 99.99th=[442500] bw ( KiB/s): min= 23, max= 160, per=25.34%, avg=85.13, stdev=27.40, samples=145 iops : min= 5, max= 40, avg=20.74, stdev= 6.90, samples=145 lat (usec) : 50=0.16%, 100=0.94%, 250=0.26%, 750=0.03%, 1000=0.16% lat (msec) : 2=4.20%, 4=7.16%, 10=9.60%, 20=26.11%, 50=42.97% lat (msec) : 100=8.14%, 250=0.23%, 500=0.03% cpu : usr=0.12%, sys=11.11%, ctx=7594, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180643: Wed Sep 2 04:04:05 2026 read: IOPS=20, BW=81.5KiB/s (83.5kB/s)(6052KiB/74236msec) clat (usec): min=43, max=148333, avg=26222.45, stdev=15717.49 lat (usec): min=44, max=148334, avg=26224.02, stdev=15717.57 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 9110], 10.00th=[ 11600], 20.00th=[ 14746], | 30.00th=[ 17171], 40.00th=[ 20055], 50.00th=[ 23200], 60.00th=[ 26608], | 70.00th=[ 30802], 80.00th=[ 35914], 90.00th=[ 43779], 95.00th=[ 54789], | 99.00th=[ 80217], 99.50th=[ 99091], 99.90th=[145753], 99.95th=[147850], | 99.99th=[147850] bw ( KiB/s): min= 17, max= 144, per=25.33%, avg=81.30, stdev=24.90, samples=147 iops : min= 4, max= 36, avg=19.78, stdev= 6.30, samples=147 write: IOPS=21, BW=84.0KiB/s (86.0kB/s)(6236KiB/74236msec); 0 zone resets clat (usec): min=645, max=442083, avg=22095.16, stdev=23787.76 lat (usec): min=646, max=442086, avg=22098.87, stdev=23786.13 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1631], 10.00th=[ 2212], 20.00th=[ 3425], | 30.00th=[ 5473], 40.00th=[ 11600], 50.00th=[ 16581], 60.00th=[ 21627], | 70.00th=[ 27919], 80.00th=[ 36439], 90.00th=[ 50070], 95.00th=[ 63177], | 99.00th=[ 91751], 99.50th=[106431], 99.90th=[193987], 99.95th=[442500], | 99.99th=[442500] bw ( KiB/s): min= 22, max= 166, per=24.90%, avg=83.67, stdev=27.22, samples=147 iops : min= 5, max= 41, avg=20.37, stdev= 6.82, samples=147 lat (usec) : 50=0.07%, 100=0.91%, 250=0.52%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=3.81%, 4=8.11%, 10=8.53%, 20=26.66%, 50=42.87% lat (msec) : 100=7.81%, 250=0.49%, 500=0.03% cpu : usr=0.13%, sys=11.18%, ctx=7620, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=322KiB/s (329kB/s), 79.6KiB/s-82.4KiB/s (81.5kB/s-84.3kB/s), io=23.4MiB (24.6MB), run=73188-74665msec WRITE: bw=337KiB/s (345kB/s), 84.0KiB/s-85.5KiB/s (86.0kB/s-87.6kB/s), io=24.6MiB (25.7MB), run=73188-74665msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180635: Wed Sep 2 04:04:27 2026 read: IOPS=15, BW=61.9KiB/s (63.4kB/s)(5992KiB/96769msec) clat (msec): min=4, max=673, avg=25.70, stdev=27.63 lat (msec): min=4, max=673, avg=25.70, stdev=27.63 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 37], 90.00th=[ 57], 95.00th=[ 72], | 99.00th=[ 110], 99.50th=[ 123], 99.90th=[ 176], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 216, per=24.91%, avg=61.52, stdev=39.22, samples=191 iops : min= 1, max= 54, avg=14.83, stdev= 9.85, samples=191 write: IOPS=16, BW=65.1KiB/s (66.6kB/s)(6296KiB/96769msec); 0 zone resets clat (msec): min=7, max=210, avg=36.85, stdev=24.47 lat (msec): min=7, max=210, avg=36.85, stdev=24.47 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 55], 90.00th=[ 69], 95.00th=[ 85], | 99.00th=[ 122], 99.50th=[ 142], 99.90th=[ 197], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 15, max= 199, per=25.20%, avg=65.02, stdev=36.44, samples=190 iops : min= 3, max= 49, avg=15.71, stdev= 9.14, samples=190 lat (msec) : 10=8.69%, 20=34.64%, 50=38.25%, 100=16.50%, 250=1.89% lat (msec) : 750=0.03% cpu : usr=0.10%, sys=4.12%, 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=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=180636: Wed Sep 2 04:04:27 2026 read: IOPS=15, BW=61.2KiB/s (62.6kB/s)(5940KiB/97114msec) clat (msec): min=4, max=645, avg=25.21, stdev=26.88 lat (msec): min=4, max=645, avg=25.21, stdev=26.88 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 35], 90.00th=[ 57], 95.00th=[ 74], | 99.00th=[ 102], 99.50th=[ 111], 99.90th=[ 159], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 7, max= 200, per=24.69%, avg=60.99, stdev=40.32, samples=192 iops : min= 1, max= 50, avg=14.70, stdev=10.11, samples=192 write: IOPS=16, BW=65.4KiB/s (66.9kB/s)(6348KiB/97114msec); 0 zone resets clat (msec): min=8, max=238, avg=37.40, stdev=26.55 lat (msec): min=8, max=238, avg=37.40, stdev=26.55 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 56], 90.00th=[ 73], 95.00th=[ 88], | 99.00th=[ 142], 99.50th=[ 155], 99.90th=[ 207], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 7, max= 168, per=25.19%, avg=64.99, stdev=37.61, samples=192 iops : min= 1, max= 42, avg=15.70, stdev= 9.44, samples=192 lat (msec) : 10=9.99%, 20=33.72%, 50=38.28%, 100=15.92%, 250=2.05% lat (msec) : 750=0.03% cpu : usr=0.09%, sys=4.16%, ctx=5051, 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=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=180637: Wed Sep 2 04:04:27 2026 read: IOPS=15, BW=62.3KiB/s (63.8kB/s)(6028KiB/96748msec) clat (msec): min=4, max=176, avg=25.58, stdev=22.26 lat (msec): min=4, max=176, avg=25.58, stdev=22.26 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 38], 90.00th=[ 57], 95.00th=[ 73], | 99.00th=[ 107], 99.50th=[ 120], 99.90th=[ 159], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 7, max= 176, per=25.25%, avg=62.36, stdev=36.96, samples=190 iops : min= 1, max= 44, avg=15.04, stdev= 9.28, samples=190 write: IOPS=16, BW=64.7KiB/s (66.3kB/s)(6260KiB/96748msec); 0 zone resets clat (msec): min=7, max=706, avg=37.02, stdev=29.23 lat (msec): min=7, max=706, avg=37.02, stdev=29.23 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 53], 90.00th=[ 69], 95.00th=[ 84], | 99.00th=[ 118], 99.50th=[ 140], 99.90th=[ 243], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 15, max= 183, per=24.93%, avg=64.32, stdev=37.78, samples=191 iops : min= 3, max= 45, avg=15.53, stdev= 9.47, samples=191 lat (msec) : 10=8.85%, 20=32.68%, 50=40.98%, 100=15.66%, 250=1.79% lat (msec) : 750=0.03% cpu : usr=0.09%, sys=4.12%, ctx=4972, 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=180638: Wed Sep 2 04:04:27 2026 read: IOPS=15, BW=62.5KiB/s (64.1kB/s)(6052KiB/96756msec) clat (msec): min=4, max=166, avg=24.83, stdev=20.71 lat (msec): min=4, max=166, avg=24.83, stdev=20.71 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 37], 90.00th=[ 56], 95.00th=[ 69], | 99.00th=[ 97], 99.50th=[ 110], 99.90th=[ 148], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 7, max= 183, per=25.45%, avg=62.86, stdev=37.83, samples=189 iops : min= 1, max= 45, avg=15.17, stdev= 9.48, samples=189 write: IOPS=16, BW=64.5KiB/s (65.0kB/s)(6236KiB/96756msec); 0 zone resets clat (msec): min=8, max=697, avg=37.78, stdev=30.44 lat (msec): min=8, max=697, avg=37.78, stdev=30.44 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 55], 90.00th=[ 73], 95.00th=[ 88], | 99.00th=[ 130], 99.50th=[ 163], 99.90th=[ 192], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 15, max= 168, per=24.84%, avg=64.08, stdev=36.06, samples=191 iops : min= 3, max= 42, avg=15.47, stdev= 9.06, samples=191 lat (msec) : 10=8.40%, 20=34.57%, 50=38.93%, 100=16.24%, 250=1.82% lat (msec) : 750=0.03% cpu : usr=0.11%, sys=4.16%, ctx=4917, 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=247KiB/s (253kB/s), 61.2KiB/s-62.5KiB/s (62.6kB/s-64.1kB/s), io=23.4MiB (24.6MB), run=96748-97114msec WRITE: bw=259KiB/s (265kB/s), 64.5KiB/s-65.4KiB/s (65.0kB/s-66.9kB/s), io=24.6MiB (25.7MB), run=96748-97114msec 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=180681: Wed Sep 2 04:04:54 2026 read: IOPS=19, BW=307KiB/s (314kB/s)(5920KiB/19305msec) clat (usec): min=50, max=98053, avg=26065.99, stdev=15661.33 lat (usec): min=51, max=98054, avg=26067.83, stdev=15661.21 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 113], 10.00th=[ 9110], 20.00th=[15139], | 30.00th=[17957], 40.00th=[20579], 50.00th=[23462], 60.00th=[28181], | 70.00th=[31589], 80.00th=[36439], 90.00th=[44303], 95.00th=[53216], | 99.00th=[82314], 99.50th=[89654], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 189, max= 512, per=25.18%, avg=307.18, stdev=79.12, samples=38 iops : min= 11, max= 32, avg=18.55, stdev= 5.00, samples=38 write: IOPS=20, BW=330KiB/s (338kB/s)(6368KiB/19305msec); 0 zone resets clat (usec): min=1269, max=127946, avg=23817.85, stdev=20355.12 lat (usec): min=1270, max=127948, avg=23820.32, stdev=20355.08 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2474], 10.00th=[ 3818], 20.00th=[ 6063], | 30.00th=[ 9372], 40.00th=[ 14615], 50.00th=[ 17957], 60.00th=[ 22152], | 70.00th=[ 29230], 80.00th=[ 41681], 90.00th=[ 50594], 95.00th=[ 62129], | 99.00th=[ 86508], 99.50th=[108528], 99.90th=[128451], 99.95th=[128451], | 99.99th=[128451] bw ( KiB/s): min= 95, max= 509, per=25.69%, avg=329.89, stdev=90.08, samples=38 iops : min= 5, max= 31, avg=19.97, stdev= 5.65, samples=38 lat (usec) : 100=1.95%, 250=2.08%, 1000=0.13% lat (msec) : 2=1.30%, 4=4.30%, 10=11.46%, 20=24.87%, 50=44.66% lat (msec) : 100=8.98%, 250=0.26% cpu : usr=0.10%, sys=13.00%, ctx=2117, 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=180682: Wed Sep 2 04:04:54 2026 read: IOPS=18, BW=293KiB/s (300kB/s)(5744KiB/19624msec) clat (usec): min=38, max=107138, avg=27267.40, stdev=16327.87 lat (usec): min=39, max=107139, avg=27268.50, stdev=16327.86 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 101], 10.00th=[ 10159], 20.00th=[ 15795], | 30.00th=[ 19268], 40.00th=[ 22152], 50.00th=[ 25560], 60.00th=[ 28443], | 70.00th=[ 32900], 80.00th=[ 37487], 90.00th=[ 46924], 95.00th=[ 53216], | 99.00th=[ 90702], 99.50th=[100140], 99.90th=[107480], 99.95th=[107480], | 99.99th=[107480] bw ( KiB/s): min= 54, max= 480, per=24.13%, avg=294.34, stdev=91.54, samples=38 iops : min= 3, max= 30, avg=17.74, stdev= 5.72, samples=38 write: IOPS=20, BW=333KiB/s (341kB/s)(6544KiB/19624msec); 0 zone resets clat (usec): min=1337, max=127853, avg=23620.52, stdev=21034.72 lat (usec): min=1338, max=127856, avg=23622.97, stdev=21034.75 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2442], 10.00th=[ 3818], 20.00th=[ 5473], | 30.00th=[ 9372], 40.00th=[ 13960], 50.00th=[ 17957], 60.00th=[ 22414], | 70.00th=[ 27395], 80.00th=[ 38011], 90.00th=[ 52691], 95.00th=[ 69731], | 99.00th=[ 99091], 99.50th=[100140], 99.90th=[127402], 99.95th=[127402], | 99.99th=[127402] bw ( KiB/s): min= 128, max= 606, per=25.79%, avg=331.11, stdev=108.95, samples=38 iops : min= 8, max= 37, avg=20.05, stdev= 6.79, samples=38 lat (usec) : 50=0.26%, 100=1.95%, 250=1.17%, 500=0.13%, 1000=0.13% lat (msec) : 2=1.43%, 4=4.56%, 10=11.46%, 20=22.66%, 50=46.88% lat (msec) : 100=8.85%, 250=0.52% cpu : usr=0.10%, sys=13.02%, ctx=2100, 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=180683: Wed Sep 2 04:04:54 2026 read: IOPS=20, BW=322KiB/s (329kB/s)(6256KiB/19453msec) clat (usec): min=55, max=143037, avg=26874.27, stdev=18508.76 lat (usec): min=56, max=143038, avg=26876.82, stdev=18507.98 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 114], 10.00th=[ 1254], 20.00th=[ 15008], | 30.00th=[ 17695], 40.00th=[ 20317], 50.00th=[ 22938], 60.00th=[ 27395], | 70.00th=[ 31589], 80.00th=[ 38011], 90.00th=[ 50594], 95.00th=[ 59507], | 99.00th=[ 94897], 99.50th=[101188], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 158, max= 536, per=26.44%, avg=322.61, stdev=90.16, samples=38 iops : min= 9, max= 33, avg=19.50, stdev= 5.71, samples=38 write: IOPS=19, BW=310KiB/s (318kB/s)(6032KiB/19453msec); 0 zone resets clat (usec): min=1568, max=128643, avg=23578.58, stdev=20436.58 lat (usec): min=1570, max=128646, avg=23581.47, stdev=20436.62 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2769], 10.00th=[ 3851], 20.00th=[ 6128], | 30.00th=[ 8979], 40.00th=[ 14615], 50.00th=[ 18482], 60.00th=[ 23725], | 70.00th=[ 28967], 80.00th=[ 38011], 90.00th=[ 48497], 95.00th=[ 63701], | 99.00th=[ 94897], 99.50th=[114820], 99.90th=[128451], 99.95th=[128451], | 99.99th=[128451] bw ( KiB/s): min= 95, max= 544, per=23.81%, avg=305.74, stdev=112.91, samples=38 iops : min= 5, max= 34, avg=18.45, stdev= 7.22, samples=38 lat (usec) : 100=1.82%, 250=2.73%, 500=0.39%, 750=0.13% lat (msec) : 2=0.91%, 4=4.43%, 10=10.81%, 20=24.48%, 50=44.14% lat (msec) : 100=9.64%, 250=0.52% cpu : usr=0.10%, sys=12.69%, ctx=2169, 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=180684: Wed Sep 2 04:04:54 2026 read: IOPS=19, BW=308KiB/s (316kB/s)(6032KiB/19570msec) clat (usec): min=41, max=107960, avg=27985.98, stdev=18095.75 lat (usec): min=41, max=107961, avg=27987.17, stdev=18095.72 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 90], 10.00th=[ 8225], 20.00th=[ 15795], | 30.00th=[ 18744], 40.00th=[ 21627], 50.00th=[ 25560], 60.00th=[ 28705], | 70.00th=[ 34341], 80.00th=[ 39060], 90.00th=[ 49021], 95.00th=[ 61604], | 99.00th=[ 96994], 99.50th=[105382], 99.90th=[107480], 99.95th=[107480], | 99.99th=[107480] bw ( KiB/s): min= 110, max= 509, per=25.28%, avg=308.37, stdev=87.67, samples=38 iops : min= 6, max= 31, avg=18.61, stdev= 5.56, samples=38 write: IOPS=19, BW=320KiB/s (327kB/s)(6256KiB/19570msec); 0 zone resets clat (usec): min=1550, max=134744, avg=22475.16, stdev=21585.78 lat (usec): min=1552, max=134747, avg=22477.37, stdev=21585.78 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2474], 10.00th=[ 3228], 20.00th=[ 5014], | 30.00th=[ 6718], 40.00th=[ 11338], 50.00th=[ 15926], 60.00th=[ 20317], | 70.00th=[ 26346], 80.00th=[ 38011], 90.00th=[ 51643], 95.00th=[ 64226], | 99.00th=[107480], 99.50th=[123208], 99.90th=[135267], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 126, max= 544, per=24.85%, avg=319.08, stdev=108.32, samples=38 iops : min= 7, max= 34, avg=19.29, stdev= 6.87, samples=38 lat (usec) : 50=0.13%, 100=2.73%, 250=1.69%, 500=0.13% lat (msec) : 2=1.56%, 4=5.73%, 10=11.72%, 20=22.92%, 50=43.49% lat (msec) : 100=9.11%, 250=0.78% cpu : usr=0.11%, sys=12.61%, ctx=2141, 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=1221KiB/s (1250kB/s), 293KiB/s-322KiB/s (300kB/s-329kB/s), io=23.4MiB (24.5MB), run=19305-19624msec WRITE: bw=1284KiB/s (1315kB/s), 310KiB/s-333KiB/s (318kB/s-341kB/s), io=24.6MiB (25.8MB), run=19305-19624msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180677: Wed Sep 2 04:05:00 2026 read: IOPS=14, BW=231KiB/s (237kB/s)(5920KiB/25584msec) clat (msec): min=4, max=150, avg=27.98, stdev=25.37 lat (msec): min=4, max=150, avg=27.98, stdev=25.38 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 28], 80.00th=[ 44], 90.00th=[ 67], 95.00th=[ 82], | 99.00th=[ 120], 99.50th=[ 142], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 32, max= 608, per=23.85%, avg=223.22, stdev=135.80, samples=50 iops : min= 2, max= 38, avg=13.28, stdev= 8.61, samples=50 write: IOPS=15, BW=249KiB/s (255kB/s)(6368KiB/25584msec); 0 zone resets clat (msec): min=9, max=166, avg=37.92, stdev=24.72 lat (msec): min=9, max=166, avg=37.93, stdev=24.71 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 54], 90.00th=[ 72], 95.00th=[ 88], | 99.00th=[ 133], 99.50th=[ 157], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 63, max= 763, per=24.77%, avg=243.70, stdev=144.92, samples=50 iops : min= 3, max= 47, avg=14.58, stdev= 9.14, samples=50 lat (msec) : 10=8.33%, 20=33.07%, 50=38.15%, 100=18.10%, 250=2.34% cpu : usr=0.10%, sys=4.25%, ctx=1307, 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=180678: Wed Sep 2 04:05:00 2026 read: IOPS=14, BW=227KiB/s (232kB/s)(5744KiB/25340msec) clat (msec): min=5, max=138, avg=26.27, stdev=23.34 lat (msec): min=5, max=138, avg=26.27, stdev=23.34 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 36], 90.00th=[ 61], 95.00th=[ 77], | 99.00th=[ 126], 99.50th=[ 131], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 58, max= 576, per=24.48%, avg=229.16, stdev=134.95, samples=49 iops : min= 3, max= 36, avg=13.65, stdev= 8.57, samples=49 write: IOPS=16, BW=258KiB/s (264kB/s)(6544KiB/25340msec); 0 zone resets clat (msec): min=10, max=151, avg=38.67, stdev=24.14 lat (msec): min=10, max=151, avg=38.67, stdev=24.14 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 29], 60.00th=[ 37], | 70.00th=[ 47], 80.00th=[ 57], 90.00th=[ 74], 95.00th=[ 87], | 99.00th=[ 113], 99.50th=[ 122], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 95, max= 667, per=25.97%, avg=255.58, stdev=145.31, samples=50 iops : min= 5, max= 41, avg=15.32, stdev= 9.15, samples=50 lat (msec) : 10=8.20%, 20=31.12%, 50=41.02%, 100=17.19%, 250=2.47% cpu : usr=0.06%, sys=4.28%, ctx=1272, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180679: Wed Sep 2 04:05:00 2026 read: IOPS=15, BW=248KiB/s (254kB/s)(6256KiB/25262msec) clat (msec): min=5, max=127, avg=25.58, stdev=22.47 lat (msec): min=5, max=127, avg=25.58, stdev=22.47 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 35], 90.00th=[ 61], 95.00th=[ 79], | 99.00th=[ 115], 99.50th=[ 125], 99.90th=[ 128], 99.95th=[ 128], | 99.99th=[ 128] bw ( KiB/s): min= 31, max= 704, per=26.52%, avg=248.22, stdev=163.85, samples=50 iops : min= 1, max= 44, avg=14.86, stdev=10.31, samples=50 write: IOPS=14, BW=239KiB/s (245kB/s)(6032KiB/25262msec); 0 zone resets clat (msec): min=11, max=166, avg=40.01, stdev=26.20 lat (msec): min=11, max=166, avg=40.01, stdev=26.19 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 49], 80.00th=[ 61], 90.00th=[ 77], 95.00th=[ 92], | 99.00th=[ 126], 99.50th=[ 159], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 95, max= 605, per=24.06%, avg=236.74, stdev=128.94, samples=50 iops : min= 5, max= 37, avg=14.14, stdev= 8.17, samples=50 lat (msec) : 10=9.38%, 20=31.25%, 50=37.76%, 100=19.40%, 250=2.21% cpu : usr=0.10%, sys=4.14%, ctx=1275, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180680: Wed Sep 2 04:05:00 2026 read: IOPS=14, BW=238KiB/s (244kB/s)(6032KiB/25355msec) clat (msec): min=5, max=138, avg=25.48, stdev=22.46 lat (msec): min=5, max=138, avg=25.48, stdev=22.46 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 35], 90.00th=[ 58], 95.00th=[ 78], | 99.00th=[ 118], 99.50th=[ 130], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 63, max= 763, per=25.06%, avg=234.58, stdev=145.66, samples=50 iops : min= 3, max= 47, avg=14.00, stdev= 9.17, samples=50 write: IOPS=15, BW=247KiB/s (253kB/s)(6256KiB/25355msec); 0 zone resets clat (msec): min=11, max=157, avg=40.19, stdev=26.51 lat (msec): min=11, max=157, avg=40.19, stdev=26.51 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 58], 90.00th=[ 80], 95.00th=[ 96], | 99.00th=[ 130], 99.50th=[ 142], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 63, max= 608, per=24.93%, avg=245.34, stdev=137.51, samples=50 iops : min= 3, max= 38, avg=14.68, stdev= 8.70, samples=50 lat (msec) : 10=8.72%, 20=32.16%, 50=39.32%, 100=16.93%, 250=2.86% cpu : usr=0.08%, sys=4.29%, ctx=1313, 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=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=936KiB/s (959kB/s), 227KiB/s-248KiB/s (232kB/s-254kB/s), io=23.4MiB (24.5MB), run=25262-25584msec WRITE: bw=985KiB/s (1009kB/s), 239KiB/s-258KiB/s (245kB/s-264kB/s), io=24.6MiB (25.8MB), run=25262-25584msec 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=180694: Wed Sep 2 04:05:10 2026 read: IOPS=2, BW=2813KiB/s (2881kB/s)(7168KiB/2548msec) clat (msec): min=2, max=296, avg=159.64, stdev=106.42 lat (msec): min=2, max=296, avg=159.64, stdev=106.42 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 86], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 144], 60.00th=[ 155], | 70.00th=[ 155], 80.00th=[ 296], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 4063, max= 5818, per=92.67%, avg=4940.50, stdev=1240.97, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=2009KiB/s (2058kB/s)(5120KiB/2548msec); 0 zone resets clat (msec): min=111, max=449, avg=280.32, stdev=136.71 lat (msec): min=111, max=449, avg=280.40, stdev=136.71 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 1939, max= 4096, per=35.64%, avg=2660.33, stdev=1243.33, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 4=8.33%, 100=8.33%, 250=41.67%, 500=41.67% cpu : usr=0.04%, sys=37.26%, ctx=661, 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=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=180695: Wed Sep 2 04:05:10 2026 read: IOPS=0, BW=533KiB/s (546kB/s)(2048KiB/3841msec) clat (usec): min=500, max=242743, avg=121621.93, stdev=171291.26 lat (usec): min=501, max=242745, avg=121623.64, stdev=171292.02 clat percentiles (usec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[242222], | 70.00th=[242222], 80.00th=[242222], 90.00th=[242222], 95.00th=[242222], | 99.00th=[242222], 99.50th=[242222], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 1889, max= 2048, per=36.93%, avg=1968.50, stdev=112.43, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2666KiB/s (2730kB/s)(10.0MiB/3841msec); 0 zone resets clat (msec): min=112, max=559, avg=354.54, stdev=150.83 lat (msec): min=112, max=559, avg=354.63, stdev=150.82 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 171], | 30.00th=[ 245], 40.00th=[ 262], 50.00th=[ 355], 60.00th=[ 405], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 498], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1946, max= 4096, per=36.27%, avg=2707.17, stdev=1069.86, samples=6 iops : min= 1, max= 4, avg= 2.00, stdev= 1.26, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=33.33%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=29.40%, ctx=292, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180696: Wed Sep 2 04:05:10 2026 read: IOPS=2, BW=2328KiB/s (2384kB/s)(6144KiB/2639msec) clat (usec): min=516, max=250619, avg=133334.35, stdev=110061.43 lat (usec): min=517, max=250620, avg=133335.39, stdev=110061.32 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 1004], | 30.00th=[ 1004], 40.00th=[137364], 50.00th=[137364], 60.00th=[181404], | 70.00th=[229639], 80.00th=[229639], 90.00th=[250610], 95.00th=[250610], | 99.00th=[250610], 99.50th=[250610], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 2031, max= 4096, per=62.65%, avg=3340.00, stdev=1138.16, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2328KiB/s (2384kB/s)(6144KiB/2639msec); 0 zone resets clat (msec): min=142, max=584, avg=303.47, stdev=198.61 lat (msec): min=142, max=584, avg=303.53, stdev=198.60 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 228], | 70.00th=[ 527], 80.00th=[ 527], 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= 1946, max= 3764, per=32.79%, avg=2447.25, stdev=878.97, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=58.33%, 500=8.33%, 750=16.67% cpu : usr=0.00%, sys=39.80%, ctx=251, 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=180697: Wed Sep 2 04:05:10 2026 read: IOPS=1, BW=1846KiB/s (1891kB/s)(5120KiB/2773msec) clat (usec): min=495, max=182866, avg=97201.41, stdev=84427.76 lat (usec): min=496, max=182866, avg=97202.44, stdev=84427.62 clat percentiles (usec): | 1.00th=[ 494], 5.00th=[ 494], 10.00th=[ 494], 20.00th=[ 494], | 30.00th=[ 12387], 40.00th=[ 12387], 50.00th=[139461], 60.00th=[139461], | 70.00th=[149947], 80.00th=[149947], 90.00th=[183501], 95.00th=[183501], | 99.00th=[183501], 99.50th=[183501], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2585KiB/s (2647kB/s)(7168KiB/2773msec); 0 zone resets clat (msec): min=129, max=663, avg=290.80, stdev=180.36 lat (msec): min=129, max=663, avg=290.87, stdev=180.35 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 132], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 271], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 317], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1935, max= 5840, per=53.01%, avg=3957.00, stdev=1956.21, samples=3 iops : min= 1, max= 5, avg= 3.33, stdev= 2.08, samples=3 lat (usec) : 500=8.33% lat (msec) : 20=8.33%, 250=50.00%, 500=25.00%, 750=8.33% cpu : usr=0.07%, sys=36.18%, ctx=258, 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=5332KiB/s (5460kB/s), 533KiB/s-2813KiB/s (546kB/s-2881kB/s), io=20.0MiB (20.0MB), run=2548-3841msec WRITE: bw=7465KiB/s (7644kB/s), 2009KiB/s-2666KiB/s (2058kB/s-2730kB/s), io=28.0MiB (29.4MB), run=2548-3841msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180699: Wed Sep 2 04:05:10 2026 read: IOPS=2, BW=2193KiB/s (2246kB/s)(7168KiB/3268msec) clat (msec): min=58, max=654, avg=211.20, stdev=237.44 lat (msec): min=58, max=654, avg=211.20, stdev=237.44 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 71], | 30.00th=[ 75], 40.00th=[ 75], 50.00th=[ 91], 60.00th=[ 92], | 70.00th=[ 92], 80.00th=[ 439], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1630, max= 4007, per=49.00%, avg=2902.00, stdev=1239.73, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 write: IOPS=1, BW=1567KiB/s (1604kB/s)(5120KiB/3268msec); 0 zone resets clat (msec): min=171, max=710, avg=340.26, stdev=214.35 lat (msec): min=171, max=710, avg=340.37, stdev=214.37 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 262], 60.00th=[ 262], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 2000, max= 4047, per=32.55%, avg=2698.33, stdev=1168.23, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=41.67%, 250=16.67%, 500=25.00%, 750=16.67% cpu : usr=0.03%, sys=12.73%, ctx=134, 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=180700: Wed Sep 2 04:05:10 2026 read: IOPS=0, BW=592KiB/s (606kB/s)(2048KiB/3458msec) clat (msec): min=74, max=108, avg=91.44, stdev=24.45 lat (msec): min=74, max=108, avg=91.44, stdev=24.45 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 74], | 30.00th=[ 74], 40.00th=[ 74], 50.00th=[ 74], 60.00th=[ 109], | 70.00th=[ 109], 80.00th=[ 109], 90.00th=[ 109], 95.00th=[ 109], | 99.00th=[ 109], 99.50th=[ 109], 99.90th=[ 109], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 1706, max= 2023, per=31.48%, avg=1864.50, stdev=224.15, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2961KiB/s (3032kB/s)(10.0MiB/3458msec); 0 zone resets clat (msec): min=72, max=531, avg=300.97, stdev=167.76 lat (msec): min=72, max=531, avg=301.05, stdev=167.75 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 78], | 30.00th=[ 108], 40.00th=[ 257], 50.00th=[ 296], 60.00th=[ 368], | 70.00th=[ 414], 80.00th=[ 439], 90.00th=[ 451], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 1961, max= 4096, per=33.98%, avg=2817.40, stdev=1127.23, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (msec) : 100=25.00%, 250=16.67%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=20.86%, 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=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=180701: Wed Sep 2 04:05:10 2026 read: IOPS=1, BW=1805KiB/s (1849kB/s)(6144KiB/3403msec) clat (msec): min=59, max=577, avg=249.05, stdev=182.61 lat (msec): min=59, max=577, avg=249.05, stdev=182.61 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 228], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 2000, max= 2048, per=34.08%, avg=2018.50, stdev=22.16, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 write: IOPS=1, BW=1805KiB/s (1849kB/s)(6144KiB/3403msec); 0 zone resets clat (msec): min=76, max=584, avg=306.02, stdev=177.99 lat (msec): min=76, max=586, avg=306.39, stdev=178.39 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 317], | 70.00th=[ 405], 80.00th=[ 405], 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= 1659, max= 3923, per=29.11%, avg=2413.25, stdev=1022.08, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 750=16.67% cpu : usr=0.09%, sys=6.44%, ctx=78, 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=180702: Wed Sep 2 04:05:10 2026 read: IOPS=1, BW=1688KiB/s (1728kB/s)(5120KiB/3034msec) clat (msec): min=70, max=191, avg=100.21, stdev=51.78 lat (msec): min=70, max=191, avg=100.21, stdev=51.78 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 71], | 30.00th=[ 72], 40.00th=[ 72], 50.00th=[ 75], 60.00th=[ 75], | 70.00th=[ 93], 80.00th=[ 93], 90.00th=[ 192], 95.00th=[ 192], | 99.00th=[ 192], 99.50th=[ 192], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2363KiB/s (2419kB/s)(7168KiB/3034msec); 0 zone resets clat (msec): min=117, max=552, avg=317.37, stdev=153.13 lat (msec): min=117, max=552, avg=317.45, stdev=153.12 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 146], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 338], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 435], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1610, max= 2023, per=23.15%, avg=1919.40, stdev=174.41, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=33.33%, 250=25.00%, 500=33.33%, 750=8.33% cpu : usr=0.07%, sys=15.40%, ctx=137, 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=5922KiB/s (6065kB/s), 592KiB/s-2193KiB/s (606kB/s-2246kB/s), io=20.0MiB (20.0MB), run=3034-3458msec WRITE: bw=8291KiB/s (8490kB/s), 1567KiB/s-2961KiB/s (1604kB/s-3032kB/s), io=28.0MiB (29.4MB), run=3034-3458msec 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=180708: Wed Sep 2 04:05:19 2026 read: IOPS=1, BW=7912KiB/s (8102kB/s)(12.0MiB/1553msec) clat (msec): min=372, max=721, avg=511.85, stdev=184.88 lat (msec): min=372, max=721, avg=511.85, stdev=184.88 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 443], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 5512, max= 8126, per=100.00%, avg=6819.00, stdev=1848.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=33.51%, ctx=764, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180710: Wed Sep 2 04:05:19 2026 read: IOPS=0, BW=1636KiB/s (1675kB/s)(4096KiB/2504msec) clat (nsec): min=433669k, max=433669k, avg=433668560.00, stdev= 0.00 lat (nsec): min=433671k, max=433671k, avg=433671020.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 435], 10.00th=[ 435], 20.00th=[ 435], | 30.00th=[ 435], 40.00th=[ 435], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 435], 90.00th=[ 435], 95.00th=[ 435], | 99.00th=[ 435], 99.50th=[ 435], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 7249, max= 7249, per=100.00%, avg=7249.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3272KiB/s (3350kB/s)(8192KiB/2504msec); 0 zone resets clat (msec): min=740, max=1300, avg=1020.55, stdev=395.38 lat (msec): min=741, max=1300, avg=1021.04, stdev=395.25 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 1301], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7861, max= 7861, per=60.07%, avg=7861.00, 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=0.04%, sys=15.46%, ctx=320, 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=180711: Wed Sep 2 04:05:19 2026 write: IOPS=1, BW=5454KiB/s (5585kB/s)(12.0MiB/2253msec); 0 zone resets clat (msec): min=126, max=1107, avg=744.51, stdev=537.58 lat (msec): min=127, max=1107, avg=744.78, stdev=537.68 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 128], | 30.00th=[ 128], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8126, max= 8126, per=62.10%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=8.21%, ctx=61, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180712: Wed Sep 2 04:05:19 2026 write: IOPS=1, BW=6282KiB/s (6433kB/s)(12.0MiB/1956msec); 0 zone resets clat (msec): min=253, max=1183, avg=645.88, stdev=481.72 lat (msec): min=254, max=1183, avg=646.32, stdev=481.48 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 253], 10.00th=[ 253], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 502], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7627, max= 7627, per=58.28%, avg=7627.00, 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=14.68%, ctx=153, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6543KiB/s (6700kB/s), 1636KiB/s-7912KiB/s (1675kB/s-8102kB/s), io=16.0MiB (16.8MB), run=1553-2504msec WRITE: bw=12.8MiB/s (13.4MB/s), 3272KiB/s-6282KiB/s (3350kB/s-6433kB/s), io=32.0MiB (33.6MB), run=1956-2504msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180713: Wed Sep 2 04:05:19 2026 read: IOPS=1, BW=5053KiB/s (5174kB/s)(12.0MiB/2432msec) clat (msec): min=210, max=1488, avg=788.17, stdev=647.68 lat (msec): min=210, max=1488, avg=788.18, stdev=647.68 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 7907, max= 8143, per=100.00%, avg=8025.00, stdev=166.88, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.24%, ctx=146, 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=180714: Wed Sep 2 04:05:19 2026 read: IOPS=0, BW=1638KiB/s (1677kB/s)(4096KiB/2501msec) clat (nsec): min=1321.0M, max=1321.0M, avg=1321015689.00, stdev= 0.00 lat (nsec): min=1321.0M, max=1321.0M, avg=1321017928.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1318], 5.00th=[ 1318], 10.00th=[ 1318], 20.00th=[ 1318], | 30.00th=[ 1318], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 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=3275KiB/s (3354kB/s)(8192KiB/2501msec); 0 zone resets clat (msec): min=379, max=739, avg=559.48, stdev=254.47 lat (msec): min=379, max=739, avg=559.79, stdev=254.33 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 743], | 70.00th=[ 743], 80.00th=[ 743], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7907, max= 7907, per=60.35%, avg=7907.00, 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=9.20%, ctx=59, 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=180715: Wed Sep 2 04:05:19 2026 write: IOPS=1, BW=6253KiB/s (6404kB/s)(12.0MiB/1965msec); 0 zone resets clat (msec): min=449, max=827, avg=649.35, stdev=190.01 lat (msec): min=449, max=827, avg=649.83, stdev=190.03 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 451], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7953, max= 8143, per=61.43%, avg=8048.00, stdev=134.35, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=15.94%, ctx=148, 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=180716: Wed Sep 2 04:05:19 2026 write: IOPS=1, BW=5838KiB/s (5978kB/s)(12.0MiB/2105msec); 0 zone resets clat (msec): min=222, max=938, avg=683.20, stdev=399.89 lat (msec): min=223, max=938, avg=683.78, stdev=399.45 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8143, max= 8143, per=62.16%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.05%, sys=12.54%, 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=6551KiB/s (6708kB/s), 1638KiB/s-5053KiB/s (1677kB/s-5174kB/s), io=16.0MiB (16.8MB), run=2432-2501msec WRITE: bw=12.8MiB/s (13.4MB/s), 3275KiB/s-6253KiB/s (3354kB/s-6404kB/s), io=32.0MiB (33.6MB), run=1965-2501msec