== sanity test 398b: DIO and buffer IO race ============== 13:01:54 (1786467714) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.78793 s, 18.1 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=191192: Tue Aug 11 13:03:02 2026 read: IOPS=24, BW=99.3KiB/s (102kB/s)(5992KiB/60371msec) clat (usec): min=33, max=125532, avg=22017.88, stdev=13071.87 lat (usec): min=33, max=125533, avg=22018.87, stdev=13071.64 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 6783], 10.00th=[ 9372], 20.00th=[ 12256], | 30.00th=[ 14746], 40.00th=[ 17171], 50.00th=[ 19530], 60.00th=[ 22414], | 70.00th=[ 25822], 80.00th=[ 30540], 90.00th=[ 38536], 95.00th=[ 44303], | 99.00th=[ 67634], 99.50th=[ 72877], 99.90th=[112722], 99.95th=[125305], | 99.99th=[125305] bw ( KiB/s): min= 15, max= 160, per=25.02%, avg=99.07, stdev=27.36, samples=120 iops : min= 3, max= 40, avg=24.29, stdev= 6.87, samples=120 write: IOPS=26, BW=104KiB/s (107kB/s)(6296KiB/60371msec); 0 zone resets clat (usec): min=734, max=729099, avg=17219.96, stdev=23030.04 lat (usec): min=734, max=729101, avg=17221.08, stdev=23030.08 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1483], 10.00th=[ 2245], 20.00th=[ 3359], | 30.00th=[ 5604], 40.00th=[ 10159], 50.00th=[ 13566], 60.00th=[ 17433], | 70.00th=[ 21890], 80.00th=[ 28181], 90.00th=[ 37487], 95.00th=[ 44303], | 99.00th=[ 63177], 99.50th=[ 73925], 99.90th=[102237], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 15, max= 175, per=25.34%, avg=104.90, stdev=29.05, samples=119 iops : min= 3, max= 43, avg=25.75, stdev= 7.28, samples=119 lat (usec) : 50=0.29%, 100=1.17%, 250=0.39%, 500=0.07%, 750=0.16% lat (usec) : 1000=0.23% lat (msec) : 2=4.17%, 4=7.81%, 10=12.04%, 20=32.81%, 50=37.73% lat (msec) : 100=2.99%, 250=0.10%, 750=0.03% cpu : usr=0.11%, sys=14.58%, ctx=7905, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191193: Tue Aug 11 13:03:02 2026 read: IOPS=24, BW=97.0KiB/s (100kB/s)(5940KiB/60632msec) clat (usec): min=35, max=124339, avg=21843.15, stdev=12303.59 lat (usec): min=36, max=124340, avg=21844.09, stdev=12303.53 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 7898], 10.00th=[ 10028], 20.00th=[ 12256], | 30.00th=[ 14615], 40.00th=[ 16712], 50.00th=[ 19268], 60.00th=[ 22938], | 70.00th=[ 26084], 80.00th=[ 29754], 90.00th=[ 36963], 95.00th=[ 43779], | 99.00th=[ 62129], 99.50th=[ 68682], 99.90th=[107480], 99.95th=[124257], | 99.99th=[124257] bw ( KiB/s): min= 6, max= 151, per=24.60%, avg=97.42, stdev=25.83, samples=120 iops : min= 1, max= 37, avg=23.88, stdev= 6.50, samples=120 write: IOPS=26, BW=105KiB/s (107kB/s)(6348KiB/60632msec); 0 zone resets clat (usec): min=784, max=743525, avg=17592.30, stdev=23389.58 lat (usec): min=785, max=743527, avg=17595.02, stdev=23389.46 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1565], 10.00th=[ 2114], 20.00th=[ 3392], | 30.00th=[ 5604], 40.00th=[ 10814], 50.00th=[ 14615], 60.00th=[ 17957], | 70.00th=[ 22676], 80.00th=[ 28443], 90.00th=[ 36963], 95.00th=[ 44303], | 99.00th=[ 63701], 99.50th=[ 76022], 99.90th=[110625], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 15, max= 200, per=25.07%, avg=103.81, stdev=31.44, samples=120 iops : min= 3, max= 50, avg=25.47, stdev= 7.96, samples=120 lat (usec) : 50=0.33%, 100=0.81%, 250=0.26%, 750=0.03%, 1000=0.26% lat (msec) : 2=4.46%, 4=7.45%, 10=11.20%, 20=34.24%, 50=38.22% lat (msec) : 100=2.60%, 250=0.10%, 750=0.03% cpu : usr=0.10%, sys=14.69%, ctx=7909, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191194: Tue Aug 11 13:03:02 2026 read: IOPS=25, BW=100KiB/s (103kB/s)(6028KiB/60123msec) clat (usec): min=29, max=138046, avg=21561.08, stdev=12839.03 lat (usec): min=30, max=138047, avg=21562.05, stdev=12839.03 clat percentiles (usec): | 1.00th=[ 73], 5.00th=[ 7242], 10.00th=[ 9634], 20.00th=[ 12256], | 30.00th=[ 14353], 40.00th=[ 16581], 50.00th=[ 19006], 60.00th=[ 21890], | 70.00th=[ 25560], 80.00th=[ 29492], 90.00th=[ 35914], 95.00th=[ 42730], | 99.00th=[ 66847], 99.50th=[ 81265], 99.90th=[109577], 99.95th=[137364], | 99.99th=[137364] bw ( KiB/s): min= 13, max= 160, per=25.25%, avg=99.98, stdev=26.47, samples=119 iops : min= 3, max= 40, avg=24.51, stdev= 6.68, samples=119 write: IOPS=26, BW=104KiB/s (107kB/s)(6260KiB/60123msec); 0 zone resets clat (usec): min=785, max=793928, avg=17477.99, stdev=24739.11 lat (usec): min=785, max=793929, avg=17480.06, stdev=24738.58 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1582], 10.00th=[ 2147], 20.00th=[ 3392], | 30.00th=[ 5538], 40.00th=[ 10028], 50.00th=[ 13829], 60.00th=[ 17433], | 70.00th=[ 21890], 80.00th=[ 27919], 90.00th=[ 37487], 95.00th=[ 45876], | 99.00th=[ 65799], 99.50th=[ 76022], 99.90th=[127402], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 7, max= 176, per=25.02%, avg=103.57, stdev=30.32, samples=119 iops : min= 1, max= 44, avg=25.42, stdev= 7.60, samples=119 lat (usec) : 50=0.20%, 100=0.85%, 250=0.65%, 1000=0.20% lat (msec) : 2=4.20%, 4=8.17%, 10=11.69%, 20=33.89%, 50=36.78% lat (msec) : 100=3.26%, 250=0.10%, 1000=0.03% cpu : usr=0.10%, sys=14.77%, ctx=7868, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191195: Tue Aug 11 13:03:02 2026 read: IOPS=25, BW=101KiB/s (103kB/s)(6052KiB/60169msec) clat (usec): min=33, max=760225, avg=21969.67, stdev=22519.64 lat (usec): min=33, max=760226, avg=21973.08, stdev=22518.59 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 7439], 10.00th=[ 9372], 20.00th=[ 11994], | 30.00th=[ 14222], 40.00th=[ 16450], 50.00th=[ 19268], 60.00th=[ 22414], | 70.00th=[ 26084], 80.00th=[ 30016], 90.00th=[ 35914], 95.00th=[ 43254], | 99.00th=[ 58459], 99.50th=[ 68682], 99.90th=[116917], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 13, max= 151, per=25.31%, avg=100.24, stdev=24.56, samples=119 iops : min= 3, max= 37, avg=24.58, stdev= 6.19, samples=119 write: IOPS=25, BW=104KiB/s (106kB/s)(6236KiB/60169msec); 0 zone resets clat (usec): min=818, max=115430, avg=17085.48, stdev=15325.29 lat (usec): min=819, max=115431, avg=17086.67, stdev=15325.23 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1647], 10.00th=[ 2245], 20.00th=[ 3425], | 30.00th=[ 5604], 40.00th=[ 10159], 50.00th=[ 13960], 60.00th=[ 17433], | 70.00th=[ 21365], 80.00th=[ 27919], 90.00th=[ 36963], 95.00th=[ 45351], | 99.00th=[ 70779], 99.50th=[ 79168], 99.90th=[111674], 99.95th=[115868], | 99.99th=[115868] bw ( KiB/s): min= 23, max= 168, per=24.96%, avg=103.34, stdev=28.16, samples=119 iops : min= 5, max= 42, avg=25.34, stdev= 7.08, samples=119 lat (usec) : 50=0.26%, 100=0.91%, 250=0.39%, 750=0.03%, 1000=0.26% lat (msec) : 2=4.00%, 4=8.01%, 10=11.98%, 20=34.24%, 50=36.75% lat (msec) : 100=2.96%, 250=0.16%, 1000=0.03% cpu : usr=0.13%, sys=14.74%, ctx=8004, 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=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=396KiB/s (406kB/s), 97.0KiB/s-101KiB/s (100kB/s-103kB/s), io=23.4MiB (24.6MB), run=60123-60632msec WRITE: bw=415KiB/s (425kB/s), 104KiB/s-105KiB/s (106kB/s-107kB/s), io=24.6MiB (25.7MB), run=60123-60632msec rand-rw: (groupid=0, jobs=1): err= 0: pid=191196: Tue Aug 11 13:03:19 2026 read: IOPS=19, BW=77.6KiB/s (79.5kB/s)(5992KiB/77195msec) clat (msec): min=3, max=816, avg=20.52, stdev=26.07 lat (msec): min=3, max=816, avg=20.52, stdev=26.07 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 30], 90.00th=[ 44], 95.00th=[ 55], | 99.00th=[ 75], 99.50th=[ 86], 99.90th=[ 138], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 15, max= 215, per=25.18%, avg=77.56, stdev=42.87, samples=152 iops : min= 3, max= 53, avg=18.89, stdev=10.75, samples=152 write: IOPS=20, BW=81.6KiB/s (83.5kB/s)(6296KiB/77195msec); 0 zone resets clat (msec): min=5, max=163, avg=29.35, stdev=17.90 lat (msec): min=5, max=163, avg=29.35, stdev=17.90 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 42], 90.00th=[ 55], 95.00th=[ 65], | 99.00th=[ 89], 99.50th=[ 101], 99.90th=[ 142], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 15, max= 205, per=25.40%, avg=82.03, stdev=40.44, samples=151 iops : min= 3, max= 51, avg=20.02, stdev=10.16, samples=151 lat (msec) : 4=0.16%, 10=14.49%, 20=39.19%, 50=36.65%, 100=8.98% lat (msec) : 250=0.49%, 1000=0.03% cpu : usr=0.09%, sys=6.45%, ctx=5388, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191197: Tue Aug 11 13:03:19 2026 read: IOPS=19, BW=76.9KiB/s (78.7kB/s)(5940KiB/77283msec) clat (msec): min=3, max=766, avg=20.71, stdev=25.55 lat (msec): min=3, max=766, avg=20.71, stdev=25.55 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 28], 90.00th=[ 44], 95.00th=[ 59], | 99.00th=[ 83], 99.50th=[ 87], 99.90th=[ 136], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 232, per=24.97%, avg=76.92, stdev=44.04, samples=152 iops : min= 1, max= 58, avg=18.74, stdev=11.04, samples=152 write: IOPS=20, BW=82.1KiB/s (84.1kB/s)(6348KiB/77283msec); 0 zone resets clat (msec): min=6, max=153, avg=29.16, stdev=18.16 lat (msec): min=6, max=153, avg=29.16, stdev=18.16 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 42], 90.00th=[ 54], 95.00th=[ 65], | 99.00th=[ 93], 99.50th=[ 112], 99.90th=[ 142], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 15, max= 205, per=25.36%, avg=81.91, stdev=41.04, samples=152 iops : min= 3, max= 51, avg=19.99, stdev=10.31, samples=152 lat (msec) : 4=0.16%, 10=13.90%, 20=40.23%, 50=35.84%, 100=9.31% lat (msec) : 250=0.52%, 1000=0.03% cpu : usr=0.11%, sys=6.28%, ctx=5387, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191198: Tue Aug 11 13:03:19 2026 read: IOPS=19, BW=77.7KiB/s (79.6kB/s)(6028KiB/77565msec) clat (msec): min=3, max=139, avg=20.48, stdev=16.70 lat (msec): min=3, max=139, avg=20.48, stdev=16.70 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 31], 90.00th=[ 43], 95.00th=[ 55], | 99.00th=[ 78], 99.50th=[ 99], 99.90th=[ 133], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 15, max= 216, per=25.39%, avg=78.20, stdev=42.91, samples=152 iops : min= 3, max= 54, avg=19.06, stdev=10.79, samples=152 write: IOPS=20, BW=80.7KiB/s (82.6kB/s)(6260KiB/77565msec); 0 zone resets clat (msec): min=6, max=771, avg=29.68, stdev=26.05 lat (msec): min=6, max=771, avg=29.68, stdev=26.05 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 42], 90.00th=[ 56], 95.00th=[ 67], | 99.00th=[ 85], 99.50th=[ 96], 99.90th=[ 157], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 23, max= 199, per=24.92%, avg=80.50, stdev=40.84, samples=153 iops : min= 5, max= 49, avg=19.63, stdev=10.26, samples=153 lat (msec) : 4=0.13%, 10=14.81%, 20=37.47%, 50=37.34%, 100=9.90% lat (msec) : 250=0.33%, 1000=0.03% cpu : usr=0.10%, sys=6.28%, ctx=5397, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191199: Tue Aug 11 13:03:19 2026 read: IOPS=19, BW=77.8KiB/s (79.7kB/s)(6052KiB/77766msec) clat (msec): min=3, max=138, avg=20.65, stdev=17.42 lat (msec): min=3, max=138, avg=20.65, stdev=17.42 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 30], 90.00th=[ 46], 95.00th=[ 59], | 99.00th=[ 84], 99.50th=[ 94], 99.90th=[ 117], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 8, max= 232, per=25.20%, avg=77.61, stdev=43.33, samples=152 iops : min= 2, max= 58, avg=18.91, stdev=10.85, samples=152 write: IOPS=20, BW=80.2KiB/s (82.1kB/s)(6236KiB/77766msec); 0 zone resets clat (msec): min=7, max=772, avg=29.68, stdev=26.48 lat (msec): min=7, max=772, avg=29.69, stdev=26.48 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 42], 90.00th=[ 55], 95.00th=[ 67], | 99.00th=[ 92], 99.50th=[ 110], 99.90th=[ 157], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 15, max= 200, per=24.68%, avg=79.71, stdev=42.72, samples=153 iops : min= 3, max= 50, avg=19.44, stdev=10.73, samples=153 lat (msec) : 4=0.10%, 10=15.17%, 20=38.05%, 50=36.00%, 100=10.12% lat (msec) : 250=0.52%, 1000=0.03% cpu : usr=0.09%, sys=6.37%, ctx=5443, 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=309KiB/s (316kB/s), 76.9KiB/s-77.8KiB/s (78.7kB/s-79.7kB/s), io=23.4MiB (24.6MB), run=77195-77766msec WRITE: bw=323KiB/s (331kB/s), 80.2KiB/s-82.1KiB/s (82.1kB/s-84.1kB/s), io=24.6MiB (25.7MB), run=77195-77766msec 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=191226: Tue Aug 11 13:03:41 2026 read: IOPS=21, BW=345KiB/s (353kB/s)(5920KiB/17179msec) clat (usec): min=37, max=95732, avg=23772.38, stdev=13926.35 lat (usec): min=39, max=95733, avg=23774.47, stdev=13925.52 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 105], 10.00th=[ 8586], 20.00th=[12649], | 30.00th=[16319], 40.00th=[19006], 50.00th=[21890], 60.00th=[25822], | 70.00th=[29754], 80.00th=[33817], 90.00th=[40109], 95.00th=[45351], | 99.00th=[69731], 99.50th=[86508], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 126, max= 672, per=24.91%, avg=345.21, stdev=123.14, samples=34 iops : min= 7, max= 42, avg=20.94, stdev= 7.82, samples=34 write: IOPS=23, BW=371KiB/s (380kB/s)(6368KiB/17179msec); 0 zone resets clat (usec): min=1162, max=158498, avg=20786.80, stdev=18692.31 lat (usec): min=1163, max=158501, avg=20790.97, stdev=18690.47 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 2114], 10.00th=[ 3097], 20.00th=[ 4555], | 30.00th=[ 7635], 40.00th=[ 11863], 50.00th=[ 15533], 60.00th=[ 19006], | 70.00th=[ 26084], 80.00th=[ 34866], 90.00th=[ 46924], 95.00th=[ 54789], | 99.00th=[ 81265], 99.50th=[ 87557], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 128, max= 640, per=25.42%, avg=370.62, stdev=102.53, samples=34 iops : min= 8, max= 40, avg=22.56, stdev= 6.45, samples=34 lat (usec) : 50=0.13%, 100=2.08%, 250=1.43%, 500=0.13% lat (msec) : 2=2.08%, 4=6.12%, 10=11.20%, 20=29.04%, 50=42.06% lat (msec) : 100=5.60%, 250=0.13% cpu : usr=0.08%, sys=14.57%, ctx=2163, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191227: Tue Aug 11 13:03:41 2026 read: IOPS=20, BW=332KiB/s (340kB/s)(5744KiB/17278msec) clat (usec): min=47, max=85924, avg=24866.01, stdev=14020.29 lat (usec): min=47, max=85924, avg=24867.34, stdev=14020.02 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 7898], 10.00th=[11076], 20.00th=[14484], | 30.00th=[17171], 40.00th=[19530], 50.00th=[22152], 60.00th=[25822], | 70.00th=[29754], 80.00th=[34341], 90.00th=[41681], 95.00th=[52691], | 99.00th=[78119], 99.50th=[83362], 99.90th=[85459], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 107, max= 479, per=23.89%, avg=331.06, stdev=87.54, samples=34 iops : min= 6, max= 29, avg=20.06, stdev= 5.54, samples=34 write: IOPS=23, BW=379KiB/s (388kB/s)(6544KiB/17278msec); 0 zone resets clat (usec): min=1071, max=80915, avg=20060.36, stdev=15804.30 lat (usec): min=1071, max=80918, avg=20063.22, stdev=15803.66 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2737], 10.00th=[ 3621], 20.00th=[ 5866], | 30.00th=[ 8848], 40.00th=[13435], 50.00th=[16450], 60.00th=[19792], | 70.00th=[23987], 80.00th=[32637], 90.00th=[43254], 95.00th=[52167], | 99.00th=[68682], 99.50th=[76022], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 159, max= 672, per=25.86%, avg=377.06, stdev=113.33, samples=34 iops : min= 9, max= 42, avg=22.94, stdev= 7.20, samples=34 lat (usec) : 50=0.26%, 100=1.30%, 250=0.52% lat (msec) : 2=1.04%, 4=5.21%, 10=12.89%, 20=30.73%, 50=42.32% lat (msec) : 100=5.73% cpu : usr=0.14%, sys=15.06%, ctx=2217, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191228: Tue Aug 11 13:03:41 2026 read: IOPS=22, BW=366KiB/s (375kB/s)(6256KiB/17083msec) clat (usec): min=40, max=96891, avg=24839.36, stdev=14635.41 lat (usec): min=40, max=96894, avg=24840.45, stdev=14635.48 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 118], 10.00th=[10945], 20.00th=[14484], | 30.00th=[16909], 40.00th=[20055], 50.00th=[23200], 60.00th=[25560], | 70.00th=[29230], 80.00th=[34866], 90.00th=[42730], 95.00th=[50070], | 99.00th=[82314], 99.50th=[85459], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 126, max= 544, per=26.40%, avg=365.91, stdev=99.36, samples=33 iops : min= 7, max= 34, avg=22.21, stdev= 6.23, samples=33 write: IOPS=22, BW=353KiB/s (362kB/s)(6032KiB/17083msec); 0 zone resets clat (usec): min=1136, max=108339, avg=19407.62, stdev=16559.05 lat (usec): min=1137, max=108342, avg=19409.66, stdev=16558.91 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2114], 10.00th=[ 2769], 20.00th=[ 5014], | 30.00th=[ 8029], 40.00th=[ 11863], 50.00th=[ 15139], 60.00th=[ 19006], | 70.00th=[ 23987], 80.00th=[ 31327], 90.00th=[ 42730], 95.00th=[ 51643], | 99.00th=[ 73925], 99.50th=[ 89654], 99.90th=[108528], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 159, max= 542, per=23.81%, avg=347.09, stdev=94.21, samples=33 iops : min= 9, max= 33, avg=21.06, stdev= 5.79, samples=33 lat (usec) : 50=0.26%, 100=1.82%, 250=1.30%, 500=0.13% lat (msec) : 2=1.82%, 4=5.86%, 10=9.90%, 20=29.69%, 50=44.14% lat (msec) : 100=4.95%, 250=0.13% cpu : usr=0.11%, sys=14.84%, ctx=2234, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191229: Tue Aug 11 13:03:41 2026 read: IOPS=22, BW=361KiB/s (369kB/s)(6032KiB/16725msec) clat (usec): min=40, max=149364, avg=23055.91, stdev=15606.49 lat (usec): min=41, max=149365, avg=23056.75, stdev=15606.53 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 79], 10.00th=[ 2147], 20.00th=[ 13173], | 30.00th=[ 16319], 40.00th=[ 18220], 50.00th=[ 20579], 60.00th=[ 23725], | 70.00th=[ 26870], 80.00th=[ 32900], 90.00th=[ 42206], 95.00th=[ 49021], | 99.00th=[ 80217], 99.50th=[ 98042], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 192, max= 605, per=25.89%, avg=358.79, stdev=104.14, samples=33 iops : min= 12, max= 37, avg=21.79, stdev= 6.49, samples=33 write: IOPS=23, BW=374KiB/s (383kB/s)(6256KiB/16725msec); 0 zone resets clat (usec): min=1266, max=93986, avg=20145.58, stdev=16896.14 lat (usec): min=1267, max=93988, avg=20162.96, stdev=16883.34 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2311], 10.00th=[ 3195], 20.00th=[ 4817], | 30.00th=[ 7767], 40.00th=[11994], 50.00th=[15533], 60.00th=[19530], | 70.00th=[26608], 80.00th=[34341], 90.00th=[43254], 95.00th=[50594], | 99.00th=[71828], 99.50th=[90702], 99.90th=[93848], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 95, max= 669, per=25.78%, avg=375.85, stdev=123.14, samples=33 iops : min= 5, max= 41, avg=22.85, stdev= 7.85, samples=33 lat (usec) : 50=0.39%, 100=3.26%, 250=1.04%, 500=0.13% lat (msec) : 2=1.69%, 4=6.12%, 10=11.07%, 20=29.82%, 50=40.62% lat (msec) : 100=5.73%, 250=0.13% cpu : usr=0.08%, sys=14.73%, ctx=2088, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1386KiB/s (1420kB/s), 332KiB/s-366KiB/s (340kB/s-375kB/s), io=23.4MiB (24.5MB), run=16725-17278msec WRITE: bw=1459KiB/s (1494kB/s), 353KiB/s-379KiB/s (362kB/s-388kB/s), io=24.6MiB (25.8MB), run=16725-17278msec rand-rw: (groupid=0, jobs=1): err= 0: pid=191230: Tue Aug 11 13:03:45 2026 read: IOPS=17, BW=278KiB/s (284kB/s)(5920KiB/21318msec) clat (msec): min=4, max=113, avg=22.46, stdev=18.24 lat (msec): min=4, max=113, avg=22.46, stdev=18.24 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 25], 80.00th=[ 35], 90.00th=[ 52], 95.00th=[ 63], | 99.00th=[ 86], 99.50th=[ 88], 99.90th=[ 113], 99.95th=[ 113], | 99.99th=[ 113] bw ( KiB/s): min= 96, max= 992, per=24.79%, avg=276.12, stdev=182.21, samples=42 iops : min= 6, max= 62, avg=16.64, stdev=11.54, samples=42 write: IOPS=18, BW=299KiB/s (306kB/s)(6368KiB/21318msec); 0 zone resets clat (msec): min=7, max=150, avg=32.37, stdev=22.55 lat (msec): min=7, max=150, avg=32.37, stdev=22.55 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 48], 90.00th=[ 65], 95.00th=[ 82], | 99.00th=[ 95], 99.50th=[ 129], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 95, max= 888, per=25.52%, avg=299.07, stdev=179.61, samples=42 iops : min= 5, max= 55, avg=18.07, stdev=11.38, samples=42 lat (msec) : 10=14.71%, 20=35.16%, 50=35.42%, 100=14.19%, 250=0.52% cpu : usr=0.08%, sys=6.83%, ctx=1423, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191231: Tue Aug 11 13:03:45 2026 read: IOPS=16, BW=267KiB/s (274kB/s)(5744KiB/21487msec) clat (msec): min=4, max=109, avg=23.73, stdev=20.49 lat (msec): min=4, max=109, avg=23.73, stdev=20.49 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 25], 80.00th=[ 39], 90.00th=[ 56], 95.00th=[ 68], | 99.00th=[ 99], 99.50th=[ 110], 99.90th=[ 110], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 63, max= 864, per=24.43%, avg=272.10, stdev=186.20, samples=41 iops : min= 3, max= 54, avg=16.39, stdev=11.78, samples=41 write: IOPS=19, BW=305KiB/s (312kB/s)(6544KiB/21487msec); 0 zone resets clat (msec): min=7, max=205, avg=31.47, stdev=23.91 lat (msec): min=7, max=205, avg=31.47, stdev=23.91 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 38], 80.00th=[ 47], 90.00th=[ 61], 95.00th=[ 79], | 99.00th=[ 116], 99.50th=[ 123], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 95, max= 862, per=25.58%, avg=299.79, stdev=189.63, samples=42 iops : min= 5, max= 53, avg=18.12, stdev=11.98, samples=42 lat (msec) : 10=15.36%, 20=36.72%, 50=32.42%, 100=14.06%, 250=1.43% cpu : usr=0.05%, sys=6.54%, ctx=1368, 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=191232: Tue Aug 11 13:03:45 2026 read: IOPS=18, BW=294KiB/s (301kB/s)(6256KiB/21296msec) clat (msec): min=3, max=113, avg=23.33, stdev=18.80 lat (msec): min=3, max=113, avg=23.33, stdev=18.80 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 37], 90.00th=[ 51], 95.00th=[ 67], | 99.00th=[ 88], 99.50th=[ 90], 99.90th=[ 113], 99.95th=[ 113], | 99.99th=[ 113] bw ( KiB/s): min= 95, max= 800, per=26.49%, avg=295.10, stdev=199.85, samples=42 iops : min= 5, max= 50, avg=17.83, stdev=12.58, samples=42 write: IOPS=17, BW=283KiB/s (290kB/s)(6032KiB/21296msec); 0 zone resets clat (msec): min=5, max=204, avg=32.14, stdev=23.67 lat (msec): min=5, max=204, avg=32.14, stdev=23.67 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 61], 95.00th=[ 82], | 99.00th=[ 121], 99.50th=[ 132], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 32, max= 864, per=24.04%, avg=281.76, stdev=180.36, samples=42 iops : min= 2, max= 54, avg=17.00, stdev=11.41, samples=42 lat (msec) : 4=0.26%, 10=15.49%, 20=33.07%, 50=36.07%, 100=14.19% lat (msec) : 250=0.91% cpu : usr=0.11%, sys=6.80%, ctx=1405, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191233: Tue Aug 11 13:03:45 2026 read: IOPS=17, BW=283KiB/s (290kB/s)(6032KiB/21306msec) clat (msec): min=4, max=105, avg=23.38, stdev=20.03 lat (msec): min=4, max=105, avg=23.38, stdev=20.03 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 25], 80.00th=[ 37], 90.00th=[ 54], 95.00th=[ 70], | 99.00th=[ 89], 99.50th=[ 106], 99.90th=[ 106], 99.95th=[ 106], | 99.99th=[ 106] bw ( KiB/s): min= 95, max= 894, per=25.20%, avg=280.74, stdev=184.86, samples=42 iops : min= 5, max= 55, avg=16.93, stdev=11.67, samples=42 write: IOPS=18, BW=294KiB/s (301kB/s)(6256KiB/21306msec); 0 zone resets clat (msec): min=6, max=147, avg=31.67, stdev=22.55 lat (msec): min=6, max=147, avg=31.67, stdev=22.55 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 47], 90.00th=[ 63], 95.00th=[ 78], | 99.00th=[ 111], 99.50th=[ 130], 99.90th=[ 148], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 96, max= 1024, per=24.98%, avg=292.79, stdev=190.78, samples=42 iops : min= 6, max= 64, avg=17.69, stdev=12.06, samples=42 lat (msec) : 10=15.89%, 20=34.51%, 50=35.16%, 100=13.41%, 250=1.04% cpu : usr=0.08%, sys=6.80%, ctx=1472, 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=1115KiB/s (1141kB/s), 267KiB/s-294KiB/s (274kB/s-301kB/s), io=23.4MiB (24.5MB), run=21296-21487msec WRITE: bw=1173KiB/s (1201kB/s), 283KiB/s-305KiB/s (290kB/s-312kB/s), io=24.6MiB (25.8MB), run=21296-21487msec 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=191241: Tue Aug 11 13:03:56 2026 read: IOPS=1, BW=1888KiB/s (1933kB/s)(7168KiB/3797msec) clat (msec): min=41, max=1151, avg=321.49, stdev=397.13 lat (msec): min=41, max=1151, avg=321.49, stdev=397.13 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 66], | 30.00th=[ 77], 40.00th=[ 77], 50.00th=[ 125], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 435], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 1892, max= 5361, per=68.70%, avg=2836.00, stdev=1684.89, samples=4 iops : min= 1, max= 5, avg= 2.25, stdev= 1.89, samples=4 write: IOPS=1, BW=1348KiB/s (1381kB/s)(5120KiB/3797msec); 0 zone resets clat (msec): min=107, max=581, avg=302.10, stdev=199.51 lat (msec): min=107, max=581, avg=302.21, stdev=199.52 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 108], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 199], 60.00th=[ 199], | 70.00th=[ 439], 80.00th=[ 439], 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= 1787, max= 4096, per=45.75%, avg=2643.67, stdev=1264.51, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 50=8.33%, 100=16.67%, 250=33.33%, 500=25.00%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.08%, sys=14.01%, ctx=121, 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=191242: Tue Aug 11 13:03:56 2026 read: IOPS=0, BW=413KiB/s (423kB/s)(2048KiB/4961msec) clat (usec): min=74975, max=99907, avg=87441.72, stdev=17629.28 lat (usec): min=74978, max=99908, avg=87443.38, stdev=17628.50 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 75], | 30.00th=[ 75], 40.00th=[ 75], 50.00th=[ 75], 60.00th=[ 101], | 70.00th=[ 101], 80.00th=[ 101], 90.00th=[ 101], 95.00th=[ 101], | 99.00th=[ 101], 99.50th=[ 101], 99.90th=[ 101], 99.95th=[ 101], | 99.99th=[ 101] bw ( KiB/s): min= 1802, max= 2048, per=46.63%, avg=1925.00, stdev=173.95, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2064KiB/s (2114kB/s)(10.0MiB/4961msec); 0 zone resets clat (msec): min=61, max=1353, avg=476.61, stdev=575.66 lat (msec): min=62, max=1353, avg=476.70, stdev=575.66 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 79], | 30.00th=[ 84], 40.00th=[ 110], 50.00th=[ 138], 60.00th=[ 165], | 70.00th=[ 211], 80.00th=[ 1250], 90.00th=[ 1318], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 1892, max= 6144, per=54.46%, avg=3147.40, stdev=1815.38, samples=5 iops : min= 1, max= 6, avg= 2.80, stdev= 1.92, samples=5 lat (msec) : 100=41.67%, 250=33.33%, 2000=25.00% cpu : usr=0.00%, sys=10.60%, ctx=180, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191243: Tue Aug 11 13:03:56 2026 read: IOPS=1, BW=1259KiB/s (1289kB/s)(6144KiB/4879msec) clat (msec): min=78, max=532, avg=312.45, stdev=200.59 lat (msec): min=78, max=532, avg=312.45, stdev=200.59 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 109], | 30.00th=[ 109], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 443], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 1892, max= 4096, per=60.85%, avg=2511.75, stdev=1058.26, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=1, BW=1259KiB/s (1289kB/s)(6144KiB/4879msec); 0 zone resets clat (msec): min=58, max=1452, avg=498.22, stdev=554.75 lat (msec): min=58, max=1452, avg=498.32, stdev=554.78 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 74], | 30.00th=[ 74], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 284], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 1892, max= 3512, per=41.08%, avg=2373.75, stdev=762.28, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=25.00%, 250=25.00%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=11.34%, ctx=90, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191244: Tue Aug 11 13:03:56 2026 read: IOPS=1, BW=1330KiB/s (1362kB/s)(5120KiB/3849msec) clat (msec): min=141, max=324, avg=237.70, stdev=88.18 lat (msec): min=141, max=324, avg=237.70, stdev=88.18 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 249], 60.00th=[ 249], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 326], 95.00th=[ 326], | 99.00th=[ 326], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 1892, max= 6144, per=97.34%, avg=4018.00, stdev=3006.62, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1862KiB/s (1907kB/s)(7168KiB/3849msec); 0 zone resets clat (msec): min=70, max=1121, avg=374.91, stdev=371.01 lat (msec): min=70, max=1121, avg=375.02, stdev=371.00 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 132], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 230], 60.00th=[ 326], | 70.00th=[ 326], 80.00th=[ 592], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1892, max= 5370, per=57.97%, avg=3350.25, stdev=1680.37, samples=4 iops : min= 1, max= 5, avg= 2.75, stdev= 2.06, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.05%, sys=12.29%, ctx=96, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4128KiB/s (4227kB/s), 413KiB/s-1888KiB/s (423kB/s-1933kB/s), io=20.0MiB (20.0MB), run=3797-4961msec WRITE: bw=5779KiB/s (5918kB/s), 1259KiB/s-2064KiB/s (1289kB/s-2114kB/s), io=28.0MiB (29.4MB), run=3797-4961msec rand-rw: (groupid=0, jobs=1): err= 0: pid=191246: Tue Aug 11 13:03:56 2026 read: IOPS=1, BW=1926KiB/s (1972kB/s)(7168KiB/3722msec) clat (usec): min=464, max=1219.7k, avg=316178.06, stdev=410495.70 lat (usec): min=466, max=1219.7k, avg=316179.43, stdev=410495.80 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], | 20.00th=[ 83362], 30.00th=[ 164627], 40.00th=[ 164627], | 50.00th=[ 208667], 60.00th=[ 238027], 70.00th=[ 238027], | 80.00th=[ 295699], 90.00th=[1216349], 95.00th=[1216349], | 99.00th=[1216349], 99.50th=[1216349], 99.90th=[1216349], | 99.95th=[1216349], 99.99th=[1216349] bw ( KiB/s): min= 2048, max= 4096, per=79.94%, avg=3410.33, stdev=1179.82, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1376KiB/s (1409kB/s)(5120KiB/3722msec); 0 zone resets clat (msec): min=158, max=503, avg=300.10, stdev=125.33 lat (msec): min=158, max=504, avg=300.21, stdev=125.40 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 2043, max= 4096, per=45.69%, avg=2729.00, stdev=1183.86, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (usec) : 500=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.16%, sys=41.04%, ctx=1193, 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=191247: Tue Aug 11 13:03:56 2026 read: IOPS=0, BW=427KiB/s (437kB/s)(2048KiB/4800msec) clat (usec): min=846, max=116241, avg=58544.12, stdev=81597.09 lat (usec): min=847, max=116243, avg=58545.68, stdev=81597.17 clat percentiles (usec): | 1.00th=[ 848], 5.00th=[ 848], 10.00th=[ 848], 20.00th=[ 848], | 30.00th=[ 848], 40.00th=[ 848], 50.00th=[ 848], 60.00th=[115868], | 70.00th=[115868], 80.00th=[115868], 90.00th=[115868], 95.00th=[115868], | 99.00th=[115868], 99.50th=[115868], 99.90th=[115868], 99.95th=[115868], | 99.99th=[115868] bw ( KiB/s): min= 1992, max= 2048, per=47.35%, avg=2020.00, stdev=39.60, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2133KiB/s (2185kB/s)(10.0MiB/4800msec); 0 zone resets clat (msec): min=69, max=1359, avg=468.07, stdev=460.55 lat (msec): min=69, max=1359, avg=468.15, stdev=460.55 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 100], | 30.00th=[ 120], 40.00th=[ 155], 50.00th=[ 251], 60.00th=[ 255], | 70.00th=[ 435], 80.00th=[ 944], 90.00th=[ 1003], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 2043, max= 6059, per=54.56%, avg=3258.80, stdev=1799.46, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 1.64, samples=5 lat (usec) : 1000=8.33% lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 1000=8.33%, 2000=16.67% cpu : usr=0.00%, sys=28.92%, ctx=310, 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=191248: Tue Aug 11 13:03:56 2026 read: IOPS=1, BW=1292KiB/s (1323kB/s)(6144KiB/4755msec) clat (usec): min=519, max=255972, avg=102279.33, stdev=97353.41 lat (usec): min=520, max=255973, avg=102280.74, stdev=97353.35 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 1221], | 30.00th=[ 1221], 40.00th=[ 84411], 50.00th=[ 84411], 60.00th=[117965], | 70.00th=[154141], 80.00th=[154141], 90.00th=[256902], 95.00th=[256902], | 99.00th=[256902], 99.50th=[256902], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 1946, max= 4039, per=59.08%, avg=2520.25, stdev=1013.64, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1292KiB/s (1323kB/s)(6144KiB/4755msec); 0 zone resets clat (msec): min=54, max=1955, avg=689.85, stdev=768.56 lat (msec): min=54, max=1955, avg=689.91, stdev=768.57 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 368], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1955], 95.00th=[ 1955], | 99.00th=[ 1955], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 1946, max= 4096, per=42.31%, avg=2527.25, stdev=1046.71, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 100=16.67%, 250=25.00%, 500=25.00%, 2000=16.67% cpu : usr=0.02%, sys=20.78%, ctx=537, 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=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=191249: Tue Aug 11 13:03:56 2026 read: IOPS=1, BW=1245KiB/s (1275kB/s)(5120KiB/4111msec) clat (usec): min=735, max=659350, avg=232262.03, stdev=249848.87 lat (usec): min=737, max=659351, avg=232263.56, stdev=249848.74 clat percentiles (usec): | 1.00th=[ 734], 5.00th=[ 734], 10.00th=[ 734], 20.00th=[ 734], | 30.00th=[141558], 40.00th=[141558], 50.00th=[175113], 60.00th=[175113], | 70.00th=[183501], 80.00th=[183501], 90.00th=[658506], 95.00th=[658506], | 99.00th=[658506], 99.50th=[658506], 99.90th=[658506], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 4096, max= 4096, per=96.02%, avg=4096.00, stdev= 0.00, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1744KiB/s (1785kB/s)(7168KiB/4111msec); 0 zone resets clat (msec): min=97, max=1614, avg=420.92, stdev=533.16 lat (msec): min=98, max=1614, avg=421.00, stdev=533.16 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 136], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 271], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 321], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 2011, max= 5840, per=58.56%, avg=3497.50, stdev=1841.26, samples=4 iops : min= 1, max= 5, avg= 2.75, stdev= 2.06, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.07%, sys=36.40%, ctx=541, 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=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=4267KiB/s (4369kB/s), 427KiB/s-1926KiB/s (437kB/s-1972kB/s), io=20.0MiB (20.0MB), run=3722-4800msec WRITE: bw=5973KiB/s (6117kB/s), 1292KiB/s-2133KiB/s (1323kB/s-2185kB/s), io=28.0MiB (29.4MB), run=3722-4800msec 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=191255: Tue Aug 11 13:04:04 2026 read: IOPS=1, BW=7038KiB/s (7207kB/s)(12.0MiB/1746msec) clat (msec): min=310, max=930, avg=546.84, stdev=335.55 lat (msec): min=310, max=930, avg=546.84, stdev=335.55 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 401], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 927], 80.00th=[ 927], 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= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=15.42%, ctx=74, 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=191256: Tue Aug 11 13:04:04 2026 read: IOPS=0, BW=1910KiB/s (1956kB/s)(4096KiB/2144msec) clat (nsec): min=1313.3M, max=1313.3M, avg=1313281903.00, stdev= 0.00 lat (nsec): min=1313.3M, max=1313.3M, avg=1313283216.00, 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= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3821KiB/s (3913kB/s)(8192KiB/2144msec); 0 zone resets clat (msec): min=256, max=435, avg=345.77, stdev=126.39 lat (msec): min=256, max=435, avg=346.08, stdev=126.34 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 257], 50.00th=[ 257], 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] lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=13.16%, ctx=79, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=191257: Tue Aug 11 13:04:04 2026 write: IOPS=1, BW=5721KiB/s (5858kB/s)(12.0MiB/2148msec); 0 zone resets clat (msec): min=115, max=1699, avg=665.37, stdev=895.88 lat (msec): min=116, max=1699, avg=665.60, stdev=895.80 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 116], | 30.00th=[ 116], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 182], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=16.77%, ctx=217, 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=191259: Tue Aug 11 13:04:04 2026 write: IOPS=1, BW=6159KiB/s (6307kB/s)(12.0MiB/1995msec); 0 zone resets clat (msec): min=367, max=1084, avg=625.71, stdev=398.57 lat (msec): min=367, max=1085, avg=626.05, stdev=398.53 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 5997, max= 8159, per=46.40%, avg=7078.00, stdev=1528.76, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=15.55%, ctx=218, 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=7642KiB/s (7825kB/s), 1910KiB/s-7038KiB/s (1956kB/s-7207kB/s), io=16.0MiB (16.8MB), run=1746-2144msec WRITE: bw=14.9MiB/s (15.6MB/s), 3821KiB/s-6159KiB/s (3913kB/s-6307kB/s), io=32.0MiB (33.6MB), run=1995-2148msec rand-rw: (groupid=0, jobs=1): err= 0: pid=191258: Tue Aug 11 13:04:04 2026 read: IOPS=2, BW=9302KiB/s (9525kB/s)(12.0MiB/1321msec) clat (msec): min=391, max=451, avg=421.32, stdev=29.97 lat (msec): min=391, max=451, avg=421.32, stdev=29.97 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 451], 80.00th=[ 451], 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= 6390, max= 8175, per=58.72%, avg=7282.50, stdev=1262.19, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=49.09%, ctx=2196, 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=191260: Tue Aug 11 13:04:04 2026 read: IOPS=0, BW=3190KiB/s (3267kB/s)(4096KiB/1284msec) clat (nsec): min=450290k, max=450290k, avg=450290208.00, stdev= 0.00 lat (nsec): min=450291k, max=450291k, avg=450291133.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 451], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 451], 80.00th=[ 451], 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= 6050, max= 6050, per=48.78%, avg=6050.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=6380KiB/s (6533kB/s)(8192KiB/1284msec); 0 zone resets clat (msec): min=322, max=416, avg=369.72, stdev=66.27 lat (msec): min=323, max=416, avg=369.92, stdev=66.35 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 8175, max= 8175, per=49.05%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=26.58%, ctx=721, 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=191261: Tue Aug 11 13:04:04 2026 write: IOPS=1, BW=6250KiB/s (6400kB/s)(12.0MiB/1966msec); 0 zone resets clat (msec): min=195, max=1455, avg=629.32, stdev=716.21 lat (msec): min=195, max=1456, avg=629.62, stdev=716.22 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 197], | 30.00th=[ 197], 40.00th=[ 236], 50.00th=[ 236], 60.00th=[ 236], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 8126, max= 8126, per=48.76%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=10.13%, ctx=60, 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=191262: Tue Aug 11 13:04:04 2026 write: IOPS=1, BW=7046KiB/s (7215kB/s)(12.0MiB/1744msec); 0 zone resets clat (msec): min=160, max=1301, avg=552.16, stdev=648.88 lat (msec): min=160, max=1301, avg=552.47, stdev=648.86 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 197], 50.00th=[ 197], 60.00th=[ 197], | 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=12208, max=12208, per=73.25%, avg=12208.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.06%, sys=15.49%, ctx=202, 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=12.1MiB/s (12.7MB/s), 3190KiB/s-9302KiB/s (3267kB/s-9525kB/s), io=16.0MiB (16.8MB), run=1284-1321msec WRITE: bw=16.3MiB/s (17.1MB/s), 6250KiB/s-7046KiB/s (6400kB/s-7215kB/s), io=32.0MiB (33.6MB), run=1284-1966msec