== sanity test 398b: DIO and buffer IO race ============== 09:43:52 (1770648232) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.70236 s, 18.6 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=161432: Mon Feb 9 09:45:10 2026 read: IOPS=21, BW=87.2KiB/s (89.3kB/s)(5992KiB/68696msec) clat (usec): min=105, max=668921, avg=24430.82, stdev=20685.06 lat (usec): min=105, max=668921, avg=24431.82, stdev=20684.96 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 6849], 10.00th=[ 11731], 20.00th=[ 14746], | 30.00th=[ 17171], 40.00th=[ 19530], 50.00th=[ 22152], 60.00th=[ 25297], | 70.00th=[ 28967], 80.00th=[ 32900], 90.00th=[ 39060], 95.00th=[ 44827], | 99.00th=[ 62129], 99.50th=[ 73925], 99.90th=[106431], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 13, max= 143, per=25.19%, avg=86.92, stdev=22.60, samples=136 iops : min= 3, max= 35, avg=21.31, stdev= 5.69, samples=136 write: IOPS=22, BW=91.6KiB/s (93.8kB/s)(6296KiB/68696msec); 0 zone resets clat (usec): min=564, max=160912, avg=20274.25, stdev=14335.69 lat (usec): min=564, max=160913, avg=20274.84, stdev=14335.69 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 4490], 10.00th=[ 5669], 20.00th=[ 6915], | 30.00th=[ 9896], 40.00th=[ 14615], 50.00th=[ 17957], 60.00th=[ 21627], | 70.00th=[ 25560], 80.00th=[ 31065], 90.00th=[ 38536], 95.00th=[ 44827], | 99.00th=[ 63177], 99.50th=[ 73925], 99.90th=[121111], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 39, max= 159, per=25.52%, avg=92.13, stdev=25.91, samples=135 iops : min= 9, max= 39, avg=22.61, stdev= 6.48, samples=135 lat (usec) : 250=0.16%, 500=0.07%, 750=1.07%, 1000=1.07% lat (msec) : 2=0.46%, 4=1.43%, 10=14.94%, 20=29.26%, 50=48.70% lat (msec) : 100=2.70%, 250=0.10%, 750=0.03% cpu : usr=0.04%, sys=30.91%, ctx=10566, 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=161433: Mon Feb 9 09:45:10 2026 read: IOPS=21, BW=85.5KiB/s (87.5kB/s)(5940KiB/69502msec) clat (usec): min=80, max=187404, avg=24777.47, stdev=13070.36 lat (usec): min=80, max=187405, avg=24778.25, stdev=13070.31 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 8160], 10.00th=[ 11994], 20.00th=[ 15270], | 30.00th=[ 17695], 40.00th=[ 20317], 50.00th=[ 22938], 60.00th=[ 26084], | 70.00th=[ 29492], 80.00th=[ 33424], 90.00th=[ 39584], 95.00th=[ 44827], | 99.00th=[ 62129], 99.50th=[ 78119], 99.90th=[106431], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 6, max= 167, per=24.66%, avg=85.08, stdev=22.99, samples=138 iops : min= 1, max= 41, avg=20.85, stdev= 5.77, samples=138 write: IOPS=22, BW=91.3KiB/s (93.5kB/s)(6348KiB/69502msec); 0 zone resets clat (usec): min=541, max=659101, avg=20496.56, stdev=21973.21 lat (usec): min=542, max=659102, avg=20497.16, stdev=21973.21 clat percentiles (usec): | 1.00th=[ 725], 5.00th=[ 3621], 10.00th=[ 5014], 20.00th=[ 6652], | 30.00th=[ 9372], 40.00th=[ 13698], 50.00th=[ 17433], 60.00th=[ 21103], | 70.00th=[ 25560], 80.00th=[ 31327], 90.00th=[ 39584], 95.00th=[ 46924], | 99.00th=[ 66847], 99.50th=[ 88605], 99.90th=[124257], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 13, max= 208, per=25.14%, avg=90.76, stdev=32.07, samples=138 iops : min= 3, max= 52, avg=22.27, stdev= 8.06, samples=138 lat (usec) : 100=0.10%, 250=0.03%, 500=0.20%, 750=1.17%, 1000=0.85% lat (msec) : 2=0.65%, 4=1.76%, 10=14.68%, 20=28.71%, 50=48.27% lat (msec) : 100=3.35%, 250=0.20%, 750=0.03% cpu : usr=0.06%, sys=30.52%, ctx=10624, 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=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=161434: Mon Feb 9 09:45:10 2026 read: IOPS=21, BW=86.6KiB/s (88.7kB/s)(6028KiB/69587msec) clat (usec): min=222, max=659722, avg=25056.70, stdev=21080.32 lat (usec): min=223, max=659722, avg=25057.61, stdev=21080.18 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 7373], 10.00th=[ 11469], 20.00th=[ 14615], | 30.00th=[ 17171], 40.00th=[ 19792], 50.00th=[ 22676], 60.00th=[ 25822], | 70.00th=[ 29754], 80.00th=[ 33817], 90.00th=[ 40633], 95.00th=[ 45351], | 99.00th=[ 71828], 99.50th=[ 74974], 99.90th=[137364], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 6, max= 184, per=24.93%, avg=86.01, stdev=26.03, samples=138 iops : min= 1, max= 46, avg=21.08, stdev= 6.58, samples=138 write: IOPS=22, BW=89.0KiB/s (92.1kB/s)(6260KiB/69587msec); 0 zone resets clat (usec): min=661, max=114609, avg=20219.20, stdev=14928.37 lat (usec): min=662, max=114610, avg=20219.89, stdev=14928.44 clat percentiles (usec): | 1.00th=[ 824], 5.00th=[ 4146], 10.00th=[ 5342], 20.00th=[ 6783], | 30.00th=[ 10159], 40.00th=[ 13960], 50.00th=[ 17171], 60.00th=[ 20579], | 70.00th=[ 24773], 80.00th=[ 30540], 90.00th=[ 40109], 95.00th=[ 47973], | 99.00th=[ 64226], 99.50th=[ 80217], 99.90th=[112722], 99.95th=[114820], | 99.99th=[114820] bw ( KiB/s): min= 19, max= 183, per=24.67%, avg=89.04, stdev=26.39, samples=138 iops : min= 4, max= 45, avg=21.84, stdev= 6.60, samples=138 lat (usec) : 250=0.03%, 500=0.13%, 750=1.24%, 1000=0.81% lat (msec) : 2=0.68%, 4=1.37%, 10=14.68%, 20=30.76%, 50=46.58% lat (msec) : 100=3.45%, 250=0.23%, 750=0.03% cpu : usr=0.05%, sys=30.52%, ctx=10487, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=161435: Mon Feb 9 09:45:10 2026 read: IOPS=21, BW=87.2KiB/s (89.3kB/s)(6052KiB/69370msec) clat (usec): min=190, max=661271, avg=25158.22, stdev=21367.61 lat (usec): min=190, max=661271, avg=25158.77, stdev=21367.60 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 7439], 10.00th=[ 12125], 20.00th=[ 15139], | 30.00th=[ 17433], 40.00th=[ 20317], 50.00th=[ 22676], 60.00th=[ 25560], | 70.00th=[ 29230], 80.00th=[ 32900], 90.00th=[ 40109], 95.00th=[ 47973], | 99.00th=[ 72877], 99.50th=[ 88605], 99.90th=[149947], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 6, max= 160, per=25.23%, avg=87.06, stdev=24.06, samples=138 iops : min= 1, max= 40, avg=21.34, stdev= 6.07, samples=138 write: IOPS=22, BW=89.9KiB/s (92.1kB/s)(6236KiB/69370msec); 0 zone resets clat (usec): min=655, max=142683, avg=19957.72, stdev=14329.90 lat (usec): min=656, max=142684, avg=19958.34, stdev=14329.92 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 4178], 10.00th=[ 5342], 20.00th=[ 6849], | 30.00th=[ 9634], 40.00th=[ 13960], 50.00th=[ 17433], 60.00th=[ 21103], | 70.00th=[ 25822], 80.00th=[ 30540], 90.00th=[ 38011], 95.00th=[ 44303], | 99.00th=[ 65274], 99.50th=[ 73925], 99.90th=[114820], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 26, max= 191, per=24.84%, avg=89.67, stdev=26.83, samples=138 iops : min= 6, max= 47, avg=22.00, stdev= 6.73, samples=138 lat (usec) : 250=0.07%, 500=0.10%, 750=1.11%, 1000=1.20% lat (msec) : 2=0.65%, 4=1.46%, 10=14.23%, 20=29.62%, 50=48.14% lat (msec) : 100=3.12%, 250=0.26%, 750=0.03% cpu : usr=0.03%, sys=30.38%, ctx=10515, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=345KiB/s (353kB/s), 85.5KiB/s-87.2KiB/s (87.5kB/s-89.3kB/s), io=23.4MiB (24.6MB), run=68696-69587msec WRITE: bw=361KiB/s (370kB/s), 89.9KiB/s-91.6KiB/s (92.1kB/s-93.8kB/s), io=24.6MiB (25.7MB), run=68696-69587msec rand-rw: (groupid=0, jobs=1): err= 0: pid=161437: Mon Feb 9 09:45:32 2026 read: IOPS=16, BW=66.1KiB/s (67.6kB/s)(5992KiB/90707msec) clat (msec): min=2, max=670, avg=20.13, stdev=24.36 lat (msec): min=2, max=670, avg=20.13, stdev=24.36 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 31], 90.00th=[ 43], 95.00th=[ 57], | 99.00th=[ 83], 99.50th=[ 99], 99.90th=[ 153], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 15, max= 216, per=25.29%, avg=66.25, stdev=39.32, samples=179 iops : min= 3, max= 54, avg=16.18, stdev= 9.96, samples=179 write: IOPS=17, BW=69.4KiB/s (71.1kB/s)(6296KiB/90707msec); 0 zone resets clat (msec): min=13, max=228, avg=38.40, stdev=20.23 lat (msec): min=13, max=228, avg=38.40, stdev=20.23 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 53], 90.00th=[ 65], 95.00th=[ 75], | 99.00th=[ 108], 99.50th=[ 140], 99.90th=[ 165], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 23, max= 160, per=25.27%, avg=69.50, stdev=35.10, samples=179 iops : min= 5, max= 40, avg=16.99, stdev= 8.93, samples=179 lat (msec) : 4=4.46%, 10=14.10%, 20=16.60%, 50=49.93%, 100=14.06% lat (msec) : 250=0.81%, 750=0.03% cpu : usr=0.05%, sys=11.48%, ctx=6655, 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=161438: Mon Feb 9 09:45:32 2026 read: IOPS=16, BW=65.3KiB/s (66.8kB/s)(5940KiB/90989msec) clat (msec): min=2, max=663, avg=19.99, stdev=24.35 lat (msec): min=2, max=663, avg=19.99, stdev=24.35 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 43], 95.00th=[ 57], | 99.00th=[ 83], 99.50th=[ 97], 99.90th=[ 131], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 223, per=24.97%, avg=65.43, stdev=41.15, samples=180 iops : min= 1, max= 55, avg=15.98, stdev=10.40, samples=180 write: IOPS=17, BW=69.8KiB/s (71.4kB/s)(6348KiB/90989msec); 0 zone resets clat (msec): min=14, max=208, avg=38.56, stdev=19.44 lat (msec): min=14, max=208, avg=38.56, stdev=19.44 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 38], | 70.00th=[ 44], 80.00th=[ 52], 90.00th=[ 65], 95.00th=[ 77], | 99.00th=[ 103], 99.50th=[ 129], 99.90th=[ 157], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 15, max= 152, per=25.43%, avg=69.92, stdev=34.27, samples=180 iops : min= 3, max= 38, avg=17.10, stdev= 8.75, samples=180 lat (msec) : 4=4.88%, 10=13.77%, 20=16.11%, 50=50.39%, 100=14.06% lat (msec) : 250=0.75%, 750=0.03% cpu : usr=0.05%, sys=11.38%, ctx=6670, 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=161439: Mon Feb 9 09:45:32 2026 read: IOPS=16, BW=66.0KiB/s (67.6kB/s)(6028KiB/91318msec) clat (msec): min=2, max=151, avg=20.08, stdev=18.36 lat (msec): min=2, max=151, avg=20.08, stdev=18.36 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 12], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 31], 90.00th=[ 43], 95.00th=[ 58], | 99.00th=[ 86], 99.50th=[ 108], 99.90th=[ 133], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 8, max= 184, per=25.16%, avg=65.92, stdev=36.80, samples=180 iops : min= 2, max= 46, avg=16.10, stdev= 9.33, samples=180 write: IOPS=17, BW=68.6KiB/s (70.2kB/s)(6260KiB/91318msec); 0 zone resets clat (msec): min=12, max=682, avg=38.95, stdev=25.63 lat (msec): min=12, max=682, avg=38.95, stdev=25.63 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 44], 80.00th=[ 52], 90.00th=[ 64], 95.00th=[ 75], | 99.00th=[ 106], 99.50th=[ 140], 99.90th=[ 203], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 15, max= 152, per=24.86%, avg=68.38, stdev=34.58, samples=180 iops : min= 3, max= 38, avg=16.71, stdev= 8.81, samples=180 lat (msec) : 4=4.43%, 10=13.57%, 20=17.19%, 50=50.03%, 100=13.80% lat (msec) : 250=0.94%, 750=0.03% cpu : usr=0.06%, sys=11.54%, ctx=6757, 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=161440: Mon Feb 9 09:45:32 2026 read: IOPS=16, BW=66.7KiB/s (68.3kB/s)(6052KiB/90679msec) clat (msec): min=2, max=141, avg=20.58, stdev=19.75 lat (msec): min=2, max=141, avg=20.58, stdev=19.75 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 31], 90.00th=[ 47], 95.00th=[ 62], | 99.00th=[ 94], 99.50th=[ 112], 99.90th=[ 136], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 7, max= 223, per=25.67%, avg=67.25, stdev=39.58, samples=178 iops : min= 1, max= 55, avg=16.43, stdev=10.00, samples=178 write: IOPS=17, BW=68.8KiB/s (70.4kB/s)(6236KiB/90679msec); 0 zone resets clat (msec): min=14, max=680, avg=38.13, stdev=24.80 lat (msec): min=14, max=680, avg=38.13, stdev=24.80 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 43], 80.00th=[ 51], 90.00th=[ 63], 95.00th=[ 74], | 99.00th=[ 106], 99.50th=[ 121], 99.90th=[ 228], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 15, max= 144, per=25.05%, avg=68.89, stdev=35.09, samples=179 iops : min= 3, max= 36, avg=16.84, stdev= 8.92, samples=179 lat (msec) : 4=4.30%, 10=14.58%, 20=16.21%, 50=50.59%, 100=13.28% lat (msec) : 250=1.01%, 750=0.03% cpu : usr=0.04%, sys=11.52%, ctx=6731, 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=263KiB/s (269kB/s), 65.3KiB/s-66.7KiB/s (66.8kB/s-68.3kB/s), io=23.4MiB (24.6MB), run=90679-91318msec WRITE: bw=275KiB/s (282kB/s), 68.6KiB/s-69.8KiB/s (70.2kB/s-71.4kB/s), io=24.6MiB (25.7MB), run=90679-91318msec 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=161474: Mon Feb 9 09:46:01 2026 read: IOPS=16, BW=272KiB/s (278kB/s)(5920KiB/21787msec) clat (usec): min=88, max=100381, avg=29406.45, stdev=14251.18 lat (usec): min=88, max=100382, avg=29407.07, stdev=14251.20 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 1045], 10.00th=[ 13960], 20.00th=[ 18744], | 30.00th=[ 21627], 40.00th=[ 25822], 50.00th=[ 29230], 60.00th=[ 32375], | 70.00th=[ 36439], 80.00th=[ 40109], 90.00th=[ 46924], 95.00th=[ 50594], | 99.00th=[ 68682], 99.50th=[ 90702], 99.90th=[100140], 99.95th=[100140], | 99.99th=[100140] bw ( KiB/s): min= 95, max= 480, per=25.53%, avg=270.86, stdev=68.42, samples=43 iops : min= 5, max= 30, avg=16.35, stdev= 4.45, samples=43 write: IOPS=18, BW=292KiB/s (299kB/s)(6368KiB/21787msec); 0 zone resets clat (usec): min=1110, max=83848, avg=27299.63, stdev=16184.92 lat (usec): min=1110, max=83849, avg=27300.65, stdev=16184.96 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 7767], 10.00th=[ 9110], 20.00th=[13304], | 30.00th=[17171], 40.00th=[20317], 50.00th=[23987], 60.00th=[28967], | 70.00th=[33817], 80.00th=[39060], 90.00th=[50070], 95.00th=[60556], | 99.00th=[78119], 99.50th=[83362], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 64, max= 510, per=26.21%, avg=292.47, stdev=83.48, samples=43 iops : min= 4, max= 31, avg=17.70, stdev= 5.21, samples=43 lat (usec) : 100=0.13%, 500=0.26%, 750=1.17%, 1000=0.78% lat (msec) : 2=0.78%, 4=1.17%, 10=5.99%, 20=22.14%, 50=59.51% lat (msec) : 100=7.94%, 250=0.13% cpu : usr=0.03%, sys=31.98%, ctx=3353, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=161475: Mon Feb 9 09:46:01 2026 read: IOPS=16, BW=260KiB/s (266kB/s)(5744KiB/22075msec) clat (usec): min=561, max=117225, avg=29868.02, stdev=13372.38 lat (usec): min=561, max=117226, avg=29868.63, stdev=13372.40 clat percentiles (usec): | 1.00th=[ 627], 5.00th=[ 938], 10.00th=[ 16450], 20.00th=[ 19792], | 30.00th=[ 22676], 40.00th=[ 26346], 50.00th=[ 29754], 60.00th=[ 32900], | 70.00th=[ 35914], 80.00th=[ 39584], 90.00th=[ 44827], 95.00th=[ 49021], | 99.00th=[ 68682], 99.50th=[ 79168], 99.90th=[116917], 99.95th=[116917], | 99.99th=[116917] bw ( KiB/s): min= 51, max= 512, per=24.54%, avg=260.40, stdev=90.10, samples=43 iops : min= 3, max= 32, avg=15.70, stdev= 5.63, samples=43 write: IOPS=18, BW=296KiB/s (304kB/s)(6544KiB/22075msec); 0 zone resets clat (msec): min=2, max=150, avg=27.43, stdev=17.32 lat (msec): min=2, max=150, avg=27.44, stdev=17.32 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 40], 90.00th=[ 51], 95.00th=[ 59], | 99.00th=[ 86], 99.50th=[ 90], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 160, max= 474, per=26.40%, avg=294.60, stdev=71.36, samples=43 iops : min= 10, max= 29, avg=17.84, stdev= 4.52, samples=43 lat (usec) : 750=1.56%, 1000=0.78% lat (msec) : 2=0.13%, 4=0.26%, 10=6.38%, 20=20.70%, 50=62.50% lat (msec) : 100=7.42%, 250=0.26% cpu : usr=0.09%, sys=32.55%, ctx=3358, 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=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=161476: Mon Feb 9 09:46:01 2026 read: IOPS=17, BW=277KiB/s (284kB/s)(6256KiB/22562msec) clat (usec): min=101, max=98945, avg=29039.77, stdev=14631.20 lat (usec): min=102, max=98945, avg=29040.52, stdev=14631.19 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 873], 10.00th=[14353], 20.00th=[19006], | 30.00th=[22152], 40.00th=[25560], 50.00th=[27657], 60.00th=[31065], | 70.00th=[34341], 80.00th=[39584], 90.00th=[45876], 95.00th=[52691], | 99.00th=[74974], 99.50th=[89654], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 127, max= 446, per=25.83%, avg=274.05, stdev=82.43, samples=44 iops : min= 7, max= 27, avg=16.57, stdev= 5.24, samples=44 write: IOPS=16, BW=267KiB/s (274kB/s)(6032KiB/22562msec); 0 zone resets clat (usec): min=1000, max=124661, avg=29350.98, stdev=19288.43 lat (usec): min=1001, max=124662, avg=29352.18, stdev=19288.28 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 7242], 10.00th=[ 8717], 20.00th=[ 13566], | 30.00th=[ 17695], 40.00th=[ 21365], 50.00th=[ 24773], 60.00th=[ 30540], | 70.00th=[ 35390], 80.00th=[ 41681], 90.00th=[ 53740], 95.00th=[ 65799], | 99.00th=[ 93848], 99.50th=[110625], 99.90th=[124257], 99.95th=[124257], | 99.99th=[124257] bw ( KiB/s): min= 126, max= 416, per=23.05%, avg=257.25, stdev=82.04, samples=44 iops : min= 7, max= 26, avg=15.50, stdev= 5.26, samples=44 lat (usec) : 250=0.13%, 500=0.39%, 750=1.04%, 1000=1.56% lat (msec) : 2=1.04%, 4=0.78%, 10=5.60%, 20=19.40%, 50=61.20% lat (msec) : 100=8.46%, 250=0.39% cpu : usr=0.09%, sys=30.91%, ctx=3472, 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=161477: Mon Feb 9 09:46:01 2026 read: IOPS=17, BW=275KiB/s (282kB/s)(6032KiB/21925msec) clat (usec): min=150, max=150305, avg=29555.86, stdev=15743.01 lat (usec): min=150, max=150306, avg=29556.46, stdev=15743.01 clat percentiles (usec): | 1.00th=[ 611], 5.00th=[ 791], 10.00th=[ 11207], 20.00th=[ 18744], | 30.00th=[ 22152], 40.00th=[ 25822], 50.00th=[ 28967], 60.00th=[ 32637], | 70.00th=[ 36439], 80.00th=[ 40633], 90.00th=[ 46400], 95.00th=[ 55313], | 99.00th=[ 70779], 99.50th=[ 79168], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 95, max= 444, per=25.77%, avg=273.37, stdev=76.20, samples=43 iops : min= 5, max= 27, avg=16.51, stdev= 4.76, samples=43 write: IOPS=17, BW=285KiB/s (292kB/s)(6256KiB/21925msec); 0 zone resets clat (usec): min=991, max=96053, avg=27072.34, stdev=16727.18 lat (usec): min=991, max=96054, avg=27073.31, stdev=16727.20 clat percentiles (usec): | 1.00th=[ 3818], 5.00th=[ 8291], 10.00th=[ 9110], 20.00th=[11469], | 30.00th=[16319], 40.00th=[20317], 50.00th=[23462], 60.00th=[28181], | 70.00th=[33817], 80.00th=[39584], 90.00th=[47449], 95.00th=[57934], | 99.00th=[90702], 99.50th=[93848], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 128, max= 448, per=25.53%, avg=284.88, stdev=85.64, samples=43 iops : min= 8, max= 28, avg=17.23, stdev= 5.39, samples=43 lat (usec) : 250=0.13%, 750=1.82%, 1000=1.95% lat (msec) : 2=0.26%, 4=0.39%, 10=7.68%, 20=19.79%, 50=60.29% lat (msec) : 100=7.55%, 250=0.13% cpu : usr=0.04%, sys=31.69%, ctx=3213, 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=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=1062KiB/s (1087kB/s), 260KiB/s-277KiB/s (266kB/s-284kB/s), io=23.4MiB (24.5MB), run=21787-22562msec WRITE: bw=1117KiB/s (1144kB/s), 267KiB/s-296KiB/s (274kB/s-304kB/s), io=24.6MiB (25.8MB), run=21787-22562msec rand-rw: (groupid=0, jobs=1): err= 0: pid=161469: Mon Feb 9 09:46:06 2026 read: IOPS=13, BW=222KiB/s (227kB/s)(5920KiB/26679msec) clat (msec): min=2, max=132, avg=25.43, stdev=21.53 lat (msec): min=2, max=132, avg=25.43, stdev=21.53 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 13], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 37], 90.00th=[ 58], 95.00th=[ 77], | 99.00th=[ 95], 99.50th=[ 106], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 31, max= 672, per=23.82%, avg=212.96, stdev=129.75, samples=52 iops : min= 1, max= 42, avg=12.81, stdev= 8.31, samples=52 write: IOPS=14, BW=239KiB/s (244kB/s)(6368KiB/26679msec); 0 zone resets clat (msec): min=12, max=173, avg=43.31, stdev=24.06 lat (msec): min=12, max=173, avg=43.31, stdev=24.06 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 48], 80.00th=[ 60], 90.00th=[ 72], 95.00th=[ 87], | 99.00th=[ 140], 99.50th=[ 171], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 64, max= 512, per=24.56%, avg=231.08, stdev=103.24, samples=52 iops : min= 4, max= 32, avg=13.94, stdev= 6.62, samples=52 lat (msec) : 4=2.21%, 10=10.03%, 20=16.28%, 50=50.78%, 100=18.88% lat (msec) : 250=1.82% cpu : usr=0.02%, sys=13.26%, ctx=2001, 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=161470: Mon Feb 9 09:46:06 2026 read: IOPS=13, BW=215KiB/s (220kB/s)(5744KiB/26766msec) clat (msec): min=2, max=133, avg=25.73, stdev=21.61 lat (msec): min=2, max=133, avg=25.73, stdev=21.61 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 55], 95.00th=[ 68], | 99.00th=[ 111], 99.50th=[ 124], 99.90th=[ 134], 99.95th=[ 134], | 99.99th=[ 134] bw ( KiB/s): min= 31, max= 672, per=23.87%, avg=213.42, stdev=119.38, samples=53 iops : min= 1, max= 42, avg=12.85, stdev= 7.67, samples=53 write: IOPS=15, BW=244KiB/s (250kB/s)(6544KiB/26766msec); 0 zone resets clat (msec): min=12, max=169, avg=42.60, stdev=24.08 lat (msec): min=12, max=169, avg=42.61, stdev=24.08 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 47], 80.00th=[ 58], 90.00th=[ 74], 95.00th=[ 93], | 99.00th=[ 126], 99.50th=[ 136], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 95, max= 704, per=25.84%, avg=243.17, stdev=127.86, samples=53 iops : min= 5, max= 44, avg=14.72, stdev= 8.22, samples=53 lat (msec) : 4=1.95%, 10=8.59%, 20=17.32%, 50=52.08%, 100=17.58% lat (msec) : 250=2.47% cpu : usr=0.04%, sys=13.35%, ctx=1965, 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=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=161471: Mon Feb 9 09:46:06 2026 read: IOPS=14, BW=238KiB/s (244kB/s)(6256KiB/26256msec) clat (msec): min=3, max=159, avg=26.78, stdev=23.62 lat (msec): min=3, max=159, avg=26.78, stdev=23.62 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 41], 90.00th=[ 64], 95.00th=[ 74], | 99.00th=[ 111], 99.50th=[ 127], 99.90th=[ 159], 99.95th=[ 159], | 99.99th=[ 159] bw ( KiB/s): min= 95, max= 768, per=26.74%, avg=239.10, stdev=142.85, samples=52 iops : min= 5, max= 48, avg=14.44, stdev= 9.06, samples=52 write: IOPS=14, BW=230KiB/s (235kB/s)(6032KiB/26256msec); 0 zone resets clat (msec): min=12, max=139, avg=41.53, stdev=20.21 lat (msec): min=12, max=139, avg=41.53, stdev=20.21 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 46], 80.00th=[ 57], 90.00th=[ 71], 95.00th=[ 82], | 99.00th=[ 111], 99.50th=[ 126], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 31, max= 640, per=24.36%, avg=229.27, stdev=112.22, samples=52 iops : min= 1, max= 40, avg=13.83, stdev= 7.26, samples=52 lat (msec) : 4=2.08%, 10=9.90%, 20=16.67%, 50=50.13%, 100=19.66% lat (msec) : 250=1.56% cpu : usr=0.02%, sys=14.09%, ctx=2059, 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=161472: Mon Feb 9 09:46:06 2026 read: IOPS=14, BW=231KiB/s (236kB/s)(6032KiB/26162msec) clat (msec): min=3, max=145, avg=25.95, stdev=22.08 lat (msec): min=3, max=145, avg=25.95, stdev=22.08 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 10], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 57], 95.00th=[ 74], | 99.00th=[ 103], 99.50th=[ 126], 99.90th=[ 146], 99.95th=[ 146], | 99.99th=[ 146] bw ( KiB/s): min= 64, max= 672, per=25.38%, avg=226.86, stdev=127.49, samples=51 iops : min= 4, max= 42, avg=13.67, stdev= 8.11, samples=51 write: IOPS=14, BW=239KiB/s (245kB/s)(6256KiB/26162msec); 0 zone resets clat (msec): min=15, max=179, avg=41.34, stdev=20.81 lat (msec): min=15, max=179, avg=41.34, stdev=20.81 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 47], 80.00th=[ 53], 90.00th=[ 68], 95.00th=[ 80], | 99.00th=[ 138], 99.50th=[ 148], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 96, max= 544, per=25.22%, avg=237.35, stdev=104.56, samples=51 iops : min= 6, max= 34, avg=14.33, stdev= 6.72, samples=51 lat (msec) : 4=1.95%, 10=8.46%, 20=16.93%, 50=54.17%, 100=17.06% lat (msec) : 250=1.43% cpu : usr=0.06%, sys=13.89%, ctx=2034, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=895KiB/s (916kB/s), 215KiB/s-238KiB/s (220kB/s-244kB/s), io=23.4MiB (24.5MB), run=26162-26766msec WRITE: bw=941KiB/s (964kB/s), 230KiB/s-244KiB/s (235kB/s-250kB/s), io=24.6MiB (25.8MB), run=26162-26766msec 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=161491: Mon Feb 9 09:46:21 2026 read: IOPS=1, BW=1523KiB/s (1559kB/s)(7168KiB/4707msec) clat (usec): min=1240, max=444959, avg=226118.63, stdev=170214.54 lat (usec): min=1241, max=444961, avg=226119.76, stdev=170214.76 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1237], 10.00th=[ 1237], 20.00th=[ 1254], | 30.00th=[227541], 40.00th=[227541], 50.00th=[240124], 60.00th=[308282], | 70.00th=[308282], 80.00th=[358613], 90.00th=[446694], 95.00th=[446694], | 99.00th=[446694], 99.50th=[446694], 99.90th=[446694], 99.95th=[446694], | 99.99th=[446694] bw ( KiB/s): min= 2007, max= 3806, per=69.44%, avg=2383.80, stdev=795.23, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1088KiB/s (1114kB/s)(5120KiB/4707msec); 0 zone resets clat (msec): min=440, max=789, avg=598.32, stdev=131.02 lat (msec): min=440, max=790, avg=598.37, stdev=131.04 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1885, max= 2043, per=41.47%, avg=1993.50, stdev=74.11, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 2=16.67%, 250=16.67%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=47.56%, ctx=1050, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=161493: Mon Feb 9 09:46:21 2026 read: IOPS=0, BW=343KiB/s (352kB/s)(2048KiB/5964msec) clat (msec): min=254, max=381, avg=318.24, stdev=89.68 lat (msec): min=254, max=381, avg=318.24, stdev=89.68 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 255], 60.00th=[ 380], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 380], 95.00th=[ 380], | 99.00th=[ 380], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 2003, max= 2043, per=58.93%, avg=2023.00, stdev=28.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1717KiB/s (1758kB/s)(10.0MiB/5964msec); 0 zone resets clat (msec): min=257, max=1072, avg=522.93, stdev=259.01 lat (msec): min=257, max=1072, avg=523.00, stdev=259.00 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 275], | 30.00th=[ 321], 40.00th=[ 334], 50.00th=[ 468], 60.00th=[ 485], | 70.00th=[ 567], 80.00th=[ 667], 90.00th=[ 785], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 1885, max= 4087, per=47.72%, avg=2293.86, stdev=793.94, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.79, samples=7 lat (msec) : 500=66.67%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=43.84%, ctx=644, 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=161495: Mon Feb 9 09:46:21 2026 read: IOPS=1, BW=1337KiB/s (1369kB/ rand-rw: (groupid=0, jobs=1): err= 0: pid=161489: Mon Feb 9 09:46:21 2026 read: IOPS=1, BW=1868KiB/s (1913kB/s)(7168KiB/3837msec) clat (msec): min=111, max=1155, avg=336.53, stdev=372.71 lat (msec): min=111, max=1155, avg=336.53, stdev=372.71 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 118], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 218], 60.00th=[ 259], | 70.00th=[ 259], 80.00th=[ 368], 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= 2048, max= 5807, per=100.00%, avg=3875.33, stdev=1881.67, samples=3 iops : min= 2, max= 5, avg= 3.33, stdev= 1.53, samples=3 write: IOPS=1, BW=1334KiB/s (1366kB/s)(5120KiB/3837msec); 0 zone resets clat (msec): min=175, max=517, avg=293.86, stdev=130.78 lat (msec): min=175, max=517, avg=293.94, stdev=130.78 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 253], 60.00th=[ 253], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 1903, max= 4096, per=53.09%, avg=2520.25, stdev=1052.51, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=19.03%, ctx=158, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=161490: Mon Feb 9 09:46:21 2026 read: IOPS=0, BW=339KiB/s (347kB/s)(2048KiB/6040msec) clat (msec): min=198, max=686, avg=442.53, stdev=344.70 lat (msec): min=198, max=686, avg=442.53, stdev=344.70 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 199], 60.00th=[ 684], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1903, max= 2043, per=58.20%, avg=1973.00, stdev=98.99, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1695KiB/s (1736kB/s)(10.0MiB/6040msec); 0 zone resets clat (msec): min=48, max=1544, avg=512.41, stdev=458.04 lat (msec): min=48, max=1544, avg=512.49, stdev=458.03 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 48], 10.00th=[ 48], 20.00th=[ 171], | 30.00th=[ 224], 40.00th=[ 257], 50.00th=[ 271], 60.00th=[ 430], | 70.00th=[ 456], 80.00th=[ 735], 90.00th=[ 986], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 1903, max= 4015, per=49.49%, avg=2349.17, stdev=818.04, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (msec) : 50=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=18.74%, ctx=431, 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=161492: Mon Feb 9 09:46:21 2026 read: IOPS=1, BW=1070KiB/s (1095kB/s)(61s)(6144KiB/4594msec) clat (usec): min=1167, max=528068, avg=214829.44, stdev=240492.62 lat (usec): min=1168, max=528068, avg=214830.28, stdev=240492.30 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1172], 10.00th=[ 1172], 20.00th=[ 1237], | 30.00th=[ 1237], 40.00th=[ 1369], 50.00th=[ 1369], 60.00th=[362808], | 70.00th=[396362], 80.00th=[396362], 90.00th=[526386], 95.00th=[526386], | 99.00th=[526386], 99.50th=[526386], 99.90th=[526386], 99.95th=[526386], | 99.99th=[526386] bw ( KiB/s): min= 2007, max= 4096, per=74.17%, avg=2546.25, stdev=1033.29, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1337KiB/s (1369kB/s)(6144KiB/4594msec); 0 zone resets clat (msec): min=343, max=800, avg=546.36, stdev=194.91 lat (msec): min=343, max=800, avg=546.42, stdev=194.93 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 435], 50.00th=[ 435], 60.00th=[ 542], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1885, max= 2043, per=41.46%, avg=1993.20, stdev=64.18, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 2=25.00%, 500=41.67%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=49.29%, ctx=718, 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=161496: Mon Feb 9 09:46:21 2026 read: IOPS=0, BW=1018KiB/s (1043kB/s)(5120KiB/5029msec) clat (usec): min=1078, max=401321, avg=81222.92, stdev=178940.65 lat (usec): min=1078, max=401323, avg=81223.65, stdev=178941.06 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1074], 10.00th=[ 1074], 20.00th=[ 1074], | 30.00th=[ 1123], 40.00th=[ 1123], 50.00th=[ 1172], 60.00th=[ 1172], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[400557], 95.00th=[400557], | 99.00th=[400557], 99.50th=[400557], 99.90th=[400557], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1425KiB/s (1460kB/s)(7168KiB/5029msec); 0 zone resets clat (msec): min=359, max=1114, avg=644.77, stdev=321.71 lat (msec): min=359, max=1115, avg=644.83, stdev=321.70 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 451], | 30.00th=[ 460], 40.00th=[ 460], 50.00th=[ 489], 60.00th=[ 531], | 70.00th=[ 531], 80.00th=[ 1099], 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= 1885, max= 2048, per=41.46%, avg=1993.00, stdev=78.50, samples=6 iops : min= 1, max= 2, avg= 1.33, stdev= 0.52, samples=6 lat (msec) : 2=33.33%, 500=41.67%, 750=8.33%, 2000=16.67% cpu : usr=0.00%, sys=38.60%, ctx=265, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3434KiB/s (3516kB/s), 343KiB/s-1523KiB/s (352kB/s-1559kB/s), io=20.0MiB (20.0MB), run=4594-5964msec WRITE: bw=4808KiB/s (4923kB/s), 1088KiB/s-1717KiB/s (144KiB/5744msec) 114kB/s-1758kB/s), io=28.0MiB (29.4MB), run=4594-5964msec clat (msec): min=111, max=884, avg=334.33, stdev=288.30 lat (msec): min=111, max=884, avg=334.33, stdev=288.30 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 213], 50.00th=[ 213], 60.00th=[ 317], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 2043, max= 4096, per=100.00%, avg=3408.67, stdev=1182.71, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1070KiB/s (1095kB/s)(6144KiB/5744msec); 0 zone resets clat (msec): min=122, max=1178, avg=614.90, stdev=410.78 lat (msec): min=122, max=1178, avg=614.98, stdev=410.78 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 743], | 70.00th=[ 827], 80.00th=[ 827], 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= 1903, max= 4096, per=50.49%, avg=2396.80, stdev=952.39, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 lat (msec) : 250=41.67%, 500=16.67%, 750=16.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.03%, sys=15.32%, ctx=139, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=161494: Mon Feb 9 09:46:21 2026 read: IOPS=0, BW=914KiB/s (936kB/s)(5120KiB/5600msec) clat (msec): min=138, max=772, avg=357.62, stdev=250.89 lat (msec): min=138, max=772, avg=357.62, stdev=250.89 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 251], 60.00th=[ 251], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 4015, max= 4087, per=100.00%, avg=4051.00, stdev=50.91, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1280KiB/s (1311kB/s)(7168KiB/5600msec); 0 zone resets clat (msec): min=262, max=764, avg=540.63, stdev=169.68 lat (msec): min=262, max=764, avg=540.70, stdev=169.67 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 393], | 30.00th=[ 493], 40.00th=[ 493], 50.00th=[ 609], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1885, max= 2048, per=41.80%, avg=1984.40, stdev=82.79, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=16.67%, 500=41.67%, 750=25.00%, 1000=16.67% cpu : usr=0.00%, sys=20.09%, ctx=229, 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=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=3391KiB/s (3472kB/s), 339KiB/s-1868KiB/s (347kB/s-1913kB/s), io=20.0MiB (20.0MB), run=3837-6040msec WRITE: bw=4747KiB/s (4861kB/s), 1070KiB/s-1695KiB/s (1095kB/s-1736kB/s), io=28.0MiB (29.4MB), run=3837-6040msec 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=161503: Mon Feb 9 09:46:37 2026 read: IOPS=1, BW=5272KiB/s (5398kB/s)(12.0MiB/2331msec) clat (msec): min=675, max=829, avg=769.81, stdev=82.81 lat (msec): min=675, max=829, avg=769.81, stdev=82.81 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 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= 5785, max= 8143, per=100.00%, avg=6964.00, stdev=1667.36, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=58.03%, ctx=2224, 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=161504: Mon Feb 9 09:46:37 2026 read: IOPS=0, BW=1561KiB/s (1598kB/s)(4096KiB/2624msec) clat (nsec): min=745754k, max=745754k, avg=745754261.00, stdev= 0.00 lat (nsec): min=745757k, max=745757k, avg=745756589.00, stdev= 0.00 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=[ 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= 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=3122KiB/s (3197kB/s)(8192KiB/2624msec); 0 zone resets clat (msec): min=684, max=1164, avg=924.25, stdev=339.39 lat (msec): min=684, max=1164, avg=924.51, stdev=339.40 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 1167], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8175, max= 8175, per=80.16%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=26.88%, ctx=847, 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=161505: Mon Feb 9 09:46:37 2026 write: IOPS=0, BW=3824KiB/s (3916kB/s)(12.0MiB/3213msec); 0 zone resets clat (msec): min=255, max=2168, avg=1061.50, stdev=991.40 lat (msec): min=255, max=2168, avg=1061.85, stdev=991.45 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8031, max= 8192, per=79.54%, avg=8111.50, stdev=113.84, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=18.24%, ctx=203, 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=161506: Mon Feb 9 09:46:37 2026 write: IOPS=1, BW=5053KiB/s (5174kB/s)(12.0MiB/2432msec); 0 zone resets clat (msec): min=375, max=1555, avg=804.57, stdev=652.46 lat (msec): min=376, max=1555, avg=804.88, stdev=652.44 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 5542, max= 8126, per=67.01%, avg=6834.00, stdev=1827.16, 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=22.17%, ctx=274, 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=6244KiB/s (6394kB/s), 1561KiB/s-5272KiB/s (1598kB/s-5398kB/s), io=16.0MiB (16.8MB), run=2331-2624msec WRITE: bw=9.96MiB/s (10.4MB/s), 3122KiB/s-5053KiB/s (3197kB/s-5174kB/s), io=32.0MiB (33.6MB), run=2432-3213msec rand-rw: (groupid=0, jobs=1): err= 0: pid=161507: Mon Feb 9 09:46:37 2026 read: IOPS=1, BW=5107KiB/s (5230kB/s)(12.0MiB/2406msec) clat (msec): min=710, max=914, avg=794.88, stdev=106.42 lat (msec): min=710, max=914, avg=794.88, stdev=106.42 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=21.21%, ctx=111, 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=161508: Mon Feb 9 09:46:37 2026 read: IOPS=0, BW=1513KiB/s (1549kB/s)(4096KiB/2708msec) clat (nsec): min=1384.4M, max=1384.4M, avg=1384421068.00, stdev= 0.00 lat (nsec): min=1384.4M, max=1384.4M, avg=1384423108.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1385], 5.00th=[ 1385], 10.00th=[ 1385], 20.00th=[ 1385], | 30.00th=[ 1385], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3025KiB/s (3098kB/s)(8192KiB/2708msec); 0 zone resets clat (msec): min=563, max=668, avg=615.67, stdev=74.40 lat (msec): min=563, max=668, avg=615.96, stdev=74.43 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 8192, max= 8192, per=81.35%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=16.73%, ctx=82, 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=161509: Mon Feb 9 09:46:37 2026 write: IOPS=0, BW=3776KiB/s (3867kB/s)(12.0MiB/3254msec); 0 zone resets clat (msec): min=126, max=2647, avg=1071.49, stdev=1373.47 lat (msec): min=126, max=2647, avg=1071.73, stdev=1373.44 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 127], | 30.00th=[ 127], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 443], | 70.00th=[ 2635], 80.00th=[ 2635], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 8031, max= 8192, per=80.55%, avg=8111.50, stdev=113.84, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=12.11%, ctx=89, 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=161510: Mon Feb 9 09:46:37 2026 write: IOPS=1, BW=4294KiB/s (4397kB/s)(12.0MiB/2862msec); 0 zone resets clat (msec): min=458, max=1637, avg=947.53, stdev=614.33 lat (msec): min=458, max=1637, avg=947.73, stdev=614.30 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8031, max= 8192, per=80.55%, avg=8111.50, stdev=113.84, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.03%, sys=18.70%, 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=6050KiB/s (6195kB/s), 1513KiB/s-5107KiB/s (1549kB/s-5230kB/s), io=16.0MiB (16.8MB), run=2406-2708msec WRITE: bw=9.83MiB/s (10.3MB/s), 3025KiB/s-4294KiB/s (3098kB/s-4397kB/s), io=32.0MiB (33.6MB), run=2708-3254msec