== sanity test 398b: DIO and buffer IO race ============== 23:25:25 (1788837925) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.21726 s, 9.6 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=145998: Mon Sep 7 23:27:51 2026 read: IOPS=11, BW=47.4KiB/s (48.6kB/s)(5992KiB/126342msec) clat (usec): min=33, max=765897, avg=40369.44, stdev=37069.92 lat (usec): min=34, max=765898, avg=40370.77, stdev=37069.90 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 88], 20.00th=[ 18220], | 30.00th=[ 22676], 40.00th=[ 27657], 50.00th=[ 33817], 60.00th=[ 40633], | 70.00th=[ 48497], 80.00th=[ 61080], 90.00th=[ 77071], 95.00th=[ 93848], | 99.00th=[147850], 99.50th=[189793], 99.90th=[425722], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 7, max= 111, per=25.37%, avg=47.44, stdev=20.40, samples=246 iops : min= 1, max= 27, avg=11.20, stdev= 5.11, samples=246 write: IOPS=12, BW=49.8KiB/s (51.0kB/s)(6296KiB/126342msec); 0 zone resets clat (usec): min=973, max=732299, avg=41575.18, stdev=44670.97 lat (usec): min=974, max=732301, avg=41579.17, stdev=44672.89 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1237], 10.00th=[ 1893], 20.00th=[ 4228], | 30.00th=[ 8979], 40.00th=[ 20055], 50.00th=[ 30540], 60.00th=[ 42206], | 70.00th=[ 54264], 80.00th=[ 70779], 90.00th=[ 98042], 95.00th=[120062], | 99.00th=[187696], 99.50th=[204473], 99.90th=[240124], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 5, max= 111, per=25.26%, avg=49.50, stdev=20.36, samples=248 iops : min= 1, max= 27, avg=11.72, stdev= 5.10, samples=248 lat (usec) : 50=0.62%, 100=4.39%, 250=0.46%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=5.50%, 4=4.39%, 10=6.28%, 20=10.19%, 50=37.08% lat (msec) : 100=23.89%, 250=6.84%, 500=0.07%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=4.87%, ctx=6538, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145999: Mon Sep 7 23:27:51 2026 read: IOPS=11, BW=46.7KiB/s (47.8kB/s)(5940KiB/127115msec) clat (usec): min=32, max=764323, avg=39070.63, stdev=35656.98 lat (usec): min=32, max=764325, avg=39072.26, stdev=35656.99 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 60], 10.00th=[ 113], 20.00th=[ 17433], | 30.00th=[ 22938], 40.00th=[ 26870], 50.00th=[ 32113], 60.00th=[ 38536], | 70.00th=[ 46924], 80.00th=[ 58459], 90.00th=[ 74974], 95.00th=[ 91751], | 99.00th=[145753], 99.50th=[177210], 99.90th=[250610], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 7, max= 119, per=24.79%, avg=46.36, stdev=20.64, samples=250 iops : min= 1, max= 29, avg=10.94, stdev= 5.18, samples=250 write: IOPS=12, BW=49.9KiB/s (51.1kB/s)(6348KiB/127115msec); 0 zone resets clat (usec): min=974, max=975709, avg=43253.58, stdev=49012.05 lat (usec): min=975, max=975711, avg=43259.59, stdev=49009.02 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1287], 10.00th=[ 1827], 20.00th=[ 4359], | 30.00th=[ 8455], 40.00th=[ 20841], 50.00th=[ 32113], 60.00th=[ 43779], | 70.00th=[ 58459], 80.00th=[ 73925], 90.00th=[ 99091], 95.00th=[125305], | 99.00th=[183501], 99.50th=[214959], 99.90th=[371196], 99.95th=[977273], | 99.99th=[977273] bw ( KiB/s): min= 7, max= 159, per=25.37%, avg=49.73, stdev=20.47, samples=249 iops : min= 1, max= 39, avg=11.78, stdev= 5.15, samples=249 lat (usec) : 50=0.55%, 100=4.17%, 250=0.49%, 500=0.13%, 1000=0.03% lat (msec) : 2=5.83%, 4=4.10%, 10=6.87%, 20=10.09%, 50=36.75% lat (msec) : 100=23.99%, 250=6.77%, 500=0.16%, 1000=0.07% cpu : usr=0.07%, sys=5.01%, ctx=6566, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146000: Mon Sep 7 23:27:51 2026 read: IOPS=12, BW=48.1KiB/s (49.2kB/s)(6028KiB/125444msec) clat (usec): min=31, max=725999, avg=40098.59, stdev=36467.45 lat (usec): min=31, max=726001, avg=40101.68, stdev=36467.74 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 334], 20.00th=[ 17957], | 30.00th=[ 22676], 40.00th=[ 27395], 50.00th=[ 32900], 60.00th=[ 39584], | 70.00th=[ 47973], 80.00th=[ 58983], 90.00th=[ 78119], 95.00th=[ 95945], | 99.00th=[137364], 99.50th=[214959], 99.90th=[325059], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 7, max= 119, per=25.47%, avg=47.64, stdev=22.21, samples=246 iops : min= 1, max= 29, avg=11.25, stdev= 5.57, samples=246 write: IOPS=12, BW=49.9KiB/s (51.1kB/s)(6260KiB/125444msec); 0 zone resets clat (usec): min=945, max=305056, avg=41272.95, stdev=43237.46 lat (usec): min=946, max=305057, avg=41275.25, stdev=43237.32 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1237], 10.00th=[ 1745], 20.00th=[ 3818], | 30.00th=[ 7832], 40.00th=[ 17695], 50.00th=[ 29230], 60.00th=[ 40633], | 70.00th=[ 55837], 80.00th=[ 73925], 90.00th=[ 96994], 95.00th=[124257], | 99.00th=[183501], 99.50th=[229639], 99.90th=[283116], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 7, max= 143, per=25.21%, avg=49.41, stdev=20.80, samples=246 iops : min= 1, max= 35, avg=11.70, stdev= 5.22, samples=246 lat (usec) : 50=0.91%, 100=3.48%, 250=0.49%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=6.18%, 4=4.49%, 10=6.80%, 20=10.42%, 50=36.52% lat (msec) : 100=23.37%, 250=6.74%, 500=0.20%, 750=0.03% cpu : usr=0.08%, sys=5.12%, ctx=6562, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146001: Mon Sep 7 23:27:51 2026 read: IOPS=11, BW=47.4KiB/s (48.5kB/s)(6052KiB/127765msec) clat (usec): min=31, max=292797, avg=40319.84, stdev=31636.81 lat (usec): min=31, max=292798, avg=40321.20, stdev=31636.76 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 119], 20.00th=[ 17957], | 30.00th=[ 23462], 40.00th=[ 28443], 50.00th=[ 34341], 60.00th=[ 41157], | 70.00th=[ 50070], 80.00th=[ 61080], 90.00th=[ 78119], 95.00th=[ 91751], | 99.00th=[139461], 99.50th=[193987], 99.90th=[283116], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 7, max= 119, per=25.23%, avg=47.18, stdev=20.55, samples=250 iops : min= 1, max= 29, avg=11.14, stdev= 5.17, samples=250 write: IOPS=12, BW=48.8KiB/s (49.0kB/s)(6236KiB/127765msec); 0 zone resets clat (usec): min=931, max=720084, avg=42534.21, stdev=46922.45 lat (usec): min=932, max=720086, avg=42537.86, stdev=46923.10 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1270], 10.00th=[ 1893], 20.00th=[ 4752], | 30.00th=[ 10028], 40.00th=[ 20317], 50.00th=[ 31851], 60.00th=[ 41681], | 70.00th=[ 56361], 80.00th=[ 72877], 90.00th=[ 98042], 95.00th=[121111], | 99.00th=[183501], 99.50th=[212861], 99.90th=[658506], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 7, max= 143, per=24.68%, avg=48.38, stdev=20.42, samples=251 iops : min= 1, max= 35, avg=11.45, stdev= 5.13, samples=251 lat (usec) : 50=0.62%, 100=4.13%, 250=0.65%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.20% lat (msec) : 2=5.31%, 4=3.84%, 10=6.45%, 20=10.55%, 50=35.74% lat (msec) : 100=25.81%, 250=6.32%, 500=0.13%, 750=0.07% cpu : usr=0.08%, sys=4.97%, ctx=6633, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=188KiB/s (192kB/s), 46.7KiB/s-48.1KiB/s (47.8kB/s-49.2kB/s), io=23.4MiB (24.6MB), run=125444-127765msec WRITE: bw=197KiB/s (201kB/s), 48.8KiB/s-49.9KiB/s (49.0kB/s-51.1kB/s), io=24.6MiB (25.7MB), run=125444-127765msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146003: Mon Sep 7 23:30:03 2026 read: IOPS=5, BW=23.3KiB/s (23.8kB/s)(5992KiB/257414msec) clat (msec): min=5, max=990, avg=35.93, stdev=48.48 lat (msec): min=5, max=990, avg=35.94, stdev=48.48 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 46], 90.00th=[ 73], 95.00th=[ 100], | 99.00th=[ 167], 99.50th=[ 232], 99.90th=[ 802], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 119, per=28.52%, avg=26.24, stdev=17.46, samples=443 iops : min= 1, max= 29, avg= 5.96, stdev= 4.39, samples=443 write: IOPS=6, BW=24.5KiB/s (25.0kB/s)(6296KiB/257414msec); 0 zone resets clat (msec): min=36, max=422, avg=129.26, stdev=61.28 lat (msec): min=36, max=422, avg=129.27, stdev=61.28 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 81], | 30.00th=[ 90], 40.00th=[ 100], 50.00th=[ 112], 60.00th=[ 127], | 70.00th=[ 146], 80.00th=[ 176], 90.00th=[ 218], 95.00th=[ 253], | 99.00th=[ 334], 99.50th=[ 363], 99.90th=[ 418], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 48, per=25.08%, avg=24.33, stdev=11.03, samples=500 iops : min= 1, max= 12, avg= 5.47, stdev= 2.84, samples=500 lat (msec) : 10=3.65%, 20=15.98%, 50=21.22%, 100=26.43%, 250=29.88% lat (msec) : 500=2.73%, 750=0.03%, 1000=0.07% cpu : usr=0.04%, sys=1.14%, ctx=5445, 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=146004: Mon Sep 7 23:30:03 2026 read: IOPS=5, BW=23.0KiB/s (23.6kB/s)(5940KiB/258204msec) clat (msec): min=5, max=747, avg=34.76, stdev=40.41 lat (msec): min=5, max=747, avg=34.77, stdev=40.41 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 44], 90.00th=[ 77], 95.00th=[ 102], | 99.00th=[ 169], 99.50th=[ 271], 99.90th=[ 422], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 95, per=28.52%, avg=26.24, stdev=17.31, samples=439 iops : min= 1, max= 23, avg= 5.96, stdev= 4.38, samples=439 write: IOPS=6, BW=24.6KiB/s (25.2kB/s)(6348KiB/258204msec); 0 zone resets clat (msec): min=40, max=1082, avg=130.08, stdev=69.17 lat (msec): min=40, max=1082, avg=130.09, stdev=69.17 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 68], 20.00th=[ 80], | 30.00th=[ 90], 40.00th=[ 101], 50.00th=[ 112], 60.00th=[ 125], | 70.00th=[ 146], 80.00th=[ 171], 90.00th=[ 213], 95.00th=[ 255], | 99.00th=[ 384], 99.50th=[ 426], 99.90th=[ 575], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 56, per=25.11%, avg=24.36, stdev=10.95, samples=504 iops : min= 1, max= 14, avg= 5.48, stdev= 2.83, samples=504 lat (msec) : 10=4.04%, 20=15.76%, 50=20.67%, 100=26.01%, 250=30.63% lat (msec) : 500=2.80%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.13%, ctx=5409, 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=146005: Mon Sep 7 23:30:03 2026 read: IOPS=5, BW=23.3KiB/s (23.9kB/s)(6028KiB/258656msec) clat (msec): min=5, max=671, avg=36.18, stdev=38.45 lat (msec): min=5, max=671, avg=36.18, stdev=38.45 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 50], 90.00th=[ 74], 95.00th=[ 102], | 99.00th=[ 167], 99.50th=[ 213], 99.90th=[ 418], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 104, per=27.62%, avg=25.41, stdev=16.55, samples=459 iops : min= 1, max= 26, avg= 5.75, stdev= 4.19, samples=459 write: IOPS=6, BW=24.2KiB/s (24.8kB/s)(6260KiB/258656msec); 0 zone resets clat (msec): min=38, max=948, avg=130.35, stdev=68.51 lat (msec): min=38, max=948, avg=130.35, stdev=68.52 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 70], 20.00th=[ 81], | 30.00th=[ 90], 40.00th=[ 101], 50.00th=[ 112], 60.00th=[ 127], | 70.00th=[ 142], 80.00th=[ 171], 90.00th=[ 215], 95.00th=[ 266], | 99.00th=[ 368], 99.50th=[ 430], 99.90th=[ 558], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 56, per=24.78%, avg=24.04, stdev=11.14, samples=502 iops : min= 1, max= 14, avg= 5.40, stdev= 2.87, samples=502 lat (msec) : 10=3.29%, 20=15.85%, 50=20.70%, 100=27.08%, 250=29.72% lat (msec) : 500=3.26%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.14%, ctx=5293, 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=146006: Mon Sep 7 23:30:03 2026 read: IOPS=5, BW=23.4KiB/s (23.9kB/s)(6052KiB/259094msec) clat (msec): min=5, max=424, avg=35.96, stdev=37.51 lat (msec): min=5, max=424, avg=35.96, stdev=37.51 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 48], 90.00th=[ 81], 95.00th=[ 111], | 99.00th=[ 186], 99.50th=[ 243], 99.90th=[ 317], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7, max= 119, per=28.05%, avg=25.80, stdev=18.00, samples=454 iops : min= 1, max= 29, avg= 5.85, stdev= 4.54, samples=454 write: IOPS=6, BW=24.1KiB/s (24.6kB/s)(6236KiB/259094msec); 0 zone resets clat (msec): min=31, max=1090, avg=131.22, stdev=72.52 lat (msec): min=31, max=1090, avg=131.22, stdev=72.52 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 61], 10.00th=[ 69], 20.00th=[ 81], | 30.00th=[ 90], 40.00th=[ 100], 50.00th=[ 111], 60.00th=[ 126], | 70.00th=[ 146], 80.00th=[ 176], 90.00th=[ 220], 95.00th=[ 266], | 99.00th=[ 355], 99.50th=[ 405], 99.90th=[ 944], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 56, per=24.38%, avg=23.65, stdev=11.34, samples=508 iops : min= 1, max= 14, avg= 5.30, stdev= 2.93, samples=508 lat (msec) : 10=4.00%, 20=15.59%, 50=20.96%, 100=26.20%, 250=30.05% lat (msec) : 500=3.09%, 750=0.03%, 1000=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.13%, ctx=5498, 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=92.7KiB/s (94.9kB/s), 23.0KiB/s-23.4KiB/s (23.6kB/s-23.9kB/s), io=23.4MiB (24.6MB), run=257414-259094msec WRITE: bw=97.0KiB/s (99.4kB/s), 24.1KiB/s-24.6KiB/s (24.6kB/s-25.2kB/s), io=24.6MiB (25.7MB), run=257414-259094msec 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=146065: Mon Sep 7 23:30:34 2026 read: IOPS=18, BW=290KiB/s (297kB/s)(5920KiB/20428msec) clat (usec): min=34, max=272795, avg=28145.92, stdev=24447.01 lat (usec): min=35, max=272796, avg=28147.87, stdev=24446.77 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 603], | 30.00th=[ 18744], 40.00th=[ 23200], 50.00th=[ 26870], 60.00th=[ 31065], | 70.00th=[ 34866], 80.00th=[ 41157], 90.00th=[ 52167], 95.00th=[ 66323], | 99.00th=[101188], 99.50th=[127402], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 125, max= 566, per=26.15%, avg=286.12, stdev=110.41, samples=40 iops : min= 7, max= 35, avg=17.22, stdev= 7.09, samples=40 write: IOPS=19, BW=312KiB/s (319kB/s)(6368KiB/20428msec); 0 zone resets clat (usec): min=1357, max=197204, avg=24669.22, stdev=26995.19 lat (usec): min=1358, max=197205, avg=24673.49, stdev=26995.53 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1729], 10.00th=[ 2311], 20.00th=[ 4146], | 30.00th=[ 6521], 40.00th=[ 9110], 50.00th=[ 14746], 60.00th=[ 21890], | 70.00th=[ 30278], 80.00th=[ 41157], 90.00th=[ 62129], 95.00th=[ 78119], | 99.00th=[109577], 99.50th=[175113], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 84, max= 512, per=27.02%, avg=310.97, stdev=108.45, samples=40 iops : min= 5, max= 32, avg=18.80, stdev= 6.78, samples=40 lat (usec) : 50=0.78%, 100=8.07%, 250=0.52%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=4.56%, 4=5.99%, 10=12.50%, 20=13.02%, 50=39.97% lat (msec) : 100=13.02%, 250=1.04%, 500=0.13% cpu : usr=0.10%, sys=7.19%, ctx=1395, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146066: Mon Sep 7 23:30:34 2026 read: IOPS=16, BW=262KiB/s (269kB/s)(5744KiB/21888msec) clat (usec): min=40, max=307548, avg=31021.73, stdev=25831.11 lat (usec): min=40, max=307549, avg=31026.23, stdev=25833.22 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 11863], | 30.00th=[ 20841], 40.00th=[ 24773], 50.00th=[ 30016], 60.00th=[ 34341], | 70.00th=[ 38536], 80.00th=[ 47449], 90.00th=[ 56361], 95.00th=[ 70779], | 99.00th=[100140], 99.50th=[110625], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 28, max= 506, per=24.54%, avg=268.43, stdev=98.55, samples=42 iops : min= 1, max= 31, avg=16.12, stdev= 6.26, samples=42 write: IOPS=18, BW=299KiB/s (306kB/s)(6544KiB/21888msec); 0 zone resets clat (usec): min=1348, max=198128, avg=25663.32, stdev=31388.75 lat (usec): min=1350, max=198130, avg=25665.71, stdev=31388.66 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1696], 10.00th=[ 2024], 20.00th=[ 3556], | 30.00th=[ 4948], 40.00th=[ 6718], 50.00th=[ 11600], 60.00th=[ 21103], | 70.00th=[ 30540], 80.00th=[ 44303], 90.00th=[ 65799], 95.00th=[ 85459], | 99.00th=[156238], 99.50th=[164627], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 63, max= 638, per=25.92%, avg=298.35, stdev=126.70, samples=43 iops : min= 3, max= 39, avg=18.00, stdev= 8.03, samples=43 lat (usec) : 50=0.52%, 100=6.51%, 250=1.17%, 500=0.13%, 750=0.26% lat (msec) : 2=5.21%, 4=7.29%, 10=13.15%, 20=9.77%, 50=38.54% lat (msec) : 100=15.10%, 250=2.21%, 500=0.13% cpu : usr=0.05%, sys=6.59%, ctx=1472, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146067: Mon Sep 7 23:30:34 2026 read: IOPS=18, BW=292KiB/s (299kB/s)(6256KiB/21444msec) clat (usec): min=38, max=161967, avg=30171.36, stdev=24010.39 lat (usec): min=39, max=161968, avg=30173.55, stdev=24011.08 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 11994], | 30.00th=[ 18220], 40.00th=[ 22938], 50.00th=[ 27657], 60.00th=[ 32637], | 70.00th=[ 39584], 80.00th=[ 46924], 90.00th=[ 57410], 95.00th=[ 69731], | 99.00th=[119014], 99.50th=[141558], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 57, max= 503, per=26.97%, avg=295.05, stdev=94.41, samples=42 iops : min= 3, max= 31, avg=17.79, stdev= 6.02, samples=42 write: IOPS=17, BW=281KiB/s (288kB/s)(6032KiB/21444msec); 0 zone resets clat (usec): min=1432, max=142619, avg=25313.40, stdev=26753.84 lat (usec): min=1480, max=142623, avg=25315.41, stdev=26753.66 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1713], 10.00th=[ 2474], 20.00th=[ 4293], | 30.00th=[ 6390], 40.00th=[ 9110], 50.00th=[ 14353], 60.00th=[ 22414], | 70.00th=[ 32900], 80.00th=[ 44303], 90.00th=[ 62653], 95.00th=[ 82314], | 99.00th=[128451], 99.50th=[130548], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 85, max= 544, per=24.36%, avg=280.43, stdev=107.28, samples=42 iops : min= 5, max= 34, avg=16.88, stdev= 6.77, samples=42 lat (usec) : 50=0.91%, 100=7.29%, 250=0.78%, 500=0.13%, 1000=0.13% lat (msec) : 2=3.52%, 4=5.73%, 10=12.11%, 20=14.97%, 50=37.89% lat (msec) : 100=14.84%, 250=1.69% cpu : usr=0.04%, sys=7.26%, ctx=1536, 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=146068: Mon Sep 7 23:30:34 2026 read: IOPS=17, BW=280KiB/s (287kB/s)(6032KiB/21544msec) clat (usec): min=32, max=150472, avg=29189.12, stdev=25196.76 lat (usec): min=32, max=150473, avg=29191.33, stdev=25199.36 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 53], 10.00th=[ 59], 20.00th=[ 75], | 30.00th=[ 15008], 40.00th=[ 22938], 50.00th=[ 27919], 60.00th=[ 33817], | 70.00th=[ 39060], 80.00th=[ 46924], 90.00th=[ 61080], 95.00th=[ 70779], | 99.00th=[123208], 99.50th=[143655], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 127, max= 704, per=25.94%, avg=283.76, stdev=108.44, samples=41 iops : min= 7, max= 44, avg=17.07, stdev= 6.93, samples=41 write: IOPS=18, BW=290KiB/s (297kB/s)(6256KiB/21544msec); 0 zone resets clat (usec): min=1497, max=190083, avg=26259.04, stdev=29810.10 lat (usec): min=1498, max=190085, avg=26267.87, stdev=29815.63 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1778], 10.00th=[ 2311], 20.00th=[ 3818], | 30.00th=[ 5342], 40.00th=[ 8094], 50.00th=[ 15008], 60.00th=[ 22152], | 70.00th=[ 33817], 80.00th=[ 45876], 90.00th=[ 68682], 95.00th=[ 82314], | 99.00th=[141558], 99.50th=[181404], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 63, max= 574, per=25.08%, avg=288.62, stdev=125.61, samples=42 iops : min= 3, max= 35, avg=17.40, stdev= 8.04, samples=42 lat (usec) : 50=2.08%, 100=8.98%, 250=1.17%, 500=0.26%, 750=0.13% lat (msec) : 2=4.30%, 4=8.07%, 10=10.29%, 20=11.33%, 50=35.81% lat (msec) : 100=15.36%, 250=2.21% cpu : usr=0.10%, sys=6.77%, ctx=1431, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1094KiB/s (1121kB/s), 262KiB/s-292KiB/s (269kB/s-299kB/s), io=23.4MiB (24.5MB), run=20428-21888msec WRITE: bw=1151KiB/s (1179kB/s), 281KiB/s-312KiB/s (288kB/s-319kB/s), io=24.6MiB (25.8MB), run=20428-21888msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146060: Mon Sep 7 23:31:12 2026 read: IOPS=6, BW=100KiB/s (103kB/s)(5920KiB/59128msec) clat (msec): min=6, max=177, avg=31.89, stdev=30.76 lat (msec): min=6, max=177, avg=31.89, stdev=30.76 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 40], 90.00th=[ 67], 95.00th=[ 104], | 99.00th=[ 169], 99.50th=[ 178], 99.90th=[ 178], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 30, max= 383, per=26.45%, avg=106.85, stdev=65.52, samples=109 iops : min= 1, max= 23, avg= 5.94, stdev= 4.16, samples=109 write: IOPS=6, BW=108KiB/s (110kB/s)(6368KiB/59128msec); 0 zone resets clat (msec): min=43, max=474, avg=118.79, stdev=48.40 lat (msec): min=43, max=474, avg=118.79, stdev=48.40 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 64], 10.00th=[ 71], 20.00th=[ 82], | 30.00th=[ 92], 40.00th=[ 102], 50.00th=[ 109], 60.00th=[ 116], | 70.00th=[ 131], 80.00th=[ 150], 90.00th=[ 180], 95.00th=[ 209], | 99.00th=[ 284], 99.50th=[ 313], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 31, max= 224, per=25.66%, avg=109.07, stdev=39.45, samples=115 iops : min= 1, max= 14, avg= 6.08, stdev= 2.57, samples=115 lat (msec) : 10=2.47%, 20=19.53%, 50=20.05%, 100=23.70%, 250=33.20% lat (msec) : 500=1.04% cpu : usr=0.03%, sys=1.37%, ctx=1264, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146061: Mon Sep 7 23:31:12 2026 read: IOPS=6, BW=96.9KiB/s (99.3kB/s)(5744KiB/59258msec) clat (msec): min=6, max=292, avg=32.24, stdev=33.19 lat (msec): min=6, max=292, avg=32.24, stdev=33.19 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 41], 90.00th=[ 71], 95.00th=[ 114], | 99.00th=[ 148], 99.50th=[ 209], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 28, max= 415, per=26.51%, avg=107.10, stdev=77.46, samples=105 iops : min= 1, max= 25, avg= 5.94, stdev= 4.88, samples=105 write: IOPS=6, BW=110KiB/s (113kB/s)(6544KiB/59258msec); 0 zone resets clat (msec): min=37, max=289, avg=116.29, stdev=43.37 lat (msec): min=37, max=289, avg=116.30, stdev=43.37 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 63], 10.00th=[ 71], 20.00th=[ 83], | 30.00th=[ 90], 40.00th=[ 100], 50.00th=[ 108], 60.00th=[ 118], | 70.00th=[ 128], 80.00th=[ 140], 90.00th=[ 186], 95.00th=[ 207], | 99.00th=[ 243], 99.50th=[ 264], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 192, per=25.80%, avg=109.64, stdev=41.20, samples=117 iops : min= 1, max= 12, avg= 6.11, stdev= 2.69, samples=117 lat (msec) : 10=3.91%, 20=17.45%, 50=18.62%, 100=26.30%, 250=33.07% lat (msec) : 500=0.65% cpu : usr=0.03%, sys=1.27%, ctx=1237, 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=146062: Mon Sep 7 23:31:12 2026 read: IOPS=6, BW=110KiB/s (112kB/s)(6256KiB/57063msec) clat (msec): min=7, max=193, avg=27.72, stdev=23.39 lat (msec): min=7, max=193, avg=27.73, stdev=23.39 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 35], 90.00th=[ 52], 95.00th=[ 77], | 99.00th=[ 146], 99.50th=[ 171], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 31, max= 416, per=28.66%, avg=115.79, stdev=79.75, samples=107 iops : min= 1, max= 26, avg= 6.50, stdev= 5.02, samples=107 write: IOPS=6, BW=106KiB/s (108kB/s)(6032KiB/57063msec); 0 zone resets clat (msec): min=42, max=516, avg=122.22, stdev=55.82 lat (msec): min=42, max=516, avg=122.22, stdev=55.82 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 63], 10.00th=[ 71], 20.00th=[ 80], | 30.00th=[ 90], 40.00th=[ 101], 50.00th=[ 108], 60.00th=[ 123], | 70.00th=[ 133], 80.00th=[ 153], 90.00th=[ 188], 95.00th=[ 243], | 99.00th=[ 288], 99.50th=[ 388], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 31, max= 192, per=24.94%, avg=106.01, stdev=39.85, samples=112 iops : min= 1, max= 12, avg= 5.88, stdev= 2.57, samples=112 lat (msec) : 10=3.39%, 20=22.14%, 50=19.92%, 100=24.22%, 250=28.39% lat (msec) : 500=1.82%, 750=0.13% cpu : usr=0.04%, sys=1.40%, ctx=1411, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146063: Mon Sep 7 23:31:12 2026 read: IOPS=6, BW=103KiB/s (106kB/s)(6032KiB/58385msec) clat (msec): min=7, max=217, avg=30.93, stdev=27.32 lat (msec): min=7, max=217, avg=30.93, stdev=27.32 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 39], 90.00th=[ 65], 95.00th=[ 95], | 99.00th=[ 132], 99.50th=[ 165], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 31, max= 352, per=27.37%, avg=110.57, stdev=65.47, samples=106 iops : min= 1, max= 22, avg= 6.17, stdev= 4.13, samples=106 write: IOPS=6, BW=107KiB/s (110kB/s)(6256KiB/58385msec); 0 zone resets clat (msec): min=35, max=388, avg=119.26, stdev=48.03 lat (msec): min=35, max=388, avg=119.26, stdev=48.03 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 63], 10.00th=[ 70], 20.00th=[ 81], | 30.00th=[ 92], 40.00th=[ 101], 50.00th=[ 109], 60.00th=[ 122], | 70.00th=[ 133], 80.00th=[ 153], 90.00th=[ 178], 95.00th=[ 211], | 99.00th=[ 296], 99.50th=[ 338], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 31, max= 191, per=25.07%, avg=106.56, stdev=39.38, samples=115 iops : min= 1, max= 11, avg= 5.91, stdev= 2.56, samples=115 lat (msec) : 10=1.43%, 20=20.31%, 50=20.31%, 100=25.65%, 250=30.99% lat (msec) : 500=1.30% cpu : usr=0.04%, sys=1.29%, ctx=1332, 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=404KiB/s (414kB/s), 96.9KiB/s-110KiB/s (99.3kB/s-112kB/s), io=23.4MiB (24.5MB), run=57063-59258msec WRITE: bw=425KiB/s (435kB/s), 106KiB/s-110KiB/s (108kB/s-113kB/s), io=24.6MiB (25.8MB), run=57063-59258msec 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=146086: Mon Sep 7 23:31:27 2026 read: IOPS=1, BW=1380KiB/s (1413kB/s)(7168KiB/5195msec) clat (usec): min=671, max=3024.0k, avg=583373.53, stdev=1079619.40 lat (usec): min=672, max=3024.1k, avg=583376.69, stdev=1079618.95 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 668], 10.00th=[ 668], | 20.00th=[ 166724], 30.00th=[ 179307], 40.00th=[ 179307], | 50.00th=[ 212861], 60.00th=[ 233833], 70.00th=[ 233833], | 80.00th=[ 265290], 90.00th=[3036677], 95.00th=[3036677], | 99.00th=[3036677], 99.50th=[3036677], 99.90th=[3036677], | 99.95th=[3036677], 99.99th=[3036677] bw ( KiB/s): min= 2011, max= 4071, per=75.05%, avg=2439.00, stdev=912.39, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=986KiB/s (1009kB/s)(5120KiB/5195msec); 0 zone resets clat (msec): min=111, max=267, avg=197.19, stdev=59.09 lat (msec): min=111, max=267, avg=197.28, stdev=59.03 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 211], 60.00th=[ 211], | 70.00th=[ 226], 80.00th=[ 226], 90.00th=[ 268], 95.00th=[ 268], | 99.00th=[ 268], 99.50th=[ 268], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 2035, max= 4079, per=59.73%, avg=2717.67, stdev=1178.95, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=66.67%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=12.63%, ctx=616, 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=146087: Mon Sep 7 23:31:27 2026 read: IOPS=0, BW=344KiB/s (353kB/s)(2048KiB/5945msec) clat (usec): min=486, max=126182, avg=63334.51, stdev=88880.99 lat (usec): min=487, max=126185, avg=63336.24, stdev=88881.98 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 486], | 30.00th=[ 486], 40.00th=[ 486], 50.00th=[ 486], 60.00th=[126354], | 70.00th=[126354], 80.00th=[126354], 90.00th=[126354], 95.00th=[126354], | 99.00th=[126354], 99.50th=[126354], 99.90th=[126354], 99.95th=[126354], | 99.99th=[126354] bw ( KiB/s): min= 2031, max= 2039, per=62.62%, avg=2035.00, stdev= 5.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1722KiB/s (1764kB/s)(10.0MiB/5945msec); 0 zone resets clat (msec): min=72, max=3195, avg=578.68, stdev=953.61 lat (msec): min=72, max=3195, avg=578.81, stdev=953.59 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 99], | 30.00th=[ 114], 40.00th=[ 123], 50.00th=[ 174], 60.00th=[ 205], | 70.00th=[ 376], 80.00th=[ 575], 90.00th=[ 860], 95.00th=[ 3205], | 99.00th=[ 3205], 99.50th=[ 3205], 99.90th=[ 3205], 99.95th=[ 3205], | 99.99th=[ 3205] bw ( KiB/s): min= 2039, max= 8143, per=100.00%, avg=5421.67, stdev=3105.27, samples=3 iops : min= 1, max= 7, avg= 4.33, stdev= 3.06, samples=3 lat (usec) : 500=8.33% lat (msec) : 100=16.67%, 250=41.67%, 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.02%, sys=8.75%, ctx=132, 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=146088: Mon Sep 7 23:31:27 2026 read: IOPS=0, BW=975KiB/s (998kB/s)(6144KiB/6301msec) clat (usec): min=535, max=352746, avg=127649.76, stdev=152289.24 lat (usec): min=536, max=352747, avg=127651.00, stdev=152289.10 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 627], | 30.00th=[ 627], 40.00th=[ 3392], 50.00th=[ 3392], 60.00th=[149947], | 70.00th=[258999], 80.00th=[258999], 90.00th=[354419], 95.00th=[354419], | 99.00th=[354419], 99.50th=[354419], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 2039, max= 4000, per=82.85%, avg=2692.67, stdev=1132.18, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=975KiB/s (998kB/s)(6144KiB/6301msec); 0 zone resets clat (msec): min=111, max=3563, avg=904.15, stdev=1334.77 lat (msec): min=111, max=3563, avg=904.22, stdev=1334.79 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 234], 50.00th=[ 234], 60.00th=[ 388], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 3574], 95.00th=[ 3574], | 99.00th=[ 3574], 99.50th=[ 3574], 99.90th=[ 3574], 99.95th=[ 3574], | 99.99th=[ 3574] bw ( KiB/s): min= 1965, max= 2039, per=44.17%, avg=2009.75, stdev=34.60, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=16.67% lat (msec) : 4=8.33%, 250=33.33%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.37%, ctx=173, 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=146089: Mon Sep 7 23:31:27 2026 read: IOPS=0, BW=982KiB/s (1006kB/s)(5120KiB/5214msec) clat (usec): min=467, max=204899, avg=102084.19, stdev=95285.16 lat (usec): min=468, max=204900, avg=102085.21, stdev=95285.00 clat percentiles (usec): | 1.00th=[ 469], 5.00th=[ 469], 10.00th=[ 469], 20.00th=[ 469], | 30.00th=[ 938], 40.00th=[ 938], 50.00th=[141558], 60.00th=[141558], | 70.00th=[162530], 80.00th=[162530], 90.00th=[204473], 95.00th=[204473], | 99.00th=[204473], 99.50th=[204473], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 4079, max= 4079, per=100.00%, avg=4079.00, stdev= 0.00, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1375KiB/s (1408kB/s)(7168KiB/5214msec); 0 zone resets clat (msec): min=108, max=3347, avg=643.40, stdev=1194.29 lat (msec): min=109, max=3347, avg=643.49, stdev=1194.29 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 138], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 209], 60.00th=[ 247], | 70.00th=[ 247], 80.00th=[ 305], 90.00th=[ 3339], 95.00th=[ 3339], | 99.00th=[ 3339], 99.50th=[ 3339], 99.90th=[ 3339], 99.95th=[ 3339], | 99.99th=[ 3339] bw ( KiB/s): min= 2015, max= 4071, per=55.85%, avg=2541.00, stdev=1020.06, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=8.33%, 1000=8.33% lat (msec) : 250=66.67%, 500=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=8.59%, ctx=232, 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=3250KiB/s (3328kB/s), 344KiB/s-1380KiB/s (353kB/s-1413kB/s), io=20.0MiB (20.0MB), run=5195-6301msec WRITE: bw=4550KiB/s (4660kB/s), 975KiB/s-1722KiB/s (998kB/s-1764kB/s), io=28.0MiB (29.4MB), run=5195-6301msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146090: Mon Sep 7 23:31:28 2026 read: IOPS=0, BW=981KiB/s (1004kB/s)(7168KiB/7310msec) clat (msec): min=56, max=3599, avg=829.40, stdev=1259.78 lat (msec): min=56, max=3599, avg=829.40, stdev=1259.78 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 144], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 321], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 1011], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 1471, max= 2048, per=68.38%, avg=1915.33, stdev=224.47, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 write: IOPS=0, BW=700KiB/s (717kB/s)(5120KiB/7310msec); 0 zone resets clat (msec): min=125, max=411, avg=269.68, stdev=133.34 lat (msec): min=125, max=411, avg=269.87, stdev=133.38 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 127], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 1896, max= 4096, per=85.32%, avg=3346.33, stdev=1256.26, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=1.98%, ctx=72, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146091: Mon Sep 7 23:31:28 2026 read: IOPS=0, BW=288KiB/s (295kB/s)(2048KiB/7118msec) clat (msec): min=152, max=178, avg=165.88, stdev=18.28 lat (msec): min=152, max=178, avg=165.88, stdev=18.28 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 180], | 70.00th=[ 180], 80.00th=[ 180], 90.00th=[ 180], 95.00th=[ 180], | 99.00th=[ 180], 99.50th=[ 180], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 1454, max= 2027, per=62.14%, avg=1740.50, stdev=405.17, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1439KiB/s (1473kB/s)(10.0MiB/7118msec); 0 zone resets clat (msec): min=111, max=3464, avg=667.18, stdev=1019.27 lat (msec): min=112, max=3464, avg=667.26, stdev=1019.28 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 142], | 30.00th=[ 213], 40.00th=[ 266], 50.00th=[ 271], 60.00th=[ 292], | 70.00th=[ 422], 80.00th=[ 430], 90.00th=[ 1062], 95.00th=[ 3473], | 99.00th=[ 3473], 99.50th=[ 3473], 99.90th=[ 3473], 99.95th=[ 3473], | 99.99th=[ 3473] bw ( KiB/s): min= 2023, max= 4055, per=70.98%, avg=2784.00, stdev=1044.37, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 250=41.67%, 500=41.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.89%, ctx=75, 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=146092: Mon Sep 7 23:31:28 2026 read: IOPS=0, BW=901KiB/s (923kB/s)(6144KiB/6818msec) clat (msec): min=83, max=454, avg=162.48, stdev=144.61 lat (msec): min=83, max=454, avg=162.49, stdev=144.61 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 86], | 30.00th=[ 86], 40.00th=[ 96], 50.00th=[ 96], 60.00th=[ 113], | 70.00th=[ 144], 80.00th=[ 144], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 2027, max= 4047, per=96.50%, avg=2703.00, stdev=1163.95, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=901KiB/s (923kB/s)(6144KiB/6818msec); 0 zone resets clat (msec): min=167, max=3906, avg=964.81, stdev=1461.09 lat (msec): min=167, max=3906, avg=964.89, stdev=1461.09 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 255], 50.00th=[ 255], 60.00th=[ 477], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 3910], 95.00th=[ 3910], | 99.00th=[ 3910], 99.50th=[ 3910], 99.90th=[ 3910], 99.95th=[ 3910], | 99.99th=[ 3910] bw ( KiB/s): min= 2023, max= 4079, per=69.16%, avg=2712.33, stdev=1183.58, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=33.33%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.11%, ctx=67, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146093: Mon Sep 7 23:31:28 2026 read: IOPS=0, BW=737KiB/s (755kB/s)(5120KiB/6947msec) clat (msec): min=58, max=156, avg=100.77, stdev=37.32 lat (msec): min=58, max=156, avg=100.77, stdev=37.32 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 59], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 89], 60.00th=[ 89], | 70.00th=[ 115], 80.00th=[ 115], 90.00th=[ 157], 95.00th=[ 157], | 99.00th=[ 157], 99.50th=[ 157], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 2023, max= 6071, per=100.00%, avg=4047.00, stdev=2862.37, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1032KiB/s (1057kB/s)(7168KiB/6947msec); 0 zone resets clat (msec): min=171, max=4181, avg=899.34, stdev=1464.03 lat (msec): min=171, max=4181, avg=899.42, stdev=1464.04 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 205], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 262], 60.00th=[ 477], | 70.00th=[ 477], 80.00th=[ 793], 90.00th=[ 4178], 95.00th=[ 4178], | 99.00th=[ 4178], 99.50th=[ 4178], 99.90th=[ 4178], 99.95th=[ 4178], | 99.99th=[ 4178] bw ( KiB/s): min= 2023, max= 4047, per=62.07%, avg=2434.20, stdev=901.60, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=25.00%, 250=41.67%, 500=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.92%, ctx=97, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2802KiB/s (2869kB/s), 288KiB/s-981KiB/s (295kB/s-1004kB/s), io=20.0MiB (20.0MB), run=6818-7310msec WRITE: bw=3922KiB/s (4016kB/s), 700KiB/s-1439KiB/s (717kB/s-1473kB/s), io=28.0MiB (29.4MB), run=6818-7310msec 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=146100: Mon Sep 7 23:31:39 2026 read: IOPS=1, BW=4197KiB/s (4297kB/s)(12.0MiB/2928msec) clat (msec): min=250, max=1451, avg=963.21, stdev=631.09 lat (msec): min=250, max=1451, avg=963.21, stdev=631.09 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 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= 7816, max= 8094, per=100.00%, avg=7955.00, stdev=196.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.26%, ctx=82, 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=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=146101: Mon Sep 7 23:31:39 2026 read: IOPS=0, BW=3208KiB/s (3284kB/s)(4096KiB/1277msec) clat (nsec): min=136493k, max=136493k, avg=136493483.00, stdev= 0.00 lat (nsec): min=136496k, max=136496k, avg=136495934.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 138], 80.00th=[ 138], 90.00th=[ 138], 95.00th=[ 138], | 99.00th=[ 138], 99.50th=[ 138], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 5859, max= 5859, per=100.00%, avg=5859.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=6415KiB/s (6569kB/s)(8192KiB/1277msec); 0 zone resets clat (msec): min=483, max=595, avg=539.52, stdev=79.49 lat (msec): min=483, max=596, avg=540.22, stdev=79.96 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 5859, max= 5859, per=35.42%, avg=5859.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=10.74%, ctx=69, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146102: Mon Sep 7 23:31:39 2026 write: IOPS=2, BW=9373KiB/s (9598kB/s)(12.0MiB/1311msec); 0 zone resets clat (msec): min=315, max=543, avg=424.82, stdev=114.36 lat (msec): min=315, max=543, avg=425.16, stdev=114.42 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 6077, max= 8159, per=43.03%, avg=7118.00, stdev=1472.20, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=10.84%, ctx=99, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=146103: Mon Sep 7 23:31:39 2026 write: IOPS=1, BW=6203KiB/s (6352kB/s)(12.0MiB/1981msec); 0 zone resets clat (msec): min=281, max=1366, avg=649.85, stdev=620.90 lat (msec): min=282, max=1369, avg=651.24, stdev=621.83 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 300], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min=12337, max=12337, per=74.58%, avg=12337.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.10%, sys=6.72%, ctx=45, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5596KiB/s (5730kB/s), 3208KiB/s-4197KiB/s (3284kB/s-4297kB/s), io=16.0MiB (16.8MB), run=1277-2928msec WRITE: bw=16.2MiB/s (16.9MB/s), 6203KiB/s-9373KiB/s (6352kB/s-9598kB/s), io=32.0MiB (33.6MB), run=1277-1981msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146105: Mon Sep 7 23:31:40 2026 read: IOPS=1, BW=5053KiB/s (5174kB/s)(12.0MiB/2432msec) clat (msec): min=713, max=871, avg=810.24, stdev=84.98 lat (msec): min=713, max=871, avg=810.24, stdev=84.98 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8031, max= 8175, per=100.00%, avg=8103.00, stdev=101.82, 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=17.11%, ctx=511, 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=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=146106: Mon Sep 7 23:31:40 2026 read: IOPS=0, BW=1664KiB/s (1704kB/s)(4096KiB/2461msec) clat (nsec): min=549483k, max=549483k, avg=549482844.00, stdev= 0.00 lat (nsec): min=549485k, max=549485k, avg=549485462.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 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=3329KiB/s (3409kB/s)(8192KiB/2461msec); 0 zone resets clat (msec): min=503, max=1319, avg=911.75, stdev=577.23 lat (msec): min=504, max=1323, avg=914.00, stdev=579.73 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 506], 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= 8175, max= 8175, per=77.07%, 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=9.84%, ctx=171, 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=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=146107: Mon Sep 7 23:31:40 2026 write: IOPS=0, BW=3978KiB/s (4073kB/s)(12.0MiB/3089msec); 0 zone resets clat (msec): min=192, max=1533, avg=1026.24, stdev=727.32 lat (msec): min=193, max=1534, avg=1026.68, stdev=727.39 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 1351], 50.00th=[ 1351], 60.00th=[ 1351], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8159, max= 8175, per=77.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.73%, ctx=38, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=146108: Mon Sep 7 23:31:40 2026 write: IOPS=1, BW=5038KiB/s (5159kB/s)(12.0MiB/2439msec); 0 zone resets clat (msec): min=590, max=1242, avg=812.15, stdev=372.96 lat (msec): min=591, max=1243, avg=812.51, stdev=372.90 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 5777, max= 8015, per=65.01%, avg=6896.00, stdev=1582.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.04%, sys=8.45%, ctx=65, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6657KiB/s (6817kB/s), 1664KiB/s-5053KiB/s (1704kB/s-5174kB/s), io=16.0MiB (16.8MB), run=2432-2461msec WRITE: bw=10.4MiB/s (10.9MB/s), 3329KiB/s-5038KiB/s (3409kB/s-5159kB/s), io=32.0MiB (33.6MB), run=2439-3089msec