== sanity test 398b: DIO and buffer IO race ============== 10:42:15 (1789137735) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.70803 s, 8.8 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=181511: Fri Sep 11 10:44:29 2026 read: IOPS=12, BW=51.8KiB/s (53.1kB/s)(5992KiB/115573msec) clat (usec): min=40, max=693151, avg=42962.71, stdev=33944.83 lat (usec): min=41, max=693153, avg=42966.26, stdev=33946.06 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 9896], 10.00th=[ 14615], 20.00th=[ 20841], | 30.00th=[ 25560], 40.00th=[ 31327], 50.00th=[ 36963], 60.00th=[ 43254], | 70.00th=[ 50070], 80.00th=[ 58983], 90.00th=[ 76022], 95.00th=[ 94897], | 99.00th=[154141], 99.50th=[193987], 99.90th=[219153], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 7, max= 119, per=25.06%, avg=51.63, stdev=19.71, samples=226 iops : min= 1, max= 29, avg=12.26, stdev= 4.98, samples=226 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(6296KiB/115573msec); 0 zone resets clat (usec): min=1016, max=182578, avg=32252.53, stdev=33003.28 lat (usec): min=1017, max=182579, avg=32256.15, stdev=33002.85 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1237], 10.00th=[ 1647], 20.00th=[ 3523], | 30.00th=[ 6063], 40.00th=[ 13042], 50.00th=[ 23725], 60.00th=[ 32900], | 70.00th=[ 43779], 80.00th=[ 57410], 90.00th=[ 77071], 95.00th=[ 96994], | 99.00th=[147850], 99.50th=[158335], 99.90th=[175113], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 7, max= 160, per=25.11%, avg=54.24, stdev=25.47, samples=226 iops : min= 1, max= 40, avg=12.92, stdev= 6.39, samples=226 lat (usec) : 50=0.46%, 100=1.20%, 250=0.33%, 500=0.07%, 750=0.03% lat (msec) : 2=6.35%, 4=4.95%, 10=8.24%, 20=11.17%, 50=39.84% lat (msec) : 100=23.05%, 250=4.30%, 750=0.03% cpu : usr=0.09%, sys=5.26%, ctx=6683, 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=181514: Fri Sep 11 10:44:29 2026 read: IOPS=12, BW=51.2KiB/s (52.4kB/s)(5940KiB/116071msec) clat (usec): min=34, max=255166, avg=43349.89, stdev=29916.87 lat (usec): min=35, max=255167, avg=43355.44, stdev=29925.06 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 12125], 10.00th=[ 15270], 20.00th=[ 20841], | 30.00th=[ 25297], 40.00th=[ 31589], 50.00th=[ 35914], 60.00th=[ 43254], | 70.00th=[ 51643], 80.00th=[ 61604], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[164627], 99.50th=[179307], 99.90th=[250610], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 7, max= 104, per=24.63%, avg=50.74, stdev=19.28, samples=228 iops : min= 1, max= 26, avg=12.04, stdev= 4.84, samples=228 write: IOPS=13, BW=54.7KiB/s (56.0kB/s)(6348KiB/116071msec); 0 zone resets clat (usec): min=984, max=651168, avg=32312.55, stdev=35483.41 lat (usec): min=985, max=651169, avg=32315.28, stdev=35483.96 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1287], 10.00th=[ 1729], 20.00th=[ 3556], | 30.00th=[ 7046], 40.00th=[ 14615], 50.00th=[ 23200], 60.00th=[ 31589], | 70.00th=[ 42730], 80.00th=[ 57410], 90.00th=[ 77071], 95.00th=[ 92799], | 99.00th=[141558], 99.50th=[158335], 99.90th=[214959], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 7, max= 127, per=25.02%, avg=54.05, stdev=23.24, samples=228 iops : min= 1, max= 31, avg=12.88, stdev= 5.85, samples=228 lat (usec) : 50=0.42%, 100=1.14%, 250=0.16%, 500=0.03%, 1000=0.07% lat (msec) : 2=6.18%, 4=5.31%, 10=7.06%, 20=11.56%, 50=39.75% lat (msec) : 100=24.38%, 250=3.84%, 500=0.07%, 750=0.03% cpu : usr=0.08%, sys=5.31%, ctx=6771, 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=181516: Fri Sep 11 10:44:29 2026 read: IOPS=13, BW=52.8KiB/s (54.1kB/s)(6028KiB/114097msec) clat (usec): min=35, max=192051, avg=41777.92, stdev=26541.14 lat (usec): min=36, max=192052, avg=41779.49, stdev=26541.04 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10683], 10.00th=[ 15795], 20.00th=[ 21627], | 30.00th=[ 25297], 40.00th=[ 30278], 50.00th=[ 36439], 60.00th=[ 42730], | 70.00th=[ 50594], 80.00th=[ 60556], 90.00th=[ 76022], 95.00th=[ 88605], | 99.00th=[141558], 99.50th=[156238], 99.90th=[187696], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 7, max= 119, per=25.64%, avg=52.81, stdev=21.31, samples=224 iops : min= 1, max= 29, avg=12.56, stdev= 5.37, samples=224 write: IOPS=13, BW=54.9KiB/s (56.2kB/s)(6260KiB/114097msec); 0 zone resets clat (usec): min=959, max=738938, avg=32402.04, stdev=38555.59 lat (usec): min=961, max=738940, avg=32404.15, stdev=38555.52 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1205], 10.00th=[ 1516], 20.00th=[ 3097], | 30.00th=[ 5276], 40.00th=[ 11469], 50.00th=[ 21627], 60.00th=[ 30802], | 70.00th=[ 41681], 80.00th=[ 57410], 90.00th=[ 80217], 95.00th=[102237], | 99.00th=[145753], 99.50th=[158335], 99.90th=[198181], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 7, max= 127, per=25.27%, avg=54.58, stdev=23.11, samples=225 iops : min= 1, max= 31, avg=13.00, stdev= 5.82, samples=225 lat (usec) : 50=0.39%, 100=1.53%, 250=0.16%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=6.67%, 4=5.66%, 10=7.39%, 20=10.55%, 50=40.33% lat (msec) : 100=22.98%, 250=4.13%, 750=0.03% cpu : usr=0.08%, sys=5.18%, ctx=6501, 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=181517: Fri Sep 11 10:44:29 2026 read: IOPS=13, BW=52.2KiB/s (53.4kB/s)(6052KiB/116021msec) clat (usec): min=43, max=269506, avg=40836.22, stdev=27640.49 lat (usec): min=44, max=269507, avg=40840.70, stdev=27639.49 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10683], 10.00th=[ 14877], 20.00th=[ 19530], | 30.00th=[ 24249], 40.00th=[ 28967], 50.00th=[ 34866], 60.00th=[ 41681], | 70.00th=[ 50070], 80.00th=[ 58459], 90.00th=[ 73925], 95.00th=[ 90702], | 99.00th=[130548], 99.50th=[160433], 99.90th=[223347], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 119, per=25.39%, avg=52.31, stdev=19.60, samples=225 iops : min= 1, max= 29, avg=12.44, stdev= 4.91, samples=225 write: IOPS=13, BW=53.7KiB/s (55.0kB/s)(6236KiB/116021msec); 0 zone resets clat (usec): min=1024, max=803274, avg=34504.68, stdev=40159.92 lat (usec): min=1024, max=803275, avg=34507.77, stdev=40159.11 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1287], 10.00th=[ 1958], 20.00th=[ 3523], | 30.00th=[ 6849], 40.00th=[ 16319], 50.00th=[ 24773], 60.00th=[ 33817], | 70.00th=[ 44827], 80.00th=[ 58459], 90.00th=[ 80217], 95.00th=[105382], | 99.00th=[154141], 99.50th=[175113], 99.90th=[316670], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 127, per=24.90%, avg=53.79, stdev=22.38, samples=226 iops : min= 1, max= 31, avg=12.80, stdev= 5.61, samples=226 lat (usec) : 50=0.29%, 100=1.53%, 250=0.26%, 500=0.07%, 750=0.10% lat (msec) : 2=5.27%, 4=5.86%, 10=6.87%, 20=13.02%, 50=38.83% lat (msec) : 100=23.34%, 250=4.46%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=5.19%, ctx=6724, 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=207KiB/s (212kB/s), 51.2KiB/s-52.8KiB/s (52.4kB/s-54.1kB/s), io=23.4MiB (24.6MB), run=114097-116071msec WRITE: bw=217KiB/s (222kB/s), 53.7KiB/s-54.9KiB/s (55.0kB/s-56.2kB/s), io=24.6MiB (25.7MB), run=114097-116071msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181512: Fri Sep 11 10:45:15 2026 read: IOPS=9, BW=37.3KiB/s (38.2kB/s)(5992KiB/160564msec) clat (msec): min=5, max=681, avg=42.13, stdev=43.08 lat (msec): min=5, max=681, avg=42.13, stdev=43.08 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 46], 80.00th=[ 64], 90.00th=[ 95], 95.00th=[ 125], | 99.00th=[ 192], 99.50th=[ 211], 99.90th=[ 422], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 152, per=25.75%, avg=38.11, stdev=26.75, samples=307 iops : min= 1, max= 38, avg= 8.88, stdev= 6.73, samples=307 write: IOPS=9, BW=39.2KiB/s (40.2kB/s)(6296KiB/160564msec); 0 zone resets clat (msec): min=8, max=417, avg=61.67, stdev=43.91 lat (msec): min=8, max=417, avg=61.67, stdev=43.91 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 72], 80.00th=[ 93], 90.00th=[ 116], 95.00th=[ 144], | 99.00th=[ 224], 99.50th=[ 259], 99.90th=[ 351], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7, max= 160, per=25.42%, avg=39.41, stdev=25.21, samples=312 iops : min= 1, max= 40, avg= 9.21, stdev= 6.35, samples=312 lat (msec) : 10=3.06%, 20=17.90%, 50=41.63%, 100=24.77%, 250=12.27% lat (msec) : 500=0.33%, 750=0.03% cpu : usr=0.05%, sys=1.79%, ctx=4824, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181513: Fri Sep 11 10:45:15 2026 read: IOPS=9, BW=37.1KiB/s (38.0kB/s)(5940KiB/159902msec) clat (msec): min=4, max=749, avg=41.82, stdev=41.71 lat (msec): min=4, max=749, avg=41.82, stdev=41.71 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 62], 90.00th=[ 92], 95.00th=[ 120], | 99.00th=[ 188], 99.50th=[ 222], 99.90th=[ 363], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 152, per=25.73%, avg=38.08, stdev=26.67, samples=304 iops : min= 1, max= 38, avg= 8.87, stdev= 6.70, samples=304 write: IOPS=9, BW=39.7KiB/s (40.7kB/s)(6348KiB/159902msec); 0 zone resets clat (msec): min=9, max=369, avg=61.40, stdev=42.78 lat (msec): min=10, max=369, avg=61.40, stdev=42.78 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 41], 50.00th=[ 50], 60.00th=[ 61], | 70.00th=[ 74], 80.00th=[ 91], 90.00th=[ 115], 95.00th=[ 138], | 99.00th=[ 222], 99.50th=[ 264], 99.90th=[ 351], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 7, max= 144, per=25.45%, avg=39.45, stdev=24.43, samples=313 iops : min= 1, max= 36, avg= 9.22, stdev= 6.15, samples=313 lat (msec) : 10=2.90%, 20=16.70%, 50=42.55%, 100=26.40%, 250=11.13% lat (msec) : 500=0.29%, 750=0.03% cpu : usr=0.05%, sys=1.82%, ctx=4813, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181515: Fri Sep 11 10:45:15 2026 read: IOPS=9, BW=37.3KiB/s (38.1kB/s)(6028KiB/161803msec) clat (msec): min=5, max=341, avg=42.50, stdev=37.69 lat (msec): min=5, max=341, avg=42.50, stdev=37.69 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 63], 90.00th=[ 91], 95.00th=[ 121], | 99.00th=[ 167], 99.50th=[ 211], 99.90th=[ 321], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 168, per=25.24%, avg=37.35, stdev=24.92, samples=314 iops : min= 1, max= 42, avg= 8.69, stdev= 6.28, samples=314 write: IOPS=9, BW=38.7KiB/s (39.6kB/s)(6260KiB/161803msec); 0 zone resets clat (msec): min=13, max=754, avg=62.21, stdev=46.61 lat (msec): min=13, max=754, avg=62.21, stdev=46.61 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 40], 50.00th=[ 50], 60.00th=[ 61], | 70.00th=[ 75], 80.00th=[ 90], 90.00th=[ 120], 95.00th=[ 144], | 99.00th=[ 224], 99.50th=[ 255], 99.90th=[ 380], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 127, per=24.86%, avg=38.53, stdev=25.67, samples=316 iops : min= 1, max= 31, avg= 8.99, stdev= 6.46, samples=316 lat (msec) : 10=2.96%, 20=14.81%, 50=43.00%, 100=27.60%, 250=11.23% lat (msec) : 500=0.36%, 1000=0.03% cpu : usr=0.06%, sys=1.76%, ctx=4902, 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=181518: Fri Sep 11 10:45:15 2026 read: IOPS=9, BW=37.9KiB/s (38.8kB/s)(6052KiB/159791msec) clat (msec): min=5, max=425, avg=40.69, stdev=36.83 lat (msec): min=5, max=425, avg=40.70, stdev=36.84 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 46], 80.00th=[ 61], 90.00th=[ 88], 95.00th=[ 114], | 99.00th=[ 184], 99.50th=[ 209], 99.90th=[ 271], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7, max= 152, per=26.06%, avg=38.57, stdev=27.39, samples=306 iops : min= 1, max= 38, avg= 9.00, stdev= 6.89, samples=306 write: IOPS=9, BW=39.0KiB/s (39.0kB/s)(6236KiB/159791msec); 0 zone resets clat (msec): min=8, max=786, avg=62.74, stdev=46.51 lat (msec): min=8, max=786, avg=62.75, stdev=46.51 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 51], 60.00th=[ 61], | 70.00th=[ 73], 80.00th=[ 91], 90.00th=[ 120], 95.00th=[ 144], | 99.00th=[ 218], 99.50th=[ 251], 99.90th=[ 418], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 136, per=25.06%, avg=38.85, stdev=24.22, samples=313 iops : min= 1, max= 34, avg= 9.07, stdev= 6.10, samples=313 lat (msec) : 10=2.67%, 20=16.93%, 50=41.83%, 100=27.12%, 250=11.17% lat (msec) : 500=0.26%, 1000=0.03% cpu : usr=0.06%, sys=1.77%, ctx=4756, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=148KiB/s (152kB/s), 37.1KiB/s-37.9KiB/s (38.0kB/s-38.8kB/s), io=23.4MiB (24.6MB), run=159791-161803msec WRITE: bw=155KiB/s (159kB/s), 38.7KiB/s-39.7KiB/s (39.6kB/s-40.7kB/s), io=24.6MiB (25.7MB), run=159791-161803msec 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=181562: Fri Sep 11 10:45:52 2026 read: IOPS=13, BW=217KiB/s (222kB/s)(5920KiB/27291msec) clat (usec): min=49, max=172104, avg=39901.40, stdev=25598.94 lat (usec): min=49, max=172106, avg=39902.64, stdev=25598.92 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 66], 10.00th=[ 14353], 20.00th=[ 21890], | 30.00th=[ 25822], 40.00th=[ 30802], 50.00th=[ 36439], 60.00th=[ 41157], | 70.00th=[ 47973], 80.00th=[ 55837], 90.00th=[ 69731], 95.00th=[ 82314], | 99.00th=[132645], 99.50th=[143655], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 93, max= 445, per=24.86%, avg=217.26, stdev=78.89, samples=54 iops : min= 5, max= 27, avg=12.85, stdev= 4.93, samples=54 write: IOPS=14, BW=233KiB/s (239kB/s)(6368KiB/27291msec); 0 zone resets clat (usec): min=1525, max=150330, avg=30802.21, stdev=29535.89 lat (usec): min=1526, max=150333, avg=30804.96, stdev=29535.52 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2311], 10.00th=[ 3458], 20.00th=[ 5211], | 30.00th=[ 7570], 40.00th=[ 11994], 50.00th=[ 22152], 60.00th=[ 32113], | 70.00th=[ 43779], 80.00th=[ 54789], 90.00th=[ 68682], 95.00th=[ 86508], | 99.00th=[133694], 99.50th=[139461], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 63, max= 510, per=25.34%, avg=232.85, stdev=86.58, samples=54 iops : min= 3, max= 31, avg=13.85, stdev= 5.43, samples=54 lat (usec) : 50=0.26%, 100=3.26%, 250=0.39% lat (msec) : 2=2.21%, 4=4.69%, 10=12.11%, 20=10.03%, 50=41.28% lat (msec) : 100=22.79%, 250=2.99% cpu : usr=0.08%, sys=6.83%, ctx=1820, 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=181563: Fri Sep 11 10:45:52 2026 read: IOPS=13, BW=210KiB/s (215kB/s)(5744KiB/27358msec) clat (usec): min=39, max=131599, avg=38838.89, stdev=23653.05 lat (usec): min=39, max=131601, avg=38841.14, stdev=23652.27 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 83], 10.00th=[ 12780], 20.00th=[ 20317], | 30.00th=[ 24773], 40.00th=[ 30802], 50.00th=[ 35914], 60.00th=[ 42730], | 70.00th=[ 49021], 80.00th=[ 56886], 90.00th=[ 68682], 95.00th=[ 77071], | 99.00th=[117965], 99.50th=[130548], 99.90th=[131597], 99.95th=[131597], | 99.99th=[131597] bw ( KiB/s): min= 31, max= 378, per=23.82%, avg=208.15, stdev=78.45, samples=54 iops : min= 1, max= 23, avg=12.30, stdev= 4.97, samples=54 write: IOPS=14, BW=239KiB/s (245kB/s)(6544KiB/27358msec); 0 zone resets clat (usec): min=1395, max=172608, avg=32215.61, stdev=31001.53 lat (usec): min=1396, max=172609, avg=32221.07, stdev=31002.33 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2180], 10.00th=[ 3032], 20.00th=[ 5342], | 30.00th=[ 9372], 40.00th=[ 16057], 50.00th=[ 23200], 60.00th=[ 30278], | 70.00th=[ 40633], 80.00th=[ 56886], 90.00th=[ 71828], 95.00th=[ 92799], | 99.00th=[135267], 99.50th=[145753], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 124, max= 540, per=26.00%, avg=238.91, stdev=89.55, samples=54 iops : min= 7, max= 33, avg=14.22, stdev= 5.59, samples=54 lat (usec) : 50=0.26%, 100=2.34%, 250=0.78%, 500=0.26%, 1000=0.13% lat (msec) : 2=2.21%, 4=6.64%, 10=8.20%, 20=11.72%, 50=41.02% lat (msec) : 100=23.31%, 250=3.12% cpu : usr=0.07%, sys=6.77%, ctx=1839, 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=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=181564: Fri Sep 11 10:45:52 2026 read: IOPS=14, BW=228KiB/s (234kB/s)(6256KiB/27404msec) clat (usec): min=39, max=192190, avg=39952.27, stdev=25380.15 lat (usec): min=40, max=192191, avg=39955.04, stdev=25381.34 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 10814], 20.00th=[ 21365], | 30.00th=[ 26870], 40.00th=[ 32113], 50.00th=[ 37487], 60.00th=[ 43254], | 70.00th=[ 50594], 80.00th=[ 58459], 90.00th=[ 68682], 95.00th=[ 79168], | 99.00th=[122160], 99.50th=[143655], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 31, max= 447, per=26.27%, avg=229.61, stdev=83.37, samples=54 iops : min= 1, max= 27, avg=13.63, stdev= 5.19, samples=54 write: IOPS=13, BW=220KiB/s (225kB/s)(6032KiB/27404msec); 0 zone resets clat (usec): min=1469, max=217666, avg=31071.45, stdev=30203.37 lat (usec): min=1471, max=217668, avg=31075.08, stdev=30202.09 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2008], 10.00th=[ 3195], 20.00th=[ 5538], | 30.00th=[ 9634], 40.00th=[ 16712], 50.00th=[ 23987], 60.00th=[ 31327], | 70.00th=[ 40633], 80.00th=[ 52167], 90.00th=[ 69731], 95.00th=[ 83362], | 99.00th=[123208], 99.50th=[204473], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 31, max= 540, per=23.80%, avg=218.76, stdev=99.69, samples=54 iops : min= 1, max= 33, avg=12.96, stdev= 6.28, samples=54 lat (usec) : 50=0.52%, 100=3.65%, 250=0.52%, 500=0.13% lat (msec) : 2=2.47%, 4=3.78%, 10=9.38%, 20=10.55%, 50=42.58% lat (msec) : 100=23.70%, 250=2.73% cpu : usr=0.07%, sys=7.10%, ctx=1858, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181565: Fri Sep 11 10:45:52 2026 read: IOPS=13, BW=224KiB/s (229kB/s)(6032KiB/26985msec) clat (usec): min=38, max=160065, avg=38190.53, stdev=27215.55 lat (usec): min=39, max=160066, avg=38191.90, stdev=27215.48 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 61], 10.00th=[ 91], 20.00th=[ 18482], | 30.00th=[ 24249], 40.00th=[ 29492], 50.00th=[ 33817], 60.00th=[ 41157], | 70.00th=[ 47973], 80.00th=[ 58459], 90.00th=[ 70779], 95.00th=[ 86508], | 99.00th=[128451], 99.50th=[135267], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 62, max= 413, per=25.32%, avg=221.30, stdev=87.89, samples=53 iops : min= 3, max= 25, avg=13.11, stdev= 5.56, samples=53 write: IOPS=14, BW=232KiB/s (237kB/s)(6256KiB/26985msec); 0 zone resets clat (usec): min=1646, max=203577, avg=31662.59, stdev=31671.07 lat (usec): min=1648, max=203580, avg=31664.78, stdev=31671.04 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2507], 10.00th=[ 3261], 20.00th=[ 5407], | 30.00th=[ 8586], 40.00th=[ 14484], 50.00th=[ 21890], 60.00th=[ 31065], | 70.00th=[ 40633], 80.00th=[ 49546], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[143655], 99.50th=[164627], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 32, max= 415, per=25.10%, avg=230.66, stdev=89.94, samples=53 iops : min= 2, max= 25, avg=13.72, stdev= 5.63, samples=53 lat (usec) : 50=0.39%, 100=4.56%, 250=1.17%, 500=0.39%, 750=0.39% lat (msec) : 2=1.17%, 4=5.73%, 10=9.90%, 20=10.81%, 50=41.80% lat (msec) : 100=19.92%, 250=3.78% cpu : usr=0.08%, sys=6.75%, ctx=1769, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=874KiB/s (895kB/s), 210KiB/s-228KiB/s (215kB/s-234kB/s), io=23.4MiB (24.5MB), run=26985-27404msec WRITE: bw=920KiB/s (942kB/s), 220KiB/s-239KiB/s (225kB/s-245kB/s), io=24.6MiB (25.8MB), run=26985-27404msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181566: Fri Sep 11 10:46:03 2026 read: IOPS=9, BW=158KiB/s (161kB/s)(5920KiB/37563msec) clat (msec): min=6, max=214, avg=40.73, stdev=35.89 lat (msec): min=6, max=214, avg=40.73, stdev=35.90 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 91], 95.00th=[ 121], | 99.00th=[ 186], 99.50th=[ 194], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 31, max= 447, per=24.77%, avg=157.78, stdev=90.78, samples=74 iops : min= 1, max= 27, avg= 9.09, stdev= 5.80, samples=74 write: IOPS=10, BW=170KiB/s (174kB/s)(6368KiB/37563msec); 0 zone resets clat (msec): min=11, max=219, avg=55.87, stdev=32.42 lat (msec): min=11, max=219, avg=55.87, stdev=32.42 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 47], 60.00th=[ 53], | 70.00th=[ 64], 80.00th=[ 79], 90.00th=[ 104], 95.00th=[ 121], | 99.00th=[ 159], 99.50th=[ 190], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 31, max= 416, per=25.71%, avg=172.23, stdev=86.65, samples=73 iops : min= 1, max= 26, avg=10.00, stdev= 5.52, samples=73 lat (msec) : 10=1.43%, 20=14.32%, 50=49.87%, 100=25.00%, 250=9.38% cpu : usr=0.05%, sys=2.06%, ctx=1176, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181567: Fri Sep 11 10:46:03 2026 read: IOPS=9, BW=153KiB/s (157kB/s)(5744KiB/37426msec) clat (msec): min=7, max=208, avg=37.70, stdev=33.93 lat (msec): min=7, max=208, avg=37.70, stdev=33.93 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 31], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 80], 95.00th=[ 115], | 99.00th=[ 184], 99.50th=[ 199], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 21, max= 384, per=24.72%, avg=157.45, stdev=93.79, samples=71 iops : min= 1, max= 24, avg= 9.08, stdev= 5.98, samples=71 write: IOPS=10, BW=175KiB/s (179kB/s)(6544KiB/37426msec); 0 zone resets clat (msec): min=15, max=283, avg=57.71, stdev=36.91 lat (msec): min=15, max=283, avg=57.71, stdev=36.91 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 25], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 47], 60.00th=[ 55], | 70.00th=[ 68], 80.00th=[ 83], 90.00th=[ 107], 95.00th=[ 126], | 99.00th=[ 186], 99.50th=[ 209], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 415, per=25.99%, avg=174.14, stdev=92.08, samples=73 iops : min= 1, max= 25, avg=10.12, stdev= 5.84, samples=73 lat (msec) : 10=0.91%, 20=15.36%, 50=49.87%, 100=24.09%, 250=9.64% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.16%, ctx=1151, 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=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=181568: Fri Sep 11 10:46:03 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(6256KiB/37226msec) clat (msec): min=6, max=222, avg=39.10, stdev=32.53 lat (msec): min=6, max=222, avg=39.10, stdev=32.53 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 55], 90.00th=[ 79], 95.00th=[ 112], | 99.00th=[ 161], 99.50th=[ 188], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 445, per=26.50%, avg=168.81, stdev=102.60, samples=73 iops : min= 1, max= 27, avg= 9.79, stdev= 6.49, samples=73 write: IOPS=10, BW=162KiB/s (166kB/s)(6032KiB/37226msec); 0 zone resets clat (msec): min=17, max=221, avg=57.83, stdev=35.24 lat (msec): min=17, max=221, avg=57.84, stdev=35.24 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 36], 40.00th=[ 40], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 65], 80.00th=[ 83], 90.00th=[ 109], 95.00th=[ 127], | 99.00th=[ 176], 99.50th=[ 213], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 31, max= 384, per=23.96%, avg=160.55, stdev=84.74, samples=73 iops : min= 1, max= 24, avg= 9.26, stdev= 5.45, samples=73 lat (msec) : 10=0.78%, 20=16.15%, 50=48.57%, 100=24.48%, 250=10.03% cpu : usr=0.03%, sys=2.10%, ctx=1115, 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=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=181569: Fri Sep 11 10:46:03 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(6032KiB/37420msec) clat (msec): min=6, max=207, avg=39.32, stdev=33.28 lat (msec): min=6, max=207, avg=39.32, stdev=33.28 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 55], 90.00th=[ 85], 95.00th=[ 113], | 99.00th=[ 165], 99.50th=[ 184], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 22, max= 447, per=25.15%, avg=160.18, stdev=98.90, samples=73 iops : min= 1, max= 27, avg= 9.25, stdev= 6.23, samples=73 write: IOPS=10, BW=167KiB/s (171kB/s)(6256KiB/37420msec); 0 zone resets clat (msec): min=10, max=292, avg=56.80, stdev=37.53 lat (msec): min=10, max=292, avg=56.81, stdev=37.54 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 40], 50.00th=[ 43], 60.00th=[ 52], | 70.00th=[ 62], 80.00th=[ 79], 90.00th=[ 112], 95.00th=[ 138], | 99.00th=[ 178], 99.50th=[ 186], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 384, per=24.76%, avg=165.88, stdev=87.30, samples=73 iops : min= 1, max= 24, avg= 9.60, stdev= 5.59, samples=73 lat (msec) : 10=1.30%, 20=14.71%, 50=51.30%, 100=22.40%, 250=10.16% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.17%, ctx=1192, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=638KiB/s (653kB/s), 153KiB/s-168KiB/s (157kB/s-172kB/s), io=23.4MiB (24.5MB), run=37226-37563msec WRITE: bw=671KiB/s (687kB/s), 162KiB/s-175KiB/s (166kB/s-179kB/s), io=24.6MiB (25.8MB), run=37226-37563msec 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=181584: Fri Sep 11 10:46:16 2026 read: IOPS=2, BW=2225KiB/s (2279kB/s)(7168KiB/3221msec) clat (usec): min=1095, max=281608, avg=151741.96, stdev=107128.84 lat (usec): min=1096, max=281609, avg=151743.49, stdev=107129.00 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1090], 10.00th=[ 1090], 20.00th=[ 49021], | 30.00th=[111674], 40.00th=[111674], 50.00th=[166724], 60.00th=[173016], | 70.00th=[173016], 80.00th=[278922], 90.00th=[283116], 95.00th=[283116], | 99.00th=[283116], 99.50th=[283116], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 1976, max= 3835, per=52.86%, avg=2380.20, stdev=813.77, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1590KiB/s (1628kB/s)(5120KiB/3221msec); 0 zone resets clat (msec): min=248, max=599, avg=422.31, stdev=165.28 lat (msec): min=248, max=600, avg=422.40, stdev=165.29 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 592], 80.00th=[ 592], 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= 2003, max= 4079, per=42.99%, avg=2710.00, stdev=1185.80, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 2=8.33%, 50=8.33%, 250=33.33%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=24.81%, ctx=231, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181585: Fri Sep 11 10:46:16 2026 read: IOPS=0, BW=450KiB/s (461kB/s)(2048KiB/4548msec) clat (msec): min=206, max=439, avg=323.03, stdev=165.04 lat (msec): min=206, max=439, avg=323.03, stdev=165.03 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 439], 95.00th=[ 439], | 99.00th=[ 439], 99.50th=[ 439], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 1861, max= 2039, per=43.30%, avg=1950.00, stdev=125.87, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2252KiB/s (2306kB/s)(10.0MiB/4548msec); 0 zone resets clat (msec): min=179, max=631, avg=374.12, stdev=169.37 lat (msec): min=179, max=631, avg=374.20, stdev=169.36 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 184], | 30.00th=[ 253], 40.00th=[ 271], 50.00th=[ 279], 60.00th=[ 388], | 70.00th=[ 422], 80.00th=[ 523], 90.00th=[ 617], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1976, max= 4071, per=37.48%, avg=2362.67, stdev=837.35, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (msec) : 250=25.00%, 500=50.00%, 750=25.00% cpu : usr=0.00%, sys=20.28%, ctx=208, 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=181586: Fri Sep 11 10:46:16 2026 read: IOPS=1, BW=1796KiB/s (1839kB/s)(6144KiB/3421msec) clat (usec): min=534, max=342083, avg=155380.43, stdev=132395.44 lat (usec): min=535, max=342083, avg=155381.55, stdev=132395.19 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 2057], | 30.00th=[ 2057], 40.00th=[181404], 50.00th=[181404], 60.00th=[198181], | 70.00th=[208667], 80.00th=[208667], 90.00th=[341836], 95.00th=[341836], | 99.00th=[341836], 99.50th=[341836], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 2039, max= 6144, per=75.67%, avg=3407.33, stdev=2370.02, samples=3 iops : min= 1, max= 6, avg= 2.67, stdev= 2.89, samples=3 write: IOPS=1, BW=1796KiB/s (1839kB/s)(6144KiB/3421msec); 0 zone resets clat (msec): min=271, max=620, avg=386.10, stdev=125.05 lat (msec): min=271, max=620, avg=386.18, stdev=125.06 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 388], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2003, max= 3953, per=39.83%, avg=2510.75, stdev=961.70, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=25.00%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=25.26%, ctx=218, 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=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=181587: Fri Sep 11 10:46:16 2026 read: IOPS=1, BW=1245KiB/s (1275kB/s)(5120KiB/4112msec) clat (usec): min=472, max=565809, avg=227882.10, stdev=209472.02 lat (usec): min=474, max=565810, avg=227883.23, stdev=209472.00 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], 20.00th=[ 474], | 30.00th=[149947], 40.00th=[149947], 50.00th=[173016], 60.00th=[173016], | 70.00th=[250610], 80.00th=[250610], 90.00th=[566232], 95.00th=[566232], | 99.00th=[566232], 99.50th=[566232], 99.90th=[566232], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 2039, max= 6119, per=90.58%, avg=4079.00, stdev=2885.00, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1743KiB/s (1785kB/s)(7168KiB/4112msec); 0 zone resets clat (msec): min=127, max=688, avg=400.64, stdev=236.01 lat (msec): min=127, max=688, avg=400.97, stdev=236.13 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 159], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 489], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 651], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1976, max= 6107, per=44.97%, avg=2834.60, stdev=1829.55, samples=5 iops : min= 1, max= 5, avg= 2.00, stdev= 1.73, samples=5 lat (usec) : 500=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=25.00% cpu : usr=0.00%, sys=19.24%, ctx=220, 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=4503KiB/s (4611kB/s), 450KiB/s-2225KiB/s (461kB/s-2279kB/s), io=20.0MiB (20.0MB), run=3221-4548msec WRITE: bw=6304KiB/s (6456kB/s), 1590KiB/s-2252KiB/s (1628kB/s-2306kB/s), io=28.0MiB (29.4MB), run=3221-4548msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181579: Fri Sep 11 10:46:16 2026 read: IOPS=2, BW=2191KiB/s (2244kB/s)(7168KiB/3271msec) clat (msec): min=91, max=222, avg=153.61, stdev=55.72 lat (msec): min=91, max=222, avg=153.61, stdev=55.72 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 99], | 30.00th=[ 103], 40.00th=[ 103], 50.00th=[ 169], 60.00th=[ 182], | 70.00th=[ 182], 80.00th=[ 211], 90.00th=[ 224], 95.00th=[ 224], | 99.00th=[ 224], 99.50th=[ 224], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 1965, max= 4173, per=58.05%, avg=2555.00, stdev=1079.26, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1565KiB/s (1603kB/s)(5120KiB/3271msec); 0 zone resets clat (msec): min=193, max=579, avg=434.39, stdev=158.22 lat (msec): min=193, max=579, avg=434.50, stdev=158.27 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1965, max= 3976, per=43.17%, avg=2660.00, stdev=1140.29, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=50.00%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=7.00%, ctx=98, 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=181580: Fri Sep 11 10:46:16 2026 read: IOPS=0, BW=453KiB/s (463kB/s)(2048KiB/4525msec) clat (msec): min=85, max=801, avg=443.33, stdev=506.34 lat (msec): min=85, max=801, avg=443.33, stdev=506.34 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 86], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 86], 60.00th=[ 802], | 70.00th=[ 802], 80.00th=[ 802], 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= 1383, max= 2015, per=38.60%, avg=1699.00, stdev=446.89, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2263KiB/s (2317kB/s)(10.0MiB/4525msec); 0 zone resets clat (msec): min=104, max=532, avg=351.23, stdev=121.14 lat (msec): min=104, max=532, avg=351.30, stdev=121.14 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 300], 50.00th=[ 342], 60.00th=[ 351], | 70.00th=[ 401], 80.00th=[ 405], 90.00th=[ 502], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 1988, max= 4096, per=59.41%, avg=3661.00, stdev=935.36, samples=5 iops : min= 1, max= 4, avg= 2.80, stdev= 1.10, samples=5 lat (msec) : 100=8.33%, 250=8.33%, 500=58.33%, 750=16.67%, 1000=8.33% cpu : usr=0.04%, sys=7.71%, ctx=121, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=181581: Fri Sep 11 10:46:16 2026 read: IOPS=1, BW=1320KiB/s (1352kB/s)(6144KiB/4653msec) clat (msec): min=60, max=720, avg=345.14, stdev=232.61 lat (msec): min=60, max=720, avg=345.15, stdev=232.61 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 236], 50.00th=[ 236], 60.00th=[ 342], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1988, max= 4055, per=61.24%, avg=2695.33, stdev=1177.83, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1320KiB/s (1352kB/s)(6144KiB/4653msec); 0 zone resets clat (msec): min=107, max=1027, avg=409.63, stdev=348.22 lat (msec): min=107, max=1027, avg=409.73, stdev=348.25 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 123], | 30.00th=[ 123], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 330], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 2015, max= 2813, per=36.17%, avg=2228.75, stdev=389.75, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 2000=8.33% cpu : usr=0.02%, sys=4.82%, ctx=96, 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=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=181582: Fri Sep 11 10:46:16 2026 read: IOPS=1, BW=1312KiB/s (1344kB/s)(5120KiB/3902msec) clat (msec): min=91, max=1036, avg=348.79, stdev=405.54 lat (msec): min=91, max=1036, avg=348.80, stdev=405.54 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 91], | 30.00th=[ 94], 40.00th=[ 94], 50.00th=[ 124], 60.00th=[ 124], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1988, max= 4031, per=61.06%, avg=2687.33, stdev=1163.97, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1837KiB/s (1881kB/s)(7168KiB/3902msec); 0 zone resets clat (msec): min=90, max=519, avg=292.21, stdev=159.08 lat (msec): min=90, max=519, avg=292.38, stdev=158.98 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 140], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 326], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 426], 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= 1370, max= 4079, per=46.85%, avg=2886.75, stdev=1390.29, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=25.00%, 250=25.00%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.03%, sys=9.66%, ctx=180, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4401KiB/s (4507kB/s), 453KiB/s-2191KiB/s (463kB/s-2244kB/s), io=20.0MiB (20.0MB), run=3271-4653msec WRITE: bw=6162KiB/s (6310kB/s), 1320KiB/s-2263KiB/s (1352kB/s-2317kB/s), io=28.0MiB (29.4MB), run=3271-4653msec 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=181594: Fri Sep 11 10:46:27 2026 read: IOPS=1, BW=5540KiB/s (5673kB/s)(12.0MiB/2218msec) clat (msec): min=554, max=795, avg=701.19, stdev=128.59 lat (msec): min=554, max=795, avg=701.19, stdev=128.59 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 793], 80.00th=[ 793], 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= 8126, max= 8143, per=100.00%, avg=8134.50, stdev=12.02, 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=22.19%, ctx=306, 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=181595: Fri Sep 11 10:46:27 2026 read: IOPS=0, BW=2079KiB/s (2129kB/s)(4096KiB/1970msec) clat (nsec): min=775686k, max=775686k, avg=775685592.00, stdev= 0.00 lat (nsec): min=775688k, max=775688k, avg=775687626.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 776], 80.00th=[ 776], 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= 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=1, BW=4158KiB/s (4258kB/s)(8192KiB/1970msec); 0 zone resets clat (msec): min=430, max=587, avg=508.85, stdev=110.56 lat (msec): min=431, max=587, avg=509.50, stdev=110.84 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 8126, max= 8126, per=61.33%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=12.80%, ctx=134, 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=181596: Fri Sep 11 10:46:27 2026 write: IOPS=1, BW=4969KiB/s (5088kB/s)(12.0MiB/2473msec); 0 zone resets clat (msec): min=621, max=916, avg=788.58, stdev=151.38 lat (msec): min=621, max=916, avg=789.04, stdev=151.37 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 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= 8143, max= 8192, per=61.64%, avg=8167.50, stdev=34.65, 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=13.63%, ctx=98, 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=181597: Fri Sep 11 10:46:27 2026 write: IOPS=1, BW=6200KiB/s (6349kB/s)(12.0MiB/1982msec); 0 zone resets clat (msec): min=241, max=1372, avg=621.94, stdev=650.18 lat (msec): min=242, max=1372, avg=622.39, stdev=650.05 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 251], 50.00th=[ 251], 60.00th=[ 251], | 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= 7025, max= 8143, per=57.24%, avg=7584.00, stdev=790.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=8.88%, ctx=69, 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=7387KiB/s (7564kB/s), 2079KiB/s-5540KiB/s (2129kB/s-5673kB/s), io=16.0MiB (16.8MB), run=1970-2218msec WRITE: bw=12.9MiB/s (13.6MB/s), 4158KiB/s-6200KiB/s (4258kB/s-6349kB/s), io=32.0MiB (33.6MB), run=1970-2473msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181598: Fri Sep 11 10:46:27 2026 read: IOPS=1, BW=4642KiB/s (4754kB/s)(12.0MiB/2647msec) clat (msec): min=267, max=1319, avg=843.15, stdev=532.55 lat (msec): min=267, max=1319, avg=843.15, stdev=532.55 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 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=100.00%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.84%, ctx=61, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181599: Fri Sep 11 10:46:27 2026 read: IOPS=0, BW=1589KiB/s (1628kB/s)(4096KiB/2577msec) clat (nsec): min=1439.2M, max=1439.2M, avg=1439250600.00, stdev= 0.00 lat (nsec): min=1439.3M, max=1439.3M, avg=1439252794.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1435], 5.00th=[ 1435], 10.00th=[ 1435], 20.00th=[ 1435], | 30.00th=[ 1435], 40.00th=[ 1435], 50.00th=[ 1435], 60.00th=[ 1435], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7816, max= 7816, per=100.00%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3179KiB/s (3255kB/s)(8192KiB/2577msec); 0 zone resets clat (msec): min=293, max=625, avg=459.57, stdev=235.18 lat (msec): min=293, max=627, avg=460.30, stdev=235.75 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 625], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.51%, ctx=64, 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=181600: Fri Sep 11 10:46:27 2026 write: IOPS=1, BW=4794KiB/s (4909kB/s)(12.0MiB/2563msec); 0 zone resets clat (msec): min=316, max=1263, avg=836.95, stdev=480.61 lat (msec): min=320, max=1264, avg=838.89, stdev=478.37 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8175, max= 8175, per=64.29%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.39%, ctx=46, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181601: Fri Sep 11 10:46:27 2026 write: IOPS=1, BW=5948KiB/s (6090kB/s)(12.0MiB/2066msec); 0 zone resets clat (msec): min=219, max=1449, avg=646.21, stdev=695.96 lat (msec): min=219, max=1449, avg=646.56, stdev=696.04 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 220], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 271], | 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= 7772, max= 8192, per=62.78%, avg=7982.00, stdev=296.98, 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=8.23%, ctx=77, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6190KiB/s (6338kB/s), 1589KiB/s-4642KiB/s (1628kB/s-4754kB/s), io=16.0MiB (16.8MB), run=2577-2647msec WRITE: bw=12.4MiB/s (13.0MB/s), 3179KiB/s-5948KiB/s (3255kB/s-6090kB/s), io=32.0MiB (33.6MB), run=2066-2577msec