== sanity test 398b: DIO and buffer IO race ============== 20:33:06 (1789605186) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.58746 s, 7.6 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=145097: Wed Sep 16 20:35:26 2026 read: IOPS=12, BW=50.1KiB/s (51.3kB/s)(5992KiB/119696msec) clat (usec): min=34, max=920903, avg=38704.21, stdev=40473.21 lat (usec): min=35, max=920904, avg=38709.92, stdev=40469.91 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 15270], | 30.00th=[ 20841], 40.00th=[ 26346], 50.00th=[ 31851], 60.00th=[ 39060], | 70.00th=[ 47449], 80.00th=[ 58983], 90.00th=[ 76022], 95.00th=[ 91751], | 99.00th=[139461], 99.50th=[162530], 99.90th=[484443], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 7, max= 102, per=25.01%, avg=50.03, stdev=20.68, samples=234 iops : min= 1, max= 25, avg=11.88, stdev= 5.19, samples=234 write: IOPS=13, BW=52.6KiB/s (53.9kB/s)(6296KiB/119696msec); 0 zone resets clat (usec): min=705, max=526900, avg=38878.19, stdev=41175.60 lat (usec): min=705, max=526902, avg=38880.08, stdev=41175.78 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1156], 10.00th=[ 1319], 20.00th=[ 3458], | 30.00th=[ 7373], 40.00th=[ 16581], 50.00th=[ 28705], 60.00th=[ 38536], | 70.00th=[ 51119], 80.00th=[ 69731], 90.00th=[ 93848], 95.00th=[111674], | 99.00th=[170918], 99.50th=[193987], 99.90th=[263193], 99.95th=[526386], | 99.99th=[526386] bw ( KiB/s): min= 5, max= 126, per=25.15%, avg=52.56, stdev=22.79, samples=234 iops : min= 1, max= 31, avg=12.51, stdev= 5.74, samples=234 lat (usec) : 50=0.85%, 100=5.34%, 250=0.46%, 750=0.03%, 1000=0.26% lat (msec) : 2=7.78%, 4=3.29%, 10=6.87%, 20=10.87%, 50=34.90% lat (msec) : 100=23.34%, 250=5.83%, 500=0.13%, 750=0.03%, 1000=0.03% cpu : usr=0.09%, sys=5.37%, ctx=6429, 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=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=145098: Wed Sep 16 20:35:26 2026 read: IOPS=12, BW=50.3KiB/s (51.5kB/s)(5940KiB/118195msec) clat (usec): min=31, max=611196, avg=36709.68, stdev=35555.10 lat (usec): min=31, max=611197, avg=36713.84, stdev=35554.94 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 14746], | 30.00th=[ 21365], 40.00th=[ 26084], 50.00th=[ 31327], 60.00th=[ 37487], | 70.00th=[ 45351], 80.00th=[ 55313], 90.00th=[ 70779], 95.00th=[ 89654], | 99.00th=[124257], 99.50th=[143655], 99.90th=[526386], 99.95th=[608175], | 99.99th=[608175] bw ( KiB/s): min= 7, max= 118, per=25.23%, avg=50.47, stdev=20.61, samples=230 iops : min= 1, max= 29, avg=11.99, stdev= 5.19, samples=230 write: IOPS=13, BW=53.7KiB/s (54.0kB/s)(6348KiB/118195msec); 0 zone resets clat (usec): min=842, max=1098.0k, avg=39817.40, stdev=47681.92 lat (usec): min=844, max=1098.0k, avg=39823.44, stdev=47678.54 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1188], 10.00th=[ 1467], | 20.00th=[ 3589], 30.00th=[ 7898], 40.00th=[ 17171], | 50.00th=[ 28967], 60.00th=[ 38536], 70.00th=[ 52691], | 80.00th=[ 70779], 90.00th=[ 95945], 95.00th=[ 115868], | 99.00th=[ 168821], 99.50th=[ 187696], 99.90th=[ 308282], | 99.95th=[1098908], 99.99th=[1098908] bw ( KiB/s): min= 7, max= 111, per=25.71%, avg=53.73, stdev=20.19, samples=231 iops : min= 1, max= 27, avg=12.81, stdev= 5.09, samples=231 lat (usec) : 50=0.91%, 100=5.60%, 250=0.10%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.33% lat (msec) : 2=6.32%, 4=4.49%, 10=6.74%, 20=10.71%, 50=36.17% lat (msec) : 100=22.43%, 250=5.79%, 500=0.10%, 750=0.07%, 2000=0.03% cpu : usr=0.08%, sys=5.34%, ctx=6194, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145099: Wed Sep 16 20:35:26 2026 read: IOPS=12, BW=50.6KiB/s (51.8kB/s)(6028KiB/119159msec) clat (usec): min=21, max=1128.7k, avg=38612.57, stdev=43324.57 lat (usec): min=21, max=1128.7k, avg=38614.82, stdev=43324.68 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 57], 10.00th=[ 71], | 20.00th=[ 16581], 30.00th=[ 21890], 40.00th=[ 26346], | 50.00th=[ 31851], 60.00th=[ 38011], 70.00th=[ 46924], | 80.00th=[ 57410], 90.00th=[ 73925], 95.00th=[ 88605], | 99.00th=[ 143655], 99.50th=[ 164627], 99.90th=[ 608175], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 119, per=25.25%, avg=50.51, stdev=21.25, samples=233 iops : min= 1, max= 29, avg=12.01, stdev= 5.34, samples=233 write: IOPS=13, BW=52.5KiB/s (53.8kB/s)(6260KiB/119159msec); 0 zone resets clat (usec): min=824, max=289414, avg=38654.46, stdev=39979.43 lat (usec): min=826, max=289415, avg=38657.18, stdev=39979.40 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1172], 10.00th=[ 1369], 20.00th=[ 3621], | 30.00th=[ 7046], 40.00th=[ 16450], 50.00th=[ 28181], 60.00th=[ 39584], | 70.00th=[ 51643], 80.00th=[ 67634], 90.00th=[ 93848], 95.00th=[116917], | 99.00th=[179307], 99.50th=[198181], 99.90th=[217056], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 7, max= 151, per=25.13%, avg=52.52, stdev=22.20, samples=233 iops : min= 1, max= 37, avg=12.51, stdev= 5.60, samples=233 lat (usec) : 50=0.98%, 100=4.62%, 250=0.33%, 500=0.16%, 750=0.10% lat (usec) : 1000=0.29% lat (msec) : 2=6.90%, 4=3.78%, 10=7.36%, 20=10.16%, 50=36.59% lat (msec) : 100=22.88%, 250=5.73%, 500=0.07%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=5.18%, ctx=6267, 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=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=145100: Wed Sep 16 20:35:26 2026 read: IOPS=12, BW=50.5KiB/s (51.7kB/s)(6052KiB/119914msec) clat (usec): min=19, max=234191, avg=36431.08, stdev=29040.78 lat (usec): min=19, max=234192, avg=36439.02, stdev=29042.13 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 13435], | 30.00th=[ 20579], 40.00th=[ 25297], 50.00th=[ 31065], 60.00th=[ 38011], | 70.00th=[ 47449], 80.00th=[ 56886], 90.00th=[ 73925], 95.00th=[ 86508], | 99.00th=[127402], 99.50th=[147850], 99.90th=[214959], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 7, max= 126, per=25.48%, avg=50.97, stdev=21.85, samples=231 iops : min= 1, max= 31, avg=12.11, stdev= 5.49, samples=231 write: IOPS=13, BW=52.0KiB/s (53.3kB/s)(6236KiB/119914msec); 0 zone resets clat (usec): min=853, max=1079.3k, avg=41235.92, stdev=53947.22 lat (usec): min=855, max=1079.3k, avg=41239.41, stdev=53946.74 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1500], | 20.00th=[ 3621], 30.00th=[ 7373], 40.00th=[ 17433], | 50.00th=[ 29230], 60.00th=[ 41157], 70.00th=[ 54264], | 80.00th=[ 69731], 90.00th=[ 94897], 95.00th=[ 117965], | 99.00th=[ 181404], 99.50th=[ 242222], 99.90th=[ 901776], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 103, per=24.66%, avg=51.54, stdev=20.55, samples=235 iops : min= 1, max= 25, avg=12.26, stdev= 5.19, samples=235 lat (usec) : 20=0.03%, 50=1.27%, 100=5.50%, 250=0.20%, 500=0.03% lat (usec) : 750=0.03%, 1000=0.29% lat (msec) : 2=6.90%, 4=3.91%, 10=7.10%, 20=10.25%, 50=34.31% lat (msec) : 100=24.41%, 250=5.53%, 500=0.16%, 1000=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.35%, ctx=6348, 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=200KiB/s (205kB/s), 50.1KiB/s-50.6KiB/s (51.3kB/s-51.8kB/s), io=23.4MiB (24.6MB), run=118195-119914msec WRITE: bw=210KiB/s (215kB/s), 52.0KiB/s-53.7KiB/s (53.3kB/s-54.0kB/s), io=24.6MiB (25.7MB), run=118195-119914msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145102: Wed Sep 16 20:37:42 2026 read: IOPS=5, BW=23.6KiB/s (24.1kB/s)(5992KiB/254141msec) clat (msec): min=4, max=982, avg=32.15, stdev=39.89 lat (msec): min=4, max=982, avg=32.15, stdev=39.89 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 42], 90.00th=[ 74], 95.00th=[ 103], | 99.00th=[ 157], 99.50th=[ 176], 99.90th=[ 284], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 111, per=27.32%, avg=25.69, stdev=17.93, samples=451 iops : min= 1, max= 27, avg= 5.82, stdev= 4.54, samples=451 write: IOPS=6, BW=24.8KiB/s (25.4kB/s)(6296KiB/254141msec); 0 zone resets clat (msec): min=35, max=1197, avg=130.78, stdev=67.75 lat (msec): min=35, max=1197, avg=130.79, stdev=67.75 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 57], 10.00th=[ 66], 20.00th=[ 79], | 30.00th=[ 91], 40.00th=[ 104], 50.00th=[ 116], 60.00th=[ 129], | 70.00th=[ 153], 80.00th=[ 178], 90.00th=[ 215], 95.00th=[ 253], | 99.00th=[ 317], 99.50th=[ 338], 99.90th=[ 684], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 63, per=25.13%, avg=24.62, stdev=11.25, samples=493 iops : min= 1, max= 15, avg= 5.56, stdev= 2.88, samples=493 lat (msec) : 10=5.21%, 20=18.95%, 50=17.48%, 100=24.22%, 250=31.35% lat (msec) : 500=2.70%, 750=0.03%, 1000=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.10%, ctx=5041, 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=145103: Wed Sep 16 20:37:42 2026 read: IOPS=5, BW=23.3KiB/s (23.8kB/s)(5940KiB/255289msec) clat (msec): min=4, max=1127, avg=32.03, stdev=48.35 lat (msec): min=4, max=1127, avg=32.03, stdev=48.35 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 42], 90.00th=[ 69], 95.00th=[ 92], | 99.00th=[ 165], 99.50th=[ 203], 99.90th=[ 852], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 95, per=27.64%, avg=25.98, stdev=17.64, samples=443 iops : min= 1, max= 23, avg= 5.90, stdev= 4.47, samples=443 write: IOPS=6, BW=24.9KiB/s (25.5kB/s)(6348KiB/255289msec); 0 zone resets clat (msec): min=24, max=558, avg=130.81, stdev=61.77 lat (msec): min=24, max=558, avg=130.82, stdev=61.77 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 57], 10.00th=[ 68], 20.00th=[ 80], | 30.00th=[ 92], 40.00th=[ 105], 50.00th=[ 115], 60.00th=[ 132], | 70.00th=[ 153], 80.00th=[ 178], 90.00th=[ 218], 95.00th=[ 249], | 99.00th=[ 326], 99.50th=[ 347], 99.90th=[ 456], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 7, max= 72, per=25.04%, avg=24.54, stdev=11.44, samples=500 iops : min= 1, max= 18, avg= 5.54, stdev= 2.93, samples=500 lat (msec) : 10=5.40%, 20=19.04%, 50=17.71%, 100=23.18%, 250=31.97% lat (msec) : 500=2.60%, 750=0.03%, 1000=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.11%, ctx=5154, 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=145104: Wed Sep 16 20:37:42 2026 read: IOPS=5, BW=23.7KiB/s (24.3kB/s)(6028KiB/254060msec) clat (msec): min=5, max=361, avg=31.84, stdev=31.59 lat (msec): min=5, max=361, avg=31.84, stdev=31.59 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 44], 90.00th=[ 74], 95.00th=[ 96], | 99.00th=[ 157], 99.50th=[ 180], 99.90th=[ 236], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 112, per=27.29%, avg=25.65, stdev=17.96, samples=454 iops : min= 1, max= 28, avg= 5.82, stdev= 4.53, samples=454 write: IOPS=6, BW=24.6KiB/s (25.2kB/s)(6260KiB/254060msec); 0 zone resets clat (msec): min=28, max=1348, avg=131.59, stdev=72.67 lat (msec): min=28, max=1348, avg=131.59, stdev=72.67 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 80], | 30.00th=[ 92], 40.00th=[ 104], 50.00th=[ 116], 60.00th=[ 132], | 70.00th=[ 153], 80.00th=[ 176], 90.00th=[ 215], 95.00th=[ 249], | 99.00th=[ 326], 99.50th=[ 342], 99.90th=[ 1200], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7, max= 63, per=24.77%, avg=24.28, stdev=11.21, samples=497 iops : min= 1, max= 15, avg= 5.47, stdev= 2.86, samples=497 lat (msec) : 10=5.60%, 20=18.23%, 50=18.03%, 100=24.35%, 250=31.22% lat (msec) : 500=2.51%, 2000=0.07% cpu : usr=0.04%, sys=1.12%, ctx=5036, 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=145105: Wed Sep 16 20:37:42 2026 read: IOPS=5, BW=23.9KiB/s (24.5kB/s)(6052KiB/252916msec) clat (msec): min=5, max=856, avg=30.72, stdev=37.10 lat (msec): min=5, max=856, avg=30.73, stdev=37.11 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 40], 90.00th=[ 66], 95.00th=[ 91], | 99.00th=[ 148], 99.50th=[ 182], 99.90th=[ 418], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7, max= 104, per=28.23%, avg=26.54, stdev=17.62, samples=442 iops : min= 1, max= 26, avg= 6.03, stdev= 4.46, samples=442 write: IOPS=6, BW=24.7KiB/s (25.2kB/s)(6236KiB/252916msec); 0 zone resets clat (msec): min=37, max=1343, avg=132.34, stdev=70.72 lat (msec): min=37, max=1343, avg=132.34, stdev=70.72 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 61], 10.00th=[ 68], 20.00th=[ 81], | 30.00th=[ 91], 40.00th=[ 104], 50.00th=[ 116], 60.00th=[ 132], | 70.00th=[ 153], 80.00th=[ 176], 90.00th=[ 222], 95.00th=[ 249], | 99.00th=[ 326], 99.50th=[ 401], 99.90th=[ 684], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7, max= 56, per=25.00%, avg=24.50, stdev=11.00, samples=492 iops : min= 1, max= 14, avg= 5.53, stdev= 2.82, samples=492 lat (msec) : 10=5.24%, 20=19.37%, 50=18.23%, 100=23.73%, 250=30.92% lat (msec) : 500=2.38%, 750=0.07%, 1000=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.11%, ctx=5174, 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=94.1KiB/s (96.3kB/s), 23.3KiB/s-23.9KiB/s (23.8kB/s-24.5kB/s), io=23.4MiB (24.6MB), run=252916-255289msec WRITE: bw=98.5KiB/s (101kB/s), 24.6KiB/s-24.9KiB/s (25.2kB/s-25.5kB/s), io=24.6MiB (25.7MB), run=252916-255289msec 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=145159: Wed Sep 16 20:38:18 2026 read: IOPS=15, BW=247KiB/s (253kB/s)(5920KiB/23994msec) clat (usec): min=31, max=169473, avg=32888.02, stdev=27481.16 lat (usec): min=31, max=169475, avg=32889.10, stdev=27481.19 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 49], 10.00th=[ 59], 20.00th=[ 74], | 30.00th=[ 16909], 40.00th=[ 27132], 50.00th=[ 32375], 60.00th=[ 36963], | 70.00th=[ 43779], 80.00th=[ 55837], 90.00th=[ 67634], 95.00th=[ 80217], | 99.00th=[105382], 99.50th=[141558], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 121, max= 445, per=26.59%, avg=247.02, stdev=82.50, samples=47 iops : min= 7, max= 27, avg=14.70, stdev= 5.16, samples=47 write: IOPS=16, BW=265KiB/s (272kB/s)(6368KiB/23994msec); 0 zone resets clat (usec): min=1020, max=276777, avg=29592.52, stdev=31579.87 lat (usec): min=1021, max=276779, avg=29594.64, stdev=31579.84 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1729], 10.00th=[ 2507], 20.00th=[ 4555], | 30.00th=[ 8291], 40.00th=[ 13435], 50.00th=[ 18482], 60.00th=[ 26608], | 70.00th=[ 35914], 80.00th=[ 52167], 90.00th=[ 71828], 95.00th=[ 88605], | 99.00th=[122160], 99.50th=[177210], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 63, max= 532, per=27.16%, avg=265.32, stdev=106.30, samples=47 iops : min= 3, max= 33, avg=15.89, stdev= 6.67, samples=47 lat (usec) : 50=2.60%, 100=9.64%, 250=0.26%, 500=0.39%, 750=0.13% lat (msec) : 2=4.56%, 4=4.95%, 10=8.72%, 20=11.46%, 50=33.33% lat (msec) : 100=21.35%, 250=2.47%, 500=0.13% cpu : usr=0.09%, sys=6.19%, ctx=1383, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145160: Wed Sep 16 20:38:18 2026 read: IOPS=13, BW=223KiB/s (228kB/s)(5744KiB/25782msec) clat (usec): min=36, max=240246, avg=36545.49, stdev=30159.26 lat (usec): min=37, max=240247, avg=36546.66, stdev=30159.27 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 54], 10.00th=[ 62], 20.00th=[ 84], | 30.00th=[ 21627], 40.00th=[ 29754], 50.00th=[ 34341], 60.00th=[ 41681], | 70.00th=[ 48497], 80.00th=[ 57934], 90.00th=[ 71828], 95.00th=[ 83362], | 99.00th=[116917], 99.50th=[189793], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 57, max= 479, per=24.40%, avg=226.71, stdev=98.69, samples=49 iops : min= 3, max= 29, avg=13.45, stdev= 6.24, samples=49 write: IOPS=15, BW=254KiB/s (260kB/s)(6544KiB/25782msec); 0 zone resets clat (usec): min=1015, max=272170, avg=30779.28, stdev=33886.80 lat (usec): min=1017, max=272173, avg=30785.09, stdev=33886.76 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1680], 10.00th=[ 1958], 20.00th=[ 4228], | 30.00th=[ 7570], 40.00th=[ 11338], 50.00th=[ 20841], 60.00th=[ 29754], | 70.00th=[ 39584], 80.00th=[ 52691], 90.00th=[ 70779], 95.00th=[ 91751], | 99.00th=[135267], 99.50th=[193987], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 63, max= 445, per=25.89%, avg=252.92, stdev=112.75, samples=50 iops : min= 3, max= 27, avg=15.08, stdev= 7.08, samples=50 lat (usec) : 50=1.56%, 100=8.20%, 500=0.26%, 750=0.13% lat (msec) : 2=5.60%, 4=4.82%, 10=10.16%, 20=8.85%, 50=36.07% lat (msec) : 100=20.96%, 250=3.26%, 500=0.13% cpu : usr=0.09%, sys=6.51%, ctx=1376, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145161: Wed Sep 16 20:38:18 2026 read: IOPS=15, BW=249KiB/s (255kB/s)(6256KiB/25098msec) clat (usec): min=35, max=168242, avg=33103.92, stdev=26877.43 lat (usec): min=36, max=168242, avg=33106.84, stdev=26880.14 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 91], | 30.00th=[ 17957], 40.00th=[ 26084], 50.00th=[ 30802], 60.00th=[ 36963], | 70.00th=[ 43254], 80.00th=[ 54264], 90.00th=[ 66847], 95.00th=[ 79168], | 99.00th=[114820], 99.50th=[135267], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 92, max= 455, per=27.04%, avg=251.24, stdev=90.47, samples=49 iops : min= 5, max= 28, avg=14.98, stdev= 5.75, samples=49 write: IOPS=15, BW=240KiB/s (246kB/s)(6032KiB/25098msec); 0 zone resets clat (usec): min=1462, max=222573, avg=32084.52, stdev=35192.47 lat (usec): min=1463, max=222575, avg=32086.80, stdev=35192.35 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1778], 10.00th=[ 2376], 20.00th=[ 3818], | 30.00th=[ 7046], 40.00th=[ 10683], 50.00th=[ 18482], 60.00th=[ 29230], | 70.00th=[ 39060], 80.00th=[ 57410], 90.00th=[ 82314], 95.00th=[ 98042], | 99.00th=[152044], 99.50th=[173016], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 94, max= 480, per=24.40%, avg=238.35, stdev=99.43, samples=49 iops : min= 5, max= 30, avg=14.18, stdev= 6.31, samples=49 lat (usec) : 50=1.69%, 100=8.59%, 250=0.78%, 500=0.39%, 1000=0.13% lat (msec) : 2=4.04%, 4=6.38%, 10=9.11%, 20=9.90%, 50=34.77% lat (msec) : 100=20.83%, 250=3.39% cpu : usr=0.09%, sys=6.20%, ctx=1405, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145162: Wed Sep 16 20:38:18 2026 read: IOPS=14, BW=236KiB/s (242kB/s)(6032KiB/25537msec) clat (usec): min=35, max=201942, avg=34777.94, stdev=30015.65 lat (usec): min=35, max=201943, avg=34779.13, stdev=30015.66 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 75], | 30.00th=[ 17433], 40.00th=[ 25822], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 46924], 80.00th=[ 57934], 90.00th=[ 71828], 95.00th=[ 81265], | 99.00th=[127402], 99.50th=[168821], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 31, max= 474, per=25.22%, avg=234.30, stdev=102.29, samples=50 iops : min= 1, max= 29, avg=13.92, stdev= 6.49, samples=50 write: IOPS=15, BW=245KiB/s (251kB/s)(6256KiB/25537msec); 0 zone resets clat (usec): min=1297, max=311828, avg=31681.74, stdev=38601.24 lat (usec): min=1299, max=311831, avg=31683.86, stdev=38601.28 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1795], 10.00th=[ 2638], 20.00th=[ 4490], | 30.00th=[ 6783], 40.00th=[ 10814], 50.00th=[ 16450], 60.00th=[ 26084], | 70.00th=[ 40109], 80.00th=[ 55313], 90.00th=[ 76022], 95.00th=[105382], | 99.00th=[202376], 99.50th=[238027], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 63, max= 516, per=25.06%, avg=244.86, stdev=106.20, samples=50 iops : min= 3, max= 32, avg=14.58, stdev= 6.75, samples=50 lat (usec) : 50=2.21%, 100=8.98%, 250=0.65%, 500=0.26%, 750=0.26% lat (msec) : 2=4.43%, 4=5.21%, 10=10.81%, 20=10.42%, 50=32.03% lat (msec) : 100=20.57%, 250=4.04%, 500=0.13% cpu : usr=0.09%, sys=6.24%, ctx=1356, 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=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=929KiB/s (951kB/s), 223KiB/s-249KiB/s (228kB/s-255kB/s), io=23.4MiB (24.5MB), run=23994-25782msec WRITE: bw=977KiB/s (1001kB/s), 240KiB/s-265KiB/s (246kB/s-272kB/s), io=24.6MiB (25.8MB), run=23994-25782msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145154: Wed Sep 16 20:38:57 2026 read: IOPS=5, BW=91.5KiB/s (93.7kB/s)(5920KiB/64675msec) clat (msec): min=7, max=416, avg=36.38, stdev=33.32 lat (msec): min=7, max=416, avg=36.38, stdev=33.32 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 68], 95.00th=[ 90], | 99.00th=[ 148], 99.50th=[ 199], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 31, max= 349, per=27.08%, avg=99.13, stdev=63.37, samples=118 iops : min= 1, max= 21, avg= 5.48, stdev= 4.05, samples=118 write: IOPS=6, BW=98.5KiB/s (101kB/s)(6368KiB/64675msec); 0 zone resets clat (msec): min=42, max=351, avg=128.28, stdev=58.77 lat (msec): min=42, max=351, avg=128.29, stdev=58.77 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 60], 10.00th=[ 65], 20.00th=[ 78], | 30.00th=[ 91], 40.00th=[ 102], 50.00th=[ 113], 60.00th=[ 136], | 70.00th=[ 150], 80.00th=[ 167], 90.00th=[ 209], 95.00th=[ 251], | 99.00th=[ 342], 99.50th=[ 347], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 191, per=25.46%, avg=98.01, stdev=41.31, samples=128 iops : min= 1, max= 11, avg= 5.41, stdev= 2.71, samples=128 lat (msec) : 10=1.56%, 20=14.45%, 50=23.70%, 100=26.17%, 250=31.51% lat (msec) : 500=2.60% cpu : usr=0.05%, sys=1.31%, ctx=1330, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145155: Wed Sep 16 20:38:57 2026 read: IOPS=5, BW=87.8KiB/s (89.9kB/s)(5744KiB/65412msec) clat (msec): min=6, max=168, avg=35.96, stdev=27.56 lat (msec): min=6, max=168, avg=35.97, stdev=27.56 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 51], 90.00th=[ 69], 95.00th=[ 93], | 99.00th=[ 157], 99.50th=[ 165], 99.90th=[ 169], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 29, max= 416, per=27.12%, avg=99.27, stdev=63.57, samples=113 iops : min= 1, max= 26, avg= 5.51, stdev= 4.04, samples=113 write: IOPS=6, BW=100KiB/s (102kB/s)(6544KiB/65412msec); 0 zone resets clat (msec): min=35, max=459, avg=127.98, stdev=61.59 lat (msec): min=35, max=459, avg=127.99, stdev=61.59 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 78], | 30.00th=[ 87], 40.00th=[ 99], 50.00th=[ 112], 60.00th=[ 130], | 70.00th=[ 146], 80.00th=[ 174], 90.00th=[ 215], 95.00th=[ 251], | 99.00th=[ 317], 99.50th=[ 338], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 30, max= 192, per=25.86%, avg=99.54, stdev=44.18, samples=129 iops : min= 1, max= 12, avg= 5.50, stdev= 2.85, samples=129 lat (msec) : 10=1.17%, 20=13.67%, 50=23.18%, 100=28.39%, 250=30.86% lat (msec) : 500=2.73% cpu : usr=0.03%, sys=1.33%, ctx=1303, 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=145156: Wed Sep 16 20:38:57 2026 read: IOPS=6, BW=101KiB/s (103kB/s)(6256KiB/62071msec) clat (msec): min=6, max=343, avg=34.29, stdev=30.94 lat (msec): min=6, max=343, avg=34.29, stdev=30.94 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 45], 90.00th=[ 63], 95.00th=[ 102], | 99.00th=[ 142], 99.50th=[ 159], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 30, max= 343, per=29.31%, avg=107.29, stdev=72.49, samples=115 iops : min= 1, max= 21, avg= 6.00, stdev= 4.62, samples=115 write: IOPS=6, BW=97.2KiB/s (99.5kB/s)(6032KiB/62071msec); 0 zone resets clat (msec): min=30, max=546, avg=128.67, stdev=63.42 lat (msec): min=30, max=546, avg=128.67, stdev=63.42 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 66], 20.00th=[ 79], | 30.00th=[ 91], 40.00th=[ 102], 50.00th=[ 113], 60.00th=[ 127], | 70.00th=[ 148], 80.00th=[ 169], 90.00th=[ 203], 95.00th=[ 249], | 99.00th=[ 355], 99.50th=[ 384], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 30, max= 223, per=25.03%, avg=96.36, stdev=41.97, samples=122 iops : min= 1, max= 13, avg= 5.31, stdev= 2.73, samples=122 lat (msec) : 10=2.08%, 20=16.67%, 50=25.65%, 100=23.18%, 250=29.95% lat (msec) : 500=2.34%, 750=0.13% cpu : usr=0.05%, sys=1.39%, ctx=1359, 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=145157: Wed Sep 16 20:38:57 2026 read: IOPS=5, BW=94.6KiB/s (96.9kB/s)(6032KiB/63761msec) clat (msec): min=6, max=416, avg=37.67, stdev=38.90 lat (msec): min=6, max=416, avg=37.67, stdev=38.90 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 33], | 70.00th=[ 38], 80.00th=[ 48], 90.00th=[ 74], 95.00th=[ 102], | 99.00th=[ 197], 99.50th=[ 347], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 28, max= 286, per=27.91%, avg=102.16, stdev=64.73, samples=115 iops : min= 1, max= 17, avg= 5.62, stdev= 4.14, samples=115 write: IOPS=6, BW=98.1KiB/s (100kB/s)(6256KiB/63761msec); 0 zone resets clat (msec): min=41, max=434, avg=126.61, stdev=61.86 lat (msec): min=41, max=434, avg=126.61, stdev=61.86 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 61], 10.00th=[ 69], 20.00th=[ 80], | 30.00th=[ 89], 40.00th=[ 99], 50.00th=[ 109], 60.00th=[ 121], | 70.00th=[ 144], 80.00th=[ 165], 90.00th=[ 213], 95.00th=[ 251], | 99.00th=[ 334], 99.50th=[ 414], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 30, max= 192, per=25.46%, avg=98.04, stdev=43.23, samples=125 iops : min= 1, max= 12, avg= 5.35, stdev= 2.81, samples=125 lat (msec) : 10=2.60%, 20=13.28%, 50=24.61%, 100=26.95%, 250=29.69% lat (msec) : 500=2.86% cpu : usr=0.03%, sys=1.22%, ctx=1403, 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=366KiB/s (375kB/s), 87.8KiB/s-101KiB/s (89.9kB/s-103kB/s), io=23.4MiB (24.5MB), run=62071-65412msec WRITE: bw=385KiB/s (394kB/s), 97.2KiB/s-100KiB/s (99.5kB/s-102kB/s), io=24.6MiB (25.8MB), run=62071-65412msec 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=145180: Wed Sep 16 20:39:12 2026 read: IOPS=1, BW=1804KiB/s (1847kB/s)(7168KiB/3973msec) clat (msec): min=71, max=514, avg=249.86, stdev=166.30 lat (msec): min=71, max=514, avg=249.87, stdev=166.30 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 131], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 224], 60.00th=[ 245], | 70.00th=[ 245], 80.00th=[ 435], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 2043, max= 3976, per=58.32%, avg=2748.00, stdev=917.67, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1289KiB/s (1320kB/s)(5120KiB/3973msec); 0 zone resets clat (msec): min=220, max=787, avg=394.70, stdev=225.03 lat (msec): min=220, max=787, avg=394.81, stdev=225.00 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 222], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 326], 60.00th=[ 326], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 2011, max= 4096, per=38.49%, avg=2539.25, stdev=1037.87, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=4.73%, ctx=79, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145181: Wed Sep 16 20:39:12 2026 read: IOPS=0, BW=477KiB/s (488kB/s)(2048KiB/4296msec) clat (msec): min=134, max=140, avg=137.65, stdev= 4.70 lat (msec): min=134, max=140, avg=137.65, stdev= 4.70 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 136], 60.00th=[ 142], | 70.00th=[ 142], 80.00th=[ 142], 90.00th=[ 142], 95.00th=[ 142], | 99.00th=[ 142], 99.50th=[ 142], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 1488, max= 2019, per=37.21%, avg=1753.50, stdev=375.47, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2384KiB/s (2441kB/s)(10.0MiB/4296msec); 0 zone resets clat (msec): min=205, max=668, avg=391.60, stdev=127.30 lat (msec): min=205, max=669, avg=391.72, stdev=127.32 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 288], | 30.00th=[ 313], 40.00th=[ 347], 50.00th=[ 359], 60.00th=[ 388], | 70.00th=[ 409], 80.00th=[ 435], 90.00th=[ 502], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1488, max= 4096, per=38.29%, avg=2526.29, stdev=1050.84, samples=7 iops : min= 1, max= 4, avg= 1.71, stdev= 1.25, samples=7 lat (msec) : 250=25.00%, 500=58.33%, 750=16.67% cpu : usr=0.00%, sys=4.35%, ctx=87, 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=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=145183: Wed Sep 16 20:39:12 2026 read: IOPS=1, BW=1425KiB/s (1459kB/s)(6144KiB/4313msec) clat (msec): min=122, max=502, avg=289.81, stdev=156.73 lat (msec): min=122, max=502, avg=289.81, stdev=156.73 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 300], | 70.00th=[ 447], 80.00th=[ 447], 90.00th=[ 502], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 1988, max= 2048, per=42.86%, avg=2019.40, stdev=22.41, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=1, BW=1425KiB/s (1459kB/s)(6144KiB/4313msec); 0 zone resets clat (msec): min=272, max=587, avg=422.65, stdev=113.04 lat (msec): min=272, max=589, avg=423.15, stdev=113.71 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 456], | 70.00th=[ 502], 80.00th=[ 502], 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= 1512, max= 2048, per=29.54%, avg=1948.67, stdev=214.16, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 250=25.00%, 500=58.33%, 750=16.67% cpu : usr=0.00%, sys=3.15%, ctx=103, 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=145185: Wed Sep 16 20:39:12 2026 read: IOPS=1, BW=1178KiB/s (1206kB/s)(5120KiB/4346msec) clat (msec): min=75, max=303, avg=158.35, stdev=89.73 lat (msec): min=75, max=303, avg=158.35, stdev=89.73 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 75], | 30.00th=[ 103], 40.00th=[ 103], 50.00th=[ 133], 60.00th=[ 133], | 70.00th=[ 180], 80.00th=[ 180], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 2011, max= 6144, per=86.53%, avg=4077.50, stdev=2922.47, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1649KiB/s (1689kB/s)(7168KiB/4346msec); 0 zone resets clat (msec): min=201, max=840, avg=460.57, stdev=236.01 lat (msec): min=202, max=851, avg=462.34, stdev=238.62 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 245], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 506], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 592], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1988, max= 4079, per=35.87%, avg=2366.67, stdev=839.16, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=2.65%, 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=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=4712KiB/s (4825kB/s), 477KiB/s-1804KiB/s (488kB/s-1847kB/s), io=20.0MiB (20.0MB), run=3973-4346msec WRITE: bw=6597KiB/s (6756kB/s), 1289KiB/s-2384KiB/s (1320kB/s-2441kB/s), io=28.0MiB (29.4MB), run=3973-4346msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145182: Wed Sep 16 20:39:12 2026 read: IOPS=2, BW=2567KiB/s (2629kB/s)(7168KiB/2792msec) clat (usec): min=471, max=503438, avg=142774.85, stdev=190424.65 lat (usec): min=473, max=503440, avg=142776.39, stdev=190424.86 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], 20.00th=[ 619], | 30.00th=[ 1778], 40.00th=[ 1778], 50.00th=[ 36439], 60.00th=[204473], | 70.00th=[204473], 80.00th=[252707], 90.00th=[505414], 95.00th=[505414], | 99.00th=[505414], 99.50th=[505414], 99.90th=[505414], 99.95th=[505414], | 99.99th=[505414] bw ( KiB/s): min= 1969, max= 4079, per=60.06%, avg=2849.75, stdev=1024.31, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1834KiB/s (1878kB/s)(5120KiB/2792msec); 0 zone resets clat (msec): min=148, max=464, avg=299.15, stdev=123.89 lat (msec): min=148, max=464, avg=299.25, stdev=123.89 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 2039, max= 3938, per=40.27%, avg=2675.00, stdev=1093.80, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 50=8.33%, 250=25.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=11.04%, ctx=129, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145184: Wed Sep 16 20:39:12 2026 read: IOPS=0, BW=475KiB/s (486kB/s)(2048KiB/4316msec) clat (msec): min=241, max=269, avg=255.28, stdev=19.90 lat (msec): min=241, max=269, avg=255.28, stdev=19.90 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 271], 95.00th=[ 271], | 99.00th=[ 271], 99.50th=[ 271], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 1673, max= 1969, per=38.38%, avg=1821.00, stdev=209.30, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2373KiB/s (2430kB/s)(10.0MiB/4316msec); 0 zone resets clat (msec): min=128, max=666, avg=359.67, stdev=201.70 lat (msec): min=128, max=667, avg=359.78, stdev=201.75 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 138], | 30.00th=[ 142], 40.00th=[ 253], 50.00th=[ 326], 60.00th=[ 363], | 70.00th=[ 460], 80.00th=[ 472], 90.00th=[ 651], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1673, max= 3938, per=33.87%, avg=2249.86, stdev=756.52, samples=7 iops : min= 1, max= 3, avg= 1.43, stdev= 0.79, samples=7 lat (msec) : 250=33.33%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=13.34%, ctx=128, 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=145186: Wed Sep 16 20:39:12 2026 read: IOPS=1, BW=1651KiB/s (1690kB/s)(6144KiB/3722msec) clat (msec): min=2, max=234, avg=153.73, stdev=107.43 lat (msec): min=2, max=234, avg=153.74, stdev=107.43 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 31], | 30.00th=[ 31], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 222], | 70.00th=[ 234], 80.00th=[ 234], 90.00th=[ 234], 95.00th=[ 234], | 99.00th=[ 234], 99.50th=[ 234], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 2039, max= 6119, per=71.70%, avg=3402.00, stdev=2353.00, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=1, BW=1651KiB/s (1690kB/s)(6144KiB/3722msec); 0 zone resets clat (msec): min=112, max=715, avg=435.71, stdev=209.11 lat (msec): min=112, max=715, avg=435.80, stdev=209.12 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 477], | 70.00th=[ 584], 80.00th=[ 584], 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= 1641, max= 2048, per=29.55%, avg=1963.17, stdev=160.56, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 4=8.33%, 50=8.33%, 250=41.67%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=12.15%, ctx=226, 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=145187: Wed Sep 16 20:39:12 2026 read: IOPS=2, BW=2202KiB/s (2255kB/s)(5120KiB/2325msec) clat (usec): min=553, max=297417, avg=181391.84, stdev=109422.12 lat (usec): min=555, max=297419, avg=181393.14, stdev=109422.12 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 553], | 30.00th=[193987], 40.00th=[193987], 50.00th=[196084], 60.00th=[196084], | 70.00th=[217056], 80.00th=[217056], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 4079, max= 4087, per=86.05%, avg=4083.00, stdev= 5.66, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3083KiB/s (3157kB/s)(7168KiB/2325msec); 0 zone resets clat (msec): min=83, max=295, avg=188.17, stdev=67.86 lat (msec): min=83, max=295, avg=188.28, stdev=67.86 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 126], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 201], 60.00th=[ 205], | 70.00th=[ 205], 80.00th=[ 218], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 3235, max= 6144, per=67.57%, avg=4488.67, stdev=1495.52, samples=3 iops : min= 3, max= 6, avg= 4.00, stdev= 1.73, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=66.67%, 500=16.67% cpu : usr=0.00%, sys=21.17%, ctx=224, 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=4745KiB/s (4859kB/s), 475KiB/s-2567KiB/s (486kB/s-2629kB/s), io=20.0MiB (20.0MB), run=2325-4316msec WRITE: bw=6643KiB/s (6803kB/s), 1651KiB/s-3083KiB/s (1690kB/s-3157kB/s), io=28.0MiB (29.4MB), run=2325-4316msec 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=145196: Wed Sep 16 20:39:27 2026 read: IOPS=0, BW=3839KiB/s (3931kB/s)(12.0MiB/3201msec) clat (msec): min=231, max=1911, avg=1013.88, stdev=846.12 lat (msec): min=231, max=1911, avg=1013.89, stdev=846.12 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 232], | 30.00th=[ 232], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, 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%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=2.69%, ctx=55, 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=145198: Wed Sep 16 20:39:27 2026 read: IOPS=0, BW=1082KiB/s (1108kB/s)(4096KiB/3785msec) clat (nsec): min=1461.8M, max=1461.8M, avg=1461816885.00, stdev= 0.00 lat (nsec): min=1461.8M, max=1461.8M, avg=1461819909.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1469], 5.00th=[ 1469], 10.00th=[ 1469], 20.00th=[ 1469], | 30.00th=[ 1469], 40.00th=[ 1469], 50.00th=[ 1469], 60.00th=[ 1469], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2164KiB/s (2216kB/s)(8192KiB/3785msec); 0 zone resets clat (msec): min=367, max=1659, avg=1013.89, stdev=913.47 lat (msec): min=368, max=1661, avg=1015.13, stdev=914.15 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 1653], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 8192, max= 8192, per=94.63%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.40%, ctx=46, 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=145199: Wed Sep 16 20:39:27 2026 write: IOPS=0, BW=3840KiB/s (3932kB/s)(12.0MiB/3200msec); 0 zone resets clat (msec): min=603, max=1695, avg=1017.95, stdev=591.73 lat (msec): min=604, max=1695, avg=1018.89, stdev=591.25 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8143, max= 8192, per=94.35%, 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=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.35%, ctx=74, 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=145202: Wed Sep 16 20:39:27 2026 write: IOPS=1, BW=5024KiB/s (5144kB/s)(12.0MiB/2446msec); 0 zone resets clat (msec): min=511, max=1103, avg=740.40, stdev=317.68 lat (msec): min=513, max=1103, avg=742.44, stdev=316.42 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8094, max= 8143, per=93.78%, avg=8118.50, stdev=34.65, 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=0.00%, sys=4.50%, ctx=59, 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=4329KiB/s (4433kB/s), 1082KiB/s-3839KiB/s (1108kB/s-3931kB/s), io=16.0MiB (16.8MB), run=3201-3785msec WRITE: bw=8657KiB/s (8865kB/s), 2164KiB/s-5024KiB/s (2216kB/s-5144kB/s), io=32.0MiB (33.6MB), run=2446-3785msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145197: Wed Sep 16 20:39:27 2026 read: IOPS=1, BW=4526KiB/s (4635kB/s)(12.0MiB/2715msec) clat (msec): min=728, max=1012, avg=883.32, stdev=144.05 lat (msec): min=728, max=1012, avg=883.32, stdev=144.05 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=10.72%, ctx=215, 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=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=145200: Wed Sep 16 20:39:27 2026 read: IOPS=0, BW=1308KiB/s (1340kB/s)(4096KiB/3131msec) clat (nsec): min=660000k, max=660000k, avg=659999593.00, stdev= 0.00 lat (nsec): min=660003k, max=660003k, avg=660002648.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2616KiB/s (2679kB/s)(8192KiB/3131msec); 0 zone resets clat (msec): min=500, max=1836, avg=1168.83, stdev=944.84 lat (msec): min=501, max=1837, avg=1169.34, stdev=944.83 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 1838], | 70.00th=[ 1838], 80.00th=[ 1838], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 8062, max= 8062, per=92.98%, avg=8062.00, 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=4.76%, ctx=96, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145201: Wed Sep 16 20:39:27 2026 write: IOPS=0, BW=3252KiB/s (3330kB/s)(12.0MiB/3779msec); 0 zone resets clat (msec): min=287, max=2001, avg=1208.53, stdev=864.50 lat (msec): min=287, max=2002, avg=1209.10, stdev=864.52 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 1334], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 2005], 80.00th=[ 2005], 90.00th=[ 2005], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 8062, max= 8094, per=93.16%, avg=8078.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.52%, ctx=53, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=145203: Wed Sep 16 20:39:27 2026 write: IOPS=0, BW=4086KiB/s (4185kB/s)(12.0MiB/3007msec); 0 zone resets clat (msec): min=293, max=1735, avg=905.06, stdev=745.04 lat (msec): min=294, max=1735, avg=905.51, stdev=745.11 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 8159, max= 8159, per=94.10%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.39%, ctx=52, 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=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=5233KiB/s (5358kB/s), 1308KiB/s-4526KiB/s (1340kB/s-4635kB/s), io=16.0MiB (16.8MB), run=2715-3131msec WRITE: bw=8671KiB/s (8879kB/s), 2616KiB/s-4086KiB/s (2679kB/s-4185kB/s), io=32.0MiB (33.6MB), run=3007-3779msec