== sanity test 398b: DIO and buffer IO race ============== 15:15:23 (1787858123) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.11942 s, 8.2 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=145891: Thu Aug 27 15:17:48 2026 read: IOPS=12, BW=48.3KiB/s (49.4kB/s)(5992KiB/124158msec) clat (usec): min=30, max=725389, avg=40844.72, stdev=34775.82 lat (usec): min=30, max=725392, avg=40848.17, stdev=34774.80 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 60], 10.00th=[ 8455], 20.00th=[ 18220], | 30.00th=[ 23462], 40.00th=[ 27919], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 50070], 80.00th=[ 61080], 90.00th=[ 79168], 95.00th=[ 96994], | 99.00th=[156238], 99.50th=[166724], 99.90th=[196084], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 7, max= 110, per=25.45%, avg=48.36, stdev=20.99, samples=242 iops : min= 1, max= 27, avg=11.45, stdev= 5.28, samples=242 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(6296KiB/124158msec); 0 zone resets clat (usec): min=851, max=475986, avg=39688.09, stdev=41560.66 lat (usec): min=852, max=475987, avg=39690.53, stdev=41560.91 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1385], 20.00th=[ 3458], | 30.00th=[ 7832], 40.00th=[ 18220], 50.00th=[ 30278], 60.00th=[ 40109], | 70.00th=[ 52691], 80.00th=[ 69731], 90.00th=[ 92799], 95.00th=[113771], | 99.00th=[168821], 99.50th=[187696], 99.90th=[329253], 99.95th=[476054], | 99.99th=[476054] bw ( KiB/s): min= 7, max= 135, per=25.33%, avg=50.40, stdev=21.90, samples=244 iops : min= 1, max= 33, avg=11.97, stdev= 5.52, samples=244 lat (usec) : 50=0.68%, 100=3.55%, 250=0.16%, 500=0.07%, 750=0.10% lat (usec) : 1000=0.20% lat (msec) : 2=7.13%, 4=3.84%, 10=6.05%, 20=10.48%, 50=36.69% lat (msec) : 100=24.87%, 250=6.02%, 500=0.13%, 750=0.03% cpu : usr=0.07%, sys=4.69%, ctx=6407, 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=145892: Thu Aug 27 15:17:48 2026 read: IOPS=11, BW=47.4KiB/s (48.5kB/s)(5940KiB/125429msec) clat (usec): min=36, max=234543, avg=40632.10, stdev=29899.82 lat (usec): min=36, max=234544, avg=40633.65, stdev=29899.68 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 61], 10.00th=[ 8979], 20.00th=[ 18482], | 30.00th=[ 23200], 40.00th=[ 28705], 50.00th=[ 33817], 60.00th=[ 41157], | 70.00th=[ 50070], 80.00th=[ 61604], 90.00th=[ 78119], 95.00th=[ 94897], | 99.00th=[145753], 99.50th=[160433], 99.90th=[225444], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 5, max= 111, per=24.82%, avg=47.15, stdev=20.45, samples=245 iops : min= 1, max= 27, avg=11.16, stdev= 5.14, samples=245 write: IOPS=12, BW=50.6KiB/s (51.8kB/s)(6348KiB/125429msec); 0 zone resets clat (usec): min=842, max=750265, avg=40739.99, stdev=45787.46 lat (usec): min=842, max=750267, avg=40743.39, stdev=45786.62 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1467], 20.00th=[ 3654], | 30.00th=[ 8356], 40.00th=[ 19268], 50.00th=[ 30278], 60.00th=[ 41157], | 70.00th=[ 54264], 80.00th=[ 70779], 90.00th=[ 94897], 95.00th=[115868], | 99.00th=[183501], 99.50th=[256902], 99.90th=[375391], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 7, max= 119, per=25.28%, avg=50.31, stdev=22.01, samples=245 iops : min= 1, max= 29, avg=11.94, stdev= 5.53, samples=245 lat (usec) : 50=0.59%, 100=3.39%, 250=0.29%, 500=0.07%, 1000=0.26% lat (msec) : 2=6.87%, 4=4.17%, 10=6.32%, 20=10.48%, 50=35.94% lat (msec) : 100=25.33%, 250=6.02%, 500=0.26%, 1000=0.03% cpu : usr=0.08%, sys=4.80%, ctx=6413, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145893: Thu Aug 27 15:17:48 2026 read: IOPS=11, BW=47.9KiB/s (49.0kB/s)(6028KiB/125889msec) clat (usec): min=26, max=379117, avg=39571.78, stdev=31672.83 lat (usec): min=26, max=379118, avg=39574.49, stdev=31672.55 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 145], 20.00th=[ 18220], | 30.00th=[ 23462], 40.00th=[ 28181], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 46924], 80.00th=[ 58983], 90.00th=[ 74974], 95.00th=[ 92799], | 99.00th=[156238], 99.50th=[181404], 99.90th=[283116], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 7, max= 111, per=25.17%, avg=47.82, stdev=22.40, samples=245 iops : min= 1, max= 27, avg=11.32, stdev= 5.63, samples=245 write: IOPS=12, BW=49.7KiB/s (50.9kB/s)(6260KiB/125889msec); 0 zone resets clat (usec): min=805, max=935598, avg=42068.92, stdev=49134.49 lat (usec): min=805, max=935600, avg=42070.89, stdev=49134.42 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1172], 10.00th=[ 1500], 20.00th=[ 3392], | 30.00th=[ 8225], 40.00th=[ 19006], 50.00th=[ 31589], 60.00th=[ 42730], | 70.00th=[ 54264], 80.00th=[ 72877], 90.00th=[ 95945], 95.00th=[121111], | 99.00th=[196084], 99.50th=[242222], 99.90th=[354419], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 7, max= 119, per=24.86%, avg=49.47, stdev=20.42, samples=246 iops : min= 1, max= 29, avg=11.73, stdev= 5.15, samples=246 lat (usec) : 50=0.65%, 100=4.07%, 250=0.36%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.26% lat (msec) : 2=6.61%, 4=4.33%, 10=6.15%, 20=9.80%, 50=37.50% lat (msec) : 100=23.73%, 250=6.22%, 500=0.23%, 1000=0.03% cpu : usr=0.08%, sys=4.56%, ctx=6346, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145894: Thu Aug 27 15:17:48 2026 read: IOPS=12, BW=48.9KiB/s (50.1kB/s)(6052KiB/123688msec) clat (usec): min=33, max=229424, avg=39318.04, stdev=28333.73 lat (usec): min=33, max=229425, avg=39321.21, stdev=28333.89 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 7439], 20.00th=[ 18744], | 30.00th=[ 23725], 40.00th=[ 28181], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 48497], 80.00th=[ 57934], 90.00th=[ 73925], 95.00th=[ 91751], | 99.00th=[135267], 99.50th=[154141], 99.90th=[181404], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 7, max= 110, per=25.73%, avg=48.88, stdev=21.05, samples=242 iops : min= 1, max= 27, avg=11.58, stdev= 5.31, samples=242 write: IOPS=12, BW=50.4KiB/s (51.6kB/s)(6236KiB/123688msec); 0 zone resets clat (usec): min=809, max=1120.7k, avg=40930.60, stdev=49344.65 lat (usec): min=811, max=1120.7k, avg=40932.22, stdev=49344.72 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1450], | 20.00th=[ 3949], 30.00th=[ 8029], 40.00th=[ 19006], | 50.00th=[ 30278], 60.00th=[ 41157], 70.00th=[ 54264], | 80.00th=[ 68682], 90.00th=[ 94897], 95.00th=[ 121111], | 99.00th=[ 179307], 99.50th=[ 191890], 99.90th=[ 312476], | 99.95th=[1115685], 99.99th=[1115685] bw ( KiB/s): min= 15, max= 126, per=25.51%, avg=50.76, stdev=20.25, samples=240 iops : min= 3, max= 31, avg=12.06, stdev= 5.09, samples=240 lat (usec) : 50=0.75%, 100=3.65%, 250=0.16%, 500=0.13%, 1000=0.29% lat (msec) : 2=6.51%, 4=3.71%, 10=6.93%, 20=9.64%, 50=37.79% lat (msec) : 100=24.06%, 250=6.28%, 500=0.07%, 2000=0.03% cpu : usr=0.07%, sys=4.72%, ctx=6395, 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=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=191KiB/s (195kB/s), 47.4KiB/s-48.9KiB/s (48.5kB/s-50.1kB/s), io=23.4MiB (24.6MB), run=123688-125889msec WRITE: bw=200KiB/s (204kB/s), 49.7KiB/s-50.7KiB/s (50.9kB/s-51.9kB/s), io=24.6MiB (25.7MB), run=123688-125889msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145887: Thu Aug 27 15:20:08 2026 read: IOPS=5, BW=22.7KiB/s (23.3kB/s)(5992KiB/263830msec) clat (msec): min=4, max=776, avg=36.30, stdev=41.63 lat (msec): min=4, max=776, avg=36.30, stdev=41.63 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 70], 95.00th=[ 95], | 99.00th=[ 190], 99.50th=[ 255], 99.90th=[ 502], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 96, per=28.42%, avg=25.58, stdev=16.82, samples=454 iops : min= 1, max= 24, avg= 5.80, stdev= 4.22, samples=454 write: IOPS=5, BW=23.9KiB/s (24.4kB/s)(6296KiB/263830msec); 0 zone resets clat (msec): min=33, max=538, avg=132.81, stdev=62.51 lat (msec): min=33, max=538, avg=132.81, stdev=62.51 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 62], 10.00th=[ 69], 20.00th=[ 84], | 30.00th=[ 96], 40.00th=[ 108], 50.00th=[ 120], 60.00th=[ 133], | 70.00th=[ 150], 80.00th=[ 176], 90.00th=[ 213], 95.00th=[ 255], | 99.00th=[ 330], 99.50th=[ 380], 99.90th=[ 527], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7, max= 56, per=25.22%, avg=23.71, stdev=10.46, samples=513 iops : min= 1, max= 14, avg= 5.32, stdev= 2.68, samples=513 lat (msec) : 10=3.71%, 20=15.04%, 50=21.19%, 100=24.12%, 250=32.94% lat (msec) : 500=2.83%, 750=0.13%, 1000=0.03% cpu : usr=0.04%, sys=1.12%, ctx=5153, 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=145888: Thu Aug 27 15:20:08 2026 read: IOPS=5, BW=22.4KiB/s (22.9kB/s)(5940KiB/265511msec) clat (msec): min=4, max=804, avg=36.77, stdev=40.46 lat (msec): min=4, max=804, avg=36.78, stdev=40.46 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 52], 90.00th=[ 74], 95.00th=[ 104], | 99.00th=[ 190], 99.50th=[ 230], 99.90th=[ 380], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 112, per=27.53%, avg=24.78, stdev=16.80, samples=463 iops : min= 1, max= 28, avg= 5.60, stdev= 4.27, samples=463 write: IOPS=5, BW=23.9KiB/s (24.5kB/s)(6348KiB/265511msec); 0 zone resets clat (msec): min=33, max=513, avg=132.64, stdev=63.10 lat (msec): min=33, max=513, avg=132.64, stdev=63.10 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 60], 10.00th=[ 69], 20.00th=[ 82], | 30.00th=[ 94], 40.00th=[ 107], 50.00th=[ 118], 60.00th=[ 132], | 70.00th=[ 150], 80.00th=[ 176], 90.00th=[ 220], 95.00th=[ 259], | 99.00th=[ 330], 99.50th=[ 376], 99.90th=[ 506], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 7, max= 63, per=25.14%, avg=23.63, stdev=10.67, samples=518 iops : min= 1, max= 15, avg= 5.31, stdev= 2.72, samples=518 lat (msec) : 10=3.84%, 20=14.49%, 50=21.00%, 100=24.87%, 250=32.71% lat (msec) : 500=2.99%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.15%, ctx=5251, 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=145889: Thu Aug 27 15:20:08 2026 read: IOPS=5, BW=22.8KiB/s (23.3kB/s)(6028KiB/264623msec) clat (msec): min=5, max=518, avg=39.39, stdev=39.69 lat (msec): min=5, max=518, avg=39.40, stdev=39.69 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=[ 33], | 70.00th=[ 42], 80.00th=[ 54], 90.00th=[ 83], 95.00th=[ 108], | 99.00th=[ 192], 99.50th=[ 245], 99.90th=[ 472], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 7, max= 79, per=27.48%, avg=24.73, stdev=16.34, samples=471 iops : min= 1, max= 19, avg= 5.58, stdev= 4.12, samples=471 write: IOPS=5, BW=23.7KiB/s (24.2kB/s)(6260KiB/264623msec); 0 zone resets clat (msec): min=26, max=916, avg=130.88, stdev=62.94 lat (msec): min=26, max=916, avg=130.89, stdev=62.94 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 69], 20.00th=[ 82], | 30.00th=[ 92], 40.00th=[ 104], 50.00th=[ 118], 60.00th=[ 131], | 70.00th=[ 150], 80.00th=[ 176], 90.00th=[ 209], 95.00th=[ 247], | 99.00th=[ 330], 99.50th=[ 363], 99.90th=[ 393], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 63, per=24.88%, avg=23.39, stdev=10.97, samples=516 iops : min= 1, max= 15, avg= 5.24, stdev= 2.81, samples=516 lat (msec) : 10=2.93%, 20=13.22%, 50=22.88%, 100=26.11%, 250=32.16% lat (msec) : 500=2.64%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.14%, ctx=5362, 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=145890: Thu Aug 27 15:20:08 2026 read: IOPS=5, BW=23.0KiB/s (23.6kB/s)(6052KiB/262947msec) clat (msec): min=5, max=512, avg=37.44, stdev=40.60 lat (msec): min=5, max=512, avg=37.45, stdev=40.61 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 52], 90.00th=[ 77], 95.00th=[ 105], | 99.00th=[ 188], 99.50th=[ 257], 99.90th=[ 502], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 7, max= 96, per=29.04%, avg=26.13, stdev=17.25, samples=448 iops : min= 1, max= 24, avg= 5.92, stdev= 4.35, samples=448 write: IOPS=5, BW=23.7KiB/s (24.3kB/s)(6236KiB/262947msec); 0 zone resets clat (msec): min=35, max=922, avg=132.04, stdev=65.56 lat (msec): min=35, max=922, avg=132.04, stdev=65.56 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 82], | 30.00th=[ 93], 40.00th=[ 104], 50.00th=[ 116], 60.00th=[ 133], | 70.00th=[ 150], 80.00th=[ 176], 90.00th=[ 213], 95.00th=[ 249], | 99.00th=[ 351], 99.50th=[ 388], 99.90th=[ 527], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 48, per=25.01%, avg=23.51, stdev=10.34, samples=511 iops : min= 1, max= 12, avg= 5.26, stdev= 2.67, samples=511 lat (msec) : 10=4.52%, 20=14.19%, 50=21.16%, 100=24.90%, 250=32.39% lat (msec) : 500=2.67%, 750=0.13%, 1000=0.03% cpu : usr=0.04%, sys=1.09%, ctx=5258, 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=90.4KiB/s (92.6kB/s), 22.4KiB/s-23.0KiB/s (22.9kB/s-23.6kB/s), io=23.4MiB (24.6MB), run=262947-265511msec WRITE: bw=94.7KiB/s (96.0kB/s), 23.7KiB/s-23.9KiB/s (24.2kB/s-24.5kB/s), io=24.6MiB (25.7MB), run=262947-265511msec 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=145947: Thu Aug 27 15:20:48 2026 read: IOPS=12, BW=206KiB/s (210kB/s)(5920KiB/28801msec) clat (usec): min=37, max=180645, avg=40925.20, stdev=33917.91 lat (usec): min=38, max=180645, avg=40927.08, stdev=33918.10 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 60], 10.00th=[ 64], 20.00th=[ 93], | 30.00th=[ 21627], 40.00th=[ 29492], 50.00th=[ 36963], 60.00th=[ 46400], | 70.00th=[ 55837], 80.00th=[ 67634], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[128451], 99.50th=[179307], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 63, max= 476, per=24.70%, avg=204.52, stdev=82.14, samples=56 iops : min= 3, max= 29, avg=12.05, stdev= 5.14, samples=56 write: IOPS=13, BW=221KiB/s (226kB/s)(6368KiB/28801msec); 0 zone resets clat (usec): min=1496, max=214717, avg=33746.68, stdev=37345.25 lat (usec): min=1500, max=214721, avg=33768.93, stdev=37378.65 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1860], 10.00th=[ 2409], 20.00th=[ 4490], | 30.00th=[ 7177], 40.00th=[ 11076], 50.00th=[ 19792], 60.00th=[ 27919], | 70.00th=[ 41681], 80.00th=[ 62653], 90.00th=[ 86508], 95.00th=[112722], | 99.00th=[168821], 99.50th=[189793], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 63, max= 477, per=25.39%, avg=221.12, stdev=91.34, samples=56 iops : min= 3, max= 29, avg=13.09, stdev= 5.80, samples=56 lat (usec) : 50=1.43%, 100=8.46%, 250=0.65%, 500=0.26%, 750=0.13% lat (msec) : 2=4.17%, 4=5.47%, 10=10.16%, 20=8.98%, 50=28.78% lat (msec) : 100=25.00%, 250=6.51% cpu : usr=0.09%, sys=5.45%, ctx=1401, 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=145948: Thu Aug 27 15:20:48 2026 read: IOPS=12, BW=199KiB/s (203kB/s)(5744KiB/28917msec) clat (usec): min=37, max=283690, avg=40891.24, stdev=36613.30 lat (usec): min=37, max=283691, avg=40892.58, stdev=36613.54 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 59], 10.00th=[ 72], 20.00th=[ 206], | 30.00th=[ 22414], 40.00th=[ 28705], 50.00th=[ 35914], 60.00th=[ 43254], | 70.00th=[ 52167], 80.00th=[ 65799], 90.00th=[ 91751], 95.00th=[102237], | 99.00th=[139461], 99.50th=[254804], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 63, max= 384, per=24.07%, avg=199.34, stdev=82.85, samples=56 iops : min= 3, max= 24, avg=11.71, stdev= 5.24, samples=56 write: IOPS=14, BW=226KiB/s (232kB/s)(6544KiB/28917msec); 0 zone resets clat (usec): min=1293, max=239898, avg=34231.19, stdev=37352.11 lat (usec): min=1294, max=239901, avg=34236.20, stdev=37352.43 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1778], 10.00th=[ 2311], 20.00th=[ 4424], | 30.00th=[ 7898], 40.00th=[ 12649], 50.00th=[ 20055], 60.00th=[ 29230], | 70.00th=[ 42206], 80.00th=[ 61604], 90.00th=[ 87557], 95.00th=[110625], | 99.00th=[149947], 99.50th=[158335], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 63, max= 509, per=25.94%, avg=225.95, stdev=94.54, samples=56 iops : min= 3, max= 31, avg=13.39, stdev= 5.95, samples=56 lat (usec) : 50=1.17%, 100=6.90%, 250=1.56%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=4.30%, 4=5.99%, 10=8.72%, 20=9.90%, 50=31.90% lat (msec) : 100=22.53%, 250=6.38%, 500=0.26% cpu : usr=0.07%, sys=5.28%, ctx=1413, 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=145949: Thu Aug 27 15:20:48 2026 read: IOPS=14, BW=229KiB/s (235kB/s)(6256KiB/27261msec) clat (usec): min=38, max=187680, avg=38979.07, stdev=32193.46 lat (usec): min=39, max=187682, avg=38988.90, stdev=32199.38 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 62], 10.00th=[ 71], 20.00th=[ 88], | 30.00th=[ 21103], 40.00th=[ 30016], 50.00th=[ 35914], 60.00th=[ 43254], | 70.00th=[ 52691], 80.00th=[ 63701], 90.00th=[ 81265], 95.00th=[ 95945], | 99.00th=[154141], 99.50th=[166724], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 31, max= 541, per=28.00%, avg=231.85, stdev=94.60, samples=53 iops : min= 1, max= 33, avg=13.77, stdev= 5.97, samples=53 write: IOPS=13, BW=221KiB/s (227kB/s)(6032KiB/27261msec); 0 zone resets clat (usec): min=1312, max=180606, avg=31638.53, stdev=34186.25 lat (usec): min=1314, max=180609, avg=31647.15, stdev=34206.59 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1680], 10.00th=[ 2114], 20.00th=[ 4424], | 30.00th=[ 7177], 40.00th=[ 11731], 50.00th=[ 17171], 60.00th=[ 28181], | 70.00th=[ 38011], 80.00th=[ 55313], 90.00th=[ 82314], 95.00th=[105382], | 99.00th=[154141], 99.50th=[173016], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 92, max= 478, per=25.39%, avg=221.17, stdev=85.64, samples=53 iops : min= 5, max= 29, avg=13.09, stdev= 5.41, samples=53 lat (usec) : 50=0.91%, 100=9.38%, 250=0.78%, 500=0.13%, 1000=0.26% lat (msec) : 2=4.56%, 4=4.69%, 10=8.20%, 20=11.46%, 50=31.90% lat (msec) : 100=23.31%, 250=4.43% cpu : usr=0.09%, sys=5.64%, ctx=1408, 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=145950: Thu Aug 27 15:20:48 2026 read: IOPS=13, BW=219KiB/s (224kB/s)(6032KiB/27558msec) clat (usec): min=37, max=276591, avg=37125.86, stdev=33800.73 lat (usec): min=37, max=276592, avg=37131.15, stdev=33800.82 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 61], 10.00th=[ 71], 20.00th=[ 93], | 30.00th=[ 18744], 40.00th=[ 26608], 50.00th=[ 33424], 60.00th=[ 42730], | 70.00th=[ 51119], 80.00th=[ 60031], 90.00th=[ 80217], 95.00th=[ 90702], | 99.00th=[127402], 99.50th=[193987], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 62, max= 440, per=26.48%, avg=219.28, stdev=84.45, samples=54 iops : min= 3, max= 27, avg=12.98, stdev= 5.33, samples=54 write: IOPS=14, BW=227KiB/s (232kB/s)(6256KiB/27558msec); 0 zone resets clat (usec): min=1413, max=257598, avg=34014.61, stdev=38461.62 lat (usec): min=1414, max=257599, avg=34016.93, stdev=38461.56 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1795], 10.00th=[ 2606], 20.00th=[ 4817], | 30.00th=[ 7111], 40.00th=[ 10421], 50.00th=[ 17695], 60.00th=[ 29754], | 70.00th=[ 42206], 80.00th=[ 60556], 90.00th=[ 86508], 95.00th=[106431], | 99.00th=[170918], 99.50th=[229639], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 31, max= 416, per=26.16%, avg=227.81, stdev=90.40, samples=54 iops : min= 1, max= 26, avg=13.52, stdev= 5.75, samples=54 lat (usec) : 50=0.65%, 100=10.03%, 250=0.91%, 500=0.13%, 750=0.39% lat (msec) : 2=3.78%, 4=4.95%, 10=11.59%, 20=9.64%, 50=29.56% lat (msec) : 100=23.18%, 250=4.95%, 500=0.26% cpu : usr=0.06%, sys=5.27%, ctx=1357, 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=828KiB/s (848kB/s), 199KiB/s-229KiB/s (203kB/s-235kB/s), io=23.4MiB (24.5MB), run=27261-28917msec WRITE: bw=871KiB/s (892kB/s), 221KiB/s-227KiB/s (226kB/s-232kB/s), io=24.6MiB (25.8MB), run=27261-28917msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145952: Thu Aug 27 15:21:35 2026 read: IOPS=4, BW=79.4KiB/s (81.3kB/s)(5920KiB/74582msec) clat (msec): min=5, max=259, avg=38.96, stdev=36.74 lat (msec): min=5, max=259, avg=38.97, stdev=36.74 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 39], 80.00th=[ 51], 90.00th=[ 84], 95.00th=[ 124], | 99.00th=[ 186], 99.50th=[ 245], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 30, max= 318, per=28.78%, avg=91.81, stdev=59.33, samples=126 iops : min= 1, max= 19, avg= 5.01, stdev= 3.79, samples=126 write: IOPS=5, BW=85.4KiB/s (87.4kB/s)(6368KiB/74582msec); 0 zone resets clat (msec): min=38, max=466, avg=150.96, stdev=72.86 lat (msec): min=38, max=466, avg=150.97, stdev=72.88 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 74], 20.00th=[ 89], | 30.00th=[ 105], 40.00th=[ 117], 50.00th=[ 131], 60.00th=[ 153], | 70.00th=[ 178], 80.00th=[ 209], 90.00th=[ 247], 95.00th=[ 292], | 99.00th=[ 384], 99.50th=[ 447], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 24, max= 190, per=25.23%, avg=84.78, stdev=39.77, samples=147 iops : min= 1, max= 11, avg= 4.55, stdev= 2.56, samples=147 lat (msec) : 10=1.95%, 20=14.32%, 50=22.66%, 100=19.53%, 250=36.33% lat (msec) : 500=5.21% cpu : usr=0.04%, sys=1.08%, ctx=1236, 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=145953: Thu Aug 27 15:21:35 2026 read: IOPS=4, BW=76.6KiB/s (78.5kB/s)(5744KiB/74953msec) clat (msec): min=6, max=322, avg=38.08, stdev=37.56 lat (msec): min=6, max=322, avg=38.08, stdev=37.56 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 37], 80.00th=[ 51], 90.00th=[ 78], 95.00th=[ 102], | 99.00th=[ 224], 99.50th=[ 251], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 25, max= 320, per=28.91%, avg=92.22, stdev=61.23, samples=122 iops : min= 1, max= 20, avg= 5.02, stdev= 3.87, samples=122 write: IOPS=5, BW=87.3KiB/s (89.4kB/s)(6544KiB/74953msec); 0 zone resets clat (msec): min=38, max=455, avg=149.71, stdev=71.43 lat (msec): min=38, max=455, avg=149.71, stdev=71.44 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 61], 10.00th=[ 72], 20.00th=[ 88], | 30.00th=[ 105], 40.00th=[ 121], 50.00th=[ 138], 60.00th=[ 153], | 70.00th=[ 180], 80.00th=[ 203], 90.00th=[ 241], 95.00th=[ 288], | 99.00th=[ 388], 99.50th=[ 405], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 25, max= 255, per=26.56%, avg=89.24, stdev=41.34, samples=144 iops : min= 1, max= 15, avg= 4.83, stdev= 2.66, samples=144 lat (msec) : 10=2.99%, 20=11.98%, 50=23.05%, 100=20.96%, 250=36.20% lat (msec) : 500=4.82% cpu : usr=0.05%, sys=1.05%, ctx=1283, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145954: Thu Aug 27 15:21:35 2026 read: IOPS=5, BW=85.4KiB/s (87.5kB/s)(6256KiB/73247msec) clat (msec): min=7, max=200, avg=36.72, stdev=29.25 lat (msec): min=7, max=200, avg=36.72, stdev=29.25 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 52], 90.00th=[ 73], 95.00th=[ 95], | 99.00th=[ 161], 99.50th=[ 180], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 31, max= 352, per=30.51%, avg=97.32, stdev=65.72, samples=127 iops : min= 1, max= 22, avg= 5.34, stdev= 4.17, samples=127 write: IOPS=5, BW=82.4KiB/s (84.3kB/s)(6032KiB/73247msec); 0 zone resets clat (msec): min=38, max=523, avg=156.06, stdev=76.17 lat (msec): min=38, max=523, avg=156.07, stdev=76.17 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 75], 20.00th=[ 92], | 30.00th=[ 109], 40.00th=[ 122], 50.00th=[ 138], 60.00th=[ 159], | 70.00th=[ 180], 80.00th=[ 218], 90.00th=[ 262], 95.00th=[ 305], | 99.00th=[ 376], 99.50th=[ 481], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 25, max= 191, per=24.55%, avg=82.49, stdev=36.58, samples=143 iops : min= 1, max= 11, avg= 4.40, stdev= 2.33, samples=143 lat (msec) : 10=1.30%, 20=14.58%, 50=24.61%, 100=20.18%, 250=33.07% lat (msec) : 500=6.12%, 750=0.13% cpu : usr=0.05%, sys=1.15%, ctx=1330, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145955: Thu Aug 27 15:21:35 2026 read: IOPS=5, BW=81.4KiB/s (83.3kB/s)(6032KiB/74140msec) clat (msec): min=5, max=333, avg=39.98, stdev=39.58 lat (msec): min=5, max=333, avg=39.99, stdev=39.58 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 42], 80.00th=[ 54], 90.00th=[ 85], 95.00th=[ 123], | 99.00th=[ 194], 99.50th=[ 251], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 30, max= 351, per=29.87%, avg=95.29, stdev=61.36, samples=123 iops : min= 1, max= 21, avg= 5.21, stdev= 3.87, samples=123 write: IOPS=5, BW=84.4KiB/s (86.4kB/s)(6256KiB/74140msec); 0 zone resets clat (msec): min=41, max=546, avg=150.96, stdev=75.30 lat (msec): min=41, max=546, avg=150.96, stdev=75.30 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 64], 10.00th=[ 74], 20.00th=[ 90], | 30.00th=[ 101], 40.00th=[ 115], 50.00th=[ 131], 60.00th=[ 155], | 70.00th=[ 178], 80.00th=[ 211], 90.00th=[ 241], 95.00th=[ 288], | 99.00th=[ 388], 99.50th=[ 447], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 31, max= 191, per=25.66%, avg=86.22, stdev=40.37, samples=142 iops : min= 1, max= 11, avg= 4.63, stdev= 2.60, samples=142 lat (msec) : 10=2.86%, 20=13.15%, 50=22.79%, 100=22.14%, 250=34.51% lat (msec) : 500=4.43%, 750=0.13% cpu : usr=0.05%, sys=1.28%, ctx=1402, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=320KiB/s (327kB/s), 76.6KiB/s-85.4KiB/s (78.5kB/s-87.5kB/s), io=23.4MiB (24.5MB), run=73247-74953msec WRITE: bw=336KiB/s (344kB/s), 82.4KiB/s-87.3KiB/s (84.3kB/s-89.4kB/s), io=24.6MiB (25.8MB), run=73247-74953msec 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=145972: Thu Aug 27 15:21:49 2026 read: IOPS=1, BW=1808KiB/s (1851kB/s)(7168KiB/3965msec) clat (msec): min=96, max=846, avg=311.94, stdev=249.84 lat (msec): min=96, max=846, avg=311.94, stdev=249.84 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 138], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 249], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 321], 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= 2015, max= 3849, per=55.49%, avg=2395.40, stdev=812.66, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1291KiB/s (1322kB/s)(5120KiB/3965msec); 0 zone resets clat (msec): min=194, max=501, avg=337.26, stdev=142.54 lat (msec): min=194, max=501, avg=337.36, stdev=142.54 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 472], 80.00th=[ 472], 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= 2011, max= 2048, per=33.55%, avg=2028.25, stdev=18.06, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=2.57%, ctx=57, 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=145973: Thu Aug 27 15:21:49 2026 read: IOPS=0, BW=439KiB/s (449kB/s)(2048KiB/4668msec) clat (msec): min=99, max=187, avg=143.75, stdev=62.15 lat (msec): min=99, max=187, avg=143.75, stdev=62.16 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 101], | 30.00th=[ 101], 40.00th=[ 101], 50.00th=[ 101], 60.00th=[ 188], | 70.00th=[ 188], 80.00th=[ 188], 90.00th=[ 188], 95.00th=[ 188], | 99.00th=[ 188], 99.50th=[ 188], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 1367, max= 2015, per=39.17%, avg=1691.00, stdev=458.21, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2194KiB/s (2246kB/s)(10.0MiB/4668msec); 0 zone resets clat (msec): min=187, max=1029, avg=417.06, stdev=301.94 lat (msec): min=187, max=1029, avg=417.15, stdev=301.94 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 203], 40.00th=[ 209], 50.00th=[ 239], 60.00th=[ 330], | 70.00th=[ 338], 80.00th=[ 642], 90.00th=[ 810], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 2015, max= 4096, per=39.33%, avg=2377.50, stdev=842.01, samples=6 iops : min= 1, max= 4, avg= 1.83, stdev= 1.17, samples=6 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.04%, sys=3.77%, ctx=90, 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=145974: Thu Aug 27 15:21:49 2026 read: IOPS=1, BW=1397KiB/s (1430kB/s)(6144KiB/4399msec) clat (msec): min=49, max=456, avg=168.06, stdev=146.84 lat (msec): min=49, max=456, avg=168.06, stdev=146.84 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 96], | 30.00th=[ 96], 40.00th=[ 97], 50.00th=[ 97], 60.00th=[ 155], | 70.00th=[ 157], 80.00th=[ 157], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 2035, max= 4031, per=58.80%, avg=2538.25, stdev=995.18, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1397KiB/s (1430kB/s)(6144KiB/4399msec); 0 zone resets clat (msec): min=152, max=1335, avg=486.20, stdev=428.95 lat (msec): min=153, max=1335, avg=486.34, stdev=428.97 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 380], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 2015, max= 2048, per=33.73%, avg=2038.80, stdev=14.45, samples=5 iops : min= 1, max= 2, avg= 1.60, stdev= 0.55, samples=5 lat (msec) : 50=8.33%, 100=16.67%, 250=25.00%, 500=41.67%, 2000=8.33% cpu : usr=0.02%, sys=4.21%, ctx=109, 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=145975: Thu Aug 27 15:21:49 2026 read: IOPS=1, BW=1079KiB/s (1105kB/s)(5120KiB/4743msec) clat (msec): min=42, max=553, avg=274.57, stdev=209.57 lat (msec): min=42, max=553, avg=274.57, stdev=209.57 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 43], 10.00th=[ 43], 20.00th=[ 43], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 2039, max= 4079, per=63.05%, avg=2722.00, stdev=1175.21, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1511KiB/s (1548kB/s)(7168KiB/4743msec); 0 zone resets clat (msec): min=94, max=1594, avg=458.38, stdev=530.90 lat (msec): min=94, max=1594, avg=458.50, stdev=530.91 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 107], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 284], 60.00th=[ 334], | 70.00th=[ 334], 80.00th=[ 609], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 1910, max= 2043, per=33.14%, avg=2003.60, stdev=54.20, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=2.53%, ctx=98, 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=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=4318KiB/s (4422kB/s), 439KiB/s-1808KiB/s (449kB/s-1851kB/s), io=20.0MiB (20.0MB), run=3965-4743msec WRITE: bw=6045KiB/s (6190kB/s), 1291KiB/s-2194KiB/s (1322kB/s-2246kB/s), io=28.0MiB (29.4MB), run=3965-4743msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145976: Thu Aug 27 15:21:49 2026 read: IOPS=1, BW=1723KiB/s (1764kB/s)(7168KiB/4160msec) clat (msec): min=151, max=1248, avg=348.36, stdev=400.84 lat (msec): min=151, max=1248, avg=348.36, stdev=400.84 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 155], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 192], 60.00th=[ 199], | 70.00th=[ 199], 80.00th=[ 321], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 1939, max= 4096, per=55.46%, avg=2419.60, stdev=937.99, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 write: IOPS=1, BW=1231KiB/s (1260kB/s)(5120KiB/4160msec); 0 zone resets clat (msec): min=91, max=587, avg=329.28, stdev=232.66 lat (msec): min=91, max=587, avg=329.38, stdev=232.65 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 91], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 245], 60.00th=[ 245], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 2035, max= 4039, per=41.63%, avg=2542.50, stdev=997.69, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=8.33%, 750=16.67%, 2000=8.33% cpu : usr=0.02%, sys=11.81%, ctx=340, 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=145977: Thu Aug 27 15:21:49 2026 read: IOPS=0, BW=436KiB/s (447kB/s)(2048KiB/4694msec) clat (msec): min=153, max=242, avg=198.26, stdev=62.67 lat (msec): min=153, max=242, avg=198.26, stdev=62.67 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 155], 60.00th=[ 243], | 70.00th=[ 243], 80.00th=[ 243], 90.00th=[ 243], 95.00th=[ 243], | 99.00th=[ 243], 99.50th=[ 243], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 1996, max= 2019, per=46.01%, avg=2007.50, stdev=16.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2182KiB/s (2234kB/s)(10.0MiB/4694msec); 0 zone resets clat (msec): min=153, max=1078, avg=385.32, stdev=314.51 lat (msec): min=153, max=1079, avg=385.43, stdev=314.49 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 161], | 30.00th=[ 163], 40.00th=[ 176], 50.00th=[ 241], 60.00th=[ 257], | 70.00th=[ 347], 80.00th=[ 493], 90.00th=[ 785], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 2007, max= 6131, per=60.10%, avg=3671.20, stdev=1721.24, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 1.79, samples=5 lat (msec) : 250=58.33%, 500=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=11.44%, ctx=131, 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=145978: Thu Aug 27 15:21:49 2026 read: IOPS=1, BW=1705KiB/s (1746kB/s)(6144KiB/3603msec) clat (usec): min=1578, max=309129, avg=117099.27, stdev=113694.34 lat (usec): min=1579, max=309130, avg=117100.72, stdev=113694.21 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1582], 10.00th=[ 1582], 20.00th=[ 8356], | 30.00th=[ 8356], 40.00th=[ 98042], 50.00th=[ 98042], 60.00th=[121111], | 70.00th=[164627], 80.00th=[164627], 90.00th=[308282], 95.00th=[308282], | 99.00th=[308282], 99.50th=[308282], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 4015, max= 6144, per=100.00%, avg=5079.50, stdev=1505.43, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1705KiB/s (1746kB/s)(6144KiB/3603msec); 0 zone resets clat (msec): min=108, max=1476, avg=437.70, stdev=529.92 lat (msec): min=108, max=1476, avg=438.32, stdev=529.57 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 213], | 70.00th=[ 518], 80.00th=[ 518], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 1984, max= 4096, per=39.63%, avg=2420.40, stdev=936.78, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 lat (msec) : 2=8.33%, 10=8.33%, 100=8.33%, 250=50.00%, 500=8.33% lat (msec) : 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=10.41%, ctx=150, 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=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=145979: Thu Aug 27 15:21:49 2026 read: IOPS=1, BW=1308KiB/s (1340kB/s)(5120KiB/3914msec) clat (usec): min=582, max=245247, avg=92525.81, stdev=125249.16 lat (usec): min=583, max=245248, avg=92526.83, stdev=125248.95 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[ 586], | 30.00th=[ 611], 40.00th=[ 611], 50.00th=[ 3130], 60.00th=[ 3130], | 70.00th=[212861], 80.00th=[212861], 90.00th=[244319], 95.00th=[244319], | 99.00th=[244319], 99.50th=[244319], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1831KiB/s (1875kB/s)(7168KiB/3914msec); 0 zone resets clat (msec): min=85, max=1383, avg=428.11, stdev=469.57 lat (msec): min=85, max=1384, avg=428.34, stdev=469.60 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 91], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 192], 60.00th=[ 460], | 70.00th=[ 460], 80.00th=[ 634], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 1996, max= 6059, per=66.31%, avg=4050.33, stdev=2031.88, samples=3 iops : min= 1, max= 5, avg= 3.33, stdev= 2.08, samples=3 lat (usec) : 750=16.67% lat (msec) : 4=8.33%, 100=16.67%, 250=33.33%, 500=8.33%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=8.51%, ctx=114, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4363KiB/s (4468kB/s), 436KiB/s-1723KiB/s (447kB/s-1764kB/s), io=20.0MiB (20.0MB), run=3603-4694msec WRITE: bw=6108KiB/s (6255kB/s), 1231KiB/s-2182KiB/s (1260kB/s-2234kB/s), io=28.0MiB (29.4MB), run=3603-4694msec 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=145989: Thu Aug 27 15:22:02 2026 read: IOPS=1, BW=5297KiB/s (5424kB/s)(12.0MiB/2320msec) clat (msec): min=645, max=887, avg=728.06, stdev=137.87 lat (msec): min=645, max=887, avg=728.06, stdev=137.87 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=14.40%, ctx=263, 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=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=145991: Thu Aug 27 15:22:02 2026 read: IOPS=0, BW=1652KiB/s (1692kB/s)(4096KiB/2479msec) clat (nsec): min=645415k, max=645415k, avg=645415059.00, stdev= 0.00 lat (nsec): min=645417k, max=645417k, avg=645416851.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3305KiB/s (3384kB/s)(8192KiB/2479msec); 0 zone resets clat (msec): min=787, max=964, avg=875.85, stdev=125.31 lat (msec): min=787, max=965, avg=876.47, stdev=125.28 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 961], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8143, max= 8143, per=65.61%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=6.13%, ctx=114, 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=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=145993: Thu Aug 27 15:22:02 2026 write: IOPS=1, BW=4655KiB/s (4766kB/s)(12.0MiB/2640msec); 0 zone resets clat (msec): min=535, max=1357, avg=849.01, stdev=444.63 lat (msec): min=535, max=1358, avg=849.40, stdev=444.69 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 535], | 30.00th=[ 535], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 8078, max= 8143, per=65.34%, avg=8110.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.04%, sys=5.61%, ctx=71, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=145995: Thu Aug 27 15:22:02 2026 write: IOPS=1, BW=5832KiB/s (5972kB/s)(12.0MiB/2107msec); 0 zone resets clat (msec): min=439, max=794, avg=667.70, stdev=197.63 lat (msec): min=440, max=794, avg=668.16, stdev=197.53 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 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= 5475, max= 8143, per=54.86%, avg=6809.00, stdev=1886.56, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.05%, sys=4.61%, ctx=40, 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=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=6609KiB/s (6768kB/s), 1652KiB/s-5297KiB/s (1692kB/s-5424kB/s), io=16.0MiB (16.8MB), run=2320-2479msec WRITE: bw=12.1MiB/s (12.7MB/s), 3305KiB/s-5832KiB/s (3384kB/s-5972kB/s), io=32.0MiB (33.6MB), run=2107-2640msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145990: Thu Aug 27 15:22:03 2026 read: IOPS=0, BW=3594KiB/s (3680kB/s)(12.0MiB/3419msec) clat (msec): min=143, max=1765, avg=1101.41, stdev=850.08 lat (msec): min=143, max=1765, avg=1101.41, stdev=850.08 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 1401], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] 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 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.87%, ctx=51, 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=145992: Thu Aug 27 15:22:03 2026 read: IOPS=0, BW=1309KiB/s (1340kB/s)(4096KiB/3130msec) clat (nsec): min=747754k, max=747754k, avg=747753787.00, stdev= 0.00 lat (nsec): min=747757k, max=747757k, avg=747756654.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2617KiB/s (2680kB/s)(8192KiB/3130msec); 0 zone resets clat (msec): min=900, max=1368, avg=1134.73, stdev=331.07 lat (msec): min=904, max=1369, avg=1136.81, stdev=328.95 clat percentiles (msec): | 1.00th=[ 902], 5.00th=[ 902], 10.00th=[ 902], 20.00th=[ 902], | 30.00th=[ 902], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 1368], | 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= 8126, max= 8126, per=77.62%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.39%, ctx=49, 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=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=145994: Thu Aug 27 15:22:03 2026 write: IOPS=0, BW=3951KiB/s (4046kB/s)(12.0MiB/3110msec); 0 zone resets clat (msec): min=345, max=1616, avg=1005.39, stdev=636.43 lat (msec): min=346, max=1616, avg=1005.87, stdev=636.49 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 1053], 50.00th=[ 1053], 60.00th=[ 1053], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 8192, max= 8192, per=78.25%, 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=3.47%, ctx=39, 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=145996: Thu Aug 27 15:22:03 2026 write: IOPS=1, BW=5048KiB/s (5170kB/s)(12.0MiB/2434msec); 0 zone resets clat (msec): min=662, max=975, avg=766.88, stdev=180.32 lat (msec): min=663, max=975, avg=768.04, stdev=179.69 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 8110, max= 8143, per=77.62%, avg=8126.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=5.59%, ctx=42, 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=4792KiB/s (4907kB/s), 1309KiB/s-3594KiB/s (1340kB/s-3680kB/s), io=16.0MiB (16.8MB), run=3130-3419msec WRITE: bw=10.2MiB/s (10.7MB/s), 2617KiB/s-5048KiB/s (2680kB/s-5170kB/s), io=32.0MiB (33.6MB), run=2434-3130msec