== sanity test 398b: DIO and buffer IO race ============== 05:35:55 (1786354555) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.97854 s, 16.9 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=149970: Mon Aug 10 05:37:03 2026 read: IOPS=25, BW=103KiB/s (105kB/s)(5992KiB/58429msec) clat (usec): min=31, max=692235, avg=19807.49, stdev=21276.56 lat (usec): min=32, max=692237, avg=19808.49, stdev=21276.60 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 367], 10.00th=[ 8291], 20.00th=[ 10683], | 30.00th=[ 12780], 40.00th=[ 14877], 50.00th=[ 16909], 60.00th=[ 19530], | 70.00th=[ 22938], 80.00th=[ 27132], 90.00th=[ 33162], 95.00th=[ 39584], | 99.00th=[ 63177], 99.50th=[ 77071], 99.90th=[149947], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 13, max= 199, per=25.50%, avg=102.27, stdev=29.49, samples=116 iops : min= 3, max= 49, avg=25.12, stdev= 7.39, samples=116 write: IOPS=26, BW=108KiB/s (110kB/s)(6296KiB/58429msec); 0 zone resets clat (usec): min=763, max=128695, avg=18170.80, stdev=15933.60 lat (usec): min=763, max=128697, avg=18172.03, stdev=15933.66 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1876], 10.00th=[ 2704], 20.00th=[ 4293], | 30.00th=[ 6587], 40.00th=[ 10814], 50.00th=[ 14222], 60.00th=[ 18482], | 70.00th=[ 23462], 80.00th=[ 29492], 90.00th=[ 38536], 95.00th=[ 49021], | 99.00th=[ 70779], 99.50th=[ 83362], 99.90th=[ 99091], 99.95th=[128451], | 99.99th=[128451] bw ( KiB/s): min= 48, max= 223, per=25.79%, avg=108.30, stdev=29.06, samples=115 iops : min= 12, max= 55, avg=26.63, stdev= 7.28, samples=115 lat (usec) : 50=0.36%, 100=0.94%, 250=1.04%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.52% lat (msec) : 2=2.44%, 4=6.71%, 10=16.02%, 20=34.15%, 50=34.41% lat (msec) : 100=3.16%, 250=0.10%, 750=0.03% cpu : usr=0.10%, sys=19.62%, ctx=8211, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149971: Mon Aug 10 05:37:03 2026 read: IOPS=24, BW=99.3KiB/s (102kB/s)(5940KiB/59818msec) clat (usec): min=27, max=741494, avg=20415.81, stdev=22791.89 lat (usec): min=28, max=741495, avg=20416.89, stdev=22791.90 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 4883], 10.00th=[ 8356], 20.00th=[ 10945], | 30.00th=[ 12649], 40.00th=[ 14746], 50.00th=[ 16909], 60.00th=[ 20055], | 70.00th=[ 23462], 80.00th=[ 28181], 90.00th=[ 34341], 95.00th=[ 41681], | 99.00th=[ 66847], 99.50th=[ 74974], 99.90th=[154141], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 7, max= 207, per=24.68%, avg=98.96, stdev=30.07, samples=117 iops : min= 1, max= 51, avg=24.29, stdev= 7.53, samples=117 write: IOPS=26, BW=106KiB/s (109kB/s)(6348KiB/59818msec); 0 zone resets clat (usec): min=697, max=141750, avg=18488.21, stdev=16263.58 lat (usec): min=698, max=141751, avg=18489.51, stdev=16263.60 clat percentiles (usec): | 1.00th=[ 938], 5.00th=[ 1532], 10.00th=[ 2311], 20.00th=[ 3785], | 30.00th=[ 6718], 40.00th=[ 11076], 50.00th=[ 15139], 60.00th=[ 19268], | 70.00th=[ 23725], 80.00th=[ 29754], 90.00th=[ 38536], 95.00th=[ 50070], | 99.00th=[ 72877], 99.50th=[ 83362], 99.90th=[102237], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 31, max= 232, per=24.99%, avg=104.96, stdev=30.55, samples=117 iops : min= 7, max= 58, avg=25.79, stdev= 7.70, samples=117 lat (usec) : 50=0.36%, 100=0.85%, 250=1.04%, 750=0.10%, 1000=0.55% lat (msec) : 2=3.45%, 4=6.54%, 10=13.61%, 20=34.67%, 50=34.96% lat (msec) : 100=3.71%, 250=0.13%, 750=0.03% cpu : usr=0.10%, sys=19.38%, ctx=8216, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149972: Mon Aug 10 05:37:03 2026 read: IOPS=25, BW=103KiB/s (105kB/s)(6028KiB/58754msec) clat (usec): min=42, max=733977, avg=20483.15, stdev=22685.20 lat (usec): min=43, max=733978, avg=20484.24, stdev=22685.19 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 204], 10.00th=[ 8586], 20.00th=[ 10683], | 30.00th=[ 12780], 40.00th=[ 15008], 50.00th=[ 17433], 60.00th=[ 20317], | 70.00th=[ 23725], 80.00th=[ 28181], 90.00th=[ 35390], 95.00th=[ 41157], | 99.00th=[ 66323], 99.50th=[ 89654], 99.90th=[154141], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 31, max= 174, per=25.67%, avg=102.94, stdev=27.39, samples=115 iops : min= 7, max= 43, avg=25.30, stdev= 6.89, samples=115 write: IOPS=26, BW=107KiB/s (109kB/s)(6260KiB/58754msec); 0 zone resets clat (usec): min=715, max=183899, avg=17727.15, stdev=15794.95 lat (usec): min=715, max=183900, avg=17728.39, stdev=15795.02 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1778], 10.00th=[ 2573], 20.00th=[ 3884], | 30.00th=[ 6390], 40.00th=[ 10552], 50.00th=[ 14484], 60.00th=[ 18482], | 70.00th=[ 22938], 80.00th=[ 29230], 90.00th=[ 36963], 95.00th=[ 43779], | 99.00th=[ 68682], 99.50th=[ 83362], 99.90th=[125305], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 19, max= 184, per=25.20%, avg=105.84, stdev=31.40, samples=116 iops : min= 4, max= 46, avg=26.01, stdev= 7.92, samples=116 lat (usec) : 50=0.29%, 100=1.11%, 250=1.17%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.36% lat (msec) : 2=2.80%, 4=7.19%, 10=14.91%, 20=33.43%, 50=35.48% lat (msec) : 100=2.80%, 250=0.29%, 750=0.03% cpu : usr=0.12%, sys=19.41%, ctx=8483, 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=149973: Mon Aug 10 05:37:03 2026 read: IOPS=25, BW=102KiB/s (104kB/s)(6052KiB/59371msec) clat (usec): min=22, max=106812, avg=19936.49, stdev=13339.65 lat (usec): min=22, max=106813, avg=19937.56, stdev=13339.73 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 139], 10.00th=[ 7898], 20.00th=[ 10683], | 30.00th=[ 12649], 40.00th=[ 14746], 50.00th=[ 17171], 60.00th=[ 20055], | 70.00th=[ 23725], 80.00th=[ 28181], 90.00th=[ 35914], 95.00th=[ 43779], | 99.00th=[ 65799], 99.50th=[ 80217], 99.90th=[106431], 99.95th=[106431], | 99.99th=[106431] bw ( KiB/s): min= 15, max= 232, per=25.61%, avg=102.70, stdev=29.45, samples=117 iops : min= 3, max= 58, avg=25.23, stdev= 7.40, samples=117 write: IOPS=26, BW=105KiB/s (108kB/s)(6236KiB/59371msec); 0 zone resets clat (usec): min=729, max=828214, avg=18635.20, stdev=26228.81 lat (usec): min=729, max=828216, avg=18636.55, stdev=26228.82 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1696], 10.00th=[ 2540], 20.00th=[ 3851], | 30.00th=[ 6259], 40.00th=[ 10552], 50.00th=[ 14615], 60.00th=[ 18482], | 70.00th=[ 23200], 80.00th=[ 29230], 90.00th=[ 39060], 95.00th=[ 48497], | 99.00th=[ 76022], 99.50th=[ 86508], 99.90th=[154141], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 31, max= 224, per=25.17%, avg=105.70, stdev=31.27, samples=117 iops : min= 7, max= 56, avg=25.98, stdev= 7.84, samples=117 lat (usec) : 50=0.33%, 100=1.50%, 250=1.14%, 500=0.20%, 750=0.07% lat (usec) : 1000=0.29% lat (msec) : 2=3.26%, 4=7.19%, 10=13.96%, 20=33.85%, 50=34.47% lat (msec) : 100=3.48%, 250=0.23%, 1000=0.03% cpu : usr=0.12%, sys=19.23%, ctx=8313, 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=401KiB/s (411kB/s), 99.3KiB/s-103KiB/s (102kB/s-105kB/s), io=23.4MiB (24.6MB), run=58429-59818msec WRITE: bw=420KiB/s (430kB/s), 105KiB/s-108KiB/s (108kB/s-110kB/s), io=24.6MiB (25.7MB), run=58429-59818msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149965: Mon Aug 10 05:37:35 2026 read: IOPS=16, BW=65.8KiB/s (67.4kB/s)(5992KiB/91084msec) clat (msec): min=3, max=699, avg=16.09, stdev=24.06 lat (msec): min=3, max=699, avg=16.10, stdev=24.06 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 9], 60.00th=[ 12], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 36], 95.00th=[ 48], | 99.00th=[ 86], 99.50th=[ 96], 99.90th=[ 176], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 232, per=25.05%, avg=65.87, stdev=43.22, samples=180 iops : min= 1, max= 58, avg=16.12, stdev=10.90, samples=180 write: IOPS=17, BW=69.1KiB/s (70.8kB/s)(6296KiB/91084msec); 0 zone resets clat (msec): min=13, max=181, avg=42.41, stdev=23.79 lat (msec): min=13, max=181, avg=42.41, stdev=23.79 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 50], 80.00th=[ 62], 90.00th=[ 74], 95.00th=[ 87], | 99.00th=[ 126], 99.50th=[ 144], 99.90th=[ 180], 99.95th=[ 182], | 99.99th=[ 182] bw ( KiB/s): min= 8, max= 168, per=25.15%, avg=69.17, stdev=37.52, samples=180 iops : min= 2, max= 42, avg=16.94, stdev= 9.47, samples=180 lat (msec) : 4=1.07%, 10=25.85%, 20=14.13%, 50=41.96%, 100=15.43% lat (msec) : 250=1.53%, 750=0.03% cpu : usr=0.08%, sys=6.58%, ctx=5721, 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=149966: Mon Aug 10 05:37:35 2026 read: IOPS=16, BW=65.1KiB/s (66.6kB/s)(5940KiB/91284msec) clat (msec): min=2, max=735, avg=15.49, stdev=24.57 lat (msec): min=2, max=735, avg=15.49, stdev=24.57 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 7], 50.00th=[ 9], 60.00th=[ 11], | 70.00th=[ 16], 80.00th=[ 23], 90.00th=[ 35], 95.00th=[ 45], | 99.00th=[ 81], 99.50th=[ 107], 99.90th=[ 146], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 208, per=24.74%, avg=65.08, stdev=44.12, samples=180 iops : min= 1, max= 52, avg=15.92, stdev=11.13, samples=180 write: IOPS=17, BW=69.5KiB/s (71.2kB/s)(6348KiB/91284msec); 0 zone resets clat (msec): min=14, max=203, avg=42.89, stdev=24.22 lat (msec): min=14, max=203, avg=42.89, stdev=24.22 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 51], 80.00th=[ 62], 90.00th=[ 77], 95.00th=[ 90], | 99.00th=[ 117], 99.50th=[ 136], 99.90th=[ 199], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 23, max= 160, per=25.20%, avg=69.30, stdev=37.24, samples=180 iops : min= 5, max= 40, avg=16.97, stdev= 9.39, samples=180 lat (msec) : 4=1.20%, 10=26.66%, 20=13.57%, 50=41.15%, 100=15.66% lat (msec) : 250=1.73%, 750=0.03% cpu : usr=0.10%, sys=6.57%, ctx=5895, 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=149967: Mon Aug 10 05:37:35 2026 read: IOPS=16, BW=66.2KiB/s (67.8kB/s)(6028KiB/91099msec) clat (msec): min=3, max=153, avg=15.86, stdev=16.71 lat (msec): min=3, max=153, avg=15.86, stdev=16.71 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 9], 60.00th=[ 12], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 36], 95.00th=[ 50], | 99.00th=[ 86], 99.50th=[ 109], 99.90th=[ 148], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 8, max= 191, per=25.18%, avg=66.23, stdev=41.22, samples=180 iops : min= 2, max= 47, avg=16.21, stdev=10.35, samples=180 write: IOPS=17, BW=68.7KiB/s (70.4kB/s)(6260KiB/91099msec); 0 zone resets clat (msec): min=14, max=757, avg=42.79, stdev=30.09 lat (msec): min=14, max=757, avg=42.79, stdev=30.09 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 49], 80.00th=[ 61], 90.00th=[ 77], 95.00th=[ 92], | 99.00th=[ 122], 99.50th=[ 144], 99.90th=[ 199], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 15, max= 160, per=24.99%, avg=68.72, stdev=38.10, samples=180 iops : min= 3, max= 40, avg=16.83, stdev= 9.63, samples=180 lat (msec) : 4=1.30%, 10=25.49%, 20=14.45%, 50=41.89%, 100=15.17% lat (msec) : 250=1.66%, 1000=0.03% cpu : usr=0.09%, sys=6.64%, ctx=5676, 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=149968: Mon Aug 10 05:37:35 2026 read: IOPS=16, BW=66.4KiB/s (67.0kB/s)(6052KiB/91167msec) clat (msec): min=3, max=118, avg=15.43, stdev=15.17 lat (msec): min=3, max=118, avg=15.43, stdev=15.17 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 9], 60.00th=[ 12], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 35], 95.00th=[ 46], | 99.00th=[ 74], 99.50th=[ 94], 99.90th=[ 113], 99.95th=[ 118], | 99.99th=[ 118] bw ( KiB/s): min= 7, max= 216, per=25.45%, avg=66.92, stdev=43.93, samples=179 iops : min= 1, max= 54, avg=16.38, stdev=11.07, samples=179 write: IOPS=17, BW=68.4KiB/s (70.0kB/s)(6236KiB/91167msec); 0 zone resets clat (msec): min=15, max=800, avg=43.36, stdev=31.17 lat (msec): min=15, max=800, avg=43.36, stdev=31.17 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 41], | 70.00th=[ 50], 80.00th=[ 63], 90.00th=[ 77], 95.00th=[ 92], | 99.00th=[ 127], 99.50th=[ 144], 99.90th=[ 205], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 15, max= 152, per=24.86%, avg=68.37, stdev=37.23, samples=180 iops : min= 3, max= 38, avg=16.74, stdev= 9.41, samples=180 lat (msec) : 4=1.27%, 10=25.85%, 20=14.32%, 50=41.57%, 100=15.46% lat (msec) : 250=1.50%, 1000=0.03% cpu : usr=0.09%, sys=6.62%, ctx=5701, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=263KiB/s (269kB/s), 65.1KiB/s-66.4KiB/s (66.6kB/s-67.0kB/s), io=23.4MiB (24.6MB), run=91084-91284msec WRITE: bw=275KiB/s (282kB/s), 68.4KiB/s-69.5KiB/s (70.0kB/s-71.2kB/s), io=24.6MiB (25.7MB), run=91084-91284msec 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=150005: Mon Aug 10 05:37:56 2026 read: IOPS=23, BW=375KiB/s (384kB/s)(5920KiB/15783msec) clat (usec): min=45, max=133703, avg=22143.96, stdev=16112.03 lat (usec): min=47, max=133704, avg=22145.01, stdev=16112.04 clat percentiles (usec): | 1.00th=[ 86], 5.00th=[ 131], 10.00th=[ 7177], 20.00th=[ 11600], | 30.00th=[ 14222], 40.00th=[ 16909], 50.00th=[ 19530], 60.00th=[ 22676], | 70.00th=[ 26084], 80.00th=[ 31327], 90.00th=[ 37487], 95.00th=[ 44303], | 99.00th=[ 74974], 99.50th=[130548], 99.90th=[133694], 99.95th=[133694], | 99.99th=[133694] bw ( KiB/s): min= 127, max= 734, per=24.63%, avg=373.65, stdev=119.33, samples=31 iops : min= 7, max= 45, avg=22.74, stdev= 7.46, samples=31 write: IOPS=25, BW=403KiB/s (413kB/s)(6368KiB/15783msec); 0 zone resets clat (usec): min=1181, max=94444, avg=18971.73, stdev=14764.82 lat (usec): min=1182, max=94445, avg=18973.48, stdev=14765.03 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 3458], 10.00th=[ 4293], 20.00th=[ 5800], | 30.00th=[ 8356], 40.00th=[11469], 50.00th=[15926], 60.00th=[19006], | 70.00th=[22938], 80.00th=[29230], 90.00th=[40109], 95.00th=[49021], | 99.00th=[68682], 99.50th=[79168], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 223, max= 702, per=25.18%, avg=401.84, stdev=113.10, samples=31 iops : min= 13, max= 43, avg=24.52, stdev= 7.11, samples=31 lat (usec) : 50=0.13%, 100=0.91%, 250=3.12%, 500=0.13% lat (msec) : 2=0.91%, 4=2.86%, 10=17.32%, 20=31.38%, 50=39.19% lat (msec) : 100=3.65%, 250=0.39% cpu : usr=0.09%, sys=26.69%, ctx=2561, 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=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=150006: Mon Aug 10 05:37:56 2026 read: IOPS=22, BW=365KiB/s (374kB/s)(5744KiB/15739msec) clat (usec): min=53, max=106698, avg=22097.06, stdev=13636.22 lat (usec): min=54, max=106699, avg=22098.25, stdev=13636.20 clat percentiles (usec): | 1.00th=[ 70], 5.00th=[ 131], 10.00th=[ 8717], 20.00th=[ 12518], | 30.00th=[ 14877], 40.00th=[ 17957], 50.00th=[ 20317], 60.00th=[ 23200], | 70.00th=[ 26608], 80.00th=[ 31065], 90.00th=[ 38536], 95.00th=[ 45351], | 99.00th=[ 64750], 99.50th=[ 77071], 99.90th=[106431], 99.95th=[106431], | 99.99th=[106431] bw ( KiB/s): min= 157, max= 608, per=24.19%, avg=366.94, stdev=109.01, samples=31 iops : min= 9, max= 38, avg=22.29, stdev= 6.84, samples=31 write: IOPS=25, BW=416KiB/s (426kB/s)(6544KiB/15739msec); 0 zone resets clat (usec): min=1193, max=89009, avg=18898.49, stdev=14524.79 lat (usec): min=1195, max=89011, avg=18900.42, stdev=14524.87 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 3326], 10.00th=[ 4293], 20.00th=[ 6194], | 30.00th=[ 8717], 40.00th=[11994], 50.00th=[15270], 60.00th=[19792], | 70.00th=[24249], 80.00th=[29230], 90.00th=[37487], 95.00th=[47449], | 99.00th=[66847], 99.50th=[73925], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 190, max= 637, per=26.06%, avg=415.87, stdev=114.66, samples=31 iops : min= 11, max= 39, avg=25.39, stdev= 7.10, samples=31 lat (usec) : 100=1.30%, 250=2.47% lat (msec) : 2=1.17%, 4=3.39%, 10=15.89%, 20=30.86%, 50=41.67% lat (msec) : 100=3.12%, 250=0.13% cpu : usr=0.11%, sys=26.50%, ctx=2520, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150007: Mon Aug 10 05:37:56 2026 read: IOPS=24, BW=398KiB/s (408kB/s)(6256KiB/15707msec) clat (usec): min=68, max=89556, avg=21411.48, stdev=13153.01 lat (usec): min=69, max=89557, avg=21412.51, stdev=13153.06 clat percentiles (usec): | 1.00th=[ 89], 5.00th=[ 120], 10.00th=[ 243], 20.00th=[12256], | 30.00th=[14746], 40.00th=[17171], 50.00th=[19792], 60.00th=[23725], | 70.00th=[27132], 80.00th=[31589], 90.00th=[36963], 95.00th=[42730], | 99.00th=[58983], 99.50th=[78119], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 187, max= 574, per=26.32%, avg=399.26, stdev=97.08, samples=31 iops : min= 11, max= 35, avg=24.32, stdev= 6.01, samples=31 write: IOPS=24, BW=384KiB/s (393kB/s)(6032KiB/15707msec); 0 zone resets clat (usec): min=1236, max=95489, avg=19207.04, stdev=15249.55 lat (usec): min=1238, max=95490, avg=19209.01, stdev=15249.85 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 3261], 10.00th=[ 4555], 20.00th=[ 6325], | 30.00th=[ 8717], 40.00th=[11076], 50.00th=[14091], 60.00th=[19530], | 70.00th=[25035], 80.00th=[30802], 90.00th=[41157], 95.00th=[47973], | 99.00th=[73925], 99.50th=[87557], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 191, max= 606, per=23.95%, avg=382.26, stdev=116.32, samples=31 iops : min= 11, max= 37, avg=23.29, stdev= 7.29, samples=31 lat (usec) : 100=1.69%, 250=3.52%, 500=0.39%, 750=0.13% lat (msec) : 2=0.65%, 4=3.12%, 10=14.71%, 20=32.29%, 50=40.10% lat (msec) : 100=3.39% cpu : usr=0.10%, sys=26.01%, ctx=2476, 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=150008: Mon Aug 10 05:37:56 2026 read: IOPS=24, BW=392KiB/s (402kB/s)(6032KiB/15378msec) clat (usec): min=37, max=121151, avg=21023.89, stdev=16506.71 lat (usec): min=37, max=121152, avg=21025.41, stdev=16506.70 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 95], 10.00th=[ 123], 20.00th=[ 8848], | 30.00th=[ 13304], 40.00th=[ 16581], 50.00th=[ 19006], 60.00th=[ 22152], | 70.00th=[ 26084], 80.00th=[ 30802], 90.00th=[ 41681], 95.00th=[ 50594], | 99.00th=[ 84411], 99.50th=[ 92799], 99.90th=[121111], 99.95th=[121111], | 99.99th=[121111] bw ( KiB/s): min= 191, max= 640, per=25.79%, avg=391.30, stdev=125.38, samples=30 iops : min= 11, max= 40, avg=23.83, stdev= 7.82, samples=30 write: IOPS=25, BW=407KiB/s (417kB/s)(6256KiB/15378msec); 0 zone resets clat (usec): min=1384, max=132486, avg=18747.28, stdev=15645.40 lat (usec): min=1386, max=132488, avg=18749.15, stdev=15645.67 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 24], 80.00th=[ 29], 90.00th=[ 39], 95.00th=[ 49], | 99.00th=[ 67], 99.50th=[ 95], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 191, max= 701, per=25.56%, avg=407.97, stdev=119.39, samples=30 iops : min= 11, max= 43, avg=24.90, stdev= 7.42, samples=30 lat (usec) : 50=0.39%, 100=2.60%, 250=5.21%, 500=0.26% lat (msec) : 2=0.13%, 4=2.60%, 10=18.49%, 20=30.34%, 50=35.29% lat (msec) : 100=4.43%, 250=0.26% cpu : usr=0.14%, sys=26.28%, ctx=2407, 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=1518KiB/s (1554kB/s), 365KiB/s-398KiB/s (374kB/s-408kB/s), io=23.4MiB (24.5MB), run=15378-15783msec WRITE: bw=1597KiB/s (1635kB/s), 384KiB/s-416KiB/s (393kB/s-426kB/s), io=24.6MiB (25.8MB), run=15378-15783msec rand-rw: (groupid=0, jobs=1): err= 0: pid=150000: Mon Aug 10 05:38:05 2026 read: IOPS=15, BW=242KiB/s (248kB/s)(5920KiB/24445msec) clat (msec): min=3, max=107, avg=17.33, stdev=15.54 lat (msec): min=3, max=107, avg=17.33, stdev=15.54 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 40], 95.00th=[ 50], | 99.00th=[ 80], 99.50th=[ 82], 99.90th=[ 108], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 31, max= 640, per=24.44%, avg=238.31, stdev=127.76, samples=48 iops : min= 1, max= 40, avg=14.35, stdev= 8.07, samples=48 write: IOPS=16, BW=261KiB/s (267kB/s)(6368KiB/24445msec); 0 zone resets clat (msec): min=16, max=165, avg=45.16, stdev=22.71 lat (msec): min=16, max=166, avg=45.16, stdev=22.71 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 35], 50.00th=[ 40], 60.00th=[ 45], | 70.00th=[ 51], 80.00th=[ 61], 90.00th=[ 73], 95.00th=[ 89], | 99.00th=[ 136], 99.50th=[ 153], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 94, max= 480, per=25.26%, avg=258.88, stdev=114.37, samples=48 iops : min= 5, max= 30, avg=15.65, stdev= 7.32, samples=48 lat (msec) : 4=0.13%, 10=20.83%, 20=16.15%, 50=44.66%, 100=16.41% lat (msec) : 250=1.82% cpu : usr=0.11%, sys=8.56%, ctx=1676, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150001: Mon Aug 10 05:38:05 2026 read: IOPS=14, BW=234KiB/s (239kB/s)(5744KiB/24566msec) clat (usec): min=3743, max=90920, avg=17078.29, stdev=15426.99 lat (usec): min=3743, max=90921, avg=17079.42, stdev=15426.95 clat percentiles (usec): | 1.00th=[ 4359], 5.00th=[ 5145], 10.00th=[ 5866], 20.00th=[ 6783], | 30.00th=[ 7570], 40.00th=[ 8717], 50.00th=[10159], 60.00th=[13042], | 70.00th=[18220], 80.00th=[23987], 90.00th=[40633], 95.00th=[52691], | 99.00th=[70779], 99.50th=[85459], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 31, max= 704, per=23.79%, avg=231.92, stdev=144.99, samples=48 iops : min= 1, max= 44, avg=13.96, stdev= 9.18, samples=48 write: IOPS=16, BW=266KiB/s (273kB/s)(6544KiB/24566msec); 0 zone resets clat (msec): min=15, max=171, avg=45.00, stdev=24.28 lat (msec): min=15, max=171, avg=45.01, stdev=24.28 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 31], 40.00th=[ 34], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 51], 80.00th=[ 61], 90.00th=[ 79], 95.00th=[ 89], | 99.00th=[ 136], 99.50th=[ 146], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 94, max= 512, per=25.48%, avg=261.21, stdev=113.04, samples=48 iops : min= 5, max= 32, avg=15.79, stdev= 7.23, samples=48 lat (msec) : 4=0.13%, 10=22.40%, 20=13.02%, 50=45.44%, 100=16.93% lat (msec) : 250=2.08% cpu : usr=0.09%, sys=8.24%, ctx=1590, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150002: Mon Aug 10 05:38:05 2026 read: IOPS=16, BW=258KiB/s (265kB/s)(6256KiB/24216msec) clat (msec): min=4, max=141, avg=18.25, stdev=17.91 lat (msec): min=4, max=141, avg=18.25, stdev=17.91 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 14], | 70.00th=[ 19], 80.00th=[ 28], 90.00th=[ 43], 95.00th=[ 56], | 99.00th=[ 87], 99.50th=[ 114], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 32, max= 736, per=26.57%, avg=259.08, stdev=158.48, samples=48 iops : min= 2, max= 46, avg=15.65, stdev=10.11, samples=48 write: IOPS=15, BW=249KiB/s (255kB/s)(6032KiB/24216msec); 0 zone resets clat (msec): min=19, max=171, avg=45.13, stdev=23.04 lat (msec): min=19, max=171, avg=45.13, stdev=23.04 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 25], 20.00th=[ 29], | 30.00th=[ 31], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 44], | 70.00th=[ 50], 80.00th=[ 59], 90.00th=[ 75], 95.00th=[ 93], | 99.00th=[ 138], 99.50th=[ 144], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 95, max= 510, per=24.29%, avg=248.94, stdev=113.24, samples=48 iops : min= 5, max= 31, avg=15.02, stdev= 7.21, samples=48 lat (msec) : 10=24.22%, 20=12.89%, 50=45.57%, 100=15.36%, 250=1.95% cpu : usr=0.06%, sys=8.56%, ctx=1643, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150003: Mon Aug 10 05:38:05 2026 read: IOPS=15, BW=247KiB/s (253kB/s)(6032KiB/24417msec) clat (msec): min=4, max=148, avg=19.43, stdev=19.42 lat (msec): min=4, max=148, avg=19.43, stdev=19.42 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 45], 95.00th=[ 59], | 99.00th=[ 97], 99.50th=[ 111], 99.90th=[ 148], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 63, max= 608, per=25.06%, avg=244.31, stdev=129.78, samples=48 iops : min= 3, max= 38, avg=14.73, stdev= 8.27, samples=48 write: IOPS=16, BW=256KiB/s (262kB/s)(6256KiB/24417msec); 0 zone resets clat (msec): min=17, max=153, avg=43.53, stdev=21.13 lat (msec): min=17, max=153, avg=43.53, stdev=21.13 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 23], 10.00th=[ 25], 20.00th=[ 28], | 30.00th=[ 31], 40.00th=[ 33], 50.00th=[ 37], 60.00th=[ 44], | 70.00th=[ 49], 80.00th=[ 56], 90.00th=[ 71], 95.00th=[ 84], | 99.00th=[ 122], 99.50th=[ 142], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 95, max= 512, per=24.84%, avg=254.60, stdev=119.38, samples=48 iops : min= 5, max= 32, avg=15.37, stdev= 7.59, samples=48 lat (msec) : 10=22.14%, 20=11.98%, 50=47.79%, 100=16.28%, 250=1.82% cpu : usr=0.08%, sys=8.49%, ctx=1673, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=975KiB/s (998kB/s), 234KiB/s-258KiB/s (239kB/s-265kB/s), io=23.4MiB (24.5MB), run=24216-24566msec WRITE: bw=1026KiB/s (1050kB/s), 249KiB/s-266KiB/s (255kB/s-273kB/s), io=24.6MiB (25.8MB), run=24216-24566msec 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=150022: Mon Aug 10 05:38:14 2026 read: IOPS=2, BW=2953KiB/s (3024kB/s)(7168KiB/2427msec) clat (usec): min=562, max=222508, avg=103818.37, stdev=82358.66 lat (usec): min=564, max=222510, avg=103819.79, stdev=82358.72 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 644], | 30.00th=[ 78119], 40.00th=[ 78119], 50.00th=[128451], 60.00th=[141558], | 70.00th=[141558], 80.00th=[154141], 90.00th=[223347], 95.00th=[223347], | 99.00th=[223347], 99.50th=[223347], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 2039, max= 5818, per=66.90%, avg=3960.00, stdev=1890.29, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=2, BW=2110KiB/s (2160kB/s)(5120KiB/2427msec); 0 zone resets clat (msec): min=112, max=580, avg=337.30, stdev=209.21 lat (msec): min=112, max=580, avg=337.36, stdev=209.17 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 531], 80.00th=[ 531], 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= 1939, max= 4079, per=32.30%, avg=2676.33, stdev=1215.28, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=16.67% lat (msec) : 100=8.33%, 250=50.00%, 500=8.33%, 750=16.67% cpu : usr=0.00%, sys=43.57%, ctx=486, 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=150023: Mon Aug 10 05:38:14 2026 read: IOPS=0, BW=592KiB/s (606kB/s)(2048KiB/3460msec) clat (usec): min=542, max=234735, avg=117638.76, stdev=165599.21 lat (usec): min=543, max=234737, avg=117640.63, stdev=165599.87 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 545], | 30.00th=[ 545], 40.00th=[ 545], 50.00th=[ 545], 60.00th=[233833], | 70.00th=[233833], 80.00th=[233833], 90.00th=[233833], 95.00th=[233833], | 99.00th=[233833], 99.50th=[233833], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 1356, max= 2035, per=28.65%, avg=1695.50, stdev=480.13, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2960KiB/s (3031kB/s)(10.0MiB/3460msec); 0 zone resets clat (msec): min=60, max=966, avg=311.76, stdev=288.90 lat (msec): min=61, max=966, avg=311.87, stdev=288.92 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 103], | 30.00th=[ 117], 40.00th=[ 133], 50.00th=[ 140], 60.00th=[ 157], | 70.00th=[ 435], 80.00th=[ 468], 90.00th=[ 542], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1961, max= 8143, per=48.90%, avg=4051.50, stdev=2896.02, samples=4 iops : min= 1, max= 7, avg= 3.00, stdev= 2.83, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=36.51%, ctx=227, 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=150026: Mon Aug 10 05:38:14 2026 read: IOPS=2, BW=2302KiB/s (2357kB/s)(6144KiB/2669msec) clat (usec): min=506, max=234495, avg=93877.73, stdev=112376.72 lat (usec): min=507, max=234497, avg=93879.10, stdev=112376.74 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[102237], | 70.00th=[225444], 80.00th=[225444], 90.00th=[233833], 95.00th=[233833], | 99.00th=[233833], 99.50th=[233833], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 1980, max= 3923, per=44.68%, avg=2644.67, stdev=1107.36, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=2, BW=2302KiB/s (2357kB/s)(6144KiB/2669msec); 0 zone resets clat (msec): min=147, max=737, avg=344.67, stdev=225.54 lat (msec): min=147, max=737, avg=344.74, stdev=225.56 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 393], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1961, max= 2708, per=26.95%, avg=2233.33, stdev=412.56, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (usec) : 750=25.00% lat (msec) : 250=50.00%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=38.83%, ctx=322, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150028: Mon Aug 10 05:38:14 2026 read: IOPS=1, BW=2009KiB/s (2057kB/s)(5120KiB/2549msec) clat (usec): min=381, max=447683, avg=132389.61, stdev=198826.49 lat (usec): min=381, max=447685, avg=132390.83, stdev=198826.91 clat percentiles (usec): | 1.00th=[ 383], 5.00th=[ 383], 10.00th=[ 383], 20.00th=[ 383], | 30.00th=[ 408], 40.00th=[ 408], 50.00th=[ 545], 60.00th=[ 545], | 70.00th=[212861], 80.00th=[212861], 90.00th=[446694], 95.00th=[446694], | 99.00th=[446694], 99.50th=[446694], 99.90th=[446694], 99.95th=[446694], | 99.99th=[446694] bw ( KiB/s): min= 1973, max= 6119, per=68.36%, avg=4046.00, stdev=2931.66, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2812KiB/s (2880kB/s)(7168KiB/2549msec); 0 zone resets clat (msec): min=133, max=394, avg=248.58, stdev=95.15 lat (msec): min=133, max=394, avg=248.66, stdev=95.16 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 167], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 264], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 317], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 1921, max= 4023, per=31.85%, avg=2639.00, stdev=1198.86, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 250=33.33%, 500=41.67% cpu : usr=0.00%, sys=45.88%, ctx=173, 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=5919KiB/s (6061kB/s), 592KiB/s-2953KiB/s (606kB/s-3024kB/s), io=20.0MiB (20.0MB), run=2427-3460msec WRITE: bw=8287KiB/s (8486kB/s), 2110KiB/s-2960KiB/s (2160kB/s-3031kB/s), io=28.0MiB (29.4MB), run=2427-3460msec rand-rw: (groupid=0, jobs=1): err= 0: pid=150024: Mon Aug 10 05:38:14 2026 read: IOPS=2, BW=2455KiB/s (2514kB/s)(7168KiB/2920msec) clat (msec): min=53, max=615, avg=188.15, stdev=192.79 lat (msec): min=53, max=615, avg=188.15, stdev=192.79 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 71], | 30.00th=[ 125], 40.00th=[ 125], 50.00th=[ 146], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 159], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2019, max= 3984, per=45.08%, avg=2520.50, stdev=975.74, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1753KiB/s (1796kB/s)(5120KiB/2920msec); 0 zone resets clat (msec): min=121, max=383, avg=292.59, stdev=103.70 lat (msec): min=121, max=383, avg=292.68, stdev=103.69 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 122], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 2019, max= 2048, per=26.02%, avg=2036.67, stdev=15.50, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (msec) : 100=16.67%, 250=41.67%, 500=33.33%, 750=8.33% cpu : usr=0.03%, sys=18.94%, ctx=145, 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=150025: Mon Aug 10 05:38:14 2026 read: IOPS=0, BW=614KiB/s (629kB/s)(2048KiB/3336msec) clat (msec): min=75, max=151, avg=113.94, stdev=53.78 lat (msec): min=75, max=151, avg=113.94, stdev=53.78 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 77], 40.00th=[ 77], 50.00th=[ 77], 60.00th=[ 153], | 70.00th=[ 153], 80.00th=[ 153], 90.00th=[ 153], 95.00th=[ 153], | 99.00th=[ 153], 99.50th=[ 153], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 1969, max= 2043, per=35.88%, avg=2006.00, stdev=52.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=3070KiB/s (3143kB/s)(10.0MiB/3336msec); 0 zone resets clat (msec): min=116, max=571, avg=307.07, stdev=162.76 lat (msec): min=116, max=571, avg=307.17, stdev=162.79 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 125], | 30.00th=[ 130], 40.00th=[ 226], 50.00th=[ 257], 60.00th=[ 347], | 70.00th=[ 368], 80.00th=[ 447], 90.00th=[ 489], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1992, max= 6144, per=52.12%, avg=4079.75, stdev=1695.11, samples=4 iops : min= 1, max= 6, avg= 3.50, stdev= 2.08, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=13.37%, ctx=143, 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=150027: Mon Aug 10 05:38:14 2026 read: IOPS=1, BW=1812KiB/s (1855kB/s)(6144KiB/3391msec) clat (msec): min=58, max=396, avg=169.06, stdev=134.79 lat (msec): min=58, max=396, avg=169.06, stdev=134.79 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 61], | 30.00th=[ 61], 40.00th=[ 89], 50.00th=[ 89], 60.00th=[ 150], | 70.00th=[ 259], 80.00th=[ 259], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 2019, max= 4096, per=48.64%, avg=2719.33, stdev=1192.29, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1812KiB/s (1855kB/s)(6144KiB/3391msec); 0 zone resets clat (msec): min=106, max=806, avg=378.13, stdev=295.35 lat (msec): min=106, max=806, avg=378.22, stdev=295.35 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 115], | 30.00th=[ 115], 40.00th=[ 226], 50.00th=[ 226], 60.00th=[ 347], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1992, max= 2048, per=25.89%, avg=2026.75, stdev=26.90, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=11.45%, ctx=86, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150029: Mon Aug 10 05:38:14 2026 read: IOPS=1, BW=1398KiB/s (1431kB/s)(5120KiB/3663msec) clat (msec): min=30, max=195, avg=92.09, stdev=62.17 lat (msec): min=30, max=195, avg=92.09, stdev=62.17 clat percentiles (msec): | 1.00th=[ 31], 5.00th=[ 31], 10.00th=[ 31], 20.00th=[ 31], | 30.00th=[ 66], 40.00th=[ 66], 50.00th=[ 84], 60.00th=[ 84], | 70.00th=[ 86], 80.00th=[ 86], 90.00th=[ 197], 95.00th=[ 197], | 99.00th=[ 197], 99.50th=[ 197], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 4096, max= 4096, per=73.26%, avg=4096.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1957KiB/s (2004kB/s)(7168KiB/3663msec); 0 zone resets clat (msec): min=57, max=1030, avg=436.95, stdev=386.65 lat (msec): min=57, max=1030, avg=437.02, stdev=386.64 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 62], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 338], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 768], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 2048, max= 2048, per=26.17%, avg=2048.00, stdev= 0.00, samples=4 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=4 lat (msec) : 50=8.33%, 100=41.67%, 250=16.67%, 500=8.33%, 750=8.33% lat (msec) : 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=11.17%, ctx=130, 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=5591KiB/s (5725kB/s), 614KiB/s-2455KiB/s (629kB/s-2514kB/s), io=20.0MiB (20.0MB), run=2920-3663msec WRITE: bw=7827KiB/s (8015kB/s), 1753KiB/s-3070KiB/s (1796kB/s-3143kB/s), io=28.0MiB (29.4MB), run=2920-3663msec 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=150036: Mon Aug 10 05:38:24 2026 read: IOPS=1, BW=4635KiB/s (4746kB/s)(12.0MiB/2651msec) clat (msec): min=488, max=1563, avg=865.98, stdev=604.75 lat (msec): min=488, max=1563, avg=865.99, stdev=604.75 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=33.47%, ctx=2194, 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=150037: Mon Aug 10 05:38:24 2026 read: IOPS=0, BW=1174KiB/s (1202kB/s)(4096KiB/3489msec) clat (nsec): min=1560.0M, max=1560.0M, avg=1560954041.00, stdev= 0.00 lat (nsec): min=1560.0M, max=1560.0M, avg=1560955448.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1569], 5.00th=[ 1569], 10.00th=[ 1569], 20.00th=[ 1569], | 30.00th=[ 1569], 40.00th=[ 1569], 50.00th=[ 1569], 60.00th=[ 1569], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2348KiB/s (2404kB/s)(8192KiB/3489msec); 0 zone resets clat (msec): min=918, max=991, avg=954.94, stdev=51.16 lat (msec): min=919, max=991, avg=955.38, stdev=51.06 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 995], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 8175, max= 8175, per=88.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=8.72%, ctx=1097, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150039: Mon Aug 10 05:38:24 2026 write: IOPS=0, BW=3484KiB/s (3568kB/s)(12.0MiB/3527msec); 0 zone resets clat (msec): min=316, max=2241, avg=1169.73, stdev=980.80 lat (msec): min=317, max=2241, avg=1170.17, stdev=980.71 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 2232], 80.00th=[ 2232], 90.00th=[ 2232], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 8175, max= 8175, per=88.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.06%, sys=11.37%, ctx=85, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150040: Mon Aug 10 05:38:24 2026 write: IOPS=0, BW=3766KiB/s (3856kB/s)(12.0MiB/3263msec); 0 zone resets clat (msec): min=359, max=1676, avg=1076.94, stdev=666.41 lat (msec): min=359, max=1676, avg=1077.22, stdev=666.31 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 8143, max= 8192, per=87.92%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.03%, sys=13.12%, ctx=88, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4696KiB/s (4809kB/s), 1174KiB/s-4635KiB/s (1202kB/s-4746kB/s), io=16.0MiB (16.8MB), run=2651-3489msec WRITE: bw=9291KiB/s (9514kB/s), 2348KiB/s-3766KiB/s (2404kB/s-3856kB/s), io=32.0MiB (33.6MB), run=3263-3527msec rand-rw: (groupid=0, jobs=1): err= 0: pid=150038: Mon Aug 10 05:38:24 2026 read: IOPS=0, BW=3671KiB/s (3759kB/s)(12.0MiB/3347msec) clat (msec): min=594, max=1834, avg=1078.38, stdev=663.16 lat (msec): min=594, max=1834, avg=1078.38, stdev=663.16 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 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= 8015, max= 8094, per=100.00%, avg=8054.50, stdev=55.86, 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=7.47%, ctx=65, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150041: Mon Aug 10 05:38:24 2026 read: IOPS=0, BW=1141KiB/s (1168kB/s)(4096KiB/3590msec) clat (nsec): min=1600.6M, max=1600.6M, avg=1600614672.00, stdev= 0.00 lat (nsec): min=1600.6M, max=1600.6M, avg=1600616887.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1603], 5.00th=[ 1603], 10.00th=[ 1603], 20.00th=[ 1603], | 30.00th=[ 1603], 40.00th=[ 1603], 50.00th=[ 1603], 60.00th=[ 1603], | 70.00th=[ 1603], 80.00th=[ 1603], 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= 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=2282KiB/s (2337kB/s)(8192KiB/3590msec); 0 zone resets clat (msec): min=794, max=1171, avg=983.03, stdev=266.66 lat (msec): min=794, max=1171, avg=983.29, stdev=266.71 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 1167], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8015, max= 8015, per=87.82%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=6.19%, ctx=58, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150042: Mon Aug 10 05:38:24 2026 write: IOPS=0, BW=3911KiB/s (4005kB/s)(12.0MiB/3142msec); 0 zone resets clat (msec): min=526, max=1728, avg=1030.60, stdev=623.78 lat (msec): min=527, max=1728, avg=1030.89, stdev=623.74 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 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= 8094, max= 8175, per=89.13%, avg=8134.50, stdev=57.28, 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=9.42%, ctx=85, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=150043: Mon Aug 10 05:38:24 2026 write: IOPS=1, BW=4404KiB/s (4510kB/s)(12.0MiB/2790msec); 0 zone resets clat (msec): min=270, max=1773, avg=894.43, stdev=783.11 lat (msec): min=270, max=1773, avg=894.83, stdev=783.27 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 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= 8094, max= 8175, per=89.13%, avg=8134.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=10.90%, ctx=71, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4564KiB/s (4673kB/s), 1141KiB/s-3671KiB/s (1168kB/s-3759kB/s), io=16.0MiB (16.8MB), run=3347-3590msec WRITE: bw=9128KiB/s (9347kB/s), 2282KiB/s-4404KiB/s (2337kB/s-4510kB/s), io=32.0MiB (33.6MB), run=2790-3590msec