== sanity test 398b: DIO and buffer IO race ============== 10:39:35 (1786631975) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.30271 s, 9.5 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=145619: Thu Aug 13 10:41:50 2026 read: IOPS=12, BW=51.8KiB/s (53.0kB/s)(5992KiB/115759msec) clat (usec): min=33, max=1076.3k, avg=38348.11, stdev=41016.88 lat (usec): min=33, max=1076.3k, avg=38353.04, stdev=41016.38 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 58], 10.00th=[ 8586], | 20.00th=[ 18482], 30.00th=[ 22938], 40.00th=[ 27395], | 50.00th=[ 31327], 60.00th=[ 36963], 70.00th=[ 43779], | 80.00th=[ 55313], 90.00th=[ 69731], 95.00th=[ 86508], | 99.00th=[ 131597], 99.50th=[ 212861], 99.90th=[ 442500], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 127, per=25.57%, avg=51.40, stdev=20.95, samples=227 iops : min= 1, max= 31, avg=12.19, stdev= 5.28, samples=227 write: IOPS=13, BW=54.4KiB/s (55.7kB/s)(6296KiB/115759msec); 0 zone resets clat (usec): min=896, max=429010, avg=36777.81, stdev=37389.17 lat (usec): min=897, max=429010, avg=36782.25, stdev=37387.07 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1352], 10.00th=[ 1663], 20.00th=[ 4621], | 30.00th=[ 8455], 40.00th=[ 17433], 50.00th=[ 26608], 60.00th=[ 38011], | 70.00th=[ 48497], 80.00th=[ 65274], 90.00th=[ 86508], 95.00th=[108528], | 99.00th=[149947], 99.50th=[179307], 99.90th=[227541], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 7, max= 119, per=25.86%, avg=54.56, stdev=23.10, samples=225 iops : min= 1, max= 29, avg=12.97, stdev= 5.82, samples=225 lat (usec) : 50=0.91%, 100=3.22%, 250=0.23%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=5.73%, 4=3.22%, 10=8.07%, 20=11.62%, 50=40.69% lat (msec) : 100=21.19%, 250=4.65%, 500=0.13%, 2000=0.03% cpu : usr=0.08%, sys=5.52%, ctx=6470, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145620: Thu Aug 13 10:41:50 2026 read: IOPS=12, BW=49.9KiB/s (51.1kB/s)(5940KiB/119074msec) clat (usec): min=29, max=233756, avg=38611.64, stdev=27426.92 lat (usec): min=29, max=233757, avg=38613.10, stdev=27427.01 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 59], 10.00th=[ 11207], 20.00th=[ 18744], | 30.00th=[ 23462], 40.00th=[ 28443], 50.00th=[ 33162], 60.00th=[ 39060], | 70.00th=[ 46924], 80.00th=[ 56361], 90.00th=[ 71828], 95.00th=[ 88605], | 99.00th=[128451], 99.50th=[158335], 99.90th=[206570], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 7, max= 125, per=24.87%, avg=49.98, stdev=22.41, samples=232 iops : min= 1, max= 31, avg=11.83, stdev= 5.65, samples=232 write: IOPS=13, BW=53.3KiB/s (54.6kB/s)(6348KiB/119074msec); 0 zone resets clat (usec): min=767, max=1080.1k, avg=38585.90, stdev=46991.58 lat (usec): min=768, max=1080.1k, avg=38587.42, stdev=46991.65 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1319], 10.00th=[ 1532], | 20.00th=[ 4621], 30.00th=[ 9372], 40.00th=[ 18744], | 50.00th=[ 27132], 60.00th=[ 37487], 70.00th=[ 49021], | 80.00th=[ 64226], 90.00th=[ 88605], 95.00th=[ 115868], | 99.00th=[ 183501], 99.50th=[ 221250], 99.90th=[ 263193], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 128, per=25.18%, avg=53.12, stdev=22.98, samples=233 iops : min= 1, max= 32, avg=12.61, stdev= 5.80, samples=233 lat (usec) : 50=0.65%, 100=3.16%, 250=0.10%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=6.02%, 4=3.45%, 10=6.87%, 20=11.69%, 50=40.10% lat (msec) : 100=22.30%, 250=5.37%, 500=0.03%, 2000=0.03% cpu : usr=0.08%, sys=5.57%, ctx=6552, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145621: Thu Aug 13 10:41:50 2026 read: IOPS=12, BW=50.9KiB/s (52.1kB/s)(6028KiB/118492msec) clat (usec): min=29, max=1082.9k, avg=39238.70, stdev=40573.97 lat (usec): min=29, max=1082.9k, avg=39241.92, stdev=40573.04 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 60], 10.00th=[ 8029], | 20.00th=[ 18482], 30.00th=[ 23200], 40.00th=[ 28443], | 50.00th=[ 33162], 60.00th=[ 39060], 70.00th=[ 44827], | 80.00th=[ 55837], 90.00th=[ 72877], 95.00th=[ 88605], | 99.00th=[ 152044], 99.50th=[ 200279], 99.90th=[ 358613], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 5, max= 118, per=25.29%, avg=50.84, stdev=22.41, samples=231 iops : min= 1, max= 29, avg=12.07, stdev= 5.63, samples=231 write: IOPS=13, BW=52.8KiB/s (54.1kB/s)(6260KiB/118492msec); 0 zone resets clat (usec): min=853, max=438902, avg=37686.52, stdev=39568.20 lat (usec): min=854, max=438903, avg=37692.15, stdev=39566.95 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1336], 10.00th=[ 1516], 20.00th=[ 3982], | 30.00th=[ 8586], 40.00th=[ 18482], 50.00th=[ 28443], 60.00th=[ 38011], | 70.00th=[ 49021], 80.00th=[ 64226], 90.00th=[ 89654], 95.00th=[110625], | 99.00th=[158335], 99.50th=[185598], 99.90th=[387974], 99.95th=[438305], | 99.99th=[438305] bw ( KiB/s): min= 7, max= 111, per=25.02%, avg=52.79, stdev=22.23, samples=231 iops : min= 1, max= 27, avg=12.55, stdev= 5.62, samples=231 lat (usec) : 50=0.55%, 100=3.65%, 250=0.23%, 500=0.10%, 1000=0.07% lat (msec) : 2=6.84%, 4=3.58%, 10=6.67%, 20=10.45%, 50=41.02% lat (msec) : 100=21.81%, 250=4.75%, 500=0.26%, 2000=0.03% cpu : usr=0.08%, sys=5.41%, ctx=6495, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145622: Thu Aug 13 10:41:50 2026 read: IOPS=12, BW=51.5KiB/s (52.7kB/s)(6052KiB/117565msec) clat (usec): min=32, max=1150.0k, avg=38866.26, stdev=40978.61 lat (usec): min=32, max=1150.0k, avg=38868.89, stdev=40978.60 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 59], 10.00th=[ 8225], | 20.00th=[ 17957], 30.00th=[ 22938], 40.00th=[ 27395], | 50.00th=[ 32375], 60.00th=[ 38536], 70.00th=[ 45876], | 80.00th=[ 55837], 90.00th=[ 71828], 95.00th=[ 89654], | 99.00th=[ 135267], 99.50th=[ 175113], 99.90th=[ 367002], | 99.95th=[1149240], 99.99th=[1149240] bw ( KiB/s): min= 7, max= 119, per=25.56%, avg=51.38, stdev=22.50, samples=230 iops : min= 1, max= 29, avg=12.17, stdev= 5.66, samples=230 write: IOPS=13, BW=53.0KiB/s (54.3kB/s)(6236KiB/117565msec); 0 zone resets clat (usec): min=832, max=279806, avg=37431.31, stdev=40090.46 lat (usec): min=833, max=279807, avg=37437.51, stdev=40091.47 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1369], 10.00th=[ 1631], 20.00th=[ 4015], | 30.00th=[ 7898], 40.00th=[ 17957], 50.00th=[ 26346], 60.00th=[ 36439], | 70.00th=[ 47973], 80.00th=[ 63177], 90.00th=[ 87557], 95.00th=[111674], | 99.00th=[187696], 99.50th=[242222], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 125, per=25.05%, avg=52.86, stdev=22.59, samples=230 iops : min= 1, max= 31, avg=12.56, stdev= 5.69, samples=230 lat (usec) : 50=0.88%, 100=3.55%, 250=0.23%, 500=0.03%, 1000=0.20% lat (msec) : 2=6.05%, 4=3.94%, 10=7.10%, 20=11.10%, 50=40.07% lat (msec) : 100=21.91%, 250=4.62%, 500=0.29%, 2000=0.03% cpu : usr=0.09%, sys=5.45%, ctx=6537, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=202KiB/s (206kB/s), 49.9KiB/s-51.8KiB/s (51.1kB/s-53.0kB/s), io=23.4MiB (24.6MB), run=115759-119074msec WRITE: bw=211KiB/s (216kB/s), 52.8KiB/s-54.4KiB/s (54.1kB/s-55.7kB/s), io=24.6MiB (25.7MB), run=115759-119074msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145615: Thu Aug 13 10:44:03 2026 read: IOPS=5, BW=23.8KiB/s (24.4kB/s)(5992KiB/251297msec) clat (msec): min=5, max=1152, avg=32.86, stdev=44.23 lat (msec): min=5, max=1152, avg=32.86, stdev=44.23 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 44], 90.00th=[ 70], 95.00th=[ 96], | 99.00th=[ 176], 99.50th=[ 230], 99.90th=[ 351], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 87, per=27.83%, avg=26.44, stdev=17.74, samples=439 iops : min= 1, max= 21, avg= 6.00, stdev= 4.47, samples=439 write: IOPS=6, BW=25.1KiB/s (25.7kB/s)(6296KiB/251297msec); 0 zone resets clat (msec): min=39, max=570, avg=128.11, stdev=60.89 lat (msec): min=39, max=570, avg=128.12, stdev=60.90 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 67], 20.00th=[ 79], | 30.00th=[ 91], 40.00th=[ 103], 50.00th=[ 116], 60.00th=[ 129], | 70.00th=[ 146], 80.00th=[ 167], 90.00th=[ 205], 95.00th=[ 253], | 99.00th=[ 317], 99.50th=[ 363], 99.90th=[ 481], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 64, per=25.17%, avg=24.92, stdev=11.18, samples=488 iops : min= 1, max= 16, avg= 5.62, stdev= 2.88, samples=488 lat (msec) : 10=4.56%, 20=18.95%, 50=18.13%, 100=24.64%, 250=30.76% lat (msec) : 500=2.90%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.39%, ctx=5231, 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=145616: Thu Aug 13 10:44:03 2026 read: IOPS=5, BW=23.6KiB/s (24.2kB/s)(5940KiB/251535msec) clat (msec): min=4, max=1195, avg=33.14, stdev=45.35 lat (msec): min=4, max=1195, avg=33.14, stdev=45.35 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 43], 90.00th=[ 71], 95.00th=[ 94], | 99.00th=[ 167], 99.50th=[ 218], 99.90th=[ 338], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 87, per=27.60%, avg=26.22, stdev=17.46, samples=438 iops : min= 1, max= 21, avg= 5.95, stdev= 4.43, samples=438 write: IOPS=6, BW=25.2KiB/s (25.8kB/s)(6348KiB/251535msec); 0 zone resets clat (msec): min=25, max=616, avg=127.22, stdev=59.92 lat (msec): min=25, max=616, avg=127.22, stdev=59.92 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 79], | 30.00th=[ 91], 40.00th=[ 102], 50.00th=[ 113], 60.00th=[ 129], | 70.00th=[ 146], 80.00th=[ 169], 90.00th=[ 205], 95.00th=[ 251], | 99.00th=[ 321], 99.50th=[ 342], 99.90th=[ 405], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 7, max= 64, per=25.13%, avg=24.88, stdev=11.37, samples=492 iops : min= 1, max= 16, avg= 5.61, stdev= 2.93, samples=492 lat (msec) : 10=4.20%, 20=18.16%, 50=19.21%, 100=24.90%, 250=30.73% lat (msec) : 500=2.73%, 750=0.03%, 2000=0.03% cpu : usr=0.03%, sys=1.38%, ctx=5265, 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=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=145617: Thu Aug 13 10:44:03 2026 read: IOPS=5, BW=23.0KiB/s (24.5kB/s)(6028KiB/251465msec) clat (msec): min=4, max=333, avg=32.66, stdev=33.12 lat (msec): min=4, max=333, avg=32.66, stdev=33.12 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 45], 90.00th=[ 71], 95.00th=[ 97], | 99.00th=[ 155], 99.50th=[ 211], 99.90th=[ 330], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 104, per=27.33%, avg=25.96, stdev=18.08, samples=449 iops : min= 1, max= 26, avg= 5.89, stdev= 4.56, samples=449 write: IOPS=6, BW=24.9KiB/s (25.5kB/s)(6260KiB/251465msec); 0 zone resets clat (msec): min=28, max=1281, avg=128.95, stdev=67.55 lat (msec): min=28, max=1281, avg=128.96, stdev=67.55 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 58], 10.00th=[ 67], 20.00th=[ 81], | 30.00th=[ 90], 40.00th=[ 103], 50.00th=[ 115], 60.00th=[ 129], | 70.00th=[ 146], 80.00th=[ 169], 90.00th=[ 209], 95.00th=[ 243], | 99.00th=[ 326], 99.50th=[ 372], 99.90th=[ 567], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7, max= 56, per=24.88%, avg=24.63, stdev=11.18, samples=490 iops : min= 1, max= 14, avg= 5.54, stdev= 2.89, samples=490 lat (msec) : 10=4.46%, 20=18.42%, 50=18.82%, 100=24.77%, 250=31.12% lat (msec) : 500=2.31%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.38%, ctx=5205, 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=145618: Thu Aug 13 10:44:03 2026 read: IOPS=6, BW=24.2KiB/s (24.8kB/s)(6052KiB/250127msec) clat (msec): min=4, max=362, avg=33.06, stdev=34.46 lat (msec): min=4, max=362, avg=33.07, stdev=34.46 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 46], 90.00th=[ 74], 95.00th=[ 100], | 99.00th=[ 155], 99.50th=[ 230], 99.90th=[ 334], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 120, per=27.67%, avg=26.28, stdev=18.77, samples=446 iops : min= 1, max= 30, avg= 5.95, stdev= 4.74, samples=446 write: IOPS=6, BW=24.9KiB/s (25.5kB/s)(6236KiB/250127msec); 0 zone resets clat (msec): min=33, max=1296, avg=128.09, stdev=66.80 lat (msec): min=33, max=1296, avg=128.09, stdev=66.80 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 81], | 30.00th=[ 91], 40.00th=[ 103], 50.00th=[ 114], 60.00th=[ 126], | 70.00th=[ 144], 80.00th=[ 167], 90.00th=[ 209], 95.00th=[ 247], | 99.00th=[ 321], 99.50th=[ 376], 99.90th=[ 510], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 64, per=24.74%, avg=24.49, stdev=11.55, samples=492 iops : min= 1, max= 16, avg= 5.51, stdev= 2.96, samples=492 lat (msec) : 10=4.65%, 20=19.14%, 50=17.74%, 100=24.45%, 250=31.61% lat (msec) : 500=2.34%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.37%, ctx=5223, 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=95.5KiB/s (97.8kB/s), 23.6KiB/s-24.2KiB/s (24.2kB/s-24.8kB/s), io=23.4MiB (24.6MB), run=250127-251535msec WRITE: bw=99.9KiB/s (102kB/s), 24.9KiB/s-25.2KiB/s (25.5kB/s-25.8kB/s), io=24.6MiB (25.7MB), run=250127-251535msec 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=145678: Thu Aug 13 10:44:44 2026 read: IOPS=12, BW=199KiB/s (204kB/s)(5920KiB/29753msec) clat (usec): min=38, max=253026, avg=42578.15, stdev=33634.83 lat (usec): min=38, max=253027, avg=42579.43, stdev=33634.66 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 59], 10.00th=[ 67], 20.00th=[ 190], | 30.00th=[ 24511], 40.00th=[ 32900], 50.00th=[ 39584], 60.00th=[ 49021], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[149947], 99.50th=[177210], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 63, max= 510, per=25.72%, avg=201.63, stdev=76.96, samples=57 iops : min= 3, max= 31, avg=11.86, stdev= 4.87, samples=57 write: IOPS=13, BW=214KiB/s (219kB/s)(6368KiB/29753msec); 0 zone resets clat (usec): min=1581, max=286873, avg=35019.52, stdev=41676.29 lat (usec): min=1582, max=286875, avg=35021.78, stdev=41676.26 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 1958], 10.00th=[ 2769], 20.00th=[ 5211], | 30.00th=[ 7570], 40.00th=[ 10945], 50.00th=[ 19268], 60.00th=[ 28967], | 70.00th=[ 41681], 80.00th=[ 57410], 90.00th=[ 87557], 95.00th=[121111], | 99.00th=[196084], 99.50th=[221250], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 61, max= 378, per=25.89%, avg=213.60, stdev=68.80, samples=58 iops : min= 3, max= 23, avg=12.64, stdev= 4.32, samples=58 lat (usec) : 50=1.43%, 100=7.55%, 250=0.78%, 500=0.13%, 1000=0.13% lat (msec) : 2=3.12%, 4=4.56%, 10=11.59%, 20=8.85%, 50=30.99% lat (msec) : 100=24.48%, 250=6.12%, 500=0.26% cpu : usr=0.09%, sys=5.99%, ctx=1443, 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=145679: Thu Aug 13 10:44:44 2026 read: IOPS=11, BW=191KiB/s (196kB/s)(5744KiB/30026msec) clat (usec): min=34, max=159941, avg=42623.84, stdev=32320.48 lat (usec): min=34, max=159942, avg=42625.07, stdev=32320.49 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 61], 10.00th=[ 67], 20.00th=[ 1205], | 30.00th=[ 26346], 40.00th=[ 33162], 50.00th=[ 39060], 60.00th=[ 46400], | 70.00th=[ 54789], 80.00th=[ 67634], 90.00th=[ 90702], 95.00th=[101188], | 99.00th=[129500], 99.50th=[152044], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 62, max= 382, per=24.39%, avg=191.24, stdev=74.34, samples=59 iops : min= 3, max= 23, avg=11.22, stdev= 4.75, samples=59 write: IOPS=13, BW=218KiB/s (223kB/s)(6544KiB/30026msec); 0 zone resets clat (usec): min=1534, max=363586, avg=35898.76, stdev=41362.84 lat (usec): min=1535, max=363589, avg=35901.41, stdev=41362.51 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 1926], 10.00th=[ 2802], 20.00th=[ 5604], | 30.00th=[ 9372], 40.00th=[ 13304], 50.00th=[ 21103], 60.00th=[ 28967], | 70.00th=[ 41157], 80.00th=[ 64750], 90.00th=[ 96994], 95.00th=[114820], | 99.00th=[183501], 99.50th=[200279], 99.90th=[362808], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 63, max= 512, per=26.34%, avg=217.29, stdev=96.69, samples=59 iops : min= 3, max= 32, avg=12.86, stdev= 6.12, samples=59 lat (usec) : 50=0.91%, 100=7.03%, 250=0.52%, 500=0.39%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=3.52%, 4=4.17%, 10=9.11%, 20=9.90%, 50=33.33% lat (msec) : 100=23.31%, 250=7.29%, 500=0.13% cpu : usr=0.08%, sys=6.02%, ctx=1432, 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=145680: Thu Aug 13 10:44:44 2026 read: IOPS=13, BW=211KiB/s (217kB/s)(6256KiB/29584msec) clat (usec): min=38, max=290716, avg=39771.55, stdev=35635.53 lat (usec): min=38, max=290716, avg=39772.76, stdev=35635.48 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 58], 10.00th=[ 67], 20.00th=[ 578], | 30.00th=[ 22938], 40.00th=[ 29492], 50.00th=[ 36963], 60.00th=[ 44303], | 70.00th=[ 50594], 80.00th=[ 58983], 90.00th=[ 76022], 95.00th=[ 95945], | 99.00th=[177210], 99.50th=[250610], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 58, max= 412, per=26.99%, avg=211.64, stdev=92.15, samples=58 iops : min= 3, max= 25, avg=12.52, stdev= 5.80, samples=58 write: IOPS=12, BW=204KiB/s (209kB/s)(6032KiB/29584msec); 0 zone resets clat (usec): min=1349, max=391082, avg=37066.12, stdev=42727.85 lat (usec): min=1351, max=391085, avg=37068.33, stdev=42727.89 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1876], 10.00th=[ 2704], 20.00th=[ 6063], | 30.00th=[ 8848], 40.00th=[ 14091], 50.00th=[ 23725], 60.00th=[ 33817], | 70.00th=[ 44827], 80.00th=[ 63177], 90.00th=[ 89654], 95.00th=[112722], | 99.00th=[229639], 99.50th=[270533], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 31, max= 476, per=24.53%, avg=202.38, stdev=95.55, samples=58 iops : min= 1, max= 29, avg=11.93, stdev= 6.02, samples=58 lat (usec) : 50=1.17%, 100=7.68%, 250=1.17%, 500=0.13%, 750=0.26% lat (msec) : 2=3.52%, 4=3.91%, 10=9.24%, 20=9.11%, 50=34.38% lat (msec) : 100=23.57%, 250=5.34%, 500=0.52% cpu : usr=0.09%, sys=5.67%, ctx=1396, 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=145681: Thu Aug 13 10:44:44 2026 read: IOPS=12, BW=198KiB/s (202kB/s)(6032KiB/30520msec) clat (usec): min=31, max=371566, avg=43834.87, stdev=41790.79 lat (usec): min=31, max=371566, avg=43836.16, stdev=41790.91 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 60], 10.00th=[ 66], 20.00th=[ 400], | 30.00th=[ 24511], 40.00th=[ 32375], 50.00th=[ 38536], 60.00th=[ 47449], | 70.00th=[ 55313], 80.00th=[ 64226], 90.00th=[ 85459], 95.00th=[ 99091], | 99.00th=[210764], 99.50th=[291505], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 31, max= 416, per=25.19%, avg=197.47, stdev=87.40, samples=60 iops : min= 1, max= 26, avg=11.62, stdev= 5.52, samples=60 write: IOPS=12, BW=205KiB/s (210kB/s)(6256KiB/30520msec); 0 zone resets clat (usec): min=1589, max=300023, avg=35695.66, stdev=38740.07 lat (usec): min=1591, max=300027, avg=35701.19, stdev=38741.72 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1893], 10.00th=[ 2114], 20.00th=[ 4359], | 30.00th=[ 8717], 40.00th=[ 13960], 50.00th=[ 22676], 60.00th=[ 32375], | 70.00th=[ 45876], 80.00th=[ 64226], 90.00th=[ 87557], 95.00th=[106431], | 99.00th=[177210], 99.50th=[204473], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 61, max= 378, per=24.88%, avg=205.23, stdev=84.62, samples=60 iops : min= 3, max= 23, avg=12.10, stdev= 5.40, samples=60 lat (usec) : 50=0.91%, 100=8.07%, 250=0.65%, 500=0.26%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=4.04%, 4=5.60%, 10=7.68%, 20=8.98%, 50=32.16% lat (msec) : 100=25.78%, 250=4.95%, 500=0.52% cpu : usr=0.08%, sys=5.55%, ctx=1452, 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=785KiB/s (804kB/s), 191KiB/s-211KiB/s (196kB/s-217kB/s), io=23.4MiB (24.5MB), run=29584-30520msec WRITE: bw=826KiB/s (846kB/s), 204KiB/s-218KiB/s (209kB/s-223kB/s), io=24.6MiB (25.8MB), run=29584-30520msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145673: Thu Aug 13 10:45:19 2026 read: IOPS=5, BW=90.7KiB/s (92.8kB/s)(5920KiB/65303msec) clat (msec): min=5, max=460, avg=38.34, stdev=45.79 lat (msec): min=5, max=460, avg=38.35, stdev=45.79 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 44], 90.00th=[ 78], 95.00th=[ 121], | 99.00th=[ 220], 99.50th=[ 321], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 31, max= 351, per=27.17%, avg=98.89, stdev=61.73, samples=116 iops : min= 1, max= 21, avg= 5.44, stdev= 3.90, samples=116 write: IOPS=6, BW=97.5KiB/s (99.9kB/s)(6368KiB/65303msec); 0 zone resets clat (msec): min=32, max=515, avg=127.95, stdev=68.31 lat (msec): min=32, max=515, avg=127.97, stdev=68.31 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 66], 20.00th=[ 79], | 30.00th=[ 90], 40.00th=[ 99], 50.00th=[ 110], 60.00th=[ 122], | 70.00th=[ 136], 80.00th=[ 167], 90.00th=[ 218], 95.00th=[ 266], | 99.00th=[ 388], 99.50th=[ 489], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 30, max= 192, per=25.73%, avg=98.55, stdev=47.30, samples=126 iops : min= 1, max= 12, avg= 5.40, stdev= 3.06, samples=126 lat (msec) : 10=2.86%, 20=14.71%, 50=22.92%, 100=25.91%, 250=29.82% lat (msec) : 500=3.65%, 750=0.13% cpu : usr=0.02%, sys=1.45%, ctx=1326, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145674: Thu Aug 13 10:45:19 2026 read: IOPS=5, BW=87.3KiB/s (89.4kB/s)(5744KiB/65790msec) clat (msec): min=6, max=435, avg=35.30, stdev=41.69 lat (msec): min=6, max=435, avg=35.31, stdev=41.69 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 47], 90.00th=[ 85], 95.00th=[ 108], | 99.00th=[ 194], 99.50th=[ 284], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 22, max= 416, per=28.70%, avg=104.49, stdev=73.68, samples=107 iops : min= 1, max= 26, avg= 5.78, stdev= 4.68, samples=107 write: IOPS=6, BW=99.5KiB/s (102kB/s)(6544KiB/65790msec); 0 zone resets clat (msec): min=34, max=495, avg=129.66, stdev=68.62 lat (msec): min=34, max=495, avg=129.66, stdev=68.62 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 54], 10.00th=[ 67], 20.00th=[ 78], | 30.00th=[ 88], 40.00th=[ 101], 50.00th=[ 115], 60.00th=[ 128], | 70.00th=[ 146], 80.00th=[ 171], 90.00th=[ 218], 95.00th=[ 271], | 99.00th=[ 380], 99.50th=[ 393], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 30, max= 251, per=25.67%, avg=98.33, stdev=46.91, samples=129 iops : min= 1, max= 15, avg= 5.40, stdev= 3.02, samples=129 lat (msec) : 10=3.52%, 20=18.88%, 50=17.58%, 100=25.13%, 250=31.38% lat (msec) : 500=3.52% cpu : usr=0.03%, sys=1.45%, ctx=1335, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145675: Thu Aug 13 10:45:19 2026 read: IOPS=6, BW=96.9KiB/s (99.2kB/s)(6256KiB/64564msec) clat (msec): min=5, max=358, avg=37.51, stdev=47.37 lat (msec): min=5, max=358, avg=37.51, stdev=47.37 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 46], 90.00th=[ 78], 95.00th=[ 133], | 99.00th=[ 296], 99.50th=[ 326], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 22, max= 479, per=28.98%, avg=105.50, stdev=81.29, samples=117 iops : min= 1, max= 29, avg= 5.85, stdev= 5.13, samples=117 write: IOPS=5, BW=93.4KiB/s (95.7kB/s)(6032KiB/64564msec); 0 zone resets clat (msec): min=28, max=452, avg=131.70, stdev=64.97 lat (msec): min=28, max=452, avg=131.70, stdev=64.97 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 65], 10.00th=[ 71], 20.00th=[ 82], | 30.00th=[ 91], 40.00th=[ 101], 50.00th=[ 114], 60.00th=[ 131], | 70.00th=[ 146], 80.00th=[ 174], 90.00th=[ 226], 95.00th=[ 266], | 99.00th=[ 355], 99.50th=[ 388], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 29, max= 224, per=24.93%, avg=95.50, stdev=42.72, samples=124 iops : min= 1, max= 14, avg= 5.21, stdev= 2.80, samples=124 lat (msec) : 10=4.69%, 20=17.58%, 50=20.96%, 100=23.70%, 250=29.82% lat (msec) : 500=3.26% cpu : usr=0.04%, sys=1.51%, ctx=1374, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145676: Thu Aug 13 10:45:19 2026 read: IOPS=5, BW=92.6KiB/s (94.8kB/s)(6032KiB/65138msec) clat (msec): min=6, max=518, avg=36.60, stdev=43.67 lat (msec): min=6, max=518, avg=36.61, stdev=43.67 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 45], 90.00th=[ 80], 95.00th=[ 110], | 99.00th=[ 186], 99.50th=[ 296], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 31, max= 352, per=29.19%, avg=106.24, stdev=69.54, samples=111 iops : min= 1, max= 22, avg= 5.90, stdev= 4.43, samples=111 write: IOPS=6, BW=96.0KiB/s (98.3kB/s)(6256KiB/65138msec); 0 zone resets clat (msec): min=31, max=446, avg=130.58, stdev=68.60 lat (msec): min=31, max=446, avg=130.59, stdev=68.60 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 66], 20.00th=[ 78], | 30.00th=[ 92], 40.00th=[ 103], 50.00th=[ 112], 60.00th=[ 124], | 70.00th=[ 140], 80.00th=[ 171], 90.00th=[ 228], 95.00th=[ 288], | 99.00th=[ 359], 99.50th=[ 388], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 29, max= 255, per=24.98%, avg=95.69, stdev=49.52, samples=128 iops : min= 1, max= 15, avg= 5.23, stdev= 3.17, samples=128 lat (msec) : 10=2.21%, 20=18.23%, 50=21.22%, 100=23.57%, 250=30.73% lat (msec) : 500=3.91%, 750=0.13% cpu : usr=0.05%, sys=1.42%, ctx=1331, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=364KiB/s (373kB/s), 87.3KiB/s-96.9KiB/s (89.4kB/s-99.2kB/s), io=23.4MiB (24.5MB), run=64564-65790msec WRITE: bw=383KiB/s (392kB/s), 93.4KiB/s-99.5KiB/s (95.7kB/s-102kB/s), io=24.6MiB (25.8MB), run=64564-65790msec 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=145699: Thu Aug 13 10:45:35 2026 read: IOPS=1, BW=1445KiB/s (1479kB/s)(7168KiB/4962msec) clat (msec): min=62, max=1635, avg=456.42, stdev=576.34 lat (msec): min=62, max=1635, avg=456.42, stdev=576.34 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 99], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 113], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 743], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 1969, max= 4000, per=92.78%, avg=3263.00, stdev=1124.25, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1032KiB/s (1057kB/s)(5120KiB/4962msec); 0 zone resets clat (msec): min=163, max=428, avg=271.38, stdev=106.20 lat (msec): min=163, max=429, avg=271.46, stdev=106.19 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 264], 60.00th=[ 264], | 70.00th=[ 313], 80.00th=[ 313], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 1910, max= 2043, per=40.54%, avg=1996.00, stdev=74.59, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.92%, ctx=56, 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=145700: Thu Aug 13 10:45:35 2026 read: IOPS=0, BW=352KiB/s (360kB/s)(2048KiB/5823msec) clat (msec): min=133, max=557, avg=345.61, stdev=300.01 lat (msec): min=133, max=557, avg=345.62, stdev=300.01 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 134], | 30.00th=[ 134], 40.00th=[ 134], 50.00th=[ 134], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1969, max= 2035, per=56.92%, avg=2002.00, stdev=46.67, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1759KiB/s (1801kB/s)(10.0MiB/5823msec); 0 zone resets clat (msec): min=179, max=1014, avg=465.96, stdev=272.12 lat (msec): min=179, max=1015, avg=466.19, stdev=272.40 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 236], | 30.00th=[ 264], 40.00th=[ 279], 50.00th=[ 296], 60.00th=[ 477], | 70.00th=[ 518], 80.00th=[ 625], 90.00th=[ 776], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1535, max= 4031, per=45.04%, avg=2217.29, stdev=819.32, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=25.00%, 500=33.33%, 750=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.13%, ctx=146, 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=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=145701: Thu Aug 13 10:45:35 2026 read: IOPS=1, BW=1328KiB/s (1359kB/s)(6144KiB/4628msec) clat (msec): min=90, max=389, avg=214.86, stdev=123.77 lat (msec): min=90, max=389, avg=214.87, stdev=123.78 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 111], | 30.00th=[ 111], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 192], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 1910, max= 3070, per=64.39%, avg=2264.50, stdev=540.44, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 write: IOPS=1, BW=1328KiB/s (1359kB/s)(6144KiB/4628msec); 0 zone resets clat (msec): min=317, max=1029, avg=551.57, stdev=291.46 lat (msec): min=317, max=1029, avg=551.69, stdev=291.44 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 414], 50.00th=[ 414], 60.00th=[ 426], | 70.00th=[ 793], 80.00th=[ 793], 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= 1528, max= 2035, per=36.84%, avg=1813.40, stdev=258.41, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.79%, ctx=60, 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=145704: Thu Aug 13 10:45:35 2026 read: IOPS=0, BW=967KiB/s (990kB/s)(5120KiB/5297msec) clat (msec): min=98, max=515, avg=243.98, stdev=164.99 lat (msec): min=98, max=515, avg=243.98, stdev=164.99 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 100], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 224], 60.00th=[ 224], | 70.00th=[ 253], 80.00th=[ 253], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 1910, max= 4071, per=76.05%, avg=2674.67, stdev=1211.09, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1353KiB/s (1386kB/s)(7168KiB/5297msec); 0 zone resets clat (msec): min=196, max=942, avg=533.98, stdev=287.30 lat (msec): min=196, max=942, avg=534.09, stdev=287.29 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 271], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 535], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 827], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1535, max= 4071, per=45.26%, avg=2228.20, stdev=1054.15, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=25.00%, 1000=16.67% cpu : usr=0.00%, sys=2.93%, ctx=95, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3517KiB/s (3601kB/s), 352KiB/s-1445KiB/s (360kB/s-1479kB/s), io=20.0MiB (20.0MB), run=4628-5823msec WRITE: bw=4924KiB/s (5042kB/s), 1032KiB/s-1759KiB/s (1057kB/s-1801kB/s), io=28.0MiB (29.4MB), run=4628-5823msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145702: Thu Aug 13 10:45:35 2026 read: IOPS=1, BW=2024KiB/s (2073kB/s)(7168KiB/3541msec) clat (usec): min=429, max=310765, avg=198886.16, stdev=96192.82 lat (usec): min=430, max=310768, avg=198887.49, stdev=96193.08 clat percentiles (usec): | 1.00th=[ 429], 5.00th=[ 429], 10.00th=[ 429], 20.00th=[196084], | 30.00th=[206570], 40.00th=[206570], 50.00th=[210764], 60.00th=[212861], | 70.00th=[212861], 80.00th=[254804], 90.00th=[312476], 95.00th=[312476], | 99.00th=[312476], 99.50th=[312476], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 2015, max= 2805, per=63.44%, avg=2181.20, stdev=348.97, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 write: IOPS=1, BW=1446KiB/s (1481kB/s)(5120KiB/3541msec); 0 zone resets clat (msec): min=145, max=502, avg=351.30, stdev=150.44 lat (msec): min=145, max=502, avg=351.45, stdev=150.45 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 498], 80.00th=[ 498], 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= 2007, max= 2048, per=42.02%, avg=2022.25, stdev=17.88, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=8.98%, ctx=237, 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=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=145703: Thu Aug 13 10:45:35 2026 read: IOPS=0, BW=344KiB/s (352kB/s)(2048KiB/5956msec) clat (usec): min=470, max=634093, avg=317281.68, stdev=448039.18 lat (usec): min=470, max=634095, avg=317283.35, stdev=448040.43 clat percentiles (usec): | 1.00th=[ 469], 5.00th=[ 469], 10.00th=[ 469], 20.00th=[ 469], | 30.00th=[ 469], 40.00th=[ 469], 50.00th=[ 469], 60.00th=[633340], | 70.00th=[633340], 80.00th=[633340], 90.00th=[633340], 95.00th=[633340], | 99.00th=[633340], 99.50th=[633340], 99.90th=[633340], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 2015, max= 2031, per=58.84%, avg=2023.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1719KiB/s (1761kB/s)(10.0MiB/5956msec); 0 zone resets clat (msec): min=104, max=792, avg=477.44, stdev=241.37 lat (msec): min=104, max=793, avg=477.54, stdev=241.35 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 247], | 30.00th=[ 313], 40.00th=[ 317], 50.00th=[ 405], 60.00th=[ 506], | 70.00th=[ 567], 80.00th=[ 760], 90.00th=[ 768], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 2007, max= 6107, per=54.18%, avg=2607.57, stdev=1543.15, samples=7 iops : min= 1, max= 5, avg= 1.57, stdev= 1.51, samples=7 lat (usec) : 500=8.33% lat (msec) : 250=16.67%, 500=25.00%, 750=25.00%, 1000=25.00% cpu : usr=0.02%, sys=8.50%, ctx=110, 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=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=145705: Thu Aug 13 10:45:35 2026 read: IOPS=1, BW=1385KiB/s (1419kB/s)(6144KiB/4435msec) clat (usec): min=517, max=465397, avg=188947.37, stdev=218074.66 lat (usec): min=518, max=465398, avg=188948.48, stdev=218074.62 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 603], | 30.00th=[ 603], 40.00th=[ 1598], 50.00th=[ 1598], 60.00th=[248513], | 70.00th=[417334], 80.00th=[417334], 90.00th=[463471], 95.00th=[463471], | 99.00th=[463471], 99.50th=[463471], 99.90th=[463471], 99.95th=[463471], | 99.99th=[463471] bw ( KiB/s): min= 2007, max= 6047, per=97.94%, avg=3367.33, stdev=2320.75, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=1, BW=1385KiB/s (1419kB/s)(6144KiB/4435msec); 0 zone resets clat (msec): min=139, max=1227, avg=502.47, stdev=388.22 lat (msec): min=139, max=1227, avg=502.73, stdev=388.19 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 439], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 2015, max= 4039, per=50.50%, avg=2430.40, stdev=899.33, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 750=16.67% lat (msec) : 2=8.33%, 250=25.00%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.14%, sys=8.43%, ctx=127, 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=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=145706: Thu Aug 13 10:45:35 2026 read: IOPS=1, BW=1484KiB/s (1519kB/s)(5120KiB/3451msec) clat (usec): min=350, max=229219, avg=83577.62, stdev=114061.84 lat (usec): min=350, max=229219, avg=83578.74, stdev=114061.36 clat percentiles (usec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 1057], 40.00th=[ 1057], 50.00th=[ 1729], 60.00th=[ 1729], | 70.00th=[185598], 80.00th=[185598], 90.00th=[229639], 95.00th=[229639], | 99.00th=[229639], 99.50th=[229639], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 2048, max= 6047, per=100.00%, avg=4047.50, stdev=2827.72, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=2, BW=2077KiB/s (2127kB/s)(7168KiB/3451msec); 0 zone resets clat (msec): min=102, max=1009, avg=420.60, stdev=321.56 lat (msec): min=102, max=1009, avg=420.70, stdev=321.56 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 194], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 305], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 709], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 2007, max= 2909, per=45.70%, avg=2199.60, stdev=396.87, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (usec) : 500=8.33% lat (msec) : 2=16.67%, 250=33.33%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.03%, sys=9.33%, ctx=98, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=3439KiB/s (3521kB/s), 344KiB/s-2024KiB/s (352kB/s-2073kB/s), io=20.0MiB (20.0MB), run=3451-5956msec WRITE: bw=4814KiB/s (4930kB/s), 1385KiB/s-2077KiB/s (1419kB/s-2127kB/s), io=28.0MiB (29.4MB), run=3451-5956msec 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=145720: Thu Aug 13 10:45:54 2026 read: IOPS=0, BW=3868KiB/s (3961kB/s)(12.0MiB/3177msec) clat (msec): min=985, max=1068, avg=1029.43, stdev=41.61 lat (msec): min=985, max=1068, avg=1029.43, stdev=41.61 clat percentiles (msec): | 1.00th=[ 986], 5.00th=[ 986], 10.00th=[ 986], 20.00th=[ 986], | 30.00th=[ 986], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1036], | 70.00th=[ 1070], 80.00th=[ 1070], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7801, max= 7876, per=100.00%, avg=7838.50, stdev=53.03, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=8.34%, ctx=285, 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=145721: Thu Aug 13 10:45:54 2026 read: IOPS=0, BW=989KiB/s (1013kB/s)(4096KiB/4142msec) clat (nsec): min=1114.0M, max=1114.0M, avg=1114033944.00, stdev= 0.00 lat (nsec): min=1114.0M, max=1114.0M, avg=1114037194.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7922, max= 7922, per=100.00%, avg=7922.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1978KiB/s (2025kB/s)(8192KiB/4142msec); 0 zone resets clat (msec): min=908, max=2006, avg=1457.41, stdev=776.08 lat (msec): min=908, max=2008, avg=1458.56, stdev=777.49 clat percentiles (msec): | 1.00th=[ 911], 5.00th=[ 911], 10.00th=[ 911], 20.00th=[ 911], | 30.00th=[ 911], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 2005], | 70.00th=[ 2005], 80.00th=[ 2005], 90.00th=[ 2005], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 7816, max= 7816, per=100.00%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=6.50%, ctx=145, 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=145722: Thu Aug 13 10:45:54 2026 write: IOPS=0, BW=2862KiB/s (2931kB/s)(12.0MiB/4293msec); 0 zone resets clat (msec): min=652, max=1876, avg=1351.65, stdev=630.20 lat (msec): min=652, max=1876, avg=1351.90, stdev=630.24 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 1519], 50.00th=[ 1519], 60.00th=[ 1519], | 70.00th=[ 1871], 80.00th=[ 1871], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 7968, max= 8159, per=100.00%, avg=8063.50, stdev=135.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.24%, ctx=58, 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=145723: Thu Aug 13 10:45:54 2026 write: IOPS=0, BW=3521KiB/s (3605kB/s)(12.0MiB/3490msec); 0 zone resets clat (msec): min=467, max=1447, avg=1086.65, stdev=538.62 lat (msec): min=469, max=1447, avg=1087.58, stdev=537.90 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 1351], 50.00th=[ 1351], 60.00th=[ 1351], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 7937, max= 8159, per=100.00%, avg=8048.00, stdev=156.98, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.76%, ctx=80, 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=3956KiB/s (4051kB/s), 989KiB/s-3868KiB/s (1013kB/s-3961kB/s), io=16.0MiB (16.8MB), run=3177-4142msec WRITE: bw=7633KiB/s (7816kB/s), 1978KiB/s-3521KiB/s (2025kB/s-3605kB/s), io=32.0MiB (33.6MB), run=3490-4293msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145715: Thu Aug 13 10:45:54 2026 read: IOPS=0, BW=3413KiB/s (3495kB/s)(12.0MiB/3600msec) clat (msec): min=1012, max=1369, avg=1156.27, stdev=188.27 lat (msec): min=1012, max=1369, avg=1156.27, stdev=188.28 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 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= 7922, max= 7984, per=100.00%, avg=7953.00, stdev=43.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=2.14%, ctx=43, 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=145717: Thu Aug 13 10:45:54 2026 read: IOPS=0, BW=2192KiB/s (2244kB/s)(4096KiB/1869msec) clat (nsec): min=325634k, max=325634k, avg=325634147.00, stdev= 0.00 lat (nsec): min=325635k, max=325635k, avg=325635027.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 326], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 326], 95.00th=[ 326], | 99.00th=[ 326], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 5712, max= 5712, per=100.00%, avg=5712.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4383KiB/s (4488kB/s)(8192KiB/1869msec); 0 zone resets clat (msec): min=431, max=920, avg=675.87, stdev=346.03 lat (msec): min=435, max=920, avg=678.28, stdev=343.23 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=5.94%, ctx=54, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145718: Thu Aug 13 10:45:54 2026 write: IOPS=0, BW=2326KiB/s (2381kB/s)(12.0MiB/5284msec); 0 zone resets clat (msec): min=416, max=2562, avg=1688.35, stdev=1126.78 lat (msec): min=417, max=2562, avg=1688.74, stdev=1126.82 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 2089], 50.00th=[ 2089], 60.00th=[ 2089], | 70.00th=[ 2567], 80.00th=[ 2567], 90.00th=[ 2567], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, >=2000=66.67% cpu : usr=0.06%, sys=2.80%, ctx=53, 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=145719: Thu Aug 13 10:45:54 2026 write: IOPS=0, BW=3858KiB/s (3951kB/s)(12.0MiB/3185msec); 0 zone resets clat (msec): min=483, max=1849, avg=1041.04, stdev=716.87 lat (msec): min=484, max=1850, avg=1041.40, stdev=716.80 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 6907, max= 8159, per=100.00%, avg=7533.00, stdev=885.30, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.33%, ctx=38, 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=4551KiB/s (4660kB/s), 2192KiB/s-3413KiB/s (2244kB/s-3495kB/s), io=16.0MiB (16.8MB), run=1869-3600msec WRITE: bw=6201KiB/s (6350kB/s), 2326KiB/s-4383KiB/s (2381kB/s-4488kB/s), io=32.0MiB (33.6MB), run=1869-5284msec