== sanity test 398b: DIO and buffer IO race ============== 03:13:55 (1769760835) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.08289 s, 16.3 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=181311: Fri Jan 30 03:15:12 2026 read: IOPS=22, BW=89.0KiB/s (92.1kB/s)(5992KiB/66597msec) clat (usec): min=397, max=722329, avg=24065.92, stdev=21115.13 lat (usec): min=398, max=722329, avg=24066.85, stdev=21115.13 clat percentiles (usec): | 1.00th=[ 832], 5.00th=[ 8979], 10.00th=[ 11338], 20.00th=[ 14746], | 30.00th=[ 17171], 40.00th=[ 19530], 50.00th=[ 22152], 60.00th=[ 24773], | 70.00th=[ 28443], 80.00th=[ 32113], 90.00th=[ 38011], 95.00th=[ 42730], | 99.00th=[ 57410], 99.50th=[ 64226], 99.90th=[ 80217], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 6, max= 191, per=25.16%, avg=89.83, stdev=28.61, samples=132 iops : min= 1, max= 47, avg=21.99, stdev= 7.19, samples=132 write: IOPS=23, BW=94.5KiB/s (96.8kB/s)(6296KiB/66597msec); 0 zone resets clat (usec): min=802, max=114637, avg=19198.89, stdev=12944.45 lat (usec): min=802, max=114638, avg=19200.99, stdev=12943.88 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 3490], 10.00th=[ 4817], 20.00th=[ 7504], | 30.00th=[ 10945], 40.00th=[ 13698], 50.00th=[ 16450], 60.00th=[ 20055], | 70.00th=[ 24249], 80.00th=[ 29230], 90.00th=[ 36963], 95.00th=[ 43779], | 99.00th=[ 55837], 99.50th=[ 61080], 99.90th=[ 82314], 99.95th=[114820], | 99.99th=[114820] bw ( KiB/s): min= 8, max= 198, per=25.39%, avg=94.98, stdev=31.23, samples=131 iops : min= 2, max= 49, avg=23.28, stdev= 7.83, samples=131 lat (usec) : 500=0.20%, 750=0.23%, 1000=0.42% lat (msec) : 2=0.68%, 4=2.90%, 10=13.12%, 20=33.53%, 50=46.61% lat (msec) : 100=2.25%, 250=0.03%, 750=0.03% cpu : usr=0.10%, sys=27.47%, ctx=11244, 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=181312: Fri Jan 30 03:15:12 2026 read: IOPS=22, BW=88.6KiB/s (90.7kB/s)(5940KiB/67067msec) clat (usec): min=202, max=135442, avg=24363.93, stdev=11933.33 lat (usec): min=202, max=135442, avg=24369.85, stdev=11933.52 clat percentiles (usec): | 1.00th=[ 906], 5.00th=[ 9110], 10.00th=[ 11207], 20.00th=[ 14484], | 30.00th=[ 16909], 40.00th=[ 19792], 50.00th=[ 22676], 60.00th=[ 25822], | 70.00th=[ 29230], 80.00th=[ 33424], 90.00th=[ 40109], 95.00th=[ 45351], | 99.00th=[ 56886], 99.50th=[ 63177], 99.90th=[ 74974], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 6, max= 159, per=24.87%, avg=88.80, stdev=25.34, samples=132 iops : min= 1, max= 39, avg=21.73, stdev= 6.37, samples=132 write: IOPS=23, BW=94.7KiB/s (96.9kB/s)(6348KiB/67067msec); 0 zone resets clat (usec): min=695, max=718595, avg=19249.38, stdev=21758.00 lat (usec): min=695, max=718595, avg=19251.58, stdev=21758.25 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 3326], 10.00th=[ 4686], 20.00th=[ 7046], | 30.00th=[ 10552], 40.00th=[ 13435], 50.00th=[ 16909], 60.00th=[ 19792], | 70.00th=[ 23462], 80.00th=[ 28443], 90.00th=[ 35914], 95.00th=[ 43254], | 99.00th=[ 56361], 99.50th=[ 64750], 99.90th=[117965], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 39, max= 208, per=25.35%, avg=94.81, stdev=31.73, samples=132 iops : min= 9, max= 52, avg=23.24, stdev= 8.01, samples=132 lat (usec) : 250=0.03%, 500=0.16%, 750=0.16%, 1000=0.46% lat (msec) : 2=0.65%, 4=2.57%, 10=13.90%, 20=32.98%, 50=46.22% lat (msec) : 100=2.77%, 250=0.07%, 750=0.03% cpu : usr=0.09%, sys=27.23%, ctx=11239, 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=181313: Fri Jan 30 03:15:12 2026 read: IOPS=22, BW=90.1KiB/s (92.2kB/s)(6028KiB/66922msec) clat (usec): min=140, max=766160, avg=24475.65, stdev=22667.43 lat (usec): min=141, max=766160, avg=24478.75, stdev=22666.09 clat percentiles (usec): | 1.00th=[ 775], 5.00th=[ 8455], 10.00th=[ 11207], 20.00th=[ 14222], | 30.00th=[ 16909], 40.00th=[ 19268], 50.00th=[ 22152], 60.00th=[ 25035], | 70.00th=[ 28443], 80.00th=[ 33162], 90.00th=[ 39584], 95.00th=[ 45876], | 99.00th=[ 64750], 99.50th=[ 72877], 99.90th=[ 89654], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 13, max= 167, per=25.17%, avg=89.87, stdev=26.60, samples=133 iops : min= 3, max= 41, avg=22.01, stdev= 6.70, samples=133 write: IOPS=23, BW=93.5KiB/s (95.8kB/s)(6260KiB/66922msec); 0 zone resets clat (usec): min=769, max=106782, avg=18991.77, stdev=13215.56 lat (usec): min=769, max=106783, avg=18992.94, stdev=13215.60 clat percentiles (usec): | 1.00th=[ 1909], 5.00th=[ 3523], 10.00th=[ 4817], 20.00th=[ 6915], | 30.00th=[ 10159], 40.00th=[ 13042], 50.00th=[ 16319], 60.00th=[ 19792], | 70.00th=[ 23987], 80.00th=[ 29230], 90.00th=[ 36439], 95.00th=[ 44303], | 99.00th=[ 60556], 99.50th=[ 67634], 99.90th=[ 88605], 99.95th=[106431], | 99.99th=[106431] bw ( KiB/s): min= 27, max= 208, per=25.13%, avg=93.97, stdev=32.68, samples=132 iops : min= 6, max= 52, avg=23.03, stdev= 8.20, samples=132 lat (usec) : 250=0.07%, 500=0.10%, 750=0.29%, 1000=0.59% lat (msec) : 2=0.65%, 4=2.86%, 10=14.32%, 20=33.04%, 50=45.21% lat (msec) : 100=2.80%, 250=0.03%, 1000=0.03% cpu : usr=0.09%, sys=27.12%, ctx=11133, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181314: Fri Jan 30 03:15:12 2026 read: IOPS=22, BW=90.1KiB/s (92.3kB/s)(6052KiB/67137msec) clat (usec): min=366, max=102303, avg=23542.66, stdev=11607.13 lat (usec): min=367, max=102304, avg=23545.23, stdev=11608.13 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 8586], 10.00th=[ 10683], 20.00th=[ 13698], | 30.00th=[ 16319], 40.00th=[ 19006], 50.00th=[ 21627], 60.00th=[ 25297], | 70.00th=[ 28705], 80.00th=[ 32375], 90.00th=[ 38536], 95.00th=[ 44827], | 99.00th=[ 57410], 99.50th=[ 64750], 99.90th=[ 74974], 99.95th=[102237], | 99.99th=[102237] bw ( KiB/s): min= 16, max= 183, per=25.24%, avg=90.10, stdev=25.41, samples=132 iops : min= 4, max= 45, avg=22.06, stdev= 6.38, samples=132 write: IOPS=23, BW=92.9KiB/s (95.1kB/s)(6236KiB/67137msec); 0 zone resets clat (usec): min=833, max=757389, avg=20017.64, stdev=22821.94 lat (usec): min=834, max=757390, avg=20022.58, stdev=22819.59 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 3294], 10.00th=[ 4555], 20.00th=[ 6980], | 30.00th=[ 10552], 40.00th=[ 13960], 50.00th=[ 17171], 60.00th=[ 21103], | 70.00th=[ 25297], 80.00th=[ 30802], 90.00th=[ 38011], 95.00th=[ 43779], | 99.00th=[ 57934], 99.50th=[ 64226], 99.90th=[ 90702], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 13, max= 223, per=24.68%, avg=92.32, stdev=34.32, samples=133 iops : min= 3, max= 55, avg=22.62, stdev= 8.62, samples=133 lat (usec) : 500=0.16%, 750=0.36%, 1000=0.39% lat (msec) : 2=0.81%, 4=3.35%, 10=13.28%, 20=32.19%, 50=46.97% lat (msec) : 100=2.41%, 250=0.03%, 1000=0.03% cpu : usr=0.08%, sys=26.95%, ctx=11140, 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=358KiB/s (366kB/s), 88.6KiB/s-90.1KiB/s (90.7kB/s-92.3kB/s), io=23.4MiB (24.6MB), run=66597-67137msec WRITE: bw=374KiB/s (383kB/s), 92.9KiB/s-94.7KiB/s (95.1kB/s-96.9kB/s), io=24.6MiB (25.7MB), run=66597-67137msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181307: Fri Jan 30 03:15:18 2026 read: IOPS=20, BW=82.3KiB/s (84.2kB/s)(5992KiB/72830msec) clat (msec): min=3, max=731, avg=21.64, stdev=23.21 lat (msec): min=3, max=731, avg=21.64, stdev=23.21 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 26], 80.00th=[ 32], 90.00th=[ 42], 95.00th=[ 49], | 99.00th=[ 70], 99.50th=[ 82], 99.90th=[ 95], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 8, max= 280, per=25.11%, avg=82.60, stdev=50.60, samples=144 iops : min= 2, max= 70, avg=20.18, stdev=12.70, samples=144 write: IOPS=21, BW=86.4KiB/s (88.5kB/s)(6296KiB/72830msec); 0 zone resets clat (msec): min=4, max=147, avg=25.48, stdev=16.22 lat (msec): min=4, max=147, avg=25.48, stdev=16.22 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 39], 90.00th=[ 48], 95.00th=[ 56], | 99.00th=[ 74], 99.50th=[ 81], 99.90th=[ 136], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 23, max= 336, per=25.39%, avg=87.34, stdev=55.64, samples=143 iops : min= 5, max= 84, avg=21.38, stdev=13.98, samples=143 lat (msec) : 4=0.20%, 10=20.74%, 20=29.56%, 50=43.46%, 100=5.86% lat (msec) : 250=0.16%, 750=0.03% cpu : usr=0.06%, sys=16.40%, ctx=7762, 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=181308: Fri Jan 30 03:15:18 2026 read: IOPS=20, BW=81.5KiB/s (83.5kB/s)(5940KiB/72850msec) clat (msec): min=3, max=759, avg=21.80, stdev=23.93 lat (msec): min=3, max=759, avg=21.80, stdev=23.93 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 26], 80.00th=[ 32], 90.00th=[ 42], 95.00th=[ 51], | 99.00th=[ 66], 99.50th=[ 75], 99.90th=[ 107], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 328, per=24.85%, avg=81.76, stdev=53.88, samples=144 iops : min= 1, max= 82, avg=19.97, stdev=13.54, samples=144 write: IOPS=21, BW=87.1KiB/s (89.2kB/s)(6348KiB/72850msec); 0 zone resets clat (msec): min=4, max=101, avg=25.30, stdev=16.15 lat (msec): min=4, max=101, avg=25.30, stdev=16.15 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 38], 90.00th=[ 47], 95.00th=[ 56], | 99.00th=[ 80], 99.50th=[ 88], 99.90th=[ 101], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 7, max= 360, per=25.41%, avg=87.40, stdev=57.00, samples=144 iops : min= 1, max= 90, avg=21.39, stdev=14.33, samples=144 lat (msec) : 4=0.46%, 10=21.22%, 20=28.84%, 50=43.23%, 100=6.12% lat (msec) : 250=0.10%, 1000=0.03% cpu : usr=0.10%, sys=16.30%, ctx=7701, 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=181309: Fri Jan 30 03:15:18 2026 read: IOPS=20, BW=82.9KiB/s (84.8kB/s)(6028KiB/72752msec) clat (msec): min=3, max=130, avg=21.49, stdev=15.15 lat (msec): min=3, max=130, avg=21.50, stdev=15.15 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 26], 80.00th=[ 32], 90.00th=[ 43], 95.00th=[ 52], | 99.00th=[ 70], 99.50th=[ 78], 99.90th=[ 94], 99.95th=[ 131], | 99.99th=[ 131] bw ( KiB/s): min= 23, max= 344, per=25.13%, avg=82.67, stdev=53.29, samples=142 iops : min= 5, max= 86, avg=20.20, stdev=13.37, samples=142 write: IOPS=21, BW=86.0KiB/s (88.1kB/s)(6260KiB/72752msec); 0 zone resets clat (msec): min=4, max=766, avg=25.58, stdev=24.69 lat (msec): min=4, max=766, avg=25.58, stdev=24.69 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 37], 90.00th=[ 48], 95.00th=[ 56], | 99.00th=[ 80], 99.50th=[ 89], 99.90th=[ 124], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 15, max= 344, per=24.76%, avg=85.17, stdev=51.59, samples=143 iops : min= 3, max= 86, avg=20.83, stdev=12.96, samples=143 lat (msec) : 4=0.36%, 10=21.35%, 20=29.92%, 50=41.28%, 100=6.93% lat (msec) : 250=0.13%, 1000=0.03% cpu : usr=0.08%, sys=16.32%, ctx=7658, 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=181310: Fri Jan 30 03:15:18 2026 read: IOPS=20, BW=83.0KiB/s (85.0kB/s)(6052KiB/72900msec) clat (usec): min=2702, max=91586, avg=21314.18, stdev=14723.61 lat (usec): min=2703, max=91587, avg=21314.98, stdev=14723.65 clat percentiles (usec): | 1.00th=[ 3982], 5.00th=[ 5145], 10.00th=[ 6259], 20.00th=[ 8848], | 30.00th=[11863], 40.00th=[14615], 50.00th=[17433], 60.00th=[20841], | 70.00th=[25035], 80.00th=[31589], 90.00th=[41681], 95.00th=[51119], | 99.00th=[69731], 99.50th=[74974], 99.90th=[87557], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 16, max= 320, per=25.58%, avg=84.15, stdev=52.19, samples=142 iops : min= 4, max= 80, avg=20.58, stdev=13.12, samples=142 write: IOPS=21, BW=85.5KiB/s (87.6kB/s)(6236KiB/72900msec); 0 zone resets clat (msec): min=3, max=764, avg=25.87, stdev=25.06 lat (msec): min=3, max=764, avg=25.87, stdev=25.06 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 38], 90.00th=[ 48], 95.00th=[ 58], | 99.00th=[ 79], 99.50th=[ 97], 99.90th=[ 144], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 15, max= 288, per=24.83%, avg=85.40, stdev=54.29, samples=144 iops : min= 3, max= 72, avg=20.89, stdev=13.63, samples=144 lat (msec) : 4=0.59%, 10=20.70%, 20=30.01%, 50=41.80%, 100=6.74% lat (msec) : 250=0.13%, 1000=0.03% cpu : usr=0.10%, sys=16.20%, ctx=7744, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=329KiB/s (337kB/s), 81.5KiB/s-83.0KiB/s (83.5kB/s-85.0kB/s), io=23.4MiB (24.6MB), run=72752-72900msec WRITE: bw=345KiB/s (353kB/s), 85.5KiB/s-87.1KiB/s (87.6kB/s-89.2kB/s), io=24.6MiB (25.7MB), run=72752-72900msec 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=181337: Fri Jan 30 03:15:38 2026 read: IOPS=25, BW=404KiB/s (414kB/s)(5920KiB/14640msec) clat (usec): min=376, max=57924, avg=19688.32, stdev=10179.78 lat (usec): min=377, max=57925, avg=19704.18, stdev=10174.63 clat percentiles (usec): | 1.00th=[ 482], 5.00th=[ 6521], 10.00th=[ 9503], 20.00th=[11600], | 30.00th=[13829], 40.00th=[15795], 50.00th=[17957], 60.00th=[20579], | 70.00th=[23200], 80.00th=[27132], 90.00th=[34341], 95.00th=[40633], | 99.00th=[49546], 99.50th=[51119], 99.90th=[57934], 99.95th=[57934], | 99.99th=[57934] bw ( KiB/s): min= 222, max= 608, per=24.45%, avg=394.57, stdev=105.31, samples=28 iops : min= 13, max= 38, avg=24.14, stdev= 6.65, samples=28 write: IOPS=27, BW=435KiB/s (445kB/s)(6368KiB/14640msec); 0 zone resets clat (usec): min=1463, max=74610, avg=18317.13, stdev=12146.27 lat (usec): min=1463, max=74614, avg=18319.23, stdev=12145.96 clat percentiles (usec): | 1.00th=[ 2507], 5.00th=[ 4293], 10.00th=[ 4752], 20.00th=[ 6849], | 30.00th=[ 9372], 40.00th=[12780], 50.00th=[16188], 60.00th=[19792], | 70.00th=[23200], 80.00th=[28443], 90.00th=[34341], 95.00th=[42206], | 99.00th=[53740], 99.50th=[57410], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 128, max= 667, per=25.40%, avg=431.61, stdev=132.95, samples=28 iops : min= 8, max= 41, avg=26.46, stdev= 8.25, samples=28 lat (usec) : 500=0.52%, 750=1.04%, 1000=0.39% lat (msec) : 2=0.65%, 4=1.56%, 10=18.10%, 20=36.85%, 50=39.71% lat (msec) : 100=1.17% cpu : usr=0.08%, sys=28.57%, ctx=3202, 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=181338: Fri Jan 30 03:15:38 2026 read: IOPS=24, BW=396KiB/s (405kB/s)(5744KiB/14520msec) clat (usec): min=372, max=76297, avg=20768.98, stdev=11197.93 lat (usec): min=372, max=76298, avg=20769.67, stdev=11198.03 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 8094], 10.00th=[10028], 20.00th=[11731], | 30.00th=[14353], 40.00th=[16319], 50.00th=[18744], 60.00th=[21103], | 70.00th=[23987], 80.00th=[29230], 90.00th=[34866], 95.00th=[40633], | 99.00th=[56361], 99.50th=[66847], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 160, max= 637, per=24.25%, avg=391.46, stdev=124.08, samples=28 iops : min= 10, max= 39, avg=23.96, stdev= 7.69, samples=28 write: IOPS=28, BW=451KiB/s (462kB/s)(6544KiB/14520msec); 0 zone resets clat (usec): min=1412, max=71415, avg=17164.61, stdev=11422.86 lat (usec): min=1414, max=71417, avg=17167.06, stdev=11423.75 clat percentiles (usec): | 1.00th=[ 2900], 5.00th=[ 4293], 10.00th=[ 4883], 20.00th=[ 6849], | 30.00th=[ 9896], 40.00th=[12256], 50.00th=[15401], 60.00th=[17433], | 70.00th=[21103], 80.00th=[25297], 90.00th=[31851], 95.00th=[40633], | 99.00th=[54264], 99.50th=[59507], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 256, max= 702, per=25.96%, avg=441.14, stdev=111.63, samples=28 iops : min= 16, max= 43, avg=27.07, stdev= 6.99, samples=28 lat (usec) : 500=0.78%, 750=0.78%, 1000=0.13% lat (msec) : 2=0.26%, 4=1.82%, 10=17.06%, 20=40.89%, 50=36.46% lat (msec) : 100=1.82% cpu : usr=0.10%, sys=29.00%, ctx=3196, 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=181339: Fri Jan 30 03:15:38 2026 read: IOPS=26, BW=422KiB/s (432kB/s)(6256KiB/14831msec) clat (usec): min=370, max=55872, avg=20472.08, stdev=10570.78 lat (usec): min=371, max=55874, avg=20472.82, stdev=10570.82 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 5211], 10.00th=[ 9110], 20.00th=[11994], | 30.00th=[15008], 40.00th=[16909], 50.00th=[19530], 60.00th=[21365], | 70.00th=[23725], 80.00th=[28181], 90.00th=[34341], 95.00th=[40109], | 99.00th=[53740], 99.50th=[55313], 99.90th=[55837], 99.95th=[55837], | 99.99th=[55837] bw ( KiB/s): min= 256, max= 672, per=25.92%, avg=418.41, stdev=104.25, samples=29 iops : min= 16, max= 42, avg=25.66, stdev= 6.50, samples=29 write: IOPS=25, BW=407KiB/s (416kB/s)(6032KiB/14831msec); 0 zone resets clat (usec): min=1358, max=75238, avg=18013.22, stdev=12011.37 lat (usec): min=1359, max=75240, avg=18014.41, stdev=12011.40 clat percentiles (usec): | 1.00th=[ 3392], 5.00th=[ 4490], 10.00th=[ 5014], 20.00th=[ 7373], | 30.00th=[10028], 40.00th=[12256], 50.00th=[14877], 60.00th=[17957], | 70.00th=[21103], 80.00th=[28443], 90.00th=[36963], 95.00th=[41157], | 99.00th=[51119], 99.50th=[55837], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 160, max= 672, per=23.32%, avg=396.28, stdev=149.44, samples=29 iops : min= 10, max= 42, avg=24.28, stdev= 9.35, samples=29 lat (usec) : 500=0.13%, 750=1.43%, 1000=0.39% lat (msec) : 2=0.52%, 4=0.78%, 10=17.97%, 20=38.28%, 50=39.19% lat (msec) : 100=1.30% cpu : usr=0.08%, sys=28.12%, ctx=3251, 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=181340: Fri Jan 30 03:15:38 2026 read: IOPS=26, BW=430KiB/s (441kB/s)(6032KiB/14012msec) clat (usec): min=144, max=74799, avg=19839.75, stdev=11511.14 lat (usec): min=145, max=74800, avg=19840.82, stdev=11511.16 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 1139], 10.00th=[ 8848], 20.00th=[11731], | 30.00th=[13435], 40.00th=[15664], 50.00th=[17957], 60.00th=[20317], | 70.00th=[22938], 80.00th=[27395], 90.00th=[32900], 95.00th=[43254], | 99.00th=[56361], 99.50th=[68682], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 160, max= 608, per=26.37%, avg=425.63, stdev=112.05, samples=27 iops : min= 10, max= 38, avg=26.07, stdev= 7.04, samples=27 write: IOPS=27, BW=446KiB/s (457kB/s)(6256KiB/14012msec); 0 zone resets clat (usec): min=1324, max=66830, avg=16598.08, stdev=11691.41 lat (usec): min=1325, max=66832, avg=16599.78, stdev=11691.78 clat percentiles (usec): | 1.00th=[ 2507], 5.00th=[ 4228], 10.00th=[ 4817], 20.00th=[ 6783], | 30.00th=[ 8979], 40.00th=[11207], 50.00th=[13829], 60.00th=[16450], | 70.00th=[19530], 80.00th=[24773], 90.00th=[32900], 95.00th=[41157], | 99.00th=[53740], 99.50th=[62129], 99.90th=[66847], 99.95th=[66847], | 99.99th=[66847] bw ( KiB/s): min= 191, max= 702, per=26.23%, avg=445.67, stdev=138.05, samples=27 iops : min= 11, max= 43, avg=27.33, stdev= 8.57, samples=27 lat (usec) : 250=0.26%, 500=0.39%, 750=1.17%, 1000=0.52% lat (msec) : 2=0.52%, 4=2.47%, 10=18.49%, 20=41.67%, 50=32.42% lat (msec) : 100=2.08% cpu : usr=0.09%, sys=28.73%, ctx=3151, 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=1615KiB/s (1654kB/s), 396KiB/s-430KiB/s (405kB/s-441kB/s), io=23.4MiB (24.5MB), run=14012-14831msec WRITE: bw=1699KiB/s (1740kB/s), 407KiB/s-451KiB/s (416kB/s-462kB/s), io=24.6MiB (25.8MB), run=14012-14831msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181342: Fri Jan 30 03:15:40 2026 read: IOPS=22, BW=362KiB/s (370kB/s)(5920KiB/16369msec) clat (usec): min=3332, max=88086, avg=19594.68, stdev=13445.32 lat (usec): min=3332, max=88086, avg=19595.33, stdev=13445.36 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 5735], 10.00th=[ 7242], 20.00th=[ 9372], | 30.00th=[11469], 40.00th=[13042], 50.00th=[15533], 60.00th=[18482], | 70.00th=[22152], 80.00th=[28705], 90.00th=[39060], 95.00th=[45876], | 99.00th=[65274], 99.50th=[80217], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 223, max= 766, per=24.46%, avg=354.47, stdev=138.40, samples=32 iops : min= 13, max= 47, avg=21.56, stdev= 8.64, samples=32 write: IOPS=24, BW=389KiB/s (398kB/s)(6368KiB/16369msec); 0 zone resets clat (usec): min=5464, max=90877, avg=22770.72, stdev=13626.87 lat (usec): min=5465, max=90878, avg=22772.25, stdev=13626.94 clat percentiles (usec): | 1.00th=[ 6128], 5.00th=[ 7767], 10.00th=[ 9503], 20.00th=[11600], | 30.00th=[13829], 40.00th=[15926], 50.00th=[18482], 60.00th=[21890], | 70.00th=[27657], 80.00th=[33817], 90.00th=[40633], 95.00th=[47449], | 99.00th=[72877], 99.50th=[82314], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 31, max= 830, per=25.34%, avg=386.37, stdev=170.14, samples=32 iops : min= 1, max= 51, avg=23.53, stdev=10.70, samples=32 lat (msec) : 4=0.13%, 10=17.19%, 20=42.45%, 50=36.20%, 100=4.04% cpu : usr=0.08%, sys=15.44%, ctx=1966, 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=181343: Fri Jan 30 03:15:40 2026 read: IOPS=21, BW=352KiB/s (360kB/s)(5744KiB/16329msec) clat (usec): min=3949, max=90470, avg=19795.73, stdev=13925.72 lat (usec): min=3950, max=90470, avg=19796.35, stdev=13925.74 clat percentiles (usec): | 1.00th=[ 5145], 5.00th=[ 6456], 10.00th=[ 7570], 20.00th=[ 9372], | 30.00th=[11076], 40.00th=[12780], 50.00th=[14746], 60.00th=[17695], | 70.00th=[21627], 80.00th=[29492], 90.00th=[38011], 95.00th=[48497], | 99.00th=[72877], 99.50th=[84411], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 96, max= 736, per=24.10%, avg=349.25, stdev=143.93, samples=32 iops : min= 6, max= 46, avg=21.22, stdev= 9.08, samples=32 write: IOPS=25, BW=401KiB/s (410kB/s)(6544KiB/16329msec); 0 zone resets clat (usec): min=4977, max=86363, avg=22358.96, stdev=13829.60 lat (usec): min=4978, max=86365, avg=22360.34, stdev=13829.61 clat percentiles (usec): | 1.00th=[ 6128], 5.00th=[ 7504], 10.00th=[ 9110], 20.00th=[10945], | 30.00th=[13042], 40.00th=[15401], 50.00th=[18482], 60.00th=[22414], | 70.00th=[26346], 80.00th=[31851], 90.00th=[41157], 95.00th=[47449], | 99.00th=[70779], 99.50th=[73925], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 160, max= 1053, per=25.98%, avg=396.25, stdev=186.38, samples=32 iops : min= 10, max= 65, avg=24.16, stdev=11.64, samples=32 lat (msec) : 4=0.13%, 10=18.23%, 20=41.15%, 50=36.20%, 100=4.30% cpu : usr=0.10%, sys=15.16%, ctx=1906, 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=181344: Fri Jan 30 03:15:40 2026 read: IOPS=23, BW=381KiB/s (390kB/s)(6256KiB/16415msec) clat (usec): min=3741, max=84002, avg=19637.56, stdev=13446.37 lat (usec): min=3742, max=84003, avg=19638.31, stdev=13446.42 clat percentiles (usec): | 1.00th=[ 4424], 5.00th=[ 5735], 10.00th=[ 6587], 20.00th=[ 8848], | 30.00th=[10945], 40.00th=[13042], 50.00th=[15664], 60.00th=[18744], | 70.00th=[23200], 80.00th=[28967], 90.00th=[37487], 95.00th=[44827], | 99.00th=[67634], 99.50th=[81265], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 180, max= 1120, per=26.05%, avg=377.53, stdev=204.94, samples=32 iops : min= 11, max= 70, avg=23.00, stdev=12.87, samples=32 write: IOPS=22, BW=367KiB/s (376kB/s)(6032KiB/16415msec); 0 zone resets clat (usec): min=4997, max=87067, avg=22956.84, stdev=14193.24 lat (usec): min=4998, max=87069, avg=22959.38, stdev=14192.32 clat percentiles (usec): | 1.00th=[ 6063], 5.00th=[ 7177], 10.00th=[ 8586], 20.00th=[10814], | 30.00th=[12518], 40.00th=[15270], 50.00th=[19006], 60.00th=[23462], | 70.00th=[28443], 80.00th=[33817], 90.00th=[42206], 95.00th=[49021], | 99.00th=[69731], 99.50th=[74974], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 160, max= 862, per=23.48%, avg=358.09, stdev=171.53, samples=32 iops : min= 10, max= 53, avg=21.78, stdev=10.75, samples=32 lat (msec) : 4=0.26%, 10=20.83%, 20=36.72%, 50=38.41%, 100=3.78% cpu : usr=0.13%, sys=15.04%, ctx=2063, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181345: Fri Jan 30 03:15:40 2026 read: IOPS=22, BW=365KiB/s (374kB/s)(6032KiB/16520msec) clat (usec): min=3085, max=81876, avg=20067.04, stdev=13739.90 lat (usec): min=3086, max=81877, avg=20067.71, stdev=13739.90 clat percentiles (usec): | 1.00th=[ 3621], 5.00th=[ 5800], 10.00th=[ 6980], 20.00th=[ 9765], | 30.00th=[11731], 40.00th=[13173], 50.00th=[15270], 60.00th=[18220], | 70.00th=[22676], 80.00th=[29754], 90.00th=[39060], 95.00th=[49021], | 99.00th=[70779], 99.50th=[74974], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 126, max= 862, per=24.27%, avg=351.62, stdev=172.90, samples=32 iops : min= 7, max= 53, avg=21.37, stdev=10.82, samples=32 write: IOPS=23, BW=379KiB/s (388kB/s)(6256KiB/16520msec); 0 zone resets clat (usec): min=4023, max=71299, avg=22743.52, stdev=14610.97 lat (usec): min=4024, max=71302, avg=22744.98, stdev=14611.03 clat percentiles (usec): | 1.00th=[ 4883], 5.00th=[ 6783], 10.00th=[ 8094], 20.00th=[11076], | 30.00th=[13173], 40.00th=[15139], 50.00th=[18482], 60.00th=[21365], | 70.00th=[26346], 80.00th=[33817], 90.00th=[44827], 95.00th=[53216], | 99.00th=[65274], 99.50th=[68682], 99.90th=[70779], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 158, max= 768, per=23.99%, avg=365.81, stdev=152.10, samples=32 iops : min= 9, max= 48, avg=22.25, stdev= 9.58, samples=32 lat (msec) : 4=0.91%, 10=18.62%, 20=40.36%, 50=35.03%, 100=5.08% cpu : usr=0.09%, sys=14.87%, ctx=1924, 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=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=1450KiB/s (1485kB/s), 352KiB/s-381KiB/s (360kB/s-390kB/s), io=23.4MiB (24.5MB), run=16329-16520msec WRITE: bw=1525KiB/s (1562kB/s), 367KiB/s-401KiB/s (376kB/s-410kB/s), io=24.6MiB (25.8MB), run=16329-16520msec 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=181358: Fri Jan 30 03:15:50 2026 read: IOPS=1, BW=1888KiB/s (1934kB/s)(7168KiB/3796msec) clat (msec): min=48, max=827, avg=334.98, stdev=287.89 lat (msec): min=48, max=827, avg=334.98, stdev=287.88 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 48], 10.00th=[ 48], 20.00th=[ 64], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 397], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 485], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1675, max= 6144, per=70.12%, avg=2966.25, stdev=2124.84, samples=4 iops : min= 1, max= 6, avg= 2.25, stdev= 2.50, samples=4 write: IOPS=1, BW=1349KiB/s (1381kB/s)(5120KiB/3796msec); 0 zone resets clat (msec): min=67, max=453, avg=286.86, stdev=152.03 lat (msec): min=67, max=453, avg=286.96, stdev=152.06 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 68], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 2035, max= 4096, per=43.17%, avg=2556.75, stdev=1026.18, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.26, samples=4 lat (msec) : 50=8.33%, 100=25.00%, 250=8.33%, 500=50.00%, 1000=8.33% cpu : usr=0.03%, sys=16.55%, ctx=186, 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=181359: Fri Jan 30 03:15:50 2026 read: IOPS=0, BW=428KiB/s (438kB/s)(2048KiB/4790msec) clat (msec): min=259, max=560, avg=410.02, stdev=212.53 lat (msec): min=259, max=560, avg=410.02, stdev=212.53 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 259], 50.00th=[ 259], 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= 1675, max= 2048, per=44.01%, avg=1861.50, stdev=263.75, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2138KiB/s (2189kB/s)(10.0MiB/4790msec); 0 zone resets clat (msec): min=53, max=1611, avg=377.77, stdev=461.09 lat (msec): min=53, max=1611, avg=377.84, stdev=461.09 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 127], 50.00th=[ 174], 60.00th=[ 247], | 70.00th=[ 388], 80.00th=[ 401], 90.00th=[ 542], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 2035, max= 4096, per=45.94%, avg=2720.33, stdev=1046.74, samples=6 iops : min= 1, max= 4, avg= 2.33, stdev= 1.03, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=18.35%, ctx=204, 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=181360: Fri Jan 30 03:15:50 2026 read: IOPS=1, BW=1365KiB/s (1397kB/s)(6144KiB/4502msec) clat (msec): min=51, max=305, avg=131.09, stdev=94.53 lat (msec): min=51, max=305, avg=131.09, stdev=94.53 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 52], 10.00th=[ 52], 20.00th=[ 73], | 30.00th=[ 73], 40.00th=[ 77], 50.00th=[ 77], 60.00th=[ 115], | 70.00th=[ 165], 80.00th=[ 165], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 2048, max= 4071, per=80.11%, avg=3388.67, stdev=1161.11, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 write: IOPS=1, BW=1365KiB/s (1397kB/s)(6144KiB/4502msec); 0 zone resets clat (msec): min=22, max=2156, avg=586.98, stdev=791.33 lat (msec): min=22, max=2156, avg=587.03, stdev=791.34 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 23], 10.00th=[ 23], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 380], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 2048, max= 4047, per=53.17%, avg=3148.67, stdev=1014.74, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 lat (msec) : 50=8.33%, 100=25.00%, 250=25.00%, 500=25.00%, 750=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=13.84%, ctx=140, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181361: Fri Jan 30 03:15:50 2026 read: IOPS=1, BW=1058KiB/s (1083kB/s)(5120KiB/4841msec) clat (msec): min=12, max=577, avg=270.86, stdev=246.70 lat (msec): min=12, max=577, avg=270.86, stdev=246.70 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 13], 10.00th=[ 13], 20.00th=[ 13], | 30.00th=[ 70], 40.00th=[ 70], 50.00th=[ 224], 60.00th=[ 224], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 2048, max= 4096, per=72.62%, avg=3072.00, stdev=1448.15, samples=2 iops : min= 2, max= 4, avg= 3.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1481KiB/s (1516kB/s)(7168KiB/4841msec); 0 zone resets clat (msec): min=23, max=1508, avg=470.94, stdev=554.59 lat (msec): min=23, max=1508, avg=471.00, stdev=554.59 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 24], 10.00th=[ 24], 20.00th=[ 26], | 30.00th=[ 34], 40.00th=[ 34], 50.00th=[ 259], 60.00th=[ 676], | 70.00th=[ 676], 80.00th=[ 776], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 1681, max= 2048, per=32.87%, avg=1946.75, stdev=177.46, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 20=8.33%, 50=25.00%, 100=8.33%, 250=8.33%, 500=16.67% lat (msec) : 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.02%, sys=12.62%, ctx=159, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4231KiB/s (4332kB/s), 428KiB/s-1888KiB/s (438kB/s-1934kB/s), io=20.0MiB (20.0MB), run=3796-4841msec WRITE: bw=5923KiB/s (6065kB/s), 1349KiB/s-2138KiB/s (1381kB/s-2189kB/s), io=28.0MiB (29.4MB), run=3796-4841msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181353: Fri Jan 30 03:15:50 2026 read: IOPS=1, BW=1648KiB/s (1688kB/s)(7168KiB/4349msec) clat (msec): min=4, max=841, avg=275.84, stdev=276.02 lat (msec): min=4, max=841, avg=275.84, stdev=276.03 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 68], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 205], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 342], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1965, max= 4096, per=69.23%, avg=3035.75, stdev=1192.01, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1177KiB/s (1206kB/s)(5120KiB/4349msec); 0 zone resets clat (msec): min=152, max=619, avg=474.83, stdev=189.15 lat (msec): min=152, max=619, avg=474.89, stdev=189.16 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 498], 40.00th=[ 498], 50.00th=[ 502], 60.00th=[ 502], | 70.00th=[ 609], 80.00th=[ 609], 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= 1889, max= 2048, per=32.48%, avg=1993.80, stdev=67.68, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 10=8.33%, 100=8.33%, 250=25.00%, 500=25.00%, 750=25.00% lat (msec) : 1000=8.33% cpu : usr=0.00%, sys=42.23%, ctx=1188, 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=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=181355: Fri Jan 30 03:15:50 2026 read: IOPS=0, BW=439KiB/s (449kB/s)(2048KiB/4670msec) clat (msec): min=144, max=190, avg=167.80, stdev=32.41 lat (msec): min=144, max=190, avg=167.81, stdev=32.41 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 146], 60.00th=[ 190], | 70.00th=[ 190], 80.00th=[ 190], 90.00th=[ 190], 95.00th=[ 190], | 99.00th=[ 190], 99.50th=[ 190], 99.90th=[ 190], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 1692, max= 1965, per=41.70%, avg=1828.50, stdev=193.04, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2193KiB/s (2245kB/s)(10.0MiB/4670msec); 0 zone resets clat (msec): min=79, max=1135, avg=425.01, stdev=345.52 lat (msec): min=79, max=1135, avg=425.08, stdev=345.52 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 142], | 30.00th=[ 171], 40.00th=[ 226], 50.00th=[ 262], 60.00th=[ 342], | 70.00th=[ 405], 80.00th=[ 625], 90.00th=[ 869], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 1889, max= 4087, per=48.56%, avg=2981.25, stdev=1189.08, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.02%, sys=39.62%, ctx=317, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181356: Fri Jan 30 03:15:50 2026 read: IOPS=1, BW=1404KiB/s (1438kB/s)(6144KiB/4375msec) clat (usec): min=1438, max=360855, avg=179239.69, stdev=155587.36 lat (usec): min=1439, max=360856, avg=179240.77, stdev=155587.51 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1434], 10.00th=[ 1434], 20.00th=[ 1663], | 30.00th=[ 1663], 40.00th=[139461], 50.00th=[139461], 60.00th=[270533], | 70.00th=[299893], 80.00th=[299893], 90.00th=[362808], 95.00th=[362808], | 99.00th=[362808], 99.50th=[362808], 99.90th=[362808], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 1965, max= 4087, per=74.72%, avg=3276.67, stdev=1146.40, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1404KiB/s (1438kB/s)(6144KiB/4375msec); 0 zone resets clat (msec): min=127, max=1408, avg=540.60, stdev=476.21 lat (msec): min=127, max=1408, avg=540.67, stdev=476.21 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 558], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 1889, max= 3390, per=37.20%, avg=2283.60, stdev=622.24, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 lat (msec) : 2=16.67%, 250=25.00%, 500=33.33%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=36.69%, ctx=251, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181357: Fri Jan 30 03:15:50 2026 read: IOPS=1, BW=1152KiB/s (1180kB/s)(5120KiB/4445msec) clat (usec): min=978, max=357606, avg=129401.24, stdev=177117.97 lat (usec): min=979, max=357608, avg=129402.14, stdev=177118.07 clat percentiles (usec): | 1.00th=[ 979], 5.00th=[ 979], 10.00th=[ 979], 20.00th=[ 979], | 30.00th=[ 1549], 40.00th=[ 1549], 50.00th=[ 1713], 60.00th=[ 1713], | 70.00th=[283116], 80.00th=[283116], 90.00th=[358613], 95.00th=[358613], | 99.00th=[358613], 99.50th=[358613], 99.90th=[358613], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 3930, max= 4096, per=91.52%, avg=4013.00, stdev=117.38, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1613KiB/s (1651kB/s)(7168KiB/4445msec); 0 zone resets clat (msec): min=137, max=1234, avg=540.26, stdev=474.91 lat (msec): min=137, max=1234, avg=540.33, stdev=474.92 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 165], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 435], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 1183], 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= 1692, max= 2048, per=32.09%, avg=1970.00, stdev=155.87, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (usec) : 1000=8.33% lat (msec) : 2=16.67%, 250=25.00%, 500=33.33%, 2000=16.67% cpu : usr=0.02%, sys=38.28%, ctx=365, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4385KiB/s (4491kB/s), 439KiB/s-1648KiB/s (449kB/s-1688kB/s), io=20.0MiB (20.0MB), run=4349-4670msec WRITE: bw=6140KiB/s (6287kB/s), 1177KiB/s-2193KiB/s (1206kB/s-2245kB/s), io=28.0MiB (29.4MB), run=4349-4670msec 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=181367: Fri Jan 30 03:15:59 2026 read: IOPS=2, BW=8847KiB/s (9059kB/s)(12.0MiB/1389msec) clat (msec): min=185, max=885, avg=454.86, stdev=376.56 lat (msec): min=185, max=885, avg=454.86, stdev=376.56 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min=14628, max=14628, per=100.00%, avg=14628.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=23.92%, ctx=69, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=181368: Fri Jan 30 03:15:59 2026 read: IOPS=0, BW=2393KiB/s (2450kB/s)(4096KiB/1712msec) clat (nsec): min=405032k, max=405032k, avg=405032248.00, stdev= 0.00 lat (nsec): min=405033k, max=405033k, avg=405033333.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 7262, max= 7262, per=75.88%, avg=7262.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4785KiB/s (4900kB/s)(8192KiB/1712msec); 0 zone resets clat (msec): min=585, max=692, avg=639.02, stdev=75.80 lat (msec): min=585, max=692, avg=639.34, stdev=75.74 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 693], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7984, max= 7984, per=52.26%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=21.86%, ctx=78, 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=181369: Fri Jan 30 03:15:59 2026 write: IOPS=1, BW=5729KiB/s (5866kB/s)(12.0MiB/2145msec); 0 zone resets clat (msec): min=308, max=1372, avg=704.11, stdev=582.04 lat (msec): min=308, max=1372, avg=704.44, stdev=581.97 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 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= 7984, max= 8192, per=52.95%, avg=8088.00, stdev=147.08, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.05%, sys=19.12%, ctx=266, 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=181370: Fri Jan 30 03:15:59 2026 write: IOPS=1, BW=7132KiB/s (7303kB/s)(12.0MiB/1723msec); 0 zone resets clat (msec): min=200, max=1035, avg=566.22, stdev=427.35 lat (msec): min=200, max=1036, avg=566.50, stdev=427.38 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 1036], 80.00th=[ 1036], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7380, max= 7846, per=49.84%, avg=7613.00, stdev=329.51, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=16.32%, ctx=70, 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=9570KiB/s (9800kB/s), 2393KiB/s-8847KiB/s (2450kB/s-9059kB/s), io=16.0MiB (16.8MB), run=1389-1712msec WRITE: bw=14.9MiB/s (15.6MB/s), 4785KiB/s-7132KiB/s (4900kB/s-7303kB/s), io=32.0MiB (33.6MB), run=1712-2145msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181372: Fri Jan 30 03:15:59 2026 read: IOPS=1, BW=6978KiB/s (7145kB/s)(12.0MiB/1761msec) clat (msec): min=384, max=650, avg=561.42, stdev=153.24 lat (msec): min=384, max=650, avg=561.42, stdev=153.23 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 7907, max= 8062, per=100.00%, avg=7984.50, stdev=109.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=53.12%, ctx=2378, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181373: Fri Jan 30 03:15:59 2026 read: IOPS=0, BW=1802KiB/s (1845kB/s)(4096KiB/2273msec) clat (nsec): min=400272k, max=400272k, avg=400272474.00, stdev= 0.00 lat (nsec): min=400275k, max=400275k, avg=400275141.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 7876, max= 7876, per=100.00%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3604KiB/s (3691kB/s)(8192KiB/2273msec); 0 zone resets clat (msec): min=214, max=1594, avg=904.51, stdev=976.40 lat (msec): min=214, max=1595, avg=904.75, stdev=976.49 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 215], 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] lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=21.35%, ctx=781, 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=181374: Fri Jan 30 03:15:59 2026 write: IOPS=1, BW=5378KiB/s (5507kB/s)(12.0MiB/2285msec); 0 zone resets clat (msec): min=271, max=1699, avg=757.26, stdev=815.81 lat (msec): min=271, max=1699, avg=757.60, stdev=815.75 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 300], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=18.48%, ctx=102, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181375: Fri Jan 30 03:15:59 2026 write: IOPS=1, BW=6156KiB/s (6304kB/s)(12.0MiB/1996msec); 0 zone resets clat (msec): min=480, max=732, avg=647.60, stdev=144.75 lat (msec): min=480, max=733, avg=647.90, stdev=144.78 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 481], 10.00th=[ 481], 20.00th=[ 481], | 30.00th=[ 481], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 735], 80.00th=[ 735], 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= 8062, max= 8192, per=56.67%, avg=8127.00, stdev=91.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.05%, sys=27.97%, ctx=169, 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=7208KiB/s (7381kB/s), 1802KiB/s-6978KiB/s (1845kB/s-7145kB/s), io=16.0MiB (16.8MB), run=1761-2273msec WRITE: bw=14.0MiB/s (14.7MB/s), 3604KiB/s-6156KiB/s (3691kB/s-6304kB/s), io=32.0MiB (33.6MB), run=1996-2285msec