== sanity test 398b: DIO and buffer IO race ============== 03:09:30 (1769760570) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.04453 s, 16.5 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=181868: Fri Jan 30 03:10:36 2026 read: IOPS=26, BW=107KiB/s (110kB/s)(5992KiB/56011msec) clat (usec): min=245, max=859532, avg=20451.90, stdev=23845.23 lat (usec): min=246, max=859533, avg=20453.93, stdev=23845.90 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 8029], 10.00th=[ 9896], 20.00th=[ 12256], | 30.00th=[ 14222], 40.00th=[ 16319], 50.00th=[ 18220], 60.00th=[ 20579], | 70.00th=[ 23200], 80.00th=[ 27132], 90.00th=[ 32113], 95.00th=[ 37487], | 99.00th=[ 54264], 99.50th=[ 58983], 99.90th=[105382], 99.95th=[859833], | 99.99th=[859833] bw ( KiB/s): min= 13, max= 175, per=24.88%, avg=106.50, stdev=28.74, samples=111 iops : min= 3, max= 43, avg=26.25, stdev= 7.19, samples=111 write: IOPS=28, BW=112KiB/s (115kB/s)(6296KiB/56011msec); 0 zone resets clat (usec): min=966, max=83371, avg=16039.60, stdev=12028.77 lat (usec): min=966, max=83372, avg=16041.24, stdev=12029.17 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 2737], 10.00th=[ 3228], 20.00th=[ 4752], | 30.00th=[ 8029], 40.00th=[11207], 50.00th=[13435], 60.00th=[16581], | 70.00th=[20317], 80.00th=[25035], 90.00th=[32113], 95.00th=[38536], | 99.00th=[55313], 99.50th=[59507], 99.90th=[82314], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 32, max= 191, per=25.19%, avg=112.85, stdev=30.77, samples=110 iops : min= 8, max= 47, avg=27.85, stdev= 7.71, samples=110 lat (usec) : 250=0.03%, 500=0.39%, 750=0.59%, 1000=0.03% lat (msec) : 2=1.04%, 4=7.71%, 10=13.93%, 20=39.81%, 50=34.99% lat (msec) : 100=1.40%, 250=0.03%, 1000=0.03% cpu : usr=0.10%, sys=23.24%, ctx=9734, 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=181869: Fri Jan 30 03:10:36 2026 read: IOPS=26, BW=107KiB/s (109kB/s)(5940KiB/55765msec) clat (usec): min=192, max=865377, avg=20448.08, stdev=24066.72 lat (usec): min=193, max=865378, avg=20449.27, stdev=24066.70 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 8160], 10.00th=[ 9503], 20.00th=[ 11600], | 30.00th=[ 13829], 40.00th=[ 15664], 50.00th=[ 18220], 60.00th=[ 20841], | 70.00th=[ 23725], 80.00th=[ 27395], 90.00th=[ 32637], 95.00th=[ 38536], | 99.00th=[ 47449], 99.50th=[ 56886], 99.90th=[ 99091], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 16, max= 168, per=25.05%, avg=107.22, stdev=28.76, samples=109 iops : min= 4, max= 42, avg=26.43, stdev= 7.22, samples=109 write: IOPS=28, BW=114KiB/s (117kB/s)(6348KiB/55765msec); 0 zone resets clat (usec): min=898, max=101472, avg=15921.88, stdev=12381.95 lat (usec): min=900, max=101473, avg=15922.93, stdev=12381.97 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 2802], 10.00th=[ 3326], 20.00th=[ 4621], | 30.00th=[ 7635], 40.00th=[ 10814], 50.00th=[ 13042], 60.00th=[ 16319], | 70.00th=[ 20055], 80.00th=[ 24511], 90.00th=[ 31327], 95.00th=[ 39060], | 99.00th=[ 57934], 99.50th=[ 65274], 99.90th=[ 99091], 99.95th=[101188], | 99.99th=[101188] bw ( KiB/s): min= 40, max= 191, per=25.44%, avg=113.97, stdev=32.45, samples=109 iops : min= 10, max= 47, avg=28.12, stdev= 8.11, samples=109 lat (usec) : 250=0.03%, 500=0.29%, 750=0.33%, 1000=0.36% lat (msec) : 2=0.98%, 4=7.85%, 10=15.20%, 20=38.61%, 50=34.96% lat (msec) : 100=1.33%, 250=0.03%, 1000=0.03% cpu : usr=0.12%, sys=23.46%, ctx=9900, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181870: Fri Jan 30 03:10:36 2026 read: IOPS=27, BW=108KiB/s (111kB/s)(6028KiB/55559msec) clat (usec): min=213, max=121243, avg=19816.32, stdev=10649.32 lat (usec): min=213, max=121244, avg=19817.27, stdev=10649.34 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 8291], 10.00th=[ 9634], 20.00th=[ 11469], | 30.00th=[ 13435], 40.00th=[ 15270], 50.00th=[ 17957], 60.00th=[ 20317], | 70.00th=[ 23200], 80.00th=[ 26870], 90.00th=[ 32637], 95.00th=[ 39060], | 99.00th=[ 52691], 99.50th=[ 63701], 99.90th=[ 90702], 99.95th=[121111], | 99.99th=[121111] bw ( KiB/s): min= 16, max= 183, per=25.49%, avg=109.11, stdev=28.83, samples=109 iops : min= 4, max= 45, avg=26.91, stdev= 7.23, samples=109 write: IOPS=28, BW=113KiB/s (115kB/s)(6260KiB/55559msec); 0 zone resets clat (usec): min=990, max=869024, avg=16330.81, stdev=24604.24 lat (usec): min=991, max=869027, avg=16331.92, stdev=24604.31 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 2704], 10.00th=[ 3294], 20.00th=[ 4555], | 30.00th=[ 7767], 40.00th=[ 10683], 50.00th=[ 13173], 60.00th=[ 16319], | 70.00th=[ 20317], 80.00th=[ 24511], 90.00th=[ 32637], 95.00th=[ 38011], | 99.00th=[ 52167], 99.50th=[ 62129], 99.90th=[ 80217], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 32, max= 200, per=25.28%, avg=113.24, stdev=32.90, samples=109 iops : min= 8, max= 50, avg=27.94, stdev= 8.26, samples=109 lat (usec) : 250=0.10%, 500=0.29%, 750=0.49%, 1000=0.16% lat (msec) : 2=1.27%, 4=7.42%, 10=15.17%, 20=39.62%, 50=34.18% lat (msec) : 100=1.24%, 250=0.03%, 1000=0.03% cpu : usr=0.11%, sys=23.15%, ctx=9684, 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=181871: Fri Jan 30 03:10:36 2026 read: IOPS=27, BW=108KiB/s (111kB/s)(6052KiB/55974msec) clat (usec): min=146, max=85856, avg=19915.07, stdev=10267.54 lat (usec): min=146, max=85858, avg=19917.28, stdev=10267.55 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 8160], 10.00th=[ 9503], 20.00th=[11731], | 30.00th=[13829], 40.00th=[15664], 50.00th=[18220], 60.00th=[20841], | 70.00th=[23725], 80.00th=[27132], 90.00th=[32637], 95.00th=[36963], | 99.00th=[54264], 99.50th=[62653], 99.90th=[84411], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 24, max= 175, per=25.42%, avg=108.78, stdev=24.70, samples=110 iops : min= 6, max= 43, avg=26.83, stdev= 6.15, samples=110 write: IOPS=27, BW=111KiB/s (114kB/s)(6236KiB/55974msec); 0 zone resets clat (usec): min=903, max=873964, avg=16478.65, stdev=24694.59 lat (usec): min=904, max=873966, avg=16480.48, stdev=24694.60 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 2507], 10.00th=[ 3130], 20.00th=[ 4293], | 30.00th=[ 8029], 40.00th=[ 11338], 50.00th=[ 13566], 60.00th=[ 16712], | 70.00th=[ 20317], 80.00th=[ 25297], 90.00th=[ 32113], 95.00th=[ 38011], | 99.00th=[ 51119], 99.50th=[ 62653], 99.90th=[ 89654], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 32, max= 183, per=25.01%, avg=112.05, stdev=32.07, samples=110 iops : min= 8, max= 45, avg=27.65, stdev= 8.02, samples=110 lat (usec) : 250=0.10%, 500=0.26%, 750=0.78%, 1000=0.23% lat (msec) : 2=1.17%, 4=7.52%, 10=14.23%, 20=38.54%, 50=36.04% lat (msec) : 100=1.11%, 1000=0.03% cpu : usr=0.14%, sys=23.09%, ctx=9704, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=429KiB/s (439kB/s), 107KiB/s-108KiB/s (109kB/s-111kB/s), io=23.4MiB (24.6MB), run=55559-56011msec WRITE: bw=449KiB/s (460kB/s), 111KiB/s-114KiB/s (114kB/s-117kB/s), io=24.6MiB (25.7MB), run=55559-56011msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181863: Fri Jan 30 03:10:44 2026 read: IOPS=23, BW=93.6KiB/s (95.9kB/s)(5992KiB/63991msec) clat (msec): min=3, max=855, avg=18.85, stdev=25.62 lat (msec): min=3, max=855, avg=18.86, stdev=25.62 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 29], 90.00th=[ 38], 95.00th=[ 46], | 99.00th=[ 68], 99.50th=[ 77], 99.90th=[ 96], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 24, max= 296, per=25.18%, avg=93.91, stdev=57.24, samples=126 iops : min= 6, max= 74, avg=23.11, stdev=14.37, samples=126 write: IOPS=24, BW=98.4KiB/s (101kB/s)(6296KiB/63991msec); 0 zone resets clat (usec): min=5127, max=98481, avg=22583.05, stdev=14863.58 lat (usec): min=5127, max=98483, avg=22584.22, stdev=14863.53 clat percentiles (usec): | 1.00th=[ 6456], 5.00th=[ 7308], 10.00th=[ 8225], 20.00th=[ 9896], | 30.00th=[12125], 40.00th=[14877], 50.00th=[18220], 60.00th=[22152], | 70.00th=[27657], 80.00th=[34341], 90.00th=[42730], 95.00th=[51643], | 99.00th=[72877], 99.50th=[87557], 99.90th=[96994], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 31, max= 328, per=25.54%, avg=99.59, stdev=58.91, samples=125 iops : min= 7, max= 82, avg=24.53, stdev=14.79, samples=125 lat (msec) : 4=0.29%, 10=26.95%, 20=34.38%, 50=33.50%, 100=4.85% lat (msec) : 1000=0.03% cpu : usr=0.11%, sys=12.99%, ctx=6242, 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=181864: Fri Jan 30 03:10:44 2026 read: IOPS=23, BW=92.6KiB/s (94.8kB/s)(5940KiB/64179msec) clat (msec): min=3, max=864, avg=18.17, stdev=25.71 lat (msec): min=3, max=864, avg=18.17, stdev=25.71 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 26], 90.00th=[ 37], 95.00th=[ 46], | 99.00th=[ 65], 99.50th=[ 73], 99.90th=[ 100], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 8, max= 318, per=24.87%, avg=92.77, stdev=59.41, samples=126 iops : min= 2, max= 79, avg=22.83, stdev=14.93, samples=126 write: IOPS=24, BW=98.9KiB/s (101kB/s)(6348KiB/64179msec); 0 zone resets clat (msec): min=4, max=119, avg=23.32, stdev=15.24 lat (msec): min=4, max=119, avg=23.32, stdev=15.24 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 44], 95.00th=[ 53], | 99.00th=[ 73], 99.50th=[ 82], 99.90th=[ 115], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 31, max= 288, per=25.30%, avg=98.68, stdev=57.78, samples=126 iops : min= 7, max= 72, avg=24.30, stdev=14.47, samples=126 lat (msec) : 4=0.39%, 10=26.33%, 20=34.02%, 50=34.57%, 100=4.56% lat (msec) : 250=0.10%, 1000=0.03% cpu : usr=0.14%, sys=12.79%, ctx=6498, 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=181865: Fri Jan 30 03:10:44 2026 read: IOPS=23, BW=93.9KiB/s (96.2kB/s)(6028KiB/64192msec) clat (usec): min=3221, max=95532, avg=17816.55, stdev=13784.77 lat (usec): min=3222, max=95533, avg=17817.52, stdev=13784.71 clat percentiles (usec): | 1.00th=[ 4359], 5.00th=[ 5145], 10.00th=[ 5735], 20.00th=[ 7177], | 30.00th=[ 9110], 40.00th=[10945], 50.00th=[13566], 60.00th=[16057], | 70.00th=[19268], 80.00th=[25822], 90.00th=[37487], 95.00th=[46400], | 99.00th=[67634], 99.50th=[72877], 99.90th=[94897], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 16, max= 288, per=25.41%, avg=94.79, stdev=59.81, samples=125 iops : min= 4, max= 72, avg=23.33, stdev=15.00, samples=125 write: IOPS=24, BW=97.5KiB/s (99.9kB/s)(6260KiB/64192msec); 0 zone resets clat (msec): min=5, max=870, avg=23.74, stdev=26.38 lat (msec): min=5, max=870, avg=23.74, stdev=26.38 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 35], 90.00th=[ 44], 95.00th=[ 52], | 99.00th=[ 78], 99.50th=[ 95], 99.90th=[ 121], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8, max= 280, per=24.94%, avg=97.28, stdev=55.60, samples=126 iops : min= 2, max= 70, avg=23.95, stdev=13.95, samples=126 lat (msec) : 4=0.36%, 10=26.27%, 20=35.25%, 50=33.20%, 100=4.75% lat (msec) : 250=0.13%, 1000=0.03% cpu : usr=0.11%, sys=12.94%, ctx=6343, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181866: Fri Jan 30 03:10:44 2026 read: IOPS=23, BW=94.0KiB/s (96.3kB/s)(6052KiB/64372msec) clat (usec): min=2570, max=94090, avg=18051.03, stdev=14144.68 lat (usec): min=2570, max=94090, avg=18052.01, stdev=14144.58 clat percentiles (usec): | 1.00th=[ 3458], 5.00th=[ 4948], 10.00th=[ 5669], 20.00th=[ 7046], | 30.00th=[ 8848], 40.00th=[10814], 50.00th=[13173], 60.00th=[15926], | 70.00th=[19530], 80.00th=[27395], 90.00th=[39584], 95.00th=[48497], | 99.00th=[65799], 99.50th=[71828], 99.90th=[88605], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 23, max= 303, per=25.38%, avg=94.68, stdev=57.10, samples=126 iops : min= 5, max= 75, avg=23.30, stdev=14.34, samples=126 write: IOPS=24, BW=96.9KiB/s (99.2kB/s)(6236KiB/64372msec); 0 zone resets clat (msec): min=4, max=869, avg=23.65, stdev=26.27 lat (msec): min=4, max=869, avg=23.65, stdev=26.27 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 28], 80.00th=[ 35], 90.00th=[ 44], 95.00th=[ 53], | 99.00th=[ 74], 99.50th=[ 82], 99.90th=[ 111], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 23, max= 310, per=24.86%, avg=96.95, stdev=59.26, samples=127 iops : min= 5, max= 77, avg=23.87, stdev=14.86, samples=127 lat (msec) : 4=0.88%, 10=27.18%, 20=33.50%, 50=33.17%, 100=5.21% lat (msec) : 250=0.03%, 1000=0.03% cpu : usr=0.11%, sys=12.71%, ctx=6363, 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=373KiB/s (382kB/s), 92.6KiB/s-94.0KiB/s (94.8kB/s-96.3kB/s), io=23.4MiB (24.6MB), run=63991-64372msec WRITE: bw=391KiB/s (400kB/s), 96.9KiB/s-98.9KiB/s (99.2kB/s-101kB/s), io=24.6MiB (25.7MB), run=63991-64372msec 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=181896: Fri Jan 30 03:11:06 2026 read: IOPS=22, BW=361KiB/s (370kB/s)(5920KiB/16386msec) clat (usec): min=191, max=102896, avg=23006.92, stdev=14101.69 lat (usec): min=192, max=102897, avg=23009.27, stdev=14103.24 clat percentiles (usec): | 1.00th=[ 437], 5.00th=[ 1020], 10.00th=[ 9765], 20.00th=[ 13829], | 30.00th=[ 16319], 40.00th=[ 18482], 50.00th=[ 20055], 60.00th=[ 22938], | 70.00th=[ 26608], 80.00th=[ 30802], 90.00th=[ 38536], 95.00th=[ 46924], | 99.00th=[ 77071], 99.50th=[ 82314], 99.90th=[103285], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 190, max= 510, per=24.25%, avg=353.56, stdev=89.96, samples=32 iops : min= 11, max= 31, avg=21.62, stdev= 5.72, samples=32 write: IOPS=24, BW=389KiB/s (398kB/s)(6368KiB/16386msec); 0 zone resets clat (usec): min=1514, max=88335, avg=19660.31, stdev=15169.04 lat (usec): min=1515, max=88336, avg=19662.10, stdev=15168.97 clat percentiles (usec): | 1.00th=[ 1909], 5.00th=[ 3195], 10.00th=[ 4883], 20.00th=[ 6718], | 30.00th=[ 9503], 40.00th=[12649], 50.00th=[15926], 60.00th=[19792], | 70.00th=[24773], 80.00th=[29754], 90.00th=[40109], 95.00th=[49021], | 99.00th=[77071], 99.50th=[82314], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 159, max= 544, per=25.04%, avg=384.19, stdev=108.46, samples=32 iops : min= 9, max= 34, avg=23.53, stdev= 6.90, samples=32 lat (usec) : 250=0.13%, 500=1.04%, 750=1.17% lat (msec) : 2=1.17%, 4=2.99%, 10=15.23%, 20=33.72%, 50=39.97% lat (msec) : 100=4.43%, 250=0.13% cpu : usr=0.14%, sys=20.52%, ctx=2599, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181897: Fri Jan 30 03:11:06 2026 read: IOPS=21, BW=350KiB/s (358kB/s)(5744KiB/16427msec) clat (usec): min=211, max=81711, avg=23348.52, stdev=12585.16 lat (usec): min=212, max=81711, avg=23349.43, stdev=12585.19 clat percentiles (usec): | 1.00th=[ 429], 5.00th=[ 1696], 10.00th=[11338], 20.00th=[14222], | 30.00th=[16319], 40.00th=[18744], 50.00th=[21365], 60.00th=[24511], | 70.00th=[27919], 80.00th=[31065], 90.00th=[39584], 95.00th=[44303], | 99.00th=[67634], 99.50th=[80217], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 136, max= 573, per=23.88%, avg=348.22, stdev=91.99, samples=32 iops : min= 8, max= 35, avg=21.28, stdev= 5.70, samples=32 write: IOPS=24, BW=398KiB/s (408kB/s)(6544KiB/16427msec); 0 zone resets clat (usec): min=1411, max=85370, avg=19463.78, stdev=15291.61 lat (usec): min=1412, max=85372, avg=19473.51, stdev=15289.13 clat percentiles (usec): | 1.00th=[ 2212], 5.00th=[ 3720], 10.00th=[ 4293], 20.00th=[ 5997], | 30.00th=[ 8848], 40.00th=[12780], 50.00th=[15795], 60.00th=[18744], | 70.00th=[22676], 80.00th=[30802], 90.00th=[40633], 95.00th=[48497], | 99.00th=[73925], 99.50th=[77071], 99.90th=[85459], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 95, max= 672, per=25.44%, avg=390.19, stdev=116.10, samples=32 iops : min= 5, max= 42, avg=23.91, stdev= 7.35, samples=32 lat (usec) : 250=0.13%, 500=0.39%, 750=1.69% lat (msec) : 2=0.52%, 4=3.65%, 10=14.84%, 20=33.20%, 50=41.41% lat (msec) : 100=4.17% cpu : usr=0.10%, sys=21.07%, ctx=2638, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181898: Fri Jan 30 03:11:06 2026 read: IOPS=24, BW=385KiB/s (395kB/s)(6256KiB/16229msec) clat (usec): min=173, max=72051, avg=23234.10, stdev=12603.72 lat (usec): min=174, max=72052, avg=23235.31, stdev=12603.89 clat percentiles (usec): | 1.00th=[ 227], 5.00th=[ 685], 10.00th=[10814], 20.00th=[13960], | 30.00th=[16909], 40.00th=[18744], 50.00th=[21365], 60.00th=[24511], | 70.00th=[27395], 80.00th=[31851], 90.00th=[39060], 95.00th=[47449], | 99.00th=[62129], 99.50th=[70779], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 159, max= 640, per=26.50%, avg=386.31, stdev=99.88, samples=32 iops : min= 9, max= 40, avg=23.66, stdev= 6.37, samples=32 write: IOPS=23, BW=372KiB/s (381kB/s)(6032KiB/16229msec); 0 zone resets clat (usec): min=1166, max=90316, avg=18618.08, stdev=14057.77 lat (usec): min=1168, max=90317, avg=18620.15, stdev=14057.62 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 3359], 10.00th=[ 4359], 20.00th=[ 5997], | 30.00th=[10159], 40.00th=[12649], 50.00th=[15795], 60.00th=[19792], | 70.00th=[23200], 80.00th=[27919], 90.00th=[36439], 95.00th=[44303], | 99.00th=[73925], 99.50th=[82314], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 159, max= 576, per=23.92%, avg=366.97, stdev=106.97, samples=32 iops : min= 9, max= 36, avg=22.47, stdev= 6.70, samples=32 lat (usec) : 250=0.52%, 500=1.30%, 750=0.78%, 1000=0.13% lat (msec) : 2=1.17%, 4=2.99%, 10=12.24%, 20=33.85%, 50=43.10% lat (msec) : 100=3.91% cpu : usr=0.10%, sys=20.72%, ctx=2593, 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=181899: Fri Jan 30 03:11:06 2026 read: IOPS=23, BW=381KiB/s (390kB/s)(6032KiB/15839msec) clat (usec): min=207, max=83352, avg=22264.19, stdev=14072.63 lat (usec): min=208, max=83353, avg=22265.59, stdev=14072.41 clat percentiles (usec): | 1.00th=[ 241], 5.00th=[ 578], 10.00th=[ 8586], 20.00th=[12649], | 30.00th=[15139], 40.00th=[17695], 50.00th=[20579], 60.00th=[23462], | 70.00th=[26608], 80.00th=[30278], 90.00th=[38011], 95.00th=[50594], | 99.00th=[77071], 99.50th=[79168], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 191, max= 573, per=25.96%, avg=378.45, stdev=90.09, samples=31 iops : min= 11, max= 35, avg=23.19, stdev= 5.73, samples=31 write: IOPS=24, BW=395KiB/s (404kB/s)(6256KiB/15839msec); 0 zone resets clat (usec): min=1290, max=76678, avg=18614.40, stdev=14272.64 lat (usec): min=1291, max=76679, avg=18616.22, stdev=14272.63 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 3261], 10.00th=[ 4228], 20.00th=[ 5735], | 30.00th=[ 8717], 40.00th=[12125], 50.00th=[14877], 60.00th=[17695], | 70.00th=[23725], 80.00th=[28967], 90.00th=[38011], 95.00th=[46400], | 99.00th=[70779], 99.50th=[76022], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 190, max= 670, per=25.66%, avg=393.68, stdev=114.59, samples=31 iops : min= 11, max= 41, avg=24.13, stdev= 7.14, samples=31 lat (usec) : 250=0.52%, 500=1.17%, 750=1.95%, 1000=0.65% lat (msec) : 2=1.04%, 4=4.04%, 10=13.67%, 20=33.33%, 50=39.32% lat (msec) : 100=4.30% cpu : usr=0.13%, sys=20.67%, ctx=2499, 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=1458KiB/s (1493kB/s), 350KiB/s-385KiB/s (358kB/s-395kB/s), io=23.4MiB (24.5MB), run=15839-16427msec WRITE: bw=1534KiB/s (1571kB/s), 372KiB/s-398KiB/s (381kB/s-408kB/s), io=24.6MiB (25.8MB), run=15839-16427msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181892: Fri Jan 30 03:11:09 2026 read: IOPS=19, BW=306KiB/s (313kB/s)(5920KiB/19354msec) clat (usec): min=3754, max=98526, avg=21349.06, stdev=16078.35 lat (usec): min=3755, max=98527, avg=21349.97, stdev=16078.30 clat percentiles (usec): | 1.00th=[ 4359], 5.00th=[ 5997], 10.00th=[ 6783], 20.00th=[ 8225], | 30.00th=[10814], 40.00th=[13698], 50.00th=[15664], 60.00th=[19006], | 70.00th=[24511], 80.00th=[33424], 90.00th=[43779], 95.00th=[53740], | 99.00th=[90702], 99.50th=[94897], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 63, max= 832, per=23.81%, avg=294.47, stdev=166.37, samples=38 iops : min= 3, max= 52, avg=18.00, stdev=10.54, samples=38 write: IOPS=20, BW=329KiB/s (337kB/s)(6368KiB/19354msec); 0 zone resets clat (msec): min=5, max=132, avg=28.50, stdev=19.47 lat (msec): min=5, max=132, avg=28.50, stdev=19.47 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 42], 90.00th=[ 54], 95.00th=[ 66], | 99.00th=[ 96], 99.50th=[ 114], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 126, max= 924, per=24.72%, avg=321.87, stdev=170.82, samples=38 iops : min= 7, max= 57, avg=19.71, stdev=10.78, samples=38 lat (msec) : 4=0.13%, 10=17.58%, 20=34.51%, 50=38.02%, 100=9.38% lat (msec) : 250=0.39% cpu : usr=0.10%, sys=10.22%, ctx=1582, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181893: Fri Jan 30 03:11:09 2026 read: IOPS=18, BW=299KiB/s (306kB/s)(5744KiB/19194msec) clat (usec): min=4680, max=99745, avg=21089.76, stdev=15122.35 lat (usec): min=4681, max=99746, avg=21090.65, stdev=15122.40 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 31], 90.00th=[ 42], 95.00th=[ 55], | 99.00th=[ 71], 99.50th=[ 90], 99.90th=[ 101], 99.95th=[ 101], | 99.99th=[ 101] bw ( KiB/s): min= 63, max= 736, per=24.13%, avg=298.47, stdev=146.60, samples=38 iops : min= 3, max= 46, avg=18.24, stdev= 9.30, samples=38 write: IOPS=21, BW=341KiB/s (349kB/s)(6544KiB/19194msec); 0 zone resets clat (msec): min=6, max=113, avg=28.29, stdev=19.68 lat (msec): min=6, max=113, avg=28.29, stdev=19.68 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 40], 90.00th=[ 54], 95.00th=[ 69], | 99.00th=[ 103], 99.50th=[ 106], 99.90th=[ 114], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 159, max= 1051, per=26.14%, avg=340.39, stdev=189.87, samples=38 iops : min= 9, max= 65, avg=20.87, stdev=11.94, samples=38 lat (msec) : 10=14.84%, 20=38.41%, 50=37.89%, 100=8.07%, 250=0.78% cpu : usr=0.13%, sys=10.57%, ctx=1664, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181894: Fri Jan 30 03:11:09 2026 read: IOPS=20, BW=327KiB/s (335kB/s)(6256KiB/19129msec) clat (usec): min=4461, max=91787, avg=21501.57, stdev=15722.60 lat (usec): min=4462, max=91787, avg=21502.53, stdev=15722.63 clat percentiles (usec): | 1.00th=[ 5145], 5.00th=[ 6521], 10.00th=[ 7504], 20.00th=[ 9372], | 30.00th=[11731], 40.00th=[13566], 50.00th=[15926], 60.00th=[19268], | 70.00th=[23987], 80.00th=[31065], 90.00th=[44827], 95.00th=[53216], | 99.00th=[72877], 99.50th=[90702], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 95, max= 960, per=26.27%, avg=324.92, stdev=193.90, samples=37 iops : min= 5, max= 60, avg=19.89, stdev=12.23, samples=37 write: IOPS=19, BW=315KiB/s (323kB/s)(6032KiB/19129msec); 0 zone resets clat (msec): min=6, max=116, avg=28.22, stdev=17.99 lat (msec): min=6, max=116, avg=28.22, stdev=17.99 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 42], 90.00th=[ 53], 95.00th=[ 61], | 99.00th=[ 92], 99.50th=[ 114], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 63, max= 896, per=23.36%, avg=304.19, stdev=148.99, samples=37 iops : min= 3, max= 56, avg=18.59, stdev= 9.44, samples=37 lat (msec) : 10=15.36%, 20=37.76%, 50=37.63%, 100=8.85%, 250=0.39% cpu : usr=0.09%, sys=10.53%, ctx=1624, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181895: Fri Jan 30 03:11:09 2026 read: IOPS=19, BW=313KiB/s (321kB/s)(6032KiB/19265msec) clat (usec): min=4552, max=96339, avg=21221.72, stdev=15589.09 lat (usec): min=4553, max=96340, avg=21222.73, stdev=15589.02 clat percentiles (usec): | 1.00th=[ 4817], 5.00th=[ 6128], 10.00th=[ 6718], 20.00th=[ 8586], | 30.00th=[11207], 40.00th=[13698], 50.00th=[16057], 60.00th=[18482], | 70.00th=[22938], 80.00th=[33424], 90.00th=[44827], 95.00th=[53740], | 99.00th=[67634], 99.50th=[81265], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 95, max= 896, per=24.96%, avg=308.71, stdev=180.22, samples=38 iops : min= 5, max= 56, avg=18.89, stdev=11.35, samples=38 write: IOPS=20, BW=325KiB/s (333kB/s)(6256KiB/19265msec); 0 zone resets clat (msec): min=6, max=131, avg=28.73, stdev=20.15 lat (msec): min=6, max=131, avg=28.73, stdev=20.15 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 43], 90.00th=[ 57], 95.00th=[ 70], | 99.00th=[ 100], 99.50th=[ 118], 99.90th=[ 132], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 159, max= 864, per=24.73%, avg=321.95, stdev=175.25, samples=38 iops : min= 9, max= 54, avg=19.71, stdev=11.10, samples=38 lat (msec) : 10=16.93%, 20=37.50%, 50=34.90%, 100=10.29%, 250=0.39% cpu : usr=0.07%, sys=10.21%, ctx=1593, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1238KiB/s (1267kB/s), 299KiB/s-327KiB/s (306kB/s-335kB/s), io=23.4MiB (24.5MB), run=19129-19354msec WRITE: bw=1302KiB/s (1333kB/s), 315KiB/s-341KiB/s (323kB/s-349kB/s), io=24.6MiB (25.8MB), run=19129-19354msec 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=181912: Fri Jan 30 03:11:17 2026 read: IOPS=3, BW=3312KiB/s (3392kB/s)(7168KiB/2164msec) clat (usec): min=1016, max=196704, avg=118405.93, stdev=59525.67 lat (usec): min=1017, max=196705, avg=118407.15, stdev=59525.61 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1020], 10.00th=[ 1020], 20.00th=[106431], | 30.00th=[117965], 40.00th=[117965], 50.00th=[122160], 60.00th=[139461], | 70.00th=[139461], 80.00th=[145753], 90.00th=[196084], 95.00th=[196084], | 99.00th=[196084], 99.50th=[196084], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 2048, max= 5269, per=59.43%, avg=3772.33, stdev=1622.52, samples=3 iops : min= 2, max= 5, avg= 3.33, stdev= 1.53, samples=3 write: IOPS=2, BW=2366KiB/s (2423kB/s)(5120KiB/2164msec); 0 zone resets clat (msec): min=115, max=515, avg=250.22, stdev=153.62 lat (msec): min=115, max=515, avg=250.28, stdev=153.61 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 116], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 203], 60.00th=[ 203], | 70.00th=[ 222], 80.00th=[ 222], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 2000, max= 6144, per=45.82%, avg=4072.00, stdev=2930.25, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 lat (msec) : 2=8.33%, 250=83.33%, 750=8.33% cpu : usr=0.00%, sys=52.84%, ctx=854, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181913: Fri Jan 30 03:11:17 2026 read: IOPS=0, BW=635KiB/s (650kB/s)(2048KiB/3226msec) clat (usec): min=983, max=109214, avg=55099.25, stdev=76530.89 lat (usec): min=985, max=109217, avg=55101.14, stdev=76531.76 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 988], 10.00th=[ 988], 20.00th=[ 988], | 30.00th=[ 988], 40.00th=[ 988], 50.00th=[ 988], 60.00th=[109577], | 70.00th=[109577], 80.00th=[109577], 90.00th=[109577], 95.00th=[109577], | 99.00th=[109577], 99.50th=[109577], 99.90th=[109577], 99.95th=[109577], | 99.99th=[109577] bw ( KiB/s): min= 1787, max= 2048, per=30.21%, avg=1917.50, stdev=184.55, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3174KiB/s (3250kB/s)(10.0MiB/3226msec); 0 zone resets clat (msec): min=94, max=713, avg=309.41, stdev=205.22 lat (msec): min=94, max=713, avg=309.49, stdev=205.22 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 150], | 30.00th=[ 157], 40.00th=[ 174], 50.00th=[ 211], 60.00th=[ 245], | 70.00th=[ 321], 80.00th=[ 481], 90.00th=[ 550], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1787, max= 4096, per=29.74%, avg=2642.83, stdev=1047.92, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.17, samples=6 lat (usec) : 1000=8.33% lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=16.67% cpu : usr=0.03%, sys=41.33%, ctx=396, 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=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=181914: Fri Jan 30 03:11:17 2026 read: IOPS=2, BW=2403KiB/s (2460kB/s)(6144KiB/2557msec) clat (usec): min=819, max=225573, avg=114628.19, stdev=93580.92 lat (usec): min=821, max=225573, avg=114629.36, stdev=93580.60 clat percentiles (usec): | 1.00th=[ 824], 5.00th=[ 824], 10.00th=[ 824], 20.00th=[ 906], | 30.00th=[ 906], 40.00th=[128451], 50.00th=[128451], 60.00th=[158335], | 70.00th=[173016], 80.00th=[173016], 90.00th=[225444], 95.00th=[225444], | 99.00th=[225444], 99.50th=[225444], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 2048, max= 6144, per=64.52%, avg=4096.00, stdev=2896.31, samples=2 iops : min= 2, max= 6, avg= 4.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2403KiB/s (2460kB/s)(6144KiB/2557msec); 0 zone resets clat (msec): min=186, max=557, avg=284.05, stdev=138.76 lat (msec): min=186, max=557, avg=284.12, stdev=138.77 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 213], 50.00th=[ 213], 60.00th=[ 249], | 70.00th=[ 288], 80.00th=[ 288], 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= 1787, max= 4096, per=27.94%, avg=2482.75, stdev=1081.46, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (usec) : 1000=16.67% lat (msec) : 250=66.67%, 500=8.33%, 750=8.33% cpu : usr=0.04%, sys=45.07%, ctx=607, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181915: Fri Jan 30 03:11:17 2026 read: IOPS=1, BW=1800KiB/s (1843kB/s)(5120KiB/2844msec) clat (usec): min=871, max=225079, avg=118819.72, stdev=81147.50 lat (usec): min=873, max=225080, avg=118821.04, stdev=81147.50 clat percentiles (usec): | 1.00th=[ 873], 5.00th=[ 873], 10.00th=[ 873], 20.00th=[ 873], | 30.00th=[ 95945], 40.00th=[ 95945], 50.00th=[135267], 60.00th=[135267], | 70.00th=[137364], 80.00th=[137364], 90.00th=[225444], 95.00th=[225444], | 99.00th=[225444], 99.50th=[225444], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2520KiB/s (2581kB/s)(7168KiB/2844msec); 0 zone resets clat (msec): min=134, max=531, avg=309.61, stdev=165.72 lat (msec): min=134, max=531, avg=309.68, stdev=165.71 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 138], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 243], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 485], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 2000, max= 6144, per=45.91%, avg=4080.00, stdev=2072.05, samples=3 iops : min= 1, max= 6, avg= 3.67, stdev= 2.52, samples=3 lat (usec) : 1000=8.33% lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 750=8.33% cpu : usr=0.11%, sys=40.77%, ctx=529, 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=6348KiB/s (6501kB/s), 635KiB/s-3312KiB/s (650kB/s-3392kB/s), io=20.0MiB (20.0MB), run=2164-3226msec WRITE: bw=8888KiB/s (9101kB/s), 2366KiB/s-3174KiB/s (2423kB/s-3250kB/s), io=28.0MiB (29.4MB), run=2164-3226msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181908: Fri Jan 30 03:11:18 2026 read: IOPS=2, BW=3023KiB/s (3096kB/s)(7168KiB/2371msec) clat (msec): min=55, max=452, avg=198.11, stdev=166.04 lat (msec): min=55, max=452, avg=198.11, stdev=166.04 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 56], 10.00th=[ 56], 20.00th=[ 75], | 30.00th=[ 94], 40.00th=[ 94], 50.00th=[ 122], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 418], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 1865, max= 5919, per=51.72%, avg=3273.00, stdev=2293.08, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=2, BW=2159KiB/s (2211kB/s)(5120KiB/2371msec); 0 zone resets clat (msec): min=61, max=352, avg=176.45, stdev=109.50 lat (msec): min=61, max=352, avg=176.52, stdev=109.51 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 62], | 30.00th=[ 121], 40.00th=[ 121], 50.00th=[ 157], 60.00th=[ 157], | 70.00th=[ 192], 80.00th=[ 192], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 1973, max= 6023, per=45.12%, avg=3998.00, stdev=2863.78, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 100=33.33%, 250=41.67%, 500=25.00% cpu : usr=0.00%, sys=18.31%, ctx=120, 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=181909: Fri Jan 30 03:11:18 2026 read: IOPS=0, BW=647KiB/s (663kB/s)(2048KiB/3165msec) clat (msec): min=43, max=110, avg=77.28, stdev=47.25 lat (msec): min=43, max=110, avg=77.28, stdev=47.25 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 44], 10.00th=[ 44], 20.00th=[ 44], | 30.00th=[ 44], 40.00th=[ 44], 50.00th=[ 44], 60.00th=[ 111], | 70.00th=[ 111], 80.00th=[ 111], 90.00th=[ 111], 95.00th=[ 111], | 99.00th=[ 111], 99.50th=[ 111], 99.90th=[ 111], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 1822, max= 2007, per=30.25%, avg=1914.50, stdev=130.81, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3235KiB/s (3313kB/s)(10.0MiB/3165msec); 0 zone resets clat (msec): min=65, max=719, avg=299.23, stdev=234.17 lat (msec): min=66, max=719, avg=299.30, stdev=234.18 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 128], | 30.00th=[ 165], 40.00th=[ 169], 50.00th=[ 180], 60.00th=[ 203], | 70.00th=[ 259], 80.00th=[ 401], 90.00th=[ 701], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1822, max= 4096, per=33.05%, avg=2928.17, stdev=1077.93, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.33, samples=6 lat (msec) : 50=8.33%, 100=8.33%, 250=50.00%, 500=16.67%, 750=16.67% cpu : usr=0.03%, sys=19.44%, ctx=235, 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=181910: Fri Jan 30 03:11:18 2026 read: IOPS=1, BW=1899KiB/s (1944kB/s)(6144KiB/3236msec) clat (msec): min=44, max=606, avg=266.11, stdev=195.80 lat (msec): min=44, max=606, avg=266.11, stdev=195.80 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 44], 10.00th=[ 44], 20.00th=[ 127], | 30.00th=[ 127], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 241], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1831, max= 4096, per=39.38%, avg=2492.25, stdev=1072.97, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1899KiB/s (1944kB/s)(6144KiB/3236msec); 0 zone resets clat (msec): min=108, max=408, avg=262.78, stdev=116.85 lat (msec): min=108, max=408, avg=262.84, stdev=116.85 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 284], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 1831, max= 3650, per=26.81%, avg=2375.50, stdev=854.42, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 50=8.33%, 250=50.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=14.65%, ctx=82, 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=181911: Fri Jan 30 03:11:18 2026 read: IOPS=2, BW=2071KiB/s (2121kB/s)(5120KiB/2472msec) clat (msec): min=61, max=476, avg=203.09, stdev=184.33 lat (msec): min=61, max=476, avg=203.09, stdev=184.33 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 62], | 30.00th=[ 81], 40.00th=[ 81], 50.00th=[ 85], 60.00th=[ 85], | 70.00th=[ 313], 80.00th=[ 313], 90.00th=[ 477], 95.00th=[ 477], | 99.00th=[ 477], 99.50th=[ 477], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 2035, max= 6023, per=63.67%, avg=4029.00, stdev=2819.94, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2900KiB/s (2969kB/s)(7168KiB/2472msec); 0 zone resets clat (msec): min=72, max=338, avg=196.69, stdev=123.30 lat (msec): min=72, max=338, avg=196.77, stdev=123.29 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 88], | 30.00th=[ 91], 40.00th=[ 91], 50.00th=[ 148], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 330], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 1841, max= 5919, per=43.79%, avg=3880.00, stdev=2883.58, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 100=50.00%, 250=8.33%, 500=41.67% cpu : usr=0.04%, sys=18.54%, ctx=111, 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=6329KiB/s (6481kB/s), 647KiB/s-3023KiB/s (663kB/s-3096kB/s), io=20.0MiB (20.0MB), run=2371-3236msec WRITE: bw=8860KiB/s (9073kB/s), 1899KiB/s-3235KiB/s (1944kB/s-3313kB/s), io=28.0MiB (29.4MB), run=2371-3236msec 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=181921: Fri Jan 30 03:11:25 2026 read: IOPS=1, BW=7006KiB/s (7174kB/s)(12.0MiB/1754msec) clat (msec): min=401, max=638, avg=535.20, stdev=121.24 lat (msec): min=401, max=638, avg=535.20, stdev=121.24 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, 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=0.00%, sys=24.53%, ctx=110, 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=181922: Fri Jan 30 03:11:25 2026 read: IOPS=0, BW=1829KiB/s (1873kB/s)(4096KiB/2239msec) clat (nsec): min=1609.9M, max=1609.9M, avg=1609947768.00, stdev= 0.00 lat (nsec): min=1609.9M, max=1609.9M, avg=1609949462.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1603], 5.00th=[ 1603], 10.00th=[ 1603], 20.00th=[ 1603], | 30.00th=[ 1603], 40.00th=[ 1603], 50.00th=[ 1603], 60.00th=[ 1603], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3659KiB/s (3747kB/s)(8192KiB/2239msec); 0 zone resets clat (msec): min=164, max=358, avg=261.52, stdev=137.30 lat (msec): min=164, max=358, avg=261.96, stdev=137.16 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 8192, max= 8192, per=57.18%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.32%, ctx=75, 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=181923: Fri Jan 30 03:11:25 2026 write: IOPS=1, BW=5962KiB/s (6105kB/s)(12.0MiB/2061msec); 0 zone resets clat (msec): min=170, max=1231, avg=656.14, stdev=536.01 lat (msec): min=170, max=1231, avg=656.49, stdev=535.97 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 1234], 80.00th=[ 1234], 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= 8192, max= 8192, per=57.18%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=19.42%, ctx=95, 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=181924: Fri Jan 30 03:11:25 2026 write: IOPS=1, BW=5373KiB/s (5502kB/s)(12.0MiB/2287msec); 0 zone resets clat (msec): min=503, max=960, avg=701.71, stdev=234.44 lat (msec): min=503, max=961, avg=702.09, stdev=234.52 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8175, max= 8192, per=57.12%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.13%, sys=17.76%, ctx=108, 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=7318KiB/s (7493kB/s), 1829KiB/s-7006KiB/s (1873kB/s-7174kB/s), io=16.0MiB (16.8MB), run=1754-2239msec WRITE: bw=13.0MiB/s (14.7MB/s), 3659KiB/s-5962KiB/s (3747kB/s-6105kB/s), io=32.0MiB (33.6MB), run=2061-2287msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181925: Fri Jan 30 03:11:25 2026 read: IOPS=1, BW=7802KiB/s (7989kB/s)(12.0MiB/1575msec) clat (msec): min=426, max=565, avg=512.44, stdev=74.86 lat (msec): min=426, max=565, avg=512.44, stdev=74.86 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 6224, max= 7953, per=89.22%, avg=7088.50, stdev=1222.59, 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=52.80%, ctx=2604, 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=181926: Fri Jan 30 03:11:25 2026 read: IOPS=0, BW=1986KiB/s (2034kB/s)(4096KiB/2062msec) clat (nsec): min=563487k, max=563487k, avg=563487005.00, stdev= 0.00 lat (nsec): min=563490k, max=563490k, avg=563489525.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 5919, max= 5919, per=74.50%, avg=5919.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3973KiB/s (4068kB/s)(8192KiB/2062msec); 0 zone resets clat (msec): min=690, max=750, avg=720.28, stdev=42.78 lat (msec): min=690, max=750, avg=720.58, stdev=42.82 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 8175, max= 8175, per=57.76%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=21.88%, ctx=448, 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=181927: Fri Jan 30 03:11:25 2026 write: IOPS=1, BW=5308KiB/s (5435kB/s)(12.0MiB/2315msec); 0 zone resets clat (msec): min=70, max=1810, avg=759.97, stdev=924.90 lat (msec): min=70, max=1811, avg=760.34, stdev=924.98 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 71], | 30.00th=[ 71], 40.00th=[ 401], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8192, max= 8192, per=57.88%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.09%, sys=8.38%, ctx=45, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181928: Fri Jan 30 03:11:25 2026 write: IOPS=1, BW=5985KiB/s (6129kB/s)(12.0MiB/2053msec); 0 zone resets clat (msec): min=224, max=1321, avg=659.79, stdev=582.80 lat (msec): min=224, max=1322, avg=660.22, stdev=582.82 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 435], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 5876, max= 7953, per=48.85%, avg=6914.50, stdev=1468.66, 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=0.10%, sys=21.05%, ctx=133, 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=7946KiB/s (8136kB/s), 1986KiB/s-7802KiB/s (2034kB/s-7989kB/s), io=16.0MiB (16.8MB), run=1575-2062msec WRITE: bw=13.8MiB/s (14.5MB/s), 3973KiB/s-5985KiB/s (4068kB/s-6129kB/s), io=32.0MiB (33.6MB), run=2053-2315msec