== sanity test 398b: DIO and buffer IO race ============== 16:55:07 (1784235307) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.77554 s, 18.1 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=189205: Thu Jul 16 16:56:08 2026 read: IOPS=28, BW=114KiB/s (117kB/s)(5992KiB/52492msec) clat (usec): min=49, max=724683, avg=18813.18, stdev=20617.01 lat (usec): min=50, max=724683, avg=18813.91, stdev=20617.01 clat percentiles (usec): | 1.00th=[ 109], 5.00th=[ 7439], 10.00th=[ 8979], 20.00th=[ 10945], | 30.00th=[ 12649], 40.00th=[ 14615], 50.00th=[ 16712], 60.00th=[ 19006], | 70.00th=[ 21365], 80.00th=[ 24511], 90.00th=[ 30278], 95.00th=[ 35914], | 99.00th=[ 53216], 99.50th=[ 58459], 99.90th=[ 70779], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 13, max= 184, per=25.15%, avg=113.92, stdev=31.04, samples=104 iops : min= 3, max= 46, avg=28.10, stdev= 7.81, samples=104 write: IOPS=29, BW=120KiB/s (123kB/s)(6296KiB/52492msec); 0 zone resets clat (usec): min=671, max=76815, avg=15317.37, stdev=11289.72 lat (usec): min=671, max=76815, avg=15318.15, stdev=11289.80 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 2868], 10.00th=[ 3458], 20.00th=[ 4883], | 30.00th=[ 7963], 40.00th=[10290], 50.00th=[12780], 60.00th=[15533], | 70.00th=[19006], 80.00th=[23462], 90.00th=[31065], 95.00th=[36963], | 99.00th=[50594], 99.50th=[54264], 99.90th=[67634], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 40, max= 222, per=25.53%, avg=121.03, stdev=35.45, samples=103 iops : min= 10, max= 55, avg=29.87, stdev= 8.90, samples=103 lat (usec) : 50=0.03%, 100=0.33%, 250=0.78%, 500=0.03%, 750=0.10% lat (usec) : 1000=0.29% lat (msec) : 2=0.55%, 4=6.74%, 10=18.29%, 20=41.67%, 50=30.01% lat (msec) : 100=1.14%, 750=0.03% cpu : usr=0.09%, sys=26.22%, ctx=9799, 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=189206: Thu Jul 16 16:56:08 2026 read: IOPS=28, BW=114KiB/s (117kB/s)(5940KiB/52068msec) clat (usec): min=72, max=106426, avg=18699.96, stdev=10074.49 lat (usec): min=74, max=106427, avg=18702.24, stdev=10077.51 clat percentiles (usec): | 1.00th=[ 122], 5.00th=[ 7767], 10.00th=[ 9110], 20.00th=[ 10945], | 30.00th=[ 12518], 40.00th=[ 14615], 50.00th=[ 16581], 60.00th=[ 19006], | 70.00th=[ 21627], 80.00th=[ 25035], 90.00th=[ 31327], 95.00th=[ 37487], | 99.00th=[ 51119], 99.50th=[ 54789], 99.90th=[ 91751], 99.95th=[106431], | 99.99th=[106431] bw ( KiB/s): min= 6, max= 200, per=25.23%, avg=114.31, stdev=34.51, samples=103 iops : min= 1, max= 50, avg=28.19, stdev= 8.67, samples=103 write: IOPS=30, BW=122KiB/s (125kB/s)(6348KiB/52068msec); 0 zone resets clat (usec): min=810, max=720431, avg=15176.38, stdev=20968.05 lat (usec): min=811, max=720431, avg=15177.71, stdev=20968.25 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 2900], 10.00th=[ 3359], 20.00th=[ 4490], | 30.00th=[ 6915], 40.00th=[ 9634], 50.00th=[ 11994], 60.00th=[ 15008], | 70.00th=[ 18482], 80.00th=[ 23462], 90.00th=[ 30540], 95.00th=[ 35390], | 99.00th=[ 51119], 99.50th=[ 62129], 99.90th=[ 94897], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 48, max= 216, per=25.97%, avg=123.08, stdev=36.56, samples=102 iops : min= 12, max= 54, avg=30.38, stdev= 9.23, samples=102 lat (usec) : 100=0.20%, 250=0.62%, 500=0.03%, 1000=0.16% lat (msec) : 2=0.68%, 4=7.91%, 10=18.68%, 20=39.94%, 50=30.70% lat (msec) : 100=1.01%, 250=0.03%, 750=0.03% cpu : usr=0.11%, sys=26.11%, ctx=9675, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189207: Thu Jul 16 16:56:08 2026 read: IOPS=28, BW=114KiB/s (117kB/s)(6028KiB/52960msec) clat (usec): min=29, max=720930, avg=19165.38, stdev=20741.90 lat (usec): min=30, max=720930, avg=19166.18, stdev=20741.89 clat percentiles (usec): | 1.00th=[ 133], 5.00th=[ 7701], 10.00th=[ 8979], 20.00th=[ 10945], | 30.00th=[ 12518], 40.00th=[ 14746], 50.00th=[ 16909], 60.00th=[ 19268], | 70.00th=[ 21890], 80.00th=[ 25035], 90.00th=[ 31065], 95.00th=[ 36963], | 99.00th=[ 48497], 99.50th=[ 64226], 99.90th=[116917], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 63, max= 200, per=25.34%, avg=114.79, stdev=28.85, samples=104 iops : min= 15, max= 50, avg=28.32, stdev= 7.33, samples=104 write: IOPS=29, BW=118KiB/s (121kB/s)(6260KiB/52960msec); 0 zone resets clat (usec): min=748, max=75107, avg=15263.50, stdev=11009.82 lat (usec): min=748, max=75108, avg=15264.39, stdev=11009.86 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 2868], 10.00th=[ 3392], 20.00th=[ 4883], | 30.00th=[ 8160], 40.00th=[10814], 50.00th=[12649], 60.00th=[15270], | 70.00th=[19268], 80.00th=[23987], 90.00th=[31065], 95.00th=[35390], | 99.00th=[51119], 99.50th=[57410], 99.90th=[68682], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 19, max= 200, per=24.84%, avg=117.76, stdev=37.25, samples=105 iops : min= 4, max= 50, avg=29.06, stdev= 9.39, samples=105 lat (usec) : 50=0.07%, 100=0.16%, 250=0.68%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=0.65%, 4=7.06%, 10=17.19%, 20=41.80%, 50=31.15% lat (msec) : 100=0.94%, 250=0.03%, 750=0.03% cpu : usr=0.11%, sys=25.83%, ctx=9897, 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=189208: Thu Jul 16 16:56:08 2026 read: IOPS=28, BW=114KiB/s (117kB/s)(6052KiB/52922msec) clat (usec): min=64, max=78140, avg=18263.64, stdev=9428.87 lat (usec): min=65, max=78141, avg=18264.32, stdev=9428.92 clat percentiles (usec): | 1.00th=[ 113], 5.00th=[ 7701], 10.00th=[ 9241], 20.00th=[10814], | 30.00th=[12518], 40.00th=[14484], 50.00th=[16581], 60.00th=[18744], | 70.00th=[21627], 80.00th=[24511], 90.00th=[29492], 95.00th=[35390], | 99.00th=[52167], 99.50th=[57934], 99.90th=[65274], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 48, max= 192, per=25.47%, avg=115.39, stdev=32.56, samples=104 iops : min= 12, max= 48, avg=28.47, stdev= 8.23, samples=104 write: IOPS=29, BW=118KiB/s (121kB/s)(6236KiB/52922msec); 0 zone resets clat (usec): min=755, max=730110, avg=16091.98, stdev=21701.41 lat (usec): min=756, max=730111, avg=16092.75, stdev=21701.43 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 2835], 10.00th=[ 3326], 20.00th=[ 4686], | 30.00th=[ 8029], 40.00th=[ 10421], 50.00th=[ 12518], 60.00th=[ 15664], | 70.00th=[ 19530], 80.00th=[ 24773], 90.00th=[ 32113], 95.00th=[ 39060], | 99.00th=[ 56361], 99.50th=[ 62653], 99.90th=[ 88605], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 47, max= 208, per=25.02%, avg=118.62, stdev=32.42, samples=104 iops : min= 11, max= 52, avg=29.28, stdev= 8.14, samples=104 lat (usec) : 100=0.33%, 250=0.85%, 1000=0.23% lat (msec) : 2=0.68%, 4=6.90%, 10=17.15%, 20=41.37%, 50=30.99% lat (msec) : 100=1.46%, 750=0.03% cpu : usr=0.07%, sys=25.88%, ctx=9890, 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=453KiB/s (464kB/s), 114KiB/s-114KiB/s (117kB/s-117kB/s), io=23.4MiB (24.6MB), run=52068-52960msec WRITE: bw=475KiB/s (486kB/s), 118KiB/s-122KiB/s (121kB/s-125kB/s), io=24.6MiB (25.7MB), run=52068-52960msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189210: Thu Jul 16 16:56:17 2026 read: IOPS=24, BW=98.7KiB/s (101kB/s)(5992KiB/60737msec) clat (msec): min=3, max=732, avg=17.31, stdev=22.06 lat (msec): min=3, max=732, avg=17.31, stdev=22.06 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 35], 95.00th=[ 42], | 99.00th=[ 58], 99.50th=[ 66], 99.90th=[ 95], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 23, max= 311, per=25.24%, avg=99.18, stdev=59.15, samples=119 iops : min= 5, max= 77, avg=24.45, stdev=14.83, samples=119 write: IOPS=25, BW=104KiB/s (106kB/s)(6296KiB/60737msec); 0 zone resets clat (msec): min=4, max=125, avg=22.01, stdev=14.85 lat (msec): min=4, max=125, avg=22.01, stdev=14.85 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 34], 90.00th=[ 41], 95.00th=[ 50], | 99.00th=[ 74], 99.50th=[ 81], 99.90th=[ 117], 99.95th=[ 126], | 99.99th=[ 126] bw ( KiB/s): min= 39, max= 344, per=25.29%, avg=103.94, stdev=59.32, samples=119 iops : min= 9, max= 86, avg=25.65, stdev=14.87, samples=119 lat (msec) : 4=0.29%, 10=28.81%, 20=34.34%, 50=33.04%, 100=3.39% lat (msec) : 250=0.10%, 750=0.03% cpu : usr=0.08%, sys=14.81%, ctx=6497, 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=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=189211: Thu Jul 16 16:56:17 2026 read: IOPS=24, BW=97.3KiB/s (99.7kB/s)(5940KiB/61022msec) clat (msec): min=2, max=723, avg=17.43, stdev=22.19 lat (msec): min=2, max=723, avg=17.43, stdev=22.19 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 25], 90.00th=[ 36], 95.00th=[ 45], | 99.00th=[ 61], 99.50th=[ 66], 99.90th=[ 90], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 16, max= 344, per=24.91%, avg=97.88, stdev=59.90, samples=120 iops : min= 4, max= 86, avg=24.13, stdev=15.00, samples=120 write: IOPS=26, BW=104KiB/s (107kB/s)(6348KiB/61022msec); 0 zone resets clat (msec): min=4, max=124, avg=22.04, stdev=14.48 lat (msec): min=4, max=124, avg=22.04, stdev=14.48 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 33], 90.00th=[ 42], 95.00th=[ 48], | 99.00th=[ 72], 99.50th=[ 83], 99.90th=[ 114], 99.95th=[ 125], | 99.99th=[ 125] bw ( KiB/s): min= 39, max= 328, per=25.40%, avg=104.41, stdev=59.99, samples=120 iops : min= 9, max= 82, avg=25.77, stdev=15.05, samples=120 lat (msec) : 4=0.55%, 10=27.90%, 20=34.47%, 50=33.56%, 100=3.39% lat (msec) : 250=0.10%, 750=0.03% cpu : usr=0.09%, sys=14.66%, ctx=6421, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189212: Thu Jul 16 16:56:17 2026 read: IOPS=24, BW=98.9KiB/s (101kB/s)(6028KiB/60937msec) clat (usec): min=2645, max=92819, avg=17277.15, stdev=13050.62 lat (usec): min=2645, max=92819, avg=17277.83, stdev=13050.59 clat percentiles (usec): | 1.00th=[ 3916], 5.00th=[ 4948], 10.00th=[ 5866], 20.00th=[ 7373], | 30.00th=[ 8848], 40.00th=[10683], 50.00th=[12911], 60.00th=[15139], | 70.00th=[19530], 80.00th=[26870], 90.00th=[35390], 95.00th=[43779], | 99.00th=[62653], 99.50th=[69731], 99.90th=[90702], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 31, max= 320, per=25.35%, avg=99.62, stdev=61.81, samples=120 iops : min= 7, max= 80, avg=24.57, stdev=15.49, samples=120 write: IOPS=25, BW=103KiB/s (105kB/s)(6260KiB/60937msec); 0 zone resets clat (msec): min=4, max=725, avg=22.19, stdev=22.84 lat (msec): min=4, max=725, avg=22.19, stdev=22.84 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 32], 90.00th=[ 41], 95.00th=[ 49], | 99.00th=[ 71], 99.50th=[ 86], 99.90th=[ 113], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 24, max= 303, per=25.13%, avg=103.28, stdev=57.86, samples=120 iops : min= 6, max= 75, avg=25.48, stdev=14.51, samples=120 lat (msec) : 4=0.59%, 10=28.42%, 20=34.15%, 50=33.24%, 100=3.52% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.09%, sys=14.61%, ctx=6398, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189213: Thu Jul 16 16:56:17 2026 read: IOPS=24, BW=99.7KiB/s (102kB/s)(6052KiB/60703msec) clat (msec): min=2, max=106, avg=17.51, stdev=12.87 lat (msec): min=2, max=106, avg=17.51, stdev=12.87 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 36], 95.00th=[ 43], | 99.00th=[ 62], 99.50th=[ 66], 99.90th=[ 101], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 32, max= 328, per=25.41%, avg=99.85, stdev=58.83, samples=119 iops : min= 8, max= 82, avg=24.62, stdev=14.77, samples=119 write: IOPS=25, BW=103KiB/s (105kB/s)(6236KiB/60703msec); 0 zone resets clat (msec): min=4, max=725, avg=21.85, stdev=22.64 lat (msec): min=4, max=725, avg=21.85, stdev=22.64 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 32], 90.00th=[ 41], 95.00th=[ 48], | 99.00th=[ 70], 99.50th=[ 79], 99.90th=[ 102], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 23, max= 328, per=25.11%, avg=103.20, stdev=59.22, samples=119 iops : min= 5, max= 82, avg=25.46, stdev=14.84, samples=119 lat (msec) : 4=0.59%, 10=27.96%, 20=34.41%, 50=33.53%, 100=3.39% lat (msec) : 250=0.10%, 750=0.03% cpu : usr=0.08%, sys=14.78%, ctx=6540, 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=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=393KiB/s (403kB/s), 97.3KiB/s-99.7KiB/s (99.7kB/s-102kB/s), io=23.4MiB (24.6MB), run=60703-61022msec WRITE: bw=412KiB/s (422kB/s), 103KiB/s-104KiB/s (105kB/s-107kB/s), io=24.6MiB (25.7MB), run=60703-61022msec 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=189242: Thu Jul 16 16:56:44 2026 read: IOPS=16, BW=272KiB/s (278kB/s)(5920KiB/21778msec) clat (usec): min=42, max=179605, avg=31401.70, stdev=20748.19 lat (usec): min=44, max=179606, avg=31402.77, stdev=20747.92 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 114], 10.00th=[ 13173], 20.00th=[ 17695], | 30.00th=[ 21103], 40.00th=[ 24249], 50.00th=[ 27919], 60.00th=[ 31589], | 70.00th=[ 36439], 80.00th=[ 42206], 90.00th=[ 52691], 95.00th=[ 64226], | 99.00th=[105382], 99.50th=[135267], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 157, max= 480, per=24.15%, avg=265.36, stdev=72.62, samples=42 iops : min= 9, max= 30, avg=15.90, stdev= 4.57, samples=42 write: IOPS=18, BW=292KiB/s (299kB/s)(6368KiB/21778msec); 0 zone resets clat (usec): min=1527, max=148599, avg=25224.14, stdev=22532.74 lat (usec): min=1531, max=148600, avg=25225.89, stdev=22532.68 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2507], 10.00th=[ 3130], 20.00th=[ 5735], | 30.00th=[ 8717], 40.00th=[ 13829], 50.00th=[ 19268], 60.00th=[ 25035], | 70.00th=[ 31851], 80.00th=[ 42206], 90.00th=[ 55837], 95.00th=[ 71828], | 99.00th=[ 92799], 99.50th=[112722], 99.90th=[147850], 99.95th=[147850], | 99.99th=[147850] bw ( KiB/s): min= 95, max= 542, per=25.04%, avg=289.67, stdev=99.43, samples=42 iops : min= 5, max= 33, avg=17.43, stdev= 6.26, samples=42 lat (usec) : 50=0.39%, 100=1.56%, 250=0.65%, 500=0.13% lat (msec) : 2=1.04%, 4=5.99%, 10=9.64%, 20=20.18%, 50=47.27% lat (msec) : 100=12.24%, 250=0.91% cpu : usr=0.09%, sys=11.20%, ctx=2144, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189243: Thu Jul 16 16:56:44 2026 read: IOPS=16, BW=269KiB/s (275kB/s)(5744KiB/21363msec) clat (usec): min=33, max=160119, avg=31529.62, stdev=19458.34 lat (usec): min=33, max=160120, avg=31560.24, stdev=19469.68 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 8586], 10.00th=[ 12649], 20.00th=[ 17433], | 30.00th=[ 20841], 40.00th=[ 24511], 50.00th=[ 28967], 60.00th=[ 32113], | 70.00th=[ 36439], 80.00th=[ 43254], 90.00th=[ 55837], 95.00th=[ 64750], | 99.00th=[100140], 99.50th=[117965], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 95, max= 447, per=24.44%, avg=268.55, stdev=79.76, samples=42 iops : min= 5, max= 27, avg=16.12, stdev= 4.94, samples=42 write: IOPS=19, BW=306KiB/s (314kB/s)(6544KiB/21363msec); 0 zone resets clat (usec): min=1679, max=192637, avg=24389.92, stdev=23365.85 lat (usec): min=1680, max=192639, avg=24394.04, stdev=23364.51 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2737], 10.00th=[ 3589], 20.00th=[ 5538], | 30.00th=[ 9241], 40.00th=[ 13829], 50.00th=[ 17957], 60.00th=[ 23987], | 70.00th=[ 30016], 80.00th=[ 38011], 90.00th=[ 51119], 95.00th=[ 63701], | 99.00th=[116917], 99.50th=[139461], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 63, max= 638, per=26.42%, avg=305.69, stdev=104.69, samples=42 iops : min= 3, max= 39, avg=18.43, stdev= 6.58, samples=42 lat (usec) : 50=0.26%, 100=1.30%, 250=0.39% lat (msec) : 2=1.04%, 4=5.60%, 10=10.42%, 20=22.92%, 50=45.83% lat (msec) : 100=11.07%, 250=1.17% cpu : usr=0.09%, sys=11.57%, ctx=2121, 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=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=189244: Thu Jul 16 16:56:44 2026 read: IOPS=18, BW=298KiB/s (305kB/s)(6256KiB/20989msec) clat (usec): min=37, max=180792, avg=28813.87, stdev=20683.61 lat (usec): min=37, max=180793, avg=28815.12, stdev=20683.45 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 92], 10.00th=[ 11338], 20.00th=[ 14877], | 30.00th=[ 18220], 40.00th=[ 22152], 50.00th=[ 25822], 60.00th=[ 29754], | 70.00th=[ 33817], 80.00th=[ 39060], 90.00th=[ 48497], 95.00th=[ 63701], | 99.00th=[106431], 99.50th=[145753], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 127, max= 509, per=27.25%, avg=299.49, stdev=103.79, samples=41 iops : min= 7, max= 31, avg=18.05, stdev= 6.47, samples=41 write: IOPS=17, BW=287KiB/s (294kB/s)(6032KiB/20989msec); 0 zone resets clat (usec): min=1445, max=176615, avg=25511.94, stdev=23097.69 lat (usec): min=1447, max=176618, avg=25516.22, stdev=23095.35 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 2704], 10.00th=[ 3687], 20.00th=[ 6849], | 30.00th=[ 11207], 40.00th=[ 15139], 50.00th=[ 20579], 60.00th=[ 25297], | 70.00th=[ 31851], 80.00th=[ 38011], 90.00th=[ 52167], 95.00th=[ 69731], | 99.00th=[120062], 99.50th=[156238], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 127, max= 576, per=24.47%, avg=283.15, stdev=90.29, samples=41 iops : min= 7, max= 36, avg=17.02, stdev= 5.66, samples=41 lat (usec) : 50=0.52%, 100=2.34%, 250=0.52%, 500=0.13% lat (msec) : 2=0.91%, 4=5.08%, 10=7.94%, 20=25.00%, 50=46.74% lat (msec) : 100=9.24%, 250=1.56% cpu : usr=0.08%, sys=10.82%, ctx=2159, 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=189245: Thu Jul 16 16:56:44 2026 read: IOPS=18, BW=290KiB/s (297kB/s)(6032KiB/20772msec) clat (usec): min=38, max=165194, avg=29253.16, stdev=20862.08 lat (usec): min=39, max=165195, avg=29254.10, stdev=20862.07 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 92], 10.00th=[ 11076], 20.00th=[ 16450], | 30.00th=[ 19792], 40.00th=[ 22938], 50.00th=[ 26084], 60.00th=[ 29492], | 70.00th=[ 33817], 80.00th=[ 38536], 90.00th=[ 50070], 95.00th=[ 65274], | 99.00th=[113771], 99.50th=[158335], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 159, max= 446, per=26.52%, avg=291.50, stdev=74.55, samples=40 iops : min= 9, max= 27, avg=17.58, stdev= 4.62, samples=40 write: IOPS=18, BW=301KiB/s (308kB/s)(6256KiB/20772msec); 0 zone resets clat (usec): min=1632, max=194661, avg=24397.55, stdev=23232.80 lat (usec): min=1633, max=194663, avg=24399.34, stdev=23232.85 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2638], 10.00th=[ 3359], 20.00th=[ 5473], | 30.00th=[ 9110], 40.00th=[ 14484], 50.00th=[ 19006], 60.00th=[ 23462], | 70.00th=[ 29492], 80.00th=[ 38011], 90.00th=[ 54789], 95.00th=[ 63701], | 99.00th=[102237], 99.50th=[152044], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 127, max= 541, per=26.08%, avg=301.80, stdev=107.03, samples=40 iops : min= 7, max= 33, avg=18.20, stdev= 6.73, samples=40 lat (usec) : 50=0.39%, 100=2.21%, 250=1.30%, 500=0.26% lat (msec) : 2=1.17%, 4=5.08%, 10=10.81%, 20=20.70%, 50=47.01% lat (msec) : 100=9.90%, 250=1.17% cpu : usr=0.08%, sys=11.33%, ctx=2032, 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=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=1100KiB/s (1126kB/s), 269KiB/s-298KiB/s (275kB/s-305kB/s), io=23.4MiB (24.5MB), run=20772-21778msec WRITE: bw=1157KiB/s (1185kB/s), 287KiB/s-306KiB/s (294kB/s-314kB/s), io=24.6MiB (25.8MB), run=20772-21778msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189238: Thu Jul 16 16:56:49 2026 read: IOPS=14, BW=226KiB/s (231kB/s)(5920KiB/26195msec) clat (msec): min=5, max=190, avg=25.93, stdev=21.57 lat (msec): min=5, max=190, avg=25.93, stdev=21.57 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 36], 90.00th=[ 57], 95.00th=[ 66], | 99.00th=[ 108], 99.50th=[ 153], 99.90th=[ 190], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 31, max= 637, per=24.40%, avg=217.37, stdev=127.16, samples=51 iops : min= 1, max= 39, avg=12.94, stdev= 8.06, samples=51 write: IOPS=15, BW=243KiB/s (249kB/s)(6368KiB/26195msec); 0 zone resets clat (msec): min=9, max=203, avg=41.62, stdev=27.81 lat (msec): min=9, max=203, avg=41.62, stdev=27.81 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 29], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 51], 80.00th=[ 60], 90.00th=[ 73], 95.00th=[ 95], | 99.00th=[ 157], 99.50th=[ 194], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 96, max= 544, per=25.47%, avg=238.61, stdev=108.16, samples=51 iops : min= 6, max= 34, avg=14.27, stdev= 6.85, samples=51 lat (msec) : 10=6.77%, 20=31.12%, 50=39.58%, 100=20.05%, 250=2.47% cpu : usr=0.08%, sys=4.69%, ctx=1290, 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=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=189239: Thu Jul 16 16:56:49 2026 read: IOPS=13, BW=215KiB/s (220kB/s)(5744KiB/26762msec) clat (msec): min=5, max=227, avg=28.32, stdev=28.08 lat (msec): min=5, max=227, avg=28.32, stdev=28.08 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 40], 90.00th=[ 61], 95.00th=[ 82], | 99.00th=[ 153], 99.50th=[ 197], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 31, max= 544, per=23.88%, avg=212.79, stdev=121.69, samples=52 iops : min= 1, max= 34, avg=12.67, stdev= 7.71, samples=52 write: IOPS=15, BW=245KiB/s (250kB/s)(6544KiB/26762msec); 0 zone resets clat (msec): min=9, max=204, avg=40.10, stdev=27.64 lat (msec): min=9, max=204, avg=40.10, stdev=27.64 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 47], 80.00th=[ 58], 90.00th=[ 80], 95.00th=[ 97], | 99.00th=[ 134], 99.50th=[ 161], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 92, max= 640, per=25.35%, avg=237.50, stdev=123.31, samples=52 iops : min= 5, max= 40, avg=14.21, stdev= 7.85, samples=52 lat (msec) : 10=6.77%, 20=31.51%, 50=41.15%, 100=17.06%, 250=3.52% cpu : usr=0.05%, sys=5.20%, ctx=1359, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189240: Thu Jul 16 16:56:49 2026 read: IOPS=14, BW=236KiB/s (241kB/s)(6256KiB/26544msec) clat (msec): min=5, max=203, avg=27.27, stdev=24.73 lat (msec): min=5, max=203, avg=27.27, stdev=24.73 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 39], 90.00th=[ 57], 95.00th=[ 79], | 99.00th=[ 142], 99.50th=[ 157], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 64, max= 819, per=26.18%, avg=233.27, stdev=137.96, samples=52 iops : min= 4, max= 51, avg=13.94, stdev= 8.77, samples=52 write: IOPS=14, BW=227KiB/s (233kB/s)(6032KiB/26544msec); 0 zone resets clat (msec): min=9, max=202, avg=41.65, stdev=29.04 lat (msec): min=9, max=202, avg=41.65, stdev=29.04 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 52], 80.00th=[ 60], 90.00th=[ 79], 95.00th=[ 92], | 99.00th=[ 184], 99.50th=[ 190], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 61, max= 576, per=23.84%, avg=223.40, stdev=121.87, samples=52 iops : min= 3, max= 36, avg=13.33, stdev= 7.69, samples=52 lat (msec) : 10=6.64%, 20=32.16%, 50=39.19%, 100=19.40%, 250=2.60% cpu : usr=0.05%, sys=4.92%, ctx=1319, 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=189241: Thu Jul 16 16:56:49 2026 read: IOPS=14, BW=225KiB/s (230kB/s)(6032KiB/26867msec) clat (msec): min=5, max=144, avg=27.61, stdev=23.90 lat (msec): min=5, max=144, avg=27.61, stdev=23.90 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 30], 80.00th=[ 43], 90.00th=[ 61], 95.00th=[ 81], | 99.00th=[ 125], 99.50th=[ 144], 99.90th=[ 144], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 63, max= 669, per=24.95%, avg=222.26, stdev=134.09, samples=53 iops : min= 3, max= 41, avg=13.25, stdev= 8.47, samples=53 write: IOPS=14, BW=233KiB/s (238kB/s)(6256KiB/26867msec); 0 zone resets clat (msec): min=10, max=208, avg=41.88, stdev=32.00 lat (msec): min=10, max=208, avg=41.88, stdev=32.00 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 63], 90.00th=[ 83], 95.00th=[ 103], | 99.00th=[ 190], 99.50th=[ 201], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 62, max= 576, per=24.79%, avg=232.25, stdev=131.73, samples=53 iops : min= 3, max= 36, avg=13.89, stdev= 8.38, samples=53 lat (msec) : 10=8.07%, 20=32.81%, 50=37.63%, 100=17.84%, 250=3.65% cpu : usr=0.07%, sys=4.55%, ctx=1329, 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=892KiB/s (913kB/s), 215KiB/s-236KiB/s (220kB/s-241kB/s), io=23.4MiB (24.5MB), run=26195-26867msec WRITE: bw=938KiB/s (960kB/s), 227KiB/s-245KiB/s (233kB/s-250kB/s), io=24.6MiB (25.8MB), run=26195-26867msec 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=189254: Thu Jul 16 16:56:59 2026 read: IOPS=3, BW=3657KiB/s (3745kB/s)(7168KiB/1960msec) clat (msec): min=56, max=187, avg=107.70, stdev=45.95 lat (msec): min=56, max=187, avg=107.70, stdev=45.95 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 69], | 30.00th=[ 81], 40.00th=[ 81], 50.00th=[ 107], 60.00th=[ 110], | 70.00th=[ 110], 80.00th=[ 146], 90.00th=[ 188], 95.00th=[ 188], | 99.00th=[ 188], 99.50th=[ 188], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 1932, max= 7846, per=68.09%, avg=4889.00, stdev=4181.83, samples=2 iops : min= 1, max= 7, avg= 4.00, stdev= 4.24, samples=2 write: IOPS=2, BW=2612KiB/s (2675kB/s)(5120KiB/1960msec); 0 zone resets clat (msec): min=52, max=601, avg=229.49, stdev=213.68 lat (msec): min=53, max=601, avg=229.56, stdev=213.67 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 54], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 161], 60.00th=[ 161], | 70.00th=[ 178], 80.00th=[ 178], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 1932, max= 3864, per=25.72%, avg=2585.67, stdev=1107.16, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=33.33%, 250=58.33%, 750=8.33% cpu : usr=0.00%, sys=12.86%, ctx=99, 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=189255: Thu Jul 16 16:56:59 2026 read: IOPS=0, BW=898KiB/s (920kB/s)(2048KiB/2280msec) clat (msec): min=75, max=349, avg=212.37, stdev=193.72 lat (msec): min=75, max=349, avg=212.37, stdev=193.72 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 75], | 30.00th=[ 75], 40.00th=[ 75], 50.00th=[ 75], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 1851, max= 1932, per=26.34%, avg=1891.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=4, BW=4491KiB/s (4599kB/s)(10.0MiB/2280msec); 0 zone resets clat (msec): min=59, max=437, avg=181.04, stdev=135.32 lat (msec): min=60, max=437, avg=181.15, stdev=135.37 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 63], | 30.00th=[ 70], 40.00th=[ 86], 50.00th=[ 87], 60.00th=[ 169], | 70.00th=[ 199], 80.00th=[ 309], 90.00th=[ 334], 95.00th=[ 439], | 99.00th=[ 439], 99.50th=[ 439], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 1932, max= 7406, per=42.99%, avg=4322.25, stdev=2272.16, samples=4 iops : min= 1, max= 7, avg= 3.50, stdev= 2.52, samples=4 lat (msec) : 100=50.00%, 250=16.67%, 500=33.33% cpu : usr=0.00%, sys=8.95%, ctx=67, 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=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=189256: Thu Jul 16 16:56:59 2026 read: IOPS=3, BW=3094KiB/s (3168kB/s)(6144KiB/1986msec) clat (msec): min=97, max=440, avg=171.73, stdev=133.55 lat (msec): min=97, max=440, avg=171.74, stdev=133.55 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 103], | 30.00th=[ 103], 40.00th=[ 114], 50.00th=[ 114], 60.00th=[ 118], | 70.00th=[ 159], 80.00th=[ 159], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 1932, max= 5796, per=45.16%, avg=3242.67, stdev=2211.51, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=3, BW=3094KiB/s (3168kB/s)(6144KiB/1986msec); 0 zone resets clat (msec): min=61, max=315, avg=149.59, stdev=92.20 lat (msec): min=62, max=315, avg=149.65, stdev=92.20 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 88], | 30.00th=[ 88], 40.00th=[ 99], 50.00th=[ 99], 60.00th=[ 161], | 70.00th=[ 176], 80.00th=[ 176], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 1932, max= 6000, per=39.11%, avg=3932.00, stdev=2034.85, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 lat (msec) : 100=33.33%, 250=50.00%, 500=16.67% cpu : usr=0.00%, sys=11.64%, ctx=90, 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=189257: Thu Jul 16 16:56:59 2026 read: IOPS=1, BW=1795KiB/s (1838kB/s)(5120KiB/2852msec) clat (msec): min=113, max=301, avg=179.87, stdev=71.92 lat (msec): min=113, max=301, avg=179.87, stdev=71.92 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 157], 60.00th=[ 157], | 70.00th=[ 178], 80.00th=[ 178], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 2043, max= 5796, per=54.59%, avg=3919.50, stdev=2653.77, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2513KiB/s (2574kB/s)(7168KiB/2852msec); 0 zone resets clat (msec): min=102, max=681, avg=275.56, stdev=223.66 lat (msec): min=102, max=681, avg=275.62, stdev=223.66 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 112], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 163], 60.00th=[ 218], | 70.00th=[ 218], 80.00th=[ 498], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 3864, max= 4087, per=39.89%, avg=4010.00, stdev=126.50, samples=3 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=3 lat (msec) : 250=75.00%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=10.31%, 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=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=7181KiB/s (7353kB/s), 898KiB/s-3657KiB/s (920kB/s-3745kB/s), io=20.0MiB (20.0MB), run=1960-2852msec WRITE: bw=9.82MiB/s (10.3MB/s), 2513KiB/s-4491KiB/s (2574kB/s-4599kB/s), io=28.0MiB (29.4MB), run=1960-2852msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189259: Thu Jul 16 16:56:59 2026 read: IOPS=2, BW=2801KiB/s (2868kB/s)(7168KiB/2559msec) clat (msec): min=47, max=387, avg=189.56, stdev=104.60 lat (msec): min=47, max=387, avg=189.56, stdev=104.60 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 48], 10.00th=[ 48], 20.00th=[ 126], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 188], 60.00th=[ 188], | 70.00th=[ 188], 80.00th=[ 228], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 2007, max= 4031, per=36.73%, avg=2754.75, stdev=953.61, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=2001KiB/s (2049kB/s)(5120KiB/2559msec); 0 zone resets clat (msec): min=112, max=412, avg=245.98, stdev=122.63 lat (msec): min=113, max=412, avg=246.04, stdev=122.63 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 268], 60.00th=[ 268], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 2015, max= 4015, per=25.62%, avg=2691.00, stdev=1146.70, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 50=8.33%, 250=58.33%, 500=33.33% cpu : usr=0.08%, sys=33.31%, ctx=651, 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=189260: Thu Jul 16 16:56:59 2026 read: IOPS=0, BW=793KiB/s (813kB/s)(2048KiB/2581msec) clat (msec): min=82, max=489, avg=286.17, stdev=287.45 lat (msec): min=82, max=489, avg=286.17, stdev=287.45 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 84], | 30.00th=[ 84], 40.00th=[ 84], 50.00th=[ 84], 60.00th=[ 489], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 1494, max= 2007, per=23.34%, avg=1750.50, stdev=362.75, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3967KiB/s (4063kB/s)(10.0MiB/2581msec); 0 zone resets clat (msec): min=74, max=445, avg=200.07, stdev=116.15 lat (msec): min=75, max=445, avg=200.19, stdev=116.14 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 90], | 30.00th=[ 109], 40.00th=[ 132], 50.00th=[ 171], 60.00th=[ 188], | 70.00th=[ 197], 80.00th=[ 288], 90.00th=[ 309], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 4031, max= 6131, per=51.37%, avg=5395.00, stdev=1182.49, samples=3 iops : min= 3, max= 5, avg= 4.33, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=41.67%, 500=33.33% cpu : usr=0.00%, sys=31.12%, ctx=169, 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=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=189261: Thu Jul 16 16:56:59 2026 read: IOPS=2, BW=2788KiB/s (2855kB/s)(6144KiB/2204msec) clat (usec): min=397, max=278101, avg=104449.02, stdev=129691.72 lat (usec): min=398, max=278102, avg=104450.08, stdev=129691.78 clat percentiles (usec): | 1.00th=[ 400], 5.00th=[ 400], 10.00th=[ 400], 20.00th=[ 734], | 30.00th=[ 734], 40.00th=[ 4752], 50.00th=[ 4752], 60.00th=[ 89654], | 70.00th=[252707], 80.00th=[252707], 90.00th=[278922], 95.00th=[278922], | 99.00th=[278922], 99.50th=[278922], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 4087, max= 4087, per=54.49%, avg=4087.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2788KiB/s (2855kB/s)(6144KiB/2204msec); 0 zone resets clat (msec): min=116, max=491, avg=262.49, stdev=150.96 lat (msec): min=116, max=491, avg=262.72, stdev=150.88 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 284], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 2015, max= 2959, per=23.68%, avg=2487.00, stdev=667.51, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 10=8.33%, 100=8.33%, 250=25.00%, 500=41.67% cpu : usr=0.00%, sys=26.65%, ctx=121, 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=189262: Thu Jul 16 16:56:59 2026 read: IOPS=1, BW=1875KiB/s (1920kB/s)(5120KiB/2730msec) clat (usec): min=506, max=352721, avg=173480.67, stdev=164049.89 lat (usec): min=507, max=352722, avg=173481.88, stdev=164049.64 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 1549], 40.00th=[ 1549], 50.00th=[221250], 60.00th=[221250], | 70.00th=[291505], 80.00th=[291505], 90.00th=[354419], 95.00th=[354419], | 99.00th=[354419], 99.50th=[354419], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 1950, max= 6023, per=53.15%, avg=3986.50, stdev=2880.05, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2626KiB/s (2689kB/s)(7168KiB/2730msec); 0 zone resets clat (msec): min=87, max=582, avg=265.57, stdev=194.35 lat (msec): min=87, max=582, avg=265.66, stdev=194.34 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 136], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 171], 60.00th=[ 215], | 70.00th=[ 215], 80.00th=[ 502], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1610, max= 4087, per=27.64%, avg=2903.00, stdev=1272.30, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 100=8.33%, 250=41.67%, 500=16.67%, 750=16.67% cpu : usr=0.04%, sys=22.65%, ctx=383, 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=7502KiB/s (7682kB/s), 793KiB/s-2801KiB/s (813kB/s-2868kB/s), io=20.0MiB (20.0MB), run=2204-2730msec WRITE: bw=10.3MiB/s (10.8MB/s), 2001KiB/s-3967KiB/s (2049kB/s-4063kB/s), io=28.0MiB (29.4MB), run=2204-2730msec 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=189268: Thu Jul 16 16:57:10 2026 read: IOPS=1, BW=6505KiB/s (6661kB/s)(12.0MiB/1889msec) clat (msec): min=422, max=749, avg=562.77, stdev=168.11 lat (msec): min=422, max=749, avg=562.77, stdev=168.11 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 518], 50.00th=[ 518], 60.00th=[ 518], | 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= 5610, max= 7656, per=92.23%, avg=6633.00, stdev=1446.74, 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=38.93%, ctx=1110, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189269: Thu Jul 16 16:57:10 2026 read: IOPS=0, BW=1798KiB/s (1841kB/s)(4096KiB/2278msec) clat (nsec): min=430429k, max=430429k, avg=430428699.00, stdev= 0.00 lat (nsec): min=430431k, max=430431k, avg=430430809.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3596KiB/s (3682kB/s)(8192KiB/2278msec); 0 zone resets clat (msec): min=429, max=1177, avg=803.54, stdev=529.32 lat (msec): min=429, max=1178, avg=803.81, stdev=529.33 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 1183], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8175, max= 8175, per=56.83%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=10.58%, ctx=448, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189270: Thu Jul 16 16:57:10 2026 write: IOPS=1, BW=5756KiB/s (5894kB/s)(12.0MiB/2135msec); 0 zone resets clat (msec): min=160, max=1183, avg=636.32, stdev=515.23 lat (msec): min=161, max=1184, avg=636.83, stdev=515.21 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8094, max= 8094, per=56.27%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.82%, ctx=183, 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=189272: Thu Jul 16 16:57:10 2026 write: IOPS=1, BW=6098KiB/s (6245kB/s)(12.0MiB/2015msec); 0 zone resets clat (msec): min=209, max=826, avg=498.85, stdev=310.12 lat (msec): min=209, max=826, avg=499.61, stdev=309.95 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 827], 80.00th=[ 827], 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= 8110, max= 8110, per=56.38%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=23.04%, ctx=123, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=7192KiB/s (7365kB/s), 1798KiB/s-6505KiB/s (1841kB/s-6661kB/s), io=16.0MiB (16.8MB), run=1889-2278msec WRITE: bw=14.0MiB/s (14.7MB/s), 3596KiB/s-6098KiB/s (3682kB/s-6245kB/s), io=32.0MiB (33.6MB), run=2015-2278msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189273: Thu Jul 16 16:57:10 2026 read: IOPS=1, BW=5084KiB/s (5206kB/s)(12.0MiB/2417msec) clat (msec): min=107, max=1039, avg=703.61, stdev=517.93 lat (msec): min=107, max=1039, avg=703.61, stdev=517.93 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 108], | 30.00th=[ 108], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 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= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=9.77%, ctx=84, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189274: Thu Jul 16 16:57:10 2026 read: IOPS=0, BW=1902KiB/s (1948kB/s)(4096KiB/2153msec) clat (nsec): min=405479k, max=405479k, avg=405479113.00, stdev= 0.00 lat (nsec): min=405480k, max=405480k, avg=405480041.00, 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= 5760, max= 5760, per=84.98%, avg=5760.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3805KiB/s (3896kB/s)(8192KiB/2153msec); 0 zone resets clat (msec): min=534, max=957, avg=745.92, stdev=298.66 lat (msec): min=536, max=957, avg=747.14, stdev=298.04 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 535], | 30.00th=[ 535], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 961], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8175, max= 8175, per=54.29%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=13.01%, ctx=64, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189275: Thu Jul 16 16:57:10 2026 write: IOPS=1, BW=5647KiB/s (5783kB/s)(12.0MiB/2176msec); 0 zone resets clat (msec): min=118, max=1106, avg=636.65, stdev=495.76 lat (msec): min=118, max=1106, avg=637.24, stdev=495.83 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 118], | 30.00th=[ 118], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8175, max= 8175, per=54.29%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.09%, sys=7.22%, ctx=54, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189276: Thu Jul 16 16:57:10 2026 write: IOPS=1, BW=6308KiB/s (6459kB/s)(12.0MiB/1948msec); 0 zone resets clat (msec): min=149, max=1232, avg=568.57, stdev=581.85 lat (msec): min=149, max=1233, avg=568.88, stdev=581.80 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 326], | 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= 5851, max= 5851, per=38.86%, avg=5851.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=12.38%, ctx=70, 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=6779KiB/s (6941kB/s), 1902KiB/s-5084KiB/s (1948kB/s-5206kB/s), io=16.0MiB (16.8MB), run=2153-2417msec WRITE: bw=14.7MiB/s (15.4MB/s), 3805KiB/s-6308KiB/s (3896kB/s-6459kB/s), io=32.0MiB (33.6MB), run=1948-2176msec