== sanity test 398b: DIO and buffer IO race ============== 04:12:48 (1780387968) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.65249 s, 19.0 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=184033: Tue Jun 2 04:13:50 2026 read: IOPS=28, BW=113KiB/s (116kB/s)(5992KiB/53065msec) clat (usec): min=28, max=78744, avg=18321.55, stdev=10111.59 lat (usec): min=29, max=78744, avg=18322.21, stdev=10111.67 clat percentiles (usec): | 1.00th=[ 121], 5.00th=[ 7373], 10.00th=[ 8586], 20.00th=[10421], | 30.00th=[12387], 40.00th=[14615], 50.00th=[16319], 60.00th=[18482], | 70.00th=[20579], 80.00th=[24511], 90.00th=[31065], 95.00th=[35914], | 99.00th=[54789], 99.50th=[62129], 99.90th=[76022], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 20, max= 192, per=25.20%, avg=113.40, stdev=37.54, samples=104 iops : min= 5, max= 48, avg=28.02, stdev= 9.50, samples=104 write: IOPS=29, BW=119KiB/s (121kB/s)(6296KiB/53065msec); 0 zone resets clat (usec): min=711, max=839296, avg=16087.69, stdev=23871.88 lat (usec): min=712, max=839297, avg=16090.77, stdev=23871.20 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 2737], 10.00th=[ 3195], 20.00th=[ 4752], | 30.00th=[ 7767], 40.00th=[ 10552], 50.00th=[ 13042], 60.00th=[ 16057], | 70.00th=[ 19530], 80.00th=[ 23987], 90.00th=[ 32113], 95.00th=[ 38536], | 99.00th=[ 54264], 99.50th=[ 57934], 99.90th=[ 78119], 99.95th=[843056], | 99.99th=[843056] bw ( KiB/s): min= 55, max= 208, per=25.45%, avg=120.15, stdev=34.53, samples=103 iops : min= 13, max= 52, avg=29.70, stdev= 8.77, samples=103 lat (usec) : 50=0.03%, 100=0.20%, 250=0.65%, 750=0.07%, 1000=0.23% lat (msec) : 2=0.75%, 4=7.65%, 10=18.65%, 20=41.08%, 50=29.10% lat (msec) : 100=1.56%, 1000=0.03% cpu : usr=0.09%, sys=26.10%, ctx=10026, 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=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=184035: Tue Jun 2 04:13:50 2026 read: IOPS=27, BW=112KiB/s (114kB/s)(5940KiB/53250msec) clat (usec): min=64, max=864668, avg=19299.26, stdev=24227.70 lat (usec): min=65, max=864669, avg=19299.91, stdev=24227.73 clat percentiles (usec): | 1.00th=[ 124], 5.00th=[ 7504], 10.00th=[ 8848], 20.00th=[ 10552], | 30.00th=[ 12518], 40.00th=[ 14484], 50.00th=[ 16909], 60.00th=[ 19006], | 70.00th=[ 21365], 80.00th=[ 24511], 90.00th=[ 32375], 95.00th=[ 39584], | 99.00th=[ 53216], 99.50th=[ 58983], 99.90th=[ 98042], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 56, max= 176, per=25.26%, avg=113.66, stdev=33.46, samples=104 iops : min= 14, max= 44, avg=28.09, stdev= 8.47, samples=104 write: IOPS=29, BW=119KiB/s (122kB/s)(6348KiB/53250msec); 0 zone resets clat (usec): min=829, max=70766, avg=15298.62, stdev=11624.51 lat (usec): min=829, max=70767, avg=15299.34, stdev=11624.57 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2704], 10.00th=[ 3130], 20.00th=[ 4883], | 30.00th=[ 7767], 40.00th=[10159], 50.00th=[12387], 60.00th=[15139], | 70.00th=[19268], 80.00th=[23987], 90.00th=[31851], 95.00th=[38536], | 99.00th=[52691], 99.50th=[57934], 99.90th=[69731], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 23, max= 296, per=25.73%, avg=121.43, stdev=39.36, samples=104 iops : min= 5, max= 74, avg=30.03, stdev= 9.99, samples=104 lat (usec) : 100=0.20%, 250=0.62%, 1000=0.13% lat (msec) : 2=0.62%, 4=7.58%, 10=19.34%, 20=39.94%, 50=30.08% lat (msec) : 100=1.46%, 1000=0.03% cpu : usr=0.11%, sys=25.99%, ctx=10044, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=184037: Tue Jun 2 04:13:50 2026 read: IOPS=28, BW=113KiB/s (116kB/s)(6028KiB/53131msec) clat (usec): min=29, max=881747, avg=19037.67, stdev=24287.64 lat (usec): min=30, max=881747, avg=19039.70, stdev=24287.99 clat percentiles (usec): | 1.00th=[ 110], 5.00th=[ 7439], 10.00th=[ 8848], 20.00th=[ 10552], | 30.00th=[ 12387], 40.00th=[ 14353], 50.00th=[ 16581], 60.00th=[ 19006], | 70.00th=[ 21627], 80.00th=[ 25035], 90.00th=[ 31851], 95.00th=[ 37487], | 99.00th=[ 50594], 99.50th=[ 56361], 99.90th=[ 87557], 99.95th=[884999], | 99.99th=[884999] bw ( KiB/s): min= 39, max= 216, per=25.56%, avg=115.03, stdev=36.34, samples=103 iops : min= 9, max= 54, avg=28.42, stdev= 9.22, samples=103 write: IOPS=29, BW=118KiB/s (121kB/s)(6260KiB/53131msec); 0 zone resets clat (usec): min=737, max=86048, avg=15417.81, stdev=12030.28 lat (usec): min=738, max=86050, avg=15418.67, stdev=12030.47 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 2704], 10.00th=[ 3130], 20.00th=[ 4228], | 30.00th=[ 7308], 40.00th=[ 9896], 50.00th=[12518], 60.00th=[15795], | 70.00th=[19268], 80.00th=[24249], 90.00th=[32113], 95.00th=[39584], | 99.00th=[54264], 99.50th=[57934], 99.90th=[62129], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 20, max= 200, per=24.99%, avg=117.94, stdev=41.40, samples=104 iops : min= 5, max= 50, avg=29.15, stdev=10.43, samples=104 lat (usec) : 50=0.07%, 100=0.36%, 250=0.49%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=0.91%, 4=8.43%, 10=18.23%, 20=38.93%, 50=30.86% lat (msec) : 100=1.46%, 1000=0.03% cpu : usr=0.12%, sys=26.10%, ctx=9839, 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=184039: Tue Jun 2 04:13:50 2026 read: IOPS=28, BW=115KiB/s (117kB/s)(6052KiB/52790msec) clat (usec): min=39, max=115642, avg=18478.70, stdev=10523.33 lat (usec): min=39, max=115643, avg=18479.64, stdev=10523.22 clat percentiles (usec): | 1.00th=[ 102], 5.00th=[ 7111], 10.00th=[ 8586], 20.00th=[ 10421], | 30.00th=[ 12256], 40.00th=[ 14222], 50.00th=[ 16188], 60.00th=[ 19006], | 70.00th=[ 21365], 80.00th=[ 24773], 90.00th=[ 32113], 95.00th=[ 38536], | 99.00th=[ 53216], 99.50th=[ 58459], 99.90th=[ 79168], 99.95th=[115868], | 99.99th=[115868] bw ( KiB/s): min= 47, max= 192, per=25.97%, avg=116.86, stdev=34.23, samples=103 iops : min= 11, max= 48, avg=28.88, stdev= 8.69, samples=103 write: IOPS=29, BW=118KiB/s (121kB/s)(6236KiB/52790msec); 0 zone resets clat (usec): min=704, max=873822, avg=15729.81, stdev=24541.31 lat (usec): min=705, max=873824, avg=15730.58, stdev=24541.42 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 2638], 10.00th=[ 3163], 20.00th=[ 4817], | 30.00th=[ 7701], 40.00th=[ 10159], 50.00th=[ 12649], 60.00th=[ 15533], | 70.00th=[ 19268], 80.00th=[ 23462], 90.00th=[ 30802], 95.00th=[ 37487], | 99.00th=[ 52691], 99.50th=[ 62653], 99.90th=[ 82314], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 32, max= 216, per=25.50%, avg=120.37, stdev=41.05, samples=103 iops : min= 8, max= 54, avg=29.76, stdev=10.37, samples=103 lat (usec) : 50=0.07%, 100=0.33%, 250=0.85%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=0.94%, 4=7.65%, 10=18.55%, 20=39.97%, 50=30.11% lat (msec) : 100=1.30%, 250=0.03%, 1000=0.03% cpu : usr=0.12%, sys=26.05%, ctx=9896, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=451KiB/s (462kB/s), 112KiB/s-115KiB/s (114kB/s-117kB/s), io=23.4MiB (24.6MB), run=52790-53250msec WRITE: bw=472KiB/s (483kB/s), 118KiB/s-119KiB/s (121kB/s-122kB/s), io=24.6MiB (25.7MB), run=52790-53250msec rand-rw: (groupid=0, jobs=1): err= 0: pid=184032: Tue Jun 2 04:13:56 2026 read: IOPS=25, BW=101KiB/s (104kB/s)(5992KiB/59079msec) clat (msec): min=2, max=841, avg=17.07, stdev=24.85 lat (msec): min=2, max=841, avg=17.07, stdev=24.85 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 35], 95.00th=[ 43], | 99.00th=[ 62], 99.50th=[ 69], 99.90th=[ 91], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 15, max= 376, per=25.12%, avg=102.00, stdev=71.50, samples=115 iops : min= 3, max= 94, avg=25.16, stdev=17.99, samples=115 write: IOPS=26, BW=107KiB/s (109kB/s)(6296KiB/59079msec); 0 zone resets clat (msec): min=4, max=109, avg=21.09, stdev=14.68 lat (msec): min=4, max=109, avg=21.10, stdev=14.68 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 33], 90.00th=[ 41], 95.00th=[ 50], | 99.00th=[ 68], 99.50th=[ 78], 99.90th=[ 94], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 15, max= 384, per=25.13%, avg=106.81, stdev=71.78, samples=115 iops : min= 3, max= 96, avg=26.36, stdev=18.03, samples=115 lat (msec) : 4=1.27%, 10=32.23%, 20=29.95%, 50=32.88%, 100=3.61% lat (msec) : 250=0.03%, 1000=0.03% cpu : usr=0.08%, sys=14.63%, ctx=6493, 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=184034: Tue Jun 2 04:13:56 2026 read: IOPS=25, BW=101KiB/s (103kB/s)(5940KiB/59087msec) clat (msec): min=2, max=873, avg=17.21, stdev=25.73 lat (msec): min=2, max=873, avg=17.21, stdev=25.73 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 26], 90.00th=[ 36], 95.00th=[ 44], | 99.00th=[ 63], 99.50th=[ 68], 99.90th=[ 92], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 31, max= 360, per=24.97%, avg=101.38, stdev=72.29, samples=115 iops : min= 7, max= 90, avg=25.00, stdev=18.18, samples=115 write: IOPS=26, BW=107KiB/s (110kB/s)(6348KiB/59087msec); 0 zone resets clat (msec): min=4, max=111, avg=20.95, stdev=14.77 lat (msec): min=4, max=111, avg=20.95, stdev=14.77 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 32], 90.00th=[ 40], 95.00th=[ 48], | 99.00th=[ 73], 99.50th=[ 81], 99.90th=[ 108], 99.95th=[ 112], | 99.99th=[ 112] bw ( KiB/s): min= 39, max= 376, per=25.28%, avg=107.43, stdev=71.72, samples=115 iops : min= 9, max= 94, avg=26.51, stdev=18.03, samples=115 lat (msec) : 4=1.24%, 10=33.11%, 20=28.29%, 50=33.89%, 100=3.35% lat (msec) : 250=0.10%, 1000=0.03% cpu : usr=0.10%, sys=14.52%, ctx=6568, 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=184036: Tue Jun 2 04:13:56 2026 read: IOPS=25, BW=102KiB/s (104kB/s)(6028KiB/59082msec) clat (usec): min=2921, max=85150, avg=16838.41, stdev=13322.06 lat (usec): min=2922, max=85151, avg=16839.11, stdev=13322.05 clat percentiles (usec): | 1.00th=[ 3752], 5.00th=[ 4424], 10.00th=[ 4817], 20.00th=[ 5604], | 30.00th=[ 7308], 40.00th=[10028], 50.00th=[12649], 60.00th=[15533], | 70.00th=[19530], 80.00th=[26346], 90.00th=[36963], 95.00th=[44827], | 99.00th=[58459], 99.50th=[67634], 99.90th=[81265], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 31, max= 376, per=25.23%, avg=102.43, stdev=74.43, samples=115 iops : min= 7, max= 94, avg=25.26, stdev=18.72, samples=115 write: IOPS=26, BW=106KiB/s (108kB/s)(6260KiB/59082msec); 0 zone resets clat (msec): min=4, max=872, avg=21.35, stdev=26.10 lat (msec): min=4, max=872, avg=21.35, stdev=26.10 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 32], 90.00th=[ 40], 95.00th=[ 48], | 99.00th=[ 78], 99.50th=[ 87], 99.90th=[ 112], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 24, max= 368, per=25.00%, avg=106.24, stdev=70.37, samples=115 iops : min= 6, max= 92, avg=26.22, stdev=17.68, samples=115 lat (msec) : 4=0.78%, 10=33.59%, 20=29.43%, 50=32.91%, 100=3.09% lat (msec) : 250=0.16%, 1000=0.03% cpu : usr=0.09%, sys=14.71%, ctx=6586, 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=184038: Tue Jun 2 04:13:56 2026 read: IOPS=25, BW=102KiB/s (105kB/s)(6052KiB/59100msec) clat (usec): min=2472, max=88172, avg=16779.38, stdev=12962.71 lat (usec): min=2472, max=88175, avg=16779.98, stdev=12962.77 clat percentiles (usec): | 1.00th=[ 3490], 5.00th=[ 4359], 10.00th=[ 4817], 20.00th=[ 5735], | 30.00th=[ 7767], 40.00th=[10552], 50.00th=[12911], 60.00th=[15795], | 70.00th=[20317], 80.00th=[26084], 90.00th=[33817], 95.00th=[42206], | 99.00th=[61604], 99.50th=[68682], 99.90th=[85459], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 39, max= 376, per=25.30%, avg=102.70, stdev=70.17, samples=115 iops : min= 9, max= 94, avg=25.33, stdev=17.65, samples=115 write: IOPS=26, BW=106KiB/s (108kB/s)(6236KiB/59100msec); 0 zone resets clat (msec): min=4, max=879, avg=21.44, stdev=26.10 lat (msec): min=4, max=879, avg=21.44, stdev=26.10 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 32], 90.00th=[ 41], 95.00th=[ 49], | 99.00th=[ 71], 99.50th=[ 80], 99.90th=[ 107], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 39, max= 368, per=24.90%, avg=105.83, stdev=71.94, samples=115 iops : min= 9, max= 92, avg=26.11, stdev=18.08, samples=115 lat (msec) : 4=1.33%, 10=32.42%, 20=28.48%, 50=34.11%, 100=3.58% lat (msec) : 250=0.03%, 1000=0.03% cpu : usr=0.10%, sys=14.49%, ctx=6757, 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=406KiB/s (416kB/s), 101KiB/s-102KiB/s (103kB/s-105kB/s), io=23.4MiB (24.6MB), run=59079-59100msec WRITE: bw=425KiB/s (436kB/s), 106KiB/s-107KiB/s (108kB/s-110kB/s), io=24.6MiB (25.7MB), run=59079-59100msec 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=184059: Tue Jun 2 04:14:15 2026 read: IOPS=27, BW=441KiB/s (452kB/s)(5920KiB/13417msec) clat (usec): min=50, max=68782, avg=18742.77, stdev=10344.38 lat (usec): min=51, max=68783, avg=18743.33, stdev=10344.40 clat percentiles (usec): | 1.00th=[ 92], 5.00th=[ 133], 10.00th=[ 9372], 20.00th=[11469], | 30.00th=[13042], 40.00th=[15401], 50.00th=[17433], 60.00th=[19268], | 70.00th=[21103], 80.00th=[25297], 90.00th=[30802], 95.00th=[39584], | 99.00th=[51119], 99.50th=[66847], 99.90th=[68682], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 255, max= 702, per=24.95%, avg=435.96, stdev=99.12, samples=26 iops : min= 15, max= 43, avg=26.85, stdev= 6.07, samples=26 write: IOPS=29, BW=475KiB/s (486kB/s)(6368KiB/13417msec); 0 zone resets clat (usec): min=1115, max=59941, avg=16192.84, stdev=10709.97 lat (usec): min=1116, max=59942, avg=16195.65, stdev=10711.58 clat percentiles (usec): | 1.00th=[ 3064], 5.00th=[ 4228], 10.00th=[ 4817], 20.00th=[ 5997], | 30.00th=[ 9110], 40.00th=[11600], 50.00th=[13960], 60.00th=[16188], | 70.00th=[19530], 80.00th=[24511], 90.00th=[31589], 95.00th=[36963], | 99.00th=[51643], 99.50th=[56361], 99.90th=[60031], 99.95th=[60031], | 99.99th=[60031] bw ( KiB/s): min= 224, max= 672, per=25.78%, avg=473.85, stdev=122.67, samples=26 iops : min= 14, max= 42, avg=29.23, stdev= 7.62, samples=26 lat (usec) : 100=0.78%, 250=1.95% lat (msec) : 2=0.39%, 4=1.30%, 10=18.75%, 20=44.53%, 50=30.86% lat (msec) : 100=1.43% cpu : usr=0.09%, sys=28.13%, ctx=2952, 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=184060: Tue Jun 2 04:14:15 2026 read: IOPS=26, BW=425KiB/s (435kB/s)(5744KiB/13514msec) clat (usec): min=74, max=60242, avg=19251.46, stdev=9792.79 lat (usec): min=75, max=60242, avg=19252.01, stdev=9792.79 clat percentiles (usec): | 1.00th=[ 100], 5.00th=[ 229], 10.00th=[10159], 20.00th=[12125], | 30.00th=[14222], 40.00th=[16450], 50.00th=[18220], 60.00th=[20055], | 70.00th=[21890], 80.00th=[25822], 90.00th=[31851], 95.00th=[39584], | 99.00th=[46400], 99.50th=[52167], 99.90th=[60031], 99.95th=[60031], | 99.99th=[60031] bw ( KiB/s): min= 128, max= 576, per=24.41%, avg=426.42, stdev=102.34, samples=26 iops : min= 8, max= 36, avg=26.27, stdev= 6.40, samples=26 write: IOPS=30, BW=484KiB/s (496kB/s)(6544KiB/13514msec); 0 zone resets clat (usec): min=1318, max=69839, avg=16095.96, stdev=10363.12 lat (usec): min=1318, max=69841, avg=16097.04, stdev=10363.20 clat percentiles (usec): | 1.00th=[ 3589], 5.00th=[ 4424], 10.00th=[ 4948], 20.00th=[ 7111], | 30.00th=[ 9503], 40.00th=[11863], 50.00th=[13566], 60.00th=[16188], | 70.00th=[19268], 80.00th=[23725], 90.00th=[30278], 95.00th=[35914], | 99.00th=[48497], 99.50th=[53216], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 191, max= 672, per=25.83%, avg=474.81, stdev=121.17, samples=26 iops : min= 11, max= 42, avg=29.31, stdev= 7.71, samples=26 lat (usec) : 100=0.52%, 250=1.95%, 500=0.13% lat (msec) : 2=0.26%, 4=0.78%, 10=17.71%, 20=45.44%, 50=32.55% lat (msec) : 100=0.65% cpu : usr=0.08%, sys=28.14%, ctx=3021, 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=184061: Tue Jun 2 04:14:15 2026 read: IOPS=28, BW=456KiB/s (467kB/s)(6256KiB/13709msec) clat (usec): min=47, max=60390, avg=18460.22, stdev=8696.33 lat (usec): min=48, max=60390, avg=18460.82, stdev=8696.35 clat percentiles (usec): | 1.00th=[ 90], 5.00th=[ 7570], 10.00th=[ 9765], 20.00th=[11731], | 30.00th=[13698], 40.00th=[15926], 50.00th=[17433], 60.00th=[19530], | 70.00th=[21890], 80.00th=[24249], 90.00th=[28705], 95.00th=[34341], | 99.00th=[45351], 99.50th=[53216], 99.90th=[60556], 99.95th=[60556], | 99.99th=[60556] bw ( KiB/s): min= 223, max= 640, per=26.23%, avg=458.30, stdev=117.48, samples=27 iops : min= 13, max= 40, avg=28.22, stdev= 7.33, samples=27 write: IOPS=27, BW=440KiB/s (451kB/s)(6032KiB/13709msec); 0 zone resets clat (usec): min=1480, max=79519, avg=17011.31, stdev=10520.69 lat (usec): min=1481, max=79520, avg=17012.52, stdev=10521.09 clat percentiles (usec): | 1.00th=[ 3097], 5.00th=[ 4817], 10.00th=[ 5473], 20.00th=[ 8455], | 30.00th=[10945], 40.00th=[12780], 50.00th=[14091], 60.00th=[16909], | 70.00th=[20317], 80.00th=[25297], 90.00th=[32113], 95.00th=[38536], | 99.00th=[46924], 99.50th=[51119], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 192, max= 672, per=23.61%, avg=433.93, stdev=112.69, samples=27 iops : min= 12, max= 42, avg=26.70, stdev= 7.14, samples=27 lat (usec) : 50=0.13%, 100=1.17%, 250=0.78%, 500=0.13% lat (msec) : 2=0.26%, 4=0.39%, 10=16.28%, 20=46.61%, 50=33.72% lat (msec) : 100=0.52% cpu : usr=0.07%, sys=28.41%, ctx=3189, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=184063: Tue Jun 2 04:14:15 2026 read: IOPS=27, BW=443KiB/s (454kB/s)(6032KiB/13616msec) clat (usec): min=61, max=55767, avg=18322.59, stdev=9776.42 lat (usec): min=61, max=55767, avg=18323.16, stdev=9776.44 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 119], 10.00th=[ 8160], 20.00th=[11207], | 30.00th=[13698], 40.00th=[15664], 50.00th=[17695], 60.00th=[19792], | 70.00th=[22152], 80.00th=[24773], 90.00th=[30016], 95.00th=[36963], | 99.00th=[47973], 99.50th=[49546], 99.90th=[55837], 99.95th=[55837], | 99.99th=[55837] bw ( KiB/s): min= 96, max= 640, per=24.92%, avg=435.35, stdev=120.90, samples=26 iops : min= 6, max= 40, avg=26.81, stdev= 7.48, samples=26 write: IOPS=28, BW=459KiB/s (470kB/s)(6256KiB/13616msec); 0 zone resets clat (usec): min=1777, max=67255, avg=17034.16, stdev=11454.59 lat (usec): min=1778, max=67256, avg=17035.26, stdev=11454.65 clat percentiles (usec): | 1.00th=[ 3195], 5.00th=[ 4424], 10.00th=[ 4883], 20.00th=[ 6521], | 30.00th=[ 9634], 40.00th=[11731], 50.00th=[14091], 60.00th=[16581], | 70.00th=[20841], 80.00th=[26084], 90.00th=[32637], 95.00th=[39584], | 99.00th=[54264], 99.50th=[60556], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 286, max= 608, per=24.72%, avg=454.27, stdev=94.61, samples=26 iops : min= 17, max= 38, avg=28.00, stdev= 6.00, samples=26 lat (usec) : 100=1.17%, 250=2.60%, 750=0.13% lat (msec) : 2=0.13%, 4=1.43%, 10=18.75%, 20=39.71%, 50=35.29% lat (msec) : 100=0.78% cpu : usr=0.06%, sys=28.08%, ctx=3036, 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=1747KiB/s (1789kB/s), 425KiB/s-456KiB/s (435kB/s-467kB/s), io=23.4MiB (24.5MB), run=13417-13709msec WRITE: bw=1838KiB/s (1882kB/s), 440KiB/s-484KiB/s (451kB/s-496kB/s), io=24.6MiB (25.8MB), run=13417-13709msec rand-rw: (groupid=0, jobs=1): err= 0: pid=184064: Tue Jun 2 04:14:16 2026 read: IOPS=24, BW=390KiB/s (399kB/s)(5920KiB/15187msec) clat (usec): min=2939, max=67996, avg=17286.32, stdev=12907.33 lat (usec): min=2940, max=67997, avg=17286.91, stdev=12907.34 clat percentiles (usec): | 1.00th=[ 3163], 5.00th=[ 4686], 10.00th=[ 5276], 20.00th=[ 6980], | 30.00th=[ 8979], 40.00th=[10945], 50.00th=[13173], 60.00th=[15533], | 70.00th=[19792], 80.00th=[26084], 90.00th=[34866], 95.00th=[42730], | 99.00th=[64226], 99.50th=[66323], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 160, max= 1312, per=24.66%, avg=388.83, stdev=252.48, samples=30 iops : min= 10, max= 82, avg=23.73, stdev=15.97, samples=30 write: IOPS=26, BW=419KiB/s (429kB/s)(6368KiB/15187msec); 0 zone resets clat (usec): min=4686, max=78089, avg=21836.26, stdev=14237.33 lat (usec): min=4687, max=78091, avg=21837.60, stdev=14237.36 clat percentiles (usec): | 1.00th=[ 5145], 5.00th=[ 6325], 10.00th=[ 7111], 20.00th=[ 8848], | 30.00th=[11863], 40.00th=[14091], 50.00th=[18482], 60.00th=[22938], | 70.00th=[27657], 80.00th=[32637], 90.00th=[41681], 95.00th=[49546], | 99.00th=[66847], 99.50th=[74974], 99.90th=[78119], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 191, max= 1216, per=25.19%, avg=417.93, stdev=249.30, samples=30 iops : min= 11, max= 76, avg=25.57, stdev=15.73, samples=30 lat (msec) : 4=1.43%, 10=28.65%, 20=31.77%, 50=34.24%, 100=3.91% cpu : usr=0.04%, sys=14.14%, ctx=1833, 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=184065: Tue Jun 2 04:14:16 2026 read: IOPS=23, BW=380KiB/s (389kB/s)(5744KiB/15106msec) clat (usec): min=3040, max=68745, avg=17402.84, stdev=12360.07 lat (usec): min=3041, max=68745, avg=17403.37, stdev=12360.09 clat percentiles (usec): | 1.00th=[ 3818], 5.00th=[ 5080], 10.00th=[ 6063], 20.00th=[ 7242], | 30.00th=[ 9372], 40.00th=[11338], 50.00th=[13304], 60.00th=[15401], | 70.00th=[20055], 80.00th=[26084], 90.00th=[37487], 95.00th=[44303], | 99.00th=[53740], 99.50th=[64226], 99.90th=[68682], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 160, max= 1056, per=23.03%, avg=363.24, stdev=186.19, samples=29 iops : min= 10, max= 66, avg=22.14, stdev=11.71, samples=29 write: IOPS=27, BW=433KiB/s (444kB/s)(6544KiB/15106msec); 0 zone resets clat (usec): min=4694, max=75953, avg=21593.59, stdev=14158.56 lat (usec): min=4695, max=75955, avg=21595.07, stdev=14158.43 clat percentiles (usec): | 1.00th=[ 5145], 5.00th=[ 6521], 10.00th=[ 7177], 20.00th=[ 9110], | 30.00th=[11076], 40.00th=[13698], 50.00th=[18220], 60.00th=[22414], | 70.00th=[26084], 80.00th=[33817], 90.00th=[41681], 95.00th=[50070], | 99.00th=[64226], 99.50th=[65799], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 160, max= 1184, per=24.44%, avg=405.52, stdev=226.59, samples=29 iops : min= 10, max= 74, avg=24.76, stdev=14.32, samples=29 lat (msec) : 4=0.78%, 10=27.99%, 20=32.55%, 50=34.77%, 100=3.91% cpu : usr=0.07%, sys=14.20%, ctx=1699, 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=184066: Tue Jun 2 04:14:16 2026 read: IOPS=26, BW=417KiB/s (428kB/s)(6256KiB/14985msec) clat (usec): min=3845, max=60193, avg=17376.35, stdev=11859.16 lat (usec): min=3846, max=60194, avg=17376.96, stdev=11859.18 clat percentiles (usec): | 1.00th=[ 4555], 5.00th=[ 5276], 10.00th=[ 5800], 20.00th=[ 7635], | 30.00th=[ 9503], 40.00th=[11600], 50.00th=[13566], 60.00th=[16581], | 70.00th=[20841], 80.00th=[25297], 90.00th=[33817], 95.00th=[43254], | 99.00th=[56886], 99.50th=[60031], 99.90th=[60031], 99.95th=[60031], | 99.99th=[60031] bw ( KiB/s): min= 192, max= 1472, per=25.87%, avg=407.93, stdev=246.42, samples=29 iops : min= 12, max= 92, avg=24.93, stdev=15.53, samples=29 write: IOPS=25, BW=403KiB/s (412kB/s)(6032KiB/14985msec); 0 zone resets clat (usec): min=5253, max=74854, avg=21525.14, stdev=12790.44 lat (usec): min=5254, max=74856, avg=21526.50, stdev=12790.49 clat percentiles (usec): | 1.00th=[ 6128], 5.00th=[ 7046], 10.00th=[ 7898], 20.00th=[10290], | 30.00th=[13829], 40.00th=[15664], 50.00th=[19006], 60.00th=[22152], | 70.00th=[24773], 80.00th=[30016], 90.00th=[38011], 95.00th=[47973], | 99.00th=[69731], 99.50th=[73925], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 128, max= 896, per=23.06%, avg=382.55, stdev=158.74, samples=29 iops : min= 8, max= 56, avg=23.34, stdev=10.06, samples=29 lat (msec) : 4=0.13%, 10=25.52%, 20=35.29%, 50=35.94%, 100=3.12% cpu : usr=0.08%, sys=14.88%, ctx=1734, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=184067: Tue Jun 2 04:14:16 2026 read: IOPS=24, BW=398KiB/s (407kB/s)(6032KiB/15161msec) clat (usec): min=2742, max=64802, avg=17038.84, stdev=13200.35 lat (usec): min=2743, max=64802, avg=17039.49, stdev=13200.37 clat percentiles (usec): | 1.00th=[ 3294], 5.00th=[ 4621], 10.00th=[ 5342], 20.00th=[ 6521], | 30.00th=[ 8455], 40.00th=[10290], 50.00th=[12387], 60.00th=[14615], | 70.00th=[19530], 80.00th=[27132], 90.00th=[36963], 95.00th=[46924], | 99.00th=[60031], 99.50th=[62129], 99.90th=[64750], 99.95th=[64750], | 99.99th=[64750] bw ( KiB/s): min= 127, max= 1152, per=23.21%, avg=366.00, stdev=214.88, samples=29 iops : min= 7, max= 72, avg=22.31, stdev=13.55, samples=29 write: IOPS=25, BW=413KiB/s (423kB/s)(6256KiB/15161msec); 0 zone resets clat (usec): min=4930, max=76460, avg=22142.31, stdev=15074.11 lat (usec): min=4932, max=76461, avg=22143.92, stdev=15074.30 clat percentiles (usec): | 1.00th=[ 5276], 5.00th=[ 6587], 10.00th=[ 7439], 20.00th=[ 9241], | 30.00th=[12256], 40.00th=[14353], 50.00th=[17433], 60.00th=[21627], | 70.00th=[26346], 80.00th=[33817], 90.00th=[43779], 95.00th=[51643], | 99.00th=[72877], 99.50th=[73925], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 160, max= 1024, per=23.32%, avg=386.83, stdev=183.17, samples=29 iops : min= 10, max= 64, avg=23.59, stdev=11.60, samples=29 lat (msec) : 4=0.78%, 10=30.21%, 20=33.46%, 50=30.73%, 100=4.82% cpu : usr=0.07%, sys=14.25%, ctx=1664, 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=1577KiB/s (1615kB/s), 380KiB/s-417KiB/s (389kB/s-428kB/s), io=23.4MiB (24.5MB), run=14985-15187msec WRITE: bw=1659KiB/s (1699kB/s), 403KiB/s-433KiB/s (412kB/s-444kB/s), io=24.6MiB (25.8MB), run=14985-15187msec 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=184076: Tue Jun 2 04:14:25 2026 read: IOPS=3, BW=3600KiB/s (3687kB/s)(7168KiB/1991msec) clat (msec): min=55, max=245, avg=129.74, stdev=70.68 lat (msec): min=55, max=245, avg=129.74, stdev=70.68 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 56], 10.00th=[ 56], 20.00th=[ 58], | 30.00th=[ 75], 40.00th=[ 75], 50.00th=[ 148], 60.00th=[ 157], | 70.00th=[ 157], 80.00th=[ 171], 90.00th=[ 247], 95.00th=[ 247], | 99.00th=[ 247], 99.50th=[ 247], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 2048, max= 5626, per=53.95%, avg=3923.33, stdev=1795.24, samples=3 iops : min= 2, max= 5, avg= 3.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2572KiB/s (2633kB/s)(5120KiB/1991msec); 0 zone resets clat (msec): min=98, max=328, avg=207.25, stdev=112.19 lat (msec): min=98, max=328, avg=207.32, stdev=112.18 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 99], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 148], 60.00th=[ 148], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 1875, max= 6144, per=39.38%, avg=4009.50, stdev=3018.64, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 lat (msec) : 100=33.33%, 250=50.00%, 500=16.67% cpu : usr=0.00%, sys=22.16%, 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=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=184078: Tue Jun 2 04:14:25 2026 read: IOPS=0, BW=727KiB/s (745kB/s)(2048KiB/2816msec) clat (msec): min=51, max=104, avg=78.01, stdev=38.02 lat (msec): min=51, max=104, avg=78.01, stdev=38.02 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 52], 10.00th=[ 52], 20.00th=[ 52], | 30.00th=[ 52], 40.00th=[ 52], 50.00th=[ 52], 60.00th=[ 106], | 70.00th=[ 106], 80.00th=[ 106], 90.00th=[ 106], 95.00th=[ 106], | 99.00th=[ 106], 99.50th=[ 106], 99.90th=[ 106], 99.95th=[ 106], | 99.99th=[ 106] bw ( KiB/s): min= 1875, max= 2043, per=26.94%, avg=1959.00, stdev=118.79, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3636KiB/s (3724kB/s)(10.0MiB/2816msec); 0 zone resets clat (msec): min=78, max=628, avg=261.88, stdev=180.12 lat (msec): min=78, max=628, avg=261.94, stdev=180.13 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 89], | 30.00th=[ 90], 40.00th=[ 126], 50.00th=[ 228], 60.00th=[ 257], | 70.00th=[ 313], 80.00th=[ 405], 90.00th=[ 409], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 2043, max= 5626, per=33.90%, avg=3451.00, stdev=1740.31, samples=4 iops : min= 1, max= 5, avg= 2.75, stdev= 1.71, samples=4 lat (msec) : 100=33.33%, 250=25.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=27.60%, ctx=298, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=184080: Tue Jun 2 04:14:25 2026 read: IOPS=2, BW=2257KiB/s (2311kB/s)(6144KiB/2722msec) clat (msec): min=68, max=456, avg=183.07, stdev=142.35 lat (msec): min=68, max=456, avg=183.07, stdev=142.35 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 100], | 30.00th=[ 100], 40.00th=[ 106], 50.00th=[ 106], 60.00th=[ 180], | 70.00th=[ 190], 80.00th=[ 190], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 2043, max= 4087, per=35.16%, avg=2556.50, stdev=1020.34, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=2, BW=2257KiB/s (2311kB/s)(6144KiB/2722msec); 0 zone resets clat (msec): min=69, max=394, avg=260.76, stdev=111.58 lat (msec): min=69, max=394, avg=260.81, stdev=111.58 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 292], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 2043, max= 3778, per=24.35%, avg=2479.25, stdev=865.84, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 500=41.67% cpu : usr=0.04%, sys=17.90%, ctx=136, 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=184082: Tue Jun 2 04:14:25 2026 read: IOPS=2, BW=2092KiB/s (2143kB/s)(5120KiB/2447msec) clat (msec): min=75, max=432, avg=202.24, stdev=152.88 lat (msec): min=75, max=432, avg=202.24, stdev=152.88 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 91], 40.00th=[ 91], 50.00th=[ 129], 60.00th=[ 129], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 435], 95.00th=[ 435], | 99.00th=[ 435], 99.50th=[ 435], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 2043, max= 6144, per=56.29%, avg=4093.50, stdev=2899.84, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=2, BW=2929KiB/s (3000kB/s)(7168KiB/2447msec); 0 zone resets clat (msec): min=48, max=439, avg=203.13, stdev=152.27 lat (msec): min=48, max=439, avg=203.20, stdev=152.27 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 64], | 30.00th=[ 70], 40.00th=[ 70], 50.00th=[ 199], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 342], 90.00th=[ 439], 95.00th=[ 439], | 99.00th=[ 439], 99.50th=[ 439], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 2048, max= 5688, per=37.99%, avg=3868.00, stdev=2573.87, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 lat (msec) : 50=8.33%, 100=33.33%, 250=16.67%, 500=41.67% cpu : usr=0.04%, sys=13.65%, ctx=87, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=7273KiB/s (7447kB/s), 727KiB/s-3600KiB/s (745kB/s-3687kB/s), io=20.0MiB (20.0MB), run=1991-2816msec WRITE: bw=9.94MiB/s (10.4MB/s), 2257KiB/s-3636KiB/s (2311kB/s-3724kB/s), io=28.0MiB (29.4MB), run=1991-2816msec rand-rw: (groupid=0, jobs=1): err= 0: pid=184077: Tue Jun 2 04:14:25 2026 read: IOPS=2, BW=2798KiB/s (2865kB/s)(7168KiB/2562msec) clat (usec): min=459, max=202570, avg=98715.29, stdev=93749.20 lat (usec): min=460, max=202571, avg=98716.30, stdev=93749.25 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 461], 10.00th=[ 461], 20.00th=[ 478], | 30.00th=[ 5473], 40.00th=[ 5473], 50.00th=[135267], 60.00th=[145753], | 70.00th=[145753], 80.00th=[200279], 90.00th=[202376], 95.00th=[202376], | 99.00th=[202376], 99.50th=[202376], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 2039, max= 4096, per=41.73%, avg=2986.75, stdev=1097.58, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.29, samples=4 write: IOPS=1, BW=1998KiB/s (2046kB/s)(5120KiB/2562msec); 0 zone resets clat (msec): min=189, max=704, avg=350.58, stdev=204.58 lat (msec): min=189, max=704, avg=350.62, stdev=204.57 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 262], 40.00th=[ 262], 50.00th=[ 262], 60.00th=[ 262], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 2007, max= 4096, per=27.11%, avg=2717.00, stdev=1194.42, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (usec) : 500=16.67% lat (msec) : 10=8.33%, 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=34.87%, ctx=209, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=184079: Tue Jun 2 04:14:25 2026 read: IOPS=0, BW=716KiB/s (733kB/s)(2048KiB/2861msec) clat (msec): min=143, max=179, avg=161.15, stdev=25.31 lat (msec): min=143, max=179, avg=161.15, stdev=25.31 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 180], | 70.00th=[ 180], 80.00th=[ 180], 90.00th=[ 180], 95.00th=[ 180], | 99.00th=[ 180], 99.50th=[ 180], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 1868, max= 2007, per=27.07%, avg=1937.50, stdev=98.29, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3579KiB/s (3665kB/s)(10.0MiB/2861msec); 0 zone resets clat (msec): min=29, max=644, avg=246.06, stdev=165.92 lat (msec): min=29, max=644, avg=246.11, stdev=165.93 clat percentiles (msec): | 1.00th=[ 30], 5.00th=[ 30], 10.00th=[ 30], 20.00th=[ 118], | 30.00th=[ 155], 40.00th=[ 182], 50.00th=[ 190], 60.00th=[ 243], | 70.00th=[ 284], 80.00th=[ 300], 90.00th=[ 321], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1868, max= 4096, per=28.14%, avg=2819.60, stdev=1159.37, samples=5 iops : min= 1, max= 4, avg= 2.20, stdev= 1.30, samples=5 lat (msec) : 50=8.33%, 250=58.33%, 500=25.00%, 750=8.33% cpu : usr=0.07%, sys=47.06%, ctx=429, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=184081: Tue Jun 2 04:14:25 2026 read: IOPS=2, BW=2174KiB/s (2226kB/s)(6144KiB/2826msec) clat (msec): min=94, max=194, avg=133.64, stdev=33.43 lat (msec): min=94, max=194, avg=133.64, stdev=33.43 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 120], | 30.00th=[ 120], 40.00th=[ 123], 50.00th=[ 123], 60.00th=[ 134], | 70.00th=[ 138], 80.00th=[ 138], 90.00th=[ 194], 95.00th=[ 194], | 99.00th=[ 194], 99.50th=[ 194], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 2048, max= 4096, per=47.31%, avg=3386.33, stdev=1159.74, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=2, BW=2174KiB/s (2226kB/s)(6144KiB/2826msec); 0 zone resets clat (msec): min=223, max=481, avg=320.11, stdev=94.08 lat (msec): min=224, max=481, avg=320.18, stdev=94.09 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 338], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 1875, max= 4079, per=24.97%, avg=2502.25, stdev=1053.75, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=33.33% cpu : usr=0.00%, sys=43.68%, ctx=1116, 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=184083: Tue Jun 2 04:14:25 2026 read: IOPS=2, BW=2747KiB/s (2813kB/s)(5120KiB/1864msec) clat (usec): min=471, max=142156, avg=77729.15, stdev=67470.15 lat (usec): min=471, max=142156, avg=77729.94, stdev=67469.95 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], 20.00th=[ 474], | 30.00th=[ 9110], 40.00th=[ 9110], 50.00th=[112722], 60.00th=[112722], | 70.00th=[124257], 80.00th=[124257], 90.00th=[141558], 95.00th=[141558], | 99.00th=[141558], 99.50th=[141558], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 4079, max= 4096, per=57.10%, avg=4087.50, stdev=12.02, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3845KiB/s (3938kB/s)(7168KiB/1864msec); 0 zone resets clat (msec): min=171, max=253, avg=208.23, stdev=28.54 lat (msec): min=171, max=253, avg=208.29, stdev=28.54 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 180], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 209], 60.00th=[ 213], | 70.00th=[ 213], 80.00th=[ 230], 90.00th=[ 255], 95.00th=[ 255], | 99.00th=[ 255], 99.50th=[ 255], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 3676, max= 4096, per=39.42%, avg=3950.33, stdev=237.73, samples=3 iops : min= 3, max= 4, avg= 3.33, stdev= 0.58, samples=3 lat (usec) : 500=8.33% lat (msec) : 10=8.33%, 250=75.00%, 500=8.33% cpu : usr=0.00%, sys=64.30%, ctx=480, 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=7158KiB/s (7330kB/s), 716KiB/s-2798KiB/s (733kB/s-2865kB/s), io=20.0MiB (20.0MB), run=1864-2861msec WRITE: bw=9.79MiB/s (10.3MB/s), 1998KiB/s-3845KiB/s (2046kB/s-3938kB/s), io=28.0MiB (29.4MB), run=1864-2861msec 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=184093: Tue Jun 2 04:14:33 2026 read: IOPS=1, BW=5994KiB/s (6138kB/s)(12.0MiB/2050msec) clat (msec): min=143, max=1462, avg=653.51, stdev=708.78 lat (msec): min=143, max=1462, avg=653.51, stdev=708.78 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] 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 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.27%, ctx=74, 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=184094: Tue Jun 2 04:14:33 2026 read: IOPS=0, BW=2249KiB/s (2303kB/s)(4096KiB/1821msec) clat (nsec): min=970545k, max=970545k, avg=970544576.00, stdev= 0.00 lat (nsec): min=970546k, max=970546k, avg=970545530.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 969], 5.00th=[ 969], 10.00th=[ 969], 20.00th=[ 969], | 30.00th=[ 969], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] 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=1, BW=4499KiB/s (4607kB/s)(8192KiB/1821msec); 0 zone resets clat (msec): min=304, max=422, avg=363.62, stdev=83.28 lat (msec): min=304, max=422, avg=363.88, stdev=83.28 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 422], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 8110, max= 8110, per=47.59%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=21.59%, ctx=81, 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=184095: Tue Jun 2 04:14:33 2026 write: IOPS=1, BW=6657KiB/s (6816kB/s)(12.0MiB/1846msec); 0 zone resets clat (msec): min=141, max=1357, avg=571.43, stdev=681.51 lat (msec): min=141, max=1357, avg=571.69, stdev=681.51 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 215], 50.00th=[ 215], 60.00th=[ 215], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min=16221, max=16221, per=95.19%, avg=16221.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=15.77%, ctx=103, 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=184096: Tue Jun 2 04:14:33 2026 write: IOPS=1, BW=6390KiB/s (6543kB/s)(12.0MiB/1923msec); 0 zone resets clat (msec): min=245, max=1276, avg=616.28, stdev=573.42 lat (msec): min=246, max=1277, avg=616.62, stdev=573.35 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 326], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min=12525, max=12525, per=73.50%, avg=12525.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=15.19%, ctx=71, 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=7992KiB/s (8184kB/s), 2249KiB/s-5994KiB/s (2303kB/s-6138kB/s), io=16.0MiB (16.8MB), run=1821-2050msec WRITE: bw=16.6MiB/s (17.4MB/s), 4499KiB/s-6657KiB/s (4607kB/s-6816kB/s), io=32.0MiB (33.6MB), run=1821-1923msec rand-rw: (groupid=0, jobs=1): err= 0: pid=184089: Tue Jun 2 04:14:33 2026 read: IOPS=2, BW=8376KiB/s (8577kB/s)(12.0MiB/1467msec) clat (msec): min=397, max=512, avg=438.28, stdev=64.34 lat (msec): min=397, max=512, avg=438.28, stdev=64.34 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 514], 80.00th=[ 514], 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= 5760, max= 8192, per=62.46%, avg=6976.00, stdev=1719.68, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=45.36%, ctx=2638, 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=184090: Tue Jun 2 04:14:33 2026 read: IOPS=0, BW=2901KiB/s (2970kB/s)(4096KiB/1412msec) clat (nsec): min=517036k, max=517036k, avg=517036081.00, stdev= 0.00 lat (nsec): min=517038k, max=517038k, avg=517037984.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 518], 50.00th=[ 518], 60.00th=[ 518], | 70.00th=[ 518], 80.00th=[ 518], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 8175, max= 8175, per=73.20%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5802KiB/s (5941kB/s)(8192KiB/1412msec); 0 zone resets clat (msec): min=303, max=386, avg=345.12, stdev=58.54 lat (msec): min=303, max=386, avg=345.38, stdev=58.59 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=42.66%, ctx=806, 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=184091: Tue Jun 2 04:14:33 2026 write: IOPS=1, BW=5437KiB/s (5568kB/s)(12.0MiB/2260msec); 0 zone resets clat (msec): min=62, max=1730, avg=683.99, stdev=911.74 lat (msec): min=63, max=1730, avg=684.30, stdev=911.72 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 63], | 30.00th=[ 63], 40.00th=[ 259], 50.00th=[ 259], 60.00th=[ 259], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 8062, max= 8062, per=55.60%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.09%, sys=20.05%, ctx=115, 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=184092: Tue Jun 2 04:14:33 2026 write: IOPS=1, BW=6774KiB/s (6937kB/s)(12.0MiB/1814msec); 0 zone resets clat (msec): min=142, max=1297, avg=554.20, stdev=644.99 lat (msec): min=143, max=1297, avg=554.47, stdev=645.03 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 222], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min=11473, max=11473, per=79.13%, avg=11473.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=19.31%, ctx=114, 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=10.9MiB/s (11.4MB/s), 2901KiB/s-8376KiB/s (2970kB/s-8577kB/s), io=16.0MiB (16.8MB), run=1412-1467msec WRITE: bw=14.2MiB/s (14.8MB/s), 5437KiB/s-6774KiB/s (5568kB/s-6937kB/s), io=32.0MiB (33.6MB), run=1412-2260msec