== sanity test 398b: DIO and buffer IO race ============== 20:47:27 (1773103647) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.78829 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=153774: Mon Mar 9 20:48:32 2026 read: IOPS=26, BW=107KiB/s (109kB/s)(5992KiB/56241msec) clat (usec): min=35, max=717102, avg=19703.28, stdev=22108.62 lat (usec): min=36, max=717104, avg=19705.80, stdev=22108.35 clat percentiles (usec): | 1.00th=[ 78], 5.00th=[ 4015], 10.00th=[ 8029], 20.00th=[ 10159], | 30.00th=[ 12649], 40.00th=[ 14746], 50.00th=[ 17171], 60.00th=[ 19530], | 70.00th=[ 22414], 80.00th=[ 26346], 90.00th=[ 32900], 95.00th=[ 40633], | 99.00th=[ 67634], 99.50th=[ 82314], 99.90th=[149947], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 6, max= 192, per=25.12%, avg=106.27, stdev=30.69, samples=111 iops : min= 1, max= 48, avg=26.21, stdev= 7.69, samples=111 write: IOPS=27, BW=112KiB/s (115kB/s)(6296KiB/56241msec); 0 zone resets clat (usec): min=832, max=115868, avg=16849.80, stdev=14114.80 lat (usec): min=833, max=115869, avg=16850.78, stdev=14114.86 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 2180], 10.00th=[ 3032], 20.00th=[ 4621], | 30.00th=[ 7046], 40.00th=[ 10290], 50.00th=[ 13435], 60.00th=[ 17171], | 70.00th=[ 21365], 80.00th=[ 27657], 90.00th=[ 35390], 95.00th=[ 43779], | 99.00th=[ 58459], 99.50th=[ 69731], 99.90th=[115868], 99.95th=[115868], | 99.99th=[115868] bw ( KiB/s): min= 24, max= 200, per=25.37%, avg=112.41, stdev=35.80, samples=110 iops : min= 6, max= 50, avg=27.75, stdev= 8.97, samples=110 lat (usec) : 50=0.20%, 100=0.75%, 250=1.30%, 500=0.10%, 1000=0.33% lat (msec) : 2=1.73%, 4=6.77%, 10=18.52%, 20=34.96%, 50=32.75% lat (msec) : 100=2.38%, 250=0.20%, 750=0.03% cpu : usr=0.12%, sys=24.62%, ctx=9049, 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=153775: Mon Mar 9 20:48:32 2026 read: IOPS=26, BW=105KiB/s (107kB/s)(5940KiB/56667msec) clat (usec): min=31, max=145810, avg=19241.57, stdev=12025.02 lat (usec): min=31, max=145811, avg=19242.40, stdev=12025.08 clat percentiles (usec): | 1.00th=[ 94], 5.00th=[ 5473], 10.00th=[ 8455], 20.00th=[ 10683], | 30.00th=[ 12780], 40.00th=[ 14877], 50.00th=[ 17171], 60.00th=[ 19792], | 70.00th=[ 22676], 80.00th=[ 25822], 90.00th=[ 33162], 95.00th=[ 40109], | 99.00th=[ 57934], 99.50th=[ 68682], 99.90th=[121111], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 6, max= 183, per=24.63%, avg=104.18, stdev=31.65, samples=112 iops : min= 1, max= 45, avg=25.69, stdev= 7.95, samples=112 write: IOPS=28, BW=112KiB/s (115kB/s)(6348KiB/56667msec); 0 zone resets clat (usec): min=746, max=713735, avg=17578.99, stdev=22300.82 lat (usec): min=747, max=713736, avg=17579.96, stdev=22300.87 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 2245], 10.00th=[ 3032], 20.00th=[ 4686], | 30.00th=[ 7439], 40.00th=[ 10814], 50.00th=[ 14222], 60.00th=[ 17695], | 70.00th=[ 21890], 80.00th=[ 27132], 90.00th=[ 34866], 95.00th=[ 43779], | 99.00th=[ 65274], 99.50th=[ 73925], 99.90th=[ 86508], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 39, max= 192, per=25.26%, avg=111.89, stdev=32.21, samples=111 iops : min= 9, max= 48, avg=27.62, stdev= 8.10, samples=111 lat (usec) : 50=0.13%, 100=0.52%, 250=1.27%, 500=0.20%, 750=0.07% lat (usec) : 1000=0.16% lat (msec) : 2=1.79%, 4=6.38%, 10=16.93%, 20=36.26%, 50=33.89% lat (msec) : 100=2.28%, 250=0.10%, 750=0.03% cpu : usr=0.13%, sys=24.78%, ctx=9089, 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=153776: Mon Mar 9 20:48:32 2026 read: IOPS=26, BW=107KiB/s (109kB/s)(6028KiB/56557msec) clat (usec): min=44, max=131631, avg=19148.20, stdev=12392.76 lat (usec): min=46, max=131632, avg=19149.14, stdev=12392.83 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 5014], 10.00th=[ 7832], 20.00th=[ 10159], | 30.00th=[ 11994], 40.00th=[ 14353], 50.00th=[ 16909], 60.00th=[ 19530], | 70.00th=[ 22938], 80.00th=[ 27395], 90.00th=[ 33817], 95.00th=[ 40633], | 99.00th=[ 58983], 99.50th=[ 78119], 99.90th=[103285], 99.95th=[131597], | 99.99th=[131597] bw ( KiB/s): min= 16, max= 192, per=25.28%, avg=106.94, stdev=32.34, samples=111 iops : min= 4, max= 48, avg=26.38, stdev= 8.12, samples=111 write: IOPS=27, BW=111KiB/s (113kB/s)(6260KiB/56557msec); 0 zone resets clat (usec): min=762, max=762514, avg=17565.15, stdev=23404.31 lat (usec): min=762, max=762515, avg=17566.25, stdev=23404.41 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 2343], 10.00th=[ 3064], 20.00th=[ 4424], | 30.00th=[ 7308], 40.00th=[ 10814], 50.00th=[ 13960], 60.00th=[ 17695], | 70.00th=[ 22152], 80.00th=[ 27395], 90.00th=[ 35390], 95.00th=[ 41681], | 99.00th=[ 64750], 99.50th=[ 70779], 99.90th=[110625], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 24, max= 200, per=25.02%, avg=110.82, stdev=38.38, samples=111 iops : min= 6, max= 50, avg=27.35, stdev= 9.66, samples=111 lat (usec) : 50=0.13%, 100=0.59%, 250=1.60%, 500=0.03%, 1000=0.33% lat (msec) : 2=1.60%, 4=7.03%, 10=17.48%, 20=34.80%, 50=34.18% lat (msec) : 100=2.05%, 250=0.16%, 1000=0.03% cpu : usr=0.12%, sys=24.86%, ctx=9065, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153777: Mon Mar 9 20:48:32 2026 read: IOPS=26, BW=107KiB/s (110kB/s)(6052KiB/56353msec) clat (usec): min=37, max=713268, avg=19831.07, stdev=21509.19 lat (usec): min=38, max=713270, avg=19833.19, stdev=21509.12 clat percentiles (usec): | 1.00th=[ 84], 5.00th=[ 5866], 10.00th=[ 8160], 20.00th=[ 10290], | 30.00th=[ 12780], 40.00th=[ 15139], 50.00th=[ 17171], 60.00th=[ 19792], | 70.00th=[ 22938], 80.00th=[ 26870], 90.00th=[ 33817], 95.00th=[ 39584], | 99.00th=[ 57934], 99.50th=[ 65799], 99.90th=[129500], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 6, max= 200, per=25.34%, avg=107.18, stdev=33.49, samples=112 iops : min= 1, max= 50, avg=26.44, stdev= 8.41, samples=112 write: IOPS=27, BW=111KiB/s (113kB/s)(6236KiB/56353msec); 0 zone resets clat (usec): min=776, max=156420, avg=16760.64, stdev=13871.54 lat (usec): min=776, max=156421, avg=16762.12, stdev=13871.56 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 2278], 10.00th=[ 2999], 20.00th=[ 4621], | 30.00th=[ 7111], 40.00th=[ 10421], 50.00th=[ 13698], 60.00th=[ 17171], | 70.00th=[ 21365], 80.00th=[ 26608], 90.00th=[ 34866], 95.00th=[ 42206], | 99.00th=[ 60031], 99.50th=[ 72877], 99.90th=[108528], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 27, max= 200, per=24.88%, avg=110.21, stdev=29.10, samples=112 iops : min= 6, max= 50, avg=27.20, stdev= 7.31, samples=112 lat (usec) : 50=0.10%, 100=0.68%, 250=1.27%, 500=0.13%, 1000=0.33% lat (msec) : 2=1.63%, 4=6.74%, 10=17.90%, 20=34.64%, 50=34.21% lat (msec) : 100=2.21%, 250=0.13%, 750=0.03% cpu : usr=0.12%, sys=25.21%, ctx=9178, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=424KiB/s (434kB/s), 105KiB/s-107KiB/s (107kB/s-110kB/s), io=23.4MiB (24.6MB), run=56241-56667msec WRITE: bw=444KiB/s (454kB/s), 111KiB/s-112KiB/s (113kB/s-115kB/s), io=24.6MiB (25.7MB), run=56241-56667msec fio: pid=153778, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=153778: Mon Mar 9 20:48:58 2026 read: IOPS=15, BW=61.6KiB/s (63.1kB/s)(4252KiB/69011msec) clat (msec): min=3, max=719, avg=19.67, stdev=27.87 lat (msec): min=3, max=719, avg=19.67, stdev=27.87 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 41], 95.00th=[ 54], | 99.00th=[ 92], 99.50th=[ 107], 99.90th=[ 157], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 200, per=22.75%, avg=61.43, stdev=38.63, samples=136 iops : min= 1, max= 50, avg=14.97, stdev= 9.83, samples=136 write: IOPS=16, BW=64.7KiB/s (66.3kB/s)(4468KiB/69011msec); 0 zone resets clat (msec): min=14, max=181, avg=42.92, stdev=22.21 lat (msec): min=14, max=181, avg=42.92, stdev=22.21 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 45], | 70.00th=[ 52], 80.00th=[ 59], 90.00th=[ 73], 95.00th=[ 85], | 99.00th=[ 112], 99.50th=[ 132], 99.90th=[ 178], 99.95th=[ 182], | 99.99th=[ 182] bw ( KiB/s): min= 8, max= 160, per=22.89%, avg=64.78, stdev=33.86, samples=136 iops : min= 2, max= 40, avg=15.81, stdev= 8.64, samples=136 lat (msec) : 4=1.19%, 10=17.01%, 20=19.94%, 50=42.46%, 100=17.97% lat (msec) : 250=1.33%, 750=0.05% cpu : usr=0.07%, sys=8.92%, ctx=4273, majf=0, minf=20 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=1064,1117,0,0 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=153779: Mon Mar 9 20:48:58 2026 read: IOPS=18, BW=72.1KiB/s (73.9kB/s)(5940KiB/82345msec) clat (msec): min=2, max=727, avg=15.79, stdev=24.00 lat (msec): min=2, max=727, avg=15.79, stdev=24.00 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 6], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 13], | 70.00th=[ 18], 80.00th=[ 23], 90.00th=[ 34], 95.00th=[ 46], | 99.00th=[ 81], 99.50th=[ 90], 99.90th=[ 159], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 8, max= 240, per=26.81%, avg=72.39, stdev=46.22, samples=163 iops : min= 2, max= 60, avg=17.76, stdev=11.73, samples=163 write: IOPS=19, BW=77.1KiB/s (78.9kB/s)(6348KiB/82345msec); 0 zone resets clat (msec): min=11, max=171, avg=37.00, stdev=21.20 lat (msec): min=11, max=171, avg=37.00, stdev=21.20 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 21], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 53], 90.00th=[ 66], 95.00th=[ 78], | 99.00th=[ 113], 99.50th=[ 130], 99.90th=[ 167], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 15, max= 216, per=27.33%, avg=77.34, stdev=42.58, samples=163 iops : min= 3, max= 54, avg=19.00, stdev=10.84, samples=163 lat (msec) : 4=3.32%, 10=21.45%, 20=20.41%, 50=41.47%, 100=12.34% lat (msec) : 250=0.98%, 750=0.03% cpu : usr=0.10%, sys=9.02%, ctx=6144, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153780: Mon Mar 9 20:48:58 2026 read: IOPS=18, BW=73.6KiB/s (75.4kB/s)(6028KiB/81896msec) clat (msec): min=3, max=132, avg=15.32, stdev=14.71 lat (msec): min=3, max=132, avg=15.32, stdev=14.71 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 34], 95.00th=[ 44], | 99.00th=[ 73], 99.50th=[ 88], 99.90th=[ 125], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 7, max= 232, per=27.53%, avg=74.32, stdev=45.24, samples=161 iops : min= 1, max= 58, avg=18.24, stdev=11.47, samples=161 write: IOPS=19, BW=76.4KiB/s (78.3kB/s)(6260KiB/81896msec); 0 zone resets clat (msec): min=12, max=752, avg=37.46, stdev=28.08 lat (msec): min=12, max=752, avg=37.46, stdev=28.08 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 19], 20.00th=[ 21], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 52], 90.00th=[ 66], 95.00th=[ 81], | 99.00th=[ 116], 99.50th=[ 140], 99.90th=[ 159], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 15, max= 168, per=27.08%, avg=76.64, stdev=41.92, samples=162 iops : min= 3, max= 42, avg=18.82, stdev=10.68, samples=162 lat (msec) : 4=2.60%, 10=21.81%, 20=21.39%, 50=41.41%, 100=11.78% lat (msec) : 250=0.98%, 1000=0.03% cpu : usr=0.09%, sys=9.05%, ctx=6180, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153781: Mon Mar 9 20:48:58 2026 read: IOPS=18, BW=74.3KiB/s (76.0kB/s)(6052KiB/81500msec) clat (msec): min=2, max=127, avg=15.42, stdev=14.86 lat (msec): min=2, max=127, avg=15.42, stdev=14.86 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 6], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 37], 95.00th=[ 46], | 99.00th=[ 72], 99.50th=[ 84], 99.90th=[ 128], 99.95th=[ 128], | 99.99th=[ 128] bw ( KiB/s): min= 8, max= 232, per=27.95%, avg=75.47, stdev=45.94, samples=159 iops : min= 2, max= 58, avg=18.53, stdev=11.66, samples=159 write: IOPS=19, BW=76.5KiB/s (78.4kB/s)(6236KiB/81500msec); 0 zone resets clat (msec): min=13, max=744, avg=37.20, stdev=27.51 lat (msec): min=13, max=744, avg=37.20, stdev=27.51 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 21], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 52], 90.00th=[ 66], 95.00th=[ 78], | 99.00th=[ 108], 99.50th=[ 124], 99.90th=[ 182], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 15, max= 176, per=27.11%, avg=76.71, stdev=41.48, samples=161 iops : min= 3, max= 44, avg=18.84, stdev=10.57, samples=161 lat (msec) : 4=2.70%, 10=22.75%, 20=20.12%, 50=41.50%, 100=12.01% lat (msec) : 250=0.88%, 750=0.03% cpu : usr=0.13%, sys=9.04%, ctx=6179, 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=270KiB/s (277kB/s), 61.6KiB/s-74.3KiB/s (63.1kB/s-76.0kB/s), io=21.8MiB (22.8MB), run=69011-82345msec WRITE: bw=283KiB/s (290kB/s), 64.7KiB/s-77.1KiB/s (66.3kB/s-78.9kB/s), io=22.8MiB (23.9MB), run=69011-82345msec 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=153814: Mon Mar 9 20:49:18 2026 read: IOPS=26, BW=429KiB/s (439kB/s)(5920KiB/13811msec) clat (usec): min=36, max=79352, avg=19311.11, stdev=13400.18 lat (usec): min=36, max=79353, avg=19311.86, stdev=13400.25 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 102], 10.00th=[ 155], 20.00th=[10290], | 30.00th=[12911], 40.00th=[15008], 50.00th=[17433], 60.00th=[20055], | 70.00th=[23200], 80.00th=[27132], 90.00th=[33424], 95.00th=[42730], | 99.00th=[73925], 99.50th=[77071], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 254, max= 766, per=25.44%, avg=428.33, stdev=114.72, samples=27 iops : min= 15, max= 47, avg=26.04, stdev= 7.20, samples=27 write: IOPS=28, BW=461KiB/s (472kB/s)(6368KiB/13811msec); 0 zone resets clat (usec): min=1033, max=137680, avg=16487.97, stdev=14057.38 lat (usec): min=1034, max=137683, avg=16489.36, stdev=14057.52 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 2245], 10.00th=[ 3130], 20.00th=[ 4621], | 30.00th=[ 6456], 40.00th=[ 9372], 50.00th=[ 13435], 60.00th=[ 17171], | 70.00th=[ 20841], 80.00th=[ 26870], 90.00th=[ 34341], 95.00th=[ 42206], | 99.00th=[ 54264], 99.50th=[ 65274], 99.90th=[137364], 99.95th=[137364], | 99.99th=[137364] bw ( KiB/s): min= 191, max= 766, per=26.10%, avg=462.44, stdev=133.23, samples=27 iops : min= 11, max= 47, avg=28.19, stdev= 8.39, samples=27 lat (usec) : 50=0.52%, 100=1.69%, 250=3.12% lat (msec) : 2=2.21%, 4=5.60%, 10=17.06%, 20=33.33%, 50=34.11% lat (msec) : 100=2.21%, 250=0.13% cpu : usr=0.14%, sys=25.22%, ctx=2386, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153816: Mon Mar 9 20:49:18 2026 read: IOPS=27, BW=438KiB/s (449kB/s)(5744KiB/13106msec) clat (usec): min=36, max=70637, avg=18410.05, stdev=11922.16 lat (usec): min=37, max=70639, avg=18410.83, stdev=11922.19 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 81], 10.00th=[ 131], 20.00th=[ 9896], | 30.00th=[12518], 40.00th=[15008], 50.00th=[17433], 60.00th=[20317], | 70.00th=[22938], 80.00th=[27919], 90.00th=[33817], 95.00th=[38536], | 99.00th=[58459], 99.50th=[63177], 99.90th=[70779], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 254, max= 672, per=25.87%, avg=435.64, stdev=108.34, samples=25 iops : min= 15, max= 42, avg=26.48, stdev= 6.88, samples=25 write: IOPS=31, BW=499KiB/s (511kB/s)(6544KiB/13106msec); 0 zone resets clat (usec): min=1205, max=86873, avg=15795.60, stdev=13163.61 lat (usec): min=1207, max=86875, avg=15797.02, stdev=13163.65 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2868], 10.00th=[ 3326], 20.00th=[ 4883], | 30.00th=[ 6718], 40.00th=[ 9503], 50.00th=[11731], 60.00th=[15008], | 70.00th=[19530], 80.00th=[24511], 90.00th=[33817], 95.00th=[41157], | 99.00th=[60031], 99.50th=[71828], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 315, max= 862, per=27.78%, avg=492.28, stdev=128.42, samples=25 iops : min= 19, max= 53, avg=30.04, stdev= 8.04, samples=25 lat (usec) : 50=0.78%, 100=2.34%, 250=2.86%, 500=0.26% lat (msec) : 2=1.30%, 4=5.47%, 10=18.49%, 20=33.20%, 50=33.46% lat (msec) : 100=1.82% cpu : usr=0.11%, sys=27.14%, ctx=2436, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153819: Mon Mar 9 20:49:18 2026 read: IOPS=27, BW=440KiB/s (451kB/s)(6256KiB/14217msec) clat (usec): min=37, max=160776, avg=19283.95, stdev=14086.05 lat (usec): min=37, max=160777, avg=19284.75, stdev=14086.11 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 100], 10.00th=[ 172], 20.00th=[ 10945], | 30.00th=[ 12911], 40.00th=[ 15270], 50.00th=[ 17957], 60.00th=[ 20841], | 70.00th=[ 23725], 80.00th=[ 27919], 90.00th=[ 32637], 95.00th=[ 38536], | 99.00th=[ 64226], 99.50th=[ 93848], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 183, max= 800, per=26.35%, avg=443.68, stdev=136.92, samples=28 iops : min= 11, max= 50, avg=27.04, stdev= 8.68, samples=28 write: IOPS=26, BW=424KiB/s (434kB/s)(6032KiB/14217msec); 0 zone resets clat (usec): min=1015, max=114648, avg=17380.50, stdev=15468.17 lat (usec): min=1016, max=114652, avg=17382.47, stdev=15468.09 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 2638], 10.00th=[ 3425], 20.00th=[ 4752], | 30.00th=[ 7177], 40.00th=[ 10552], 50.00th=[ 13698], 60.00th=[ 16909], | 70.00th=[ 21365], 80.00th=[ 27657], 90.00th=[ 35390], 95.00th=[ 43779], | 99.00th=[ 83362], 99.50th=[110625], 99.90th=[114820], 99.95th=[114820], | 99.99th=[114820] bw ( KiB/s): min= 190, max= 736, per=23.85%, avg=422.57, stdev=142.43, samples=28 iops : min= 11, max= 46, avg=25.71, stdev= 8.94, samples=28 lat (usec) : 50=0.52%, 100=1.95%, 250=3.39%, 500=0.13% lat (msec) : 2=1.82%, 4=4.56%, 10=15.23%, 20=35.16%, 50=34.77% lat (msec) : 100=2.08%, 250=0.39% cpu : usr=0.10%, sys=24.63%, ctx=2436, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153820: Mon Mar 9 20:49:18 2026 read: IOPS=27, BW=434KiB/s (444kB/s)(6032KiB/13914msec) clat (usec): min=49, max=77507, avg=17990.73, stdev=12266.21 lat (usec): min=51, max=77508, avg=17991.53, stdev=12266.24 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 94], 10.00th=[ 125], 20.00th=[ 9634], | 30.00th=[12518], 40.00th=[14615], 50.00th=[17171], 60.00th=[19792], | 70.00th=[21890], 80.00th=[26870], 90.00th=[32113], 95.00th=[40109], | 99.00th=[54789], 99.50th=[67634], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 130, max= 637, per=25.52%, avg=429.74, stdev=134.99, samples=27 iops : min= 8, max= 39, avg=26.15, stdev= 8.43, samples=27 write: IOPS=28, BW=450KiB/s (460kB/s)(6256KiB/13914msec); 0 zone resets clat (usec): min=1639, max=132035, avg=18056.05, stdev=16622.38 lat (usec): min=1641, max=132037, avg=18057.76, stdev=16622.47 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2737], 10.00th=[ 3720], 20.00th=[ 5080], | 30.00th=[ 6652], 40.00th=[ 9765], 50.00th=[ 12911], 60.00th=[ 16909], | 70.00th=[ 22676], 80.00th=[ 28705], 90.00th=[ 39060], 95.00th=[ 46400], | 99.00th=[ 77071], 99.50th=[104334], 99.90th=[131597], 99.95th=[131597], | 99.99th=[131597] bw ( KiB/s): min= 159, max= 734, per=25.29%, avg=448.19, stdev=145.19, samples=27 iops : min= 9, max= 45, avg=27.30, stdev= 9.12, samples=27 lat (usec) : 50=0.13%, 100=2.99%, 250=3.91%, 500=0.26%, 750=0.26% lat (msec) : 2=0.65%, 4=6.51%, 10=16.02%, 20=31.90%, 50=34.38% lat (msec) : 100=2.73%, 250=0.26% cpu : usr=0.06%, sys=25.06%, ctx=2366, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1685KiB/s (1725kB/s), 429KiB/s-440KiB/s (439kB/s-451kB/s), io=23.4MiB (24.5MB), run=13106-14217msec WRITE: bw=1773KiB/s (1815kB/s), 424KiB/s-499KiB/s (434kB/s-511kB/s), io=24.6MiB (25.8MB), run=13106-14217msec fio: pid=153818, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=153813: Mon Mar 9 20:49:26 2026 read: IOPS=16, BW=268KiB/s (275kB/s)(5920KiB/22079msec) clat (msec): min=3, max=120, avg=17.21, stdev=17.18 lat (msec): min=3, max=120, avg=17.22, stdev=17.18 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 22], 90.00th=[ 36], 95.00th=[ 53], | 99.00th=[ 93], 99.50th=[ 109], 99.90th=[ 121], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 63, max= 672, per=26.79%, avg=260.37, stdev=154.20, samples=43 iops : min= 3, max= 42, avg=15.79, stdev= 9.84, samples=43 write: IOPS=18, BW=288KiB/s (295kB/s)(6368KiB/22079msec); 0 zone resets clat (msec): min=14, max=149, avg=39.41, stdev=23.63 lat (msec): min=14, max=149, avg=39.41, stdev=23.63 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 72], 95.00th=[ 90], | 99.00th=[ 118], 99.50th=[ 130], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 64, max= 608, per=27.74%, avg=285.21, stdev=154.06, samples=43 iops : min= 4, max= 38, avg=17.35, stdev= 9.81, samples=43 lat (msec) : 4=0.65%, 10=19.27%, 20=25.13%, 50=39.84%, 100=13.15% lat (msec) : 250=1.95% cpu : usr=0.07%, sys=8.51%, ctx=1708, 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=153815: Mon Mar 9 20:49:26 2026 read: IOPS=16, BW=258KiB/s (265kB/s)(5744KiB/22234msec) clat (msec): min=2, max=114, avg=17.24, stdev=17.55 lat (msec): min=2, max=114, avg=17.24, stdev=17.55 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 12], 60.00th=[ 13], | 70.00th=[ 16], 80.00th=[ 22], 90.00th=[ 39], 95.00th=[ 58], | 99.00th=[ 89], 99.50th=[ 104], 99.90th=[ 115], 99.95th=[ 115], | 99.99th=[ 115] bw ( KiB/s): min= 31, max= 672, per=26.47%, avg=257.25, stdev=173.04, samples=44 iops : min= 1, max= 42, avg=15.61, stdev=10.98, samples=44 write: IOPS=18, BW=294KiB/s (301kB/s)(6544KiB/22234msec); 0 zone resets clat (msec): min=12, max=200, avg=38.99, stdev=24.29 lat (msec): min=12, max=200, avg=39.00, stdev=24.29 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 44], 80.00th=[ 55], 90.00th=[ 75], 95.00th=[ 88], | 99.00th=[ 122], 99.50th=[ 126], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 127, max= 672, per=28.50%, avg=292.93, stdev=155.52, samples=44 iops : min= 7, max= 42, avg=17.84, stdev= 9.96, samples=44 lat (msec) : 4=1.17%, 10=17.71%, 20=26.30%, 50=39.19%, 100=13.93% lat (msec) : 250=1.69% cpu : usr=0.09%, sys=8.65%, ctx=1748, 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=153817: Mon Mar 9 20:49:26 2026 read: IOPS=17, BW=283KiB/s (290kB/s)(6256KiB/22121msec) clat (msec): min=2, max=140, avg=17.33, stdev=17.95 lat (msec): min=2, max=140, avg=17.33, stdev=17.95 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 35], 95.00th=[ 55], | 99.00th=[ 95], 99.50th=[ 120], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 63, max= 1024, per=28.96%, avg=281.49, stdev=196.73, samples=43 iops : min= 3, max= 64, avg=17.12, stdev=12.46, samples=43 write: IOPS=17, BW=273KiB/s (279kB/s)(6032KiB/22121msec); 0 zone resets clat (msec): min=13, max=174, avg=40.48, stdev=26.02 lat (msec): min=13, max=174, avg=40.49, stdev=26.02 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 18], 10.00th=[ 19], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 46], 80.00th=[ 57], 90.00th=[ 78], 95.00th=[ 90], | 99.00th=[ 138], 99.50th=[ 174], 99.90th=[ 176], 99.95th=[ 176], | 99.99th=[ 176] bw ( KiB/s): min= 126, max= 544, per=25.87%, avg=265.91, stdev=146.90, samples=43 iops : min= 7, max= 34, avg=16.14, stdev= 9.40, samples=43 lat (msec) : 4=0.91%, 10=20.70%, 20=26.30%, 50=36.33%, 100=13.54% lat (msec) : 250=2.21% cpu : usr=0.08%, sys=8.68%, ctx=1760, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=153818: Mon Mar 9 20:49:26 2026 read: IOPS=13, BW=219KiB/s (224kB/s)(3712KiB/16961msec) clat (msec): min=3, max=149, avg=22.20, stdev=20.92 lat (msec): min=3, max=149, avg=22.20, stdev=20.92 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 20], | 70.00th=[ 24], 80.00th=[ 33], 90.00th=[ 46], 95.00th=[ 65], | 99.00th=[ 93], 99.50th=[ 142], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 95, max= 510, per=22.26%, avg=216.33, stdev=114.46, samples=33 iops : min= 5, max= 31, avg=12.91, stdev= 7.03, samples=33 write: IOPS=14, BW=231KiB/s (237kB/s)(3920KiB/16961msec); 0 zone resets clat (msec): min=15, max=169, avg=48.00, stdev=24.12 lat (msec): min=15, max=169, avg=48.00, stdev=24.12 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 45], 60.00th=[ 51], | 70.00th=[ 57], 80.00th=[ 67], 90.00th=[ 81], 95.00th=[ 91], | 99.00th=[ 120], 99.50th=[ 126], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 95, max= 542, per=21.77%, avg=223.82, stdev=117.62, samples=33 iops : min= 5, max= 33, avg=13.36, stdev= 7.41, samples=33 lat (msec) : 4=0.42%, 10=14.02%, 20=18.62%, 50=42.05%, 100=23.01% lat (msec) : 250=1.67% cpu : usr=0.08%, sys=8.12%, ctx=976, majf=0, minf=19 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=233,245,0,0 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=973KiB/s (996kB/s), 219KiB/s-283KiB/s (224kB/s-290kB/s), io=21.1MiB (22.2MB), run=16961-22234msec WRITE: bw=1028KiB/s (1053kB/s), 231KiB/s-294KiB/s (237kB/s-301kB/s), io=22.3MiB (23.4MB), run=16961-22234msec 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=153834: Mon Mar 9 20:49:34 2026 read: IOPS=4, BW=4548KiB/s (4657kB/s)(7168KiB/1576msec) clat (usec): min=503, max=220120, avg=122087.67, stdev=66266.49 lat (usec): min=504, max=220122, avg=122089.06, stdev=66266.71 clat percentiles (usec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[106431], | 30.00th=[107480], 40.00th=[107480], 50.00th=[129500], 60.00th=[131597], | 70.00th=[131597], 80.00th=[158335], 90.00th=[219153], 95.00th=[219153], | 99.00th=[219153], 99.50th=[219153], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 2043, max= 5505, per=45.59%, avg=3774.00, stdev=2448.00, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=3, BW=3249KiB/s (3327kB/s)(5120KiB/1576msec); 0 zone resets clat (msec): min=122, max=170, avg=143.73, stdev=21.60 lat (msec): min=122, max=170, avg=143.79, stdev=21.60 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 125], 40.00th=[ 125], 50.00th=[ 142], 60.00th=[ 142], | 70.00th=[ 161], 80.00th=[ 161], 90.00th=[ 171], 95.00th=[ 171], | 99.00th=[ 171], 99.50th=[ 171], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 1376, max= 4087, per=23.57%, avg=2731.50, stdev=1916.97, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (usec) : 750=8.33% lat (msec) : 250=91.67% cpu : usr=0.00%, sys=67.87%, ctx=975, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153835: Mon Mar 9 20:49:34 2026 read: IOPS=0, BW=828KiB/s (848kB/s)(2048KiB/2474msec) clat (usec): min=568, max=328147, avg=164358.06, stdev=231633.94 lat (usec): min=569, max=328148, avg=164359.12, stdev=231633.37 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[ 570], 50.00th=[ 570], 60.00th=[329253], | 70.00th=[329253], 80.00th=[329253], 90.00th=[329253], 95.00th=[329253], | 99.00th=[329253], 99.50th=[329253], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 1367, max= 2043, per=20.60%, avg=1705.00, stdev=478.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=4, BW=4139KiB/s (4238kB/s)(10.0MiB/2474msec); 0 zone resets clat (msec): min=76, max=354, avg=214.35, stdev=103.09 lat (msec): min=76, max=354, avg=214.41, stdev=103.08 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 95], | 30.00th=[ 150], 40.00th=[ 157], 50.00th=[ 171], 60.00th=[ 188], | 70.00th=[ 305], 80.00th=[ 309], 90.00th=[ 338], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 1367, max= 6144, per=33.84%, avg=3921.25, stdev=1959.57, samples=4 iops : min= 1, max= 6, avg= 3.25, stdev= 2.06, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=16.67%, 250=33.33%, 500=41.67% cpu : usr=0.00%, sys=44.93%, ctx=490, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153836: Mon Mar 9 20:49:34 2026 read: IOPS=2, BW=2599KiB/s (2661kB/s)(6144KiB/2364msec) clat (usec): min=537, max=109026, avg=29388.51, stdev=46703.93 lat (usec): min=537, max=109036, avg=29391.00, stdev=46707.04 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[ 594], 50.00th=[ 594], 60.00th=[ 799], | 70.00th=[ 64750], 80.00th=[ 64750], 90.00th=[108528], 95.00th=[108528], | 99.00th=[108528], 99.50th=[108528], 99.90th=[108528], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 4096, max= 6131, per=61.77%, avg=5113.50, stdev=1438.96, samples=2 iops : min= 4, max= 5, avg= 4.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2599KiB/s (2661kB/s)(6144KiB/2364msec); 0 zone resets clat (msec): min=130, max=746, avg=364.18, stdev=229.98 lat (msec): min=130, max=746, avg=364.25, stdev=229.96 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 292], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 2048, max= 4087, per=29.22%, avg=3386.00, stdev=1159.18, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 lat (usec) : 750=25.00%, 1000=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=29.71%, ctx=349, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153837: Mon Mar 9 20:49:34 2026 read: IOPS=2, BW=2384KiB/s (2441kB/s)(5120KiB/2148msec) clat (usec): min=464, max=136833, avg=68238.94, stdev=63493.15 lat (usec): min=466, max=136835, avg=68240.37, stdev=63493.24 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], 20.00th=[ 465], | 30.00th=[ 545], 40.00th=[ 545], 50.00th=[ 99091], 60.00th=[ 99091], | 70.00th=[103285], 80.00th=[103285], 90.00th=[137364], 95.00th=[137364], | 99.00th=[137364], 99.50th=[137364], 99.90th=[137364], 99.95th=[137364], | 99.99th=[137364] bw ( KiB/s): min= 2048, max= 6131, per=49.40%, avg=4089.50, stdev=2887.12, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=3, BW=3337KiB/s (3417kB/s)(7168KiB/2148msec); 0 zone resets clat (msec): min=133, max=512, avg=257.81, stdev=155.57 lat (msec): min=133, max=512, avg=257.86, stdev=155.58 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 136], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 163], 60.00th=[ 264], | 70.00th=[ 264], 80.00th=[ 435], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 2000, max= 4096, per=26.38%, avg=3057.75, stdev=1193.84, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.29, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=8.33% cpu : usr=0.05%, sys=41.78%, ctx=170, 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=8278KiB/s (8477kB/s), 828KiB/s-4548KiB/s (848kB/s-4657kB/s), io=20.0MiB (20.0MB), run=1576-2474msec WRITE: bw=11.3MiB/s (11.9MB/s), 2599KiB/s-4139KiB/s (2661kB/s-4238kB/s), io=28.0MiB (29.4MB), run=1576-2474msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153829: Mon Mar 9 20:49:34 2026 read: IOPS=3, BW=3971KiB/s (4066kB/s)(7168KiB/1805msec) clat (msec): min=41, max=243, avg=109.46, stdev=72.24 lat (msec): min=41, max=243, avg=109.46, stdev=72.24 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 55], | 30.00th=[ 58], 40.00th=[ 58], 50.00th=[ 83], 60.00th=[ 142], | 70.00th=[ 142], 80.00th=[ 146], 90.00th=[ 245], 95.00th=[ 245], | 99.00th=[ 245], 99.50th=[ 245], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 2048, max= 8692, per=74.11%, avg=5370.00, stdev=4698.02, samples=2 iops : min= 2, max= 8, avg= 5.00, stdev= 4.24, samples=2 write: IOPS=2, BW=2837KiB/s (2905kB/s)(5120KiB/1805msec); 0 zone resets clat (msec): min=58, max=333, avg=202.56, stdev=108.63 lat (msec): min=58, max=333, avg=202.63, stdev=108.63 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 58], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 207], 60.00th=[ 207], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 1738, max= 4096, per=25.90%, avg=2627.33, stdev=1281.31, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 50=8.33%, 100=33.33%, 250=41.67%, 500=16.67% cpu : usr=0.06%, sys=20.23%, ctx=89, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153830: Mon Mar 9 20:49:34 2026 read: IOPS=0, BW=725KiB/s (742kB/s)(2048KiB/2826msec) clat (msec): min=42, max=567, avg=305.10, stdev=371.16 lat (msec): min=42, max=567, avg=305.10, stdev=371.16 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 43], 10.00th=[ 43], 20.00th=[ 43], | 30.00th=[ 43], 40.00th=[ 43], 50.00th=[ 43], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1735, max= 2048, per=26.10%, avg=1891.50, stdev=221.32, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3623KiB/s (3710kB/s)(10.0MiB/2826msec); 0 zone resets clat (msec): min=36, max=770, avg=220.52, stdev=251.17 lat (msec): min=36, max=770, avg=220.59, stdev=251.17 clat percentiles (msec): | 1.00th=[ 37], 5.00th=[ 37], 10.00th=[ 37], 20.00th=[ 57], | 30.00th=[ 58], 40.00th=[ 67], 50.00th=[ 80], 60.00th=[ 83], | 70.00th=[ 186], 80.00th=[ 330], 90.00th=[ 542], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 2048, max= 6942, per=36.27%, avg=3679.33, stdev=2825.55, samples=3 iops : min= 2, max= 6, avg= 3.33, stdev= 2.31, samples=3 lat (msec) : 50=16.67%, 100=41.67%, 250=8.33%, 500=8.33%, 750=16.67% lat (msec) : 1000=8.33% cpu : usr=0.00%, sys=15.50%, ctx=88, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153831: Mon Mar 9 20:49:34 2026 read: IOPS=2, BW=2729KiB/s (2795kB/s)(6144KiB/2251msec) clat (msec): min=86, max=205, avg=167.40, stdev=44.48 lat (msec): min=86, max=205, avg=167.40, stdev=44.48 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 174], 50.00th=[ 174], 60.00th=[ 186], | 70.00th=[ 203], 80.00th=[ 203], 90.00th=[ 207], 95.00th=[ 207], | 99.00th=[ 207], 99.50th=[ 207], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 1735, max= 4096, per=34.25%, avg=2481.75, stdev=1086.23, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.26, samples=4 write: IOPS=2, BW=2729KiB/s (2795kB/s)(6144KiB/2251msec); 0 zone resets clat (msec): min=65, max=642, avg=203.38, stdev=219.19 lat (msec): min=65, max=642, avg=203.45, stdev=219.18 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 69], | 30.00th=[ 69], 40.00th=[ 126], 50.00th=[ 126], 60.00th=[ 146], | 70.00th=[ 174], 80.00th=[ 174], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 2048, max= 5206, per=30.56%, avg=3100.67, stdev=1823.27, samples=3 iops : min= 2, max= 5, avg= 3.00, stdev= 1.73, samples=3 lat (msec) : 100=25.00%, 250=66.67%, 750=8.33% cpu : usr=0.09%, sys=12.31%, ctx=71, 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=153832: Mon Mar 9 20:49:34 2026 read: IOPS=2, BW=2248KiB/s (2302kB/s)(5120KiB/2278msec) clat (msec): min=63, max=178, avg=108.22, stdev=43.19 lat (msec): min=63, max=178, avg=108.22, stdev=43.19 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 64], | 30.00th=[ 87], 40.00th=[ 87], 50.00th=[ 103], 60.00th=[ 103], | 70.00th=[ 110], 80.00th=[ 110], 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= 4096, max= 4096, per=56.53%, avg=4096.00, stdev= 0.00, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3147KiB/s (3222kB/s)(7168KiB/2278msec); 0 zone resets clat (msec): min=70, max=665, avg=246.50, stdev=206.44 lat (msec): min=70, max=665, avg=246.56, stdev=206.45 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 108], | 30.00th=[ 114], 40.00th=[ 114], 50.00th=[ 167], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 305], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 2048, max= 5342, per=37.74%, avg=3828.67, stdev=1663.19, samples=3 iops : min= 2, max= 5, avg= 3.67, stdev= 1.53, samples=3 lat (msec) : 100=25.00%, 250=50.00%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=14.98%, ctx=77, 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=7247KiB/s (7421kB/s), 725KiB/s-3971KiB/s (742kB/s-4066kB/s), io=20.0MiB (20.0MB), run=1805-2826msec WRITE: bw=9.91MiB/s (10.4MB/s), 2729KiB/s-3623KiB/s (2795kB/s-3710kB/s), io=28.0MiB (29.4MB), run=1805-2826msec 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=153842: Mon Mar 9 20:49:42 2026 read: IOPS=1, BW=7928KiB/s (8118kB/s)(12.0MiB/1550msec) clat (msec): min=445, max=527, avg=492.70, stdev=42.61 lat (msec): min=445, max=527, avg=492.70, stdev=42.61 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 7613, max= 8192, per=81.66%, avg=7902.50, stdev=409.41, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=57.13%, ctx=2322, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153843: Mon Mar 9 20:49:42 2026 read: IOPS=0, BW=2419KiB/s (2477kB/s)(4096KiB/1693msec) clat (nsec): min=410178k, max=410178k, avg=410178110.00, stdev= 0.00 lat (nsec): min=410180k, max=410180k, avg=410180350.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 7599, max= 7599, per=78.53%, avg=7599.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4839KiB/s (4955kB/s)(8192KiB/1693msec); 0 zone resets clat (msec): min=413, max=760, avg=587.14, stdev=245.45 lat (msec): min=414, max=761, avg=587.92, stdev=245.07 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 414], 10.00th=[ 414], 20.00th=[ 414], | 30.00th=[ 414], 40.00th=[ 414], 50.00th=[ 414], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 8192, max= 8192, per=53.70%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.30%, sys=24.75%, ctx=871, 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=153844: Mon Mar 9 20:49:42 2026 write: IOPS=1, BW=5721KiB/s (5858kB/s)(12.0MiB/2148msec); 0 zone resets clat (msec): min=598, max=862, avg=690.25, stdev=149.39 lat (msec): min=598, max=864, avg=690.95, stdev=150.00 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 8175, max= 8192, per=53.64%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.09%, sys=27.39%, ctx=125, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153845: Mon Mar 9 20:49:42 2026 write: IOPS=1, BW=6529KiB/s (6686kB/s)(12.0MiB/1882msec); 0 zone resets clat (msec): min=175, max=1419, avg=599.06, stdev=710.58 lat (msec): min=175, max=1419, avg=599.49, stdev=710.64 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 203], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min=15283, max=15283, per=100.00%, avg=15283.00, 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=0.16%, sys=18.55%, ctx=97, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=9677KiB/s (9910kB/s), 2419KiB/s-7928KiB/s (2477kB/s-8118kB/s), io=16.0MiB (16.8MB), run=1550-1693msec WRITE: bw=14.9MiB/s (15.6MB/s), 4839KiB/s-6529KiB/s (4955kB/s-6686kB/s), io=32.0MiB (33.6MB), run=1693-2148msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153847: Mon Mar 9 20:49:42 2026 read: IOPS=1, BW=5297KiB/s (5424kB/s)(12.0MiB/2320msec) clat (msec): min=222, max=1392, avg=756.62, stdev=591.57 lat (msec): min=222, max=1392, avg=756.62, stdev=591.57 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, 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=11.00%, ctx=78, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153848: Mon Mar 9 20:49:42 2026 read: IOPS=0, BW=1819KiB/s (1862kB/s)(4096KiB/2252msec) clat (nsec): min=1139.2M, max=1139.2M, avg=1139237032.00, stdev= 0.00 lat (nsec): min=1139.2M, max=1139.2M, avg=1139238457.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1133], 5.00th=[ 1133], 10.00th=[ 1133], 20.00th=[ 1133], | 30.00th=[ 1133], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3638KiB/s (3725kB/s)(8192KiB/2252msec); 0 zone resets clat (msec): min=305, max=763, avg=534.68, stdev=324.25 lat (msec): min=305, max=764, avg=535.00, stdev=324.17 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=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 8159, max= 8159, per=56.08%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=14.26%, ctx=74, 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=153849: Mon Mar 9 20:49:42 2026 write: IOPS=1, BW=5545KiB/s (5678kB/s)(12.0MiB/2216msec); 0 zone resets clat (msec): min=313, max=988, avg=723.18, stdev=359.88 lat (msec): min=313, max=989, avg=723.84, stdev=360.21 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7861, max= 8159, per=55.05%, avg=8010.00, stdev=210.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.09%, sys=16.61%, ctx=97, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153850: Mon Mar 9 20:49:42 2026 write: IOPS=1, BW=6187KiB/s (6336kB/s)(12.0MiB/1986msec); 0 zone resets clat (msec): min=322, max=1284, avg=657.16, stdev=543.79 lat (msec): min=323, max=1285, avg=657.56, stdev=543.87 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 363], | 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= 7353, max= 7861, per=52.28%, avg=7607.00, stdev=359.21, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.10%, sys=14.41%, ctx=87, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=7062KiB/s (7232kB/s), 1819KiB/s-5297KiB/s (1862kB/s-5424kB/s), io=16.0MiB (16.8MB), run=2252-2320msec WRITE: bw=14.2MiB/s (14.9MB/s), 3638KiB/s-6187KiB/s (3725kB/s-6336kB/s), io=32.0MiB (33.6MB), run=1986-2252msec