== sanity test 398b: DIO and buffer IO race ============== 12:24:08 (1781627048) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.91918 s, 17.2 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=180271: Tue Jun 16 12:25:17 2026 read: IOPS=25, BW=101KiB/s (103kB/s)(5992KiB/59420msec) clat (usec): min=56, max=707196, avg=21823.13, stdev=21442.35 lat (usec): min=57, max=707197, avg=21824.14, stdev=21442.41 clat percentiles (usec): | 1.00th=[ 130], 5.00th=[ 7963], 10.00th=[ 9896], 20.00th=[ 12256], | 30.00th=[ 14746], 40.00th=[ 16712], 50.00th=[ 19006], 60.00th=[ 21365], | 70.00th=[ 24511], 80.00th=[ 28967], 90.00th=[ 35390], 95.00th=[ 42206], | 99.00th=[ 65274], 99.50th=[ 78119], 99.90th=[135267], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 184, per=24.77%, avg=100.08, stdev=29.24, samples=118 iops : min= 1, max= 46, avg=24.59, stdev= 7.30, samples=118 write: IOPS=26, BW=106KiB/s (109kB/s)(6296KiB/59420msec); 0 zone resets clat (usec): min=868, max=87171, avg=16850.55, stdev=13282.93 lat (usec): min=868, max=87173, avg=16851.87, stdev=13282.86 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 2474], 10.00th=[ 3195], 20.00th=[ 4424], | 30.00th=[ 7308], 40.00th=[10552], 50.00th=[13566], 60.00th=[17433], | 70.00th=[22152], 80.00th=[27395], 90.00th=[34866], 95.00th=[42206], | 99.00th=[56886], 99.50th=[66323], 99.90th=[79168], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 39, max= 208, per=25.09%, avg=106.12, stdev=33.97, samples=117 iops : min= 9, max= 52, avg=26.11, stdev= 8.50, samples=117 lat (usec) : 100=0.26%, 250=0.55%, 500=0.10%, 1000=0.23% lat (msec) : 2=1.20%, 4=7.58%, 10=14.91%, 20=35.12%, 50=37.53% lat (msec) : 100=2.41%, 250=0.07%, 750=0.03% cpu : usr=0.15%, sys=21.37%, ctx=9161, 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=180274: Tue Jun 16 12:25:17 2026 read: IOPS=25, BW=102KiB/s (105kB/s)(5940KiB/58063msec) clat (usec): min=39, max=90582, avg=20845.26, stdev=10936.23 lat (usec): min=39, max=90583, avg=20846.93, stdev=10936.64 clat percentiles (usec): | 1.00th=[ 112], 5.00th=[ 8291], 10.00th=[ 9896], 20.00th=[12256], | 30.00th=[14353], 40.00th=[16450], 50.00th=[19006], 60.00th=[21103], | 70.00th=[24249], 80.00th=[27395], 90.00th=[35390], 95.00th=[42206], | 99.00th=[55837], 99.50th=[63177], 99.90th=[78119], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 7, max= 176, per=25.20%, avg=101.81, stdev=28.90, samples=115 iops : min= 1, max= 44, avg=25.03, stdev= 7.33, samples=115 write: IOPS=27, BW=109KiB/s (112kB/s)(6348KiB/58063msec); 0 zone resets clat (usec): min=721, max=699270, avg=16937.17, stdev=21825.02 lat (usec): min=721, max=699271, avg=16938.50, stdev=21825.06 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 2409], 10.00th=[ 2999], 20.00th=[ 4228], | 30.00th=[ 6849], 40.00th=[ 10552], 50.00th=[ 13435], 60.00th=[ 16909], | 70.00th=[ 20841], 80.00th=[ 26608], 90.00th=[ 34341], 95.00th=[ 42730], | 99.00th=[ 62653], 99.50th=[ 67634], 99.90th=[ 91751], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 48, max= 207, per=25.87%, avg=109.44, stdev=31.62, samples=114 iops : min= 12, max= 51, avg=26.94, stdev= 7.92, samples=114 lat (usec) : 50=0.03%, 100=0.26%, 250=0.75%, 750=0.07%, 1000=0.13% lat (msec) : 2=1.50%, 4=7.98%, 10=13.96%, 20=37.14%, 50=36.00% lat (msec) : 100=2.15%, 750=0.03% cpu : usr=0.15%, sys=21.70%, ctx=8961, 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=180275: Tue Jun 16 12:25:17 2026 read: IOPS=25, BW=102KiB/s (104kB/s)(6028KiB/59148msec) clat (usec): min=43, max=90986, avg=20881.63, stdev=11239.19 lat (usec): min=44, max=90987, avg=20883.76, stdev=11238.19 clat percentiles (usec): | 1.00th=[ 131], 5.00th=[ 8225], 10.00th=[ 9765], 20.00th=[11994], | 30.00th=[14091], 40.00th=[16319], 50.00th=[18482], 60.00th=[21103], | 70.00th=[24511], 80.00th=[28967], 90.00th=[35390], 95.00th=[41681], | 99.00th=[58983], 99.50th=[66323], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 40, max= 167, per=25.25%, avg=102.02, stdev=29.89, samples=116 iops : min= 10, max= 41, avg=25.08, stdev= 7.43, samples=116 write: IOPS=26, BW=106KiB/s (108kB/s)(6260KiB/59148msec); 0 zone resets clat (usec): min=885, max=715312, avg=17540.80, stdev=22158.92 lat (usec): min=887, max=715314, avg=17547.14, stdev=22158.52 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 2409], 10.00th=[ 3064], 20.00th=[ 4293], | 30.00th=[ 8029], 40.00th=[ 11469], 50.00th=[ 14222], 60.00th=[ 17433], | 70.00th=[ 21627], 80.00th=[ 27395], 90.00th=[ 35914], 95.00th=[ 42730], | 99.00th=[ 61604], 99.50th=[ 68682], 99.90th=[ 94897], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 39, max= 184, per=24.97%, avg=105.61, stdev=31.91, samples=116 iops : min= 9, max= 46, avg=25.97, stdev= 8.03, samples=116 lat (usec) : 50=0.07%, 100=0.23%, 250=0.62%, 500=0.07%, 1000=0.16% lat (msec) : 2=1.50%, 4=7.58%, 10=12.96%, 20=38.09%, 50=36.65% lat (msec) : 100=2.05%, 750=0.03% cpu : usr=0.09%, sys=21.34%, ctx=9024, 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=180277: Tue Jun 16 12:25:17 2026 read: IOPS=26, BW=104KiB/s (107kB/s)(6052KiB/58066msec) clat (usec): min=53, max=94367, avg=20659.98, stdev=11057.94 lat (usec): min=54, max=94367, avg=20660.90, stdev=11058.01 clat percentiles (usec): | 1.00th=[ 114], 5.00th=[ 8160], 10.00th=[ 9634], 20.00th=[11863], | 30.00th=[14222], 40.00th=[16450], 50.00th=[18744], 60.00th=[21103], | 70.00th=[23987], 80.00th=[28181], 90.00th=[34866], 95.00th=[41157], | 99.00th=[58459], 99.50th=[63701], 99.90th=[76022], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 48, max= 168, per=25.95%, avg=104.82, stdev=24.56, samples=114 iops : min= 12, max= 42, avg=25.78, stdev= 6.11, samples=114 write: IOPS=26, BW=107KiB/s (110kB/s)(6236KiB/58066msec); 0 zone resets clat (usec): min=836, max=696542, avg=17047.77, stdev=21988.78 lat (usec): min=837, max=696543, avg=17050.47, stdev=21988.67 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 2212], 10.00th=[ 2933], 20.00th=[ 4424], | 30.00th=[ 6849], 40.00th=[ 10421], 50.00th=[ 13435], 60.00th=[ 16712], | 70.00th=[ 20841], 80.00th=[ 26608], 90.00th=[ 34866], 95.00th=[ 43779], | 99.00th=[ 58983], 99.50th=[ 70779], 99.90th=[ 89654], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 22, max= 207, per=25.31%, avg=107.08, stdev=34.11, samples=115 iops : min= 5, max= 51, avg=26.35, stdev= 8.52, samples=115 lat (usec) : 100=0.39%, 250=0.94%, 500=0.03%, 1000=0.10% lat (msec) : 2=1.69%, 4=7.65%, 10=14.45%, 20=36.85%, 50=35.42% lat (msec) : 100=2.44%, 750=0.03% cpu : usr=0.12%, sys=21.48%, ctx=9210, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=404KiB/s (414kB/s), 101KiB/s-104KiB/s (103kB/s-107kB/s), io=23.4MiB (24.6MB), run=58063-59420msec WRITE: bw=423KiB/s (433kB/s), 106KiB/s-109KiB/s (108kB/s-112kB/s), io=24.6MiB (25.7MB), run=58063-59420msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180272: Tue Jun 16 12:25:28 2026 read: IOPS=21, BW=85.1KiB/s (87.1kB/s)(5992KiB/70450msec) clat (msec): min=2, max=709, avg=19.55, stdev=23.70 lat (msec): min=2, max=709, avg=19.55, stdev=23.70 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 41], 95.00th=[ 52], | 99.00th=[ 79], 99.50th=[ 85], 99.90th=[ 117], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 15, max= 256, per=25.00%, avg=85.01, stdev=53.58, samples=139 iops : min= 3, max= 64, avg=20.82, stdev=13.54, samples=139 write: IOPS=22, BW=89.4KiB/s (91.5kB/s)(6296KiB/70450msec); 0 zone resets clat (msec): min=5, max=158, avg=26.03, stdev=16.94 lat (msec): min=5, max=158, avg=26.04, stdev=16.94 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 40], 90.00th=[ 48], 95.00th=[ 58], | 99.00th=[ 79], 99.50th=[ 94], 99.90th=[ 140], 99.95th=[ 159], | 99.99th=[ 159] bw ( KiB/s): min= 23, max= 256, per=25.09%, avg=89.32, stdev=53.24, samples=139 iops : min= 5, max= 64, avg=21.90, stdev=13.44, samples=139 lat (msec) : 4=0.42%, 10=21.91%, 20=35.71%, 50=34.99%, 100=6.67% lat (msec) : 250=0.26%, 750=0.03% cpu : usr=0.11%, sys=10.75%, ctx=6173, 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=180273: Tue Jun 16 12:25:28 2026 read: IOPS=21, BW=84.6KiB/s (86.7kB/s)(5940KiB/70171msec) clat (msec): min=3, max=705, avg=19.21, stdev=23.22 lat (msec): min=3, max=705, avg=19.22, stdev=23.22 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 29], 90.00th=[ 41], 95.00th=[ 52], | 99.00th=[ 68], 99.50th=[ 81], 99.90th=[ 96], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 8, max= 272, per=24.86%, avg=84.51, stdev=53.57, samples=138 iops : min= 2, max= 68, avg=20.70, stdev=13.53, samples=138 write: IOPS=22, BW=90.5KiB/s (92.6kB/s)(6348KiB/70171msec); 0 zone resets clat (msec): min=5, max=140, avg=26.11, stdev=17.09 lat (msec): min=5, max=140, avg=26.11, stdev=17.09 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 39], 90.00th=[ 49], 95.00th=[ 60], | 99.00th=[ 85], 99.50th=[ 95], 99.90th=[ 131], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 31, max= 280, per=25.25%, avg=89.89, stdev=50.98, samples=138 iops : min= 7, max= 70, avg=22.04, stdev=12.87, samples=138 lat (msec) : 4=0.33%, 10=21.35%, 20=36.49%, 50=34.31%, 100=7.32% lat (msec) : 250=0.16%, 750=0.03% cpu : usr=0.11%, sys=10.91%, ctx=6167, 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=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=180276: Tue Jun 16 12:25:28 2026 read: IOPS=21, BW=85.6KiB/s (87.7kB/s)(6028KiB/70394msec) clat (msec): min=3, max=144, avg=18.93, stdev=15.74 lat (msec): min=3, max=144, avg=18.93, stdev=15.74 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 22], 80.00th=[ 28], 90.00th=[ 40], 95.00th=[ 50], | 99.00th=[ 73], 99.50th=[ 92], 99.90th=[ 126], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 16, max= 256, per=25.24%, avg=85.81, stdev=53.99, samples=139 iops : min= 4, max= 64, avg=21.02, stdev=13.62, samples=139 write: IOPS=22, BW=88.9KiB/s (91.1kB/s)(6260KiB/70394msec); 0 zone resets clat (msec): min=5, max=711, avg=26.63, stdev=24.54 lat (msec): min=5, max=711, avg=26.63, stdev=24.54 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 39], 90.00th=[ 51], 95.00th=[ 61], | 99.00th=[ 87], 99.50th=[ 102], 99.90th=[ 140], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 16, max= 256, per=25.01%, avg=89.04, stdev=54.47, samples=139 iops : min= 4, max= 64, avg=21.83, stdev=13.76, samples=139 lat (msec) : 4=0.29%, 10=21.68%, 20=35.32%, 50=35.38%, 100=6.87% lat (msec) : 250=0.42%, 750=0.03% cpu : usr=0.11%, sys=10.87%, ctx=6244, 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=180278: Tue Jun 16 12:25:28 2026 read: IOPS=21, BW=86.0KiB/s (88.1kB/s)(6052KiB/70350msec) clat (msec): min=3, max=135, avg=18.49, stdev=15.29 lat (msec): min=3, max=135, avg=18.50, stdev=15.29 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 41], 95.00th=[ 51], | 99.00th=[ 75], 99.50th=[ 83], 99.90th=[ 122], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 16, max= 256, per=25.39%, avg=86.32, stdev=52.73, samples=139 iops : min= 4, max= 64, avg=21.15, stdev=13.32, samples=139 write: IOPS=22, BW=88.6KiB/s (90.8kB/s)(6236KiB/70350msec); 0 zone resets clat (msec): min=5, max=710, avg=27.05, stdev=24.47 lat (msec): min=5, max=710, avg=27.05, stdev=24.47 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 40], 90.00th=[ 51], 95.00th=[ 61], | 99.00th=[ 82], 99.50th=[ 92], 99.90th=[ 161], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 24, max= 264, per=24.96%, avg=88.85, stdev=52.95, samples=139 iops : min= 6, max= 66, avg=21.78, stdev=13.37, samples=139 lat (msec) : 4=0.23%, 10=22.14%, 20=35.61%, 50=34.31%, 100=7.49% lat (msec) : 250=0.20%, 750=0.03% cpu : usr=0.11%, sys=10.86%, ctx=6198, 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=341KiB/s (349kB/s), 84.6KiB/s-86.0KiB/s (86.7kB/s-88.1kB/s), io=23.4MiB (24.6MB), run=70171-70450msec WRITE: bw=357KiB/s (365kB/s), 88.6KiB/s-90.5KiB/s (90.8kB/s-92.6kB/s), io=24.6MiB (25.7MB), run=70171-70450msec 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 fio: pid=180308, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=180307: Tue Jun 16 12:25:49 2026 read: IOPS=24, BW=397KiB/s (407kB/s)(5920KiB/14902msec) clat (usec): min=53, max=65067, avg=20334.71, stdev=10821.12 lat (usec): min=54, max=65069, avg=20335.46, stdev=10821.14 clat percentiles (usec): | 1.00th=[ 75], 5.00th=[ 167], 10.00th=[ 9241], 20.00th=[12125], | 30.00th=[14484], 40.00th=[16909], 50.00th=[19268], 60.00th=[21365], | 70.00th=[23987], 80.00th=[27919], 90.00th=[33162], 95.00th=[39584], | 99.00th=[60556], 99.50th=[62653], 99.90th=[65274], 99.95th=[65274], | 99.99th=[65274] bw ( KiB/s): min= 223, max= 567, per=24.24%, avg=389.52, stdev=73.36, samples=29 iops : min= 13, max= 35, avg=23.90, stdev= 4.61, samples=29 write: IOPS=26, BW=427KiB/s (438kB/s)(6368KiB/14902msec); 0 zone resets clat (usec): min=1725, max=80992, avg=18450.33, stdev=12804.76 lat (usec): min=1727, max=80995, avg=18451.79, stdev=12804.79 clat percentiles (usec): | 1.00th=[ 2638], 5.00th=[ 3916], 10.00th=[ 4752], 20.00th=[ 5997], | 30.00th=[10683], 40.00th=[13173], 50.00th=[15795], 60.00th=[19268], | 70.00th=[22676], 80.00th=[28705], 90.00th=[34341], 95.00th=[43779], | 99.00th=[58459], 99.50th=[65274], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 192, max= 637, per=25.05%, avg=423.52, stdev=122.00, samples=29 iops : min= 12, max= 39, avg=26.03, stdev= 7.49, samples=29 lat (usec) : 100=0.91%, 250=1.95% lat (msec) : 2=0.26%, 4=2.47%, 10=15.10%, 20=38.41%, 50=38.41% lat (msec) : 100=2.47% cpu : usr=0.07%, sys=24.94%, ctx=2736, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180309: Tue Jun 16 12:25:49 2026 read: IOPS=24, BW=392KiB/s (402kB/s)(5744KiB/14643msec) clat (usec): min=49, max=64232, avg=19838.08, stdev=9932.55 lat (usec): min=50, max=64234, avg=19839.16, stdev=9932.83 clat percentiles (usec): | 1.00th=[ 104], 5.00th=[ 6652], 10.00th=[10028], 20.00th=[12387], | 30.00th=[14615], 40.00th=[16909], 50.00th=[19006], 60.00th=[21103], | 70.00th=[23200], 80.00th=[26084], 90.00th=[32375], 95.00th=[37487], | 99.00th=[57934], 99.50th=[64226], 99.90th=[64226], 99.95th=[64226], | 99.99th=[64226] bw ( KiB/s): min= 208, max= 576, per=24.49%, avg=393.62, stdev=101.09, samples=29 iops : min= 13, max= 36, avg=24.17, stdev= 6.29, samples=29 write: IOPS=27, BW=447KiB/s (458kB/s)(6544KiB/14643msec); 0 zone resets clat (usec): min=1685, max=77593, avg=18137.05, stdev=12819.81 lat (usec): min=1686, max=77596, avg=18138.63, stdev=12819.90 clat percentiles (usec): | 1.00th=[ 3392], 5.00th=[ 4359], 10.00th=[ 4817], 20.00th=[ 6194], | 30.00th=[ 9110], 40.00th=[12125], 50.00th=[15270], 60.00th=[18220], | 70.00th=[22414], 80.00th=[29230], 90.00th=[36439], 95.00th=[41681], | 99.00th=[54789], 99.50th=[57934], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 254, max= 734, per=26.44%, avg=447.10, stdev=115.76, samples=29 iops : min= 15, max= 45, avg=27.52, stdev= 7.25, samples=29 lat (usec) : 50=0.13%, 100=0.13%, 250=1.82% lat (msec) : 2=0.26%, 4=1.17%, 10=18.36%, 20=37.50%, 50=38.93% lat (msec) : 100=1.69% cpu : usr=0.07%, sys=25.48%, ctx=2853, 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=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=180311: Tue Jun 16 12:25:49 2026 read: IOPS=26, BW=424KiB/s (434kB/s)(6256KiB/14757msec) clat (usec): min=63, max=99833, avg=21074.82, stdev=11445.87 lat (usec): min=64, max=99834, avg=21075.73, stdev=11445.92 clat percentiles (usec): | 1.00th=[ 90], 5.00th=[ 7832], 10.00th=[ 10028], 20.00th=[ 12780], | 30.00th=[ 14615], 40.00th=[ 16712], 50.00th=[ 19006], 60.00th=[ 22414], | 70.00th=[ 25035], 80.00th=[ 28443], 90.00th=[ 34341], 95.00th=[ 43254], | 99.00th=[ 56361], 99.50th=[ 60031], 99.90th=[100140], 99.95th=[100140], | 99.99th=[100140] bw ( KiB/s): min= 223, max= 640, per=26.46%, avg=425.17, stdev=117.62, samples=29 iops : min= 13, max= 40, avg=26.14, stdev= 7.34, samples=29 write: IOPS=25, BW=409KiB/s (419kB/s)(6032KiB/14757msec); 0 zone resets clat (usec): min=1276, max=100947, avg=17060.18, stdev=12171.41 lat (usec): min=1277, max=100949, avg=17062.00, stdev=12171.18 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 4228], 10.00th=[ 4621], 20.00th=[ 6128], | 30.00th=[ 8717], 40.00th=[ 11600], 50.00th=[ 15008], 60.00th=[ 17957], | 70.00th=[ 21627], 80.00th=[ 26084], 90.00th=[ 32637], 95.00th=[ 38011], | 99.00th=[ 53740], 99.50th=[ 70779], 99.90th=[101188], 99.95th=[101188], | 99.99th=[101188] bw ( KiB/s): min= 224, max= 544, per=23.83%, avg=403.03, stdev=91.93, samples=29 iops : min= 14, max= 34, avg=24.72, stdev= 5.78, samples=29 lat (usec) : 100=0.78%, 250=1.43% lat (msec) : 2=0.65%, 4=1.30%, 10=17.84%, 20=36.98%, 50=38.80% lat (msec) : 100=2.08%, 250=0.13% cpu : usr=0.09%, sys=24.71%, ctx=2783, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180313: Tue Jun 16 12:25:49 2026 read: IOPS=26, BW=419KiB/s (429kB/s)(6032KiB/14394msec) clat (usec): min=34, max=62077, avg=19828.43, stdev=10895.04 lat (usec): min=35, max=62078, avg=19829.88, stdev=10895.44 clat percentiles (usec): | 1.00th=[ 92], 5.00th=[ 124], 10.00th=[ 8586], 20.00th=[12518], | 30.00th=[14353], 40.00th=[16319], 50.00th=[18482], 60.00th=[21103], | 70.00th=[23462], 80.00th=[28443], 90.00th=[33162], 95.00th=[40109], | 99.00th=[53740], 99.50th=[60031], 99.90th=[62129], 99.95th=[62129], | 99.99th=[62129] bw ( KiB/s): min= 191, max= 672, per=25.64%, avg=412.11, stdev=107.03, samples=28 iops : min= 11, max= 42, avg=25.32, stdev= 6.76, samples=28 write: IOPS=27, BW=435KiB/s (445kB/s)(6256KiB/14394msec); 0 zone resets clat (usec): min=1318, max=78759, avg=17481.92, stdev=13233.90 lat (usec): min=1320, max=78761, avg=17483.39, stdev=13233.97 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 4113], 10.00th=[ 4883], 20.00th=[ 6128], | 30.00th=[ 8586], 40.00th=[10945], 50.00th=[13698], 60.00th=[16909], | 70.00th=[21890], 80.00th=[27919], 90.00th=[34866], 95.00th=[43254], | 99.00th=[69731], 99.50th=[77071], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 223, max= 640, per=25.64%, avg=433.57, stdev=109.43, samples=28 iops : min= 13, max= 40, avg=26.68, stdev= 6.89, samples=28 lat (usec) : 50=0.13%, 100=1.04%, 250=2.34%, 500=0.13%, 750=0.26% lat (msec) : 2=0.78%, 4=1.43%, 10=17.32%, 20=38.15%, 50=36.59% lat (msec) : 100=1.82% cpu : usr=0.10%, sys=25.14%, ctx=2785, 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=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=1607KiB/s (1646kB/s), 392KiB/s-424KiB/s (402kB/s-434kB/s), io=23.4MiB (24.5MB), run=14394-14902msec WRITE: bw=1691KiB/s (1732kB/s), 409KiB/s-447KiB/s (419kB/s-458kB/s), io=24.6MiB (25.8MB), run=14394-14902msec fio: pid=180310, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=180306: Tue Jun 16 12:25:51 2026 read: IOPS=22, BW=355KiB/s (363kB/s)(5920KiB/16686msec) clat (usec): min=3441, max=96036, avg=18212.17, stdev=14929.33 lat (usec): min=3441, max=96037, avg=18213.66, stdev=14929.30 clat percentiles (usec): | 1.00th=[ 3589], 5.00th=[ 4146], 10.00th=[ 4948], 20.00th=[ 6194], | 30.00th=[ 8586], 40.00th=[10683], 50.00th=[12911], 60.00th=[16319], | 70.00th=[20841], 80.00th=[27132], 90.00th=[40633], 95.00th=[49546], | 99.00th=[63177], 99.50th=[70779], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 159, max= 1184, per=27.11%, avg=348.36, stdev=241.63, samples=33 iops : min= 9, max= 74, avg=21.21, stdev=15.13, samples=33 write: IOPS=23, BW=382KiB/s (391kB/s)(6368KiB/16686msec); 0 zone resets clat (msec): min=5, max=109, avg=24.80, stdev=17.39 lat (msec): min=5, max=109, avg=24.80, stdev=17.39 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 39], 90.00th=[ 47], 95.00th=[ 59], | 99.00th=[ 93], 99.50th=[ 105], 99.90th=[ 110], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 95, max= 1216, per=28.21%, avg=377.67, stdev=246.51, samples=33 iops : min= 5, max= 76, avg=23.03, stdev=15.44, samples=33 lat (msec) : 4=1.82%, 10=27.34%, 20=29.04%, 50=35.55%, 100=5.86% lat (msec) : 250=0.39% cpu : usr=0.11%, sys=12.18%, ctx=1573, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=180308: Tue Jun 16 12:25:51 2026 read: IOPS=17, BW=283KiB/s (290kB/s)(4240KiB/14993msec) clat (usec): min=6016, max=92489, avg=23181.61, stdev=15466.18 lat (usec): min=6017, max=92489, avg=23182.56, stdev=15466.26 clat percentiles (usec): | 1.00th=[ 6456], 5.00th=[ 8225], 10.00th=[ 9372], 20.00th=[11338], | 30.00th=[12780], 40.00th=[14353], 50.00th=[16712], 60.00th=[21365], | 70.00th=[28443], 80.00th=[33817], 90.00th=[44827], 95.00th=[51119], | 99.00th=[89654], 99.50th=[90702], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 159, max= 509, per=21.18%, avg=272.21, stdev=80.28, samples=29 iops : min= 9, max= 31, avg=16.45, stdev= 5.02, samples=29 write: IOPS=19, BW=304KiB/s (311kB/s)(4560KiB/14993msec); 0 zone resets clat (msec): min=6, max=102, avg=30.95, stdev=16.62 lat (msec): min=6, max=102, avg=30.96, stdev=16.62 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 44], 90.00th=[ 53], 95.00th=[ 61], | 99.00th=[ 90], 99.50th=[ 95], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 160, max= 479, per=22.75%, avg=304.66, stdev=88.48, samples=29 iops : min= 10, max= 29, avg=18.45, stdev= 5.40, samples=29 lat (msec) : 10=6.53%, 20=37.75%, 50=46.46%, 100=8.89%, 250=0.18% cpu : usr=0.07%, sys=11.69%, ctx=1136, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=266,285,0,0 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=180310: Tue Jun 16 12:25:51 2026 read: IOPS=21, BW=340KiB/s (348kB/s)(5424KiB/15949msec) clat (msec): min=3, max=102, avg=20.32, stdev=14.23 lat (msec): min=3, max=102, avg=20.32, stdev=14.23 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 19], | 70.00th=[ 22], 80.00th=[ 31], 90.00th=[ 43], 95.00th=[ 49], | 99.00th=[ 69], 99.50th=[ 80], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 159, max= 894, per=25.27%, avg=324.68, stdev=145.82, samples=31 iops : min= 9, max= 55, avg=19.71, stdev= 9.15, samples=31 write: IOPS=20, BW=334KiB/s (342kB/s)(5328KiB/15949msec); 0 zone resets clat (msec): min=5, max=108, avg=26.81, stdev=17.32 lat (msec): min=5, max=108, avg=26.81, stdev=17.32 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 41], 90.00th=[ 51], 95.00th=[ 61], | 99.00th=[ 83], 99.50th=[ 96], 99.90th=[ 109], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 128, max= 990, per=24.07%, avg=322.35, stdev=153.24, samples=31 iops : min= 8, max= 61, avg=19.58, stdev= 9.51, samples=31 lat (msec) : 4=0.30%, 10=16.64%, 20=37.00%, 50=39.23%, 100=6.39% lat (msec) : 250=0.30% cpu : usr=0.06%, sys=12.15%, ctx=1420, 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=340,333,0,0 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=180312: Tue Jun 16 12:25:51 2026 read: IOPS=22, BW=359KiB/s (367kB/s)(6032KiB/16809msec) clat (msec): min=3, max=102, avg=17.86, stdev=14.63 lat (msec): min=3, max=102, avg=17.86, stdev=14.63 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 40], 95.00th=[ 51], | 99.00th=[ 63], 99.50th=[ 71], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 127, max= 1213, per=26.90%, avg=345.70, stdev=240.42, samples=33 iops : min= 7, max= 75, avg=21.03, stdev=15.01, samples=33 write: IOPS=23, BW=372KiB/s (381kB/s)(6256KiB/16809msec); 0 zone resets clat (msec): min=4, max=109, avg=25.59, stdev=18.37 lat (msec): min=4, max=109, avg=25.59, stdev=18.37 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 41], 90.00th=[ 51], 95.00th=[ 62], | 99.00th=[ 88], 99.50th=[ 103], 99.90th=[ 110], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 159, max= 1248, per=27.04%, avg=362.03, stdev=240.59, samples=33 iops : min= 9, max= 78, avg=22.06, stdev=15.10, samples=33 lat (msec) : 4=1.43%, 10=28.39%, 20=29.30%, 50=33.07%, 100=7.42% lat (msec) : 250=0.39% cpu : usr=0.06%, sys=12.15%, ctx=1644, 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=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=1286KiB/s (1317kB/s), 283KiB/s-359KiB/s (290kB/s-367kB/s), io=21.1MiB (22.1MB), run=14993-16809msec WRITE: bw=1339KiB/s (1371kB/s), 304KiB/s-382KiB/s (311kB/s-391kB/s), io=21.0MiB (23.1MB), run=14993-16809msec 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=180320: Tue Jun 16 12:26:00 2026 read: IOPS=1, BW=2008KiB/s (2057kB/s)(7168KiB/3569msec) clat (msec): min=58, max=366, avg=144.33, stdev=107.95 lat (msec): min=58, max=366, avg=144.34, stdev=107.95 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 63], | 30.00th=[ 70], 40.00th=[ 70], 50.00th=[ 127], 60.00th=[ 163], | 70.00th=[ 163], 80.00th=[ 165], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 3820, max= 5408, per=90.93%, avg=4614.00, stdev=1122.89, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1435KiB/s (1469kB/s)(5120KiB/3569msec); 0 zone resets clat (msec): min=112, max=1566, avg=505.20, stdev=598.60 lat (msec): min=112, max=1566, avg=505.27, stdev=598.61 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 253], 40.00th=[ 253], 50.00th=[ 255], 60.00th=[ 255], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 1910, max= 2048, per=28.14%, avg=1999.00, stdev=77.21, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (msec) : 100=25.00%, 250=33.33%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=13.79%, ctx=95, 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=180321: Tue Jun 16 12:26:00 2026 read: IOPS=0, BW=507KiB/s (520kB/s)(2048KiB/4036msec) clat (usec): min=78541, max=78969, avg=78755.47, stdev=303.19 lat (usec): min=78542, max=78972, avg=78757.09, stdev=304.06 clat percentiles (usec): | 1.00th=[78119], 5.00th=[78119], 10.00th=[78119], 20.00th=[78119], | 30.00th=[78119], 40.00th=[78119], 50.00th=[78119], 60.00th=[79168], | 70.00th=[79168], 80.00th=[79168], 90.00th=[79168], 95.00th=[79168], | 99.00th=[79168], 99.50th=[79168], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 1799, max= 2048, per=37.91%, avg=1923.50, stdev=176.07, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2537KiB/s (2598kB/s)(10.0MiB/4036msec); 0 zone resets clat (msec): min=36, max=1625, avg=383.68, stdev=462.50 lat (msec): min=36, max=1626, avg=383.77, stdev=462.53 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 36], 10.00th=[ 36], 20.00th=[ 99], | 30.00th=[ 122], 40.00th=[ 129], 50.00th=[ 222], 60.00th=[ 305], | 70.00th=[ 376], 80.00th=[ 447], 90.00th=[ 477], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 1799, max= 4096, per=33.48%, avg=2378.40, stdev=965.61, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 lat (msec) : 50=8.33%, 100=25.00%, 250=25.00%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=13.21%, ctx=110, 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=180322: Tue Jun 16 12:26:00 2026 read: IOPS=1, BW=1588KiB/s (1626kB/s)(6144KiB/3869msec) clat (msec): min=63, max=1368, avg=365.51, stdev=497.61 lat (msec): min=63, max=1368, avg=365.51, stdev=497.61 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 82], | 30.00th=[ 82], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 245], | 70.00th=[ 245], 80.00th=[ 245], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 1910, max= 6144, per=66.36%, avg=3367.33, stdev=2405.65, samples=3 iops : min= 1, max= 6, avg= 3.00, stdev= 2.65, samples=3 write: IOPS=1, BW=1588KiB/s (1626kB/s)(6144KiB/3869msec); 0 zone resets clat (msec): min=95, max=789, avg=271.71, stdev=259.89 lat (msec): min=95, max=789, avg=271.78, stdev=259.90 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 132], | 30.00th=[ 132], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 182], | 70.00th=[ 266], 80.00th=[ 266], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 2035, max= 3611, per=34.28%, avg=2435.50, stdev=783.69, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 100=25.00%, 250=50.00%, 500=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=13.50%, ctx=142, 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=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=180323: Tue Jun 16 12:26:00 2026 read: IOPS=2, BW=2453KiB/s (2512kB/s)(5120KiB/2087msec) clat (msec): min=70, max=364, avg=174.54, stdev=120.47 lat (msec): min=70, max=364, avg=174.55, stdev=120.47 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 71], | 30.00th=[ 71], 40.00th=[ 71], 50.00th=[ 182], 60.00th=[ 182], | 70.00th=[ 186], 80.00th=[ 186], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 3820, max= 4096, per=78.01%, avg=3958.00, stdev=195.16, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3435KiB/s (3517kB/s)(7168KiB/2087msec); 0 zone resets clat (msec): min=43, max=452, avg=171.70, stdev=192.33 lat (msec): min=43, max=452, avg=171.79, stdev=192.33 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 44], 10.00th=[ 44], 20.00th=[ 46], | 30.00th=[ 47], 40.00th=[ 47], 50.00th=[ 67], 60.00th=[ 95], | 70.00th=[ 95], 80.00th=[ 451], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 2048, max= 5417, per=52.54%, avg=3732.50, stdev=2382.24, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 lat (msec) : 50=25.00%, 100=33.33%, 250=16.67%, 500=25.00% cpu : usr=0.00%, sys=15.92%, ctx=85, 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=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=5074KiB/s (5196kB/s), 507KiB/s-2453KiB/s (520kB/s-2512kB/s), io=20.0MiB (20.0MB), run=2087-4036msec WRITE: bw=7104KiB/s (7275kB/s), 1435KiB/s-3435KiB/s (1469kB/s-3517kB/s), io=28.0MiB (29.4MB), run=2087-4036msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180325: Tue Jun 16 12:26:00 2026 read: IOPS=1, BW=1965KiB/s (2012kB/s)(7168KiB/3648msec) clat (usec): min=521, max=273854, avg=106768.82, stdev=93956.37 lat (usec): min=522, max=273856, avg=106770.10, stdev=93956.51 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 668], | 30.00th=[ 90702], 40.00th=[ 90702], 50.00th=[109577], 60.00th=[120062], | 70.00th=[120062], 80.00th=[152044], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 2048, max= 5287, per=74.45%, avg=3802.00, stdev=1636.17, samples=3 iops : min= 2, max= 5, avg= 3.33, stdev= 1.53, samples=3 write: IOPS=1, BW=1404KiB/s (1437kB/s)(5120KiB/3648msec); 0 zone resets clat (msec): min=124, max=1684, avg=577.35, stdev=641.27 lat (msec): min=124, max=1685, avg=577.42, stdev=641.30 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 125], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 2019, max= 4096, per=38.01%, avg=2718.00, stdev=1193.42, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (usec) : 750=16.67% lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=29.19%, ctx=1136, 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=180326: Tue Jun 16 12:26:00 2026 read: IOPS=0, BW=511KiB/s (523kB/s)(2048KiB/4010msec) clat (usec): min=525, max=376889, avg=188707.63, stdev=266129.67 lat (usec): min=526, max=376891, avg=188709.02, stdev=266130.90 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 529], 40.00th=[ 529], 50.00th=[ 529], 60.00th=[375391], | 70.00th=[375391], 80.00th=[375391], 90.00th=[375391], 95.00th=[375391], | 99.00th=[375391], 99.50th=[375391], 99.90th=[375391], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 1774, max= 2048, per=37.42%, avg=1911.00, stdev=193.75, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2554KiB/s (2615kB/s)(10.0MiB/4010msec); 0 zone resets clat (msec): min=46, max=1505, avg=353.81, stdev=438.73 lat (msec): min=47, max=1506, avg=353.87, stdev=438.74 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 58], | 30.00th=[ 82], 40.00th=[ 142], 50.00th=[ 178], 60.00th=[ 232], | 70.00th=[ 300], 80.00th=[ 418], 90.00th=[ 575], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 2035, max= 4039, per=35.56%, avg=2542.50, stdev=997.69, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (usec) : 750=8.33% lat (msec) : 50=8.33%, 100=16.67%, 250=25.00%, 500=25.00%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=29.61%, ctx=394, 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=180327: Tue Jun 16 12:26:00 2026 read: IOPS=1, BW=1878KiB/s (1923kB/s)(6144KiB/3271msec) clat (usec): min=428, max=1287.5k, avg=304365.49, stdev=491329.07 lat (usec): min=429, max=1287.5k, avg=304366.75, stdev=491328.98 clat percentiles (usec): | 1.00th=[ 429], 5.00th=[ 429], 10.00th=[ 429], | 20.00th=[ 510], 30.00th=[ 510], 40.00th=[ 128451], | 50.00th=[ 128451], 60.00th=[ 156238], 70.00th=[ 254804], | 80.00th=[ 254804], 90.00th=[1283458], 95.00th=[1283458], | 99.00th=[1283458], 99.50th=[1283458], 99.90th=[1283458], | 99.95th=[1283458], 99.99th=[1283458] bw ( KiB/s): min= 2019, max= 6144, per=66.56%, avg=3399.33, stdev=2376.96, samples=3 iops : min= 1, max= 6, avg= 2.67, stdev= 2.89, samples=3 write: IOPS=1, BW=1878KiB/s (1923kB/s)(6144KiB/3271msec); 0 zone resets clat (msec): min=64, max=427, avg=230.36, stdev=142.46 lat (msec): min=64, max=428, avg=230.42, stdev=142.49 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 122], | 30.00th=[ 122], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 309], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 2019, max= 4096, per=41.06%, avg=2935.50, stdev=1069.05, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=36.57%, ctx=925, 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=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=180328: Tue Jun 16 12:26:00 2026 read: IOPS=2, BW=2422KiB/s (2480kB/s)(5120KiB/2114msec) clat (usec): min=734, max=253993, avg=96127.62, stdev=111155.47 lat (usec): min=736, max=253993, avg=96129.16, stdev=111154.77 clat percentiles (usec): | 1.00th=[ 734], 5.00th=[ 734], 10.00th=[ 734], 20.00th=[ 734], | 30.00th=[ 775], 40.00th=[ 775], 50.00th=[ 58983], 60.00th=[ 58983], | 70.00th=[166724], 80.00th=[166724], 90.00th=[254804], 95.00th=[254804], | 99.00th=[254804], 99.50th=[254804], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=3, BW=3391KiB/s (3472kB/s)(7168KiB/2114msec); 0 zone resets clat (msec): min=64, max=376, avg=221.92, stdev=120.06 lat (msec): min=64, max=376, avg=221.98, stdev=120.03 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 93], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 243], 60.00th=[ 251], | 70.00th=[ 251], 80.00th=[ 355], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 1774, max= 6119, per=48.84%, avg=3491.75, stdev=2022.76, samples=4 iops : min= 1, max= 5, avg= 2.50, stdev= 1.91, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 100=25.00%, 250=25.00%, 500=33.33% cpu : usr=0.00%, sys=41.41%, ctx=546, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5107KiB/s (5230kB/s), 511KiB/s-2422KiB/s (523kB/s-2480kB/s), io=20.0MiB (20.0MB), run=2114-4010msec WRITE: bw=7150KiB/s (7322kB/s), 1404KiB/s-3391KiB/s (1437kB/s-3472kB/s), io=28.0MiB (29.4MB), run=2114-4010msec 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=180336: Tue Jun 16 12:26:08 2026 read: IOPS=1, BW=6978KiB/s (7145kB/s)(12.0MiB/1761msec) clat (msec): min=459, max=660, avg=547.05, stdev=102.68 lat (msec): min=459, max=660, avg=547.05, stdev=102.68 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7025, max= 8143, per=83.75%, avg=7584.00, stdev=790.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.06%, sys=46.14%, ctx=1528, 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=180338: Tue Jun 16 12:26:08 2026 read: IOPS=0, BW=2264KiB/s (2319kB/s)(4096KiB/1809msec) clat (nsec): min=424758k, max=424758k, avg=424758256.00, stdev= 0.00 lat (nsec): min=424761k, max=424761k, avg=424761119.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7327, max= 7327, per=80.91%, avg=7327.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4528KiB/s (4637kB/s)(8192KiB/1809msec); 0 zone resets clat (msec): min=443, max=808, avg=625.95, stdev=257.75 lat (msec): min=443, max=808, avg=626.24, stdev=257.77 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 8143, max= 8143, per=44.98%, avg=8143.00, 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=13.88%, ctx=258, 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=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=180340: Tue Jun 16 12:26:08 2026 write: IOPS=1, BW=6789KiB/s (6952kB/s)(12.0MiB/1810msec); 0 zone resets clat (msec): min=323, max=845, avg=569.12, stdev=262.64 lat (msec): min=323, max=846, avg=569.54, stdev=262.65 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 8143, max= 8143, per=44.98%, avg=8143.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=16.86%, ctx=86, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180342: Tue Jun 16 12:26:08 2026 write: IOPS=1, BW=8165KiB/s (8361kB/s)(12.0MiB/1505msec); 0 zone resets clat (msec): min=188, max=953, avg=488.67, stdev=407.94 lat (msec): min=188, max=953, avg=488.98, stdev=407.96 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 326], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7585, max= 8143, per=43.44%, avg=7864.00, stdev=394.57, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=14.03%, ctx=142, 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=9057KiB/s (9274kB/s), 2264KiB/s-6978KiB/s (2319kB/s-7145kB/s), io=16.0MiB (16.8MB), run=1761-1809msec WRITE: bw=17.7MiB/s (18.5MB/s), 4528KiB/s-8165KiB/s (4637kB/s-8361kB/s), io=32.0MiB (33.6MB), run=1505-1810msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180335: Tue Jun 16 12:26:08 2026 read: IOPS=1, BW=6181KiB/s (6329kB/s)(12.0MiB/1988msec) clat (msec): min=113, max=975, avg=629.51, stdev=455.57 lat (msec): min=113, max=975, avg=629.51, stdev=455.57 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 114], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] 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 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.00%, sys=10.62%, ctx=55, 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=180337: Tue Jun 16 12:26:08 2026 read: IOPS=0, BW=1899KiB/s (1945kB/s)(4096KiB/2157msec) clat (nsec): min=507879k, max=507879k, avg=507878591.00, stdev= 0.00 lat (nsec): min=507881k, max=507881k, avg=507880666.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] 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=3798KiB/s (3889kB/s)(8192KiB/2157msec); 0 zone resets clat (msec): min=748, max=785, avg=767.28, stdev=26.17 lat (msec): min=749, max=786, avg=767.61, stdev=26.10 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 785], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 8192, max= 8192, per=53.93%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.09%, sys=14.28%, ctx=143, 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=180339: Tue Jun 16 12:26:08 2026 write: IOPS=1, BW=5729KiB/s (5866kB/s)(12.0MiB/2145msec); 0 zone resets clat (msec): min=116, max=966, avg=584.27, stdev=431.45 lat (msec): min=116, max=966, avg=584.53, stdev=431.51 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 116], | 30.00th=[ 116], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 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= 8047, max= 8192, per=53.45%, avg=8119.50, stdev=102.53, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=19.22%, ctx=194, 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=180341: Tue Jun 16 12:26:08 2026 write: IOPS=1, BW=7407KiB/s (7585kB/s)(12.0MiB/1659msec); 0 zone resets clat (msec): min=382, max=614, avg=526.87, stdev=126.30 lat (msec): min=383, max=614, avg=527.59, stdev=125.59 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 8126, max= 8192, per=53.71%, avg=8159.00, stdev=46.67, 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=18.82%, ctx=83, 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 Run status group 0 (all jobs): READ: bw=7596KiB/s (7778kB/s), 1899KiB/s-6181KiB/s (1945kB/s-6329kB/s), io=16.0MiB (16.8MB), run=1988-2157msec WRITE: bw=14.8MiB/s (15.6MB/s), 3798KiB/s-7407KiB/s (3889kB/s-7585kB/s), io=32.0MiB (33.6MB), run=1659-2157msec