== sanity test 398b: DIO and buffer IO race ============== 08:55:53 (1786193753) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.93834 s, 17.1 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=179531: Sat Aug 8 08:56:53 2026 read: IOPS=29, BW=119KiB/s (121kB/s)(5992KiB/50508msec) clat (usec): min=32, max=695850, avg=18492.46, stdev=19833.47 lat (usec): min=32, max=695851, avg=18493.23, stdev=19833.50 clat percentiles (usec): | 1.00th=[ 99], 5.00th=[ 7701], 10.00th=[ 8848], 20.00th=[ 10683], | 30.00th=[ 12387], 40.00th=[ 14353], 50.00th=[ 16319], 60.00th=[ 18220], | 70.00th=[ 20841], 80.00th=[ 24511], 90.00th=[ 29492], 95.00th=[ 35390], | 99.00th=[ 50594], 99.50th=[ 54264], 99.90th=[ 81265], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 6, max= 192, per=24.97%, avg=118.38, stdev=29.15, samples=100 iops : min= 1, max= 48, avg=29.19, stdev= 7.27, samples=100 write: IOPS=31, BW=125KiB/s (128kB/s)(6296KiB/50508msec); 0 zone resets clat (usec): min=745, max=62900, avg=14310.03, stdev=10624.87 lat (usec): min=745, max=62901, avg=14313.32, stdev=10631.36 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 2769], 10.00th=[ 3228], 20.00th=[ 4015], | 30.00th=[ 6521], 40.00th=[ 9634], 50.00th=[11994], 60.00th=[14746], | 70.00th=[18220], 80.00th=[22676], 90.00th=[29230], 95.00th=[35390], | 99.00th=[46924], 99.50th=[49546], 99.90th=[56361], 99.95th=[62653], | 99.99th=[62653] bw ( KiB/s): min= 48, max= 216, per=25.32%, avg=125.61, stdev=32.78, samples=99 iops : min= 12, max= 54, avg=31.01, stdev= 8.24, samples=99 lat (usec) : 50=0.10%, 100=0.42%, 250=0.39%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=0.78%, 4=9.38%, 10=17.58%, 20=42.09%, 50=28.35% lat (msec) : 100=0.75%, 750=0.03% cpu : usr=0.10%, sys=25.17%, ctx=9621, 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=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=179532: Sat Aug 8 08:56:53 2026 read: IOPS=29, BW=118KiB/s (121kB/s)(5940KiB/50409msec) clat (usec): min=34, max=111802, avg=17800.49, stdev=9389.30 lat (usec): min=35, max=111803, avg=17801.39, stdev=9389.35 clat percentiles (usec): | 1.00th=[ 115], 5.00th=[ 7701], 10.00th=[ 8848], 20.00th=[ 10552], | 30.00th=[ 12387], 40.00th=[ 14091], 50.00th=[ 16319], 60.00th=[ 18220], | 70.00th=[ 20579], 80.00th=[ 23200], 90.00th=[ 28967], 95.00th=[ 34341], | 99.00th=[ 49546], 99.50th=[ 55313], 99.90th=[ 72877], 99.95th=[111674], | 99.99th=[111674] bw ( KiB/s): min= 6, max= 200, per=24.85%, avg=117.79, stdev=29.92, samples=100 iops : min= 1, max= 50, avg=29.05, stdev= 7.53, samples=100 write: IOPS=31, BW=126KiB/s (129kB/s)(6348KiB/50409msec); 0 zone resets clat (usec): min=752, max=673652, avg=14921.96, stdev=19792.09 lat (usec): min=752, max=673655, avg=14923.37, stdev=19792.09 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 2769], 10.00th=[ 3163], 20.00th=[ 4228], | 30.00th=[ 6849], 40.00th=[ 9896], 50.00th=[ 11994], 60.00th=[ 14615], | 70.00th=[ 18220], 80.00th=[ 23462], 90.00th=[ 30016], 95.00th=[ 35390], | 99.00th=[ 47973], 99.50th=[ 54264], 99.90th=[ 70779], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 56, max= 248, per=25.57%, avg=126.83, stdev=32.90, samples=99 iops : min= 14, max= 62, avg=31.31, stdev= 8.24, samples=99 lat (usec) : 50=0.03%, 100=0.26%, 250=0.72%, 750=0.03%, 1000=0.23% lat (msec) : 2=0.78%, 4=8.66%, 10=18.26%, 20=42.02%, 50=28.19% lat (msec) : 100=0.75%, 250=0.03%, 750=0.03% cpu : usr=0.11%, sys=25.35%, ctx=9861, 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=179533: Sat Aug 8 08:56:53 2026 read: IOPS=29, BW=119KiB/s (122kB/s)(6028KiB/50632msec) clat (usec): min=47, max=698460, avg=18455.85, stdev=19835.98 lat (usec): min=48, max=698461, avg=18456.71, stdev=19836.00 clat percentiles (usec): | 1.00th=[ 117], 5.00th=[ 7570], 10.00th=[ 8979], 20.00th=[ 10814], | 30.00th=[ 12387], 40.00th=[ 14353], 50.00th=[ 16319], 60.00th=[ 18744], | 70.00th=[ 21103], 80.00th=[ 23725], 90.00th=[ 28967], 95.00th=[ 35390], | 99.00th=[ 51119], 99.50th=[ 56886], 99.90th=[ 80217], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 6, max= 176, per=25.00%, avg=118.51, stdev=27.28, samples=100 iops : min= 1, max= 44, avg=29.23, stdev= 6.85, samples=100 write: IOPS=30, BW=124KiB/s (127kB/s)(6260KiB/50632msec); 0 zone resets clat (usec): min=743, max=78509, avg=14406.85, stdev=11041.62 lat (usec): min=744, max=78510, avg=14409.27, stdev=11040.71 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 2606], 10.00th=[ 3097], 20.00th=[ 4080], | 30.00th=[ 6390], 40.00th=[ 9765], 50.00th=[11994], 60.00th=[14615], | 70.00th=[17957], 80.00th=[22152], 90.00th=[30016], 95.00th=[36439], | 99.00th=[49546], 99.50th=[53216], 99.90th=[59507], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 16, max= 199, per=24.71%, avg=122.57, stdev=35.01, samples=100 iops : min= 4, max= 49, avg=30.25, stdev= 8.74, samples=100 lat (usec) : 50=0.07%, 100=0.16%, 250=0.65%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=1.01%, 4=8.82%, 10=17.87%, 20=41.47%, 50=28.78% lat (msec) : 100=0.94%, 750=0.03% cpu : usr=0.09%, sys=25.15%, ctx=9796, 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=179534: Sat Aug 8 08:56:53 2026 read: IOPS=29, BW=119KiB/s (122kB/s)(6052KiB/50656msec) clat (usec): min=49, max=63396, avg=17679.19, stdev=8696.69 lat (usec): min=50, max=63397, avg=17680.04, stdev=8696.76 clat percentiles (usec): | 1.00th=[ 104], 5.00th=[ 7439], 10.00th=[ 8848], 20.00th=[10683], | 30.00th=[12387], 40.00th=[14353], 50.00th=[16319], 60.00th=[18482], | 70.00th=[20841], 80.00th=[23725], 90.00th=[28705], 95.00th=[33817], | 99.00th=[45876], 99.50th=[50070], 99.90th=[59507], 99.95th=[63177], | 99.99th=[63177] bw ( KiB/s): min= 32, max= 175, per=25.31%, avg=119.95, stdev=26.18, samples=99 iops : min= 8, max= 43, avg=29.60, stdev= 6.58, samples=99 write: IOPS=30, BW=123KiB/s (126kB/s)(6236KiB/50656msec); 0 zone resets clat (usec): min=755, max=661677, avg=15151.57, stdev=19735.89 lat (usec): min=755, max=661679, avg=15152.50, stdev=19735.94 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 2540], 10.00th=[ 3097], 20.00th=[ 4228], | 30.00th=[ 7242], 40.00th=[ 9896], 50.00th=[ 12256], 60.00th=[ 15270], | 70.00th=[ 19006], 80.00th=[ 23462], 90.00th=[ 30278], 95.00th=[ 35390], | 99.00th=[ 49546], 99.50th=[ 56886], 99.90th=[ 71828], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 32, max= 192, per=25.02%, avg=124.12, stdev=30.60, samples=99 iops : min= 8, max= 48, avg=30.63, stdev= 7.64, samples=99 lat (usec) : 50=0.03%, 100=0.42%, 250=0.68%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.29% lat (msec) : 2=1.20%, 4=8.01%, 10=18.13%, 20=40.79%, 50=29.65% lat (msec) : 100=0.68%, 750=0.03% cpu : usr=0.10%, sys=24.95%, ctx=9699, 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=474KiB/s (485kB/s), 118KiB/s-119KiB/s (121kB/s-122kB/s), io=23.4MiB (24.6MB), run=50409-50656msec WRITE: bw=496KiB/s (508kB/s), 123KiB/s-126KiB/s (126kB/s-129kB/s), io=24.6MiB (25.7MB), run=50409-50656msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179527: Sat Aug 8 08:57:01 2026 read: IOPS=25, BW=103KiB/s (106kB/s)(5992KiB/58124msec) clat (msec): min=2, max=692, avg=16.67, stdev=21.81 lat (msec): min=2, max=692, avg=16.67, stdev=21.81 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 19], 80.00th=[ 25], 90.00th=[ 35], 95.00th=[ 43], | 99.00th=[ 62], 99.50th=[ 72], 99.90th=[ 103], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 24, max= 376, per=25.10%, avg=103.41, stdev=70.02, samples=114 iops : min= 6, max= 94, avg=25.53, stdev=17.63, samples=114 write: IOPS=27, BW=108KiB/s (111kB/s)(6296KiB/58124msec); 0 zone resets clat (msec): min=4, max=112, avg=20.87, stdev=13.96 lat (msec): min=4, max=112, avg=20.87, stdev=13.96 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 33], 90.00th=[ 40], 95.00th=[ 47], | 99.00th=[ 69], 99.50th=[ 79], 99.90th=[ 92], 99.95th=[ 113], | 99.99th=[ 113] bw ( KiB/s): min= 8, max= 344, per=25.08%, avg=108.32, stdev=69.25, samples=114 iops : min= 2, max= 86, avg=26.75, stdev=17.43, samples=114 lat (msec) : 4=1.07%, 10=33.04%, 20=31.18%, 50=31.32%, 100=3.29% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.11%, sys=13.66%, ctx=6335, 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=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=179528: Sat Aug 8 08:57:01 2026 read: IOPS=25, BW=103KiB/s (105kB/s)(5940KiB/57948msec) clat (msec): min=2, max=652, avg=16.13, stdev=20.31 lat (msec): min=2, max=652, avg=16.13, stdev=20.31 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 19], 80.00th=[ 24], 90.00th=[ 33], 95.00th=[ 41], | 99.00th=[ 57], 99.50th=[ 65], 99.90th=[ 79], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 16, max= 384, per=25.03%, avg=103.13, stdev=69.90, samples=114 iops : min= 4, max= 96, avg=25.46, stdev=17.57, samples=114 write: IOPS=27, BW=110KiB/s (112kB/s)(6348KiB/57948msec); 0 zone resets clat (usec): min=4686, max=88649, avg=21227.27, stdev=14147.03 lat (usec): min=4687, max=88651, avg=21231.04, stdev=14146.59 clat percentiles (usec): | 1.00th=[ 5735], 5.00th=[ 6587], 10.00th=[ 7242], 20.00th=[ 8455], | 30.00th=[10814], 40.00th=[14091], 50.00th=[17695], 60.00th=[21890], | 70.00th=[26608], 80.00th=[31851], 90.00th=[40109], 95.00th=[47973], | 99.00th=[68682], 99.50th=[77071], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 39, max= 384, per=25.48%, avg=110.09, stdev=69.57, samples=114 iops : min= 9, max= 96, avg=27.19, stdev=17.52, samples=114 lat (msec) : 4=0.91%, 10=32.85%, 20=31.32%, 50=31.80%, 100=3.09% lat (msec) : 750=0.03% cpu : usr=0.10%, sys=13.87%, ctx=6411, 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=179529: Sat Aug 8 08:57:01 2026 read: IOPS=26, BW=104KiB/s (107kB/s)(6028KiB/57904msec) clat (usec): min=2891, max=80877, avg=16328.65, stdev=12340.61 lat (usec): min=2892, max=80878, avg=16329.53, stdev=12340.65 clat percentiles (usec): | 1.00th=[ 3654], 5.00th=[ 4490], 10.00th=[ 5080], 20.00th=[ 5932], | 30.00th=[ 7832], 40.00th=[10290], 50.00th=[12518], 60.00th=[15008], | 70.00th=[19006], 80.00th=[25560], 90.00th=[34866], 95.00th=[42206], | 99.00th=[56886], 99.50th=[62653], 99.90th=[72877], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 24, max= 408, per=25.46%, avg=104.89, stdev=71.98, samples=114 iops : min= 6, max= 102, avg=25.89, stdev=18.13, samples=114 write: IOPS=27, BW=108KiB/s (111kB/s)(6260KiB/57904msec); 0 zone resets clat (msec): min=4, max=663, avg=21.08, stdev=21.37 lat (msec): min=4, max=663, avg=21.09, stdev=21.37 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 26], 80.00th=[ 31], 90.00th=[ 40], 95.00th=[ 48], | 99.00th=[ 69], 99.50th=[ 73], 99.90th=[ 117], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 32, max= 336, per=25.19%, avg=108.82, stdev=69.41, samples=114 iops : min= 8, max= 84, avg=26.88, stdev=17.44, samples=114 lat (msec) : 4=1.01%, 10=32.58%, 20=30.99%, 50=32.29%, 100=3.06% lat (msec) : 250=0.03%, 750=0.03% cpu : usr=0.09%, sys=13.98%, ctx=6401, 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=179530: Sat Aug 8 08:57:01 2026 read: IOPS=26, BW=104KiB/s (107kB/s)(6052KiB/58190msec) clat (usec): min=2860, max=94221, avg=16438.54, stdev=12432.58 lat (usec): min=2861, max=94222, avg=16439.37, stdev=12432.60 clat percentiles (usec): | 1.00th=[ 3621], 5.00th=[ 4555], 10.00th=[ 5080], 20.00th=[ 6063], | 30.00th=[ 7767], 40.00th=[10159], 50.00th=[12387], 60.00th=[15008], | 70.00th=[19530], 80.00th=[25297], 90.00th=[34341], 95.00th=[42206], | 99.00th=[54789], 99.50th=[64226], 99.90th=[79168], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 24, max= 408, per=25.19%, avg=103.77, stdev=69.11, samples=114 iops : min= 6, max= 102, avg=25.61, stdev=17.39, samples=114 write: IOPS=26, BW=107KiB/s (110kB/s)(6236KiB/58190msec); 0 zone resets clat (msec): min=4, max=666, avg=21.19, stdev=21.89 lat (msec): min=4, max=666, avg=21.19, stdev=21.89 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 32], 90.00th=[ 41], 95.00th=[ 48], | 99.00th=[ 73], 99.50th=[ 83], 99.90th=[ 117], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 32, max= 392, per=24.83%, avg=107.28, stdev=69.01, samples=114 iops : min= 8, max= 98, avg=26.49, stdev=17.36, samples=114 lat (msec) : 4=1.04%, 10=32.62%, 20=30.99%, 50=32.26%, 100=2.99% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.11%, sys=13.69%, ctx=6273, 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=413KiB/s (423kB/s), 103KiB/s-104KiB/s (105kB/s-107kB/s), io=23.4MiB (24.6MB), run=57904-58190msec WRITE: bw=432KiB/s (442kB/s), 107KiB/s-110KiB/s (110kB/s-112kB/s), io=24.6MiB (25.7MB), run=57904-58190msec 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=179555: Sat Aug 8 08:57:20 2026 read: IOPS=25, BW=413KiB/s (423kB/s)(5920KiB/14338msec) clat (usec): min=76, max=67976, avg=19563.57, stdev=10905.29 lat (usec): min=76, max=67977, avg=19564.97, stdev=10904.97 clat percentiles (usec): | 1.00th=[ 103], 5.00th=[ 165], 10.00th=[ 9503], 20.00th=[12125], | 30.00th=[14091], 40.00th=[15795], 50.00th=[17433], 60.00th=[20055], | 70.00th=[22938], 80.00th=[26346], 90.00th=[33162], 95.00th=[39060], | 99.00th=[61080], 99.50th=[64750], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 255, max= 704, per=24.74%, avg=408.64, stdev=112.40, samples=28 iops : min= 15, max= 44, avg=25.14, stdev= 7.14, samples=28 write: IOPS=27, BW=444KiB/s (455kB/s)(6368KiB/14338msec); 0 zone resets clat (usec): min=1587, max=80594, avg=17708.75, stdev=12425.59 lat (usec): min=1588, max=80595, avg=17722.49, stdev=12430.43 clat percentiles (usec): | 1.00th=[ 2507], 5.00th=[ 4490], 10.00th=[ 4948], 20.00th=[ 6849], | 30.00th=[ 9110], 40.00th=[12387], 50.00th=[15139], 60.00th=[17171], | 70.00th=[21627], 80.00th=[26084], 90.00th=[35914], 95.00th=[44303], | 99.00th=[59507], 99.50th=[61604], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 224, max= 746, per=25.42%, avg=441.86, stdev=127.18, samples=28 iops : min= 14, max= 46, avg=27.21, stdev= 7.88, samples=28 lat (usec) : 100=0.39%, 250=2.47% lat (msec) : 2=0.26%, 4=1.30%, 10=18.23%, 20=41.02%, 50=34.11% lat (msec) : 100=2.21% cpu : usr=0.10%, sys=27.07%, ctx=2879, 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=179556: Sat Aug 8 08:57:20 2026 read: IOPS=25, BW=402KiB/s (412kB/s)(5744KiB/14285msec) clat (usec): min=36, max=66382, avg=20447.31, stdev=10143.42 lat (usec): min=37, max=66383, avg=20448.33, stdev=10143.78 clat percentiles (usec): | 1.00th=[ 99], 5.00th=[ 8094], 10.00th=[10028], 20.00th=[12256], | 30.00th=[14746], 40.00th=[16909], 50.00th=[19530], 60.00th=[22152], | 70.00th=[24249], 80.00th=[27132], 90.00th=[32113], 95.00th=[38536], | 99.00th=[55313], 99.50th=[61604], 99.90th=[66323], 99.95th=[66323], | 99.99th=[66323] bw ( KiB/s): min= 223, max= 544, per=24.14%, avg=398.86, stdev=88.99, samples=28 iops : min= 13, max= 34, avg=24.54, stdev= 5.53, samples=28 write: IOPS=28, BW=458KiB/s (469kB/s)(6544KiB/14285msec); 0 zone resets clat (usec): min=1645, max=73706, avg=16877.38, stdev=12247.80 lat (usec): min=1647, max=73708, avg=16882.56, stdev=12247.15 clat percentiles (usec): | 1.00th=[ 2933], 5.00th=[ 4228], 10.00th=[ 4883], 20.00th=[ 5866], | 30.00th=[ 8356], 40.00th=[11994], 50.00th=[14222], 60.00th=[16909], | 70.00th=[20317], 80.00th=[25035], 90.00th=[34341], 95.00th=[40633], | 99.00th=[60556], 99.50th=[66847], 99.90th=[73925], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 224, max= 720, per=26.16%, avg=454.61, stdev=124.21, samples=28 iops : min= 14, max= 45, avg=28.04, stdev= 7.76, samples=28 lat (usec) : 50=0.13%, 100=0.39%, 250=0.91%, 500=0.26% lat (msec) : 2=0.13%, 4=1.95%, 10=19.53%, 20=38.02%, 50=36.98% lat (msec) : 100=1.69% cpu : usr=0.09%, sys=27.08%, ctx=2938, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179557: Sat Aug 8 08:57:20 2026 read: IOPS=26, BW=432KiB/s (442kB/s)(6256KiB/14496msec) clat (usec): min=57, max=79219, avg=20968.14, stdev=11530.20 lat (usec): min=58, max=79220, avg=20968.99, stdev=11530.24 clat percentiles (usec): | 1.00th=[ 95], 5.00th=[ 7177], 10.00th=[ 9896], 20.00th=[12256], | 30.00th=[15008], 40.00th=[17171], 50.00th=[19268], 60.00th=[21365], | 70.00th=[23987], 80.00th=[27919], 90.00th=[35390], 95.00th=[43779], | 99.00th=[59507], 99.50th=[72877], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 288, max= 608, per=25.94%, avg=428.50, stdev=79.17, samples=28 iops : min= 18, max= 38, avg=26.39, stdev= 5.08, samples=28 write: IOPS=26, BW=416KiB/s (426kB/s)(6032KiB/14496msec); 0 zone resets clat (usec): min=1812, max=58390, avg=16595.07, stdev=11082.36 lat (usec): min=1813, max=58394, avg=16600.44, stdev=11082.89 clat percentiles (usec): | 1.00th=[ 2180], 5.00th=[ 4359], 10.00th=[ 5080], 20.00th=[ 6390], | 30.00th=[ 9372], 40.00th=[11994], 50.00th=[14484], 60.00th=[16712], | 70.00th=[19792], 80.00th=[25297], 90.00th=[31851], 95.00th=[38011], | 99.00th=[55313], 99.50th=[56886], 99.90th=[58459], 99.95th=[58459], | 99.99th=[58459] bw ( KiB/s): min= 192, max= 720, per=23.08%, avg=401.07, stdev=110.23, samples=28 iops : min= 12, max= 45, avg=24.68, stdev= 6.90, samples=28 lat (usec) : 100=0.52%, 250=1.69% lat (msec) : 2=0.26%, 4=1.82%, 10=17.71%, 20=39.84%, 50=36.33% lat (msec) : 100=1.82% cpu : usr=0.11%, sys=26.99%, ctx=2973, 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=179558: Sat Aug 8 08:57:20 2026 read: IOPS=27, BW=440KiB/s (451kB/s)(6032KiB/13705msec) clat (usec): min=82, max=73353, avg=18831.67, stdev=10724.95 lat (usec): min=83, max=73354, avg=18832.41, stdev=10724.96 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 119], 10.00th=[ 7046], 20.00th=[11076], | 30.00th=[13173], 40.00th=[15926], 50.00th=[18482], 60.00th=[20579], | 70.00th=[23200], 80.00th=[26608], 90.00th=[31589], 95.00th=[35390], | 99.00th=[52167], 99.50th=[68682], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 256, max= 666, per=26.48%, avg=437.48, stdev=104.21, samples=27 iops : min= 16, max= 41, avg=26.93, stdev= 6.43, samples=27 write: IOPS=28, BW=456KiB/s (467kB/s)(6256KiB/13705msec); 0 zone resets clat (usec): min=1184, max=55267, avg=16839.61, stdev=12302.87 lat (usec): min=1185, max=55270, avg=16841.14, stdev=12302.96 clat percentiles (usec): | 1.00th=[ 2278], 5.00th=[ 4080], 10.00th=[ 4686], 20.00th=[ 5669], | 30.00th=[ 7570], 40.00th=[10814], 50.00th=[13304], 60.00th=[16581], | 70.00th=[20579], 80.00th=[27395], 90.00th=[36439], 95.00th=[43254], | 99.00th=[51119], 99.50th=[54264], 99.90th=[55313], 99.95th=[55313], | 99.99th=[55313] bw ( KiB/s): min= 286, max= 720, per=26.31%, avg=457.19, stdev=110.99, samples=27 iops : min= 17, max= 45, avg=28.19, stdev= 6.92, samples=27 lat (usec) : 100=0.91%, 250=3.39%, 500=0.26% lat (msec) : 2=0.26%, 4=2.08%, 10=20.05%, 20=36.20%, 50=35.55% lat (msec) : 100=1.30% cpu : usr=0.11%, sys=27.17%, ctx=2844, 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=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=1652KiB/s (1692kB/s), 402KiB/s-440KiB/s (412kB/s-451kB/s), io=23.4MiB (24.5MB), run=13705-14496msec WRITE: bw=1738KiB/s (1780kB/s), 416KiB/s-458KiB/s (426kB/s-469kB/s), io=24.6MiB (25.8MB), run=13705-14496msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179560: Sat Aug 8 08:57:23 2026 read: IOPS=22, BW=352KiB/s (361kB/s)(5920KiB/16812msec) clat (usec): min=3983, max=86116, avg=18622.01, stdev=13828.71 lat (usec): min=3985, max=86117, avg=18622.90, stdev=13828.72 clat percentiles (usec): | 1.00th=[ 4113], 5.00th=[ 5538], 10.00th=[ 6587], 20.00th=[ 8455], | 30.00th=[10159], 40.00th=[11994], 50.00th=[13566], 60.00th=[16057], | 70.00th=[20317], 80.00th=[27132], 90.00th=[38536], 95.00th=[48497], | 99.00th=[66847], 99.50th=[78119], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 127, max= 832, per=23.94%, avg=340.42, stdev=190.90, samples=33 iops : min= 7, max= 52, avg=20.85, stdev=12.05, samples=33 write: IOPS=23, BW=379KiB/s (388kB/s)(6368KiB/16812msec); 0 zone resets clat (msec): min=6, max=100, avg=24.76, stdev=15.81 lat (msec): min=6, max=100, avg=24.77, stdev=15.81 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 38], 90.00th=[ 47], 95.00th=[ 56], | 99.00th=[ 78], 99.50th=[ 90], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 127, max= 990, per=24.90%, avg=372.48, stdev=192.72, samples=33 iops : min= 7, max= 61, avg=22.85, stdev=12.19, samples=33 lat (msec) : 4=0.13%, 10=20.96%, 20=38.15%, 50=34.77%, 100=5.86% lat (msec) : 250=0.13% cpu : usr=0.09%, sys=13.25%, ctx=1773, 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=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=179561: Sat Aug 8 08:57:23 2026 read: IOPS=21, BW=341KiB/s (349kB/s)(5744KiB/16839msec) clat (usec): min=3490, max=72797, avg=19371.49, stdev=13751.69 lat (usec): min=3492, max=72799, avg=19372.63, stdev=13751.62 clat percentiles (usec): | 1.00th=[ 4621], 5.00th=[ 5997], 10.00th=[ 6980], 20.00th=[ 8848], | 30.00th=[10683], 40.00th=[12780], 50.00th=[14353], 60.00th=[16909], | 70.00th=[21103], 80.00th=[28443], 90.00th=[41157], 95.00th=[51119], | 99.00th=[61080], 99.50th=[71828], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 127, max= 832, per=23.47%, avg=333.79, stdev=170.75, samples=33 iops : min= 7, max= 52, avg=20.42, stdev=10.86, samples=33 write: IOPS=24, BW=389KiB/s (398kB/s)(6544KiB/16839msec); 0 zone resets clat (msec): min=6, max=106, avg=24.08, stdev=16.14 lat (msec): min=6, max=106, avg=24.08, stdev=16.14 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 84], 99.50th=[ 87], 99.90th=[ 107], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 188, max= 1085, per=25.16%, avg=376.42, stdev=197.63, samples=33 iops : min= 11, max= 67, avg=23.09, stdev=12.38, samples=33 lat (msec) : 4=0.13%, 10=20.18%, 20=39.19%, 50=34.24%, 100=6.12% lat (msec) : 250=0.13% cpu : usr=0.10%, sys=12.89%, ctx=1808, 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=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=179562: Sat Aug 8 08:57:23 2026 read: IOPS=23, BW=379KiB/s (388kB/s)(6256KiB/16499msec) clat (usec): min=3460, max=80249, avg=18771.57, stdev=13807.01 lat (usec): min=3461, max=80249, avg=18772.50, stdev=13806.98 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 6128], 10.00th=[ 6718], 20.00th=[ 8356], | 30.00th=[10421], 40.00th=[11994], 50.00th=[13960], 60.00th=[16909], | 70.00th=[21103], 80.00th=[26870], 90.00th=[37487], 95.00th=[48497], | 99.00th=[69731], 99.50th=[79168], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 94, max= 1021, per=26.44%, avg=375.94, stdev=214.66, samples=32 iops : min= 5, max= 63, avg=23.06, stdev=13.47, samples=32 write: IOPS=22, BW=366KiB/s (374kB/s)(6032KiB/16499msec); 0 zone resets clat (usec): min=5951, max=98163, avg=24203.44, stdev=14728.90 lat (usec): min=5953, max=98165, avg=24205.29, stdev=14728.95 clat percentiles (usec): | 1.00th=[ 6521], 5.00th=[ 8455], 10.00th=[ 9503], 20.00th=[11600], | 30.00th=[13698], 40.00th=[16319], 50.00th=[20055], 60.00th=[25035], | 70.00th=[30016], 80.00th=[35914], 90.00th=[44303], 95.00th=[51643], | 99.00th=[72877], 99.50th=[87557], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 159, max= 864, per=23.53%, avg=352.06, stdev=158.27, samples=32 iops : min= 9, max= 54, avg=21.56, stdev= 9.99, samples=32 lat (msec) : 4=0.13%, 10=20.31%, 20=38.28%, 50=35.94%, 100=5.34% cpu : usr=0.11%, sys=13.50%, ctx=1741, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179563: Sat Aug 8 08:57:23 2026 read: IOPS=22, BW=362KiB/s (371kB/s)(6032KiB/16641msec) clat (usec): min=4450, max=69127, avg=18389.19, stdev=12580.22 lat (usec): min=4451, max=69128, avg=18390.21, stdev=12580.20 clat percentiles (usec): | 1.00th=[ 4686], 5.00th=[ 5669], 10.00th=[ 6390], 20.00th=[ 8586], | 30.00th=[10683], 40.00th=[12387], 50.00th=[14353], 60.00th=[16188], | 70.00th=[20579], 80.00th=[25560], 90.00th=[38536], 95.00th=[46400], | 99.00th=[56886], 99.50th=[62129], 99.90th=[68682], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 159, max= 1085, per=25.24%, avg=358.85, stdev=200.79, samples=33 iops : min= 9, max= 67, avg=22.00, stdev=12.57, samples=33 write: IOPS=23, BW=376KiB/s (385kB/s)(6256KiB/16641msec); 0 zone resets clat (msec): min=6, max=108, avg=24.66, stdev=15.98 lat (msec): min=6, max=108, avg=24.66, stdev=15.98 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 35], 90.00th=[ 47], 95.00th=[ 58], | 99.00th=[ 78], 99.50th=[ 88], 99.90th=[ 109], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 191, max= 864, per=25.09%, avg=375.27, stdev=184.39, samples=33 iops : min= 11, max= 54, avg=23.03, stdev=11.64, samples=33 lat (msec) : 10=19.79%, 20=38.41%, 50=36.20%, 100=5.47%, 250=0.13% cpu : usr=0.10%, sys=13.57%, ctx=1739, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1422KiB/s (1457kB/s), 341KiB/s-379KiB/s (349kB/s-388kB/s), io=23.4MiB (24.5MB), run=16499-16839msec WRITE: bw=1497KiB/s (1532kB/s), 366KiB/s-389KiB/s (374kB/s-398kB/s), io=24.6MiB (25.8MB), run=16499-16839msec 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=179571: Sat Aug 8 08:57:30 2026 read: IOPS=2, BW=2603KiB/s (2665kB/s)(7168KiB/2754msec) clat (usec): min=728, max=919886, avg=218601.51, stdev=315689.15 lat (usec): min=729, max=919888, avg=218602.68, stdev=315689.49 clat percentiles (usec): | 1.00th=[ 725], 5.00th=[ 725], 10.00th=[ 725], 20.00th=[ 61080], | 30.00th=[ 78119], 40.00th=[ 78119], 50.00th=[129500], 60.00th=[143655], | 70.00th=[143655], 80.00th=[198181], 90.00th=[918553], 95.00th=[918553], | 99.00th=[918553], 99.50th=[918553], 99.90th=[918553], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 1984, max= 6144, per=60.05%, avg=4074.67, stdev=2080.08, samples=3 iops : min= 1, max= 6, avg= 3.67, stdev= 2.52, samples=3 write: IOPS=1, BW=1859KiB/s (1904kB/s)(5120KiB/2754msec); 0 zone resets clat (msec): min=122, max=387, avg=235.46, stdev=112.76 lat (msec): min=122, max=387, avg=235.51, stdev=112.78 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 184], 60.00th=[ 184], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 2048, max= 4096, per=35.48%, avg=3370.67, stdev=1147.25, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=16.67%, 250=50.00%, 500=16.67%, 1000=8.33% cpu : usr=0.00%, sys=42.10%, ctx=1124, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179572: Sat Aug 8 08:57:30 2026 read: IOPS=0, BW=679KiB/s (695kB/s)(2048KiB/3018msec) clat (usec): min=484, max=164034, avg=82259.35, stdev=115646.92 lat (usec): min=485, max=164036, avg=82261.13, stdev=115648.02 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 486], | 30.00th=[ 486], 40.00th=[ 486], 50.00th=[ 486], 60.00th=[164627], | 70.00th=[164627], 80.00th=[164627], 90.00th=[164627], 95.00th=[164627], | 99.00th=[164627], 99.50th=[164627], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 1715, max= 2048, per=27.73%, avg=1881.50, stdev=235.47, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3393KiB/s (3474kB/s)(10.0MiB/3018msec); 0 zone resets clat (msec): min=102, max=1051, avg=279.87, stdev=283.42 lat (msec): min=102, max=1051, avg=279.93, stdev=283.42 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 148], | 30.00th=[ 150], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 176], | 70.00th=[ 192], 80.00th=[ 251], 90.00th=[ 401], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 3968, max= 6144, per=49.85%, avg=4736.00, stdev=1221.04, samples=3 iops : min= 3, max= 6, avg= 4.33, stdev= 1.53, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=66.67%, 500=16.67%, 2000=8.33% cpu : usr=0.00%, sys=46.80%, ctx=362, 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=179573: Sat Aug 8 08:57:30 2026 read: IOPS=2, BW=2426KiB/s (2484kB/s)(6144KiB/2533msec) clat (usec): min=537, max=160627, avg=98548.86, stdev=59148.54 lat (usec): min=538, max=160628, avg=98549.81, stdev=59148.38 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 70779], | 30.00th=[ 70779], 40.00th=[ 98042], 50.00th=[ 98042], 60.00th=[106431], | 70.00th=[154141], 80.00th=[154141], 90.00th=[160433], 95.00th=[160433], | 99.00th=[160433], 99.50th=[160433], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 4096, max= 4096, per=60.37%, avg=4096.00, stdev= 0.00, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2426KiB/s (2484kB/s)(6144KiB/2533msec); 0 zone resets clat (msec): min=128, max=1083, avg=321.44, stdev=377.07 lat (msec): min=128, max=1083, avg=321.51, stdev=377.09 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 155], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 2048, max= 4096, per=33.59%, avg=3191.33, stdev=1044.65, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=16.67%, 250=58.33%, 500=8.33%, 2000=8.33% cpu : usr=0.04%, sys=33.41%, ctx=569, 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=179574: Sat Aug 8 08:57:30 2026 read: IOPS=1, BW=1898KiB/s (1944kB/s)(5120KiB/2697msec) clat (usec): min=316, max=130992, avg=52292.70, stdev=71042.24 lat (usec): min=316, max=130993, avg=52293.41, stdev=71042.45 clat percentiles (usec): | 1.00th=[ 318], 5.00th=[ 318], 10.00th=[ 318], 20.00th=[ 318], | 30.00th=[ 412], 40.00th=[ 412], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[129500], 80.00th=[129500], 90.00th=[130548], 95.00th=[130548], | 99.00th=[130548], 99.50th=[130548], 99.90th=[130548], 99.95th=[130548], | 99.99th=[130548] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2658KiB/s (2722kB/s)(7168KiB/2697msec); 0 zone resets clat (msec): min=127, max=988, avg=337.55, stdev=305.69 lat (msec): min=127, max=988, avg=337.61, stdev=305.71 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 148], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 203], 60.00th=[ 334], | 70.00th=[ 334], 80.00th=[ 409], 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= 1715, max= 6144, per=41.50%, avg=3942.33, stdev=2214.61, samples=3 iops : min= 1, max= 6, avg= 3.33, stdev= 2.52, samples=3 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 250=50.00%, 500=16.67%, 1000=8.33% cpu : usr=0.04%, sys=39.54%, ctx=415, 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=6786KiB/s (6949kB/s), 679KiB/s-2603KiB/s (695kB/s-2665kB/s), io=20.0MiB (20.0MB), run=2533-3018msec WRITE: bw=9500KiB/s (9728kB/s), 1859KiB/s-3393KiB/s (1904kB/s-3474kB/s), io=28.0MiB (29.4MB), run=2533-3018msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179576: Sat Aug 8 08:57:31 2026 read: IOPS=1, BW=2046KiB/s (2095kB/s)(7168KiB/3503msec) clat (msec): min=39, max=937, avg=388.29, stdev=360.61 lat (msec): min=39, max=937, avg=388.29, stdev=360.61 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 40], 10.00th=[ 40], 20.00th=[ 56], | 30.00th=[ 65], 40.00th=[ 65], 50.00th=[ 405], 60.00th=[ 460], | 70.00th=[ 460], 80.00th=[ 760], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 2048, max= 4079, per=47.61%, avg=2725.00, stdev=1172.60, samples=3 iops : min= 2, max= 3, avg= 2.33, stdev= 0.58, samples=3 write: IOPS=1, BW=1462KiB/s (1497kB/s)(5120KiB/3503msec); 0 zone resets clat (msec): min=45, max=501, avg=151.88, stdev=196.09 lat (msec): min=45, max=501, avg=151.94, stdev=196.08 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 46], 10.00th=[ 46], 20.00th=[ 46], | 30.00th=[ 58], 40.00th=[ 58], 50.00th=[ 61], 60.00th=[ 61], | 70.00th=[ 94], 80.00th=[ 94], 90.00th=[ 502], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 2048, max= 2048, per=25.56%, avg=2048.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 50=16.67%, 100=41.67%, 500=16.67%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=8.34%, ctx=61, 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=179577: Sat Aug 8 08:57:31 2026 read: IOPS=0, BW=613KiB/s (627kB/s)(2048KiB/3343msec) clat (msec): min=97, max=300, avg=199.00, stdev=144.07 lat (msec): min=97, max=300, avg=199.01, stdev=144.07 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 97], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 97], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 1695, max= 2048, per=32.70%, avg=1871.50, stdev=249.61, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=3063KiB/s (3137kB/s)(10.0MiB/3343msec); 0 zone resets clat (msec): min=50, max=1482, avg=279.22, stdev=430.92 lat (msec): min=50, max=1482, avg=279.29, stdev=430.92 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 69], | 30.00th=[ 79], 40.00th=[ 86], 50.00th=[ 124], 60.00th=[ 167], | 70.00th=[ 176], 80.00th=[ 271], 90.00th=[ 292], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 2039, max= 8192, per=68.12%, avg=5458.33, stdev=3133.28, samples=3 iops : min= 1, max= 8, avg= 5.00, stdev= 3.61, samples=3 lat (msec) : 100=41.67%, 250=25.00%, 500=25.00%, 2000=8.33% cpu : usr=0.03%, sys=16.73%, ctx=112, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179578: Sat Aug 8 08:57:31 2026 read: IOPS=1, BW=1742KiB/s (1784kB/s)(6144KiB/3527msec) clat (msec): min=47, max=568, avg=195.85, stdev=216.56 lat (msec): min=47, max=568, avg=195.85, stdev=216.56 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 48], | 30.00th=[ 48], 40.00th=[ 52], 50.00th=[ 52], 60.00th=[ 110], | 70.00th=[ 351], 80.00th=[ 351], 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= 2048, max= 4096, per=53.68%, avg=3072.00, stdev=1448.15, samples=2 iops : min= 2, max= 4, avg= 3.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1742KiB/s (1784kB/s)(6144KiB/3527msec); 0 zone resets clat (msec): min=28, max=1159, avg=367.45, stdev=419.65 lat (msec): min=28, max=1159, avg=367.55, stdev=419.64 clat percentiles (msec): | 1.00th=[ 29], 5.00th=[ 29], 10.00th=[ 29], 20.00th=[ 82], | 30.00th=[ 82], 40.00th=[ 157], 50.00th=[ 157], 60.00th=[ 317], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 2039, max= 3396, per=31.13%, avg=2494.33, stdev=780.88, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 50=25.00%, 100=16.67%, 250=16.67%, 500=25.00%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.03%, sys=8.85%, ctx=84, 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=179579: Sat Aug 8 08:57:31 2026 read: IOPS=1, BW=1431KiB/s (1465kB/s)(5120KiB/3578msec) clat (msec): min=21, max=303, avg=100.48, stdev=115.52 lat (msec): min=21, max=303, avg=100.48, stdev=115.52 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 22], 10.00th=[ 22], 20.00th=[ 22], | 30.00th=[ 48], 40.00th=[ 48], 50.00th=[ 48], 60.00th=[ 48], | 70.00th=[ 82], 80.00th=[ 82], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 4096, max= 4096, per=71.57%, avg=4096.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 write: IOPS=1, BW=2003KiB/s (2051kB/s)(7168KiB/3578msec); 0 zone resets clat (msec): min=48, max=1101, avg=419.00, stdev=377.50 lat (msec): min=48, max=1101, avg=419.07, stdev=377.49 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 48], 10.00th=[ 48], 20.00th=[ 91], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 317], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 659], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1706, max= 2048, per=24.21%, avg=1939.75, stdev=161.63, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (msec) : 50=33.33%, 100=16.67%, 250=8.33%, 500=16.67%, 750=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=18.84%, ctx=137, 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=5724KiB/s (5861kB/s), 613KiB/s-2046KiB/s (627kB/s-2095kB/s), io=20.0MiB (20.0MB), run=3343-3578msec WRITE: bw=8013KiB/s (8206kB/s), 1462KiB/s-3063KiB/s (1497kB/s-3137kB/s), io=28.0MiB (29.4MB), run=3343-3578msec 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=179585: Sat Aug 8 08:57:38 2026 read: IOPS=2, BW=9116KiB/s (9335kB/s)(12.0MiB/1348msec) clat (msec): min=372, max=454, avg=425.99, stdev=46.30 lat (msec): min=372, max=454, avg=425.99, stdev=46.30 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 7223, max= 8159, per=80.47%, avg=7691.00, stdev=661.85, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=49.07%, ctx=2607, 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=179586: Sat Aug 8 08:57:38 2026 read: IOPS=0, BW=2390KiB/s (2447kB/s)(4096KiB/1714msec) clat (nsec): min=422341k, max=422341k, avg=422340615.00, stdev= 0.00 lat (nsec): min=422344k, max=422344k, avg=422343772.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7236, max= 7236, per=75.71%, avg=7236.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4779KiB/s (4894kB/s)(8192KiB/1714msec); 0 zone resets clat (msec): min=568, max=700, avg=634.31, stdev=92.99 lat (msec): min=568, max=700, avg=634.63, stdev=93.07 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 8159, max= 8159, per=50.35%, 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%, 750=66.67% cpu : usr=0.00%, sys=23.41%, ctx=659, 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=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=179587: Sat Aug 8 08:57:38 2026 write: IOPS=1, BW=6077KiB/s (6223kB/s)(12.0MiB/2022msec); 0 zone resets clat (msec): min=138, max=1398, avg=652.39, stdev=661.66 lat (msec): min=138, max=1399, avg=652.68, stdev=661.75 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 422], | 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= 8159, max= 8159, per=50.35%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.05%, sys=14.99%, ctx=146, 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=179588: Sat Aug 8 08:57:38 2026 write: IOPS=1, BW=7271KiB/s (7446kB/s)(12.0MiB/1690msec); 0 zone resets clat (msec): min=232, max=1149, avg=541.02, stdev=526.59 lat (msec): min=232, max=1149, avg=541.34, stdev=526.61 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 232], | 30.00th=[ 232], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 243], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min=14473, max=14473, per=89.31%, avg=14473.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=19.30%, 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=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=9559KiB/s (9788kB/s), 2390KiB/s-9116KiB/s (2447kB/s-9335kB/s), io=16.0MiB (16.8MB), run=1348-1714msec WRITE: bw=15.8MiB/s (16.6MB/s), 4779KiB/s-7271KiB/s (4894kB/s-7446kB/s), io=32.0MiB (33.6MB), run=1690-2022msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179590: Sat Aug 8 08:57:38 2026 read: IOPS=2, BW=9035KiB/s (9252kB/s)(12.0MiB/1360msec) clat (msec): min=391, max=480, avg=441.53, stdev=45.40 lat (msec): min=391, max=480, avg=441.53, stdev=45.40 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 7198, max= 8078, per=88.95%, avg=7638.00, stdev=622.25, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=18.84%, ctx=90, 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=179591: Sat Aug 8 08:57:38 2026 read: IOPS=0, BW=2147KiB/s (2198kB/s)(4096KiB/1908msec) clat (nsec): min=1060.9M, max=1060.9M, avg=1060923002.00, stdev= 0.00 lat (nsec): min=1060.9M, max=1060.9M, avg=1060925331.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1062], 5.00th=[ 1062], 10.00th=[ 1062], 20.00th=[ 1062], | 30.00th=[ 1062], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8192, max= 8192, per=95.40%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4294KiB/s (4397kB/s)(8192KiB/1908msec); 0 zone resets clat (msec): min=310, max=504, avg=407.65, stdev=137.35 lat (msec): min=310, max=505, avg=407.94, stdev=137.33 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=15.99%, ctx=69, 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=179592: Sat Aug 8 08:57:38 2026 write: IOPS=1, BW=6982KiB/s (7149kB/s)(12.0MiB/1760msec); 0 zone resets clat (msec): min=319, max=741, avg=576.79, stdev=225.66 lat (msec): min=320, max=742, avg=577.32, stdev=225.86 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 743], 80.00th=[ 743], 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= 8078, max= 8192, per=47.37%, avg=8135.00, stdev=80.61, 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=0.11%, sys=14.95%, ctx=77, 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=179593: Sat Aug 8 08:57:38 2026 write: IOPS=1, BW=6876KiB/s (7041kB/s)(12.0MiB/1787msec); 0 zone resets clat (msec): min=443, max=763, avg=579.12, stdev=165.63 lat (msec): min=443, max=763, avg=579.33, stdev=165.55 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 531], 50.00th=[ 531], 60.00th=[ 531], | 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= 7236, max= 8192, per=44.92%, avg=7714.00, stdev=675.99, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=15.90%, ctx=145, 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=8587KiB/s (8793kB/s), 2147KiB/s-9035KiB/s (2198kB/s-9252kB/s), io=16.0MiB (16.8MB), run=1360-1908msec WRITE: bw=16.8MiB/s (17.6MB/s), 4294KiB/s-6982KiB/s (4397kB/s-7149kB/s), io=32.0MiB (33.6MB), run=1760-1908msec