== sanity test 398b: DIO and buffer IO race ============== 09:59:34 (1747403974) /usr/bin/fio 12+0 records in 12+0 records out 12582912 bytes (13 MB) copied, 0.0587427 s, 214 MB/s mix direct rw 12M to OST0 by fio with 4 jobs... mix buffer rw 12M to OST0 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-3.7 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.7 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=23436: Fri May 16 09:59:37 2025 read: IOPS=212, BW=848KiB/s (868kB/s)(1480KiB/1745msec) clat (usec): min=3, max=41112, avg=1473.51, stdev=3197.87 lat (usec): min=4, max=41113, avg=1474.11, stdev=3197.88 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 21], 50.00th=[ 33], 60.00th=[ 1254], | 70.00th=[ 1762], 80.00th=[ 2212], 90.00th=[ 3163], 95.00th=[ 5014], | 99.00th=[15270], 99.50th=[20841], 99.90th=[41157], 99.95th=[41157], | 99.99th=[41157] bw ( KiB/s): min= 688, max= 902, per=22.20%, avg=759.33, stdev=123.55, samples=3 iops : min= 172, max= 225, avg=189.67, stdev=30.60, samples=3 write: IOPS=228, BW=912KiB/s (934kB/s)(1592KiB/1745msec) clat (usec): min=90, max=24088, avg=2983.48, stdev=4117.23 lat (usec): min=91, max=24089, avg=2984.22, stdev=4117.27 clat percentiles (usec): | 1.00th=[ 97], 5.00th=[ 113], 10.00th=[ 126], 20.00th=[ 167], | 30.00th=[ 229], 40.00th=[ 947], 50.00th=[ 1303], 60.00th=[ 1893], | 70.00th=[ 2737], 80.00th=[ 5604], 90.00th=[ 8586], 95.00th=[10945], | 99.00th=[19530], 99.50th=[22938], 99.90th=[23987], 99.95th=[23987], | 99.99th=[23987] bw ( KiB/s): min= 696, max= 1021, per=22.79%, avg=820.33, stdev=175.43, samples=3 iops : min= 174, max= 255, avg=205.00, stdev=43.71, samples=3 lat (usec) : 4=0.26%, 10=8.85%, 20=9.77%, 50=5.60%, 100=1.69% lat (usec) : 250=15.62%, 500=1.69%, 750=1.17%, 1000=4.17% lat (msec) : 2=19.01%, 4=16.28%, 10=11.46%, 20=3.78%, 50=0.65% cpu : usr=0.40%, sys=8.89%, ctx=937, majf=0, minf=35 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=23437: Fri May 16 09:59:37 2025 read: IOPS=205, BW=821KiB/s (840kB/s)(1436KiB/1750msec) clat (usec): min=3, max=26618, avg=1598.16, stdev=3529.59 lat (usec): min=3, max=26619, avg=1599.16, stdev=3529.68 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 18], 50.00th=[ 38], 60.00th=[ 1106], | 70.00th=[ 1926], 80.00th=[ 2540], 90.00th=[ 3130], 95.00th=[ 4228], | 99.00th=[21627], 99.50th=[25560], 99.90th=[26608], 99.95th=[26608], | 99.99th=[26608] bw ( KiB/s): min= 640, max= 990, per=22.66%, avg=775.33, stdev=188.00, samples=3 iops : min= 160, max= 247, avg=193.67, stdev=46.72, samples=3 write: IOPS=233, BW=935KiB/s (957kB/s)(1636KiB/1750msec) clat (usec): min=86, max=28285, avg=2841.12, stdev=3899.20 lat (usec): min=86, max=28286, avg=2842.62, stdev=3898.72 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 105], 10.00th=[ 119], 20.00th=[ 163], | 30.00th=[ 237], 40.00th=[ 865], 50.00th=[ 1418], 60.00th=[ 2057], | 70.00th=[ 2769], 80.00th=[ 4752], 90.00th=[ 8160], 95.00th=[11469], | 99.00th=[15926], 99.50th=[18220], 99.90th=[28181], 99.95th=[28181], | 99.99th=[28181] bw ( KiB/s): min= 688, max= 928, per=23.39%, avg=842.00, stdev=133.67, samples=3 iops : min= 172, max= 232, avg=210.33, stdev=33.29, samples=3 lat (usec) : 4=0.91%, 10=10.42%, 20=8.59%, 50=3.78%, 100=2.47% lat (usec) : 250=15.49%, 500=2.47%, 750=1.69%, 1000=3.65% lat (msec) : 2=15.49%, 4=20.44%, 10=9.64%, 20=4.04%, 50=0.91% cpu : usr=0.40%, sys=11.09%, ctx=993, majf=0, minf=34 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=23438: Fri May 16 09:59:37 2025 read: IOPS=228, BW=916KiB/s (938kB/s)(1564KiB/1708msec) clat (usec): min=3, max=24620, avg=1384.12, stdev=2566.05 lat (usec): min=3, max=24620, avg=1385.27, stdev=2567.46 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 19], 50.00th=[ 53], 60.00th=[ 1385], | 70.00th=[ 1876], 80.00th=[ 2376], 90.00th=[ 3032], 95.00th=[ 3720], | 99.00th=[15139], 99.50th=[21365], 99.90th=[24511], 99.95th=[24511], | 99.99th=[24511] bw ( KiB/s): min= 632, max= 1077, per=24.76%, avg=847.00, stdev=222.88, samples=3 iops : min= 158, max= 269, avg=211.67, stdev=55.59, samples=3 write: IOPS=220, BW=883KiB/s (904kB/s)(1508KiB/1708msec) clat (usec): min=91, max=28756, avg=3068.86, stdev=4462.11 lat (usec): min=91, max=28757, avg=3069.53, stdev=4462.11 clat percentiles (usec): | 1.00th=[ 99], 5.00th=[ 111], 10.00th=[ 119], 20.00th=[ 143], | 30.00th=[ 217], 40.00th=[ 824], 50.00th=[ 1303], 60.00th=[ 1827], | 70.00th=[ 2737], 80.00th=[ 4948], 90.00th=[ 9634], 95.00th=[13304], | 99.00th=[20579], 99.50th=[28181], 99.90th=[28705], 99.95th=[28705], | 99.99th=[28705] bw ( KiB/s): min= 712, max= 1077, per=23.53%, avg=847.00, stdev=200.19, samples=3 iops : min= 178, max= 269, avg=211.67, stdev=49.90, samples=3 lat (usec) : 4=0.78%, 10=10.03%, 20=10.29%, 50=4.30%, 100=1.17% lat (usec) : 250=14.97%, 500=2.08%, 750=1.30%, 1000=4.43% lat (msec) : 2=18.10%, 4=18.36%, 10=8.72%, 20=4.69%, 50=0.78% cpu : usr=0.12%, sys=9.72%, ctx=963, majf=0, minf=32 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=23439: Fri May 16 09:59:37 2025 read: IOPS=230, BW=921KiB/s (943kB/s)(1508KiB/1638msec) clat (usec): min=3, max=38285, avg=1383.30, stdev=3224.85 lat (usec): min=3, max=38286, avg=1384.03, stdev=3224.82 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 48], 60.00th=[ 1188], | 70.00th=[ 1762], 80.00th=[ 2180], 90.00th=[ 2900], 95.00th=[ 3851], | 99.00th=[16909], 99.50th=[24249], 99.90th=[38536], 99.95th=[38536], | 99.99th=[38536] bw ( KiB/s): min= 752, max= 982, per=25.39%, avg=868.67, stdev=115.04, samples=3 iops : min= 188, max= 245, avg=217.00, stdev=28.51, samples=3 write: IOPS=238, BW=955KiB/s (978kB/s)(1564KiB/1638msec) clat (usec): min=88, max=23746, avg=2828.03, stdev=3970.08 lat (usec): min=89, max=23747, avg=2829.04, stdev=3970.43 clat percentiles (usec): | 1.00th=[ 93], 5.00th=[ 111], 10.00th=[ 121], 20.00th=[ 147], | 30.00th=[ 190], 40.00th=[ 742], 50.00th=[ 1123], 60.00th=[ 1860], | 70.00th=[ 2737], 80.00th=[ 5080], 90.00th=[ 8848], 95.00th=[11338], | 99.00th=[17171], 99.50th=[20055], 99.90th=[23725], 99.95th=[23725], | 99.99th=[23725] bw ( KiB/s): min= 792, max= 1101, per=25.16%, avg=905.67, stdev=169.92, samples=3 iops : min= 198, max= 275, avg=226.33, stdev=42.34, samples=3 lat (usec) : 4=0.52%, 10=11.98%, 20=8.46%, 50=4.04%, 100=1.82% lat (usec) : 250=16.67%, 500=1.95%, 750=2.08%, 1000=4.17% lat (msec) : 2=18.36%, 4=15.76%, 10=9.11%, 20=4.43%, 50=0.65% cpu : usr=0.31%, sys=10.20%, ctx=953, majf=0, minf=34 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=3422KiB/s (3504kB/s), 821KiB/s-921KiB/s (840kB/s-943kB/s), io=5988KiB (6132kB), run=1638-1750msec WRITE: bw=3600KiB/s (3686kB/s), 883KiB/s-955KiB/s (904kB/s-978kB/s), io=6300KiB (6451kB), run=1638-1750msec rand-rw: (groupid=0, jobs=1): err= 0: pid=23440: Fri May 16 09:59:42 2025 read: IOPS=59, BW=237KiB/s (243kB/s)(1480KiB/6232msec) clat (usec): min=655, max=38975, avg=2235.33, stdev=4023.45 lat (usec): min=656, max=38975, avg=2236.14, stdev=4023.42 clat percentiles (usec): | 1.00th=[ 676], 5.00th=[ 758], 10.00th=[ 807], 20.00th=[ 865], | 30.00th=[ 914], 40.00th=[ 996], 50.00th=[ 1139], 60.00th=[ 1254], | 70.00th=[ 1401], 80.00th=[ 1663], 90.00th=[ 3425], 95.00th=[ 9241], | 99.00th=[22676], 99.50th=[28967], 99.90th=[39060], 99.95th=[39060], | 99.99th=[39060] bw ( KiB/s): min= 136, max= 360, per=24.33%, avg=232.58, stdev=64.60, samples=12 iops : min= 34, max= 90, avg=58.08, stdev=16.09, samples=12 write: IOPS=63, BW=255KiB/s (262kB/s)(1592KiB/6232msec) clat (usec): min=6578, max=42711, avg=13561.12, stdev=5172.32 lat (usec): min=6579, max=42712, avg=13562.17, stdev=5172.24 clat percentiles (usec): | 1.00th=[ 6652], 5.00th=[ 7439], 10.00th=[ 7963], 20.00th=[ 8979], | 30.00th=[10290], 40.00th=[11731], 50.00th=[13042], 60.00th=[14353], | 70.00th=[15401], 80.00th=[16581], 90.00th=[19268], 95.00th=[22152], | 99.00th=[33162], 99.50th=[40109], 99.90th=[42730], 99.95th=[42730], | 99.99th=[42730] bw ( KiB/s): min= 176, max= 336, per=25.17%, avg=253.25, stdev=53.03, samples=12 iops : min= 44, max= 84, avg=63.25, stdev=13.21, samples=12 lat (usec) : 750=1.95%, 1000=17.45% lat (msec) : 2=20.83%, 4=3.65%, 10=16.67%, 20=34.51%, 50=4.95% cpu : usr=0.19%, sys=1.81%, ctx=826, majf=0, minf=31 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=23441: Fri May 16 09:59:42 2025 read: IOPS=57, BW=229KiB/s (235kB/s)(1436KiB/6260msec) clat (usec): min=666, max=27769, avg=1690.23, stdev=2388.07 lat (usec): min=666, max=27770, avg=1690.98, stdev=2388.06 clat percentiles (usec): | 1.00th=[ 709], 5.00th=[ 766], 10.00th=[ 807], 20.00th=[ 881], | 30.00th=[ 930], 40.00th=[ 988], 50.00th=[ 1106], 60.00th=[ 1254], | 70.00th=[ 1434], 80.00th=[ 1663], 90.00th=[ 2442], 95.00th=[ 4490], | 99.00th=[14877], 99.50th=[19006], 99.90th=[27657], 99.95th=[27657], | 99.99th=[27657] bw ( KiB/s): min= 104, max= 376, per=24.06%, avg=230.00, stdev=71.97, samples=12 iops : min= 26, max= 94, avg=57.50, stdev=17.99, samples=12 write: IOPS=65, BW=261KiB/s (268kB/s)(1636KiB/6260msec) clat (usec): min=6890, max=64611, avg=13799.22, stdev=5464.38 lat (usec): min=6891, max=64612, avg=13800.15, stdev=5464.35 clat percentiles (usec): | 1.00th=[ 7046], 5.00th=[ 7767], 10.00th=[ 8225], 20.00th=[ 9503], | 30.00th=[10945], 40.00th=[12256], 50.00th=[13304], 60.00th=[14222], | 70.00th=[15270], 80.00th=[16581], 90.00th=[18744], 95.00th=[21627], | 99.00th=[33817], 99.50th=[36439], 99.90th=[64750], 99.95th=[64750], | 99.99th=[64750] bw ( KiB/s): min= 160, max= 320, per=25.71%, avg=258.67, stdev=45.68, samples=12 iops : min= 40, max= 80, avg=64.67, stdev=11.42, samples=12 lat (usec) : 750=1.82%, 1000=18.10% lat (msec) : 2=20.31%, 4=4.17%, 10=13.93%, 20=38.15%, 50=3.39% lat (msec) : 100=0.13% cpu : usr=0.10%, sys=1.93%, ctx=812, majf=0, minf=33 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=23442: Fri May 16 09:59:42 2025 read: IOPS=64, BW=257KiB/s (263kB/s)(1564KiB/6087msec) clat (usec): min=560, max=22821, avg=1950.02, stdev=2993.16 lat (usec): min=560, max=22821, avg=1950.79, stdev=2993.16 clat percentiles (usec): | 1.00th=[ 660], 5.00th=[ 758], 10.00th=[ 816], 20.00th=[ 881], | 30.00th=[ 947], 40.00th=[ 1020], 50.00th=[ 1123], 60.00th=[ 1237], | 70.00th=[ 1369], 80.00th=[ 1680], 90.00th=[ 2671], 95.00th=[ 7570], | 99.00th=[17433], 99.50th=[22152], 99.90th=[22938], 99.95th=[22938], | 99.99th=[22938] bw ( KiB/s): min= 112, max= 408, per=27.20%, avg=260.00, stdev=93.58, samples=12 iops : min= 28, max= 102, avg=65.00, stdev=23.39, samples=12 write: IOPS=61, BW=248KiB/s (254kB/s)(1508KiB/6087msec) clat (usec): min=6957, max=65712, avg=14101.83, stdev=5615.57 lat (usec): min=6958, max=65714, avg=14102.81, stdev=5615.58 clat percentiles (usec): | 1.00th=[ 7308], 5.00th=[ 7832], 10.00th=[ 8455], 20.00th=[ 9634], | 30.00th=[11207], 40.00th=[12387], 50.00th=[13698], 60.00th=[14484], | 70.00th=[15533], 80.00th=[16712], 90.00th=[19792], 95.00th=[23200], | 99.00th=[34341], 99.50th=[36439], 99.90th=[65799], 99.95th=[65799], | 99.99th=[65799] bw ( KiB/s): min= 144, max= 320, per=24.59%, avg=247.33, stdev=54.09, samples=12 iops : min= 36, max= 80, avg=61.83, stdev=13.52, samples=12 lat (usec) : 750=1.95%, 1000=17.45% lat (msec) : 2=23.57%, 4=4.69%, 10=12.63%, 20=34.90%, 50=4.69% lat (msec) : 100=0.13% cpu : usr=0.13%, sys=1.92%, ctx=815, majf=0, minf=34 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=23443: Fri May 16 09:59:42 2025 read: IOPS=61, BW=244KiB/s (250kB/s)(1508KiB/6170msec) clat (usec): min=600, max=25744, avg=1859.52, stdev=2673.21 lat (usec): min=601, max=25745, avg=1860.31, stdev=2673.23 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 766], 10.00th=[ 807], 20.00th=[ 889], | 30.00th=[ 955], 40.00th=[ 1029], 50.00th=[ 1106], 60.00th=[ 1221], | 70.00th=[ 1319], 80.00th=[ 1598], 90.00th=[ 2671], 95.00th=[ 7111], | 99.00th=[15270], 99.50th=[22938], 99.90th=[25822], 99.95th=[25822], | 99.99th=[25822] bw ( KiB/s): min= 112, max= 344, per=25.10%, avg=239.92, stdev=67.03, samples=12 iops : min= 28, max= 86, avg=59.92, stdev=16.77, samples=12 write: IOPS=63, BW=253KiB/s (260kB/s)(1564KiB/6170msec) clat (usec): min=6436, max=47774, avg=13966.06, stdev=5825.44 lat (usec): min=6437, max=47775, avg=13966.97, stdev=5825.44 clat percentiles (usec): | 1.00th=[ 6980], 5.00th=[ 7373], 10.00th=[ 8225], 20.00th=[ 9241], | 30.00th=[10683], 40.00th=[12125], 50.00th=[13173], 60.00th=[14222], | 70.00th=[15401], 80.00th=[16909], 90.00th=[19530], 95.00th=[23462], | 99.00th=[38536], 99.50th=[44303], 99.90th=[47973], 99.95th=[47973], | 99.99th=[47973] bw ( KiB/s): min= 136, max= 320, per=24.91%, avg=250.58, stdev=55.88, samples=12 iops : min= 34, max= 80, avg=62.58, stdev=13.98, samples=12 lat (usec) : 750=1.69%, 1000=16.80% lat (msec) : 2=23.83%, 4=2.60%, 10=15.62%, 20=34.51%, 50=4.95% cpu : usr=0.19%, sys=1.91%, ctx=827, majf=0, minf=33 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=957KiB/s (980kB/s), 229KiB/s-257KiB/s (235kB/s-263kB/s), io=5988KiB (6132kB), run=6087-6260msec WRITE: bw=1006KiB/s (1031kB/s), 248KiB/s-261KiB/s (254kB/s-268kB/s), io=6300KiB (6451kB), run=6087-6260msec