== sanity test 398b: DIO and buffer IO race ============== 10:01:04 (1747404064) /usr/bin/fio 12+0 records in 12+0 records out 12582912 bytes (13 MB) copied, 0.0551968 s, 228 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=23365: Fri May 16 10:01:07 2025 read: IOPS=191, BW=764KiB/s (783kB/s)(1480KiB/1936msec) clat (usec): min=3, max=36470, avg=1214.67, stdev=2801.77 lat (usec): min=4, max=36472, avg=1215.25, stdev=2801.84 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 28], 60.00th=[ 1074], | 70.00th=[ 1516], 80.00th=[ 2147], 90.00th=[ 2835], 95.00th=[ 3687], | 99.00th=[15926], 99.50th=[18482], 99.90th=[36439], 99.95th=[36439], | 99.99th=[36439] bw ( KiB/s): min= 672, max= 808, per=23.80%, avg=736.00, stdev=68.35, samples=3 iops : min= 168, max= 202, avg=184.00, stdev=17.09, samples=3 write: IOPS=205, BW=822KiB/s (842kB/s)(1592KiB/1936msec) clat (usec): min=90, max=37099, avg=3713.86, stdev=5610.16 lat (usec): min=90, max=37100, avg=3714.56, stdev=5610.18 clat percentiles (usec): | 1.00th=[ 101], 5.00th=[ 113], 10.00th=[ 124], 20.00th=[ 155], | 30.00th=[ 198], 40.00th=[ 791], 50.00th=[ 1237], 60.00th=[ 1991], | 70.00th=[ 3392], 80.00th=[ 6718], 90.00th=[10945], 95.00th=[16909], | 99.00th=[23200], 99.50th=[34866], 99.90th=[36963], 99.95th=[36963], | 99.99th=[36963] bw ( KiB/s): min= 752, max= 832, per=24.01%, avg=781.33, stdev=44.06, samples=3 iops : min= 188, max= 208, avg=195.33, stdev=11.02, samples=3 lat (usec) : 4=0.13%, 10=10.42%, 20=10.42%, 50=5.86%, 100=0.65% lat (usec) : 250=19.14%, 500=1.04%, 750=1.17%, 1000=3.39% lat (msec) : 2=16.67%, 4=15.62%, 10=8.46%, 20=5.73%, 50=1.30% cpu : usr=0.47%, sys=9.72%, ctx=890, 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=23366: Fri May 16 10:01:07 2025 read: IOPS=197, BW=788KiB/s (807kB/s)(1436KiB/1822msec) clat (usec): min=3, max=14760, avg=1045.22, stdev=1603.08 lat (usec): min=3, max=14761, avg=1045.98, stdev=1602.99 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 19], 50.00th=[ 32], 60.00th=[ 1106], | 70.00th=[ 1614], 80.00th=[ 2073], 90.00th=[ 2737], 95.00th=[ 3326], | 99.00th=[ 6849], 99.50th=[11731], 99.90th=[14746], 99.95th=[14746], | 99.99th=[14746] bw ( KiB/s): min= 696, max= 848, per=25.36%, avg=784.00, stdev=78.79, samples=3 iops : min= 174, max= 212, avg=196.00, stdev=19.70, samples=3 write: IOPS=224, BW=898KiB/s (919kB/s)(1636KiB/1822msec) clat (usec): min=93, max=36152, avg=3517.43, stdev=5092.67 lat (usec): min=94, max=36154, avg=3518.31, stdev=5092.61 clat percentiles (usec): | 1.00th=[ 105], 5.00th=[ 122], 10.00th=[ 137], 20.00th=[ 178], | 30.00th=[ 253], 40.00th=[ 930], 50.00th=[ 1352], 60.00th=[ 1991], | 70.00th=[ 3064], 80.00th=[ 5997], 90.00th=[10945], 95.00th=[13042], | 99.00th=[20841], 99.50th=[22152], 99.90th=[35914], 99.95th=[35914], | 99.99th=[35914] bw ( KiB/s): min= 752, max= 1016, per=25.98%, avg=845.33, stdev=148.02, samples=3 iops : min= 188, max= 254, avg=211.33, stdev=37.00, samples=3 lat (usec) : 4=0.52%, 10=7.94%, 20=11.33%, 50=4.43%, 100=0.78% lat (usec) : 250=15.89%, 500=2.86%, 750=1.82%, 1000=4.43% lat (msec) : 2=18.75%, 4=16.54%, 10=8.07%, 20=5.73%, 50=0.91% cpu : usr=0.27%, sys=9.01%, ctx=915, 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=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=23367: Fri May 16 10:01:07 2025 read: IOPS=206, BW=826KiB/s (846kB/s)(1564KiB/1894msec) clat (usec): min=3, max=25232, avg=1367.97, stdev=2671.93 lat (usec): min=3, max=25233, avg=1368.74, stdev=2672.00 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 34], 60.00th=[ 1418], | 70.00th=[ 1844], 80.00th=[ 2343], 90.00th=[ 2966], 95.00th=[ 3752], | 99.00th=[17433], 99.50th=[23987], 99.90th=[25297], 99.95th=[25297], | 99.99th=[25297] bw ( KiB/s): min= 616, max= 856, per=24.92%, avg=770.67, stdev=134.18, samples=3 iops : min= 154, max= 214, avg=192.67, stdev=33.55, samples=3 write: IOPS=199, BW=796KiB/s (815kB/s)(1508KiB/1894msec) clat (usec): min=95, max=55538, avg=3577.75, stdev=5351.66 lat (usec): min=95, max=55539, avg=3578.50, stdev=5351.70 clat percentiles (usec): | 1.00th=[ 98], 5.00th=[ 115], 10.00th=[ 130], 20.00th=[ 167], | 30.00th=[ 318], 40.00th=[ 996], 50.00th=[ 1598], 60.00th=[ 2089], | 70.00th=[ 2966], 80.00th=[ 6849], 90.00th=[10028], 95.00th=[13829], | 99.00th=[21627], 99.50th=[27919], 99.90th=[55313], 99.95th=[55313], | 99.99th=[55313] bw ( KiB/s): min= 720, max= 800, per=23.36%, avg=760.00, stdev=40.00, samples=3 iops : min= 180, max= 200, avg=190.00, stdev=10.00, samples=3 lat (usec) : 4=0.78%, 10=11.59%, 20=9.24%, 50=4.95%, 100=0.52% lat (usec) : 250=14.19%, 500=1.69%, 750=1.30%, 1000=4.17% lat (msec) : 2=16.93%, 4=19.14%, 10=9.64%, 20=4.82%, 50=0.91% lat (msec) : 100=0.13% cpu : usr=0.37%, sys=9.51%, ctx=955, 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=23368: Fri May 16 10:01:07 2025 read: IOPS=196, BW=786KiB/s (805kB/s)(1508KiB/1918msec) clat (usec): min=3, max=17351, avg=1054.42, stdev=1783.79 lat (usec): min=3, max=17352, avg=1054.99, stdev=1783.81 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 26], 60.00th=[ 971], | 70.00th=[ 1598], 80.00th=[ 2147], 90.00th=[ 3032], 95.00th=[ 3490], | 99.00th=[ 7635], 99.50th=[13829], 99.90th=[17433], 99.95th=[17433], | 99.99th=[17433] bw ( KiB/s): min= 632, max= 856, per=23.29%, avg=720.00, stdev=119.47, samples=3 iops : min= 158, max= 214, avg=180.00, stdev=29.87, samples=3 write: IOPS=203, BW=815KiB/s (835kB/s)(1564KiB/1918msec) clat (usec): min=82, max=37012, avg=3867.05, stdev=5657.15 lat (usec): min=82, max=37012, avg=3867.72, stdev=5657.17 clat percentiles (usec): | 1.00th=[ 103], 5.00th=[ 116], 10.00th=[ 130], 20.00th=[ 169], | 30.00th=[ 221], 40.00th=[ 938], 50.00th=[ 1434], 60.00th=[ 2278], | 70.00th=[ 3720], 80.00th=[ 6652], 90.00th=[11469], 95.00th=[15664], | 99.00th=[26608], 99.50th=[36439], 99.90th=[36963], 99.95th=[36963], | 99.99th=[36963] bw ( KiB/s): min= 672, max= 856, per=24.26%, avg=789.33, stdev=101.93, samples=3 iops : min= 168, max= 214, avg=197.33, stdev=25.48, samples=3 lat (usec) : 4=0.13%, 10=10.81%, 20=11.20%, 50=5.08%, 100=1.43% lat (usec) : 250=16.02%, 500=2.08%, 750=0.91%, 1000=2.86% lat (msec) : 2=16.02%, 4=17.84%, 10=8.07%, 20=6.64%, 50=0.91% cpu : usr=0.42%, sys=8.56%, ctx=947, 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=3093KiB/s (3167kB/s), 764KiB/s-826KiB/s (783kB/s-846kB/s), io=5988KiB (6132kB), run=1822-1936msec WRITE: bw=3254KiB/s (3332kB/s), 796KiB/s-898KiB/s (815kB/s-919kB/s), io=6300KiB (6451kB), run=1822-1936msec rand-rw: (groupid=0, jobs=1): err= 0: pid=23360: Fri May 16 10:01:13 2025 read: IOPS=49, BW=198KiB/s (203kB/s)(1480KiB/7471msec) clat (usec): min=676, max=26920, avg=2169.68, stdev=3378.45 lat (usec): min=677, max=26921, avg=2170.50, stdev=3378.48 clat percentiles (usec): | 1.00th=[ 709], 5.00th=[ 824], 10.00th=[ 865], 20.00th=[ 922], | 30.00th=[ 988], 40.00th=[ 1057], 50.00th=[ 1188], 60.00th=[ 1352], | 70.00th=[ 1532], 80.00th=[ 2024], 90.00th=[ 3163], 95.00th=[ 6980], | 99.00th=[20055], 99.50th=[25822], 99.90th=[26870], 99.95th=[26870], | 99.99th=[26870] bw ( KiB/s): min= 136, max= 312, per=25.03%, avg=196.50, stdev=51.17, samples=14 iops : min= 34, max= 78, avg=49.07, stdev=12.74, samples=14 write: IOPS=53, BW=213KiB/s (218kB/s)(1592KiB/7471msec) clat (usec): min=8949, max=35416, avg=16706.21, stdev=4904.57 lat (usec): min=8951, max=35417, avg=16707.25, stdev=4904.60 clat percentiles (usec): | 1.00th=[ 9110], 5.00th=[10290], 10.00th=[11076], 20.00th=[11994], | 30.00th=[13435], 40.00th=[15008], 50.00th=[16188], 60.00th=[17171], | 70.00th=[19006], 80.00th=[20579], 90.00th=[22938], 95.00th=[25822], | 99.00th=[33162], 99.50th=[33424], 99.90th=[35390], 99.95th=[35390], | 99.99th=[35390] bw ( KiB/s): min= 136, max= 256, per=25.66%, avg=211.93, stdev=37.84, samples=14 iops : min= 34, max= 64, avg=52.93, stdev= 9.43, samples=14 lat (usec) : 750=1.04%, 1000=14.19% lat (msec) : 2=22.66%, 4=6.64%, 10=3.65%, 20=40.36%, 50=11.46% cpu : usr=0.17%, sys=1.70%, ctx=835, 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=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=23361: Fri May 16 10:01:13 2025 read: IOPS=47, BW=188KiB/s (193kB/s)(1436KiB/7625msec) clat (usec): min=726, max=27043, avg=1950.00, stdev=2881.97 lat (usec): min=727, max=27044, avg=1950.81, stdev=2881.98 clat percentiles (usec): | 1.00th=[ 758], 5.00th=[ 824], 10.00th=[ 873], 20.00th=[ 955], | 30.00th=[ 1012], 40.00th=[ 1090], 50.00th=[ 1188], 60.00th=[ 1303], | 70.00th=[ 1500], 80.00th=[ 1827], 90.00th=[ 2802], 95.00th=[ 4293], | 99.00th=[16909], 99.50th=[20317], 99.90th=[27132], 99.95th=[27132], | 99.99th=[27132] bw ( KiB/s): min= 80, max= 288, per=23.91%, avg=187.67, stdev=52.43, samples=15 iops : min= 20, max= 72, avg=46.87, stdev=13.03, samples=15 write: IOPS=53, BW=215KiB/s (220kB/s)(1636KiB/7625msec) clat (usec): min=9054, max=42402, avg=16885.75, stdev=5020.20 lat (usec): min=9055, max=42402, avg=16886.77, stdev=5020.19 clat percentiles (usec): | 1.00th=[ 9372], 5.00th=[10552], 10.00th=[11207], 20.00th=[12387], | 30.00th=[13829], 40.00th=[15401], 50.00th=[16909], 60.00th=[17957], | 70.00th=[18744], 80.00th=[19792], 90.00th=[22414], 95.00th=[24773], | 99.00th=[36963], 99.50th=[37487], 99.90th=[42206], 99.95th=[42206], | 99.99th=[42206] bw ( KiB/s): min= 144, max= 256, per=25.63%, avg=211.67, stdev=35.11, samples=15 iops : min= 36, max= 64, avg=52.87, stdev= 8.77, samples=15 lat (usec) : 750=0.26%, 1000=12.50% lat (msec) : 2=26.30%, 4=5.21%, 10=2.60%, 20=42.97%, 50=10.16% cpu : usr=0.16%, sys=1.65%, ctx=807, 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=23362: Fri May 16 10:01:13 2025 read: IOPS=53, BW=213KiB/s (218kB/s)(1564KiB/7332msec) clat (usec): min=723, max=31062, avg=1922.07, stdev=2832.69 lat (usec): min=724, max=31062, avg=1922.90, stdev=2832.71 clat percentiles (usec): | 1.00th=[ 750], 5.00th=[ 824], 10.00th=[ 865], 20.00th=[ 922], | 30.00th=[ 996], 40.00th=[ 1090], 50.00th=[ 1205], 60.00th=[ 1319], | 70.00th=[ 1467], 80.00th=[ 1745], 90.00th=[ 2671], 95.00th=[ 5997], | 99.00th=[17171], 99.50th=[20317], 99.90th=[31065], 99.95th=[31065], | 99.99th=[31065] bw ( KiB/s): min= 104, max= 400, per=27.65%, avg=217.07, stdev=95.97, samples=14 iops : min= 26, max= 100, avg=54.21, stdev=24.05, samples=14 write: IOPS=51, BW=206KiB/s (211kB/s)(1508KiB/7332msec) clat (usec): min=9005, max=44941, avg=17423.64, stdev=5583.11 lat (usec): min=9006, max=44943, avg=17424.66, stdev=5583.18 clat percentiles (usec): | 1.00th=[ 9634], 5.00th=[10552], 10.00th=[11207], 20.00th=[12125], | 30.00th=[14222], 40.00th=[16057], 50.00th=[17171], 60.00th=[18220], | 70.00th=[19530], 80.00th=[20579], 90.00th=[23462], 95.00th=[27132], | 99.00th=[39060], 99.50th=[42730], 99.90th=[44827], 99.95th=[44827], | 99.99th=[44827] bw ( KiB/s): min= 144, max= 239, per=24.69%, avg=203.93, stdev=33.82, samples=14 iops : min= 36, max= 59, avg=50.93, stdev= 8.40, samples=14 lat (usec) : 750=0.52%, 1000=14.97% lat (msec) : 2=27.08%, 4=5.21%, 10=2.34%, 20=37.76%, 50=12.11% cpu : usr=0.08%, sys=1.77%, ctx=818, 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=23363: Fri May 16 10:01:13 2025 read: IOPS=49, BW=200KiB/s (205kB/s)(1508KiB/7550msec) clat (usec): min=697, max=51897, avg=2215.57, stdev=4287.93 lat (usec): min=698, max=51898, avg=2216.39, stdev=4287.94 clat percentiles (usec): | 1.00th=[ 725], 5.00th=[ 799], 10.00th=[ 857], 20.00th=[ 914], | 30.00th=[ 971], 40.00th=[ 1029], 50.00th=[ 1139], 60.00th=[ 1352], | 70.00th=[ 1565], 80.00th=[ 2024], 90.00th=[ 2933], 95.00th=[ 8455], | 99.00th=[24511], 99.50th=[36963], 99.90th=[51643], 99.95th=[51643], | 99.99th=[51643] bw ( KiB/s): min= 112, max= 280, per=25.14%, avg=197.33, stdev=54.65, samples=15 iops : min= 28, max= 70, avg=49.33, stdev=13.66, samples=15 write: IOPS=51, BW=207KiB/s (212kB/s)(1564KiB/7550msec) clat (usec): min=8595, max=47056, avg=17127.96, stdev=5351.15 lat (usec): min=8596, max=47056, avg=17129.00, stdev=5351.20 clat percentiles (usec): | 1.00th=[ 9241], 5.00th=[10290], 10.00th=[11207], 20.00th=[12256], | 30.00th=[13829], 40.00th=[15664], 50.00th=[16909], 60.00th=[17957], | 70.00th=[19006], 80.00th=[20317], 90.00th=[22414], 95.00th=[26084], | 99.00th=[38011], 99.50th=[39060], 99.90th=[46924], 99.95th=[46924], | 99.99th=[46924] bw ( KiB/s): min= 128, max= 256, per=24.92%, avg=205.87, stdev=37.70, samples=15 iops : min= 32, max= 64, avg=51.47, stdev= 9.43, samples=15 lat (usec) : 750=1.04%, 1000=16.15% lat (msec) : 2=22.01%, 4=6.51%, 10=2.73%, 20=40.23%, 50=11.20% lat (msec) : 100=0.13% cpu : usr=0.20%, sys=1.60%, ctx=829, 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=785KiB/s (804kB/s), 188KiB/s-213KiB/s (193kB/s-218kB/s), io=5988KiB (6132kB), run=7332-7625msec WRITE: bw=826KiB/s (846kB/s), 206KiB/s-215KiB/s (211kB/s-220kB/s), io=6300KiB (6451kB), run=7332-7625msec