== sanity test 398b: DIO and buffer IO race ============== 12:02:07 (1730826127) /usr/bin/fio 12+0 records in 12+0 records out 12582912 bytes (13 MB) copied, 0.103052 s, 122 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=19654: Tue Nov 5 12:02:10 2024 read: IOPS=251, BW=1007KiB/s (1031kB/s)(1480KiB/1470msec) clat (usec): min=3, max=42328, avg=1207.95, stdev=3094.61 lat (usec): min=3, max=42329, avg=1208.66, stdev=3094.66 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 18], 50.00th=[ 31], 60.00th=[ 857], | 70.00th=[ 1516], 80.00th=[ 1958], 90.00th=[ 2737], 95.00th=[ 3326], | 99.00th=[15926], 99.50th=[22676], 99.90th=[42206], 99.95th=[42206], | 99.99th=[42206] bw ( KiB/s): min= 1064, max= 1136, per=28.94%, avg=1100.00, stdev=50.91, samples=2 iops : min= 266, max= 284, avg=275.00, stdev=12.73, samples=2 write: IOPS=270, BW=1083KiB/s (1109kB/s)(1592KiB/1470msec) clat (usec): min=100, max=21056, avg=2530.80, stdev=3832.86 lat (usec): min=100, max=21056, avg=2531.88, stdev=3832.69 clat percentiles (usec): | 1.00th=[ 108], 5.00th=[ 125], 10.00th=[ 141], 20.00th=[ 167], | 30.00th=[ 210], 40.00th=[ 310], 50.00th=[ 914], 60.00th=[ 1483], | 70.00th=[ 2147], 80.00th=[ 3720], 90.00th=[ 8291], 95.00th=[10814], | 99.00th=[17957], 99.50th=[19530], 99.90th=[21103], 99.95th=[21103], | 99.99th=[21103] bw ( KiB/s): min= 992, max= 1344, per=29.20%, avg=1168.00, stdev=248.90, samples=2 iops : min= 248, max= 336, avg=292.00, stdev=62.23, samples=2 lat (usec) : 4=0.26%, 10=10.03%, 20=9.51%, 50=6.12%, 100=0.39% lat (usec) : 250=19.27%, 500=4.30%, 750=1.82%, 1000=5.08% lat (msec) : 2=16.80%, 4=14.58%, 10=7.68%, 20=3.65%, 50=0.52% cpu : usr=0.34%, sys=14.23%, ctx=854, 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=19655: Tue Nov 5 12:02:10 2024 read: IOPS=227, BW=912KiB/s (934kB/s)(1436KiB/1575msec) clat (usec): min=4, max=13078, avg=1056.59, stdev=1849.21 lat (usec): min=4, max=13079, avg=1057.24, stdev=1849.27 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 27], 60.00th=[ 775], | 70.00th=[ 1385], 80.00th=[ 1991], 90.00th=[ 2868], 95.00th=[ 3818], | 99.00th=[ 8979], 99.50th=[12911], 99.90th=[13042], 99.95th=[13042], | 99.99th=[13042] bw ( KiB/s): min= 760, max= 1104, per=24.06%, avg=914.67, stdev=174.60, samples=3 iops : min= 190, max= 276, avg=228.67, stdev=43.65, samples=3 write: IOPS=259, BW=1039KiB/s (1064kB/s)(1636KiB/1575msec) clat (usec): min=109, max=30767, avg=2898.03, stdev=4548.49 lat (usec): min=109, max=30768, avg=2898.77, stdev=4548.48 clat percentiles (usec): | 1.00th=[ 116], 5.00th=[ 133], 10.00th=[ 145], 20.00th=[ 167], | 30.00th=[ 229], 40.00th=[ 445], 50.00th=[ 1020], 60.00th=[ 1549], | 70.00th=[ 2245], 80.00th=[ 4817], 90.00th=[ 8586], 95.00th=[11600], | 99.00th=[21103], 99.50th=[25822], 99.90th=[30802], 99.95th=[30802], | 99.99th=[30802] bw ( KiB/s): min= 856, max= 1200, per=25.53%, avg=1021.33, stdev=172.39, samples=3 iops : min= 214, max= 300, avg=255.33, stdev=43.10, samples=3 lat (usec) : 10=9.90%, 20=11.46%, 50=5.08%, 100=0.39%, 250=18.49% lat (usec) : 500=4.17%, 750=1.04%, 1000=5.47% lat (msec) : 2=17.32%, 4=12.37%, 10=10.68%, 20=2.73%, 50=0.91% cpu : usr=0.57%, sys=10.48%, ctx=852, 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=19656: Tue Nov 5 12:02:10 2024 read: IOPS=248, BW=996KiB/s (1019kB/s)(1564KiB/1571msec) clat (usec): min=3, max=28697, avg=1116.04, stdev=2624.67 lat (usec): min=4, max=28698, avg=1116.99, stdev=2624.64 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 15], 50.00th=[ 25], 60.00th=[ 816], | 70.00th=[ 1287], 80.00th=[ 1991], 90.00th=[ 2540], 95.00th=[ 4113], | 99.00th=[11338], 99.50th=[24773], 99.90th=[28705], 99.95th=[28705], | 99.99th=[28705] bw ( KiB/s): min= 872, max= 1128, per=26.52%, avg=1008.00, stdev=128.75, samples=3 iops : min= 218, max= 282, avg=252.00, stdev=32.19, samples=3 write: IOPS=239, BW=960KiB/s (983kB/s)(1508KiB/1571msec) clat (usec): min=112, max=22721, avg=2964.95, stdev=4201.55 lat (usec): min=112, max=22721, avg=2965.71, stdev=4201.58 clat percentiles (usec): | 1.00th=[ 115], 5.00th=[ 129], 10.00th=[ 143], 20.00th=[ 174], | 30.00th=[ 208], 40.00th=[ 611], 50.00th=[ 1074], 60.00th=[ 1778], | 70.00th=[ 2671], 80.00th=[ 5669], 90.00th=[ 9241], 95.00th=[12125], | 99.00th=[18744], 99.50th=[19530], 99.90th=[22676], 99.95th=[22676], | 99.99th=[22676] bw ( KiB/s): min= 896, max= 1032, per=23.67%, avg=946.67, stdev=74.33, samples=3 iops : min= 224, max= 258, avg=236.67, stdev=18.58, samples=3 lat (usec) : 4=0.13%, 10=11.98%, 20=10.81%, 50=5.86%, 100=0.65% lat (usec) : 250=16.93%, 500=2.73%, 750=1.69%, 1000=5.47% lat (msec) : 2=15.76%, 4=13.67%, 10=9.90%, 20=3.91%, 50=0.52% cpu : usr=0.38%, sys=10.76%, ctx=889, 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=19657: Tue Nov 5 12:02:10 2024 read: IOPS=248, BW=993KiB/s (1017kB/s)(1508KiB/1519msec) clat (usec): min=3, max=20033, avg=1170.05, stdev=2110.06 lat (usec): min=4, max=20033, avg=1170.82, stdev=2110.16 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 18], 50.00th=[ 29], 60.00th=[ 1029], | 70.00th=[ 1582], 80.00th=[ 2024], 90.00th=[ 2835], 95.00th=[ 4424], | 99.00th=[11469], 99.50th=[13566], 99.90th=[20055], 99.95th=[20055], | 99.99th=[20055] bw ( KiB/s): min= 904, max= 1112, per=26.03%, avg=989.33, stdev=108.91, samples=3 iops : min= 226, max= 278, avg=247.33, stdev=27.23, samples=3 write: IOPS=257, BW=1030KiB/s (1054kB/s)(1564KiB/1519msec) clat (usec): min=106, max=49251, avg=2709.79, stdev=4494.07 lat (usec): min=107, max=49252, avg=2710.71, stdev=4494.01 clat percentiles (usec): | 1.00th=[ 109], 5.00th=[ 124], 10.00th=[ 139], 20.00th=[ 165], | 30.00th=[ 225], 40.00th=[ 367], 50.00th=[ 996], 60.00th=[ 1565], | 70.00th=[ 2409], 80.00th=[ 4293], 90.00th=[ 8291], 95.00th=[10552], | 99.00th=[20317], 99.50th=[24249], 99.90th=[49021], 99.95th=[49021], | 99.99th=[49021] bw ( KiB/s): min= 968, max= 1096, per=25.80%, avg=1032.00, stdev=64.00, samples=3 iops : min= 242, max= 274, avg=258.00, stdev=16.00, samples=3 lat (usec) : 4=0.39%, 10=10.29%, 20=10.68%, 50=5.08%, 100=0.52% lat (usec) : 250=17.45%, 500=3.91%, 750=1.30%, 1000=5.34% lat (msec) : 2=17.71%, 4=14.32%, 10=9.51%, 20=2.86%, 50=0.65% cpu : usr=0.40%, sys=11.53%, ctx=866, 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=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=3802KiB/s (3893kB/s), 912KiB/s-1007KiB/s (934kB/s-1031kB/s), io=5988KiB (6132kB), run=1470-1575msec WRITE: bw=4000KiB/s (4096kB/s), 960KiB/s-1083KiB/s (983kB/s-1109kB/s), io=6300KiB (6451kB), run=1470-1575msec rand-rw: (groupid=0, jobs=1): err= 0: pid=19658: Tue Nov 5 12:02:16 2024 read: IOPS=51, BW=206KiB/s (211kB/s)(1480KiB/7194msec) clat (usec): min=649, max=65926, avg=2169.41, stdev=4143.40 lat (usec): min=650, max=65928, avg=2170.41, stdev=4143.45 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 898], 10.00th=[ 947], 20.00th=[ 1037], | 30.00th=[ 1123], 40.00th=[ 1188], 50.00th=[ 1270], 60.00th=[ 1401], | 70.00th=[ 1631], 80.00th=[ 2212], 90.00th=[ 3097], 95.00th=[ 5407], | 99.00th=[13960], 99.50th=[25560], 99.90th=[65799], 99.95th=[65799], | 99.99th=[65799] bw ( KiB/s): min= 112, max= 312, per=25.04%, avg=202.79, stdev=54.18, samples=14 iops : min= 28, max= 78, avg=50.64, stdev=13.59, samples=14 write: IOPS=55, BW=221KiB/s (227kB/s)(1592KiB/7194msec) clat (usec): min=9013, max=43328, avg=16029.43, stdev=4597.66 lat (usec): min=9014, max=43328, avg=16030.56, stdev=4597.74 clat percentiles (usec): | 1.00th=[ 9634], 5.00th=[10290], 10.00th=[10814], 20.00th=[11600], | 30.00th=[12911], 40.00th=[14615], 50.00th=[15926], 60.00th=[17171], | 70.00th=[18220], 80.00th=[19268], 90.00th=[20317], 95.00th=[22152], | 99.00th=[33817], 99.50th=[38536], 99.90th=[43254], 99.95th=[43254], | 99.99th=[43254] bw ( KiB/s): min= 120, max= 256, per=25.88%, avg=220.50, stdev=35.28, samples=14 iops : min= 30, max= 64, avg=55.07, stdev= 8.79, samples=14 lat (usec) : 750=0.65%, 1000=6.77% lat (msec) : 2=30.34%, 4=7.29%, 10=2.60%, 20=44.92%, 50=7.29% lat (msec) : 100=0.13% cpu : usr=0.03%, sys=2.45%, ctx=861, 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=19659: Tue Nov 5 12:02:16 2024 read: IOPS=48, BW=194KiB/s (199kB/s)(1436KiB/7392msec) clat (usec): min=682, max=66413, avg=2313.24, stdev=4533.04 lat (usec): min=682, max=66414, avg=2314.39, stdev=4533.05 clat percentiles (usec): | 1.00th=[ 766], 5.00th=[ 881], 10.00th=[ 963], 20.00th=[ 1057], | 30.00th=[ 1172], 40.00th=[ 1237], 50.00th=[ 1336], 60.00th=[ 1483], | 70.00th=[ 1631], 80.00th=[ 2147], 90.00th=[ 3654], 95.00th=[ 4817], | 99.00th=[19792], 99.50th=[33817], 99.90th=[66323], 99.95th=[66323], | 99.99th=[66323] bw ( KiB/s): min= 80, max= 296, per=24.27%, avg=196.57, stdev=55.93, samples=14 iops : min= 20, max= 74, avg=49.14, stdev=13.98, samples=14 write: IOPS=55, BW=221KiB/s (227kB/s)(1636KiB/7392msec) clat (usec): min=8780, max=56374, avg=16016.08, stdev=4892.24 lat (usec): min=8781, max=56376, avg=16017.23, stdev=4892.33 clat percentiles (usec): | 1.00th=[ 9110], 5.00th=[10028], 10.00th=[10945], 20.00th=[11731], | 30.00th=[12780], 40.00th=[14222], 50.00th=[15795], 60.00th=[17433], | 70.00th=[18220], 80.00th=[19530], 90.00th=[20579], 95.00th=[21890], | 99.00th=[34341], 99.50th=[37487], 99.90th=[56361], 99.95th=[56361], | 99.99th=[56361] bw ( KiB/s): min= 136, max= 272, per=25.75%, avg=219.43, stdev=33.61, samples=14 iops : min= 34, max= 68, avg=54.86, stdev= 8.40, samples=14 lat (usec) : 750=0.39%, 1000=5.86% lat (msec) : 2=30.21%, 4=7.03%, 10=3.78%, 20=44.40%, 50=8.07% lat (msec) : 100=0.26% cpu : usr=0.07%, sys=2.37%, ctx=872, 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=19660: Tue Nov 5 12:02:16 2024 read: IOPS=55, BW=223KiB/s (229kB/s)(1564KiB/7005msec) clat (usec): min=727, max=19585, avg=1959.02, stdev=2130.97 lat (usec): min=728, max=19586, avg=1960.02, stdev=2130.97 clat percentiles (usec): | 1.00th=[ 807], 5.00th=[ 898], 10.00th=[ 971], 20.00th=[ 1057], | 30.00th=[ 1139], 40.00th=[ 1205], 50.00th=[ 1319], 60.00th=[ 1434], | 70.00th=[ 1663], 80.00th=[ 2180], 90.00th=[ 3359], 95.00th=[ 3916], | 99.00th=[12387], 99.50th=[14746], 99.90th=[19530], 99.95th=[19530], | 99.99th=[19530] bw ( KiB/s): min= 104, max= 352, per=27.57%, avg=223.36, stdev=74.81, samples=14 iops : min= 26, max= 88, avg=55.79, stdev=18.75, samples=14 write: IOPS=53, BW=215KiB/s (220kB/s)(1508KiB/7005msec) clat (usec): min=8729, max=65647, avg=16522.33, stdev=5884.71 lat (usec): min=8730, max=65648, avg=16523.51, stdev=5884.71 clat percentiles (usec): | 1.00th=[ 8979], 5.00th=[10028], 10.00th=[10814], 20.00th=[11731], | 30.00th=[12780], 40.00th=[14877], 50.00th=[16188], 60.00th=[17433], | 70.00th=[18482], 80.00th=[19530], 90.00th=[21103], 95.00th=[26870], | 99.00th=[38011], 99.50th=[53740], 99.90th=[65799], 99.95th=[65799], | 99.99th=[65799] bw ( KiB/s): min= 128, max= 256, per=25.21%, avg=214.79, stdev=31.28, samples=14 iops : min= 32, max= 64, avg=53.64, stdev= 7.76, samples=14 lat (usec) : 750=0.13%, 1000=6.77% lat (msec) : 2=32.55%, 4=9.11%, 10=2.99%, 20=40.36%, 50=7.81% lat (msec) : 100=0.26% cpu : usr=0.14%, sys=2.40%, ctx=887, 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=19661: Tue Nov 5 12:02:16 2024 read: IOPS=52, BW=210KiB/s (215kB/s)(1508KiB/7167msec) clat (usec): min=619, max=31761, avg=2337.26, stdev=3666.19 lat (usec): min=620, max=31761, avg=2338.20, stdev=3666.17 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 865], 10.00th=[ 930], 20.00th=[ 1057], | 30.00th=[ 1139], 40.00th=[ 1237], 50.00th=[ 1336], 60.00th=[ 1500], | 70.00th=[ 1696], 80.00th=[ 2147], 90.00th=[ 3458], 95.00th=[ 6915], | 99.00th=[22938], 99.50th=[25035], 99.90th=[31851], 99.95th=[31851], | 99.99th=[31851] bw ( KiB/s): min= 96, max= 296, per=26.02%, avg=210.79, stdev=66.70, samples=14 iops : min= 24, max= 74, avg=52.64, stdev=16.74, samples=14 write: IOPS=54, BW=218KiB/s (223kB/s)(1564KiB/7167msec) clat (usec): min=8807, max=64456, avg=16047.83, stdev=5559.53 lat (usec): min=8808, max=64457, avg=16048.99, stdev=5559.57 clat percentiles (usec): | 1.00th=[ 9110], 5.00th=[10421], 10.00th=[10945], 20.00th=[11600], | 30.00th=[12649], 40.00th=[14353], 50.00th=[15795], 60.00th=[16712], | 70.00th=[17957], 80.00th=[19006], 90.00th=[20317], 95.00th=[22414], | 99.00th=[38536], 99.50th=[53740], 99.90th=[64226], 99.95th=[64226], | 99.99th=[64226] bw ( KiB/s): min= 128, max= 248, per=25.61%, avg=218.21, stdev=36.87, samples=14 iops : min= 32, max= 62, avg=54.50, stdev= 9.29, samples=14 lat (usec) : 750=0.78%, 1000=7.16% lat (msec) : 2=30.47%, 4=6.90%, 10=3.52%, 20=43.75%, 50=7.16% lat (msec) : 100=0.26% cpu : usr=0.06%, sys=2.43%, ctx=873, 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=810KiB/s (830kB/s), 194KiB/s-223KiB/s (199kB/s-229kB/s), io=5988KiB (6132kB), run=7005-7392msec WRITE: bw=852KiB/s (873kB/s), 215KiB/s-221KiB/s (220kB/s-227kB/s), io=6300KiB (6451kB), run=7005-7392msec