== sanity test 398b: DIO and buffer IO race ============== 05:54:27 (1713347667) /usr/bin/fio 12+0 records in 12+0 records out 12582912 bytes (13 MB) copied, 0.0759879 s, 166 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=20986: Wed Apr 17 05:54:31 2024 read: IOPS=198, BW=794KiB/s (813kB/s)(1480KiB/1865msec) clat (usec): min=3, max=28744, avg=1422.99, stdev=3391.71 lat (usec): min=3, max=28744, avg=1423.63, stdev=3391.69 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 23], 60.00th=[ 734], | 70.00th=[ 1483], 80.00th=[ 2114], 90.00th=[ 3064], 95.00th=[ 5014], | 99.00th=[22414], 99.50th=[26608], 99.90th=[28705], 99.95th=[28705], | 99.99th=[28705] bw ( KiB/s): min= 688, max= 984, per=26.09%, avg=808.00, stdev=155.74, samples=3 iops : min= 172, max= 246, avg=202.00, stdev=38.94, samples=3 write: IOPS=213, BW=854KiB/s (874kB/s)(1592KiB/1865msec) clat (usec): min=91, max=32701, avg=3316.95, stdev=5124.01 lat (usec): min=92, max=32702, avg=3317.57, stdev=5124.01 clat percentiles (usec): | 1.00th=[ 97], 5.00th=[ 111], 10.00th=[ 120], 20.00th=[ 147], | 30.00th=[ 196], 40.00th=[ 668], 50.00th=[ 1205], 60.00th=[ 1762], | 70.00th=[ 2474], 80.00th=[ 5997], 90.00th=[10290], 95.00th=[14615], | 99.00th=[22152], 99.50th=[25297], 99.90th=[32637], 99.95th=[32637], | 99.99th=[32637] bw ( KiB/s): min= 712, max= 1088, per=27.41%, avg=893.33, stdev=188.35, samples=3 iops : min= 178, max= 272, avg=223.33, stdev=47.09, samples=3 lat (usec) : 4=0.52%, 10=13.28%, 20=8.59%, 50=4.30%, 100=1.82% lat (usec) : 250=17.71%, 500=1.69%, 750=2.34%, 1000=4.30% lat (msec) : 2=15.23%, 4=15.23%, 10=8.20%, 20=5.08%, 50=1.69% cpu : usr=0.27%, sys=8.42%, ctx=839, 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=20987: Wed Apr 17 05:54:31 2024 read: IOPS=198, BW=792KiB/s (811kB/s)(1436KiB/1813msec) clat (usec): min=3, max=37875, avg=1382.72, stdev=3807.97 lat (usec): min=4, max=37876, avg=1383.25, stdev=3808.01 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 15], 50.00th=[ 25], 60.00th=[ 963], | 70.00th=[ 1483], 80.00th=[ 2024], 90.00th=[ 2933], 95.00th=[ 4490], | 99.00th=[23462], 99.50th=[35390], 99.90th=[38011], 99.95th=[38011], | 99.99th=[38011] bw ( KiB/s): min= 752, max= 1008, per=27.10%, avg=839.33, stdev=146.10, samples=3 iops : min= 188, max= 252, avg=209.67, stdev=36.67, samples=3 write: IOPS=225, BW=902KiB/s (924kB/s)(1636KiB/1813msec) clat (usec): min=97, max=30067, avg=3181.72, stdev=5358.43 lat (usec): min=98, max=30068, avg=3182.34, stdev=5358.44 clat percentiles (usec): | 1.00th=[ 101], 5.00th=[ 114], 10.00th=[ 120], 20.00th=[ 145], | 30.00th=[ 196], 40.00th=[ 416], 50.00th=[ 1020], 60.00th=[ 1549], | 70.00th=[ 2245], 80.00th=[ 3818], 90.00th=[10945], 95.00th=[15139], | 99.00th=[23462], 99.50th=[27919], 99.90th=[30016], 99.95th=[30016], | 99.99th=[30016] bw ( KiB/s): min= 814, max= 1136, per=28.95%, avg=943.33, stdev=170.09, samples=3 iops : min= 203, max= 284, avg=235.67, stdev=42.71, samples=3 lat (usec) : 4=0.26%, 10=13.02%, 20=8.59%, 50=3.52%, 100=0.78% lat (usec) : 250=19.53%, 500=2.21%, 750=1.56%, 1000=5.86% lat (msec) : 2=17.58%, 4=14.58%, 10=5.60%, 20=4.95%, 50=1.95% cpu : usr=0.28%, sys=10.04%, ctx=831, 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=20988: Wed Apr 17 05:54:31 2024 read: IOPS=202, BW=809KiB/s (829kB/s)(1564KiB/1933msec) clat (usec): min=3, max=25946, avg=1374.22, stdev=3186.24 lat (usec): min=3, max=25946, avg=1374.72, stdev=3186.23 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 19], 60.00th=[ 938], | 70.00th=[ 1582], 80.00th=[ 2073], 90.00th=[ 2966], 95.00th=[ 4228], | 99.00th=[23200], 99.50th=[25297], 99.90th=[25822], 99.95th=[25822], | 99.99th=[25822] bw ( KiB/s): min= 648, max= 944, per=24.97%, avg=773.33, stdev=153.12, samples=3 iops : min= 162, max= 236, avg=193.33, stdev=38.28, samples=3 write: IOPS=195, BW=780KiB/s (799kB/s)(1508KiB/1933msec) clat (usec): min=89, max=47976, avg=3666.89, stdev=6675.90 lat (usec): min=89, max=47978, avg=3667.56, stdev=6675.95 clat percentiles (usec): | 1.00th=[ 90], 5.00th=[ 109], 10.00th=[ 119], 20.00th=[ 133], | 30.00th=[ 174], 40.00th=[ 355], 50.00th=[ 1074], 60.00th=[ 1696], | 70.00th=[ 2311], 80.00th=[ 4686], 90.00th=[12125], 95.00th=[17433], | 99.00th=[32113], 99.50th=[47449], 99.90th=[47973], 99.95th=[47973], | 99.99th=[47973] bw ( KiB/s): min= 672, max= 880, per=23.65%, avg=770.67, stdev=104.41, samples=3 iops : min= 168, max= 220, avg=192.67, stdev=26.10, samples=3 lat (usec) : 4=0.39%, 10=14.84%, 20=10.42%, 50=2.47%, 100=1.82% lat (usec) : 250=18.36%, 500=0.52%, 750=1.30%, 1000=4.56% lat (msec) : 2=17.32%, 4=14.84%, 10=5.47%, 20=5.21%, 50=2.47% cpu : usr=0.26%, sys=7.45%, ctx=807, 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=20989: Wed Apr 17 05:54:31 2024 read: IOPS=197, BW=792KiB/s (811kB/s)(1508KiB/1905msec) clat (usec): min=3, max=29388, avg=1059.63, stdev=2142.89 lat (usec): min=4, max=29388, avg=1060.36, stdev=2143.06 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 15], 50.00th=[ 23], 60.00th=[ 873], | 70.00th=[ 1598], 80.00th=[ 2114], 90.00th=[ 2704], 95.00th=[ 3294], | 99.00th=[ 8094], 99.50th=[15139], 99.90th=[29492], 99.95th=[29492], | 99.99th=[29492] bw ( KiB/s): min= 584, max= 984, per=25.23%, avg=781.33, stdev=200.05, samples=3 iops : min= 146, max= 246, avg=195.33, stdev=50.01, samples=3 write: IOPS=205, BW=821KiB/s (841kB/s)(1564KiB/1905msec) clat (usec): min=81, max=45716, avg=3799.57, stdev=6604.28 lat (usec): min=82, max=45717, avg=3800.18, stdev=6604.33 clat percentiles (usec): | 1.00th=[ 93], 5.00th=[ 108], 10.00th=[ 117], 20.00th=[ 133], | 30.00th=[ 165], 40.00th=[ 269], 50.00th=[ 922], 60.00th=[ 1696], | 70.00th=[ 2376], 80.00th=[ 5669], 90.00th=[13435], 95.00th=[17695], | 99.00th=[28705], 99.50th=[43254], 99.90th=[45876], 99.95th=[45876], | 99.99th=[45876] bw ( KiB/s): min= 752, max= 952, per=25.94%, avg=845.33, stdev=100.66, samples=3 iops : min= 188, max= 238, avg=211.33, stdev=25.17, samples=3 lat (usec) : 4=0.26%, 10=13.28%, 20=9.51%, 50=4.04%, 100=1.69% lat (usec) : 250=19.53%, 500=1.69%, 750=1.69%, 1000=4.95% lat (msec) : 2=15.62%, 4=14.71%, 10=4.82%, 20=5.99%, 50=2.21% cpu : usr=0.16%, sys=7.72%, ctx=833, 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=3098KiB/s (3172kB/s), 792KiB/s-809KiB/s (811kB/s-829kB/s), io=5988KiB (6132kB), run=1813-1933msec WRITE: bw=3259KiB/s (3337kB/s), 780KiB/s-902KiB/s (799kB/s-924kB/s), io=6300KiB (6451kB), run=1813-1933msec rand-rw: (groupid=0, jobs=1): err= 0: pid=20982: Wed Apr 17 05:54:38 2024 read: IOPS=42, BW=171KiB/s (175kB/s)(1480KiB/8654msec) clat (usec): min=615, max=35309, avg=2115.60, stdev=3876.55 lat (usec): min=616, max=35309, avg=2116.29, stdev=3876.56 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 799], 10.00th=[ 832], 20.00th=[ 898], | 30.00th=[ 947], 40.00th=[ 1037], 50.00th=[ 1139], 60.00th=[ 1287], | 70.00th=[ 1450], 80.00th=[ 1663], 90.00th=[ 2474], 95.00th=[ 7439], | 99.00th=[20317], 99.50th=[33817], 99.90th=[35390], 99.95th=[35390], | 99.99th=[35390] bw ( KiB/s): min= 104, max= 271, per=24.82%, avg=168.76, stdev=46.66, samples=17 iops : min= 26, max= 67, avg=42.06, stdev=11.56, samples=17 write: IOPS=45, BW=184KiB/s (188kB/s)(1592KiB/8654msec) clat (usec): min=10744, max=51754, avg=19707.62, stdev=6137.54 lat (usec): min=10745, max=51755, avg=19708.48, stdev=6137.54 clat percentiles (usec): | 1.00th=[11207], 5.00th=[12256], 10.00th=[12911], 20.00th=[14222], | 30.00th=[15664], 40.00th=[17695], 50.00th=[19268], 60.00th=[20579], | 70.00th=[22152], 80.00th=[23462], 90.00th=[26084], 95.00th=[28967], | 99.00th=[45351], 99.50th=[48497], 99.90th=[51643], 99.95th=[51643], | 99.99th=[51643] bw ( KiB/s): min= 112, max= 224, per=25.64%, avg=183.35, stdev=35.76, samples=17 iops : min= 28, max= 56, avg=45.71, stdev= 8.89, samples=17 lat (usec) : 750=1.04%, 1000=16.80% lat (msec) : 2=23.70%, 4=3.26%, 10=1.17%, 20=29.43%, 50=24.48% lat (msec) : 100=0.13% cpu : usr=0.07%, sys=1.36%, ctx=814, 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=20983: Wed Apr 17 05:54:38 2024 read: IOPS=40, BW=163KiB/s (167kB/s)(1436KiB/8801msec) clat (usec): min=684, max=46647, avg=1982.99, stdev=3692.15 lat (usec): min=684, max=46647, avg=1984.11, stdev=3692.07 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 791], 10.00th=[ 824], 20.00th=[ 889], | 30.00th=[ 938], 40.00th=[ 1012], 50.00th=[ 1139], 60.00th=[ 1287], | 70.00th=[ 1450], 80.00th=[ 1663], 90.00th=[ 2278], 95.00th=[ 7570], | 99.00th=[14877], 99.50th=[28705], 99.90th=[46400], 99.95th=[46400], | 99.99th=[46400] bw ( KiB/s): min= 72, max= 256, per=23.88%, avg=162.35, stdev=48.81, samples=17 iops : min= 18, max= 64, avg=40.59, stdev=12.20, samples=17 write: IOPS=46, BW=186KiB/s (190kB/s)(1636KiB/8801msec) clat (usec): min=10229, max=54858, avg=19711.14, stdev=5945.29 lat (usec): min=10230, max=54860, avg=19711.99, stdev=5945.31 clat percentiles (usec): | 1.00th=[11076], 5.00th=[11863], 10.00th=[12780], 20.00th=[14222], | 30.00th=[15926], 40.00th=[18482], 50.00th=[19792], 60.00th=[20841], | 70.00th=[21890], 80.00th=[23462], 90.00th=[25560], 95.00th=[28705], | 99.00th=[40109], 99.50th=[47449], 99.90th=[54789], 99.95th=[54789], | 99.99th=[54789] bw ( KiB/s): min= 112, max= 208, per=25.60%, avg=183.06, stdev=25.12, samples=17 iops : min= 28, max= 52, avg=45.76, stdev= 6.28, samples=17 lat (usec) : 750=1.30%, 1000=16.41% lat (msec) : 2=22.40%, 4=3.65%, 10=1.30%, 20=28.65%, 50=26.17% lat (msec) : 100=0.13% cpu : usr=0.06%, sys=1.38%, ctx=820, 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=20984: Wed Apr 17 05:54:38 2024 read: IOPS=46, BW=186KiB/s (191kB/s)(1564KiB/8405msec) clat (usec): min=674, max=47091, avg=2032.88, stdev=3780.80 lat (usec): min=675, max=47091, avg=2033.63, stdev=3780.78 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 783], 10.00th=[ 832], 20.00th=[ 898], | 30.00th=[ 947], 40.00th=[ 1020], 50.00th=[ 1156], 60.00th=[ 1287], | 70.00th=[ 1401], 80.00th=[ 1614], 90.00th=[ 2442], 95.00th=[ 5604], | 99.00th=[21103], 99.50th=[24511], 99.90th=[46924], 99.95th=[46924], | 99.99th=[46924] bw ( KiB/s): min= 96, max= 312, per=27.85%, avg=189.38, stdev=73.09, samples=16 iops : min= 24, max= 78, avg=47.25, stdev=18.29, samples=16 write: IOPS=44, BW=179KiB/s (184kB/s)(1508KiB/8405msec) clat (usec): min=10917, max=60538, avg=20155.71, stdev=6320.05 lat (usec): min=10917, max=60538, avg=20156.56, stdev=6320.08 clat percentiles (usec): | 1.00th=[11076], 5.00th=[12256], 10.00th=[13042], 20.00th=[14353], | 30.00th=[16188], 40.00th=[18744], 50.00th=[20055], 60.00th=[21365], | 70.00th=[22676], 80.00th=[23987], 90.00th=[26346], 95.00th=[29492], | 99.00th=[49546], 99.50th=[52691], 99.90th=[60556], 99.95th=[60556], | 99.99th=[60556] bw ( KiB/s): min= 120, max= 208, per=24.88%, avg=177.88, stdev=28.48, samples=16 iops : min= 30, max= 52, avg=44.38, stdev= 7.08, samples=16 lat (usec) : 750=1.56%, 1000=17.84% lat (msec) : 2=24.22%, 4=3.65%, 10=1.56%, 20=26.56%, 50=24.35% lat (msec) : 100=0.26% cpu : usr=0.06%, sys=1.37%, ctx=808, 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=20985: Wed Apr 17 05:54:38 2024 read: IOPS=43, BW=173KiB/s (177kB/s)(1508KiB/8732msec) clat (usec): min=656, max=29121, avg=2150.19, stdev=3338.24 lat (usec): min=656, max=29122, avg=2150.84, stdev=3338.24 clat percentiles (usec): | 1.00th=[ 725], 5.00th=[ 775], 10.00th=[ 816], 20.00th=[ 881], | 30.00th=[ 930], 40.00th=[ 1012], 50.00th=[ 1156], 60.00th=[ 1287], | 70.00th=[ 1467], 80.00th=[ 1860], 90.00th=[ 3556], 95.00th=[10421], | 99.00th=[19530], 99.50th=[21365], 99.90th=[29230], 99.95th=[29230], | 99.99th=[29230] bw ( KiB/s): min= 80, max= 240, per=24.90%, avg=169.35, stdev=44.60, samples=17 iops : min= 20, max= 60, avg=42.29, stdev=11.11, samples=17 write: IOPS=44, BW=179KiB/s (183kB/s)(1564KiB/8732msec) clat (usec): min=10785, max=65541, avg=20195.08, stdev=6932.41 lat (usec): min=10786, max=65542, avg=20195.95, stdev=6932.45 clat percentiles (usec): | 1.00th=[11469], 5.00th=[12256], 10.00th=[12780], 20.00th=[13829], | 30.00th=[15926], 40.00th=[18744], 50.00th=[20055], 60.00th=[21103], | 70.00th=[22414], 80.00th=[23725], 90.00th=[25822], 95.00th=[32113], | 99.00th=[47449], 99.50th=[53216], 99.90th=[65799], 99.95th=[65799], | 99.99th=[65799] bw ( KiB/s): min= 128, max= 216, per=24.74%, avg=176.88, stdev=27.23, samples=17 iops : min= 32, max= 54, avg=44.18, stdev= 6.78, samples=17 lat (usec) : 750=1.17%, 1000=17.97% lat (msec) : 2=21.22%, 4=4.04%, 10=2.21%, 20=27.08%, 50=26.04% lat (msec) : 100=0.26% cpu : usr=0.08%, sys=1.36%, ctx=811, 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=680KiB/s (697kB/s), 163KiB/s-186KiB/s (167kB/s-191kB/s), io=5988KiB (6132kB), run=8405-8801msec WRITE: bw=716KiB/s (733kB/s), 179KiB/s-186KiB/s (183kB/s-190kB/s), io=6300KiB (6451kB), run=8405-8801msec