== sanity test 398b: DIO and buffer IO race ============== 08:18:41 (1717157921) /usr/bin/fio 12+0 records in 12+0 records out 12582912 bytes (13 MB) copied, 0.094532 s, 133 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=19576: Fri May 31 08:18:44 2024 read: IOPS=187, BW=750KiB/s (768kB/s)(1480KiB/1973msec) clat (usec): min=3, max=48805, avg=1345.52, stdev=3761.33 lat (usec): min=3, max=48806, avg=1346.07, stdev=3761.35 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 23], 60.00th=[ 865], | 70.00th=[ 1401], 80.00th=[ 1893], 90.00th=[ 2769], 95.00th=[ 3621], | 99.00th=[21365], 99.50th=[23725], 99.90th=[49021], 99.95th=[49021], | 99.99th=[49021] bw ( KiB/s): min= 624, max= 832, per=24.78%, avg=736.00, stdev=104.92, samples=3 iops : min= 156, max= 208, avg=184.00, stdev=26.23, samples=3 write: IOPS=201, BW=807KiB/s (826kB/s)(1592KiB/1973msec) clat (usec): min=90, max=31435, avg=3676.26, stdev=5729.72 lat (usec): min=90, max=31435, avg=3676.84, stdev=5729.71 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 103], 10.00th=[ 109], 20.00th=[ 121], | 30.00th=[ 143], 40.00th=[ 570], 50.00th=[ 930], 60.00th=[ 1631], | 70.00th=[ 2409], 80.00th=[ 7898], 90.00th=[12125], 95.00th=[17695], | 99.00th=[22676], 99.50th=[27395], 99.90th=[31327], 99.95th=[31327], | 99.99th=[31327] bw ( KiB/s): min= 632, max= 912, per=25.00%, avg=781.33, stdev=140.93, samples=3 iops : min= 158, max= 228, avg=195.33, stdev=35.23, samples=3 lat (usec) : 4=1.30%, 10=14.32%, 20=6.77%, 50=4.04%, 100=3.26% lat (usec) : 250=16.80%, 500=1.43%, 750=2.21%, 1000=7.03% lat (msec) : 2=16.28%, 4=11.33%, 10=6.38%, 20=7.16%, 50=1.69% cpu : usr=0.25%, sys=7.20%, ctx=850, 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=19577: Fri May 31 08:18:44 2024 read: IOPS=178, BW=712KiB/s (729kB/s)(1436KiB/2016msec) clat (usec): min=3, max=28225, avg=1281.91, stdev=2933.01 lat (usec): min=3, max=28225, avg=1282.45, stdev=2933.02 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 21], 60.00th=[ 947], | 70.00th=[ 1516], 80.00th=[ 2040], 90.00th=[ 2704], 95.00th=[ 3851], | 99.00th=[17695], 99.50th=[21890], 99.90th=[28181], 99.95th=[28181], | 99.99th=[28181] bw ( KiB/s): min= 624, max= 792, per=23.91%, avg=710.00, stdev=73.43, samples=4 iops : min= 156, max= 198, avg=177.50, stdev=18.36, samples=4 write: IOPS=202, BW=812KiB/s (831kB/s)(1636KiB/2016msec) clat (usec): min=84, max=39002, avg=3773.48, stdev=6059.48 lat (usec): min=85, max=39003, avg=3774.33, stdev=6059.67 clat percentiles (usec): | 1.00th=[ 96], 5.00th=[ 104], 10.00th=[ 113], 20.00th=[ 126], | 30.00th=[ 163], 40.00th=[ 660], 50.00th=[ 1012], 60.00th=[ 1582], | 70.00th=[ 2409], 80.00th=[ 7504], 90.00th=[12387], 95.00th=[16450], | 99.00th=[23725], 99.50th=[26870], 99.90th=[39060], 99.95th=[39060], | 99.99th=[39060] bw ( KiB/s): min= 744, max= 856, per=25.98%, avg=812.00, stdev=51.64, samples=4 iops : min= 186, max= 214, avg=203.00, stdev=12.91, samples=4 lat (usec) : 4=1.30%, 10=15.49%, 20=6.51%, 50=2.60%, 100=2.08% lat (usec) : 250=17.58%, 500=1.43%, 750=2.21%, 1000=5.73% lat (msec) : 2=17.32%, 4=13.28%, 10=4.82%, 20=7.16%, 50=2.47% cpu : usr=0.25%, sys=7.30%, ctx=873, 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=19578: Fri May 31 08:18:44 2024 read: IOPS=204, BW=819KiB/s (839kB/s)(1564KiB/1909msec) clat (usec): min=3, max=41709, avg=1473.76, stdev=3878.04 lat (usec): min=3, max=41710, avg=1474.25, stdev=3878.07 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 20], 60.00th=[ 840], | 70.00th=[ 1516], 80.00th=[ 2073], 90.00th=[ 2868], 95.00th=[ 4359], | 99.00th=[24773], 99.50th=[28181], 99.90th=[41681], 99.95th=[41681], | 99.99th=[41681] bw ( KiB/s): min= 584, max= 1040, per=26.67%, avg=792.00, stdev=230.62, samples=3 iops : min= 146, max= 260, avg=198.00, stdev=57.65, samples=3 write: IOPS=197, BW=790KiB/s (809kB/s)(1508KiB/1909msec) clat (usec): min=83, max=32879, avg=3517.23, stdev=5657.86 lat (usec): min=83, max=32880, avg=3517.90, stdev=5657.80 clat percentiles (usec): | 1.00th=[ 89], 5.00th=[ 98], 10.00th=[ 109], 20.00th=[ 120], | 30.00th=[ 141], 40.00th=[ 235], 50.00th=[ 922], 60.00th=[ 1483], | 70.00th=[ 2573], 80.00th=[ 7046], 90.00th=[11469], 95.00th=[17433], | 99.00th=[23200], 99.50th=[26608], 99.90th=[32900], 99.95th=[32900], | 99.99th=[32900] bw ( KiB/s): min= 640, max= 1064, per=25.51%, avg=797.33, stdev=232.18, samples=3 iops : min= 160, max= 266, avg=199.33, stdev=58.05, samples=3 lat (usec) : 4=2.34%, 10=17.19%, 20=5.99%, 50=2.86%, 100=3.91% lat (usec) : 250=17.45%, 500=1.43%, 750=1.43%, 1000=4.56% lat (msec) : 2=15.23%, 4=12.63%, 10=7.29%, 20=5.60%, 50=2.08% cpu : usr=0.26%, sys=7.55%, ctx=880, 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=19579: Fri May 31 08:18:44 2024 read: IOPS=191, BW=766KiB/s (784kB/s)(1508KiB/1969msec) clat (usec): min=3, max=31688, avg=1116.91, stdev=2496.64 lat (usec): min=3, max=31690, avg=1117.45, stdev=2496.69 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 20], 60.00th=[ 873], | 70.00th=[ 1450], 80.00th=[ 1942], 90.00th=[ 2671], 95.00th=[ 3425], | 99.00th=[13435], 99.50th=[15270], 99.90th=[31589], 99.95th=[31589], | 99.99th=[31589] bw ( KiB/s): min= 688, max= 808, per=25.59%, avg=760.00, stdev=63.50, samples=3 iops : min= 172, max= 202, avg=190.00, stdev=15.87, samples=3 write: IOPS=198, BW=794KiB/s (813kB/s)(1564KiB/1969msec) clat (usec): min=87, max=39052, avg=3927.60, stdev=6329.13 lat (usec): min=88, max=39053, avg=3928.33, stdev=6329.12 clat percentiles (usec): | 1.00th=[ 95], 5.00th=[ 104], 10.00th=[ 110], 20.00th=[ 122], | 30.00th=[ 161], 40.00th=[ 449], 50.00th=[ 963], 60.00th=[ 1582], | 70.00th=[ 2671], 80.00th=[ 8848], 90.00th=[12387], 95.00th=[15795], | 99.00th=[33162], 99.50th=[35390], 99.90th=[39060], 99.95th=[39060], | 99.99th=[39060] bw ( KiB/s): min= 696, max= 1016, per=26.37%, avg=824.00, stdev=169.33, samples=3 iops : min= 174, max= 254, avg=206.00, stdev=42.33, samples=3 lat (usec) : 4=1.17%, 10=15.36%, 20=8.72%, 50=2.47%, 100=2.08% lat (usec) : 250=17.58%, 500=1.56%, 750=2.34%, 1000=4.69% lat (msec) : 2=17.97%, 4=10.68%, 10=6.12%, 20=7.42%, 50=1.82% cpu : usr=0.30%, sys=7.62%, ctx=931, 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=2970KiB/s (3042kB/s), 712KiB/s-819KiB/s (729kB/s-839kB/s), io=5988KiB (6132kB), run=1909-2016msec WRITE: bw=3125KiB/s (3200kB/s), 790KiB/s-812KiB/s (809kB/s-831kB/s), io=6300KiB (6451kB), run=1909-2016msec rand-rw: (groupid=0, jobs=1): err= 0: pid=19580: Fri May 31 08:18:50 2024 read: IOPS=44, BW=179KiB/s (183kB/s)(1480KiB/8271msec) clat (usec): min=617, max=54716, avg=2313.62, stdev=4753.27 lat (usec): min=618, max=54718, avg=2314.29, stdev=4753.31 clat percentiles (usec): | 1.00th=[ 701], 5.00th=[ 783], 10.00th=[ 816], 20.00th=[ 865], | 30.00th=[ 922], 40.00th=[ 955], 50.00th=[ 1045], 60.00th=[ 1205], | 70.00th=[ 1401], 80.00th=[ 1696], 90.00th=[ 3228], 95.00th=[ 9896], | 99.00th=[25822], 99.50th=[33424], 99.90th=[54789], 99.95th=[54789], | 99.99th=[54789] bw ( KiB/s): min= 96, max= 280, per=24.65%, avg=175.50, stdev=50.97, samples=16 iops : min= 24, max= 70, avg=43.88, stdev=12.74, samples=16 write: IOPS=48, BW=192KiB/s (197kB/s)(1592KiB/8271msec) clat (usec): min=10290, max=56442, avg=18609.14, stdev=5956.34 lat (usec): min=10291, max=56443, avg=18609.94, stdev=5956.30 clat percentiles (usec): | 1.00th=[11076], 5.00th=[11731], 10.00th=[12256], 20.00th=[13435], | 30.00th=[14353], 40.00th=[16188], 50.00th=[18482], 60.00th=[19792], | 70.00th=[20841], 80.00th=[22152], 90.00th=[24249], 95.00th=[29230], | 99.00th=[41157], 99.50th=[49021], 99.90th=[56361], 99.95th=[56361], | 99.99th=[56361] bw ( KiB/s): min= 120, max= 232, per=25.57%, avg=191.50, stdev=37.35, samples=16 iops : min= 30, max= 58, avg=47.87, stdev= 9.34, samples=16 lat (usec) : 750=2.08%, 1000=19.79% lat (msec) : 2=19.66%, 4=2.60%, 10=1.69%, 20=33.07%, 50=20.83% lat (msec) : 100=0.26% cpu : usr=0.13%, sys=1.28%, ctx=834, 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=19581: Fri May 31 08:18:50 2024 read: IOPS=42, BW=171KiB/s (175kB/s)(1436KiB/8402msec) clat (usec): min=556, max=54656, avg=1926.04, stdev=3868.82 lat (usec): min=556, max=54657, avg=1926.70, stdev=3868.84 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 717], 10.00th=[ 758], 20.00th=[ 832], | 30.00th=[ 898], 40.00th=[ 963], 50.00th=[ 1074], 60.00th=[ 1205], | 70.00th=[ 1352], 80.00th=[ 1663], 90.00th=[ 2278], 95.00th=[ 5866], | 99.00th=[18220], 99.50th=[21890], 99.90th=[54789], 99.95th=[54789], | 99.99th=[54789] bw ( KiB/s): min= 80, max= 264, per=24.23%, avg=172.50, stdev=46.74, samples=16 iops : min= 20, max= 66, avg=43.12, stdev=11.68, samples=16 write: IOPS=48, BW=195KiB/s (199kB/s)(1636KiB/8402msec) clat (usec): min=10321, max=49695, avg=18831.31, stdev=5383.75 lat (usec): min=10322, max=49696, avg=18832.11, stdev=5383.77 clat percentiles (usec): | 1.00th=[10683], 5.00th=[11600], 10.00th=[12256], 20.00th=[13566], | 30.00th=[15139], 40.00th=[17695], 50.00th=[19268], 60.00th=[20317], | 70.00th=[21103], 80.00th=[22414], 90.00th=[24511], 95.00th=[26870], | 99.00th=[34341], 99.50th=[41681], 99.90th=[49546], 99.95th=[49546], | 99.99th=[49546] bw ( KiB/s): min= 144, max= 232, per=25.70%, avg=192.50, stdev=24.52, samples=16 iops : min= 36, max= 58, avg=48.12, stdev= 6.13, samples=16 lat (usec) : 750=3.65%, 1000=17.06% lat (msec) : 2=19.92%, 4=3.26%, 10=1.30%, 20=32.03%, 50=22.66% lat (msec) : 100=0.13% cpu : usr=0.07%, sys=1.29%, ctx=814, 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=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=19582: Fri May 31 08:18:50 2024 read: IOPS=47, BW=192KiB/s (196kB/s)(1564KiB/8167msec) clat (usec): min=590, max=33331, avg=1840.23, stdev=3389.44 lat (usec): min=591, max=33331, avg=1840.86, stdev=3389.45 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 709], 10.00th=[ 750], 20.00th=[ 816], | 30.00th=[ 873], 40.00th=[ 922], 50.00th=[ 988], 60.00th=[ 1123], | 70.00th=[ 1270], 80.00th=[ 1549], 90.00th=[ 1975], 95.00th=[ 6456], | 99.00th=[20579], 99.50th=[24511], 99.90th=[33424], 99.95th=[33424], | 99.99th=[33424] bw ( KiB/s): min= 96, max= 312, per=27.32%, avg=194.50, stdev=68.05, samples=16 iops : min= 24, max= 78, avg=48.63, stdev=17.01, samples=16 write: IOPS=46, BW=185KiB/s (189kB/s)(1508KiB/8167msec) clat (usec): min=10657, max=63367, avg=19731.13, stdev=6519.06 lat (usec): min=10658, max=63369, avg=19731.90, stdev=6519.06 clat percentiles (usec): | 1.00th=[11207], 5.00th=[12256], 10.00th=[12780], 20.00th=[14222], | 30.00th=[16319], 40.00th=[17957], 50.00th=[19530], 60.00th=[20579], | 70.00th=[21627], 80.00th=[23200], 90.00th=[25297], 95.00th=[31327], | 99.00th=[46924], 99.50th=[54789], 99.90th=[63177], 99.95th=[63177], | 99.99th=[63177] bw ( KiB/s): min= 128, max= 216, per=24.57%, avg=184.00, stdev=31.73, samples=16 iops : min= 32, max= 54, avg=46.00, stdev= 7.93, samples=16 lat (usec) : 750=5.08%, 1000=21.22% lat (msec) : 2=19.66%, 4=2.21%, 10=0.91%, 20=28.78%, 50=21.74% lat (msec) : 100=0.39% cpu : usr=0.07%, sys=1.31%, ctx=843, 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=19583: Fri May 31 08:18:50 2024 read: IOPS=45, BW=182KiB/s (186kB/s)(1508KiB/8297msec) clat (usec): min=619, max=36302, avg=1874.06, stdev=3375.07 lat (usec): min=620, max=36303, avg=1874.87, stdev=3375.02 clat percentiles (usec): | 1.00th=[ 635], 5.00th=[ 717], 10.00th=[ 766], 20.00th=[ 824], | 30.00th=[ 873], 40.00th=[ 955], 50.00th=[ 1037], 60.00th=[ 1221], | 70.00th=[ 1385], 80.00th=[ 1565], 90.00th=[ 2180], 95.00th=[ 6128], | 99.00th=[21103], 99.50th=[23200], 99.90th=[36439], 99.95th=[36439], | 99.99th=[36439] bw ( KiB/s): min= 80, max= 248, per=24.97%, avg=177.81, stdev=51.78, samples=16 iops : min= 20, max= 62, avg=44.31, stdev=13.00, samples=16 write: IOPS=47, BW=189KiB/s (193kB/s)(1564KiB/8297msec) clat (usec): min=10372, max=61002, avg=19389.99, stdev=6690.36 lat (usec): min=10373, max=61004, avg=19390.83, stdev=6690.45 clat percentiles (usec): | 1.00th=[11076], 5.00th=[11994], 10.00th=[12518], 20.00th=[13698], | 30.00th=[15401], 40.00th=[17171], 50.00th=[19006], 60.00th=[20317], | 70.00th=[21365], 80.00th=[22676], 90.00th=[24773], 95.00th=[30540], | 99.00th=[54264], 99.50th=[56886], 99.90th=[61080], 99.95th=[61080], | 99.99th=[61080] bw ( KiB/s): min= 120, max= 224, per=24.87%, avg=186.31, stdev=28.13, samples=16 iops : min= 30, max= 56, avg=46.44, stdev= 7.04, samples=16 lat (usec) : 750=4.17%, 1000=18.88% lat (msec) : 2=20.31%, 4=3.12%, 10=0.65%, 20=29.95%, 50=22.40% lat (msec) : 100=0.52% cpu : usr=0.11%, sys=1.23%, ctx=813, 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=713KiB/s (730kB/s), 171KiB/s-192KiB/s (175kB/s-196kB/s), io=5988KiB (6132kB), run=8167-8402msec WRITE: bw=750KiB/s (768kB/s), 185KiB/s-195KiB/s (189kB/s-199kB/s), io=6300KiB (6451kB), run=8167-8402msec