== sanity test 398b: DIO and buffer IO race ============== 10:00:10 (1747404010) /usr/bin/fio 12+0 records in 12+0 records out 12582912 bytes (13 MB) copied, 0.0631455 s, 199 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=23212: Fri May 16 10:00:14 2025 read: IOPS=215, BW=863KiB/s (884kB/s)(1480KiB/1714msec) clat (usec): min=3, max=25303, avg=1158.78, stdev=2388.72 lat (usec): min=3, max=25303, avg=1159.41, stdev=2388.69 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 19], 50.00th=[ 30], 60.00th=[ 955], | 70.00th=[ 1516], 80.00th=[ 2147], 90.00th=[ 2704], 95.00th=[ 3458], | 99.00th=[14484], 99.50th=[17957], 99.90th=[25297], 99.95th=[25297], | 99.99th=[25297] bw ( KiB/s): min= 792, max= 912, per=25.16%, avg=840.00, stdev=63.50, samples=3 iops : min= 198, max= 228, avg=210.00, stdev=15.87, samples=3 write: IOPS=232, BW=929KiB/s (951kB/s)(1592KiB/1714msec) clat (usec): min=91, max=23279, avg=3209.32, stdev=4268.75 lat (usec): min=91, max=23280, avg=3210.32, stdev=4268.67 clat percentiles (usec): | 1.00th=[ 98], 5.00th=[ 114], 10.00th=[ 129], 20.00th=[ 165], | 30.00th=[ 227], 40.00th=[ 906], 50.00th=[ 1254], 60.00th=[ 2024], | 70.00th=[ 3195], 80.00th=[ 6718], 90.00th=[ 9372], 95.00th=[12518], | 99.00th=[19530], 99.50th=[21365], 99.90th=[23200], 99.95th=[23200], | 99.99th=[23200] bw ( KiB/s): min= 816, max= 1016, per=26.04%, avg=914.67, stdev=100.03, samples=3 iops : min= 204, max= 254, avg=228.67, stdev=25.01, samples=3 lat (usec) : 4=0.39%, 10=10.55%, 20=8.72%, 50=5.60%, 100=2.47% lat (usec) : 250=15.10%, 500=1.43%, 750=2.34%, 1000=4.95% lat (msec) : 2=17.32%, 4=15.49%, 10=10.42%, 20=4.69%, 50=0.52% cpu : usr=0.53%, sys=9.05%, ctx=959, 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=23213: Fri May 16 10:00:14 2025 read: IOPS=200, BW=801KiB/s (820kB/s)(1436KiB/1793msec) clat (usec): min=3, max=13329, avg=1073.10, stdev=1634.07 lat (usec): min=3, max=13330, avg=1073.67, stdev=1634.09 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 32], 60.00th=[ 1205], | 70.00th=[ 1631], 80.00th=[ 2008], 90.00th=[ 2769], 95.00th=[ 3294], | 99.00th=[ 9634], 99.50th=[11338], 99.90th=[13304], 99.95th=[13304], | 99.99th=[13304] bw ( KiB/s): min= 448, max= 1096, per=23.16%, avg=773.33, stdev=324.01, samples=3 iops : min= 112, max= 274, avg=193.33, stdev=81.00, samples=3 write: IOPS=228, BW=912KiB/s (934kB/s)(1636KiB/1793msec) clat (usec): min=91, max=32642, avg=3423.70, stdev=4838.29 lat (usec): min=91, max=32642, avg=3424.52, stdev=4838.25 clat percentiles (usec): | 1.00th=[ 101], 5.00th=[ 115], 10.00th=[ 133], 20.00th=[ 174], | 30.00th=[ 367], 40.00th=[ 955], 50.00th=[ 1401], 60.00th=[ 2073], | 70.00th=[ 3294], 80.00th=[ 6652], 90.00th=[ 9503], 95.00th=[13698], | 99.00th=[19530], 99.50th=[25297], 99.90th=[32637], 99.95th=[32637], | 99.99th=[32637] bw ( KiB/s): min= 528, max= 992, per=23.68%, avg=832.00, stdev=263.39, samples=3 iops : min= 132, max= 248, avg=208.00, stdev=65.85, samples=3 lat (usec) : 4=0.78%, 10=10.81%, 20=8.33%, 50=4.30%, 100=0.65% lat (usec) : 250=14.32%, 500=2.08%, 750=2.99%, 1000=4.30% lat (msec) : 2=20.31%, 4=14.84%, 10=11.33%, 20=4.43%, 50=0.52% cpu : usr=0.22%, sys=8.65%, ctx=1004, 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=23214: Fri May 16 10:00:14 2025 read: IOPS=223, BW=896KiB/s (917kB/s)(1564KiB/1746msec) clat (usec): min=3, max=14335, avg=1148.14, stdev=1647.40 lat (usec): min=3, max=14335, avg=1148.79, stdev=1647.38 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 23], 50.00th=[ 174], 60.00th=[ 1369], | 70.00th=[ 1778], 80.00th=[ 2147], 90.00th=[ 2704], 95.00th=[ 3523], | 99.00th=[ 7767], 99.50th=[12649], 99.90th=[14353], 99.95th=[14353], | 99.99th=[14353] bw ( KiB/s): min= 776, max= 880, per=25.24%, avg=842.67, stdev=57.87, samples=3 iops : min= 194, max= 220, avg=210.67, stdev=14.47, samples=3 write: IOPS=215, BW=864KiB/s (884kB/s)(1508KiB/1746msec) clat (usec): min=90, max=21308, avg=3421.15, stdev=4316.51 lat (usec): min=91, max=21309, avg=3421.86, stdev=4316.52 clat percentiles (usec): | 1.00th=[ 97], 5.00th=[ 110], 10.00th=[ 133], 20.00th=[ 167], | 30.00th=[ 314], 40.00th=[ 996], 50.00th=[ 1450], 60.00th=[ 2343], | 70.00th=[ 3982], 80.00th=[ 6587], 90.00th=[ 9372], 95.00th=[13173], | 99.00th=[18744], 99.50th=[20579], 99.90th=[21365], 99.95th=[21365], | 99.99th=[21365] bw ( KiB/s): min= 760, max= 912, per=23.91%, avg=840.00, stdev=76.32, samples=3 iops : min= 190, max= 228, avg=210.00, stdev=19.08, samples=3 lat (usec) : 4=0.65%, 10=8.46%, 20=9.77%, 50=5.60%, 100=1.43% lat (usec) : 250=14.19%, 500=1.17%, 750=1.56%, 1000=4.56% lat (msec) : 2=19.14%, 4=17.19%, 10=11.59%, 20=4.43%, 50=0.26% cpu : usr=0.00%, sys=9.40%, ctx=1023, 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=23215: Fri May 16 10:00:14 2025 read: IOPS=220, BW=883KiB/s (904kB/s)(1508KiB/1708msec) clat (usec): min=3, max=28026, avg=1201.87, stdev=2546.45 lat (usec): min=4, max=28026, avg=1203.03, stdev=2548.22 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 21], 50.00th=[ 41], 60.00th=[ 1303], | 70.00th=[ 1745], 80.00th=[ 2057], 90.00th=[ 2671], 95.00th=[ 3228], | 99.00th=[10421], 99.50th=[27132], 99.90th=[27919], 99.95th=[27919], | 99.99th=[27919] bw ( KiB/s): min= 816, max= 904, per=25.96%, avg=866.67, stdev=45.49, samples=3 iops : min= 204, max= 226, avg=216.67, stdev=11.37, samples=3 write: IOPS=228, BW=916KiB/s (938kB/s)(1564KiB/1708msec) clat (usec): min=97, max=23911, avg=3191.21, stdev=4354.09 lat (usec): min=98, max=23912, avg=3192.51, stdev=4354.28 clat percentiles (usec): | 1.00th=[ 104], 5.00th=[ 122], 10.00th=[ 133], 20.00th=[ 169], | 30.00th=[ 289], 40.00th=[ 898], 50.00th=[ 1500], 60.00th=[ 2147], | 70.00th=[ 3261], 80.00th=[ 5735], 90.00th=[ 8979], 95.00th=[13042], | 99.00th=[21103], 99.50th=[23725], 99.90th=[23987], 99.95th=[23987], | 99.99th=[23987] bw ( KiB/s): min= 800, max= 960, per=25.58%, avg=898.67, stdev=86.29, samples=3 iops : min= 200, max= 240, avg=224.67, stdev=21.57, samples=3 lat (usec) : 4=0.26%, 10=8.98%, 20=10.29%, 50=5.21%, 100=1.04% lat (usec) : 250=14.32%, 500=1.95%, 750=2.47%, 1000=4.69% lat (msec) : 2=19.14%, 4=16.93%, 10=10.29%, 20=3.39%, 50=1.04% cpu : usr=0.12%, sys=10.25%, ctx=993, 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=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=3340KiB/s (3420kB/s), 801KiB/s-896KiB/s (820kB/s-917kB/s), io=5988KiB (6132kB), run=1708-1793msec WRITE: bw=3514KiB/s (3598kB/s), 864KiB/s-929KiB/s (884kB/s-951kB/s), io=6300KiB (6451kB), run=1708-1793msec rand-rw: (groupid=0, jobs=1): err= 0: pid=23208: Fri May 16 10:00:18 2025 read: IOPS=56, BW=226KiB/s (231kB/s)(1480KiB/6553msec) clat (usec): min=631, max=31193, avg=2019.22, stdev=3438.63 lat (usec): min=632, max=31194, avg=2019.91, stdev=3438.64 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 725], 10.00th=[ 775], 20.00th=[ 816], | 30.00th=[ 865], 40.00th=[ 906], 50.00th=[ 963], 60.00th=[ 1090], | 70.00th=[ 1270], 80.00th=[ 1663], 90.00th=[ 2900], 95.00th=[ 8848], | 99.00th=[17433], 99.50th=[29230], 99.90th=[31065], 99.95th=[31065], | 99.99th=[31065] bw ( KiB/s): min= 136, max= 328, per=24.84%, avg=223.85, stdev=61.76, samples=13 iops : min= 34, max= 82, avg=55.85, stdev=15.42, samples=13 write: IOPS=60, BW=243KiB/s (249kB/s)(1592KiB/6553msec) clat (usec): min=7436, max=39276, avg=14557.34, stdev=4965.13 lat (usec): min=7437, max=39277, avg=14558.17, stdev=4965.16 clat percentiles (usec): | 1.00th=[ 7832], 5.00th=[ 8291], 10.00th=[ 8979], 20.00th=[ 9765], | 30.00th=[11338], 40.00th=[13304], 50.00th=[14615], 60.00th=[15664], | 70.00th=[16581], 80.00th=[17433], 90.00th=[19268], 95.00th=[21627], | 99.00th=[33424], 99.50th=[38536], 99.90th=[39060], 99.95th=[39060], | 99.99th=[39060] bw ( KiB/s): min= 152, max= 295, per=25.49%, avg=241.69, stdev=43.88, samples=13 iops : min= 38, max= 73, avg=60.31, stdev=10.91, samples=13 lat (usec) : 750=3.78%, 1000=21.48% lat (msec) : 2=15.36%, 4=3.52%, 10=13.28%, 20=38.41%, 50=4.17% cpu : usr=0.12%, sys=1.66%, ctx=810, 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=23209: Fri May 16 10:00:18 2025 read: IOPS=54, BW=216KiB/s (221kB/s)(1436KiB/6642msec) clat (usec): min=632, max=21667, avg=1900.16, stdev=2739.30 lat (usec): min=633, max=21667, avg=1900.89, stdev=2739.29 clat percentiles (usec): | 1.00th=[ 676], 5.00th=[ 717], 10.00th=[ 766], 20.00th=[ 816], | 30.00th=[ 881], 40.00th=[ 947], 50.00th=[ 1057], 60.00th=[ 1156], | 70.00th=[ 1287], 80.00th=[ 1762], 90.00th=[ 3392], 95.00th=[ 7832], | 99.00th=[16057], 99.50th=[19530], 99.90th=[21627], 99.95th=[21627], | 99.99th=[21627] bw ( KiB/s): min= 112, max= 304, per=23.89%, avg=215.23, stdev=50.13, samples=13 iops : min= 28, max= 76, avg=53.69, stdev=12.55, samples=13 write: IOPS=61, BW=246KiB/s (252kB/s)(1636KiB/6642msec) clat (usec): min=6734, max=34892, avg=14549.06, stdev=4703.75 lat (usec): min=6735, max=34893, avg=14550.00, stdev=4703.76 clat percentiles (usec): | 1.00th=[ 7504], 5.00th=[ 8291], 10.00th=[ 8979], 20.00th=[10028], | 30.00th=[11469], 40.00th=[13435], 50.00th=[14746], 60.00th=[15533], | 70.00th=[16319], 80.00th=[17433], 90.00th=[19268], 95.00th=[22676], | 99.00th=[30016], 99.50th=[34341], 99.90th=[34866], 99.95th=[34866], | 99.99th=[34866] bw ( KiB/s): min= 184, max= 280, per=25.56%, avg=242.31, stdev=31.51, samples=13 iops : min= 46, max= 70, avg=60.46, stdev= 7.85, samples=13 lat (usec) : 750=3.91%, 1000=17.32% lat (msec) : 2=17.58%, 4=3.91%, 10=12.89%, 20=40.10%, 50=4.30% cpu : usr=0.15%, sys=1.63%, ctx=830, 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=23210: Fri May 16 10:00:18 2025 read: IOPS=61, BW=246KiB/s (252kB/s)(1564KiB/6348msec) clat (usec): min=613, max=21387, avg=1764.81, stdev=2609.40 lat (usec): min=613, max=21388, avg=1765.55, stdev=2609.42 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 725], 10.00th=[ 750], 20.00th=[ 816], | 30.00th=[ 865], 40.00th=[ 906], 50.00th=[ 1004], 60.00th=[ 1123], | 70.00th=[ 1254], 80.00th=[ 1647], 90.00th=[ 2409], 95.00th=[ 7046], | 99.00th=[16057], 99.50th=[18482], 99.90th=[21365], 99.95th=[21365], | 99.99th=[21365] bw ( KiB/s): min= 144, max= 408, per=27.75%, avg=250.00, stdev=76.36, samples=12 iops : min= 36, max= 102, avg=62.50, stdev=19.09, samples=12 write: IOPS=59, BW=238KiB/s (243kB/s)(1508KiB/6348msec) clat (usec): min=7169, max=36159, avg=14976.86, stdev=4802.75 lat (usec): min=7169, max=36160, avg=14977.76, stdev=4802.77 clat percentiles (usec): | 1.00th=[ 7439], 5.00th=[ 8717], 10.00th=[ 9372], 20.00th=[10552], | 30.00th=[11731], 40.00th=[13566], 50.00th=[14746], 60.00th=[15664], | 70.00th=[16909], 80.00th=[17957], 90.00th=[20841], 95.00th=[25297], | 99.00th=[28443], 99.50th=[33424], 99.90th=[35914], 99.95th=[35914], | 99.99th=[35914] bw ( KiB/s): min= 176, max= 272, per=24.75%, avg=234.67, stdev=33.48, samples=12 iops : min= 44, max= 68, avg=58.67, stdev= 8.37, samples=12 lat (usec) : 750=4.95%, 1000=20.44% lat (msec) : 2=18.23%, 4=3.78%, 10=9.24%, 20=37.63%, 50=5.73% cpu : usr=0.09%, sys=1.80%, ctx=825, 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=23211: Fri May 16 10:00:18 2025 read: IOPS=58, BW=234KiB/s (240kB/s)(1508KiB/6442msec) clat (usec): min=662, max=26392, avg=1733.61, stdev=2776.20 lat (usec): min=663, max=26394, avg=1734.35, stdev=2776.36 clat percentiles (usec): | 1.00th=[ 709], 5.00th=[ 742], 10.00th=[ 775], 20.00th=[ 824], | 30.00th=[ 865], 40.00th=[ 914], 50.00th=[ 1004], 60.00th=[ 1139], | 70.00th=[ 1237], 80.00th=[ 1549], 90.00th=[ 2474], 95.00th=[ 6325], | 99.00th=[18482], 99.50th=[26346], 99.90th=[26346], 99.95th=[26346], | 99.99th=[26346] bw ( KiB/s): min= 144, max= 320, per=25.21%, avg=227.17, stdev=57.06, samples=12 iops : min= 36, max= 80, avg=56.67, stdev=14.30, samples=12 write: IOPS=60, BW=243KiB/s (249kB/s)(1564KiB/6442msec) clat (usec): min=6924, max=43213, avg=14779.15, stdev=5214.66 lat (usec): min=6925, max=43215, avg=14779.99, stdev=5214.68 clat percentiles (usec): | 1.00th=[ 7504], 5.00th=[ 8586], 10.00th=[ 8979], 20.00th=[10028], | 30.00th=[11076], 40.00th=[13435], 50.00th=[14877], 60.00th=[15926], | 70.00th=[16909], 80.00th=[17695], 90.00th=[19268], 95.00th=[22938], | 99.00th=[38011], 99.50th=[40633], 99.90th=[43254], 99.95th=[43254], | 99.99th=[43254] bw ( KiB/s): min= 160, max= 304, per=25.16%, avg=238.50, stdev=44.17, samples=12 iops : min= 40, max= 76, avg=59.50, stdev=11.13, samples=12 lat (usec) : 750=3.26%, 1000=21.22% lat (msec) : 2=17.71%, 4=4.17%, 10=11.98%, 20=36.98%, 50=4.69% cpu : usr=0.06%, sys=1.75%, 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=902KiB/s (923kB/s), 216KiB/s-246KiB/s (221kB/s-252kB/s), io=5988KiB (6132kB), run=6348-6642msec WRITE: bw=949KiB/s (971kB/s), 238KiB/s-246KiB/s (243kB/s-252kB/s), io=6300KiB (6451kB), run=6348-6642msec