== sanity test 398b: DIO and buffer IO race ============== 07:06:51 (1747825611) /usr/bin/fio 12+0 records in 12+0 records out 12582912 bytes (13 MB) copied, 0.05856 s, 215 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=4126: Wed May 21 07:06:54 2025 read: IOPS=185, BW=740KiB/s (758kB/s)(1480KiB/1999msec) clat (usec): min=3, max=24266, avg=1435.54, stdev=2825.81 lat (usec): min=3, max=24266, avg=1436.20, stdev=2825.84 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 18], 50.00th=[ 32], 60.00th=[ 1139], | 70.00th=[ 1762], 80.00th=[ 2311], 90.00th=[ 3195], 95.00th=[ 4359], | 99.00th=[16909], 99.50th=[19268], 99.90th=[24249], 99.95th=[24249], | 99.99th=[24249] bw ( KiB/s): min= 622, max= 736, per=22.67%, avg=663.33, stdev=63.13, samples=3 iops : min= 155, max= 184, avg=165.67, stdev=15.95, samples=3 write: IOPS=199, BW=796KiB/s (816kB/s)(1592KiB/1999msec) clat (usec): min=85, max=32557, avg=3670.26, stdev=5189.39 lat (usec): min=86, max=32558, avg=3671.12, stdev=5189.32 clat percentiles (usec): | 1.00th=[ 97], 5.00th=[ 118], 10.00th=[ 135], 20.00th=[ 169], | 30.00th=[ 249], 40.00th=[ 963], 50.00th=[ 1450], 60.00th=[ 2180], | 70.00th=[ 3785], 80.00th=[ 6718], 90.00th=[10683], 95.00th=[14091], | 99.00th=[24773], 99.50th=[29754], 99.90th=[32637], 99.95th=[32637], | 99.99th=[32637] bw ( KiB/s): min= 630, max= 816, per=23.97%, avg=738.00, stdev=96.56, samples=3 iops : min= 157, max= 204, avg=184.33, stdev=24.42, samples=3 lat (usec) : 4=0.13%, 10=8.98%, 20=11.59%, 50=4.82%, 100=1.17% lat (usec) : 250=15.49%, 500=1.95%, 750=1.04%, 1000=4.04% lat (msec) : 2=16.28%, 4=16.28%, 10=11.07%, 20=5.99%, 50=1.17% cpu : usr=0.05%, sys=8.86%, ctx=979, 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=4127: Wed May 21 07:06:54 2025 read: IOPS=175, BW=702KiB/s (719kB/s)(1436KiB/2046msec) clat (usec): min=3, max=32990, avg=1355.83, stdev=2795.71 lat (usec): min=3, max=32990, avg=1356.44, stdev=2795.72 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 23], 50.00th=[ 77], 60.00th=[ 1270], | 70.00th=[ 1713], 80.00th=[ 2212], 90.00th=[ 3261], 95.00th=[ 4424], | 99.00th=[16188], 99.50th=[21365], 99.90th=[32900], 99.95th=[32900], | 99.99th=[32900] bw ( KiB/s): min= 520, max= 824, per=23.58%, avg=690.00, stdev=126.89, samples=4 iops : min= 130, max= 206, avg=172.50, stdev=31.72, samples=4 write: IOPS=199, BW=800KiB/s (819kB/s)(1636KiB/2046msec) clat (usec): min=95, max=34225, avg=3796.85, stdev=5428.24 lat (usec): min=96, max=34228, avg=3797.61, stdev=5428.26 clat percentiles (usec): | 1.00th=[ 106], 5.00th=[ 118], 10.00th=[ 139], 20.00th=[ 169], | 30.00th=[ 355], 40.00th=[ 1020], 50.00th=[ 1631], 60.00th=[ 2376], | 70.00th=[ 3720], 80.00th=[ 6587], 90.00th=[10421], 95.00th=[14877], | 99.00th=[26084], 99.50th=[30278], 99.90th=[34341], 99.95th=[34341], | 99.99th=[34341] bw ( KiB/s): min= 592, max= 944, per=25.20%, avg=776.00, stdev=170.58, samples=4 iops : min= 148, max= 236, avg=194.00, stdev=42.65, samples=4 lat (usec) : 4=0.39%, 10=8.07%, 20=8.72%, 50=5.47%, 100=1.43% lat (usec) : 250=15.62%, 500=1.69%, 750=0.52%, 1000=4.69% lat (msec) : 2=19.27%, 4=16.41%, 10=11.33%, 20=4.82%, 50=1.56% cpu : usr=0.24%, sys=8.65%, ctx=943, 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=4128: Wed May 21 07:06:54 2025 read: IOPS=200, BW=802KiB/s (822kB/s)(1564KiB/1949msec) clat (usec): min=3, max=36253, avg=1441.01, stdev=2868.96 lat (usec): min=3, max=36254, avg=1441.67, stdev=2868.94 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 17], 40.00th=[ 29], 50.00th=[ 881], 60.00th=[ 1631], | 70.00th=[ 1975], 80.00th=[ 2343], 90.00th=[ 3064], 95.00th=[ 3982], | 99.00th=[19268], 99.50th=[22414], 99.90th=[36439], 99.95th=[36439], | 99.99th=[36439] bw ( KiB/s): min= 616, max= 864, per=25.97%, avg=760.00, stdev=128.75, samples=3 iops : min= 154, max= 216, avg=190.00, stdev=32.19, samples=3 write: IOPS=193, BW=774KiB/s (792kB/s)(1508KiB/1949msec) clat (usec): min=92, max=34676, avg=3654.83, stdev=5014.41 lat (usec): min=92, max=34693, avg=3655.71, stdev=5014.73 clat percentiles (usec): | 1.00th=[ 101], 5.00th=[ 115], 10.00th=[ 135], 20.00th=[ 163], | 30.00th=[ 215], 40.00th=[ 938], 50.00th=[ 1319], 60.00th=[ 2114], | 70.00th=[ 3785], 80.00th=[ 7308], 90.00th=[10814], 95.00th=[14353], | 99.00th=[19268], 99.50th=[30802], 99.90th=[34866], 99.95th=[34866], | 99.99th=[34866] bw ( KiB/s): min= 704, max= 768, per=23.90%, avg=736.00, stdev=32.00, samples=3 iops : min= 176, max= 192, avg=184.00, stdev= 8.00, samples=3 lat (usec) : 4=0.52%, 10=8.33%, 20=7.81%, 50=6.38%, 100=0.91% lat (usec) : 250=15.76%, 500=1.17%, 750=1.69%, 1000=5.08% lat (msec) : 2=17.19%, 4=18.49%, 10=10.42%, 20=5.60%, 50=0.65% cpu : usr=0.31%, sys=8.78%, ctx=974, 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=4129: Wed May 21 07:06:54 2025 read: IOPS=188, BW=754KiB/s (772kB/s)(1508KiB/2001msec) clat (usec): min=4, max=20098, avg=1440.21, stdev=2490.28 lat (usec): min=4, max=20099, avg=1440.86, stdev=2490.30 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 21], 50.00th=[ 498], 60.00th=[ 1614], | 70.00th=[ 2024], 80.00th=[ 2474], 90.00th=[ 3163], 95.00th=[ 3654], | 99.00th=[17695], 99.50th=[19268], 99.90th=[20055], 99.95th=[20055], | 99.99th=[20055] bw ( KiB/s): min= 576, max= 792, per=23.22%, avg=679.33, stdev=108.30, samples=3 iops : min= 144, max= 198, avg=169.67, stdev=27.10, samples=3 write: IOPS=195, BW=782KiB/s (800kB/s)(1564KiB/2001msec) clat (usec): min=91, max=38445, avg=3711.23, stdev=5421.65 lat (usec): min=92, max=38446, avg=3712.24, stdev=5421.50 clat percentiles (usec): | 1.00th=[ 109], 5.00th=[ 126], 10.00th=[ 147], 20.00th=[ 176], | 30.00th=[ 302], 40.00th=[ 922], 50.00th=[ 1369], 60.00th=[ 2245], | 70.00th=[ 3687], 80.00th=[ 6587], 90.00th=[10290], 95.00th=[15533], | 99.00th=[25297], 99.50th=[31851], 99.90th=[38536], 99.95th=[38536], | 99.99th=[38536] bw ( KiB/s): min= 664, max= 768, per=22.76%, avg=700.67, stdev=58.39, samples=3 iops : min= 166, max= 192, avg=175.00, stdev=14.73, samples=3 lat (usec) : 10=7.94%, 20=11.46%, 50=4.17%, 100=0.52%, 250=14.84% lat (usec) : 500=2.08%, 750=1.56%, 1000=4.69% lat (msec) : 2=16.67%, 4=19.92%, 10=10.03%, 20=4.82%, 50=1.30% cpu : usr=0.30%, sys=9.25%, ctx=1009, 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=2927KiB/s (2997kB/s), 702KiB/s-802KiB/s (719kB/s-822kB/s), io=5988KiB (6132kB), run=1949-2046msec WRITE: bw=3079KiB/s (3153kB/s), 774KiB/s-800KiB/s (792kB/s-819kB/s), io=6300KiB (6451kB), run=1949-2046msec rand-rw: (groupid=0, jobs=1): err= 0: pid=4122: Wed May 21 07:06:58 2025 read: IOPS=57, BW=231KiB/s (236kB/s)(1480KiB/6418msec) clat (usec): min=657, max=23260, avg=1956.74, stdev=2831.54 lat (usec): min=658, max=23260, avg=1957.70, stdev=2831.55 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 783], 10.00th=[ 807], 20.00th=[ 873], | 30.00th=[ 930], 40.00th=[ 996], 50.00th=[ 1090], 60.00th=[ 1205], | 70.00th=[ 1369], 80.00th=[ 1795], 90.00th=[ 3097], 95.00th=[ 7177], | 99.00th=[16319], 99.50th=[21627], 99.90th=[23200], 99.95th=[23200], | 99.99th=[23200] bw ( KiB/s): min= 136, max= 344, per=24.94%, avg=227.17, stdev=61.70, samples=12 iops : min= 34, max= 86, avg=56.67, stdev=15.27, samples=12 write: IOPS=62, BW=248KiB/s (254kB/s)(1592KiB/6418msec) clat (usec): min=7249, max=42252, avg=14279.43, stdev=5211.79 lat (usec): min=7249, max=42253, avg=14280.38, stdev=5211.76 clat percentiles (usec): | 1.00th=[ 7701], 5.00th=[ 8160], 10.00th=[ 8717], 20.00th=[ 9634], | 30.00th=[10814], 40.00th=[12518], 50.00th=[13960], 60.00th=[15008], | 70.00th=[16057], 80.00th=[17171], 90.00th=[20317], 95.00th=[23725], | 99.00th=[33424], 99.50th=[39060], 99.90th=[42206], 99.95th=[42206], | 99.99th=[42206] bw ( KiB/s): min= 168, max= 312, per=25.73%, avg=246.50, stdev=53.47, samples=12 iops : min= 42, max= 78, avg=61.50, stdev=13.36, samples=12 lat (usec) : 750=1.30%, 1000=18.23% lat (msec) : 2=20.31%, 4=4.43%, 10=14.06%, 20=35.81%, 50=5.86% cpu : usr=0.08%, sys=1.90%, ctx=823, 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=4123: Wed May 21 07:06:58 2025 read: IOPS=54, BW=219KiB/s (224kB/s)(1436KiB/6571msec) clat (usec): min=691, max=23679, avg=1820.44, stdev=2722.12 lat (usec): min=692, max=23679, avg=1821.20, stdev=2722.12 clat percentiles (usec): | 1.00th=[ 709], 5.00th=[ 783], 10.00th=[ 832], 20.00th=[ 889], | 30.00th=[ 955], 40.00th=[ 1004], 50.00th=[ 1074], 60.00th=[ 1172], | 70.00th=[ 1319], 80.00th=[ 1745], 90.00th=[ 2474], 95.00th=[ 5997], | 99.00th=[16057], 99.50th=[21103], 99.90th=[23725], 99.95th=[23725], | 99.99th=[23725] bw ( KiB/s): min= 112, max= 328, per=23.83%, avg=217.08, stdev=55.69, samples=13 iops : min= 28, max= 82, avg=54.15, stdev=13.92, samples=13 write: IOPS=62, BW=249KiB/s (255kB/s)(1636KiB/6571msec) clat (usec): min=7151, max=40304, avg=14436.17, stdev=4908.41 lat (usec): min=7152, max=40305, avg=14437.10, stdev=4908.43 clat percentiles (usec): | 1.00th=[ 7898], 5.00th=[ 8455], 10.00th=[ 9110], 20.00th=[10290], | 30.00th=[11600], 40.00th=[13042], 50.00th=[14222], 60.00th=[15139], | 70.00th=[15795], 80.00th=[17171], 90.00th=[19268], 95.00th=[22676], | 99.00th=[33424], 99.50th=[37487], 99.90th=[40109], 99.95th=[40109], | 99.99th=[40109] bw ( KiB/s): min= 168, max= 288, per=25.81%, avg=247.23, stdev=44.04, samples=13 iops : min= 42, max= 72, avg=61.69, stdev=10.96, samples=13 lat (usec) : 750=1.69%, 1000=16.54% lat (msec) : 2=21.09%, 4=4.82%, 10=10.68%, 20=40.76%, 50=4.43% cpu : usr=0.14%, sys=1.84%, ctx=817, 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=4124: Wed May 21 07:06:58 2025 read: IOPS=62, BW=248KiB/s (254kB/s)(1564KiB/6301msec) clat (usec): min=697, max=24961, avg=1841.26, stdev=2769.48 lat (usec): min=697, max=24962, avg=1842.08, stdev=2769.49 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 783], 10.00th=[ 824], 20.00th=[ 873], | 30.00th=[ 922], 40.00th=[ 979], 50.00th=[ 1057], 60.00th=[ 1172], | 70.00th=[ 1319], 80.00th=[ 1614], 90.00th=[ 2376], 95.00th=[ 7308], | 99.00th=[16712], 99.50th=[21890], 99.90th=[25035], 99.95th=[25035], | 99.99th=[25035] bw ( KiB/s): min= 120, max= 399, per=27.79%, avg=253.17, stdev=91.83, samples=12 iops : min= 30, max= 99, avg=63.17, stdev=22.83, samples=12 write: IOPS=59, BW=239KiB/s (245kB/s)(1508KiB/6301msec) clat (usec): min=6721, max=50439, avg=14776.35, stdev=5724.01 lat (usec): min=6722, max=50440, avg=14777.36, stdev=5724.22 clat percentiles (usec): | 1.00th=[ 7832], 5.00th=[ 8356], 10.00th=[ 8979], 20.00th=[10159], | 30.00th=[11600], 40.00th=[12911], 50.00th=[14091], 60.00th=[14746], | 70.00th=[15926], 80.00th=[17171], 90.00th=[20841], 95.00th=[27132], | 99.00th=[34866], 99.50th=[39060], 99.90th=[50594], 99.95th=[50594], | 99.99th=[50594] bw ( KiB/s): min= 160, max= 288, per=24.97%, avg=239.17, stdev=49.29, samples=12 iops : min= 40, max= 72, avg=59.67, stdev=12.27, samples=12 lat (usec) : 750=1.17%, 1000=21.61% lat (msec) : 2=20.83%, 4=3.78%, 10=11.59%, 20=35.03%, 50=5.86% lat (msec) : 100=0.13% cpu : usr=0.14%, sys=1.86%, ctx=827, 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=4125: Wed May 21 07:06:58 2025 read: IOPS=57, BW=232KiB/s (237kB/s)(1508KiB/6508msec) clat (usec): min=725, max=28640, avg=2094.15, stdev=3359.59 lat (usec): min=726, max=28641, avg=2094.94, stdev=3359.62 clat percentiles (usec): | 1.00th=[ 750], 5.00th=[ 791], 10.00th=[ 824], 20.00th=[ 865], | 30.00th=[ 922], 40.00th=[ 979], 50.00th=[ 1045], 60.00th=[ 1188], | 70.00th=[ 1336], 80.00th=[ 1762], 90.00th=[ 3294], 95.00th=[ 9241], | 99.00th=[19006], 99.50th=[27132], 99.90th=[28705], 99.95th=[28705], | 99.99th=[28705] bw ( KiB/s): min= 144, max= 344, per=25.18%, avg=229.38, stdev=60.11, samples=13 iops : min= 36, max= 86, avg=57.23, stdev=15.05, samples=13 write: IOPS=60, BW=240KiB/s (246kB/s)(1564KiB/6508msec) clat (usec): min=7809, max=46636, avg=14595.33, stdev=5367.29 lat (usec): min=7810, max=46637, avg=14596.21, stdev=5367.32 clat percentiles (usec): | 1.00th=[ 7898], 5.00th=[ 8586], 10.00th=[ 9110], 20.00th=[10028], | 30.00th=[11863], 40.00th=[13173], 50.00th=[14222], 60.00th=[15008], | 70.00th=[15926], 80.00th=[16909], 90.00th=[19530], 95.00th=[23987], | 99.00th=[39584], 99.50th=[42206], 99.90th=[46400], 99.95th=[46400], | 99.99th=[46400] bw ( KiB/s): min= 160, max= 288, per=25.04%, avg=239.85, stdev=46.76, samples=13 iops : min= 40, max= 72, avg=59.85, stdev=11.70, samples=13 lat (usec) : 750=0.65%, 1000=20.70% lat (msec) : 2=19.66%, 4=3.52%, 10=12.63%, 20=38.02%, 50=4.82% cpu : usr=0.15%, sys=1.83%, ctx=845, 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=911KiB/s (933kB/s), 219KiB/s-248KiB/s (224kB/s-254kB/s), io=5988KiB (6132kB), run=6301-6571msec WRITE: bw=959KiB/s (982kB/s), 239KiB/s-249KiB/s (245kB/s-255kB/s), io=6300KiB (6451kB), run=6301-6571msec