== sanity test 398b: DIO and buffer IO race ============== 11:24:01 (1761319441) /usr/bin/fio 12+0 records in 12+0 records out 12582912 bytes (13 MB, 12 MiB) copied, 0.144423 s, 87.1 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-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=148182: Fri Oct 24 11:24:13 2025 read: IOPS=73, BW=293KiB/s (300kB/s)(1480KiB/5055msec) clat (usec): min=7, max=78258, avg=7813.94, stdev=8572.93 lat (usec): min=8, max=78258, avg=7814.60, stdev=8572.94 clat percentiles (usec): | 1.00th=[ 10], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 32], | 30.00th=[ 611], 40.00th=[ 5211], 50.00th=[ 6915], 60.00th=[ 8455], | 70.00th=[10028], 80.00th=[12256], 90.00th=[15401], 95.00th=[22938], | 99.00th=[40109], 99.50th=[53740], 99.90th=[78119], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 238, max= 343, per=23.94%, avg=283.44, stdev=38.81, samples=9 iops : min= 59, max= 85, avg=70.44, stdev= 9.67, samples=9 write: IOPS=78, BW=315KiB/s (322kB/s)(1592KiB/5055msec); 0 zone resets clat (usec): min=157, max=67032, avg=5388.76, stdev=6909.62 lat (usec): min=157, max=67033, avg=5389.60, stdev=6909.62 clat percentiles (usec): | 1.00th=[ 192], 5.00th=[ 219], 10.00th=[ 260], 20.00th=[ 359], | 30.00th=[ 474], 40.00th=[ 1516], 50.00th=[ 3294], 60.00th=[ 4490], | 70.00th=[ 6652], 80.00th=[ 9241], 90.00th=[14353], 95.00th=[18744], | 99.00th=[32113], 99.50th=[35914], 99.90th=[66847], 99.95th=[66847], | 99.99th=[66847] bw ( KiB/s): min= 223, max= 407, per=24.64%, avg=307.00, stdev=62.53, samples=9 iops : min= 55, max= 101, avg=76.33, stdev=15.65, samples=9 lat (usec) : 10=0.65%, 20=3.39%, 50=9.38%, 100=0.52%, 250=4.82% lat (usec) : 500=11.85%, 750=3.12%, 1000=0.91% lat (msec) : 2=1.56%, 4=10.03%, 10=29.43%, 20=19.40%, 50=4.56% lat (msec) : 100=0.39% cpu : usr=0.28%, sys=8.69%, ctx=1007, majf=0, minf=17 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=148183: Fri Oct 24 11:24:13 2025 read: IOPS=74, BW=297KiB/s (304kB/s)(1436KiB/4836msec) clat (usec): min=7, max=49658, avg=7280.84, stdev=7383.64 lat (usec): min=8, max=49660, avg=7281.57, stdev=7383.69 clat percentiles (usec): | 1.00th=[ 11], 5.00th=[ 17], 10.00th=[ 22], 20.00th=[ 30], | 30.00th=[ 48], 40.00th=[ 4424], 50.00th=[ 6718], 60.00th=[ 8717], | 70.00th=[10683], 80.00th=[12649], 90.00th=[15401], 95.00th=[17433], | 99.00th=[35390], 99.50th=[47973], 99.90th=[49546], 99.95th=[49546], | 99.99th=[49546] bw ( KiB/s): min= 224, max= 391, per=24.47%, avg=289.67, stdev=54.82, samples=9 iops : min= 56, max= 97, avg=72.00, stdev=13.56, samples=9 write: IOPS=84, BW=338KiB/s (346kB/s)(1636KiB/4836msec); 0 zone resets clat (usec): min=174, max=28869, avg=5361.41, stdev=6354.33 lat (usec): min=175, max=28871, avg=5362.24, stdev=6354.36 clat percentiles (usec): | 1.00th=[ 188], 5.00th=[ 231], 10.00th=[ 265], 20.00th=[ 330], | 30.00th=[ 441], 40.00th=[ 725], 50.00th=[ 3097], 60.00th=[ 4490], | 70.00th=[ 6915], 80.00th=[ 9896], 90.00th=[15008], 95.00th=[18744], | 99.00th=[26346], 99.50th=[27657], 99.90th=[28967], 99.95th=[28967], | 99.99th=[28967] bw ( KiB/s): min= 247, max= 558, per=26.22%, avg=326.67, stdev=98.64, samples=9 iops : min= 61, max= 139, avg=81.33, stdev=24.63, samples=9 lat (usec) : 10=0.39%, 20=3.52%, 50=10.29%, 100=0.65%, 250=4.82% lat (usec) : 500=13.15%, 750=3.78%, 1000=0.39% lat (msec) : 2=1.43%, 4=8.85%, 10=27.21%, 20=21.74%, 50=3.78% cpu : usr=0.19%, sys=8.62%, ctx=962, majf=0, minf=14 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=148184: Fri Oct 24 11:24:13 2025 read: IOPS=82, BW=331KiB/s (339kB/s)(1564KiB/4719msec) clat (usec): min=7, max=55355, avg=7508.10, stdev=7670.73 lat (usec): min=7, max=55355, avg=7508.82, stdev=7670.73 clat percentiles (usec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 19], 20.00th=[ 29], | 30.00th=[ 43], 40.00th=[ 5014], 50.00th=[ 6652], 60.00th=[ 8356], | 70.00th=[10159], 80.00th=[12649], 90.00th=[16909], 95.00th=[21103], | 99.00th=[31851], 99.50th=[38536], 99.90th=[55313], 99.95th=[55313], | 99.99th=[55313] bw ( KiB/s): min= 200, max= 510, per=27.96%, avg=331.00, stdev=88.52, samples=9 iops : min= 50, max= 127, avg=82.44, stdev=21.94, samples=9 write: IOPS=79, BW=320KiB/s (327kB/s)(1508KiB/4719msec); 0 zone resets clat (usec): min=154, max=39448, avg=4657.13, stdev=5869.58 lat (usec): min=154, max=39449, avg=4658.40, stdev=5869.63 clat percentiles (usec): | 1.00th=[ 194], 5.00th=[ 219], 10.00th=[ 260], 20.00th=[ 338], | 30.00th=[ 437], 40.00th=[ 873], 50.00th=[ 3130], 60.00th=[ 4293], | 70.00th=[ 5211], 80.00th=[ 8160], 90.00th=[12125], 95.00th=[16909], | 99.00th=[28705], 99.50th=[37487], 99.90th=[39584], 99.95th=[39584], | 99.99th=[39584] bw ( KiB/s): min= 200, max= 399, per=24.84%, avg=309.56, stdev=64.20, samples=9 iops : min= 50, max= 99, avg=77.00, stdev=15.97, samples=9 lat (usec) : 10=0.39%, 20=5.60%, 50=10.16%, 100=0.39%, 250=4.30% lat (usec) : 500=12.37%, 750=2.47%, 1000=1.30% lat (msec) : 2=0.78%, 4=8.72%, 10=30.99%, 20=18.23%, 50=4.17% lat (msec) : 100=0.13% cpu : usr=0.32%, sys=8.90%, ctx=966, majf=0, minf=16 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=148185: Fri Oct 24 11:24:13 2025 read: IOPS=80, BW=322KiB/s (330kB/s)(1508KiB/4678msec) clat (usec): min=4, max=53738, avg=7245.18, stdev=7678.59 lat (usec): min=5, max=53739, avg=7245.94, stdev=7678.56 clat percentiles (usec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 19], 20.00th=[ 26], | 30.00th=[ 42], 40.00th=[ 4293], 50.00th=[ 6259], 60.00th=[ 8225], | 70.00th=[10421], 80.00th=[12387], 90.00th=[16188], 95.00th=[20317], | 99.00th=[35390], 99.50th=[38011], 99.90th=[53740], 99.95th=[53740], | 99.99th=[53740] bw ( KiB/s): min= 232, max= 495, per=27.14%, avg=321.33, stdev=74.23, samples=9 iops : min= 58, max= 123, avg=79.89, stdev=18.37, samples=9 write: IOPS=83, BW=334KiB/s (342kB/s)(1564KiB/4678msec); 0 zone resets clat (usec): min=171, max=33887, avg=4922.17, stdev=6101.25 lat (usec): min=172, max=33887, avg=4923.24, stdev=6101.34 clat percentiles (usec): | 1.00th=[ 180], 5.00th=[ 217], 10.00th=[ 243], 20.00th=[ 314], | 30.00th=[ 408], 40.00th=[ 791], 50.00th=[ 2835], 60.00th=[ 4228], | 70.00th=[ 6259], 80.00th=[ 8848], 90.00th=[12649], 95.00th=[18482], | 99.00th=[28705], 99.50th=[30016], 99.90th=[33817], 99.95th=[33817], | 99.99th=[33817] bw ( KiB/s): min= 280, max= 471, per=26.90%, avg=335.22, stdev=61.08, samples=9 iops : min= 70, max= 117, avg=83.44, stdev=15.09, samples=9 lat (usec) : 10=0.91%, 20=5.08%, 50=10.03%, 100=0.52%, 250=6.64% lat (usec) : 500=11.85%, 750=1.56%, 1000=1.56% lat (msec) : 2=2.99%, 4=8.07%, 10=27.08%, 20=19.53%, 50=4.04% lat (msec) : 100=0.13% cpu : usr=0.24%, sys=9.19%, ctx=936, majf=0, minf=16 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=1185KiB/s (1213kB/s), 293KiB/s-331KiB/s (300kB/s-339kB/s), io=5988KiB (6132kB), run=4678-5055msec WRITE: bw=1246KiB/s (1276kB/s), 315KiB/s-338KiB/s (322kB/s-346kB/s), io=6300KiB (6451kB), run=4678-5055msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148187: Fri Oct 24 11:24:15 2025 read: IOPS=48, BW=193KiB/s (197kB/s)(1480KiB/7675msec) clat (usec): min=1690, max=43338, avg=7220.15, stdev=6734.27 lat (usec): min=1690, max=43339, avg=7221.62, stdev=6733.85 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2278], 10.00th=[ 2474], 20.00th=[ 2835], | 30.00th=[ 3228], 40.00th=[ 3785], 50.00th=[ 4359], 60.00th=[ 5407], | 70.00th=[ 7635], 80.00th=[10290], 90.00th=[16319], 95.00th=[21890], | 99.00th=[34866], 99.50th=[42206], 99.90th=[43254], 99.95th=[43254], | 99.99th=[43254] bw ( KiB/s): min= 87, max= 384, per=24.61%, avg=191.93, stdev=92.71, samples=15 iops : min= 21, max= 96, avg=47.53, stdev=23.32, samples=15 write: IOPS=51, BW=207KiB/s (212kB/s)(1592KiB/7675msec); 0 zone resets clat (usec): min=3406, max=54673, avg=12521.10, stdev=7441.60 lat (usec): min=3406, max=54674, avg=12522.53, stdev=7441.57 clat percentiles (usec): | 1.00th=[ 4146], 5.00th=[ 5538], 10.00th=[ 6194], 20.00th=[ 7308], | 30.00th=[ 8291], 40.00th=[ 9110], 50.00th=[10028], 60.00th=[11469], | 70.00th=[13435], 80.00th=[16909], 90.00th=[22676], 95.00th=[28181], | 99.00th=[46400], 99.50th=[52167], 99.90th=[54789], 99.95th=[54789], | 99.99th=[54789] bw ( KiB/s): min= 63, max= 360, per=25.27%, avg=207.20, stdev=97.85, samples=15 iops : min= 15, max= 90, avg=51.40, stdev=24.60, samples=15 lat (msec) : 2=0.91%, 4=20.83%, 10=41.93%, 20=26.82%, 50=9.11% lat (msec) : 100=0.39% cpu : usr=0.29%, sys=2.83%, ctx=831, majf=0, minf=10 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=148188: Fri Oct 24 11:24:15 2025 read: IOPS=46, BW=187KiB/s (192kB/s)(1436KiB/7670msec) clat (usec): min=1608, max=41833, avg=6828.78, stdev=6480.24 lat (usec): min=1609, max=41834, avg=6829.71, stdev=6480.21 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2278], 10.00th=[ 2507], 20.00th=[ 2933], | 30.00th=[ 3261], 40.00th=[ 3687], 50.00th=[ 4359], 60.00th=[ 5014], | 70.00th=[ 6390], 80.00th=[ 9241], 90.00th=[15401], 95.00th=[21627], | 99.00th=[34866], 99.50th=[38011], 99.90th=[41681], 99.95th=[41681], | 99.99th=[41681] bw ( KiB/s): min= 91, max= 344, per=24.02%, avg=187.33, stdev=91.16, samples=15 iops : min= 22, max= 86, avg=46.40, stdev=22.94, samples=15 write: IOPS=53, BW=213KiB/s (218kB/s)(1636KiB/7670msec); 0 zone resets clat (usec): min=3384, max=45582, avg=12715.90, stdev=7210.79 lat (usec): min=3385, max=45585, avg=12717.18, stdev=7210.83 clat percentiles (usec): | 1.00th=[ 4621], 5.00th=[ 5604], 10.00th=[ 6390], 20.00th=[ 7308], | 30.00th=[ 8225], 40.00th=[ 9110], 50.00th=[10421], 60.00th=[11731], | 70.00th=[13829], 80.00th=[16909], 90.00th=[22938], 95.00th=[27657], | 99.00th=[37487], 99.50th=[42206], 99.90th=[45351], 99.95th=[45351], | 99.99th=[45351] bw ( KiB/s): min= 111, max= 383, per=25.92%, avg=212.53, stdev=89.54, samples=15 iops : min= 27, max= 95, avg=52.73, stdev=22.51, samples=15 lat (msec) : 2=1.17%, 4=19.92%, 10=42.19%, 20=26.17%, 50=10.55% cpu : usr=0.30%, sys=2.91%, ctx=848, majf=0, minf=10 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=148189: Fri Oct 24 11:24:15 2025 read: IOPS=51, BW=207KiB/s (212kB/s)(1564KiB/7546msec) clat (usec): min=1578, max=40369, avg=7013.83, stdev=6403.87 lat (usec): min=1578, max=40370, avg=7015.02, stdev=6403.74 clat percentiles (usec): | 1.00th=[ 1909], 5.00th=[ 2212], 10.00th=[ 2474], 20.00th=[ 2966], | 30.00th=[ 3359], 40.00th=[ 3818], 50.00th=[ 4293], 60.00th=[ 5145], | 70.00th=[ 6980], 80.00th=[ 9634], 90.00th=[16712], 95.00th=[21627], | 99.00th=[32637], 99.50th=[39060], 99.90th=[40109], 99.95th=[40109], | 99.99th=[40109] bw ( KiB/s): min= 95, max= 463, per=25.80%, avg=201.21, stdev=106.19, samples=14 iops : min= 23, max= 115, avg=49.86, stdev=26.60, samples=14 write: IOPS=49, BW=200KiB/s (205kB/s)(1508KiB/7546msec); 0 zone resets clat (usec): min=3615, max=52184, avg=12691.24, stdev=7532.56 lat (usec): min=3616, max=52184, avg=12692.71, stdev=7532.70 clat percentiles (usec): | 1.00th=[ 4080], 5.00th=[ 5276], 10.00th=[ 5997], 20.00th=[ 7177], | 30.00th=[ 8160], 40.00th=[ 8848], 50.00th=[10159], 60.00th=[11994], | 70.00th=[13829], 80.00th=[17433], 90.00th=[23987], 95.00th=[28705], | 99.00th=[39584], 99.50th=[45876], 99.90th=[52167], 99.95th=[52167], | 99.99th=[52167] bw ( KiB/s): min= 104, max= 384, per=23.28%, avg=190.86, stdev=85.77, samples=14 iops : min= 26, max= 96, avg=47.29, stdev=21.54, samples=14 lat (msec) : 2=1.04%, 4=22.27%, 10=41.41%, 20=25.39%, 50=9.77% lat (msec) : 100=0.13% cpu : usr=0.40%, sys=2.78%, ctx=854, majf=0, minf=12 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=148190: Fri Oct 24 11:24:15 2025 read: IOPS=49, BW=197KiB/s (202kB/s)(1508KiB/7650msec) clat (usec): min=1684, max=63913, avg=7370.75, stdev=7258.99 lat (usec): min=1685, max=63914, avg=7371.75, stdev=7259.00 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2212], 10.00th=[ 2507], 20.00th=[ 2835], | 30.00th=[ 3195], 40.00th=[ 3654], 50.00th=[ 4293], 60.00th=[ 5211], | 70.00th=[ 6783], 80.00th=[11600], 90.00th=[17433], 95.00th=[22152], | 99.00th=[32375], 99.50th=[41157], 99.90th=[63701], 99.95th=[63701], | 99.99th=[63701] bw ( KiB/s): min= 95, max= 391, per=25.21%, avg=196.60, stdev=92.14, samples=15 iops : min= 23, max= 97, avg=48.73, stdev=23.13, samples=15 write: IOPS=51, BW=204KiB/s (209kB/s)(1564KiB/7650msec); 0 zone resets clat (usec): min=3957, max=49117, avg=12419.32, stdev=6995.06 lat (usec): min=3959, max=49118, avg=12420.65, stdev=6995.03 clat percentiles (usec): | 1.00th=[ 4146], 5.00th=[ 5342], 10.00th=[ 6194], 20.00th=[ 7177], | 30.00th=[ 8160], 40.00th=[ 9110], 50.00th=[10421], 60.00th=[11600], | 70.00th=[13304], 80.00th=[16581], 90.00th=[21627], 95.00th=[27657], | 99.00th=[39584], 99.50th=[43779], 99.90th=[49021], 99.95th=[49021], | 99.99th=[49021] bw ( KiB/s): min= 95, max= 376, per=24.98%, avg=204.87, stdev=98.18, samples=15 iops : min= 23, max= 94, avg=50.80, stdev=24.68, samples=15 lat (msec) : 2=1.30%, 4=21.48%, 10=39.71%, 20=27.21%, 50=10.16% lat (msec) : 100=0.13% cpu : usr=0.22%, sys=2.89%, ctx=837, majf=0, minf=10 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=780KiB/s (799kB/s), 187KiB/s-207KiB/s (192kB/s-212kB/s), io=5988KiB (6132kB), run=7546-7675msec WRITE: bw=821KiB/s (841kB/s), 200KiB/s-213KiB/s (205kB/s-218kB/s), io=6300KiB (6451kB), run=7546-7675msec