== sanity test 398b: DIO and buffer IO race ============== 19:27:06 (1781047626) /usr/bin/fio 12+0 records in 12+0 records out 12582912 bytes (13 MB, 12 MiB) copied, 0.0920377 s, 137 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=121508: Tue Jun 9 19:27:15 2026 read: IOPS=135, BW=542KiB/s (555kB/s)(1480KiB/2733msec) clat (usec): min=7, max=36129, avg=2103.53, stdev=3356.61 lat (usec): min=7, max=36130, avg=2103.96, stdev=3356.64 clat percentiles (usec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 18], | 30.00th=[ 24], 40.00th=[ 35], 50.00th=[ 141], 60.00th=[ 2057], | 70.00th=[ 2999], 80.00th=[ 3949], 90.00th=[ 5211], 95.00th=[ 6521], | 99.00th=[15795], 99.50th=[20317], 99.90th=[35914], 99.95th=[35914], | 99.99th=[35914] bw ( KiB/s): min= 472, max= 624, per=24.08%, avg=527.40, stdev=74.47, samples=5 iops : min= 118, max= 156, avg=131.80, stdev=18.66, samples=5 write: IOPS=145, BW=583KiB/s (596kB/s)(1592KiB/2733msec); 0 zone resets clat (usec): min=118, max=38474, avg=4875.41, stdev=6040.28 lat (usec): min=118, max=38474, avg=4876.09, stdev=6040.32 clat percentiles (usec): | 1.00th=[ 147], 5.00th=[ 206], 10.00th=[ 262], 20.00th=[ 379], | 30.00th=[ 1029], 40.00th=[ 1795], 50.00th=[ 2540], 60.00th=[ 3720], | 70.00th=[ 5276], 80.00th=[ 8356], 90.00th=[13304], 95.00th=[19006], | 99.00th=[23987], 99.50th=[34341], 99.90th=[38536], 99.95th=[38536], | 99.99th=[38536] bw ( KiB/s): min= 480, max= 664, per=24.81%, avg=571.80, stdev=76.63, samples=5 iops : min= 120, max= 166, avg=142.80, stdev=19.32, samples=5 lat (usec) : 10=1.69%, 20=9.77%, 50=12.11%, 100=0.39%, 250=4.82% lat (usec) : 500=9.51%, 750=1.43%, 1000=0.65% lat (msec) : 2=10.94%, 4=20.31%, 10=19.27%, 20=6.64%, 50=2.47% cpu : usr=0.29%, sys=10.58%, ctx=1014, 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=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=121509: Tue Jun 9 19:27:15 2026 read: IOPS=131, BW=528KiB/s (540kB/s)(1436KiB/2722msec) clat (usec): min=5, max=35843, avg=2516.87, stdev=4276.20 lat (usec): min=5, max=35844, avg=2517.33, stdev=4276.20 clat percentiles (usec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 38], 50.00th=[ 1450], 60.00th=[ 2245], | 70.00th=[ 3228], 80.00th=[ 4080], 90.00th=[ 5538], 95.00th=[ 8586], | 99.00th=[23987], 99.50th=[26608], 99.90th=[35914], 99.95th=[35914], | 99.99th=[35914] bw ( KiB/s): min= 416, max= 728, per=23.86%, avg=522.60, stdev=130.76, samples=5 iops : min= 104, max= 182, avg=130.60, stdev=32.71, samples=5 write: IOPS=150, BW=601KiB/s (615kB/s)(1636KiB/2722msec); 0 zone resets clat (usec): min=129, max=27477, avg=4400.93, stdev=5296.37 lat (usec): min=129, max=27478, avg=4401.50, stdev=5296.37 clat percentiles (usec): | 1.00th=[ 149], 5.00th=[ 208], 10.00th=[ 251], 20.00th=[ 363], | 30.00th=[ 644], 40.00th=[ 1582], 50.00th=[ 2376], 60.00th=[ 3359], | 70.00th=[ 4883], 80.00th=[ 7898], 90.00th=[12125], 95.00th=[16188], | 99.00th=[23200], 99.50th=[27132], 99.90th=[27395], 99.95th=[27395], | 99.99th=[27395] bw ( KiB/s): min= 496, max= 808, per=25.26%, avg=582.20, stdev=129.71, samples=5 iops : min= 124, max= 202, avg=145.40, stdev=32.46, samples=5 lat (usec) : 10=1.69%, 20=10.16%, 50=9.38%, 100=0.39%, 250=5.99% lat (usec) : 500=9.11%, 750=2.34%, 1000=0.52% lat (msec) : 2=10.81%, 4=20.96%, 10=19.27%, 20=7.55%, 50=1.82% cpu : usr=0.22%, sys=10.73%, ctx=1053, 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=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=121511: Tue Jun 9 19:27:15 2026 read: IOPS=157, BW=630KiB/s (646kB/s)(1564KiB/2481msec) clat (usec): min=3, max=30587, avg=2096.72, stdev=3164.43 lat (usec): min=3, max=30588, avg=2097.25, stdev=3164.46 clat percentiles (usec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 36], 50.00th=[ 1319], 60.00th=[ 2212], | 70.00th=[ 2900], 80.00th=[ 3884], 90.00th=[ 5080], 95.00th=[ 6390], | 99.00th=[13435], 99.50th=[28705], 99.90th=[30540], 99.95th=[30540], | 99.99th=[30540] bw ( KiB/s): min= 514, max= 672, per=26.69%, avg=584.50, stdev=76.11, samples=4 iops : min= 128, max= 168, avg=146.00, stdev=19.18, samples=4 write: IOPS=151, BW=608KiB/s (622kB/s)(1508KiB/2481msec); 0 zone resets clat (usec): min=120, max=29136, avg=4371.68, stdev=5357.38 lat (usec): min=121, max=29136, avg=4372.27, stdev=5357.38 clat percentiles (usec): | 1.00th=[ 143], 5.00th=[ 194], 10.00th=[ 233], 20.00th=[ 351], | 30.00th=[ 676], 40.00th=[ 1582], 50.00th=[ 2311], 60.00th=[ 3261], | 70.00th=[ 4883], 80.00th=[ 7570], 90.00th=[12387], 95.00th=[15926], | 99.00th=[24249], 99.50th=[25822], 99.90th=[29230], 99.95th=[29230], | 99.99th=[29230] bw ( KiB/s): min= 528, max= 608, per=25.30%, avg=583.25, stdev=37.12, samples=4 iops : min= 132, max= 152, avg=145.75, stdev= 9.25, samples=4 lat (usec) : 4=0.13%, 10=2.08%, 20=12.11%, 50=9.24%, 100=1.04% lat (usec) : 250=5.73%, 500=7.94%, 750=1.82%, 1000=0.91% lat (msec) : 2=10.68%, 4=20.57%, 10=19.66%, 20=6.64%, 50=1.43% cpu : usr=0.40%, sys=10.85%, ctx=1002, 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=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=121513: Tue Jun 9 19:27:15 2026 read: IOPS=141, BW=568KiB/s (582kB/s)(1508KiB/2655msec) clat (usec): min=4, max=30111, avg=2218.82, stdev=3679.74 lat (usec): min=4, max=30111, avg=2219.26, stdev=3679.73 clat percentiles (usec): | 1.00th=[ 6], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 35], 50.00th=[ 70], 60.00th=[ 2057], | 70.00th=[ 2737], 80.00th=[ 3818], 90.00th=[ 5407], 95.00th=[ 7635], | 99.00th=[20579], 99.50th=[22676], 99.90th=[30016], 99.95th=[30016], | 99.99th=[30016] bw ( KiB/s): min= 440, max= 712, per=25.28%, avg=553.60, stdev=109.46, samples=5 iops : min= 110, max= 178, avg=138.40, stdev=27.36, samples=5 write: IOPS=147, BW=589KiB/s (603kB/s)(1564KiB/2655msec); 0 zone resets clat (usec): min=121, max=30383, avg=4604.65, stdev=5650.14 lat (usec): min=121, max=30384, avg=4605.23, stdev=5650.14 clat percentiles (usec): | 1.00th=[ 176], 5.00th=[ 251], 10.00th=[ 310], 20.00th=[ 371], | 30.00th=[ 562], 40.00th=[ 1696], 50.00th=[ 2507], 60.00th=[ 3425], | 70.00th=[ 5080], 80.00th=[ 7373], 90.00th=[13173], 95.00th=[16909], | 99.00th=[25822], 99.50th=[28443], 99.90th=[30278], 99.95th=[30278], | 99.99th=[30278] bw ( KiB/s): min= 456, max= 704, per=25.23%, avg=581.60, stdev=110.11, samples=5 iops : min= 114, max= 176, avg=145.40, stdev=27.53, samples=5 lat (usec) : 10=2.73%, 20=11.07%, 50=9.64%, 100=1.43%, 250=2.86% lat (usec) : 500=12.24%, 750=1.17%, 1000=0.91% lat (msec) : 2=9.38%, 4=20.57%, 10=18.10%, 20=7.94%, 50=1.95% cpu : usr=0.26%, sys=10.17%, ctx=1053, 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=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=2191KiB/s (2244kB/s), 528KiB/s-630KiB/s (540kB/s-646kB/s), io=5988KiB (6132kB), run=2481-2733msec WRITE: bw=2305KiB/s (2360kB/s), 583KiB/s-608KiB/s (596kB/s-622kB/s), io=6300KiB (6451kB), run=2481-2733msec rand-rw: (groupid=0, jobs=1): err= 0: pid=121507: Tue Jun 9 19:27:22 2026 read: IOPS=38, BW=153KiB/s (157kB/s)(1480KiB/9679msec) clat (usec): min=909, max=58108, avg=3333.21, stdev=4986.76 lat (usec): min=910, max=58108, avg=3333.84, stdev=4986.76 clat percentiles (usec): | 1.00th=[ 947], 5.00th=[ 1074], 10.00th=[ 1172], 20.00th=[ 1352], | 30.00th=[ 1516], 40.00th=[ 1713], 50.00th=[ 1909], 60.00th=[ 2212], | 70.00th=[ 2704], 80.00th=[ 3392], 90.00th=[ 5669], 95.00th=[11076], | 99.00th=[28443], 99.50th=[35390], 99.90th=[57934], 99.95th=[57934], | 99.99th=[57934] bw ( KiB/s): min= 104, max= 288, per=24.72%, avg=150.79, stdev=47.14, samples=19 iops : min= 26, max= 72, avg=37.68, stdev=11.80, samples=19 write: IOPS=41, BW=164KiB/s (168kB/s)(1592KiB/9679msec); 0 zone resets clat (usec): min=9766, max=62495, avg=21183.20, stdev=6911.15 lat (usec): min=9766, max=62496, avg=21184.04, stdev=6911.14 clat percentiles (usec): | 1.00th=[10683], 5.00th=[12518], 10.00th=[13960], 20.00th=[15795], | 30.00th=[16909], 40.00th=[18220], 50.00th=[19530], 60.00th=[21627], | 70.00th=[23725], 80.00th=[26608], 90.00th=[30278], 95.00th=[33424], | 99.00th=[42206], 99.50th=[57934], 99.90th=[62653], 99.95th=[62653], | 99.99th=[62653] bw ( KiB/s): min= 97, max= 232, per=25.63%, avg=164.26, stdev=32.58, samples=19 iops : min= 24, max= 58, avg=41.05, stdev= 8.17, samples=19 lat (usec) : 1000=1.04% lat (msec) : 2=25.39%, 4=14.45%, 10=4.69%, 20=29.17%, 50=24.87% lat (msec) : 100=0.39% cpu : usr=0.11%, sys=1.61%, ctx=823, 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=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=121510: Tue Jun 9 19:27:22 2026 read: IOPS=36, BW=146KiB/s (150kB/s)(1436KiB/9814msec) clat (usec): min=917, max=29341, avg=2810.70, stdev=3440.65 lat (usec): min=918, max=29341, avg=2811.35, stdev=3440.66 clat percentiles (usec): | 1.00th=[ 938], 5.00th=[ 1074], 10.00th=[ 1172], 20.00th=[ 1319], | 30.00th=[ 1467], 40.00th=[ 1631], 50.00th=[ 1860], 60.00th=[ 2147], | 70.00th=[ 2474], 80.00th=[ 2999], 90.00th=[ 4424], 95.00th=[ 8717], | 99.00th=[21103], 99.50th=[26084], 99.90th=[29230], 99.95th=[29230], | 99.99th=[29230] bw ( KiB/s): min= 56, max= 256, per=23.77%, avg=145.00, stdev=49.79, samples=19 iops : min= 14, max= 64, avg=36.21, stdev=12.51, samples=19 write: IOPS=41, BW=167KiB/s (171kB/s)(1636KiB/9814msec); 0 zone resets clat (usec): min=9178, max=80781, avg=21481.66, stdev=7695.12 lat (usec): min=9179, max=80781, avg=21482.43, stdev=7695.13 clat percentiles (usec): | 1.00th=[10159], 5.00th=[12387], 10.00th=[13435], 20.00th=[15664], | 30.00th=[17171], 40.00th=[18482], 50.00th=[20055], 60.00th=[21627], | 70.00th=[23987], 80.00th=[27395], 90.00th=[30016], 95.00th=[33162], | 99.00th=[46400], 99.50th=[56886], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 112, max= 224, per=25.54%, avg=163.74, stdev=30.96, samples=19 iops : min= 28, max= 56, avg=40.89, stdev= 7.78, samples=19 lat (usec) : 1000=1.30% lat (msec) : 2=24.35%, 4=15.49%, 10=4.56%, 20=27.34%, 50=26.43% lat (msec) : 100=0.52% cpu : usr=0.12%, sys=1.56%, ctx=814, 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=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=121512: Tue Jun 9 19:27:22 2026 read: IOPS=41, BW=167KiB/s (171kB/s)(1564KiB/9362msec) clat (usec): min=880, max=46502, avg=2937.21, stdev=3912.37 lat (usec): min=880, max=46503, avg=2937.82, stdev=3912.39 clat percentiles (usec): | 1.00th=[ 930], 5.00th=[ 1074], 10.00th=[ 1156], 20.00th=[ 1319], | 30.00th=[ 1467], 40.00th=[ 1614], 50.00th=[ 1876], 60.00th=[ 2057], | 70.00th=[ 2409], 80.00th=[ 3032], 90.00th=[ 4817], 95.00th=[ 8848], | 99.00th=[20317], 99.50th=[21890], 99.90th=[46400], 99.95th=[46400], | 99.99th=[46400] bw ( KiB/s): min= 96, max= 280, per=27.84%, avg=169.83, stdev=60.21, samples=18 iops : min= 24, max= 70, avg=42.44, stdev=15.07, samples=18 write: IOPS=40, BW=161KiB/s (165kB/s)(1508KiB/9362msec); 0 zone resets clat (usec): min=9314, max=78446, avg=21752.86, stdev=7200.38 lat (usec): min=9314, max=78447, avg=21753.69, stdev=7200.42 clat percentiles (usec): | 1.00th=[10159], 5.00th=[13698], 10.00th=[14746], 20.00th=[16319], | 30.00th=[17695], 40.00th=[19006], 50.00th=[20055], 60.00th=[22152], | 70.00th=[24249], 80.00th=[26608], 90.00th=[29754], 95.00th=[33424], | 99.00th=[44303], 99.50th=[62653], 99.90th=[78119], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 104, max= 224, per=25.17%, avg=161.33, stdev=28.81, samples=18 iops : min= 26, max= 56, avg=40.33, stdev= 7.20, samples=18 lat (usec) : 1000=1.17% lat (msec) : 2=28.13%, 4=14.45%, 10=5.08%, 20=25.00%, 50=25.78% lat (msec) : 100=0.39% cpu : usr=0.10%, sys=1.61%, ctx=833, majf=0, minf=13 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=121514: Tue Jun 9 19:27:22 2026 read: IOPS=38, BW=154KiB/s (158kB/s)(1508KiB/9767msec) clat (usec): min=870, max=41434, avg=3305.38, stdev=4661.74 lat (usec): min=870, max=41435, avg=3306.05, stdev=4661.75 clat percentiles (usec): | 1.00th=[ 963], 5.00th=[ 1057], 10.00th=[ 1139], 20.00th=[ 1270], | 30.00th=[ 1418], 40.00th=[ 1598], 50.00th=[ 1778], 60.00th=[ 2180], | 70.00th=[ 2638], 80.00th=[ 3425], 90.00th=[ 5669], 95.00th=[13304], | 99.00th=[25035], 99.50th=[34341], 99.90th=[41681], 99.95th=[41681], | 99.99th=[41681] bw ( KiB/s): min= 64, max= 256, per=24.79%, avg=151.21, stdev=52.73, samples=19 iops : min= 16, max= 64, avg=37.79, stdev=13.20, samples=19 write: IOPS=40, BW=160KiB/s (164kB/s)(1564KiB/9767msec); 0 zone resets clat (usec): min=9294, max=72260, avg=21741.91, stdev=7186.89 lat (usec): min=9294, max=72261, avg=21742.80, stdev=7186.88 clat percentiles (usec): | 1.00th=[10552], 5.00th=[12649], 10.00th=[13960], 20.00th=[16450], | 30.00th=[17695], 40.00th=[19006], 50.00th=[20317], 60.00th=[22152], | 70.00th=[24249], 80.00th=[27132], 90.00th=[30540], 95.00th=[33162], | 99.00th=[46924], 99.50th=[53216], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 105, max= 224, per=24.71%, avg=158.37, stdev=30.02, samples=19 iops : min= 26, max= 56, avg=39.58, stdev= 7.53, samples=19 lat (usec) : 1000=1.17% lat (msec) : 2=26.30%, 4=13.15%, 10=5.47%, 20=26.43%, 50=27.08% lat (msec) : 100=0.39% cpu : usr=0.16%, sys=1.55%, ctx=831, majf=0, minf=11 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=610KiB/s (625kB/s), 146KiB/s-167KiB/s (150kB/s-171kB/s), io=5988KiB (6132kB), run=9362-9814msec WRITE: bw=642KiB/s (657kB/s), 160KiB/s-167KiB/s (164kB/s-171kB/s), io=6300KiB (6451kB), run=9362-9814msec