== sanity test 398b: DIO and buffer IO race ============== 09:30:28 (1759843828) /usr/bin/fio 12+0 records in 12+0 records out 12582912 bytes (13 MB, 12 MiB) copied, 0.0727234 s, 173 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=122371: Tue Oct 7 09:30:36 2025 read: IOPS=131, BW=527KiB/s (539kB/s)(1480KiB/2811msec) clat (usec): min=7, max=28817, avg=2222.69, stdev=3332.64 lat (usec): min=7, max=28817, avg=2223.15, stdev=3332.65 clat percentiles (usec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 30], 40.00th=[ 48], 50.00th=[ 1549], 60.00th=[ 2376], | 70.00th=[ 2966], 80.00th=[ 3916], 90.00th=[ 5276], 95.00th=[ 6718], | 99.00th=[19530], 99.50th=[26870], 99.90th=[28705], 99.95th=[28705], | 99.99th=[28705] bw ( KiB/s): min= 360, max= 576, per=23.66%, avg=500.00, stdev=89.71, samples=5 iops : min= 90, max= 144, avg=125.00, stdev=22.43, samples=5 write: IOPS=141, BW=566KiB/s (580kB/s)(1592KiB/2811msec); 0 zone resets clat (usec): min=133, max=29666, avg=4966.08, stdev=5858.49 lat (usec): min=134, max=29667, avg=4966.77, stdev=5858.61 clat percentiles (usec): | 1.00th=[ 159], 5.00th=[ 198], 10.00th=[ 237], 20.00th=[ 347], | 30.00th=[ 725], 40.00th=[ 1795], 50.00th=[ 2704], 60.00th=[ 3949], | 70.00th=[ 5669], 80.00th=[ 9110], 90.00th=[13435], 95.00th=[18482], | 99.00th=[23725], 99.50th=[27395], 99.90th=[29754], 99.95th=[29754], | 99.99th=[29754] bw ( KiB/s): min= 456, max= 664, per=24.48%, avg=544.20, stdev=75.84, samples=5 iops : min= 114, max= 166, avg=136.00, stdev=18.97, samples=5 lat (usec) : 10=1.17%, 20=9.11%, 50=9.64%, 100=1.69%, 250=6.12% lat (usec) : 500=8.72%, 750=1.82%, 1000=0.13% lat (msec) : 2=9.64%, 4=22.53%, 10=19.01%, 20=7.94%, 50=2.47% cpu : usr=0.21%, sys=11.28%, ctx=1066, majf=0, minf=19 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=122373: Tue Oct 7 09:30:36 2025 read: IOPS=128, BW=516KiB/s (528kB/s)(1436KiB/2784msec) clat (usec): min=5, max=23226, avg=2622.00, stdev=3521.66 lat (usec): min=6, max=23226, avg=2622.94, stdev=3521.83 clat percentiles (usec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 21], | 30.00th=[ 36], 40.00th=[ 96], 50.00th=[ 2057], 60.00th=[ 2769], | 70.00th=[ 3556], 80.00th=[ 4490], 90.00th=[ 5735], 95.00th=[ 6718], | 99.00th=[20841], 99.50th=[21365], 99.90th=[23200], 99.95th=[23200], | 99.99th=[23200] bw ( KiB/s): min= 368, max= 632, per=24.03%, avg=507.80, stdev=97.20, samples=5 iops : min= 92, max= 158, avg=126.80, stdev=24.27, samples=5 write: IOPS=146, BW=588KiB/s (602kB/s)(1636KiB/2784msec); 0 zone resets clat (usec): min=119, max=24069, avg=4467.18, stdev=5211.43 lat (usec): min=119, max=24069, avg=4467.98, stdev=5211.63 clat percentiles (usec): | 1.00th=[ 135], 5.00th=[ 217], 10.00th=[ 251], 20.00th=[ 343], | 30.00th=[ 578], 40.00th=[ 1467], 50.00th=[ 2311], 60.00th=[ 3654], | 70.00th=[ 5276], 80.00th=[ 8160], 90.00th=[12125], 95.00th=[15401], | 99.00th=[22676], 99.50th=[23462], 99.90th=[23987], 99.95th=[23987], | 99.99th=[23987] bw ( KiB/s): min= 512, max= 632, per=25.57%, avg=568.40, stdev=43.00, samples=5 iops : min= 128, max= 158, avg=142.00, stdev=10.77, samples=5 lat (usec) : 10=1.56%, 20=6.64%, 50=9.24%, 100=1.30%, 250=5.60% lat (usec) : 500=9.64%, 750=2.08%, 1000=0.52% lat (msec) : 2=11.33%, 4=21.22%, 10=20.57%, 20=8.72%, 50=1.56% cpu : usr=0.22%, sys=10.42%, ctx=1062, majf=0, minf=18 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=122374: Tue Oct 7 09:30:36 2025 read: IOPS=138, BW=552KiB/s (565kB/s)(1564KiB/2833msec) clat (usec): min=5, max=23203, avg=2415.94, stdev=3179.99 lat (usec): min=5, max=23203, avg=2416.58, stdev=3179.88 clat percentiles (usec): | 1.00th=[ 8], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 23], | 30.00th=[ 34], 40.00th=[ 84], 50.00th=[ 1778], 60.00th=[ 2638], | 70.00th=[ 3392], 80.00th=[ 4293], 90.00th=[ 5342], 95.00th=[ 6521], | 99.00th=[19792], 99.50th=[22676], 99.90th=[23200], 99.95th=[23200], | 99.99th=[23200] bw ( KiB/s): min= 423, max= 608, per=24.60%, avg=519.80, stdev=84.00, samples=5 iops : min= 105, max= 152, avg=129.80, stdev=21.22, samples=5 write: IOPS=133, BW=532KiB/s (545kB/s)(1508KiB/2833msec); 0 zone resets clat (usec): min=117, max=44549, avg=4969.29, stdev=6146.93 lat (usec): min=117, max=44550, avg=4969.88, stdev=6146.95 clat percentiles (usec): | 1.00th=[ 149], 5.00th=[ 182], 10.00th=[ 243], 20.00th=[ 363], | 30.00th=[ 1029], 40.00th=[ 1762], 50.00th=[ 2704], 60.00th=[ 3916], | 70.00th=[ 5669], 80.00th=[ 8717], 90.00th=[13042], 95.00th=[17433], | 99.00th=[24249], 99.50th=[43254], 99.90th=[44303], 99.95th=[44303], | 99.99th=[44303] bw ( KiB/s): min= 424, max= 616, per=22.83%, avg=507.40, stdev=75.67, samples=5 iops : min= 106, max= 154, avg=126.80, stdev=18.90, samples=5 lat (usec) : 10=1.56%, 20=7.55%, 50=10.16%, 100=1.17%, 250=5.99% lat (usec) : 500=7.94%, 750=1.43%, 1000=0.26% lat (msec) : 2=11.33%, 4=21.35%, 10=21.61%, 20=7.68%, 50=1.95% cpu : usr=0.32%, sys=9.96%, ctx=1082, majf=0, minf=19 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=122375: Tue Oct 7 09:30:36 2025 read: IOPS=144, BW=578KiB/s (592kB/s)(1508KiB/2608msec) clat (usec): min=6, max=27721, avg=2215.96, stdev=3240.82 lat (usec): min=6, max=27721, avg=2216.62, stdev=3240.89 clat percentiles (usec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 28], 40.00th=[ 41], 50.00th=[ 1450], 60.00th=[ 2409], | 70.00th=[ 3097], 80.00th=[ 4080], 90.00th=[ 5145], 95.00th=[ 6587], | 99.00th=[16188], 99.50th=[26608], 99.90th=[27657], 99.95th=[27657], | 99.99th=[27657] bw ( KiB/s): min= 504, max= 712, per=27.38%, avg=578.60, stdev=79.79, samples=5 iops : min= 126, max= 178, avg=144.60, stdev=19.97, samples=5 write: IOPS=149, BW=600KiB/s (614kB/s)(1564KiB/2608msec); 0 zone resets clat (usec): min=136, max=24843, avg=4496.19, stdev=5284.35 lat (usec): min=136, max=24844, avg=4496.79, stdev=5284.33 clat percentiles (usec): | 1.00th=[ 153], 5.00th=[ 206], 10.00th=[ 251], 20.00th=[ 359], | 30.00th=[ 635], 40.00th=[ 1647], 50.00th=[ 2540], 60.00th=[ 3589], | 70.00th=[ 5014], 80.00th=[ 8160], 90.00th=[11731], 95.00th=[15926], | 99.00th=[23200], 99.50th=[23987], 99.90th=[24773], 99.95th=[24773], | 99.99th=[24773] bw ( KiB/s): min= 504, max= 704, per=27.10%, avg=602.40, stdev=81.07, samples=5 iops : min= 126, max= 176, avg=150.60, stdev=20.27, samples=5 lat (usec) : 10=2.08%, 20=9.51%, 50=9.24%, 100=1.30%, 250=5.73% lat (usec) : 500=9.11%, 750=2.08%, 1000=1.04% lat (msec) : 2=9.24%, 4=22.27%, 10=20.05%, 20=6.64%, 50=1.69% cpu : usr=0.08%, sys=10.78%, ctx=1081, majf=0, minf=18 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=2114KiB/s (2164kB/s), 516KiB/s-578KiB/s (528kB/s-592kB/s), io=5988KiB (6132kB), run=2608-2833msec WRITE: bw=2224KiB/s (2277kB/s), 532KiB/s-600KiB/s (545kB/s-614kB/s), io=6300KiB (6451kB), run=2608-2833msec rand-rw: (groupid=0, jobs=1): err= 0: pid=122376: Tue Oct 7 09:30:41 2025 read: IOPS=45, BW=180KiB/s (185kB/s)(1480KiB/8203msec) clat (usec): min=824, max=42558, avg=2693.24, stdev=3861.08 lat (usec): min=825, max=42560, avg=2693.86, stdev=3861.11 clat percentiles (usec): | 1.00th=[ 930], 5.00th=[ 1012], 10.00th=[ 1074], 20.00th=[ 1188], | 30.00th=[ 1303], 40.00th=[ 1401], 50.00th=[ 1565], 60.00th=[ 1827], | 70.00th=[ 2180], 80.00th=[ 2737], 90.00th=[ 4146], 95.00th=[ 8160], | 99.00th=[23462], 99.50th=[28705], 99.90th=[42730], 99.95th=[42730], | 99.99th=[42730] bw ( KiB/s): min= 109, max= 304, per=25.01%, avg=180.31, stdev=54.28, samples=16 iops : min= 27, max= 76, avg=45.06, stdev=13.59, samples=16 write: IOPS=48, BW=194KiB/s (199kB/s)(1592KiB/8203msec); 0 zone resets clat (usec): min=8220, max=62116, avg=18080.70, stdev=6580.45 lat (usec): min=8220, max=62116, avg=18081.54, stdev=6580.50 clat percentiles (usec): | 1.00th=[ 9241], 5.00th=[11076], 10.00th=[11994], 20.00th=[12911], | 30.00th=[14222], 40.00th=[15664], 50.00th=[16712], 60.00th=[17957], | 70.00th=[19530], 80.00th=[21365], 90.00th=[25822], 95.00th=[31327], | 99.00th=[42730], 99.50th=[45876], 99.90th=[62129], 99.95th=[62129], | 99.99th=[62129] bw ( KiB/s): min= 104, max= 256, per=25.63%, avg=194.50, stdev=49.98, samples=16 iops : min= 26, max= 64, avg=48.62, stdev=12.49, samples=16 lat (usec) : 1000=2.08% lat (msec) : 2=29.82%, 4=10.55%, 10=4.56%, 20=38.02%, 50=14.84% lat (msec) : 100=0.13% cpu : usr=0.07%, sys=1.99%, ctx=806, 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=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=122377: Tue Oct 7 09:30:41 2025 read: IOPS=43, BW=173KiB/s (177kB/s)(1436KiB/8297msec) clat (usec): min=858, max=31695, avg=2713.80, stdev=4016.03 lat (usec): min=859, max=31696, avg=2714.43, stdev=4016.03 clat percentiles (usec): | 1.00th=[ 898], 5.00th=[ 988], 10.00th=[ 1037], 20.00th=[ 1139], | 30.00th=[ 1270], 40.00th=[ 1369], 50.00th=[ 1516], 60.00th=[ 1745], | 70.00th=[ 1926], 80.00th=[ 2540], 90.00th=[ 4555], 95.00th=[ 8225], | 99.00th=[21890], 99.50th=[30016], 99.90th=[31589], 99.95th=[31589], | 99.99th=[31589] bw ( KiB/s): min= 88, max= 288, per=24.07%, avg=173.56, stdev=58.01, samples=16 iops : min= 22, max= 72, avg=43.38, stdev=14.53, samples=16 write: IOPS=49, BW=197KiB/s (202kB/s)(1636KiB/8297msec); 0 zone resets clat (usec): min=7839, max=57474, avg=17878.58, stdev=7122.33 lat (usec): min=7839, max=57476, avg=17879.42, stdev=7122.36 clat percentiles (usec): | 1.00th=[ 8094], 5.00th=[10683], 10.00th=[11731], 20.00th=[12911], | 30.00th=[13829], 40.00th=[15139], 50.00th=[16450], 60.00th=[17695], | 70.00th=[19006], 80.00th=[21103], 90.00th=[25035], 95.00th=[32113], | 99.00th=[46400], 99.50th=[51119], 99.90th=[57410], 99.95th=[57410], | 99.99th=[57410] bw ( KiB/s): min= 104, max= 256, per=25.58%, avg=194.12, stdev=50.53, samples=16 iops : min= 26, max= 64, avg=48.50, stdev=12.66, samples=16 lat (usec) : 1000=2.73% lat (msec) : 2=31.38%, 4=7.29%, 10=5.34%, 20=38.28%, 50=14.45% lat (msec) : 100=0.52% cpu : usr=0.10%, sys=1.93%, ctx=824, 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=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=122378: Tue Oct 7 09:30:41 2025 read: IOPS=48, BW=194KiB/s (199kB/s)(1564KiB/8043msec) clat (usec): min=819, max=32540, avg=2458.68, stdev=2650.37 lat (usec): min=819, max=32540, avg=2459.50, stdev=2650.41 clat percentiles (usec): | 1.00th=[ 881], 5.00th=[ 988], 10.00th=[ 1045], 20.00th=[ 1172], | 30.00th=[ 1287], 40.00th=[ 1434], 50.00th=[ 1631], 60.00th=[ 1811], | 70.00th=[ 2073], 80.00th=[ 2671], 90.00th=[ 5276], 95.00th=[ 7635], | 99.00th=[11994], 99.50th=[15401], 99.90th=[32637], 99.95th=[32637], | 99.99th=[32637] bw ( KiB/s): min= 88, max= 384, per=27.67%, avg=199.53, stdev=100.07, samples=15 iops : min= 22, max= 96, avg=49.87, stdev=25.03, samples=15 write: IOPS=46, BW=187KiB/s (192kB/s)(1508KiB/8043msec); 0 zone resets clat (usec): min=8911, max=54195, avg=18756.91, stdev=7183.82 lat (usec): min=8911, max=54196, avg=18757.89, stdev=7183.91 clat percentiles (usec): | 1.00th=[ 9372], 5.00th=[11207], 10.00th=[11731], 20.00th=[12911], | 30.00th=[14222], 40.00th=[15795], 50.00th=[16909], 60.00th=[18744], | 70.00th=[20579], 80.00th=[22938], 90.00th=[29492], 95.00th=[32637], | 99.00th=[45351], 99.50th=[49546], 99.90th=[54264], 99.95th=[54264], | 99.99th=[54264] bw ( KiB/s): min= 120, max= 240, per=24.64%, avg=187.00, stdev=44.33, samples=15 iops : min= 30, max= 60, avg=46.73, stdev=11.10, samples=15 lat (usec) : 1000=3.39% lat (msec) : 2=30.86%, 4=10.16%, 10=6.38%, 20=33.07%, 50=16.02% lat (msec) : 100=0.13% cpu : usr=0.11%, sys=1.99%, ctx=812, 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=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=122379: Tue Oct 7 09:30:41 2025 read: IOPS=45, BW=184KiB/s (188kB/s)(1508KiB/8210msec) clat (usec): min=831, max=42556, avg=2929.04, stdev=4302.85 lat (usec): min=831, max=42557, avg=2929.69, stdev=4302.86 clat percentiles (usec): | 1.00th=[ 889], 5.00th=[ 963], 10.00th=[ 1037], 20.00th=[ 1188], | 30.00th=[ 1319], 40.00th=[ 1434], 50.00th=[ 1647], 60.00th=[ 1860], | 70.00th=[ 2147], 80.00th=[ 2769], 90.00th=[ 5342], 95.00th=[10290], | 99.00th=[24773], 99.50th=[33817], 99.90th=[42730], 99.95th=[42730], | 99.99th=[42730] bw ( KiB/s): min= 104, max= 320, per=25.34%, avg=182.69, stdev=60.22, samples=16 iops : min= 26, max= 80, avg=45.62, stdev=15.11, samples=16 write: IOPS=47, BW=190KiB/s (195kB/s)(1564KiB/8210msec); 0 zone resets clat (usec): min=9269, max=54621, avg=18150.20, stdev=6521.56 lat (usec): min=9271, max=54621, avg=18151.24, stdev=6521.53 clat percentiles (usec): | 1.00th=[10028], 5.00th=[11207], 10.00th=[11731], 20.00th=[12780], | 30.00th=[14091], 40.00th=[15270], 50.00th=[17171], 60.00th=[18482], | 70.00th=[20055], 80.00th=[21890], 90.00th=[25560], 95.00th=[30016], | 99.00th=[45876], 99.50th=[52167], 99.90th=[54789], 99.95th=[54789], | 99.99th=[54789] bw ( KiB/s): min= 80, max= 240, per=25.10%, avg=190.50, stdev=48.37, samples=16 iops : min= 20, max= 60, avg=47.62, stdev=12.09, samples=16 lat (usec) : 1000=4.04% lat (msec) : 2=27.99%, 4=9.64%, 10=5.34%, 20=36.46%, 50=16.15% lat (msec) : 100=0.39% cpu : usr=0.17%, sys=1.86%, ctx=811, 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=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=722KiB/s (739kB/s), 173KiB/s-194KiB/s (177kB/s-199kB/s), io=5988KiB (6132kB), run=8043-8297msec WRITE: bw=759KiB/s (778kB/s), 187KiB/s-197KiB/s (192kB/s-202kB/s), io=6300KiB (6451kB), run=8043-8297msec