== sanity test 398c: run fio to test AIO ================= 13:57:45 (1787853465) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.499268 s, 84.0 MB/s osc.lustre-OST0000-osc-ffffa09d2c3b8000.rpc_stats=clear writing 40M to OST0 by fio with 4 jobs... rand-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16 ... fio-3.19 Starting 4 processes rand-write: (groupid=0, jobs=1): err= 0: pid=145023: Thu Aug 27 14:01:02 2026 write: IOPS=14, BW=56.3KiB/s (57.7kB/s)(10.0MiB/181846msec); 0 zone resets slat (usec): min=22, max=41216, avg=231.31, stdev=1313.35 clat (msec): min=362, max=2043, avg=1134.26, stdev=270.63 lat (msec): min=363, max=2043, avg=1134.50, stdev=270.65 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 718], 10.00th=[ 802], 20.00th=[ 902], | 30.00th=[ 995], 40.00th=[ 1053], 50.00th=[ 1116], 60.00th=[ 1200], | 70.00th=[ 1267], 80.00th=[ 1351], 90.00th=[ 1485], 95.00th=[ 1586], | 99.00th=[ 1838], 99.50th=[ 1905], 99.90th=[ 2005], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 159, per=25.79%, avg=58.03, stdev=29.12, samples=347 iops : min= 1, max= 39, avg=14.05, stdev= 7.36, samples=347 lat (msec) : 500=1.09%, 750=5.20%, 1000=24.45%, 2000=69.10%, >=2000=0.16% cpu : usr=0.04%, sys=0.20%, ctx=1629, majf=0, minf=8 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=145024: Thu Aug 27 14:01:02 2026 write: IOPS=14, BW=56.3KiB/s (57.6kB/s)(10.0MiB/181899msec); 0 zone resets slat (usec): min=23, max=25368, avg=244.36, stdev=1107.44 clat (msec): min=284, max=1985, avg=1135.91, stdev=279.26 lat (msec): min=285, max=1985, avg=1136.16, stdev=279.30 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 693], 10.00th=[ 785], 20.00th=[ 894], | 30.00th=[ 995], 40.00th=[ 1070], 50.00th=[ 1133], 60.00th=[ 1200], | 70.00th=[ 1284], 80.00th=[ 1351], 90.00th=[ 1485], 95.00th=[ 1603], | 99.00th=[ 1804], 99.50th=[ 1871], 99.90th=[ 1972], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 128, per=25.85%, avg=58.17, stdev=28.52, samples=346 iops : min= 1, max= 32, avg=14.09, stdev= 7.18, samples=346 lat (msec) : 500=1.09%, 750=7.42%, 1000=21.91%, 2000=69.57% cpu : usr=0.04%, sys=0.20%, ctx=1635, majf=0, minf=9 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=145025: Thu Aug 27 14:01:02 2026 write: IOPS=14, BW=56.4KiB/s (57.8kB/s)(10.0MiB/181535msec); 0 zone resets slat (usec): min=22, max=19843, avg=218.01, stdev=907.00 clat (msec): min=311, max=1994, avg=1132.85, stdev=273.23 lat (msec): min=316, max=1995, avg=1133.07, stdev=273.25 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 667], 10.00th=[ 793], 20.00th=[ 911], | 30.00th=[ 995], 40.00th=[ 1070], 50.00th=[ 1133], 60.00th=[ 1200], | 70.00th=[ 1267], 80.00th=[ 1351], 90.00th=[ 1452], 95.00th=[ 1586], | 99.00th=[ 1838], 99.50th=[ 1938], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 176, per=25.64%, avg=57.70, stdev=32.77, samples=349 iops : min= 1, max= 44, avg=13.96, stdev= 8.25, samples=349 lat (msec) : 500=0.82%, 750=6.68%, 1000=22.81%, 2000=69.69% cpu : usr=0.04%, sys=0.18%, ctx=1623, majf=0, minf=8 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=145026: Thu Aug 27 14:01:02 2026 write: IOPS=14, BW=56.3KiB/s (57.6kB/s)(10.0MiB/181889msec); 0 zone resets slat (usec): min=23, max=23355, avg=257.53, stdev=1206.54 clat (msec): min=274, max=1976, avg=1134.55, stdev=271.24 lat (msec): min=275, max=1976, avg=1134.81, stdev=271.31 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 701], 10.00th=[ 776], 20.00th=[ 902], | 30.00th=[ 986], 40.00th=[ 1062], 50.00th=[ 1133], 60.00th=[ 1200], | 70.00th=[ 1284], 80.00th=[ 1368], 90.00th=[ 1502], 95.00th=[ 1586], | 99.00th=[ 1754], 99.50th=[ 1804], 99.90th=[ 1938], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min= 7, max= 128, per=25.56%, avg=57.52, stdev=27.92, samples=350 iops : min= 1, max= 32, avg=13.92, stdev= 7.03, samples=350 lat (msec) : 500=0.70%, 750=7.85%, 1000=22.77%, 2000=68.67% cpu : usr=0.04%, sys=0.19%, ctx=1465, majf=0, minf=9 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 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): WRITE: bw=225KiB/s (231kB/s), 56.3KiB/s-56.4KiB/s (57.6kB/s-57.8kB/s), io=40.0MiB (41.9MB), run=181535-181899msec mix rw 40M to OST0 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145072: Thu Aug 27 14:03:03 2026 read: IOPS=11, BW=45.4KiB/s (46.5kB/s)(5048KiB/111201msec) slat (usec): min=36, max=58837, avg=14868.21, stdev=8451.84 clat (msec): min=6, max=1083, avg=444.19, stdev=122.61 lat (msec): min=11, max=1110, avg=459.07, stdev=124.14 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 288], 10.00th=[ 321], 20.00th=[ 355], | 30.00th=[ 384], 40.00th=[ 409], 50.00th=[ 435], 60.00th=[ 456], | 70.00th=[ 485], 80.00th=[ 523], 90.00th=[ 592], 95.00th=[ 651], | 99.00th=[ 852], 99.50th=[ 885], 99.90th=[ 1070], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 119, per=25.22%, avg=45.14, stdev=21.40, samples=219 iops : min= 1, max= 29, avg=10.77, stdev= 5.39, samples=219 write: IOPS=11, BW=46.7KiB/s (47.8kB/s)(5192KiB/111201msec); 0 zone resets slat (usec): min=23, max=19887, avg=275.11, stdev=1057.73 clat (msec): min=103, max=1677, avg=923.11, stdev=245.75 lat (msec): min=104, max=1677, avg=923.38, stdev=245.75 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 535], 10.00th=[ 634], 20.00th=[ 718], | 30.00th=[ 785], 40.00th=[ 852], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1053], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1334], | 99.00th=[ 1519], 99.50th=[ 1552], 99.90th=[ 1636], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 7, max= 103, per=24.79%, avg=46.12, stdev=20.14, samples=220 iops : min= 1, max= 25, avg=11.02, stdev= 5.04, samples=220 lat (msec) : 10=0.04%, 20=0.04%, 50=0.20%, 100=0.35%, 250=0.74% lat (msec) : 500=36.88%, 750=22.62%, 1000=20.62%, 2000=18.52% cpu : usr=0.09%, sys=0.62%, ctx=4437, majf=0, minf=15 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1262,1298,0,0 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=145073: Thu Aug 27 14:03:03 2026 read: IOPS=11, BW=44.4KiB/s (45.5kB/s)(4976KiB/111977msec) slat (usec): min=2708, max=71588, avg=14848.94, stdev=8313.31 clat (msec): min=13, max=1087, avg=441.72, stdev=113.84 lat (msec): min=23, max=1113, avg=456.57, stdev=115.34 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 292], 10.00th=[ 321], 20.00th=[ 355], | 30.00th=[ 380], 40.00th=[ 405], 50.00th=[ 426], 60.00th=[ 456], | 70.00th=[ 485], 80.00th=[ 523], 90.00th=[ 584], 95.00th=[ 634], | 99.00th=[ 785], 99.50th=[ 894], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 111, per=24.58%, avg=44.00, stdev=20.72, samples=220 iops : min= 1, max= 27, avg=10.49, stdev= 5.20, samples=220 write: IOPS=11, BW=47.0KiB/s (48.1kB/s)(5264KiB/111977msec); 0 zone resets slat (usec): min=29, max=18397, avg=249.90, stdev=848.63 clat (msec): min=233, max=1825, avg=926.91, stdev=240.71 lat (msec): min=233, max=1825, avg=927.17, stdev=240.71 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 550], 10.00th=[ 634], 20.00th=[ 726], | 30.00th=[ 785], 40.00th=[ 852], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1053], 80.00th=[ 1133], 90.00th=[ 1234], 95.00th=[ 1351], | 99.00th=[ 1536], 99.50th=[ 1586], 99.90th=[ 1670], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 127, per=25.20%, avg=46.86, stdev=19.97, samples=219 iops : min= 1, max= 31, avg=11.21, stdev= 4.99, samples=219 lat (msec) : 20=0.16%, 50=0.08%, 100=0.08%, 250=0.55%, 500=36.68% lat (msec) : 750=22.42%, 1000=21.13%, 2000=18.91% cpu : usr=0.08%, sys=0.56%, ctx=3954, majf=0, minf=16 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1244,1316,0,0 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=145074: Thu Aug 27 14:03:03 2026 read: IOPS=11, BW=44.5KiB/s (45.6kB/s)(4984KiB/111973msec) slat (usec): min=2660, max=52280, avg=15236.65, stdev=8324.64 clat (msec): min=30, max=1103, avg=444.51, stdev=112.55 lat (msec): min=39, max=1122, avg=459.76, stdev=113.55 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 292], 10.00th=[ 321], 20.00th=[ 359], | 30.00th=[ 384], 40.00th=[ 409], 50.00th=[ 435], 60.00th=[ 464], | 70.00th=[ 493], 80.00th=[ 527], 90.00th=[ 584], 95.00th=[ 625], | 99.00th=[ 760], 99.50th=[ 894], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 103, per=24.81%, avg=44.41, stdev=21.14, samples=220 iops : min= 1, max= 25, avg=10.60, stdev= 5.33, samples=220 write: IOPS=11, BW=46.9KiB/s (48.1kB/s)(5256KiB/111973msec); 0 zone resets slat (usec): min=34, max=17449, avg=245.65, stdev=863.44 clat (msec): min=129, max=1754, avg=925.07, stdev=244.53 lat (msec): min=129, max=1754, avg=925.32, stdev=244.49 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 531], 10.00th=[ 634], 20.00th=[ 735], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 902], 60.00th=[ 961], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1351], | 99.00th=[ 1519], 99.50th=[ 1603], 99.90th=[ 1670], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 111, per=24.73%, avg=45.99, stdev=20.81, samples=222 iops : min= 1, max= 27, avg=10.99, stdev= 5.23, samples=222 lat (msec) : 50=0.23%, 100=0.16%, 250=0.43%, 500=36.17%, 750=23.09% lat (msec) : 1000=21.91%, 2000=18.01% cpu : usr=0.09%, sys=0.56%, ctx=4602, majf=0, minf=14 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1246,1314,0,0 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=145075: Thu Aug 27 14:03:03 2026 read: IOPS=11, BW=45.3KiB/s (46.4kB/s)(5060KiB/111697msec) slat (usec): min=3268, max=71193, avg=14703.00, stdev=8115.52 clat (msec): min=10, max=1104, avg=443.26, stdev=112.88 lat (msec): min=29, max=1111, avg=457.97, stdev=114.02 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 288], 10.00th=[ 326], 20.00th=[ 355], | 30.00th=[ 384], 40.00th=[ 414], 50.00th=[ 439], 60.00th=[ 464], | 70.00th=[ 489], 80.00th=[ 523], 90.00th=[ 575], 95.00th=[ 625], | 99.00th=[ 760], 99.50th=[ 860], 99.90th=[ 1083], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 104, per=25.32%, avg=45.33, stdev=19.91, samples=219 iops : min= 1, max= 26, avg=10.83, stdev= 5.00, samples=219 write: IOPS=11, BW=46.4KiB/s (47.5kB/s)(5180KiB/111697msec); 0 zone resets slat (usec): min=31, max=24905, avg=263.99, stdev=1039.35 clat (msec): min=344, max=1678, avg=929.72, stdev=241.01 lat (msec): min=344, max=1678, avg=929.99, stdev=241.03 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 575], 10.00th=[ 634], 20.00th=[ 718], | 30.00th=[ 785], 40.00th=[ 852], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1351], | 99.00th=[ 1569], 99.50th=[ 1603], 99.90th=[ 1670], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 7, max= 104, per=24.63%, avg=45.81, stdev=19.18, samples=221 iops : min= 1, max= 26, avg=10.95, stdev= 4.85, samples=221 lat (msec) : 20=0.04%, 50=0.16%, 100=0.20%, 250=0.51%, 500=36.72% lat (msec) : 750=23.24%, 1000=21.25%, 2000=17.89% cpu : usr=0.10%, sys=0.57%, ctx=4562, majf=0, minf=16 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1265,1295,0,0 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=179KiB/s (184kB/s), 44.4KiB/s-45.4KiB/s (45.5kB/s-46.5kB/s), io=19.6MiB (20.5MB), run=111201-111977msec WRITE: bw=187KiB/s (191kB/s), 46.4KiB/s-47.0KiB/s (47.5kB/s-48.1kB/s), io=20.4MiB (21.4MB), run=111201-111977msec AIO with large block size 40M rand-rw: (g=0): rw=randrw, bs=(R) 40.0MiB-40.0MiB, (W) 40.0MiB-40.0MiB, (T) 40.0MiB-40.0MiB, ioengine=libaio, iodepth=16 fio-3.19 Starting 1 process rand-rw: (groupid=0, jobs=1): err= 0: pid=145096: Thu Aug 27 14:03:15 2026 read: IOPS=2, BW=97.6MiB/s (102MB/s)(40.0MiB/410msec) slat (nsec): min=34167k, max=34167k, avg=34167173.00, stdev= 0.00 clat (nsec): min=352267k, max=352267k, avg=352267325.00, stdev= 0.00 lat (nsec): min=386467k, max=386467k, avg=386467058.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.93%, ctx=43, majf=0, minf=9 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=1,0,0,0 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=97.6MiB/s (102MB/s), 97.6MiB/s-97.6MiB/s (102MB/s-102MB/s), io=40.0MiB (41.9MB), run=410-410msec debug=trace inode super iotrace malloc cache info ioctl neterror net warning buffs other dentry nettrace page dlmtrace error emerg ha rpctrace vfstrace reada mmap config console quota sec lfsck hsm snapshot layout