== sanity test 398c: run fio to test AIO ================= 15:34:27 (1775849667) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.508946 s, 82.4 MB/s osc.lustre-OST0000-osc-ffff944cec62b000.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=155967: Fri Apr 10 15:37:20 2026 write: IOPS=15, BW=62.8KiB/s (64.3kB/s)(10.0MiB/163065msec); 0 zone resets slat (usec): min=51, max=11342, avg=289.92, stdev=826.17 clat (msec): min=173, max=1828, avg=1018.06, stdev=259.95 lat (msec): min=173, max=1828, avg=1018.35, stdev=259.96 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 642], 10.00th=[ 743], 20.00th=[ 827], | 30.00th=[ 885], 40.00th=[ 936], 50.00th=[ 1003], 60.00th=[ 1083], | 70.00th=[ 1150], 80.00th=[ 1234], 90.00th=[ 1368], 95.00th=[ 1469], | 99.00th=[ 1603], 99.50th=[ 1620], 99.90th=[ 1670], 99.95th=[ 1703], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 231, per=24.94%, avg=62.60, stdev=31.19, samples=321 iops : min= 1, max= 57, avg=15.20, stdev= 7.82, samples=321 lat (msec) : 250=1.33%, 500=1.91%, 750=7.30%, 1000=38.09%, 2000=51.37% cpu : usr=0.04%, sys=0.26%, ctx=2077, 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=155968: Fri Apr 10 15:37:20 2026 write: IOPS=15, BW=62.8KiB/s (64.3kB/s)(10.0MiB/162999msec); 0 zone resets slat (usec): min=51, max=10249, avg=245.71, stdev=604.30 clat (msec): min=178, max=1790, avg=1017.60, stdev=257.99 lat (msec): min=178, max=1790, avg=1017.85, stdev=258.03 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 651], 10.00th=[ 743], 20.00th=[ 818], | 30.00th=[ 885], 40.00th=[ 944], 50.00th=[ 1011], 60.00th=[ 1070], | 70.00th=[ 1150], 80.00th=[ 1234], 90.00th=[ 1351], 95.00th=[ 1452], | 99.00th=[ 1603], 99.50th=[ 1653], 99.90th=[ 1737], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 230, per=24.76%, avg=62.14, stdev=28.50, samples=324 iops : min= 1, max= 57, avg=15.09, stdev= 7.14, samples=324 lat (msec) : 250=1.25%, 500=1.91%, 750=8.16%, 1000=37.89%, 2000=50.78% cpu : usr=0.04%, sys=0.24%, ctx=2175, 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=155969: Fri Apr 10 15:37:20 2026 write: IOPS=15, BW=62.8KiB/s (64.3kB/s)(10.0MiB/162995msec); 0 zone resets slat (usec): min=40, max=18411, avg=271.63, stdev=804.97 clat (msec): min=167, max=1835, avg=1017.32, stdev=264.73 lat (msec): min=167, max=1835, avg=1017.59, stdev=264.74 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 642], 10.00th=[ 735], 20.00th=[ 827], | 30.00th=[ 894], 40.00th=[ 944], 50.00th=[ 1011], 60.00th=[ 1070], | 70.00th=[ 1150], 80.00th=[ 1234], 90.00th=[ 1351], 95.00th=[ 1435], | 99.00th=[ 1636], 99.50th=[ 1703], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1838] bw ( KiB/s): min= 7, max= 255, per=25.23%, avg=63.34, stdev=30.02, samples=318 iops : min= 1, max= 63, avg=15.39, stdev= 7.52, samples=318 lat (msec) : 250=1.25%, 500=2.58%, 750=7.70%, 1000=36.84%, 2000=51.64% cpu : usr=0.04%, sys=0.27%, ctx=2283, 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=155970: Fri Apr 10 15:37:20 2026 write: IOPS=15, BW=62.9KiB/s (64.4kB/s)(10.0MiB/162905msec); 0 zone resets slat (usec): min=39, max=18269, avg=294.54, stdev=848.23 clat (msec): min=87, max=1866, avg=1017.30, stdev=263.95 lat (msec): min=87, max=1866, avg=1017.60, stdev=263.92 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 609], 10.00th=[ 743], 20.00th=[ 827], | 30.00th=[ 885], 40.00th=[ 944], 50.00th=[ 1003], 60.00th=[ 1062], | 70.00th=[ 1133], 80.00th=[ 1234], 90.00th=[ 1351], 95.00th=[ 1452], | 99.00th=[ 1620], 99.50th=[ 1687], 99.90th=[ 1804], 99.95th=[ 1821], | 99.99th=[ 1871] bw ( KiB/s): min= 7, max= 237, per=25.23%, avg=63.32, stdev=27.03, samples=318 iops : min= 1, max= 59, avg=15.38, stdev= 6.79, samples=318 lat (msec) : 100=0.04%, 250=1.25%, 500=2.27%, 750=6.72%, 1000=38.87% lat (msec) : 2000=50.86% cpu : usr=0.04%, sys=0.26%, ctx=2268, majf=0, minf=10 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=251KiB/s (257kB/s), 62.8KiB/s-62.9KiB/s (64.3kB/s-64.4kB/s), io=40.0MiB (41.9MB), run=162905-163065msec 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=156003: Fri Apr 10 15:39:21 2026 read: IOPS=11, BW=45.2KiB/s (46.3kB/s)(5048KiB/111643msec) slat (usec): min=64, max=61049, avg=13843.96, stdev=7904.63 clat (msec): min=47, max=1101, avg=425.97, stdev=119.95 lat (msec): min=64, max=1108, avg=439.82, stdev=121.74 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 264], 10.00th=[ 296], 20.00th=[ 330], | 30.00th=[ 359], 40.00th=[ 384], 50.00th=[ 409], 60.00th=[ 439], | 70.00th=[ 468], 80.00th=[ 518], 90.00th=[ 584], 95.00th=[ 642], | 99.00th=[ 785], 99.50th=[ 852], 99.90th=[ 919], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 96, per=25.23%, avg=45.16, stdev=20.83, samples=219 iops : min= 1, max= 24, avg=10.80, stdev= 5.25, samples=219 write: IOPS=11, BW=46.5KiB/s (47.6kB/s)(5192KiB/111643msec); 0 zone resets slat (usec): min=45, max=17959, avg=372.41, stdev=959.49 clat (msec): min=153, max=2054, avg=947.13, stdev=279.29 lat (msec): min=153, max=2054, avg=947.50, stdev=279.26 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 550], 10.00th=[ 617], 20.00th=[ 718], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1070], 80.00th=[ 1150], 90.00th=[ 1318], 95.00th=[ 1469], | 99.00th=[ 1720], 99.50th=[ 1804], 99.90th=[ 2022], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 119, per=25.05%, avg=46.60, stdev=20.09, samples=218 iops : min= 1, max= 29, avg=11.16, stdev= 5.03, samples=218 lat (msec) : 50=0.04%, 100=0.12%, 250=1.84%, 500=37.46%, 750=21.99% lat (msec) : 1000=18.79%, 2000=19.61%, >=2000=0.16% cpu : usr=0.08%, sys=0.62%, ctx=4985, majf=0, minf=12 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=156004: Fri Apr 10 15:39:21 2026 read: IOPS=11, BW=44.6KiB/s (45.7kB/s)(4976KiB/111507msec) slat (usec): min=2193, max=53947, avg=13865.13, stdev=7724.68 clat (msec): min=14, max=1148, avg=425.78, stdev=120.62 lat (msec): min=21, max=1157, avg=439.65, stdev=121.87 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 266], 10.00th=[ 300], 20.00th=[ 334], | 30.00th=[ 368], 40.00th=[ 393], 50.00th=[ 414], 60.00th=[ 443], | 70.00th=[ 472], 80.00th=[ 510], 90.00th=[ 575], 95.00th=[ 625], | 99.00th=[ 760], 99.50th=[ 877], 99.90th=[ 1133], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 128, per=24.73%, avg=44.26, stdev=21.14, samples=220 iops : min= 1, max= 32, avg=10.57, stdev= 5.35, samples=220 write: IOPS=11, BW=47.2KiB/s (48.3kB/s)(5264KiB/111507msec); 0 zone resets slat (usec): min=57, max=18560, avg=363.27, stdev=1055.94 clat (msec): min=129, max=1993, avg=937.53, stdev=279.43 lat (msec): min=130, max=1994, avg=937.89, stdev=279.42 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 527], 10.00th=[ 609], 20.00th=[ 701], | 30.00th=[ 768], 40.00th=[ 844], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1062], 80.00th=[ 1150], 90.00th=[ 1284], 95.00th=[ 1469], | 99.00th=[ 1737], 99.50th=[ 1821], 99.90th=[ 1888], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 120, per=25.33%, avg=47.12, stdev=20.81, samples=219 iops : min= 1, max= 30, avg=11.29, stdev= 5.21, samples=219 lat (msec) : 20=0.12%, 50=0.12%, 100=0.27%, 250=1.21%, 500=37.97% lat (msec) : 750=22.30%, 1000=18.24%, 2000=19.77% cpu : usr=0.09%, sys=0.63%, ctx=5043, 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=156005: Fri Apr 10 15:39:21 2026 read: IOPS=11, BW=44.6KiB/s (45.7kB/s)(4984KiB/111731msec) slat (usec): min=2621, max=55515, avg=14079.53, stdev=7590.32 clat (msec): min=15, max=1000, avg=427.94, stdev=115.00 lat (msec): min=26, max=1026, avg=442.02, stdev=116.43 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 275], 10.00th=[ 305], 20.00th=[ 338], | 30.00th=[ 363], 40.00th=[ 388], 50.00th=[ 414], 60.00th=[ 439], | 70.00th=[ 468], 80.00th=[ 518], 90.00th=[ 575], 95.00th=[ 634], | 99.00th=[ 743], 99.50th=[ 835], 99.90th=[ 995], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 128, per=25.19%, avg=45.10, stdev=22.82, samples=217 iops : min= 1, max= 32, avg=10.78, stdev= 5.72, samples=217 write: IOPS=11, BW=47.0KiB/s (48.2kB/s)(5256KiB/111731msec); 0 zone resets slat (usec): min=56, max=14264, avg=357.99, stdev=845.61 clat (msec): min=245, max=2121, avg=938.67, stdev=280.31 lat (msec): min=245, max=2121, avg=939.03, stdev=280.31 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 523], 10.00th=[ 592], 20.00th=[ 701], | 30.00th=[ 776], 40.00th=[ 844], 50.00th=[ 919], 60.00th=[ 995], | 70.00th=[ 1062], 80.00th=[ 1133], 90.00th=[ 1284], 95.00th=[ 1469], | 99.00th=[ 1737], 99.50th=[ 1787], 99.90th=[ 2005], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 7, max= 119, per=24.87%, avg=46.26, stdev=20.72, samples=222 iops : min= 1, max= 29, avg=11.07, stdev= 5.19, samples=222 lat (msec) : 20=0.08%, 100=0.12%, 250=1.17%, 500=37.85%, 750=22.42% lat (msec) : 1000=18.05%, 2000=20.20%, >=2000=0.12% cpu : usr=0.07%, sys=0.63%, ctx=4863, 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=156006: Fri Apr 10 15:39:21 2026 read: IOPS=11, BW=45.2KiB/s (46.3kB/s)(5060KiB/111841msec) slat (usec): min=2820, max=60031, avg=14160.15, stdev=7877.87 clat (msec): min=16, max=866, avg=427.96, stdev=109.85 lat (msec): min=30, max=886, avg=442.13, stdev=111.67 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 275], 10.00th=[ 305], 20.00th=[ 338], | 30.00th=[ 363], 40.00th=[ 388], 50.00th=[ 418], 60.00th=[ 443], | 70.00th=[ 472], 80.00th=[ 514], 90.00th=[ 584], 95.00th=[ 634], | 99.00th=[ 709], 99.50th=[ 726], 99.90th=[ 860], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 127, per=25.35%, avg=45.38, stdev=22.14, samples=219 iops : min= 1, max= 31, avg=10.85, stdev= 5.55, samples=219 write: IOPS=11, BW=46.3KiB/s (47.4kB/s)(5180KiB/111841msec); 0 zone resets slat (usec): min=47, max=10452, avg=345.68, stdev=803.53 clat (msec): min=280, max=2062, avg=946.64, stdev=278.66 lat (msec): min=281, max=2062, avg=946.98, stdev=278.66 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 542], 10.00th=[ 617], 20.00th=[ 701], | 30.00th=[ 785], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 995], | 70.00th=[ 1070], 80.00th=[ 1133], 90.00th=[ 1301], 95.00th=[ 1469], | 99.00th=[ 1737], 99.50th=[ 1972], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 104, per=24.74%, avg=46.01, stdev=20.88, samples=220 iops : min= 1, max= 26, avg=11.01, stdev= 5.26, samples=220 lat (msec) : 20=0.04%, 50=0.12%, 100=0.04%, 250=1.02%, 500=38.20% lat (msec) : 750=23.05%, 1000=17.38%, 2000=19.92%, >=2000=0.23% cpu : usr=0.09%, sys=0.59%, ctx=4897, majf=0, minf=13 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), 44.6KiB/s-45.2KiB/s (45.7kB/s-46.3kB/s), io=19.6MiB (20.5MB), run=111507-111841msec WRITE: bw=187KiB/s (191kB/s), 46.3KiB/s-47.2KiB/s (47.4kB/s-48.3kB/s), io=20.4MiB (21.4MB), run=111507-111841msec 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=156026: Fri Apr 10 15:39:32 2026 read: IOPS=1, BW=73.1MiB/s (76.7MB/s)(40.0MiB/547msec) slat (nsec): min=34207k, max=34207k, avg=34206698.00, stdev= 0.00 clat (nsec): min=496374k, max=496374k, avg=496374342.00, stdev= 0.00 lat (nsec): min=530585k, max=530585k, avg=530585458.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.20%, ctx=44, majf=0, minf=8 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=73.1MiB/s (76.7MB/s), 73.1MiB/s-73.1MiB/s (76.7MB/s-76.7MB/s), io=40.0MiB (41.9MB), run=547-547msec 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