== sanity test 398c: run fio to test AIO ================= 10:33:25 (1786804405) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.547532 s, 76.6 MB/s osc.lustre-OST0000-osc-ffff8fcd6bfd4800.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=145879: Sat Aug 15 10:36:05 2026 write: IOPS=17, BW=68.5KiB/s (70.1kB/s)(10.0MiB/149475msec); 0 zone resets slat (usec): min=48, max=13782, avg=273.66, stdev=767.63 clat (msec): min=165, max=2286, avg=933.52, stdev=279.63 lat (msec): min=166, max=2286, avg=933.80, stdev=279.62 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 575], 10.00th=[ 676], 20.00th=[ 751], | 30.00th=[ 802], 40.00th=[ 852], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1435], | 99.00th=[ 1720], 99.50th=[ 1972], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 383, per=25.25%, avg=68.68, stdev=35.98, samples=293 iops : min= 1, max= 95, avg=16.70, stdev= 9.00, samples=293 lat (msec) : 250=2.50%, 500=1.95%, 750=15.47%, 1000=44.41%, 2000=35.23% lat (msec) : >=2000=0.43% cpu : usr=0.04%, sys=0.30%, ctx=1686, 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=145880: Sat Aug 15 10:36:05 2026 write: IOPS=17, BW=68.3KiB/s (69.0kB/s)(10.0MiB/149843msec); 0 zone resets slat (usec): min=49, max=14481, avg=279.48, stdev=719.59 clat (msec): min=59, max=2266, avg=935.25, stdev=277.07 lat (msec): min=59, max=2266, avg=935.54, stdev=277.03 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 531], 10.00th=[ 667], 20.00th=[ 751], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 911], 60.00th=[ 961], | 70.00th=[ 1036], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1418], | 99.00th=[ 1720], 99.50th=[ 1854], 99.90th=[ 2022], 99.95th=[ 2140], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 255, per=25.16%, avg=68.44, stdev=32.65, samples=294 iops : min= 1, max= 63, avg=16.65, stdev= 8.20, samples=294 lat (msec) : 100=0.04%, 250=2.38%, 500=1.95%, 750=15.20%, 1000=46.17% lat (msec) : 2000=34.14%, >=2000=0.12% cpu : usr=0.04%, sys=0.32%, ctx=1872, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=145881: Sat Aug 15 10:36:05 2026 write: IOPS=17, BW=68.3KiB/s (69.9kB/s)(10.0MiB/149952msec); 0 zone resets slat (usec): min=48, max=19728, avg=336.37, stdev=1138.29 clat (msec): min=171, max=2325, avg=935.75, stdev=273.87 lat (msec): min=171, max=2325, avg=936.09, stdev=273.88 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 592], 10.00th=[ 684], 20.00th=[ 751], | 30.00th=[ 810], 40.00th=[ 852], 50.00th=[ 902], 60.00th=[ 969], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1284], 95.00th=[ 1435], | 99.00th=[ 1754], 99.50th=[ 1854], 99.90th=[ 2299], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 255, per=24.83%, avg=67.53, stdev=33.48, samples=298 iops : min= 1, max= 63, avg=16.42, stdev= 8.38, samples=298 lat (msec) : 250=2.11%, 500=1.84%, 750=15.78%, 1000=45.43%, 2000=34.73% lat (msec) : >=2000=0.12% cpu : usr=0.05%, sys=0.31%, ctx=1796, 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=145882: Sat Aug 15 10:36:05 2026 write: IOPS=17, BW=68.2KiB/s (69.8kB/s)(10.0MiB/150143msec); 0 zone resets slat (usec): min=44, max=16538, avg=300.17, stdev=844.92 clat (msec): min=158, max=2273, avg=936.93, stdev=277.12 lat (msec): min=158, max=2273, avg=937.23, stdev=277.14 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 558], 10.00th=[ 676], 20.00th=[ 751], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1036], 80.00th=[ 1133], 90.00th=[ 1267], 95.00th=[ 1418], | 99.00th=[ 1754], 99.50th=[ 1921], 99.90th=[ 2140], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 239, per=24.91%, avg=67.76, stdev=30.55, samples=297 iops : min= 1, max= 59, avg=16.48, stdev= 7.66, samples=297 lat (msec) : 250=1.72%, 500=2.54%, 750=16.13%, 1000=44.22%, 2000=35.04% lat (msec) : >=2000=0.35% cpu : usr=0.05%, sys=0.32%, ctx=2111, 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=273KiB/s (279kB/s), 68.2KiB/s-68.5KiB/s (69.8kB/s-70.1kB/s), io=40.0MiB (41.9MB), run=149475-150143msec 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=145914: Sat Aug 15 10:37:59 2026 read: IOPS=12, BW=49.2KiB/s (50.4kB/s)(5048KiB/102624msec) slat (usec): min=2875, max=62975, avg=13990.02, stdev=8237.29 clat (msec): min=20, max=911, avg=395.71, stdev=117.83 lat (msec): min=30, max=926, avg=409.71, stdev=119.63 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 251], 10.00th=[ 279], 20.00th=[ 309], | 30.00th=[ 334], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 405], | 70.00th=[ 435], 80.00th=[ 468], 90.00th=[ 531], 95.00th=[ 617], | 99.00th=[ 793], 99.50th=[ 810], 99.90th=[ 894], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 111, per=24.91%, avg=48.57, stdev=23.02, samples=204 iops : min= 1, max= 27, avg=11.67, stdev= 5.79, samples=204 write: IOPS=12, BW=50.6KiB/s (51.8kB/s)(5192KiB/102624msec); 0 zone resets slat (usec): min=49, max=15827, avg=367.60, stdev=909.08 clat (msec): min=312, max=2137, avg=863.54, stdev=285.42 lat (msec): min=312, max=2137, avg=863.91, stdev=285.44 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 485], 10.00th=[ 550], 20.00th=[ 634], | 30.00th=[ 701], 40.00th=[ 760], 50.00th=[ 810], 60.00th=[ 885], | 70.00th=[ 961], 80.00th=[ 1062], 90.00th=[ 1217], 95.00th=[ 1368], | 99.00th=[ 1921], 99.50th=[ 1989], 99.90th=[ 2123], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 7, max= 119, per=24.85%, avg=50.45, stdev=20.19, samples=202 iops : min= 1, max= 29, avg=12.14, stdev= 5.08, samples=202 lat (msec) : 50=0.20%, 100=0.31%, 250=1.95%, 500=43.20%, 750=21.56% lat (msec) : 1000=20.20%, 2000=12.42%, >=2000=0.16% cpu : usr=0.09%, sys=0.70%, ctx=5022, majf=0, minf=11 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=145915: Sat Aug 15 10:37:59 2026 read: IOPS=12, BW=48.5KiB/s (49.6kB/s)(4976KiB/102631msec) slat (usec): min=69, max=56037, avg=13767.68, stdev=7650.83 clat (msec): min=16, max=959, avg=396.58, stdev=118.15 lat (msec): min=27, max=998, avg=410.36, stdev=119.93 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 251], 10.00th=[ 279], 20.00th=[ 317], | 30.00th=[ 338], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 405], | 70.00th=[ 435], 80.00th=[ 460], 90.00th=[ 535], 95.00th=[ 617], | 99.00th=[ 793], 99.50th=[ 818], 99.90th=[ 927], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 127, per=24.91%, avg=48.57, stdev=23.52, samples=201 iops : min= 1, max= 31, avg=11.67, stdev= 5.91, samples=201 write: IOPS=12, BW=51.3KiB/s (52.5kB/s)(5264KiB/102631msec); 0 zone resets slat (usec): min=56, max=19402, avg=419.04, stdev=1269.73 clat (msec): min=245, max=2113, avg=858.58, stdev=290.82 lat (msec): min=245, max=2113, avg=859.00, stdev=290.85 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 485], 10.00th=[ 535], 20.00th=[ 625], | 30.00th=[ 693], 40.00th=[ 760], 50.00th=[ 827], 60.00th=[ 894], | 70.00th=[ 969], 80.00th=[ 1053], 90.00th=[ 1183], 95.00th=[ 1368], | 99.00th=[ 1888], 99.50th=[ 1972], 99.90th=[ 2089], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 7, max= 135, per=25.18%, avg=51.11, stdev=22.52, samples=202 iops : min= 1, max= 33, avg=12.31, stdev= 5.66, samples=202 lat (msec) : 20=0.04%, 50=0.16%, 100=0.31%, 250=1.95%, 500=42.15% lat (msec) : 750=23.32%, 1000=18.63%, 2000=13.20%, >=2000=0.23% cpu : usr=0.09%, sys=0.68%, ctx=4810, 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=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=145916: Sat Aug 15 10:37:59 2026 read: IOPS=12, BW=48.6KiB/s (49.7kB/s)(4984KiB/102619msec) slat (usec): min=3140, max=69615, avg=13873.21, stdev=7923.82 clat (msec): min=15, max=953, avg=396.11, stdev=117.99 lat (msec): min=27, max=959, avg=409.99, stdev=119.58 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 249], 10.00th=[ 275], 20.00th=[ 309], | 30.00th=[ 334], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 405], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 542], 95.00th=[ 625], | 99.00th=[ 768], 99.50th=[ 810], 99.90th=[ 911], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 112, per=24.81%, avg=48.39, stdev=22.88, samples=203 iops : min= 1, max= 28, avg=11.63, stdev= 5.75, samples=203 write: IOPS=12, BW=51.2KiB/s (52.4kB/s)(5256KiB/102619msec); 0 zone resets slat (usec): min=57, max=14548, avg=368.88, stdev=955.99 clat (msec): min=287, max=2112, avg=857.76, stdev=283.37 lat (msec): min=287, max=2112, avg=858.13, stdev=283.41 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 489], 10.00th=[ 558], 20.00th=[ 634], | 30.00th=[ 701], 40.00th=[ 760], 50.00th=[ 810], 60.00th=[ 885], | 70.00th=[ 961], 80.00th=[ 1045], 90.00th=[ 1183], 95.00th=[ 1368], | 99.00th=[ 1871], 99.50th=[ 1989], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 8, max= 136, per=24.81%, avg=50.37, stdev=21.89, samples=204 iops : min= 2, max= 34, avg=12.12, stdev= 5.47, samples=204 lat (msec) : 20=0.04%, 50=0.20%, 100=0.27%, 250=2.03%, 500=41.48% lat (msec) : 750=23.95%, 1000=19.49%, 2000=12.30%, >=2000=0.23% cpu : usr=0.09%, sys=0.69%, ctx=4607, majf=0, minf=11 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=145917: Sat Aug 15 10:37:59 2026 read: IOPS=12, BW=49.4KiB/s (50.6kB/s)(5060KiB/102446msec) slat (usec): min=2876, max=72157, avg=13906.64, stdev=8087.59 clat (msec): min=28, max=1043, avg=398.28, stdev=123.20 lat (msec): min=40, max=1060, avg=412.19, stdev=125.29 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 249], 10.00th=[ 275], 20.00th=[ 309], | 30.00th=[ 334], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 401], | 70.00th=[ 435], 80.00th=[ 468], 90.00th=[ 535], 95.00th=[ 651], | 99.00th=[ 802], 99.50th=[ 869], 99.90th=[ 1036], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 111, per=25.63%, avg=49.98, stdev=21.43, samples=199 iops : min= 1, max= 27, avg=12.02, stdev= 5.38, samples=199 write: IOPS=12, BW=50.6KiB/s (51.8kB/s)(5180KiB/102446msec); 0 zone resets slat (usec): min=50, max=17999, avg=321.82, stdev=747.45 clat (msec): min=307, max=2159, avg=859.64, stdev=285.68 lat (msec): min=307, max=2159, avg=859.96, stdev=285.70 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 502], 10.00th=[ 558], 20.00th=[ 625], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 818], 60.00th=[ 885], | 70.00th=[ 961], 80.00th=[ 1045], 90.00th=[ 1200], 95.00th=[ 1385], | 99.00th=[ 1921], 99.50th=[ 2005], 99.90th=[ 2140], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 111, per=24.90%, avg=50.54, stdev=22.43, samples=201 iops : min= 1, max= 27, avg=12.16, stdev= 5.63, samples=201 lat (msec) : 50=0.20%, 100=0.16%, 250=2.23%, 500=41.99%, 750=23.67% lat (msec) : 1000=18.87%, 2000=12.58%, >=2000=0.31% cpu : usr=0.09%, sys=0.72%, ctx=4815, 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=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=196KiB/s (200kB/s), 48.5KiB/s-49.4KiB/s (49.6kB/s-50.6kB/s), io=19.6MiB (20.5MB), run=102446-102631msec WRITE: bw=204KiB/s (208kB/s), 50.6KiB/s-51.3KiB/s (51.8kB/s-52.5kB/s), io=20.4MiB (21.4MB), run=102446-102631msec 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=145935: Sat Aug 15 10:38:09 2026 read: IOPS=2, BW=84.0MiB/s (88.1MB/s)(40.0MiB/476msec) slat (nsec): min=64615k, max=64615k, avg=64615026.00, stdev= 0.00 clat (nsec): min=394965k, max=394965k, avg=394965463.00, stdev= 0.00 lat (nsec): min=459585k, max=459585k, avg=459585097.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.95%, ctx=7, 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=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=84.0MiB/s (88.1MB/s), 84.0MiB/s-84.0MiB/s (88.1MB/s-88.1MB/s), io=40.0MiB (41.9MB), run=476-476msec 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