== sanity test 398c: run fio to test AIO ================= 09:50:46 (1787838646) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.467539 s, 89.7 MB/s osc.lustre-OST0000-osc-ffff9e96106b3000.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=145454: Thu Aug 27 09:53:09 2026 write: IOPS=19, BW=77.2KiB/s (79.0kB/s)(10.0MiB/132703msec); 0 zone resets slat (usec): min=22, max=16680, avg=191.24, stdev=799.97 clat (msec): min=199, max=1801, avg=827.88, stdev=221.01 lat (msec): min=199, max=1801, avg=828.07, stdev=221.06 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 414], 10.00th=[ 600], 20.00th=[ 684], | 30.00th=[ 735], 40.00th=[ 776], 50.00th=[ 827], 60.00th=[ 869], | 70.00th=[ 911], 80.00th=[ 978], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1385], 99.50th=[ 1519], 99.90th=[ 1787], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 254, per=25.13%, avg=77.41, stdev=33.69, samples=261 iops : min= 1, max= 63, avg=18.95, stdev= 8.47, samples=261 lat (msec) : 250=1.88%, 500=3.71%, 750=28.32%, 1000=48.75%, 2000=17.34% cpu : usr=0.05%, sys=0.26%, ctx=1914, 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=145455: Thu Aug 27 09:53:09 2026 write: IOPS=19, BW=77.2KiB/s (79.1kB/s)(10.0MiB/132589msec); 0 zone resets slat (usec): min=25, max=24255, avg=172.61, stdev=739.58 clat (msec): min=202, max=1814, avg=828.19, stdev=224.60 lat (msec): min=202, max=1814, avg=828.36, stdev=224.65 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 393], 10.00th=[ 584], 20.00th=[ 676], | 30.00th=[ 743], 40.00th=[ 785], 50.00th=[ 827], 60.00th=[ 877], | 70.00th=[ 919], 80.00th=[ 978], 90.00th=[ 1083], 95.00th=[ 1200], | 99.00th=[ 1435], 99.50th=[ 1502], 99.90th=[ 1787], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 16, max= 254, per=24.92%, avg=76.75, stdev=32.47, samples=263 iops : min= 4, max= 63, avg=18.79, stdev= 8.13, samples=263 lat (msec) : 250=2.11%, 500=3.71%, 750=26.37%, 1000=50.59%, 2000=17.23% cpu : usr=0.07%, sys=0.24%, ctx=1674, 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=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=145456: Thu Aug 27 09:53:09 2026 write: IOPS=19, BW=77.2KiB/s (79.1kB/s)(10.0MiB/132644msec); 0 zone resets slat (usec): min=23, max=35985, avg=201.29, stdev=1041.79 clat (msec): min=92, max=1785, avg=827.54, stdev=221.07 lat (msec): min=92, max=1785, avg=827.74, stdev=221.09 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 405], 10.00th=[ 600], 20.00th=[ 684], | 30.00th=[ 743], 40.00th=[ 785], 50.00th=[ 827], 60.00th=[ 869], | 70.00th=[ 919], 80.00th=[ 978], 90.00th=[ 1083], 95.00th=[ 1183], | 99.00th=[ 1385], 99.50th=[ 1670], 99.90th=[ 1703], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 246, per=24.93%, avg=76.78, stdev=31.07, samples=263 iops : min= 1, max= 61, avg=18.80, stdev= 7.78, samples=263 lat (msec) : 100=0.04%, 250=2.03%, 500=3.98%, 750=26.21%, 1000=50.23% lat (msec) : 2000=17.50% cpu : usr=0.05%, sys=0.26%, ctx=1970, 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=145457: Thu Aug 27 09:53:09 2026 write: IOPS=19, BW=77.2KiB/s (79.0kB/s)(10.0MiB/132705msec); 0 zone resets slat (usec): min=22, max=9819, avg=183.70, stdev=603.82 clat (msec): min=208, max=1785, avg=828.07, stdev=221.38 lat (msec): min=208, max=1785, avg=828.25, stdev=221.39 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 401], 10.00th=[ 592], 20.00th=[ 684], | 30.00th=[ 743], 40.00th=[ 785], 50.00th=[ 827], 60.00th=[ 877], | 70.00th=[ 919], 80.00th=[ 978], 90.00th=[ 1083], 95.00th=[ 1183], | 99.00th=[ 1435], 99.50th=[ 1519], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 254, per=24.84%, avg=76.50, stdev=31.44, samples=264 iops : min= 1, max= 63, avg=18.73, stdev= 7.87, samples=264 lat (msec) : 250=1.76%, 500=4.34%, 750=25.98%, 1000=50.55%, 2000=17.38% cpu : usr=0.04%, sys=0.27%, ctx=1835, 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=309KiB/s (316kB/s), 77.2KiB/s-77.2KiB/s (79.0kB/s-79.1kB/s), io=40.0MiB (41.9MB), run=132589-132705msec 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=145487: Thu Aug 27 09:54:47 2026 read: IOPS=14, BW=56.5KiB/s (57.9kB/s)(5048KiB/89350msec) slat (usec): min=2720, max=63585, avg=12896.21, stdev=6891.48 clat (msec): min=43, max=1170, avg=353.16, stdev=93.32 lat (msec): min=57, max=1177, avg=366.07, stdev=94.12 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 234], 10.00th=[ 262], 20.00th=[ 288], | 30.00th=[ 305], 40.00th=[ 326], 50.00th=[ 347], 60.00th=[ 363], | 70.00th=[ 388], 80.00th=[ 414], 90.00th=[ 456], 95.00th=[ 498], | 99.00th=[ 617], 99.50th=[ 659], 99.90th=[ 1150], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 127, per=25.59%, avg=56.81, stdev=23.45, samples=175 iops : min= 1, max= 31, avg=13.76, stdev= 5.91, samples=175 write: IOPS=14, BW=58.1KiB/s (59.5kB/s)(5192KiB/89350msec); 0 zone resets slat (usec): min=25, max=11109, avg=226.55, stdev=680.21 clat (msec): min=310, max=1757, avg=742.24, stdev=201.40 lat (msec): min=310, max=1757, avg=742.47, stdev=201.38 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 468], 10.00th=[ 518], 20.00th=[ 584], | 30.00th=[ 625], 40.00th=[ 676], 50.00th=[ 718], 60.00th=[ 768], | 70.00th=[ 818], 80.00th=[ 885], 90.00th=[ 986], 95.00th=[ 1099], | 99.00th=[ 1385], 99.50th=[ 1502], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 112, per=25.05%, avg=57.88, stdev=20.84, samples=176 iops : min= 1, max= 28, avg=14.03, stdev= 5.20, samples=176 lat (msec) : 50=0.04%, 100=0.12%, 250=3.32%, 500=47.50%, 750=26.95% lat (msec) : 1000=17.66%, 2000=4.41% cpu : usr=0.13%, sys=0.69%, ctx=4528, 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=145488: Thu Aug 27 09:54:47 2026 read: IOPS=13, BW=55.4KiB/s (56.7kB/s)(4976KiB/89829msec) slat (usec): min=58, max=46379, avg=12693.32, stdev=6923.21 clat (msec): min=21, max=1091, avg=355.76, stdev=93.58 lat (msec): min=21, max=1106, avg=368.46, stdev=94.15 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 239], 10.00th=[ 262], 20.00th=[ 292], | 30.00th=[ 309], 40.00th=[ 330], 50.00th=[ 347], 60.00th=[ 363], | 70.00th=[ 384], 80.00th=[ 418], 90.00th=[ 460], 95.00th=[ 506], | 99.00th=[ 642], 99.50th=[ 810], 99.90th=[ 1083], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 112, per=24.88%, avg=55.23, stdev=23.17, samples=177 iops : min= 1, max= 28, avg=13.37, stdev= 5.85, samples=177 write: IOPS=14, BW=58.6KiB/s (60.0kB/s)(5264KiB/89829msec); 0 zone resets slat (usec): min=28, max=12708, avg=245.21, stdev=792.41 clat (msec): min=177, max=1653, avg=742.58, stdev=203.39 lat (msec): min=178, max=1655, avg=742.82, stdev=203.38 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 447], 10.00th=[ 502], 20.00th=[ 575], | 30.00th=[ 634], 40.00th=[ 676], 50.00th=[ 726], 60.00th=[ 776], | 70.00th=[ 827], 80.00th=[ 902], 90.00th=[ 995], 95.00th=[ 1099], | 99.00th=[ 1351], 99.50th=[ 1485], 99.90th=[ 1620], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 7, max= 135, per=25.16%, avg=58.11, stdev=22.01, samples=178 iops : min= 1, max= 33, avg=14.09, stdev= 5.54, samples=178 lat (msec) : 50=0.16%, 100=0.16%, 250=3.12%, 500=47.58%, 750=25.55% lat (msec) : 1000=18.87%, 2000=4.57% cpu : usr=0.12%, sys=0.74%, ctx=4765, 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=145489: Thu Aug 27 09:54:47 2026 read: IOPS=13, BW=55.4KiB/s (56.7kB/s)(4984KiB/89969msec) slat (usec): min=2991, max=54110, avg=12694.28, stdev=6981.90 clat (msec): min=30, max=956, avg=355.40, stdev=83.29 lat (msec): min=35, max=976, avg=368.10, stdev=84.11 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 239], 10.00th=[ 262], 20.00th=[ 292], | 30.00th=[ 313], 40.00th=[ 334], 50.00th=[ 351], 60.00th=[ 372], | 70.00th=[ 388], 80.00th=[ 414], 90.00th=[ 456], 95.00th=[ 498], | 99.00th=[ 617], 99.50th=[ 634], 99.90th=[ 651], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 126, per=25.17%, avg=55.87, stdev=23.85, samples=176 iops : min= 1, max= 31, avg=13.53, stdev= 5.98, samples=176 write: IOPS=14, BW=58.4KiB/s (59.8kB/s)(5256KiB/89969msec); 0 zone resets slat (usec): min=24, max=15762, avg=235.39, stdev=803.77 clat (msec): min=272, max=1598, avg=743.91, stdev=201.93 lat (msec): min=272, max=1598, avg=744.15, stdev=201.93 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 447], 10.00th=[ 514], 20.00th=[ 584], | 30.00th=[ 634], 40.00th=[ 676], 50.00th=[ 726], 60.00th=[ 768], | 70.00th=[ 827], 80.00th=[ 885], 90.00th=[ 995], 95.00th=[ 1133], | 99.00th=[ 1318], 99.50th=[ 1502], 99.90th=[ 1586], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 8, max= 120, per=25.17%, avg=58.15, stdev=20.87, samples=177 iops : min= 2, max= 30, avg=14.10, stdev= 5.28, samples=177 lat (msec) : 50=0.08%, 100=0.20%, 250=3.36%, 500=47.27%, 750=26.56% lat (msec) : 1000=17.66%, 2000=4.88% cpu : usr=0.10%, sys=0.74%, ctx=4299, 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=145490: Thu Aug 27 09:54:47 2026 read: IOPS=14, BW=56.0KiB/s (57.4kB/s)(5060KiB/90332msec) slat (msec): min=2, max=343, avg=13.94, stdev=19.26 clat (msec): min=27, max=1527, avg=360.67, stdev=114.73 lat (msec): min=40, max=1535, avg=374.62, stdev=118.25 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 241], 10.00th=[ 268], 20.00th=[ 292], | 30.00th=[ 317], 40.00th=[ 330], 50.00th=[ 347], 60.00th=[ 368], | 70.00th=[ 388], 80.00th=[ 418], 90.00th=[ 456], 95.00th=[ 502], | 99.00th=[ 617], 99.50th=[ 1217], 99.90th=[ 1519], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8, max= 128, per=25.44%, avg=56.47, stdev=23.59, samples=176 iops : min= 2, max= 32, avg=13.68, stdev= 5.92, samples=176 write: IOPS=14, BW=57.3KiB/s (58.7kB/s)(5180KiB/90332msec); 0 zone resets slat (usec): min=28, max=24821, avg=287.94, stdev=1255.10 clat (msec): min=111, max=1846, avg=747.71, stdev=200.49 lat (msec): min=111, max=1846, avg=748.01, stdev=200.48 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 472], 10.00th=[ 523], 20.00th=[ 592], | 30.00th=[ 634], 40.00th=[ 684], 50.00th=[ 735], 60.00th=[ 776], | 70.00th=[ 827], 80.00th=[ 877], 90.00th=[ 986], 95.00th=[ 1083], | 99.00th=[ 1385], 99.50th=[ 1536], 99.90th=[ 1804], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 111, per=24.65%, avg=56.93, stdev=23.00, samples=178 iops : min= 1, max= 27, avg=13.80, stdev= 5.79, samples=178 lat (msec) : 50=0.08%, 100=0.20%, 250=3.09%, 500=47.15%, 750=26.17% lat (msec) : 1000=18.48%, 2000=4.84% cpu : usr=0.11%, sys=0.72%, ctx=4261, 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=222KiB/s (227kB/s), 55.4KiB/s-56.5KiB/s (56.7kB/s-57.9kB/s), io=19.6MiB (20.5MB), run=89350-90332msec WRITE: bw=231KiB/s (237kB/s), 57.3KiB/s-58.6KiB/s (58.7kB/s-60.0kB/s), io=20.4MiB (21.4MB), run=89350-90332msec 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=145507: Thu Aug 27 09:54:57 2026 read: IOPS=1, BW=61.3MiB/s (64.3MB/s)(40.0MiB/652msec) slat (nsec): min=48445k, max=48445k, avg=48444904.00, stdev= 0.00 clat (nsec): min=572124k, max=572124k, avg=572124368.00, stdev= 0.00 lat (nsec): min=620574k, max=620574k, avg=620574132.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=0.77%, ctx=43, 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=61.3MiB/s (64.3MB/s), 61.3MiB/s-61.3MiB/s (64.3MB/s-64.3MB/s), io=40.0MiB (41.9MB), run=652-652msec 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