== sanity test 398c: run fio to test AIO ================= 10:40:32 (1786804832) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.393465 s, 107 MB/s osc.lustre-OST0000-osc-ffff9059c5e0d000.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=175380: Sat Aug 15 10:43:06 2026 write: IOPS=17, BW=70.1KiB/s (71.8kB/s)(10.0MiB/145981msec); 0 zone resets slat (usec): min=49, max=13341, avg=316.65, stdev=868.98 clat (msec): min=156, max=1821, avg=911.24, stdev=218.54 lat (msec): min=156, max=1821, avg=911.55, stdev=218.56 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 558], 10.00th=[ 659], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 902], 60.00th=[ 961], | 70.00th=[ 1011], 80.00th=[ 1070], 90.00th=[ 1200], 95.00th=[ 1284], | 99.00th=[ 1435], 99.50th=[ 1536], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 240, per=25.06%, avg=70.17, stdev=32.86, samples=287 iops : min= 1, max= 60, avg=17.09, stdev= 8.26, samples=287 lat (msec) : 250=0.70%, 500=1.99%, 750=17.85%, 1000=47.73%, 2000=31.72% cpu : usr=0.04%, sys=0.29%, ctx=2183, 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=175381: Sat Aug 15 10:43:06 2026 write: IOPS=17, BW=70.4KiB/s (72.1kB/s)(10.0MiB/145455msec); 0 zone resets slat (usec): min=50, max=10176, avg=278.85, stdev=660.34 clat (msec): min=138, max=1927, avg=908.44, stdev=227.76 lat (msec): min=140, max=1928, avg=908.72, stdev=227.76 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 535], 10.00th=[ 642], 20.00th=[ 751], | 30.00th=[ 802], 40.00th=[ 860], 50.00th=[ 902], 60.00th=[ 953], | 70.00th=[ 1003], 80.00th=[ 1070], 90.00th=[ 1217], 95.00th=[ 1318], | 99.00th=[ 1502], 99.50th=[ 1569], 99.90th=[ 1703], 99.95th=[ 1720], | 99.99th=[ 1921] bw ( KiB/s): min= 7, max= 214, per=25.24%, avg=70.66, stdev=33.24, samples=285 iops : min= 1, max= 53, avg=17.21, stdev= 8.30, samples=285 lat (msec) : 250=1.33%, 500=2.27%, 750=16.60%, 1000=49.57%, 2000=30.23% cpu : usr=0.05%, sys=0.30%, ctx=2256, 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=175382: Sat Aug 15 10:43:06 2026 write: IOPS=17, BW=70.2KiB/s (71.9kB/s)(10.0MiB/145816msec); 0 zone resets slat (usec): min=50, max=15601, avg=351.47, stdev=950.29 clat (msec): min=75, max=1788, avg=910.33, stdev=221.44 lat (msec): min=75, max=1788, avg=910.68, stdev=221.42 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 550], 10.00th=[ 634], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 911], 60.00th=[ 953], | 70.00th=[ 1003], 80.00th=[ 1070], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1435], 99.50th=[ 1536], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 15, max= 188, per=24.80%, avg=69.45, stdev=26.07, samples=290 iops : min= 3, max= 47, avg=16.91, stdev= 6.56, samples=290 lat (msec) : 100=0.04%, 250=0.82%, 500=2.03%, 750=18.28%, 1000=47.89% lat (msec) : 2000=30.94% cpu : usr=0.04%, sys=0.31%, ctx=2428, 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=175383: Sat Aug 15 10:43:06 2026 write: IOPS=17, BW=70.3KiB/s (71.0kB/s)(10.0MiB/145697msec); 0 zone resets slat (usec): min=54, max=6935, avg=274.87, stdev=577.00 clat (msec): min=174, max=1821, avg=909.57, stdev=217.33 lat (msec): min=174, max=1821, avg=909.85, stdev=217.35 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 558], 10.00th=[ 651], 20.00th=[ 751], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 902], 60.00th=[ 953], | 70.00th=[ 1003], 80.00th=[ 1083], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1452], 99.50th=[ 1536], 99.90th=[ 1687], 99.95th=[ 1787], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 176, per=24.81%, avg=69.46, stdev=28.11, samples=290 iops : min= 1, max= 44, avg=16.91, stdev= 7.06, samples=290 lat (msec) : 250=0.74%, 500=2.30%, 750=16.95%, 1000=49.30%, 2000=30.70% cpu : usr=0.04%, sys=0.31%, ctx=2381, 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=281KiB/s (287kB/s), 70.1KiB/s-70.4KiB/s (71.8kB/s-72.1kB/s), io=40.0MiB (41.9MB), run=145455-145981msec 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=175415: Sat Aug 15 10:45:03 2026 read: IOPS=11, BW=46.5KiB/s (47.6kB/s)(5048KiB/108609msec) slat (usec): min=3221, max=50989, avg=14154.37, stdev=7524.51 clat (msec): min=17, max=785, avg=418.58, stdev=105.93 lat (msec): min=29, max=798, avg=432.74, stdev=106.80 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 271], 10.00th=[ 300], 20.00th=[ 334], | 30.00th=[ 359], 40.00th=[ 384], 50.00th=[ 409], 60.00th=[ 435], | 70.00th=[ 464], 80.00th=[ 502], 90.00th=[ 558], 95.00th=[ 609], | 99.00th=[ 701], 99.50th=[ 718], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 111, per=25.28%, avg=46.52, stdev=22.15, samples=213 iops : min= 1, max= 27, avg=11.15, stdev= 5.54, samples=213 write: IOPS=11, BW=47.8KiB/s (48.0kB/s)(5192KiB/108609msec); 0 zone resets slat (usec): min=54, max=10759, avg=371.47, stdev=887.43 clat (msec): min=268, max=1821, avg=915.31, stdev=236.90 lat (msec): min=271, max=1821, avg=915.69, stdev=236.88 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 550], 10.00th=[ 617], 20.00th=[ 693], | 30.00th=[ 776], 40.00th=[ 852], 50.00th=[ 911], 60.00th=[ 961], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1217], 95.00th=[ 1301], | 99.00th=[ 1569], 99.50th=[ 1720], 99.90th=[ 1787], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 96, per=24.52%, avg=47.08, stdev=19.10, samples=216 iops : min= 1, max= 24, avg=11.30, stdev= 4.83, samples=216 lat (msec) : 20=0.04%, 50=0.12%, 100=0.27%, 250=0.98%, 500=38.63% lat (msec) : 750=22.38%, 1000=20.00%, 2000=17.58% cpu : usr=0.09%, sys=0.69%, ctx=5065, 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=175416: Sat Aug 15 10:45:03 2026 read: IOPS=11, BW=45.9KiB/s (46.0kB/s)(4976KiB/108433msec) slat (usec): min=2568, max=48292, avg=14075.85, stdev=7208.20 clat (msec): min=16, max=788, avg=414.41, stdev=104.40 lat (msec): min=26, max=800, avg=428.49, stdev=105.26 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 264], 10.00th=[ 300], 20.00th=[ 330], | 30.00th=[ 359], 40.00th=[ 384], 50.00th=[ 409], 60.00th=[ 430], | 70.00th=[ 460], 80.00th=[ 493], 90.00th=[ 550], 95.00th=[ 600], | 99.00th=[ 701], 99.50th=[ 726], 99.90th=[ 768], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 104, per=24.64%, avg=45.33, stdev=20.69, samples=215 iops : min= 1, max= 26, avg=10.86, stdev= 5.15, samples=215 write: IOPS=12, BW=48.5KiB/s (49.7kB/s)(5264KiB/108433msec); 0 zone resets slat (usec): min=52, max=18024, avg=370.92, stdev=979.94 clat (msec): min=307, max=1750, avg=911.50, stdev=239.08 lat (msec): min=308, max=1750, avg=911.88, stdev=239.08 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 558], 10.00th=[ 617], 20.00th=[ 701], | 30.00th=[ 768], 40.00th=[ 844], 50.00th=[ 894], 60.00th=[ 961], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1217], 95.00th=[ 1301], | 99.00th=[ 1552], 99.50th=[ 1687], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 112, per=25.10%, avg=48.19, stdev=21.45, samples=214 iops : min= 1, max= 28, avg=11.57, stdev= 5.39, samples=214 lat (msec) : 20=0.04%, 50=0.12%, 100=0.31%, 250=1.13%, 500=39.34% lat (msec) : 750=21.29%, 1000=20.23%, 2000=17.54% cpu : usr=0.11%, sys=0.65%, ctx=4790, 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=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=175417: Sat Aug 15 10:45:03 2026 read: IOPS=11, BW=45.9KiB/s (46.0kB/s)(4984KiB/108621msec) slat (usec): min=3188, max=66149, avg=14323.59, stdev=7713.26 clat (msec): min=17, max=788, avg=418.27, stdev=110.37 lat (msec): min=25, max=800, avg=432.60, stdev=111.04 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 253], 10.00th=[ 292], 20.00th=[ 334], | 30.00th=[ 363], 40.00th=[ 388], 50.00th=[ 414], 60.00th=[ 439], | 70.00th=[ 464], 80.00th=[ 506], 90.00th=[ 558], 95.00th=[ 609], | 99.00th=[ 709], 99.50th=[ 743], 99.90th=[ 760], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 111, per=24.89%, avg=45.79, stdev=20.68, samples=214 iops : min= 1, max= 27, avg=10.97, stdev= 5.16, samples=214 write: IOPS=12, BW=48.4KiB/s (49.5kB/s)(5256KiB/108621msec); 0 zone resets slat (usec): min=57, max=13959, avg=390.22, stdev=978.00 clat (msec): min=179, max=1817, avg=910.26, stdev=243.96 lat (msec): min=179, max=1817, avg=910.65, stdev=243.91 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 550], 10.00th=[ 592], 20.00th=[ 701], | 30.00th=[ 776], 40.00th=[ 852], 50.00th=[ 902], 60.00th=[ 961], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1217], 95.00th=[ 1301], | 99.00th=[ 1569], 99.50th=[ 1720], 99.90th=[ 1770], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 15, max= 104, per=24.75%, avg=47.53, stdev=19.23, samples=216 iops : min= 3, max= 26, avg=11.41, stdev= 4.82, samples=216 lat (msec) : 20=0.04%, 50=0.16%, 100=0.31%, 250=2.07%, 500=37.42% lat (msec) : 750=21.88%, 1000=20.82%, 2000=17.30% cpu : usr=0.08%, sys=0.66%, ctx=4998, 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=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=175418: Sat Aug 15 10:45:03 2026 read: IOPS=11, BW=46.8KiB/s (47.9kB/s)(5060KiB/108081msec) slat (usec): min=128, max=66166, avg=14131.87, stdev=7834.33 clat (msec): min=21, max=817, avg=416.43, stdev=106.71 lat (msec): min=23, max=824, avg=430.57, stdev=107.65 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 264], 10.00th=[ 296], 20.00th=[ 334], | 30.00th=[ 355], 40.00th=[ 380], 50.00th=[ 409], 60.00th=[ 435], | 70.00th=[ 464], 80.00th=[ 502], 90.00th=[ 550], 95.00th=[ 609], | 99.00th=[ 718], 99.50th=[ 751], 99.90th=[ 810], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 112, per=25.26%, avg=46.49, stdev=20.28, samples=214 iops : min= 1, max= 28, avg=11.14, stdev= 5.09, samples=214 write: IOPS=11, BW=47.9KiB/s (49.1kB/s)(5180KiB/108081msec); 0 zone resets slat (usec): min=54, max=14712, avg=349.08, stdev=954.36 clat (msec): min=126, max=1774, avg=913.58, stdev=246.80 lat (msec): min=126, max=1775, avg=913.94, stdev=246.85 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 550], 10.00th=[ 609], 20.00th=[ 701], | 30.00th=[ 776], 40.00th=[ 852], 50.00th=[ 911], 60.00th=[ 961], | 70.00th=[ 1028], 80.00th=[ 1116], 90.00th=[ 1234], 95.00th=[ 1301], | 99.00th=[ 1586], 99.50th=[ 1687], 99.90th=[ 1754], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 104, per=24.84%, avg=47.70, stdev=19.78, samples=212 iops : min= 1, max= 26, avg=11.46, stdev= 4.95, samples=212 lat (msec) : 50=0.12%, 100=0.12%, 250=1.91%, 500=38.67%, 750=21.88% lat (msec) : 1000=20.16%, 2000=17.15% cpu : usr=0.10%, sys=0.68%, ctx=5052, 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=185KiB/s (189kB/s), 45.9KiB/s-46.8KiB/s (46.0kB/s-47.9kB/s), io=19.6MiB (20.5MB), run=108081-108621msec WRITE: bw=192KiB/s (197kB/s), 47.8KiB/s-48.5KiB/s (48.0kB/s-49.7kB/s), io=20.4MiB (21.4MB), run=108081-108621msec 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=175437: Sat Aug 15 10:45:12 2026 read: IOPS=2, BW=87.5MiB/s (91.8MB/s)(40.0MiB/457msec) slat (nsec): min=32666k, max=32666k, avg=32665569.00, stdev= 0.00 clat (nsec): min=406451k, max=406451k, avg=406451206.00, stdev= 0.00 lat (nsec): min=439123k, max=439123k, avg=439123294.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] lat (msec) : 500=100.00% cpu : usr=0.22%, sys=2.63%, 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=87.5MiB/s (91.8MB/s), 87.5MiB/s-87.5MiB/s (91.8MB/s-91.8MB/s), io=40.0MiB (41.9MB), run=457-457msec 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