== sanity test 398c: run fio to test AIO ================= 07:49:21 (1787399361) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.439967 s, 95.3 MB/s osc.lustre-OST0000-osc-ffff8b04321d9000.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=179119: Sat Aug 22 07:49:57 2026 write: IOPS=102, BW=409KiB/s (418kB/s)(10.0MiB/25063msec); 0 zone resets slat (usec): min=42, max=20802, avg=366.60, stdev=967.69 clat (msec): min=10, max=304, avg=156.05, stdev=39.29 lat (msec): min=10, max=308, avg=156.42, stdev=39.28 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 101], 10.00th=[ 110], 20.00th=[ 124], | 30.00th=[ 134], 40.00th=[ 144], 50.00th=[ 153], 60.00th=[ 163], | 70.00th=[ 174], 80.00th=[ 188], 90.00th=[ 207], 95.00th=[ 226], | 99.00th=[ 275], 99.50th=[ 288], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 255, max= 565, per=25.12%, avg=407.22, stdev=69.60, samples=49 iops : min= 63, max= 141, avg=101.43, stdev=17.33, samples=49 lat (msec) : 20=0.08%, 50=0.08%, 100=4.73%, 250=93.44%, 500=1.68% cpu : usr=0.26%, sys=1.88%, ctx=2845, 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=179120: Sat Aug 22 07:49:57 2026 write: IOPS=101, BW=405KiB/s (415kB/s)(10.0MiB/25265msec); 0 zone resets slat (usec): min=40, max=13916, avg=316.92, stdev=897.59 clat (msec): min=27, max=302, avg=156.50, stdev=38.13 lat (msec): min=27, max=303, avg=156.82, stdev=38.13 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 104], 10.00th=[ 113], 20.00th=[ 123], | 30.00th=[ 134], 40.00th=[ 142], 50.00th=[ 153], 60.00th=[ 163], | 70.00th=[ 176], 80.00th=[ 190], 90.00th=[ 207], 95.00th=[ 224], | 99.00th=[ 266], 99.50th=[ 275], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 305] bw ( KiB/s): min= 250, max= 558, per=24.92%, avg=403.96, stdev=86.16, samples=50 iops : min= 62, max= 139, avg=100.60, stdev=21.47, samples=50 lat (msec) : 50=0.04%, 100=4.14%, 250=94.02%, 500=1.80% cpu : usr=0.24%, sys=1.47%, ctx=2166, 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=179121: Sat Aug 22 07:49:57 2026 write: IOPS=101, BW=407KiB/s (417kB/s)(10.0MiB/25152msec); 0 zone resets slat (usec): min=38, max=15228, avg=403.95, stdev=1014.38 clat (msec): min=15, max=297, avg=155.93, stdev=38.15 lat (msec): min=17, max=297, avg=156.33, stdev=38.18 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 104], 10.00th=[ 113], 20.00th=[ 124], | 30.00th=[ 136], 40.00th=[ 144], 50.00th=[ 153], 60.00th=[ 161], | 70.00th=[ 171], 80.00th=[ 186], 90.00th=[ 211], 95.00th=[ 230], | 99.00th=[ 257], 99.50th=[ 275], 99.90th=[ 292], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 255, max= 542, per=25.00%, avg=405.27, stdev=68.60, samples=49 iops : min= 63, max= 135, avg=100.94, stdev=17.12, samples=49 lat (msec) : 20=0.04%, 50=0.23%, 100=3.59%, 250=94.49%, 500=1.64% cpu : usr=0.31%, sys=1.63%, ctx=2677, 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=179122: Sat Aug 22 07:49:57 2026 write: IOPS=101, BW=406KiB/s (415kB/s)(10.0MiB/25246msec); 0 zone resets slat (usec): min=37, max=15306, avg=375.99, stdev=977.58 clat (msec): min=14, max=284, avg=156.43, stdev=37.42 lat (msec): min=15, max=296, avg=156.81, stdev=37.47 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 104], 10.00th=[ 112], 20.00th=[ 125], | 30.00th=[ 136], 40.00th=[ 142], 50.00th=[ 153], 60.00th=[ 163], | 70.00th=[ 171], 80.00th=[ 186], 90.00th=[ 209], 95.00th=[ 228], | 99.00th=[ 259], 99.50th=[ 279], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 284] bw ( KiB/s): min= 255, max= 550, per=24.94%, avg=404.26, stdev=68.44, samples=50 iops : min= 63, max= 137, avg=100.70, stdev=17.08, samples=50 lat (msec) : 20=0.04%, 50=0.04%, 100=3.24%, 250=95.31%, 500=1.37% cpu : usr=0.22%, sys=1.62%, ctx=2515, 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=1621KiB/s (1660kB/s), 405KiB/s-409KiB/s (415kB/s-418kB/s), io=40.0MiB (41.9MB), run=25063-25265msec 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=179136: Sat Aug 22 07:50:34 2026 read: IOPS=44, BW=178KiB/s (182kB/s)(5048KiB/28353msec) slat (usec): min=2763, max=53422, avg=13173.21, stdev=7325.80 clat (msec): min=31, max=338, avg=165.41, stdev=44.24 lat (msec): min=50, max=355, avg=178.60, stdev=46.19 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 104], 10.00th=[ 114], 20.00th=[ 128], | 30.00th=[ 140], 40.00th=[ 153], 50.00th=[ 161], 60.00th=[ 171], | 70.00th=[ 184], 80.00th=[ 199], 90.00th=[ 222], 95.00th=[ 249], | 99.00th=[ 292], 99.50th=[ 326], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 87, max= 318, per=25.06%, avg=177.14, stdev=47.11, samples=56 iops : min= 21, max= 79, avg=43.77, stdev=11.81, samples=56 write: IOPS=45, BW=183KiB/s (188kB/s)(5192KiB/28353msec); 0 zone resets slat (usec): min=45, max=11959, avg=388.35, stdev=806.15 clat (msec): min=28, max=326, avg=172.45, stdev=42.15 lat (msec): min=28, max=327, avg=172.84, stdev=42.17 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 109], 10.00th=[ 121], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 159], 50.00th=[ 169], 60.00th=[ 182], | 70.00th=[ 192], 80.00th=[ 207], 90.00th=[ 228], 95.00th=[ 255], | 99.00th=[ 284], 99.50th=[ 292], 99.90th=[ 300], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 88, max= 262, per=24.81%, avg=182.62, stdev=38.30, samples=56 iops : min= 22, max= 65, avg=45.14, stdev= 9.51, samples=56 lat (msec) : 50=0.08%, 100=2.42%, 250=92.30%, 500=5.20% cpu : usr=0.32%, sys=2.46%, ctx=4645, 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=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=179137: Sat Aug 22 07:50:34 2026 read: IOPS=44, BW=176KiB/s (180kB/s)(4976KiB/28260msec) slat (usec): min=90, max=50081, avg=13048.38, stdev=7174.60 clat (msec): min=11, max=370, avg=167.85, stdev=45.80 lat (msec): min=17, max=385, avg=180.91, stdev=47.95 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 105], 10.00th=[ 114], 20.00th=[ 130], | 30.00th=[ 142], 40.00th=[ 150], 50.00th=[ 163], 60.00th=[ 176], | 70.00th=[ 188], 80.00th=[ 205], 90.00th=[ 226], 95.00th=[ 247], | 99.00th=[ 309], 99.50th=[ 338], 99.90th=[ 363], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 95, max= 300, per=24.77%, avg=175.15, stdev=44.29, samples=55 iops : min= 23, max= 75, avg=43.25, stdev=11.11, samples=55 write: IOPS=46, BW=186KiB/s (191kB/s)(5264KiB/28260msec); 0 zone resets slat (usec): min=39, max=21981, avg=415.86, stdev=1029.92 clat (msec): min=26, max=317, avg=171.36, stdev=42.07 lat (msec): min=27, max=318, avg=171.77, stdev=42.07 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 109], 10.00th=[ 120], 20.00th=[ 134], | 30.00th=[ 148], 40.00th=[ 159], 50.00th=[ 169], 60.00th=[ 180], | 70.00th=[ 192], 80.00th=[ 207], 90.00th=[ 224], 95.00th=[ 243], | 99.00th=[ 284], 99.50th=[ 309], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 71, max= 318, per=25.30%, avg=186.20, stdev=45.22, samples=55 iops : min= 17, max= 79, avg=46.02, stdev=11.29, samples=55 lat (msec) : 20=0.04%, 50=0.16%, 100=2.50%, 250=93.09%, 500=4.22% cpu : usr=0.35%, sys=2.60%, ctx=4454, 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=179138: Sat Aug 22 07:50:34 2026 read: IOPS=43, BW=176KiB/s (180kB/s)(4984KiB/28353msec) slat (usec): min=2247, max=63461, avg=13107.37, stdev=7485.20 clat (msec): min=23, max=393, avg=165.68, stdev=45.91 lat (msec): min=30, max=403, avg=178.80, stdev=48.02 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 104], 10.00th=[ 114], 20.00th=[ 127], | 30.00th=[ 140], 40.00th=[ 148], 50.00th=[ 161], 60.00th=[ 171], | 70.00th=[ 186], 80.00th=[ 201], 90.00th=[ 222], 95.00th=[ 247], | 99.00th=[ 321], 99.50th=[ 355], 99.90th=[ 372], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 94, max= 271, per=24.82%, avg=175.46, stdev=45.81, samples=56 iops : min= 23, max= 67, avg=43.34, stdev=11.43, samples=56 write: IOPS=46, BW=185KiB/s (190kB/s)(5256KiB/28353msec); 0 zone resets slat (usec): min=47, max=15765, avg=439.17, stdev=1070.17 clat (msec): min=85, max=362, avg=172.46, stdev=41.30 lat (msec): min=85, max=362, avg=172.91, stdev=41.29 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 111], 10.00th=[ 123], 20.00th=[ 138], | 30.00th=[ 148], 40.00th=[ 159], 50.00th=[ 169], 60.00th=[ 182], | 70.00th=[ 192], 80.00th=[ 205], 90.00th=[ 226], 95.00th=[ 247], | 99.00th=[ 288], 99.50th=[ 300], 99.90th=[ 330], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 103, max= 302, per=25.01%, avg=184.11, stdev=45.26, samples=56 iops : min= 25, max= 75, avg=45.52, stdev=11.35, samples=56 lat (msec) : 50=0.12%, 100=2.58%, 250=92.66%, 500=4.65% cpu : usr=0.33%, sys=2.68%, ctx=4549, 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=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=179139: Sat Aug 22 07:50:34 2026 read: IOPS=44, BW=179KiB/s (183kB/s)(5060KiB/28346msec) slat (usec): min=2171, max=64514, avg=13015.36, stdev=7418.45 clat (msec): min=73, max=355, avg=166.16, stdev=43.09 lat (msec): min=78, max=371, avg=179.18, stdev=45.10 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 105], 10.00th=[ 116], 20.00th=[ 131], | 30.00th=[ 142], 40.00th=[ 153], 50.00th=[ 161], 60.00th=[ 171], | 70.00th=[ 184], 80.00th=[ 199], 90.00th=[ 224], 95.00th=[ 241], | 99.00th=[ 305], 99.50th=[ 321], 99.90th=[ 351], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 102, max= 318, per=25.12%, avg=177.61, stdev=43.17, samples=56 iops : min= 25, max= 79, avg=43.89, stdev=10.78, samples=56 write: IOPS=45, BW=183KiB/s (187kB/s)(5180KiB/28346msec); 0 zone resets slat (usec): min=40, max=9600, avg=380.02, stdev=812.86 clat (msec): min=87, max=341, avg=172.64, stdev=42.10 lat (msec): min=88, max=342, avg=173.03, stdev=42.07 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 112], 10.00th=[ 122], 20.00th=[ 134], | 30.00th=[ 146], 40.00th=[ 159], 50.00th=[ 169], 60.00th=[ 182], | 70.00th=[ 190], 80.00th=[ 207], 90.00th=[ 228], 95.00th=[ 247], | 99.00th=[ 292], 99.50th=[ 300], 99.90th=[ 338], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 102, max= 310, per=24.72%, avg=181.93, stdev=42.81, samples=56 iops : min= 25, max= 77, avg=44.96, stdev=10.71, samples=56 lat (msec) : 100=2.23%, 250=93.55%, 500=4.22% cpu : usr=0.31%, sys=2.47%, ctx=4416, 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=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=708KiB/s (725kB/s), 176KiB/s-179KiB/s (180kB/s-183kB/s), io=19.6MiB (20.5MB), run=28260-28353msec WRITE: bw=737KiB/s (755kB/s), 183KiB/s-186KiB/s (187kB/s-191kB/s), io=20.4MiB (21.4MB), run=28260-28353msec 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=179147: Sat Aug 22 07:50:43 2026 read: IOPS=1, BW=65.9MiB/s (69.1MB/s)(40.0MiB/607msec) slat (nsec): min=44226k, max=44226k, avg=44226131.00, stdev= 0.00 clat (nsec): min=521581k, max=521581k, avg=521580542.00, stdev= 0.00 lat (nsec): min=565813k, max=565813k, avg=565812936.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] lat (msec) : 750=100.00% cpu : usr=0.17%, sys=2.64%, ctx=5, 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=65.9MiB/s (69.1MB/s), 65.9MiB/s-65.9MiB/s (69.1MB/s-69.1MB/s), io=40.0MiB (41.9MB), run=607-607msec 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