== sanity test 398c: run fio to test AIO ================= 17:53:03 (1786830783) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.699095 s, 60.0 MB/s osc.lustre-OST0000-osc-ffff8e1ec2e4d800.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=145512: Sat Aug 15 17:55:49 2026 write: IOPS=16, BW=66.8KiB/s (68.4kB/s)(10.0MiB/153277msec); 0 zone resets slat (usec): min=35, max=27497, avg=255.75, stdev=963.61 clat (msec): min=164, max=2156, avg=957.25, stdev=338.09 lat (msec): min=164, max=2156, avg=957.51, stdev=338.12 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 502], 10.00th=[ 592], 20.00th=[ 676], | 30.00th=[ 751], 40.00th=[ 835], 50.00th=[ 902], 60.00th=[ 986], | 70.00th=[ 1083], 80.00th=[ 1217], 90.00th=[ 1435], 95.00th=[ 1586], | 99.00th=[ 1938], 99.50th=[ 2089], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 204, per=25.44%, avg=67.94, stdev=32.69, samples=296 iops : min= 1, max= 51, avg=16.49, stdev= 8.23, samples=296 lat (msec) : 250=0.62%, 500=4.10%, 750=24.88%, 1000=32.15%, 2000=37.58% lat (msec) : >=2000=0.66% cpu : usr=0.04%, sys=0.28%, ctx=1849, 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=145513: Sat Aug 15 17:55:49 2026 write: IOPS=16, BW=66.8KiB/s (68.4kB/s)(10.0MiB/153199msec); 0 zone resets slat (usec): min=36, max=24066, avg=273.42, stdev=949.62 clat (msec): min=168, max=2227, avg=956.28, stdev=337.05 lat (msec): min=168, max=2227, avg=956.56, stdev=337.06 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 498], 10.00th=[ 584], 20.00th=[ 693], | 30.00th=[ 751], 40.00th=[ 835], 50.00th=[ 902], 60.00th=[ 986], | 70.00th=[ 1062], 80.00th=[ 1217], 90.00th=[ 1435], 95.00th=[ 1620], | 99.00th=[ 1955], 99.50th=[ 2039], 99.90th=[ 2198], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 176, per=25.04%, avg=66.84, stdev=31.60, samples=301 iops : min= 1, max= 44, avg=16.21, stdev= 7.99, samples=301 lat (msec) : 250=0.35%, 500=5.00%, 750=24.06%, 1000=31.91%, 2000=37.81% lat (msec) : >=2000=0.86% cpu : usr=0.05%, sys=0.29%, ctx=1990, 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=145514: Sat Aug 15 17:55:49 2026 write: IOPS=16, BW=66.8KiB/s (68.4kB/s)(10.0MiB/153270msec); 0 zone resets slat (usec): min=35, max=13862, avg=257.91, stdev=815.38 clat (msec): min=259, max=2224, avg=956.70, stdev=332.89 lat (msec): min=259, max=2224, avg=956.96, stdev=332.89 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 506], 10.00th=[ 592], 20.00th=[ 684], | 30.00th=[ 751], 40.00th=[ 835], 50.00th=[ 911], 60.00th=[ 986], | 70.00th=[ 1062], 80.00th=[ 1217], 90.00th=[ 1401], 95.00th=[ 1586], | 99.00th=[ 2005], 99.50th=[ 2123], 99.90th=[ 2198], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 160, per=25.22%, avg=67.33, stdev=32.38, samples=299 iops : min= 1, max= 40, avg=16.34, stdev= 8.15, samples=299 lat (msec) : 500=4.45%, 750=25.00%, 1000=32.27%, 2000=37.23%, >=2000=1.05% cpu : usr=0.04%, sys=0.27%, ctx=1909, 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=145515: Sat Aug 15 17:55:49 2026 write: IOPS=16, BW=66.8KiB/s (68.4kB/s)(10.0MiB/153332msec); 0 zone resets slat (usec): min=35, max=32931, avg=299.43, stdev=1215.63 clat (msec): min=136, max=2129, avg=957.02, stdev=332.33 lat (msec): min=136, max=2130, avg=957.32, stdev=332.36 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 498], 10.00th=[ 592], 20.00th=[ 693], | 30.00th=[ 760], 40.00th=[ 835], 50.00th=[ 911], 60.00th=[ 978], | 70.00th=[ 1070], 80.00th=[ 1234], 90.00th=[ 1435], 95.00th=[ 1586], | 99.00th=[ 1888], 99.50th=[ 2005], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 7, max= 232, per=25.21%, avg=67.31, stdev=35.72, samples=299 iops : min= 1, max= 58, avg=16.33, stdev= 9.00, samples=299 lat (msec) : 250=0.98%, 500=4.18%, 750=23.55%, 1000=33.95%, 2000=36.84% lat (msec) : >=2000=0.51% cpu : usr=0.04%, sys=0.31%, ctx=2075, 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=267KiB/s (274kB/s), 66.8KiB/s-66.8KiB/s (68.4kB/s-68.4kB/s), io=40.0MiB (41.9MB), run=153199-153332msec 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=145547: Sat Aug 15 17:57:58 2026 read: IOPS=10, BW=42.5KiB/s (43.5kB/s)(5048KiB/118829msec) slat (usec): min=67, max=73646, avg=16263.61, stdev=9634.36 clat (msec): min=25, max=1366, avg=450.56, stdev=147.38 lat (msec): min=26, max=1377, avg=466.83, stdev=149.87 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 264], 10.00th=[ 300], 20.00th=[ 342], | 30.00th=[ 380], 40.00th=[ 409], 50.00th=[ 435], 60.00th=[ 464], | 70.00th=[ 498], 80.00th=[ 542], 90.00th=[ 617], 95.00th=[ 718], | 99.00th=[ 944], 99.50th=[ 1062], 99.90th=[ 1301], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7, max= 112, per=25.45%, avg=42.75, stdev=22.54, samples=231 iops : min= 1, max= 28, avg=10.16, stdev= 5.70, samples=231 write: IOPS=10, BW=43.7KiB/s (44.7kB/s)(5192KiB/118829msec); 0 zone resets slat (usec): min=41, max=19150, avg=383.93, stdev=1257.55 clat (msec): min=161, max=2280, avg=1009.34, stdev=344.43 lat (msec): min=161, max=2280, avg=1009.72, stdev=344.45 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 523], 10.00th=[ 584], 20.00th=[ 701], | 30.00th=[ 810], 40.00th=[ 885], 50.00th=[ 986], 60.00th=[ 1070], | 70.00th=[ 1150], 80.00th=[ 1284], 90.00th=[ 1502], 95.00th=[ 1653], | 99.00th=[ 1921], 99.50th=[ 1955], 99.90th=[ 2198], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 111, per=24.98%, avg=43.71, stdev=20.04, samples=232 iops : min= 1, max= 27, avg=10.40, stdev= 5.06, samples=232 lat (msec) : 50=0.35%, 100=0.16%, 250=1.84%, 500=34.69%, 750=22.77% lat (msec) : 1000=15.27%, 2000=24.80%, >=2000=0.12% cpu : usr=0.11%, sys=0.68%, ctx=4860, 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=145548: Sat Aug 15 17:57:58 2026 read: IOPS=10, BW=41.7KiB/s (42.7kB/s)(4976KiB/119200msec) slat (usec): min=3041, max=68774, avg=16172.67, stdev=9500.57 clat (msec): min=24, max=1088, avg=459.54, stdev=145.76 lat (msec): min=29, max=1118, avg=475.72, stdev=148.42 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 264], 10.00th=[ 305], 20.00th=[ 355], | 30.00th=[ 384], 40.00th=[ 414], 50.00th=[ 439], 60.00th=[ 464], | 70.00th=[ 506], 80.00th=[ 550], 90.00th=[ 651], 95.00th=[ 768], | 99.00th=[ 911], 99.50th=[ 961], 99.90th=[ 1070], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 112, per=24.73%, avg=41.55, stdev=21.49, samples=234 iops : min= 1, max= 28, avg= 9.85, stdev= 5.42, samples=234 write: IOPS=11, BW=44.2KiB/s (45.2kB/s)(5264KiB/119200msec); 0 zone resets slat (usec): min=54, max=11153, avg=357.69, stdev=898.66 clat (msec): min=297, max=2225, avg=996.85, stdev=339.88 lat (msec): min=298, max=2225, avg=997.21, stdev=339.84 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 523], 10.00th=[ 584], 20.00th=[ 693], | 30.00th=[ 802], 40.00th=[ 869], 50.00th=[ 978], 60.00th=[ 1062], | 70.00th=[ 1150], 80.00th=[ 1250], 90.00th=[ 1469], 95.00th=[ 1653], | 99.00th=[ 1854], 99.50th=[ 1938], 99.90th=[ 2089], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 112, per=24.80%, avg=43.40, stdev=21.90, samples=237 iops : min= 1, max= 28, avg=10.31, stdev= 5.54, samples=237 lat (msec) : 50=0.20%, 100=0.12%, 250=1.48%, 500=34.22%, 750=22.85% lat (msec) : 1000=16.64%, 2000=24.30%, >=2000=0.20% cpu : usr=0.10%, sys=0.67%, ctx=4351, 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=145549: Sat Aug 15 17:57:58 2026 read: IOPS=10, BW=41.8KiB/s (42.8kB/s)(4984KiB/119260msec) slat (usec): min=2789, max=71994, avg=16097.42, stdev=9271.42 clat (msec): min=23, max=1083, avg=455.87, stdev=135.04 lat (msec): min=28, max=1108, avg=471.98, stdev=136.97 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 271], 10.00th=[ 313], 20.00th=[ 355], | 30.00th=[ 388], 40.00th=[ 414], 50.00th=[ 439], 60.00th=[ 468], | 70.00th=[ 502], 80.00th=[ 550], 90.00th=[ 617], 95.00th=[ 701], | 99.00th=[ 885], 99.50th=[ 911], 99.90th=[ 1011], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 119, per=25.12%, avg=42.20, stdev=21.31, samples=232 iops : min= 1, max= 29, avg=10.02, stdev= 5.38, samples=232 write: IOPS=11, BW=44.1KiB/s (45.1kB/s)(5256KiB/119260msec); 0 zone resets slat (usec): min=46, max=14600, avg=360.92, stdev=977.11 clat (msec): min=307, max=2252, avg=1002.12, stdev=340.77 lat (msec): min=307, max=2252, avg=1002.48, stdev=340.79 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 510], 10.00th=[ 575], 20.00th=[ 709], | 30.00th=[ 810], 40.00th=[ 885], 50.00th=[ 969], 60.00th=[ 1053], | 70.00th=[ 1150], 80.00th=[ 1267], 90.00th=[ 1485], 95.00th=[ 1636], | 99.00th=[ 1888], 99.50th=[ 1972], 99.90th=[ 2198], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 136, per=24.97%, avg=43.69, stdev=20.44, samples=234 iops : min= 1, max= 34, avg=10.39, stdev= 5.19, samples=234 lat (msec) : 50=0.16%, 100=0.08%, 250=1.56%, 500=34.45%, 750=22.46% lat (msec) : 1000=17.23%, 2000=23.91%, >=2000=0.16% cpu : usr=0.09%, sys=0.64%, ctx=4938, 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=145550: Sat Aug 15 17:57:58 2026 read: IOPS=10, BW=42.5KiB/s (43.5kB/s)(5060KiB/119084msec) slat (usec): min=3350, max=79847, avg=16242.02, stdev=9656.94 clat (msec): min=18, max=1106, avg=455.54, stdev=135.89 lat (msec): min=34, max=1136, avg=471.78, stdev=137.87 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 271], 10.00th=[ 309], 20.00th=[ 359], | 30.00th=[ 388], 40.00th=[ 414], 50.00th=[ 435], 60.00th=[ 464], | 70.00th=[ 502], 80.00th=[ 542], 90.00th=[ 617], 95.00th=[ 701], | 99.00th=[ 919], 99.50th=[ 969], 99.90th=[ 1083], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 104, per=25.44%, avg=42.74, stdev=20.98, samples=232 iops : min= 1, max= 26, avg=10.16, stdev= 5.33, samples=232 write: IOPS=10, BW=43.5KiB/s (44.5kB/s)(5180KiB/119084msec); 0 zone resets slat (usec): min=51, max=22974, avg=354.86, stdev=1016.05 clat (msec): min=292, max=2304, avg=1007.05, stdev=338.10 lat (msec): min=293, max=2304, avg=1007.41, stdev=338.12 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 518], 10.00th=[ 592], 20.00th=[ 718], | 30.00th=[ 810], 40.00th=[ 885], 50.00th=[ 978], 60.00th=[ 1070], | 70.00th=[ 1150], 80.00th=[ 1284], 90.00th=[ 1485], 95.00th=[ 1636], | 99.00th=[ 1871], 99.50th=[ 1972], 99.90th=[ 2265], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 112, per=24.77%, avg=43.36, stdev=20.92, samples=233 iops : min= 1, max= 28, avg=10.30, stdev= 5.28, samples=233 lat (msec) : 20=0.04%, 50=0.08%, 100=0.08%, 250=1.60%, 500=34.65% lat (msec) : 750=22.89%, 1000=16.45%, 2000=24.10%, >=2000=0.12% cpu : usr=0.09%, sys=0.71%, ctx=4626, 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=168KiB/s (172kB/s), 41.7KiB/s-42.5KiB/s (42.7kB/s-43.5kB/s), io=19.6MiB (20.5MB), run=118829-119260msec WRITE: bw=175KiB/s (179kB/s), 43.5KiB/s-44.2KiB/s (44.5kB/s-45.2kB/s), io=20.4MiB (21.4MB), run=118829-119260msec 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=145571: Sat Aug 15 17:58:10 2026 read: IOPS=1, BW=60.0MiB/s (63.9MB/s)(40.0MiB/656msec) slat (nsec): min=63909k, max=63909k, avg=63909335.00, stdev= 0.00 clat (nsec): min=569563k, max=569563k, avg=569563065.00, stdev= 0.00 lat (nsec): min=633478k, max=633478k, avg=633478116.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] lat (msec) : 750=100.00% cpu : usr=1.22%, sys=4.27%, ctx=44, majf=0, minf=11 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=60.0MiB/s (63.9MB/s), 60.0MiB/s-60.0MiB/s (63.9MB/s-63.9MB/s), io=40.0MiB (41.9MB), run=656-656msec 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