== sanity test 123ab: verify statahead work by using statx ========================================================== 15:13:31 (1776194011)
striped dir -i1 -c2 -H all_char /mnt/lustre/d123ab.sanity
total: 100 open/close in 1.77 seconds: 56.61 ops/second
llite.lustre-ffff93a6c69ae000.statahead_max=0
100

real	0m1.392s
user	0m0.009s
sys	0m0.120s
statx -l 100 files without statahead: 2 sec
llite.lustre-ffff93a6c69ae000.statahead_max=32
32
100

real	0m0.325s
user	0m0.005s
sys	0m0.047s
statx -l 100 files with statahead: 1 sec
statahead total: 28
statahead wrong: 0
agl total: 28
 - open/close 613 (time 1776194032.67 total 10.01 last 61.24)
total: 900 open/close in 14.58 seconds: 61.73 ops/second
llite.lustre-ffff93a6c69ae000.statahead_max=0
1000

real	0m16.289s
user	0m0.079s
sys	0m1.178s
statx -l 1000 files without statahead: 16 sec
llite.lustre-ffff93a6c69ae000.statahead_max=32
32
1000

real	0m3.322s
user	0m0.046s
sys	0m0.422s
statx -l 1000 files with statahead: 3 sec
statahead total: 29
statahead wrong: 0
agl total: 29
statx -l done
rm -r /mnt/lustre/d123ab.sanity/: 12 seconds
rm done
statahead total: 29
statahead wrong: 0
agl total: 29