== sanity test 123ab: verify statahead work by using statx ========================================================== 12:31:47 (1776270707)
striped dir -i1 -c2 -H crush /mnt/lustre/d123ab.sanity
total: 100 open/close in 1.19 seconds: 83.79 ops/second
llite.lustre-ffff92268491a000.statahead_max=0
100

real	0m1.027s
user	0m0.007s
sys	0m0.117s
statx -l 100 files without statahead: 1 sec
llite.lustre-ffff92268491a000.statahead_max=32
32
100

real	0m0.268s
user	0m0.005s
sys	0m0.047s
statx -l 100 files with statahead: 0 sec
statahead total: 28
statahead wrong: 0
agl total: 28
total: 900 open/close in 8.82 seconds: 102.04 ops/second
llite.lustre-ffff92268491a000.statahead_max=0
1000

real	0m10.180s
user	0m0.074s
sys	0m1.025s
statx -l 1000 files without statahead: 10 sec
llite.lustre-ffff92268491a000.statahead_max=32
32
1000

real	0m1.760s
user	0m0.031s
sys	0m0.354s
statx -l 1000 files with statahead: 1 sec
statahead total: 29
statahead wrong: 0
agl total: 29
statx -l done
rm -r /mnt/lustre/d123ab.sanity/: 7 seconds
rm done
statahead total: 29
statahead wrong: 0
agl total: 29