== sanity test 123aa: verify statahead work ============== 12:31:06 (1776270666)
striped dir -i1 -c2 -H crush /mnt/lustre/d123aa.sanity
total: 100 open/close in 1.02 seconds: 97.74 ops/second
llite.lustre-ffff92268491a000.statahead_max=0
101

real	0m0.963s
user	0m0.001s
sys	0m0.119s
ls -l 100 files without statahead: 1 sec
llite.lustre-ffff92268491a000.statahead_max=32
32
101

real	0m0.184s
user	0m0.001s
sys	0m0.060s
ls -l 100 files with statahead: 1 sec
statahead total: 26
statahead wrong: 0
agl total: 26
total: 900 open/close in 7.82 seconds: 115.02 ops/second
llite.lustre-ffff92268491a000.statahead_max=0
1001

real	0m10.157s
user	0m0.023s
sys	0m1.022s
ls -l 1000 files without statahead: 11 sec
llite.lustre-ffff92268491a000.statahead_max=32
32
1001

real	0m1.299s
user	0m0.020s
sys	0m0.384s
ls -l 1000 files with statahead: 1 sec
statahead total: 27
statahead wrong: 0
agl total: 27
ls -l done
rm -r /mnt/lustre/d123aa.sanity/: 6 seconds
rm done
statahead total: 27
statahead wrong: 0
agl total: 27