== sanity test 123aa: verify statahead work ============== 00:47:07 (1780980427)
total: 100 open/close in 1.46 seconds: 68.28 ops/second
llite.lustre-ffff916c502a0800.statahead_max=0
101

real	0m1.091s
user	0m0.006s
sys	0m0.119s
ls -l 100 files without statahead: 1 sec
llite.lustre-ffff916c502a0800.statahead_max=32
32
101

real	0m0.424s
user	0m0.002s
sys	0m0.043s
ls -l 100 files with statahead: 1 sec
statahead total: 25
statahead wrong: 0
agl total: 25
 - open/close 828 (time 1780980447.39 total 10.00 last 82.79)
total: 900 open/close in 10.94 seconds: 82.26 ops/second
llite.lustre-ffff916c502a0800.statahead_max=0
1001

real	0m12.272s
user	0m0.033s
sys	0m1.101s
ls -l 1000 files without statahead: 12 sec
llite.lustre-ffff916c502a0800.statahead_max=32
32
1001

real	0m3.498s
user	0m0.015s
sys	0m0.325s
ls -l 1000 files with statahead: 4 sec
statahead total: 26
statahead wrong: 0
agl total: 26
ls -l done
rm -r /mnt/lustre/d123aa.sanity/: 10 seconds
rm done
statahead total: 26
statahead wrong: 0
agl total: 26