== sanity test 123aa: verify statahead work ============== 12:22:30 (1776270150)
total: 100 open/close in 1.40 seconds: 71.31 ops/second
llite.lustre-ffff902506311000.statahead_max=0
101

real	0m1.272s
user	0m0.009s
sys	0m0.147s
ls -l 100 files without statahead: 1 sec
llite.lustre-ffff902506311000.statahead_max=32
32
101

real	0m0.354s
user	0m0.002s
sys	0m0.052s
ls -l 100 files with statahead: 0 sec
statahead total: 25
statahead wrong: 0
agl total: 25
 - open/close 653 (time 1776270171.59 total 10.01 last 65.25)
total: 900 open/close in 14.05 seconds: 64.04 ops/second
llite.lustre-ffff902506311000.statahead_max=0
1001

real	0m15.099s
user	0m0.034s
sys	0m1.234s
ls -l 1000 files without statahead: 15 sec
llite.lustre-ffff902506311000.statahead_max=32
32
1001

real	0m3.127s
user	0m0.022s
sys	0m0.389s
ls -l 1000 files with statahead: 3 sec
statahead total: 26
statahead wrong: 0
agl total: 26
ls -l done
rm -r /mnt/lustre/d123aa.sanity/: 11 seconds
rm done
statahead total: 26
statahead wrong: 0
agl total: 26