== sanity test 123aa: verify statahead work ============== 10:17:20 (1761315440)
striped dir -i1 -c2 -H crush /mnt/lustre/d123aa.sanity
total: 100 open/close in 1.01 seconds: 99.25 ops/second
llite.lustre-ffff8c664913d000.statahead_max=0
101

real	0m0.896s
user	0m0.004s
sys	0m0.110s
ls -l 100 files without statahead: 1 sec
llite.lustre-ffff8c664913d000.statahead_max=32
32
101

real	0m0.238s
user	0m0.004s
sys	0m0.055s
ls -l 100 files with statahead: 0 sec
statahead total: 26
statahead wrong: 0
agl total: 26
total: 900 open/close in 8.39 seconds: 107.22 ops/second
llite.lustre-ffff8c664913d000.statahead_max=0
1001

real	0m9.807s
user	0m0.034s
sys	0m1.052s
ls -l 1000 files without statahead: 9 sec
llite.lustre-ffff8c664913d000.statahead_max=32
32
1001

real	0m1.635s
user	0m0.020s
sys	0m0.369s
ls -l 1000 files with statahead: 2 sec
statahead total: 27
statahead wrong: 0
agl total: 27
ls -l done
rm -r /mnt/lustre/d123aa.sanity/: 8 seconds
rm done
statahead total: 27
statahead wrong: 0
agl total: 27