== sanity test 123ab: verify statahead work by using statx ========================================================== 00:48:08 (1780980488)
total: 100 open/close in 1.42 seconds: 70.46 ops/second
llite.lustre-ffff916c502a0800.statahead_max=0
100

real	0m0.909s
user	0m0.011s
sys	0m0.107s
statx -l 100 files without statahead: 1 sec
llite.lustre-ffff916c502a0800.statahead_max=32
32
100

real	0m0.380s
user	0m0.004s
sys	0m0.044s
statx -l 100 files with statahead: 1 sec
statahead total: 27
statahead wrong: 0
agl total: 27
 - open/close 814 (time 1780980509.28 total 10.00 last 81.39)
total: 900 open/close in 10.76 seconds: 83.61 ops/second
llite.lustre-ffff916c502a0800.statahead_max=0
1000

real	0m11.484s
user	0m0.066s
sys	0m1.107s
statx -l 1000 files without statahead: 12 sec
llite.lustre-ffff916c502a0800.statahead_max=32
32
1000

real	0m3.556s
user	0m0.035s
sys	0m0.348s
statx -l 1000 files with statahead: 4 sec
statahead total: 28
statahead wrong: 0
agl total: 28
statx -l done
rm -r /mnt/lustre/d123ab.sanity/: 9 seconds
rm done
statahead total: 28
statahead wrong: 0
agl total: 28