== sanity test 255a: check 'lfs ladvise -a willread' ===== 20:12:54 (1789603974)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.4106 s, 8.4 MB/s
ladvise: range [2, 1] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: range [2, 2] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: conflicting arguments of -l and -e
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

Synchronous ladvise should wait
fail_val=8
fail_loc=0x237
Asynchronous ladvise shouldn't wait
llite.lustre-ffff9aca1888a000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.38157
Iter 1/10: OSS cache speed: 0.31495
Iter 1/10: ladvise speed: 0.350594
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.375768
Iter 2/10: OSS cache speed: 0.38028
Iter 2/10: ladvise speed: 0.372748
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.33353
Iter 3/10: OSS cache speed: 0.376243
Iter 3/10: ladvise speed: 0.381455
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.36634
Iter 4/10: OSS cache speed: 0.360489
Iter 4/10: ladvise speed: 0.339624
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.311674
Iter 5/10: OSS cache speed: 0.357721
Iter 5/10: ladvise speed: 0.380816
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.384668
Iter 6/10: OSS cache speed: 0.391692
Iter 6/10: ladvise speed: 0.337715
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.375503
Iter 7/10: OSS cache speed: 0.332068
Iter 7/10: ladvise speed: 0.386192
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.370008
Iter 8/10: OSS cache speed: 0.378239
Iter 8/10: ladvise speed: 0.341597
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.360561
Iter 9/10: OSS cache speed: 0.374646
Iter 9/10: ladvise speed: 0.360181
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.342983
Iter 10/10: OSS cache speed: 0.368002
Iter 10/10: ladvise speed: 0.362769
Average uncached read: .36
Average speedup with OSS cached read:  .36 = +0%
Average speedup with ladvise willread:  .36 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0