== sanity test 255a: check 'lfs ladvise -a willread' ===== 17:50:00 (1788645000)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.7512 s, 8.9 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-ffff968b44c1c000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.385081
Iter 1/10: OSS cache speed: 0.409441
Iter 1/10: ladvise speed: 0.409259
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.36995
Iter 2/10: OSS cache speed: 0.419499
Iter 2/10: ladvise speed: 0.419486
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.378052
Iter 3/10: OSS cache speed: 0.335184
Iter 3/10: ladvise speed: 0.408954
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.371388
Iter 4/10: OSS cache speed: 0.391617
Iter 4/10: ladvise speed: 0.34652
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.396653
Iter 5/10: OSS cache speed: 0.369984
Iter 5/10: ladvise speed: 0.320981
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.412119
Iter 6/10: OSS cache speed: 0.389444
Iter 6/10: ladvise speed: 0.388383
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.381983
Iter 7/10: OSS cache speed: 0.423072
Iter 7/10: ladvise speed: 0.412553
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.399901
Iter 8/10: OSS cache speed: 0.433942
Iter 8/10: ladvise speed: 0.432584
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.418416
Iter 9/10: OSS cache speed: 0.390024
Iter 9/10: ladvise speed: 0.431683
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.413704
Iter 10/10: OSS cache speed: 0.436287
Iter 10/10: ladvise speed: 0.406918
Average uncached read: .39
Average speedup with OSS cached read:  .39 = +0%
Average speedup with ladvise willread:  .39 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0