== sanity test 255a: check 'lfs ladvise -a willread' ===== 01:01:23 (1788930083)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.6813 s, 7.7 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-ffff8c1fd0564800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.403366
Iter 1/10: OSS cache speed: 0.421691
Iter 1/10: ladvise speed: 0.39928
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.411026
Iter 2/10: OSS cache speed: 0.41752
Iter 2/10: ladvise speed: 0.407434
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.421817
Iter 3/10: OSS cache speed: 0.425313
Iter 3/10: ladvise speed: 0.425067
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.437866
Iter 4/10: OSS cache speed: 0.396074
Iter 4/10: ladvise speed: 0.433464
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.408537
Iter 5/10: OSS cache speed: 0.446633
Iter 5/10: ladvise speed: 0.469103
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.47811
Iter 6/10: OSS cache speed: 0.485207
Iter 6/10: ladvise speed: 0.448163
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.478345
Iter 7/10: OSS cache speed: 0.421013
Iter 7/10: ladvise speed: 0.422745
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.434409
Iter 8/10: OSS cache speed: 0.447834
Iter 8/10: ladvise speed: 0.457854
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.485144
Iter 9/10: OSS cache speed: 0.468675
Iter 9/10: ladvise speed: 0.479518
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.51006
Iter 10/10: OSS cache speed: 0.483056
Iter 10/10: ladvise speed: 0.477081
Average uncached read: .44
Average speedup with OSS cached read:  .44 = +0%
Average speedup with ladvise willread:  .44 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0