== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:53:19 (1781229199)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 10.2173 s, 10.3 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-ffff8cedd0f15000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.305824
Iter 1/10: OSS cache speed: 0.318361
Iter 1/10: ladvise speed: 0.313419
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.302132
Iter 2/10: OSS cache speed: 0.317069
Iter 2/10: ladvise speed: 0.351526
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.339919
Iter 3/10: OSS cache speed: 0.352232
Iter 3/10: ladvise speed: 0.308728
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.322039
Iter 4/10: OSS cache speed: 0.331935
Iter 4/10: ladvise speed: 0.359931
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.343237
Iter 5/10: OSS cache speed: 0.322736
Iter 5/10: ladvise speed: 0.369417
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.352006
Iter 6/10: OSS cache speed: 0.335984
Iter 6/10: ladvise speed: 0.299087
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.34965
Iter 7/10: OSS cache speed: 0.328639
Iter 7/10: ladvise speed: 0.360802
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.367472
Iter 8/10: OSS cache speed: 0.342046
Iter 8/10: ladvise speed: 0.362341
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.338751
Iter 9/10: OSS cache speed: 0.351665
Iter 9/10: ladvise speed: 0.284827
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.285773
Iter 10/10: OSS cache speed: 0.31196
Iter 10/10: ladvise speed: 0.287591
Average uncached read: .33
Average speedup with OSS cached read:  .33 = +0%
Average speedup with ladvise willread:  .32 = +-3%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0