== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:47:31 (1788918451)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 10.9422 s, 9.6 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-ffff91aa462be800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.287511
Iter 1/10: OSS cache speed: 0.394938
Iter 1/10: ladvise speed: 0.4321
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.434026
Iter 2/10: OSS cache speed: 0.351776
Iter 2/10: ladvise speed: 0.304429
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.309245
Iter 3/10: OSS cache speed: 0.280965
Iter 3/10: ladvise speed: 0.431522
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.390669
Iter 4/10: OSS cache speed: 0.455861
Iter 4/10: ladvise speed: 0.536374
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.548131
Iter 5/10: OSS cache speed: 0.5843
Iter 5/10: ladvise speed: 0.56651
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.615857
Iter 6/10: OSS cache speed: 0.593409
Iter 6/10: ladvise speed: 0.596223
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.637521
Iter 7/10: OSS cache speed: 0.648853
Iter 7/10: ladvise speed: 0.526663
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.393686
Iter 8/10: OSS cache speed: 0.47708
Iter 8/10: ladvise speed: 0.420374
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.433915
Iter 9/10: OSS cache speed: 0.27816
Iter 9/10: ladvise speed: 0.349911
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.396218
Iter 10/10: OSS cache speed: 0.397172
Iter 10/10: ladvise speed: 0.352616
Average uncached read: .44
Average speedup with OSS cached read:  .44 = +0%
Average speedup with ladvise willread:  .45 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0