== sanity test 255a: check 'lfs ladvise -a willread' ===== 19:23:48 (1788564228)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.6348 s, 8.3 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-ffff9cf4609cb800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.372908
Iter 1/10: OSS cache speed: 0.33457
Iter 1/10: ladvise speed: 0.363295
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.262177
Iter 2/10: OSS cache speed: 0.279828
Iter 2/10: ladvise speed: 0.313731
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.337309
Iter 3/10: OSS cache speed: 0.33744
Iter 3/10: ladvise speed: 0.359851
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.342057
Iter 4/10: OSS cache speed: 0.377662
Iter 4/10: ladvise speed: 0.3583
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.313686
Iter 5/10: OSS cache speed: 0.346513
Iter 5/10: ladvise speed: 0.341266
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.338161
Iter 6/10: OSS cache speed: 0.29926
Iter 6/10: ladvise speed: 0.337082
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.280359
Iter 7/10: OSS cache speed: 0.277858
Iter 7/10: ladvise speed: 0.368161
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.339211
Iter 8/10: OSS cache speed: 0.274658
Iter 8/10: ladvise speed: 0.291867
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.282378
Iter 9/10: OSS cache speed: 0.30233
Iter 9/10: ladvise speed: 0.301341
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.275065
Iter 10/10: OSS cache speed: 0.28553
Iter 10/10: ladvise speed: 0.317622
Average uncached read: .31
Average speedup with OSS cached read:  .31 = +0%
Average speedup with ladvise willread:  .33 = +6%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0