== sanity test 255a: check 'lfs ladvise -a willread' ===== 16:26:42 (1773606402)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.6421 s, 7.2 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-ffff9fccd10f2800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.42122
Iter 1/10: OSS cache speed: 0.378741
Iter 1/10: ladvise speed: 0.397232
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.393258
Iter 2/10: OSS cache speed: 0.427435
Iter 2/10: ladvise speed: 0.304643
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.377078
Iter 3/10: OSS cache speed: 0.442555
Iter 3/10: ladvise speed: 0.408827
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.321716
Iter 4/10: OSS cache speed: 0.395064
Iter 4/10: ladvise speed: 0.36636
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.349477
Iter 5/10: OSS cache speed: 0.342495
Iter 5/10: ladvise speed: 0.370321
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.407411
Iter 6/10: OSS cache speed: 0.33605
Iter 6/10: ladvise speed: 0.468357
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.340325
Iter 7/10: OSS cache speed: 0.377174
Iter 7/10: ladvise speed: 0.378941
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.467014
Iter 8/10: OSS cache speed: 0.460706
Iter 8/10: ladvise speed: 0.406506
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.464041
Iter 9/10: OSS cache speed: 0.39663
Iter 9/10: ladvise speed: 0.513848
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.456604
Iter 10/10: OSS cache speed: 0.405413
Iter 10/10: ladvise speed: 0.42419
Average uncached read: .39
Average speedup with OSS cached read:  .39 = +0%
Average speedup with ladvise willread:  .40 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0