== sanity test 255a: check 'lfs ladvise -a willread' ===== 04:10:34 (1788509434)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.6154 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-ffff97a221e68000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.362529
Iter 1/10: OSS cache speed: 0.358278
Iter 1/10: ladvise speed: 0.314848
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.285133
Iter 2/10: OSS cache speed: 0.314884
Iter 2/10: ladvise speed: 0.304009
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.303489
Iter 3/10: OSS cache speed: 0.350025
Iter 3/10: ladvise speed: 0.355785
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.319778
Iter 4/10: OSS cache speed: 0.286905
Iter 4/10: ladvise speed: 0.30753
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.332608
Iter 5/10: OSS cache speed: 0.360489
Iter 5/10: ladvise speed: 0.300105
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.330373
Iter 6/10: OSS cache speed: 0.329485
Iter 6/10: ladvise speed: 0.353462
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.299092
Iter 7/10: OSS cache speed: 0.346502
Iter 7/10: ladvise speed: 0.337098
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.354465
Iter 8/10: OSS cache speed: 0.298572
Iter 8/10: ladvise speed: 0.368419
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.38655
Iter 9/10: OSS cache speed: 0.366503
Iter 9/10: ladvise speed: 0.367834
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.336866
Iter 10/10: OSS cache speed: 0.369109
Iter 10/10: ladvise speed: 0.292418
Average uncached read: .33
Average speedup with OSS cached read:  .33 = +0%
Average speedup with ladvise willread:  .33 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0