== sanity test 255a: check 'lfs ladvise -a willread' ===== 19:43:54 (1763340234)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 9.80932 s, 10.7 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-ffff9f7718263800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.362423
Iter 1/10: OSS cache speed: 0.379845
Iter 1/10: ladvise speed: 0.343366
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.351351
Iter 2/10: OSS cache speed: 0.336061
Iter 2/10: ladvise speed: 0.387555
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.391308
Iter 3/10: OSS cache speed: 0.336401
Iter 3/10: ladvise speed: 0.355271
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.349639
Iter 4/10: OSS cache speed: 0.389316
Iter 4/10: ladvise speed: 0.390738
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.402214
Iter 5/10: OSS cache speed: 0.39199
Iter 5/10: ladvise speed: 0.389483
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.389773
Iter 6/10: OSS cache speed: 0.378899
Iter 6/10: ladvise speed: 0.430342
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.416362
Iter 7/10: OSS cache speed: 0.390329
Iter 7/10: ladvise speed: 0.36469
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.406908
Iter 8/10: OSS cache speed: 0.409683
Iter 8/10: ladvise speed: 0.378711
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.387644
Iter 9/10: OSS cache speed: 0.384082
Iter 9/10: ladvise speed: 0.369053
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.383518
Iter 10/10: OSS cache speed: 0.388869
Iter 10/10: ladvise speed: 0.381842
Average uncached read: .38
Average speedup with OSS cached read:  .37 = +-2%
Average speedup with ladvise willread:  .37 = +-2%
Speedup with OSS cached read less than 20%,  got -2%. Skipping ladvise willread check.
fail_loc=0