== sanity test 255a: check 'lfs ladvise -a willread' ===== 19:53:10 (1746143590)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 4.99102 s, 21.0 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-ffff8800b672a800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.674436
Iter 1/10: OSS cache speed: 0.644982
Iter 1/10: ladvise speed: 0.637414
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.65378
Iter 2/10: OSS cache speed: 0.624591
Iter 2/10: ladvise speed: 0.593202
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.632586
Iter 3/10: OSS cache speed: 0.673463
Iter 3/10: ladvise speed: 0.611891
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.624667
Iter 4/10: OSS cache speed: 0.646919
Iter 4/10: ladvise speed: 0.57631
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.578895
Iter 5/10: OSS cache speed: 0.603533
Iter 5/10: ladvise speed: 0.652415
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.594006
Iter 6/10: OSS cache speed: 0.577327
Iter 6/10: ladvise speed: 0.627647
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.610063
Iter 7/10: OSS cache speed: 0.638123
Iter 7/10: ladvise speed: 0.549551
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.573228
Iter 8/10: OSS cache speed: 0.54835
Iter 8/10: ladvise speed: 0.584924
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.608559
Iter 9/10: OSS cache speed: 0.609165
Iter 9/10: ladvise speed: 0.610777
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.624818
Iter 10/10: OSS cache speed: 0.613804
Iter 10/10: ladvise speed: 0.621927
Average uncached read: .61
Average speedup with OSS cached read:  .61 = +0%
Average speedup with ladvise willread:  .60 = +-1%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0