== sanity test 255a: check 'lfs ladvise -a willread' ===== 14:35:01 (1788201301)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.6938 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-ffff97fb88b0e800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.344465
Iter 1/10: OSS cache speed: 0.340423
Iter 1/10: ladvise speed: 0.391958
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.375377
Iter 2/10: OSS cache speed: 0.393966
Iter 2/10: ladvise speed: 0.385739
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.383319
Iter 3/10: OSS cache speed: 0.387309
Iter 3/10: ladvise speed: 0.32635
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.38301
Iter 4/10: OSS cache speed: 0.291639
Iter 4/10: ladvise speed: 0.320891
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.34355
Iter 5/10: OSS cache speed: 0.336696
Iter 5/10: ladvise speed: 0.339436
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.32964
Iter 6/10: OSS cache speed: 0.28932
Iter 6/10: ladvise speed: 0.331848
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.338616
Iter 7/10: OSS cache speed: 0.330419
Iter 7/10: ladvise speed: 0.341525
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.306363
Iter 8/10: OSS cache speed: 0.316306
Iter 8/10: ladvise speed: 0.356831
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.311296
Iter 9/10: OSS cache speed: 0.353778
Iter 9/10: ladvise speed: 0.318511
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.323735
Iter 10/10: OSS cache speed: 0.324829
Iter 10/10: ladvise speed: 0.351416
Average uncached read: .34
Average speedup with OSS cached read:  .33 = +-2%
Average speedup with ladvise willread:  .34 = +0%
Speedup with OSS cached read less than 20%,  got -2%. Skipping ladvise willread check.
fail_loc=0