== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:10:52 (1764792652)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 10.7253 s, 9.8 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-ffff999f602a3000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.443344
Iter 1/10: OSS cache speed: 0.35538
Iter 1/10: ladvise speed: 0.406913
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.447644
Iter 2/10: OSS cache speed: 0.452819
Iter 2/10: ladvise speed: 0.342952
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.475297
Iter 3/10: OSS cache speed: 0.213317
Iter 3/10: ladvise speed: 1.76831
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.72963
Iter 4/10: OSS cache speed: 1.5944
Iter 4/10: ladvise speed: 1.30712
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.71247
Iter 5/10: OSS cache speed: 1.75788
Iter 5/10: ladvise speed: 1.66035
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.82721
Iter 6/10: OSS cache speed: 1.84203
Iter 6/10: ladvise speed: 2.07108
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.28534
Iter 7/10: OSS cache speed: 2.09745
Iter 7/10: ladvise speed: 2.02229
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.679674
Iter 8/10: OSS cache speed: 1.11382
Iter 8/10: ladvise speed: 0.525879
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.909582
Iter 9/10: OSS cache speed: 1.40744
Iter 9/10: ladvise speed: 2.09179
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.06091
Iter 10/10: OSS cache speed: 1.76227
Iter 10/10: ladvise speed: 0.424743
Average uncached read: 1.25
Average speedup with OSS cached read:  1.25 = +0%
Average speedup with ladvise willread:  1.26 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0