== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:18:05 (1708827485)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.0454 s, 51.3 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
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.91221
Iter 1/10: OSS cache speed: 2.40833
Iter 1/10: ladvise speed: 2.48393
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.37464
Iter 2/10: OSS cache speed: 2.4999
Iter 2/10: ladvise speed: 2.54494
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.54956
Iter 3/10: OSS cache speed: 2.47587
Iter 3/10: ladvise speed: 2.65266
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.38849
Iter 4/10: OSS cache speed: 2.51002
Iter 4/10: ladvise speed: 2.61053
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.7
Iter 5/10: OSS cache speed: 2.5472
Iter 5/10: ladvise speed: 2.46818
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.55863
Iter 6/10: OSS cache speed: 2.58391
Iter 6/10: ladvise speed: 2.51129
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.45207
Iter 7/10: OSS cache speed: 2.54224
Iter 7/10: ladvise speed: 2.49272
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.48592
Iter 8/10: OSS cache speed: 2.49849
Iter 8/10: ladvise speed: 2.70963
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.76464
Iter 9/10: OSS cache speed: 2.77461
Iter 9/10: ladvise speed: 2.89598
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.67134
Iter 10/10: OSS cache speed: 2.61771
Iter 10/10: ladvise speed: 2.39139
Average uncached read: 2.58
Average speedup with OSS cached read: 2.54 = +-1.55%
Average speedup with ladvise willread: 2.57 = +-.38%
Speedup with OSS cached read less than 20%, got -1.55%. Skipping ladvise willread check.
fail_loc=0