== sanity test 255a: check 'lfs ladvise -a willread' ===== 01:14:29 (1781241269)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.0981 s, 8.7 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-ffff966c12741800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.376672
Iter 1/10: OSS cache speed: 0.328092
Iter 1/10: ladvise speed: 0.373772
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.439261
Iter 2/10: OSS cache speed: 0.441657
Iter 2/10: ladvise speed: 0.375966
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.394867
Iter 3/10: OSS cache speed: 0.424766
Iter 3/10: ladvise speed: 0.413379
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.410742
Iter 4/10: OSS cache speed: 0.427911
Iter 4/10: ladvise speed: 0.417125
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.411718
Iter 5/10: OSS cache speed: 0.373351
Iter 5/10: ladvise speed: 0.361174
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.438962
Iter 6/10: OSS cache speed: 0.432559
Iter 6/10: ladvise speed: 0.438359
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.415242
Iter 7/10: OSS cache speed: 0.411887
Iter 7/10: ladvise speed: 0.398425
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.413059
Iter 8/10: OSS cache speed: 0.446828
Iter 8/10: ladvise speed: 0.460044
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.447571
Iter 9/10: OSS cache speed: 0.481536
Iter 9/10: ladvise speed: 0.466745
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.477529
Iter 10/10: OSS cache speed: 0.477066
Iter 10/10: ladvise speed: 0.500052
Average uncached read: .42
Average speedup with OSS cached read:  .42 = +0%
Average speedup with ladvise willread:  .42 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0