== sanity test 255a: check 'lfs ladvise -a willread' ===== 00:13:45 (1783138425)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.9993 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-ffff97c682a69800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.33225
Iter 1/10: OSS cache speed: 0.419342
Iter 1/10: ladvise speed: 0.399995
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.415944
Iter 2/10: OSS cache speed: 0.380843
Iter 2/10: ladvise speed: 0.405987
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.45157
Iter 3/10: OSS cache speed: 0.348507
Iter 3/10: ladvise speed: 0.423576
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.37792
Iter 4/10: OSS cache speed: 0.47824
Iter 4/10: ladvise speed: 0.383097
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.377578
Iter 5/10: OSS cache speed: 0.436724
Iter 5/10: ladvise speed: 0.379878
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.398095
Iter 6/10: OSS cache speed: 0.390707
Iter 6/10: ladvise speed: 0.416626
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.380162
Iter 7/10: OSS cache speed: 0.381556
Iter 7/10: ladvise speed: 0.3833
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.393998
Iter 8/10: OSS cache speed: 0.435498
Iter 8/10: ladvise speed: 0.410078
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.475824
Iter 9/10: OSS cache speed: 0.424978
Iter 9/10: ladvise speed: 0.415675
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.500574
Iter 10/10: OSS cache speed: 0.492609
Iter 10/10: ladvise speed: 0.536119
Average uncached read: .41
Average speedup with OSS cached read:  .41 = +0%
Average speedup with ladvise willread:  .41 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0