== sanity test 255a: check 'lfs ladvise -a willread' ===== 12:04:36 (1787846676)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.7342 s, 8.9 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-ffff91d148737000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.337664
Iter 1/10: OSS cache speed: 0.338391
Iter 1/10: ladvise speed: 0.295858
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.333166
Iter 2/10: OSS cache speed: 0.277071
Iter 2/10: ladvise speed: 0.317739
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.315583
Iter 3/10: OSS cache speed: 0.324286
Iter 3/10: ladvise speed: 0.317059
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.316039
Iter 4/10: OSS cache speed: 0.278343
Iter 4/10: ladvise speed: 0.328951
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.325724
Iter 5/10: OSS cache speed: 0.329437
Iter 5/10: ladvise speed: 0.330743
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.30247
Iter 6/10: OSS cache speed: 0.372386
Iter 6/10: ladvise speed: 0.358333
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.354129
Iter 7/10: OSS cache speed: 0.346492
Iter 7/10: ladvise speed: 0.357757
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.353063
Iter 8/10: OSS cache speed: 0.31956
Iter 8/10: ladvise speed: 0.360451
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.363185
Iter 9/10: OSS cache speed: 0.375517
Iter 9/10: ladvise speed: 0.338791
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.365903
Iter 10/10: OSS cache speed: 0.374219
Iter 10/10: ladvise speed: 0.312569
Average uncached read: .33
Average speedup with OSS cached read:  .33 = +0%
Average speedup with ladvise willread:  .33 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0