== sanity test 255a: check 'lfs ladvise -a willread' ===== 20:59:30 (1790729970)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.6239 s, 8.3 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
llite.lustre-ffff9875030e1000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.361733
Iter 1/10: OSS cache speed: 0.364426
Iter 1/10: ladvise speed: 0.338293
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.346351
Iter 2/10: OSS cache speed: 0.360904
Iter 2/10: ladvise speed: 0.359512
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.382266
Iter 3/10: OSS cache speed: 0.313916
Iter 3/10: ladvise speed: 0.337581
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.385198
Iter 4/10: OSS cache speed: 0.355431
Iter 4/10: ladvise speed: 0.364896
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.32123
Iter 5/10: OSS cache speed: 0.335816
Iter 5/10: ladvise speed: 0.333423
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.341875
Iter 6/10: OSS cache speed: 0.341914
Iter 6/10: ladvise speed: 0.357908
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.35577
Iter 7/10: OSS cache speed: 0.364884
Iter 7/10: ladvise speed: 0.374437
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.381602
Iter 8/10: OSS cache speed: 0.395996
Iter 8/10: ladvise speed: 0.315972
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.331823
Iter 9/10: OSS cache speed: 0.350962
Iter 9/10: ladvise speed: 0.342919
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.336686
Iter 10/10: OSS cache speed: 0.319444
Iter 10/10: ladvise speed: 0.39152
Average uncached read: .35
Average speedup with OSS cached read:  .35 = +0%
Average speedup with ladvise willread:  .35 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0