== sanity test 255a: check 'lfs ladvise -a willread' ===== 19:09:21 (1753744161)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 8.65774 s, 12.1 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-ffff9e3b08cda000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.408699
Iter 1/10: OSS cache speed: 0.461593
Iter 1/10: ladvise speed: 0.481779
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.483858
Iter 2/10: OSS cache speed: 0.314068
Iter 2/10: ladvise speed: 0.416952
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.417445
Iter 3/10: OSS cache speed: 0.405344
Iter 3/10: ladvise speed: 0.401602
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.411984
Iter 4/10: OSS cache speed: 0.413003
Iter 4/10: ladvise speed: 0.444501
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.411858
Iter 5/10: OSS cache speed: 0.388164
Iter 5/10: ladvise speed: 0.41643
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.414978
Iter 6/10: OSS cache speed: 0.3816
Iter 6/10: ladvise speed: 0.342086
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.417544
Iter 7/10: OSS cache speed: 0.398947
Iter 7/10: ladvise speed: 0.422953
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.425319
Iter 8/10: OSS cache speed: 0.436701
Iter 8/10: ladvise speed: 0.416742
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.414465
Iter 9/10: OSS cache speed: 0.421381
Iter 9/10: ladvise speed: 0.386855
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.446297
Iter 10/10: OSS cache speed: 0.49355
Iter 10/10: ladvise speed: 0.520924
Average uncached read: .42
Average speedup with OSS cached read:  .41 = +-2%
Average speedup with ladvise willread:  .42 = +0%
Speedup with OSS cached read less than 20%,  got -2%. Skipping ladvise willread check.
fail_loc=0