== sanity test 255a: check 'lfs ladvise -a willread' ===== 12:46:28 (1788972388)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.1468 s, 7.4 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-ffff8e1f84b23000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.32814
Iter 1/10: OSS cache speed: 0.353335
Iter 1/10: ladvise speed: 0.356843
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.341291
Iter 2/10: OSS cache speed: 0.34475
Iter 2/10: ladvise speed: 0.325718
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.308133
Iter 3/10: OSS cache speed: 0.268556
Iter 3/10: ladvise speed: 0.312884
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.300813
Iter 4/10: OSS cache speed: 0.341757
Iter 4/10: ladvise speed: 0.307878
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.264671
Iter 5/10: OSS cache speed: 0.290996
Iter 5/10: ladvise speed: 0.292962
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.300495
Iter 6/10: OSS cache speed: 0.343988
Iter 6/10: ladvise speed: 0.321988
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.338634
Iter 7/10: OSS cache speed: 0.328993
Iter 7/10: ladvise speed: 0.368498
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.380681
Iter 8/10: OSS cache speed: 0.29924
Iter 8/10: ladvise speed: 0.339549
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.38904
Iter 9/10: OSS cache speed: 0.408783
Iter 9/10: ladvise speed: 0.415428
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.350527
Iter 10/10: OSS cache speed: 0.385143
Iter 10/10: ladvise speed: 0.36964
Average uncached read: .33
Average speedup with OSS cached read:  .33 = +0%
Average speedup with ladvise willread:  .34 = +3%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0