== sanity test 255a: check 'lfs ladvise -a willread' ===== 00:34:02 (1788842042)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.5866 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-ffff8bcb05c6e000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.377482
Iter 1/10: OSS cache speed: 0.345271
Iter 1/10: ladvise speed: 0.292952
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.313803
Iter 2/10: OSS cache speed: 0.316004
Iter 2/10: ladvise speed: 0.349252
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.348698
Iter 3/10: OSS cache speed: 0.345627
Iter 3/10: ladvise speed: 0.33322
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.316785
Iter 4/10: OSS cache speed: 0.310434
Iter 4/10: ladvise speed: 0.310305
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.355472
Iter 5/10: OSS cache speed: 0.295488
Iter 5/10: ladvise speed: 0.357235
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.336055
Iter 6/10: OSS cache speed: 0.33653
Iter 6/10: ladvise speed: 0.335185
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.35707
Iter 7/10: OSS cache speed: 0.323805
Iter 7/10: ladvise speed: 0.346956
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.340033
Iter 8/10: OSS cache speed: 0.35249
Iter 8/10: ladvise speed: 0.345126
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.304154
Iter 9/10: OSS cache speed: 0.348624
Iter 9/10: ladvise speed: 0.354462
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.308025
Iter 10/10: OSS cache speed: 0.339693
Iter 10/10: ladvise speed: 0.313951
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