== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:48:47 (1789138127)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.6404 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-ffff91ed44cb5800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.369839
Iter 1/10: OSS cache speed: 0.417899
Iter 1/10: ladvise speed: 0.36041
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.355779
Iter 2/10: OSS cache speed: 0.35568
Iter 2/10: ladvise speed: 0.335669
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.32569
Iter 3/10: OSS cache speed: 0.30693
Iter 3/10: ladvise speed: 0.280751
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.291901
Iter 4/10: OSS cache speed: 0.33201
Iter 4/10: ladvise speed: 0.392353
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.2835
Iter 5/10: OSS cache speed: 0.347453
Iter 5/10: ladvise speed: 0.349323
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.356492
Iter 6/10: OSS cache speed: 0.378972
Iter 6/10: ladvise speed: 0.456168
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.364954
Iter 7/10: OSS cache speed: 0.389713
Iter 7/10: ladvise speed: 0.431921
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.492661
Iter 8/10: OSS cache speed: 0.333825
Iter 8/10: ladvise speed: 0.393996
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.423059
Iter 9/10: OSS cache speed: 0.430853
Iter 9/10: ladvise speed: 0.484416
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.34146
Iter 10/10: OSS cache speed: 0.371453
Iter 10/10: ladvise speed: 0.402265
Average uncached read: .36
Average speedup with OSS cached read:  .36 = +0%
Average speedup with ladvise willread:  .38 = +5%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0