== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:59:56 (1787774396)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.4444 s, 8.4 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-ffff91561a59f000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.419935
Iter 1/10: OSS cache speed: 0.386891
Iter 1/10: ladvise speed: 0.397791
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.362054
Iter 2/10: OSS cache speed: 0.31158
Iter 2/10: ladvise speed: 0.389171
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.416256
Iter 3/10: OSS cache speed: 0.372378
Iter 3/10: ladvise speed: 0.376882
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.381486
Iter 4/10: OSS cache speed: 0.416731
Iter 4/10: ladvise speed: 0.39729
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.349047
Iter 5/10: OSS cache speed: 0.395102
Iter 5/10: ladvise speed: 0.419465
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.362698
Iter 6/10: OSS cache speed: 0.397597
Iter 6/10: ladvise speed: 0.405505
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.383413
Iter 7/10: OSS cache speed: 0.345597
Iter 7/10: ladvise speed: 0.41784
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.423946
Iter 8/10: OSS cache speed: 0.392413
Iter 8/10: ladvise speed: 0.395588
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.413265
Iter 9/10: OSS cache speed: 0.416221
Iter 9/10: ladvise speed: 0.377378
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.378374
Iter 10/10: OSS cache speed: 0.388655
Iter 10/10: ladvise speed: 0.311873
Average uncached read: .38
Average speedup with OSS cached read:  .38 = +0%
Average speedup with ladvise willread:  .38 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0