== sanity test 255a: check 'lfs ladvise -a willread' ===== 19:21:53 (1746141713)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 4.39467 s, 23.9 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-ffff88012aac5800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.870191
Iter 1/10: OSS cache speed: 0.78606
Iter 1/10: ladvise speed: 0.91826
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.863715
Iter 2/10: OSS cache speed: 0.927898
Iter 2/10: ladvise speed: 0.916802
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.90248
Iter 3/10: OSS cache speed: 0.862513
Iter 3/10: ladvise speed: 0.801049
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.839512
Iter 4/10: OSS cache speed: 0.89186
Iter 4/10: ladvise speed: 0.908152
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.83974
Iter 5/10: OSS cache speed: 0.8978
Iter 5/10: ladvise speed: 0.861018
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.848375
Iter 6/10: OSS cache speed: 0.872839
Iter 6/10: ladvise speed: 0.791378
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.808318
Iter 7/10: OSS cache speed: 0.739085
Iter 7/10: ladvise speed: 0.700887
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.773438
Iter 8/10: OSS cache speed: 0.756741
Iter 8/10: ladvise speed: 0.709821
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.719434
Iter 9/10: OSS cache speed: 0.782327
Iter 9/10: ladvise speed: 0.702968
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.758117
Iter 10/10: OSS cache speed: 0.746183
Iter 10/10: ladvise speed: 0.909729
Average uncached read: .82
Average speedup with OSS cached read:  .82 = +0%
Average speedup with ladvise willread:  .82 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0