== sanity test 255a: check 'lfs ladvise -a willread' ===== 06:55:35 (1787396135)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.4586 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-ffff892098859000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.427864
Iter 1/10: OSS cache speed: 0.404043
Iter 1/10: ladvise speed: 0.452536
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.414366
Iter 2/10: OSS cache speed: 0.364743
Iter 2/10: ladvise speed: 0.417625
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.412207
Iter 3/10: OSS cache speed: 0.431435
Iter 3/10: ladvise speed: 0.389682
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.437487
Iter 4/10: OSS cache speed: 0.427588
Iter 4/10: ladvise speed: 0.423266
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.40792
Iter 5/10: OSS cache speed: 0.388375
Iter 5/10: ladvise speed: 0.347176
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.360442
Iter 6/10: OSS cache speed: 0.40182
Iter 6/10: ladvise speed: 0.438757
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.420982
Iter 7/10: OSS cache speed: 0.446542
Iter 7/10: ladvise speed: 0.446798
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.459183
Iter 8/10: OSS cache speed: 0.430565
Iter 8/10: ladvise speed: 0.434698
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.425512
Iter 9/10: OSS cache speed: 0.437072
Iter 9/10: ladvise speed: 0.461162
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.390666
Iter 10/10: OSS cache speed: 0.456134
Iter 10/10: ladvise speed: 0.445855
Average uncached read: .41
Average speedup with OSS cached read:  .41 = +0%
Average speedup with ladvise willread:  .42 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0