== sanity test 255a: check 'lfs ladvise -a willread' ===== 03:04:25 (1788332665)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.3336 s, 8.5 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-ffff9b0c0afd6000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.415354
Iter 1/10: OSS cache speed: 0.410157
Iter 1/10: ladvise speed: 0.379903
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.417038
Iter 2/10: OSS cache speed: 0.382516
Iter 2/10: ladvise speed: 0.364076
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.401525
Iter 3/10: OSS cache speed: 0.433387
Iter 3/10: ladvise speed: 0.37072
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.332344
Iter 4/10: OSS cache speed: 0.34001
Iter 4/10: ladvise speed: 0.395798
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.422922
Iter 5/10: OSS cache speed: 0.345836
Iter 5/10: ladvise speed: 0.396069
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.315561
Iter 6/10: OSS cache speed: 0.292557
Iter 6/10: ladvise speed: 0.398032
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.356444
Iter 7/10: OSS cache speed: 0.418492
Iter 7/10: ladvise speed: 0.395988
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.408561
Iter 8/10: OSS cache speed: 0.419961
Iter 8/10: ladvise speed: 0.337321
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.401425
Iter 9/10: OSS cache speed: 0.357799
Iter 9/10: ladvise speed: 0.374781
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.427628
Iter 10/10: OSS cache speed: 0.423941
Iter 10/10: ladvise speed: 0.39896
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