== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:14:46 (1746148486)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 5.74051 s, 18.3 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-ffff88012a67a800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.439457
Iter 1/10: OSS cache speed: 0.481003
Iter 1/10: ladvise speed: 0.473776
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.416785
Iter 2/10: OSS cache speed: 0.42841
Iter 2/10: ladvise speed: 0.437782
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.461342
Iter 3/10: OSS cache speed: 0.429747
Iter 3/10: ladvise speed: 0.490193
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.48848
Iter 4/10: OSS cache speed: 0.522047
Iter 4/10: ladvise speed: 0.448384
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.458597
Iter 5/10: OSS cache speed: 0.46382
Iter 5/10: ladvise speed: 0.467639
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.453951
Iter 6/10: OSS cache speed: 0.483991
Iter 6/10: ladvise speed: 0.423205
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.454665
Iter 7/10: OSS cache speed: 0.439678
Iter 7/10: ladvise speed: 0.41178
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.437566
Iter 8/10: OSS cache speed: 0.422468
Iter 8/10: ladvise speed: 0.434484
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.465916
Iter 9/10: OSS cache speed: 0.411575
Iter 9/10: ladvise speed: 0.455584
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.482326
Iter 10/10: OSS cache speed: 0.477461
Iter 10/10: ladvise speed: 0.528752
Average uncached read: .45
Average speedup with OSS cached read:  .45 = +0%
Average speedup with ladvise willread:  .45 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0