== sanity test 255a: check 'lfs ladvise -a willread' ===== 08:35:36 (1787315736)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.6187 s, 9.0 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-ffffa06103fe0800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.430291
Iter 1/10: OSS cache speed: 0.388726
Iter 1/10: ladvise speed: 0.395974
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.458379
Iter 2/10: OSS cache speed: 0.421821
Iter 2/10: ladvise speed: 0.39905
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.40462
Iter 3/10: OSS cache speed: 0.414212
Iter 3/10: ladvise speed: 0.340737
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.405872
Iter 4/10: OSS cache speed: 0.358542
Iter 4/10: ladvise speed: 0.378378
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.36788
Iter 5/10: OSS cache speed: 0.433797
Iter 5/10: ladvise speed: 0.434721
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.410009
Iter 6/10: OSS cache speed: 0.403859
Iter 6/10: ladvise speed: 0.375214
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.397788
Iter 7/10: OSS cache speed: 0.46011
Iter 7/10: ladvise speed: 0.447832
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.400752
Iter 8/10: OSS cache speed: 0.410575
Iter 8/10: ladvise speed: 0.453686
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.398013
Iter 9/10: OSS cache speed: 0.381123
Iter 9/10: ladvise speed: 0.434243
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.436948
Iter 10/10: OSS cache speed: 0.453533
Iter 10/10: ladvise speed: 0.396369
Average uncached read: .41
Average speedup with OSS cached read:  .41 = +0%
Average speedup with ladvise willread:  .40 = +-2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0