== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:36:02 (1782610562)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 10.7154 s, 9.8 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-ffff942587f51000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.427611
Iter 1/10: OSS cache speed: 0.409058
Iter 1/10: ladvise speed: 0.445161
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.404143
Iter 2/10: OSS cache speed: 0.363884
Iter 2/10: ladvise speed: 0.400337
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.394933
Iter 3/10: OSS cache speed: 0.420134
Iter 3/10: ladvise speed: 0.370628
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.333967
Iter 4/10: OSS cache speed: 0.458905
Iter 4/10: ladvise speed: 0.413415
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.349054
Iter 5/10: OSS cache speed: 0.374251
Iter 5/10: ladvise speed: 0.421519
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.384566
Iter 6/10: OSS cache speed: 0.330322
Iter 6/10: ladvise speed: 0.399249
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.399278
Iter 7/10: OSS cache speed: 0.417308
Iter 7/10: ladvise speed: 0.341482
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.447355
Iter 8/10: OSS cache speed: 0.41931
Iter 8/10: ladvise speed: 0.477836
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.463621
Iter 9/10: OSS cache speed: 0.395014
Iter 9/10: ladvise speed: 0.372083
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.424303
Iter 10/10: OSS cache speed: 0.418426
Iter 10/10: ladvise speed: 0.414066
Average uncached read: .40
Average speedup with OSS cached read:  .40 = +0%
Average speedup with ladvise willread:  .40 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0