== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:51:29 (1786171889)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.9486 s, 7.5 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-ffff8ffe852ba800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.415238
Iter 1/10: OSS cache speed: 0.44702
Iter 1/10: ladvise speed: 0.430547
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.445174
Iter 2/10: OSS cache speed: 0.439202
Iter 2/10: ladvise speed: 0.419983
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.394823
Iter 3/10: OSS cache speed: 0.395183
Iter 3/10: ladvise speed: 0.432988
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.428406
Iter 4/10: OSS cache speed: 0.43194
Iter 4/10: ladvise speed: 0.436334
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.416014
Iter 5/10: OSS cache speed: 0.404099
Iter 5/10: ladvise speed: 0.417942
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.413932
Iter 6/10: OSS cache speed: 0.378572
Iter 6/10: ladvise speed: 0.431934
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.420559
Iter 7/10: OSS cache speed: 0.402816
Iter 7/10: ladvise speed: 0.400839
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.407674
Iter 8/10: OSS cache speed: 0.419811
Iter 8/10: ladvise speed: 0.408246
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.418612
Iter 9/10: OSS cache speed: 0.41619
Iter 9/10: ladvise speed: 0.388064
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.42186
Iter 10/10: OSS cache speed: 0.416154
Iter 10/10: ladvise speed: 0.419975
Average uncached read: .41
Average speedup with OSS cached read:  .41 = +0%
Average speedup with ladvise willread:  .41 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0