== sanity test 255a: check 'lfs ladvise -a willread' ===== 16:20:14 (1746130814)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 4.65868 s, 22.5 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-ffff8800b366f800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.701402
Iter 1/10: OSS cache speed: 0.676613
Iter 1/10: ladvise speed: 0.71353
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.700438
Iter 2/10: OSS cache speed: 0.662841
Iter 2/10: ladvise speed: 0.637897
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.629311
Iter 3/10: OSS cache speed: 0.621897
Iter 3/10: ladvise speed: 0.614887
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.608476
Iter 4/10: OSS cache speed: 0.628668
Iter 4/10: ladvise speed: 0.625261
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.63076
Iter 5/10: OSS cache speed: 0.643696
Iter 5/10: ladvise speed: 0.599267
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.641267
Iter 6/10: OSS cache speed: 0.638143
Iter 6/10: ladvise speed: 0.603067
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.646437
Iter 7/10: OSS cache speed: 0.636747
Iter 7/10: ladvise speed: 0.655034
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.672783
Iter 8/10: OSS cache speed: 0.617496
Iter 8/10: ladvise speed: 0.659994
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.615379
Iter 9/10: OSS cache speed: 0.660216
Iter 9/10: ladvise speed: 0.626735
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.646425
Iter 10/10: OSS cache speed: 0.659091
Iter 10/10: ladvise speed: 0.66825
Average uncached read: .64
Average speedup with OSS cached read:  .64 = +0%
Average speedup with ladvise willread:  .64 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0