== sanity test 255a: check 'lfs ladvise -a willread' ===== 19:14:41 (1786749281)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 9.84017 s, 10.7 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-ffff8b9a032e2000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.423925
Iter 1/10: OSS cache speed: 0.428168
Iter 1/10: ladvise speed: 0.482467
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.492207
Iter 2/10: OSS cache speed: 0.451087
Iter 2/10: ladvise speed: 0.33812
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.38537
Iter 3/10: OSS cache speed: 0.472972
Iter 3/10: ladvise speed: 0.313185
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.377437
Iter 4/10: OSS cache speed: 0.416673
Iter 4/10: ladvise speed: 0.377171
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.40501
Iter 5/10: OSS cache speed: 0.375977
Iter 5/10: ladvise speed: 0.501833
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.444988
Iter 6/10: OSS cache speed: 0.411993
Iter 6/10: ladvise speed: 0.361278
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.39396
Iter 7/10: OSS cache speed: 0.387407
Iter 7/10: ladvise speed: 0.471025
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.409271
Iter 8/10: OSS cache speed: 0.439852
Iter 8/10: ladvise speed: 0.4156
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.445885
Iter 9/10: OSS cache speed: 0.440778
Iter 9/10: ladvise speed: 0.470696
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.445279
Iter 10/10: OSS cache speed: 0.384737
Iter 10/10: ladvise speed: 0.489245
Average uncached read: .42
Average speedup with OSS cached read:  .42 = +0%
Average speedup with ladvise willread:  .42 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0