== sanity test 255a: check 'lfs ladvise -a willread' ===== 18:22:56 (1788214976)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.5638 s, 8.3 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-ffff9ce405db3000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.329782
Iter 1/10: OSS cache speed: 0.327329
Iter 1/10: ladvise speed: 0.423515
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.369303
Iter 2/10: OSS cache speed: 0.410862
Iter 2/10: ladvise speed: 0.412406
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.359806
Iter 3/10: OSS cache speed: 0.386386
Iter 3/10: ladvise speed: 0.387603
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.466762
Iter 4/10: OSS cache speed: 0.387849
Iter 4/10: ladvise speed: 0.405832
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.429747
Iter 5/10: OSS cache speed: 0.455191
Iter 5/10: ladvise speed: 0.419915
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.418905
Iter 6/10: OSS cache speed: 0.387312
Iter 6/10: ladvise speed: 0.444702
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.542221
Iter 7/10: OSS cache speed: 0.509312
Iter 7/10: ladvise speed: 0.48899
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.458794
Iter 8/10: OSS cache speed: 0.471309
Iter 8/10: ladvise speed: 0.440683
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.484635
Iter 9/10: OSS cache speed: 0.450768
Iter 9/10: ladvise speed: 0.450166
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.444489
Iter 10/10: OSS cache speed: 0.477162
Iter 10/10: ladvise speed: 0.521905
Average uncached read: .43
Average speedup with OSS cached read:  .42 = +-2%
Average speedup with ladvise willread:  .43 = +0%
Speedup with OSS cached read less than 20%,  got -2%. Skipping ladvise willread check.
fail_loc=0