== sanity test 255a: check 'lfs ladvise -a willread' ===== 14:45:36 (1758739536)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 9.20276 s, 11.4 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-ffff8c1c48208000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.404397
Iter 1/10: OSS cache speed: 0.438337
Iter 1/10: ladvise speed: 0.417745
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.427406
Iter 2/10: OSS cache speed: 0.401953
Iter 2/10: ladvise speed: 0.437363
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.429011
Iter 3/10: OSS cache speed: 0.434791
Iter 3/10: ladvise speed: 0.427943
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.441231
Iter 4/10: OSS cache speed: 0.447348
Iter 4/10: ladvise speed: 0.47325
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.440005
Iter 5/10: OSS cache speed: 0.474906
Iter 5/10: ladvise speed: 0.532842
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.580696
Iter 6/10: OSS cache speed: 0.606131
Iter 6/10: ladvise speed: 0.53025
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.553251
Iter 7/10: OSS cache speed: 0.500829
Iter 7/10: ladvise speed: 0.636449
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.572188
Iter 8/10: OSS cache speed: 0.582208
Iter 8/10: ladvise speed: 0.594219
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.668612
Iter 9/10: OSS cache speed: 0.784003
Iter 9/10: ladvise speed: 0.73643
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.816319
Iter 10/10: OSS cache speed: 0.592617
Iter 10/10: ladvise speed: 0.591034
Average uncached read: .53
Average speedup with OSS cached read:  .52 = +-1%
Average speedup with ladvise willread:  .53 = +0%
Speedup with OSS cached read less than 20%,  got -1%. Skipping ladvise willread check.
fail_loc=0