== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:48:07 (1789609687)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.2968 s, 7.3 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-ffff94ec0863f800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.333204
Iter 1/10: OSS cache speed: 0.352191
Iter 1/10: ladvise speed: 0.344826
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.351364
Iter 2/10: OSS cache speed: 0.329105
Iter 2/10: ladvise speed: 0.355514
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.305879
Iter 3/10: OSS cache speed: 0.346483
Iter 3/10: ladvise speed: 0.331985
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.34831
Iter 4/10: OSS cache speed: 0.35663
Iter 4/10: ladvise speed: 0.346795
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.384834
Iter 5/10: OSS cache speed: 0.36746
Iter 5/10: ladvise speed: 0.351702
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.362068
Iter 6/10: OSS cache speed: 0.327791
Iter 6/10: ladvise speed: 0.342274
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.304723
Iter 7/10: OSS cache speed: 0.355247
Iter 7/10: ladvise speed: 0.323478
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.344729
Iter 8/10: OSS cache speed: 0.369028
Iter 8/10: ladvise speed: 0.332846
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.341896
Iter 9/10: OSS cache speed: 0.340431
Iter 9/10: ladvise speed: 0.327844
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.337284
Iter 10/10: OSS cache speed: 0.318261
Iter 10/10: ladvise speed: 0.334654
Average uncached read: .34
Average speedup with OSS cached read:  .34 = +0%
Average speedup with ladvise willread:  .33 = +-2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0