== sanity test 255a: check 'lfs ladvise -a willread' ===== 08:51:46 (1788871906)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.1938 s, 7.9 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-ffff997682c48000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.443174
Iter 1/10: OSS cache speed: 0.406265
Iter 1/10: ladvise speed: 0.439959
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.393636
Iter 2/10: OSS cache speed: 0.431425
Iter 2/10: ladvise speed: 0.443558
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.366184
Iter 3/10: OSS cache speed: 0.364575
Iter 3/10: ladvise speed: 0.379738
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.353825
Iter 4/10: OSS cache speed: 0.40669
Iter 4/10: ladvise speed: 0.431282
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.366724
Iter 5/10: OSS cache speed: 0.35016
Iter 5/10: ladvise speed: 0.334895
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.334475
Iter 6/10: OSS cache speed: 0.354144
Iter 6/10: ladvise speed: 0.4168
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.37412
Iter 7/10: OSS cache speed: 0.363319
Iter 7/10: ladvise speed: 0.449911
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.481188
Iter 8/10: OSS cache speed: 0.454144
Iter 8/10: ladvise speed: 0.471463
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.432695
Iter 9/10: OSS cache speed: 0.506914
Iter 9/10: ladvise speed: 0.457675
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.468008
Iter 10/10: OSS cache speed: 0.419081
Iter 10/10: ladvise speed: 0.453329
Average uncached read: .40
Average speedup with OSS cached read:  .40 = +0%
Average speedup with ladvise willread:  .42 = +5%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0