== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:00:08 (1713430808)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.68594 s, 39.0 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
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.75504
Iter 1/10: OSS cache speed: 2.75254
Iter 1/10: ladvise speed: 2.69669
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.64535
Iter 2/10: OSS cache speed: 2.35232
Iter 2/10: ladvise speed: 2.59749
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.38243
Iter 3/10: OSS cache speed: 2.36923
Iter 3/10: ladvise speed: 2.44724
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.55769
Iter 4/10: OSS cache speed: 2.46115
Iter 4/10: ladvise speed: 2.46633
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.17791
Iter 5/10: OSS cache speed: 2.2725
Iter 5/10: ladvise speed: 2.26227
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.39314
Iter 6/10: OSS cache speed: 2.37543
Iter 6/10: ladvise speed: 2.39607
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.07528
Iter 7/10: OSS cache speed: 1.99502
Iter 7/10: ladvise speed: 2.36825
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.71364
Iter 8/10: OSS cache speed: 2.48321
Iter 8/10: ladvise speed: 2.33056
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.33982
Iter 9/10: OSS cache speed: 2.00682
Iter 9/10: ladvise speed: 1.72948
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.97509
Iter 10/10: OSS cache speed: 1.71088
Iter 10/10: ladvise speed: 1.72451
Average uncached read: 2.40
Average speedup with OSS cached read: 2.27 = +-5.41%
Average speedup with ladvise willread: 2.30 = +-4.16%
Speedup with OSS cached read less than 20%, got -5.41%. Skipping ladvise willread check.
fail_loc=0