== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:13:10 (1713402790)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.33743 s, 44.9 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
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.40085
Iter 1/10: OSS cache speed: 1.55821
Iter 1/10: ladvise speed: 1.6431
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.36457
Iter 2/10: OSS cache speed: 1.67727
Iter 2/10: ladvise speed: 1.63092
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.42861
Iter 3/10: OSS cache speed: 1.5757
Iter 3/10: ladvise speed: 1.61556
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.38286
Iter 4/10: OSS cache speed: 1.5931
Iter 4/10: ladvise speed: 1.55197
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.43235
Iter 5/10: OSS cache speed: 1.61145
Iter 5/10: ladvise speed: 1.81226
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.35082
Iter 6/10: OSS cache speed: 1.62515
Iter 6/10: ladvise speed: 1.5993
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.41199
Iter 7/10: OSS cache speed: 1.71923
Iter 7/10: ladvise speed: 1.59542
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.4092
Iter 8/10: OSS cache speed: 1.6435
Iter 8/10: ladvise speed: 1.71556
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.44335
Iter 9/10: OSS cache speed: 1.90473
Iter 9/10: ladvise speed: 1.64498
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.72294
Iter 10/10: OSS cache speed: 1.63707
Iter 10/10: ladvise speed: 1.78151
Average uncached read: 1.43
Average speedup with OSS cached read: 1.65 = +15.38%
Average speedup with ladvise willread: 1.65 = +15.38%
Speedup with OSS cached read less than 20%, got 15.38%. Skipping ladvise willread check.
fail_loc=0