== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:55:29 (1714402529)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 5.20269 s, 20.2 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: 0.896175
Iter 1/10: OSS cache speed: 0.123868
Iter 1/10: ladvise speed: 0.0987221
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.122795
Iter 2/10: OSS cache speed: 0.0739341
Iter 2/10: ladvise speed: 0.055815
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.232885
Iter 3/10: OSS cache speed: 0.803647
Iter 3/10: ladvise speed: 0.404212
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.64186
Iter 4/10: OSS cache speed: 0.579151
Iter 4/10: ladvise speed: 0.282795
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.39275
Iter 5/10: OSS cache speed: 1.06625
Iter 5/10: ladvise speed: 0.950258
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.490456
Iter 6/10: OSS cache speed: 0.61057
Iter 6/10: ladvise speed: 0.309122
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.562288
Iter 7/10: OSS cache speed: 0.334545
Iter 7/10: ladvise speed: 0.498935
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.318969
Iter 8/10: OSS cache speed: 0.644318
Iter 8/10: ladvise speed: 0.673687
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.850873
Iter 9/10: OSS cache speed: 0.729899
Iter 9/10: ladvise speed: 0.709177
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.843053
Iter 10/10: OSS cache speed: 0.559753
Iter 10/10: ladvise speed: 0.468668
Average uncached read: .53
Average speedup with OSS cached read: .55 = +3.77%
Average speedup with ladvise willread: .44 = +-16.98%
Speedup with OSS cached read less than 20%, got 3.77%. Skipping ladvise willread check.
fail_loc=0