== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:12:38 (1713402758)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.40132 s, 43.7 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: 1.52613
Iter 1/10: OSS cache speed: 1.68963
Iter 1/10: ladvise speed: 1.67056
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.4512
Iter 2/10: OSS cache speed: 1.65214
Iter 2/10: ladvise speed: 1.74786
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.40231
Iter 3/10: OSS cache speed: 1.73141
Iter 3/10: ladvise speed: 1.65321
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.42467
Iter 4/10: OSS cache speed: 1.81037
Iter 4/10: ladvise speed: 1.69044
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.40563
Iter 5/10: OSS cache speed: 1.82424
Iter 5/10: ladvise speed: 1.78247
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.4029
Iter 6/10: OSS cache speed: 1.64679
Iter 6/10: ladvise speed: 1.65235
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.41104
Iter 7/10: OSS cache speed: 1.74834
Iter 7/10: ladvise speed: 1.74483
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.4435
Iter 8/10: OSS cache speed: 1.72962
Iter 8/10: ladvise speed: 1.74031
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.42224
Iter 9/10: OSS cache speed: 1.93001
Iter 9/10: ladvise speed: 1.79165
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.41885
Iter 10/10: OSS cache speed: 1.9805
Iter 10/10: ladvise speed: 1.68044
Average uncached read: 1.43
Average speedup with OSS cached read: 1.77 = +23.77%
Average speedup with ladvise willread: 1.71 = +19.58%
fail_loc=0