== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:12:46 (1713402766)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.75115 s, 38.1 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: 1.5361
Iter 1/10: OSS cache speed: 1.64883
Iter 1/10: ladvise speed: 1.72488
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.4349
Iter 2/10: OSS cache speed: 1.62946
Iter 2/10: ladvise speed: 1.95225
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.42899
Iter 3/10: OSS cache speed: 1.65923
Iter 3/10: ladvise speed: 1.68589
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.46351
Iter 4/10: OSS cache speed: 1.82234
Iter 4/10: ladvise speed: 1.7053
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.42171
Iter 5/10: OSS cache speed: 1.7033
Iter 5/10: ladvise speed: 1.7019
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.389
Iter 6/10: OSS cache speed: 1.65019
Iter 6/10: ladvise speed: 1.71879
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.40111
Iter 7/10: OSS cache speed: 1.68094
Iter 7/10: ladvise speed: 1.81553
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.38573
Iter 8/10: OSS cache speed: 1.73603
Iter 8/10: ladvise speed: 1.77638
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.40008
Iter 9/10: OSS cache speed: 1.92404
Iter 9/10: ladvise speed: 1.79715
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.40513
Iter 10/10: OSS cache speed: 1.99173
Iter 10/10: ladvise speed: 1.67531
Average uncached read: 1.42
Average speedup with OSS cached read: 1.74 = +22.53%
Average speedup with ladvise willread: 1.75 = +23.23%
fail_loc=0