== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:15:37 (1713294937)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.34462 s, 44.7 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: 2.54562
Iter 1/10: OSS cache speed: 2.74181
Iter 1/10: ladvise speed: 2.73917
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.73469
Iter 2/10: OSS cache speed: 2.26241
Iter 2/10: ladvise speed: 2.40386
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.50023
Iter 3/10: OSS cache speed: 1.94043
Iter 3/10: ladvise speed: 1.74967
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.30626
Iter 4/10: OSS cache speed: 1.71233
Iter 4/10: ladvise speed: 2.43153
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.4345
Iter 5/10: OSS cache speed: 2.86937
Iter 5/10: ladvise speed: 2.83167
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.39301
Iter 6/10: OSS cache speed: 2.29431
Iter 6/10: ladvise speed: 1.92614
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.69335
Iter 7/10: OSS cache speed: 1.84138
Iter 7/10: ladvise speed: 2.14424
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.72421
Iter 8/10: OSS cache speed: 1.88452
Iter 8/10: ladvise speed: 1.94747
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.15459
Iter 9/10: OSS cache speed: 2.66571
Iter 9/10: ladvise speed: 2.68315
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.63212
Iter 10/10: OSS cache speed: 2.59677
Iter 10/10: ladvise speed: 2.6599
Average uncached read: 2.31
Average speedup with OSS cached read: 2.28 = +-1.29%
Average speedup with ladvise willread: 2.35 = +1.73%
Speedup with OSS cached read less than 20%, got -1.29%. Skipping ladvise willread check.
fail_loc=0