== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:12:34 (1713402754)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.3227 s, 45.1 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: 1.50005
Iter 1/10: OSS cache speed: 2.05569
Iter 1/10: ladvise speed: 1.7549
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.64496
Iter 2/10: OSS cache speed: 1.73318
Iter 2/10: ladvise speed: 1.80502
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.2873
Iter 3/10: OSS cache speed: 1.79179
Iter 3/10: ladvise speed: 1.638
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.5974
Iter 4/10: OSS cache speed: 2.12983
Iter 4/10: ladvise speed: 1.68757
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.46388
Iter 5/10: OSS cache speed: 2.45004
Iter 5/10: ladvise speed: 2.10389
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.62726
Iter 6/10: OSS cache speed: 2.87254
Iter 6/10: ladvise speed: 1.6622
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.18379
Iter 7/10: OSS cache speed: 1.83168
Iter 7/10: ladvise speed: 1.66419
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.58215
Iter 8/10: OSS cache speed: 2.02218
Iter 8/10: ladvise speed: 1.63258
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.03344
Iter 9/10: OSS cache speed: 1.92362
Iter 9/10: ladvise speed: 2.04403
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.9459
Iter 10/10: OSS cache speed: 1.88907
Iter 10/10: ladvise speed: 1.89122
Average uncached read: 1.88
Average speedup with OSS cached read: 2.06 = +9.57%
Average speedup with ladvise willread: 1.78 = +-5.31%
Speedup with OSS cached read less than 20%, got 9.57%. Skipping ladvise willread check.
fail_loc=0