== sanity test 255a: check 'lfs ladvise -a willread' ===== 04:53:44 (1715331224)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 4.99415 s, 21.0 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: 0.868092
Iter 1/10: OSS cache speed: 1.23038
Iter 1/10: ladvise speed: 0.170081
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.356148
Iter 2/10: OSS cache speed: 0.30436
Iter 2/10: ladvise speed: 0.149044
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.913683
Iter 3/10: OSS cache speed: 0.766358
Iter 3/10: ladvise speed: 0.48809
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.29055
Iter 4/10: OSS cache speed: 0.422282
Iter 4/10: ladvise speed: 0.827133
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.431232
Iter 5/10: OSS cache speed: 0.814474
Iter 5/10: ladvise speed: 0.522222
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.254108
Iter 6/10: OSS cache speed: 0.655605
Iter 6/10: ladvise speed: 0.818176
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.533805
Iter 7/10: OSS cache speed: 0.522225
Iter 7/10: ladvise speed: 0.177458
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.391713
Iter 8/10: OSS cache speed: 1.12341
Iter 8/10: ladvise speed: 1.17268
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.26115
Iter 9/10: OSS cache speed: 1.49572
Iter 9/10: ladvise speed: 1.73429
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.87208
Iter 10/10: OSS cache speed: 1.83799
Iter 10/10: ladvise speed: 1.98768
Average uncached read: .81
Average speedup with OSS cached read: .91 = +12.34%
Average speedup with ladvise willread: .80 = +-1.23%
Speedup with OSS cached read less than 20%, got 12.34%. Skipping ladvise willread check.
fail_loc=0