== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:27:17 (1713209237)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.46105 s, 42.6 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: 2.68538
Iter 1/10: OSS cache speed: 2.82806
Iter 1/10: ladvise speed: 2.72195
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.5786
Iter 2/10: OSS cache speed: 2.60644
Iter 2/10: ladvise speed: 2.37917
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.53754
Iter 3/10: OSS cache speed: 2.59459
Iter 3/10: ladvise speed: 2.29589
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.25829
Iter 4/10: OSS cache speed: 2.28916
Iter 4/10: ladvise speed: 2.46191
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.2823
Iter 5/10: OSS cache speed: 2.14588
Iter 5/10: ladvise speed: 2.12138
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.05055
Iter 6/10: OSS cache speed: 1.86427
Iter 6/10: ladvise speed: 2.2792
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.61495
Iter 7/10: OSS cache speed: 2.4247
Iter 7/10: ladvise speed: 2.82941
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.83575
Iter 8/10: OSS cache speed: 2.82389
Iter 8/10: ladvise speed: 2.67436
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.76462
Iter 9/10: OSS cache speed: 2.46438
Iter 9/10: ladvise speed: 2.26197
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.83639
Iter 10/10: OSS cache speed: 2.10773
Iter 10/10: ladvise speed: 1.99597
Average uncached read: 2.44
Average speedup with OSS cached read: 2.41 = +-1.22%
Average speedup with ladvise willread: 2.40 = +-1.63%
Speedup with OSS cached read less than 20%, got -1.22%. Skipping ladvise willread check.
fail_loc=0