== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:07:18 (1730574438)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 4.42205 s, 23.7 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
llite.lustre-ffff8800b6f5a000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.02885
Iter 1/10: OSS cache speed: 1.2516
Iter 1/10: ladvise speed: 1.21605
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.18917
Iter 2/10: OSS cache speed: 1.2126
Iter 2/10: ladvise speed: 1.16626
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.07567
Iter 3/10: OSS cache speed: 1.38773
Iter 3/10: ladvise speed: 1.00887
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.922595
Iter 4/10: OSS cache speed: 1.08619
Iter 4/10: ladvise speed: 1.05653
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.929072
Iter 5/10: OSS cache speed: 1.07934
Iter 5/10: ladvise speed: 1.08923
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.42424
Iter 6/10: OSS cache speed: 1.49881
Iter 6/10: ladvise speed: 1.45422
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.55809
Iter 7/10: OSS cache speed: 1.80422
Iter 7/10: ladvise speed: 2.23114
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.90964
Iter 8/10: OSS cache speed: 2.28827
Iter 8/10: ladvise speed: 3.14649
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.77828
Iter 9/10: OSS cache speed: 2.66281
Iter 9/10: ladvise speed: 2.86371
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.34049
Iter 10/10: OSS cache speed: 2.67326
Iter 10/10: ladvise speed: 3.09814
Average uncached read: 1.51
Average speedup with OSS cached read: 1.69 = +11.92%
Average speedup with ladvise willread: 1.83 = +21.19%
Speedup with OSS cached read less than 20%, got 11.92%. Skipping ladvise willread check.
fail_loc=0