== sanity test 255a: check 'lfs ladvise -a willread' ===== 14:23:58 (1767727438)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 7.19614 s, 14.6 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
llite.lustre-ffff8ae1d2238000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.650665
Iter 1/10: OSS cache speed: 0.664355
Iter 1/10: ladvise speed: 0.63752
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.701871
Iter 2/10: OSS cache speed: 0.679253
Iter 2/10: ladvise speed: 0.725498
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.668232
Iter 3/10: OSS cache speed: 0.750357
Iter 3/10: ladvise speed: 0.624737
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.632159
Iter 4/10: OSS cache speed: 0.633047
Iter 4/10: ladvise speed: 0.742945
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.92324
Iter 5/10: OSS cache speed: 0.968159
Iter 5/10: ladvise speed: 0.876664
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.32356
Iter 6/10: OSS cache speed: 1.38033
Iter 6/10: ladvise speed: 1.70887
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.1693
Iter 7/10: OSS cache speed: 2.17154
Iter 7/10: ladvise speed: 1.9726
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.87552
Iter 8/10: OSS cache speed: 1.98231
Iter 8/10: ladvise speed: 1.99415
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.01145
Iter 9/10: OSS cache speed: 1.91356
Iter 9/10: ladvise speed: 1.93339
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.8902
Iter 10/10: OSS cache speed: 2.11593
Iter 10/10: ladvise speed: 2.03908
Average uncached read: 1.28
Average speedup with OSS cached read:  1.32 = +3%
Average speedup with ladvise willread:  1.32 = +3%
Speedup with OSS cached read less than 20%,  got 3%. Skipping ladvise willread check.
fail_loc=0