== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:11:12 (1761142272)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 6.54643 s, 16.0 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
llite.lustre-ffff8d3744f82800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.09033
Iter 1/10: OSS cache speed: 2.10842
Iter 1/10: ladvise speed: 2.11405
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.00602
Iter 2/10: OSS cache speed: 2.00144
Iter 2/10: ladvise speed: 2.14146
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.04226
Iter 3/10: OSS cache speed: 2.11001
Iter 3/10: ladvise speed: 2.14859
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.12109
Iter 4/10: OSS cache speed: 2.00619
Iter 4/10: ladvise speed: 2.10953
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.1309
Iter 5/10: OSS cache speed: 2.19634
Iter 5/10: ladvise speed: 2.14511
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.16767
Iter 6/10: OSS cache speed: 2.0712
Iter 6/10: ladvise speed: 2.08108
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.0138
Iter 7/10: OSS cache speed: 2.064
Iter 7/10: ladvise speed: 1.99109
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.09221
Iter 8/10: OSS cache speed: 2.28947
Iter 8/10: ladvise speed: 2.1582
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.02896
Iter 9/10: OSS cache speed: 2.10492
Iter 9/10: ladvise speed: 2.10603
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.16644
Iter 10/10: OSS cache speed: 2.22971
Iter 10/10: ladvise speed: 2.18171
Average uncached read: 2.08
Average speedup with OSS cached read:  2.11 = +1%
Average speedup with ladvise willread:  2.11 = +1%
Speedup with OSS cached read less than 20%,  got 1%. Skipping ladvise willread check.
fail_loc=0