== sanity test 255a: check 'lfs ladvise -a willread' ===== 13:28:22 (1758734902)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 6.81551 s, 15.4 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-ffff8a5b98e09800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.323
Iter 1/10: OSS cache speed: 2.30541
Iter 1/10: ladvise speed: 2.04552
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.19663
Iter 2/10: OSS cache speed: 2.13201
Iter 2/10: ladvise speed: 2.07265
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.91506
Iter 3/10: OSS cache speed: 1.92421
Iter 3/10: ladvise speed: 1.84089
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.96732
Iter 4/10: OSS cache speed: 2.23898
Iter 4/10: ladvise speed: 2.43308
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.07999
Iter 5/10: OSS cache speed: 2.36905
Iter 5/10: ladvise speed: 2.45029
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.10535
Iter 6/10: OSS cache speed: 2.2312
Iter 6/10: ladvise speed: 2.37698
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.12726
Iter 7/10: OSS cache speed: 2.37778
Iter 7/10: ladvise speed: 2.34654
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.20648
Iter 8/10: OSS cache speed: 2.37216
Iter 8/10: ladvise speed: 2.35458
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.18328
Iter 9/10: OSS cache speed: 2.39315
Iter 9/10: ladvise speed: 2.36504
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.80493
Iter 10/10: OSS cache speed: 0.876132
Iter 10/10: ladvise speed: 0.507629
Average uncached read: 2.09
Average speedup with OSS cached read:  2.12 = +1%
Average speedup with ladvise willread:  2.07 = +0%
Speedup with OSS cached read less than 20%,  got 1%. Skipping ladvise willread check.
fail_loc=0