== sanity test 255a: check 'lfs ladvise -a willread' ===== 19:24:53 (1775863493)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 4.81255 s, 21.8 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-ffff8b61502c4800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.59083
Iter 1/10: OSS cache speed: 0.973543
Iter 1/10: ladvise speed: 0.987692
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.50973
Iter 2/10: OSS cache speed: 1.92417
Iter 2/10: ladvise speed: 1.92736
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.0072
Iter 3/10: OSS cache speed: 2.14193
Iter 3/10: ladvise speed: 2.13816
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.19608
Iter 4/10: OSS cache speed: 1.43873
Iter 4/10: ladvise speed: 1.35872
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.74082
Iter 5/10: OSS cache speed: 2.03414
Iter 5/10: ladvise speed: 2.14268
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.25221
Iter 6/10: OSS cache speed: 2.07747
Iter 6/10: ladvise speed: 2.18895
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.10817
Iter 7/10: OSS cache speed: 1.95379
Iter 7/10: ladvise speed: 1.10179
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.55097
Iter 8/10: OSS cache speed: 2.12472
Iter 8/10: ladvise speed: 2.17723
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.17022
Iter 9/10: OSS cache speed: 2.36488
Iter 9/10: ladvise speed: 2.04117
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.00136
Iter 10/10: OSS cache speed: 2.10193
Iter 10/10: ladvise speed: 2.14644
Average uncached read: 1.91
Average speedup with OSS cached read:  1.91 = +0%
Average speedup with ladvise willread:  1.82 = +-4%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0