== sanity test 255a: check 'lfs ladvise -a willread' ===== 00:00:46 (1744171246)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.45809 s, 42.7 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-ffff8800ae8c6000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.42573
Iter 1/10: OSS cache speed: 2.62219
Iter 1/10: ladvise speed: 2.81723
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.48887
Iter 2/10: OSS cache speed: 2.70762
Iter 2/10: ladvise speed: 2.5806
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.5117
Iter 3/10: OSS cache speed: 2.57732
Iter 3/10: ladvise speed: 2.68019
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.62613
Iter 4/10: OSS cache speed: 2.57165
Iter 4/10: ladvise speed: 2.83833
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.84179
Iter 5/10: OSS cache speed: 2.81871
Iter 5/10: ladvise speed: 2.81962
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.69428
Iter 6/10: OSS cache speed: 2.62785
Iter 6/10: ladvise speed: 2.49546
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.67335
Iter 7/10: OSS cache speed: 2.42017
Iter 7/10: ladvise speed: 2.54045
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.72038
Iter 8/10: OSS cache speed: 2.65747
Iter 8/10: ladvise speed: 2.64504
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.73426
Iter 9/10: OSS cache speed: 2.78196
Iter 9/10: ladvise speed: 1.78864
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.90068
Iter 10/10: OSS cache speed: 2.07914
Iter 10/10: ladvise speed: 2.73296
Average uncached read: 2.56
Average speedup with OSS cached read:  2.58 = +0%
Average speedup with ladvise willread:  2.59 = +1%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0