== sanity test 255a: check 'lfs ladvise -a willread' ===== 23:12:51 (1761102771)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 5.73824 s, 18.3 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-ffff9a3920efc800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.6871
Iter 1/10: OSS cache speed: 1.99508
Iter 1/10: ladvise speed: 1.94988
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.33739
Iter 2/10: OSS cache speed: 2.39556
Iter 2/10: ladvise speed: 1.85178
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.56324
Iter 3/10: OSS cache speed: 1.8899
Iter 3/10: ladvise speed: 2.11734
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.34179
Iter 4/10: OSS cache speed: 2.49399
Iter 4/10: ladvise speed: 1.95561
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.96146
Iter 5/10: OSS cache speed: 1.89529
Iter 5/10: ladvise speed: 1.98981
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.74233
Iter 6/10: OSS cache speed: 1.35051
Iter 6/10: ladvise speed: 1.78506
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.13391
Iter 7/10: OSS cache speed: 1.56879
Iter 7/10: ladvise speed: 1.58582
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.48661
Iter 8/10: OSS cache speed: 1.79784
Iter 8/10: ladvise speed: 2.56404
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.38696
Iter 9/10: OSS cache speed: 2.58511
Iter 9/10: ladvise speed: 2.55119
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.40468
Iter 10/10: OSS cache speed: 2.39424
Iter 10/10: ladvise speed: 2.00525
Average uncached read: 2.00
Average speedup with OSS cached read:  2.03 = +1%
Average speedup with ladvise willread:  2.03 = +1%
Speedup with OSS cached read less than 20%,  got 1%. Skipping ladvise willread check.
fail_loc=0