== sanity test 255a: check 'lfs ladvise -a willread' ===== 06:02:57 (1744884177)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.41519 s, 43.4 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-ffff8800b600f800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.66416
Iter 1/10: OSS cache speed: 2.57152
Iter 1/10: ladvise speed: 2.02187
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.29966
Iter 2/10: OSS cache speed: 2.27584
Iter 2/10: ladvise speed: 1.87765
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.55928
Iter 3/10: OSS cache speed: 2.02282
Iter 3/10: ladvise speed: 2.22672
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.21118
Iter 4/10: OSS cache speed: 2.26528
Iter 4/10: ladvise speed: 2.39031
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.75928
Iter 5/10: OSS cache speed: 2.5706
Iter 5/10: ladvise speed: 2.44326
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.54244
Iter 6/10: OSS cache speed: 2.45672
Iter 6/10: ladvise speed: 2.68286
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.4691
Iter 7/10: OSS cache speed: 1.63637
Iter 7/10: ladvise speed: 1.73723
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.29021
Iter 8/10: OSS cache speed: 1.20028
Iter 8/10: ladvise speed: 1.39793
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.1742
Iter 9/10: OSS cache speed: 1.35467
Iter 9/10: ladvise speed: 1.89758
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.52245
Iter 10/10: OSS cache speed: 1.88198
Iter 10/10: ladvise speed: 1.84663
Average uncached read: 2.04
Average speedup with OSS cached read:  2.02 = +0%
Average speedup with ladvise willread:  2.05 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0