== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:44:42 (1729089882)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.61672 s, 40.1 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-ffff8800ab174000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.33179
Iter 1/10: OSS cache speed: 1.21432
Iter 1/10: ladvise speed: 1.80525
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.34072
Iter 2/10: OSS cache speed: 1.28551
Iter 2/10: ladvise speed: 1.69704
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.89654
Iter 3/10: OSS cache speed: 2.13658
Iter 3/10: ladvise speed: 1.40752
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.35642
Iter 4/10: OSS cache speed: 1.2494
Iter 4/10: ladvise speed: 0.986977
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.37968
Iter 5/10: OSS cache speed: 1.03575
Iter 5/10: ladvise speed: 0.925713
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.987192
Iter 6/10: OSS cache speed: 0.831001
Iter 6/10: ladvise speed: 0.850011
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.958146
Iter 7/10: OSS cache speed: 0.971508
Iter 7/10: ladvise speed: 1.10172
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.606151
Iter 8/10: OSS cache speed: 0.661019
Iter 8/10: ladvise speed: 0.725944
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.734091
Iter 9/10: OSS cache speed: 0.808471
Iter 9/10: ladvise speed: 0.715581
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.688359
Iter 10/10: OSS cache speed: 0.854061
Iter 10/10: ladvise speed: 0.953655
Average uncached read: 1.22
Average speedup with OSS cached read: 1.10 = +-9.83%
Average speedup with ladvise willread: 1.11 = +-9.01%
Speedup with OSS cached read less than 20%, got -9.83%. Skipping ladvise willread check.
fail_loc=0