== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:01:04 (1785391264)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 18.5202 s, 5.7 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-ffff9ca909e2d000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.240928
Iter 1/10: OSS cache speed: 0.241352
Iter 1/10: ladvise speed: 0.243316
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.225555
Iter 2/10: OSS cache speed: 0.258633
Iter 2/10: ladvise speed: 0.28234
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.253083
Iter 3/10: OSS cache speed: 0.210282
Iter 3/10: ladvise speed: 0.20595
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.207588
Iter 4/10: OSS cache speed: 0.242166
Iter 4/10: ladvise speed: 0.263036
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.2373
Iter 5/10: OSS cache speed: 0.24812
Iter 5/10: ladvise speed: 0.283336
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.25393
Iter 6/10: OSS cache speed: 0.279176
Iter 6/10: ladvise speed: 0.23785
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.209291
Iter 7/10: OSS cache speed: 0.248587
Iter 7/10: ladvise speed: 0.18906
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.206694
Iter 8/10: OSS cache speed: 0.23753
Iter 8/10: ladvise speed: 0.204367
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.227104
Iter 9/10: OSS cache speed: 0.223788
Iter 9/10: ladvise speed: 0.246987
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.236209
Iter 10/10: OSS cache speed: 0.253484
Iter 10/10: ladvise speed: 0.257822
Average uncached read: .22
Average speedup with OSS cached read:  .24 = +9%
Average speedup with ladvise willread:  .24 = +9%
Speedup with OSS cached read less than 20%,  got 9%. Skipping ladvise willread check.
fail_loc=0