== sanity test 255a: check 'lfs ladvise -a willread' ===== 04:41:26 (1788511286)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.9346 s, 7.5 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-ffff89fc073be800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.391014
Iter 1/10: OSS cache speed: 0.412586
Iter 1/10: ladvise speed: 0.422053
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.324252
Iter 2/10: OSS cache speed: 0.362179
Iter 2/10: ladvise speed: 0.365455
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.384294
Iter 3/10: OSS cache speed: 0.394492
Iter 3/10: ladvise speed: 0.371841
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.34031
Iter 4/10: OSS cache speed: 0.345949
Iter 4/10: ladvise speed: 0.369227
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.41432
Iter 5/10: OSS cache speed: 0.407034
Iter 5/10: ladvise speed: 0.379367
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.370991
Iter 6/10: OSS cache speed: 0.365725
Iter 6/10: ladvise speed: 0.407586
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.359368
Iter 7/10: OSS cache speed: 0.356528
Iter 7/10: ladvise speed: 0.365926
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.372416
Iter 8/10: OSS cache speed: 0.298921
Iter 8/10: ladvise speed: 0.342767
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.34095
Iter 9/10: OSS cache speed: 0.377669
Iter 9/10: ladvise speed: 0.386705
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.323779
Iter 10/10: OSS cache speed: 0.351862
Iter 10/10: ladvise speed: 0.345405
Average uncached read: .36
Average speedup with OSS cached read:  .36 = +0%
Average speedup with ladvise willread:  .37 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0