== sanity test 255a: check 'lfs ladvise -a willread' ===== 08:50:50 (1788871850)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.236 s, 9.3 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-ffff8d239011a000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.414813
Iter 1/10: OSS cache speed: 0.399297
Iter 1/10: ladvise speed: 0.415253
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.404819
Iter 2/10: OSS cache speed: 0.393072
Iter 2/10: ladvise speed: 0.416581
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.400937
Iter 3/10: OSS cache speed: 0.343657
Iter 3/10: ladvise speed: 0.384996
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.350042
Iter 4/10: OSS cache speed: 0.350224
Iter 4/10: ladvise speed: 0.300398
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.374707
Iter 5/10: OSS cache speed: 0.391478
Iter 5/10: ladvise speed: 0.366691
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.344587
Iter 6/10: OSS cache speed: 0.419557
Iter 6/10: ladvise speed: 0.411618
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.441296
Iter 7/10: OSS cache speed: 0.434648
Iter 7/10: ladvise speed: 0.451702
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.454217
Iter 8/10: OSS cache speed: 0.448124
Iter 8/10: ladvise speed: 0.420892
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.4536
Iter 9/10: OSS cache speed: 0.450641
Iter 9/10: ladvise speed: 0.419363
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.441186
Iter 10/10: OSS cache speed: 0.429664
Iter 10/10: ladvise speed: 0.406098
Average uncached read: .40
Average speedup with OSS cached read:  .40 = +0%
Average speedup with ladvise willread:  .39 = +-2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0