== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:22:33 (1786065753)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.4656 s, 9.1 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-ffff9bdf8513d800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.471948
Iter 1/10: OSS cache speed: 0.423062
Iter 1/10: ladvise speed: 0.326959
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.401406
Iter 2/10: OSS cache speed: 0.377367
Iter 2/10: ladvise speed: 0.439961
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.404257
Iter 3/10: OSS cache speed: 0.365531
Iter 3/10: ladvise speed: 0.423849
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.477301
Iter 4/10: OSS cache speed: 0.433107
Iter 4/10: ladvise speed: 0.33029
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.392676
Iter 5/10: OSS cache speed: 0.468584
Iter 5/10: ladvise speed: 0.355408
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.360321
Iter 6/10: OSS cache speed: 0.382756
Iter 6/10: ladvise speed: 0.430473
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.303752
Iter 7/10: OSS cache speed: 0.357611
Iter 7/10: ladvise speed: 0.468017
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.393296
Iter 8/10: OSS cache speed: 0.374865
Iter 8/10: ladvise speed: 0.418502
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.406758
Iter 9/10: OSS cache speed: 0.422443
Iter 9/10: ladvise speed: 0.438003
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.405126
Iter 10/10: OSS cache speed: 0.442863
Iter 10/10: ladvise speed: 0.322745
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