== sanity test 255a: check 'lfs ladvise -a willread' ===== 14:39:07 (1780339147)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.9167 s, 8.1 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-ffff9dfa184a8000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.328901
Iter 1/10: OSS cache speed: 0.335279
Iter 1/10: ladvise speed: 0.378395
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.362428
Iter 2/10: OSS cache speed: 0.371992
Iter 2/10: ladvise speed: 0.316751
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.365606
Iter 3/10: OSS cache speed: 0.367146
Iter 3/10: ladvise speed: 0.319718
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.382386
Iter 4/10: OSS cache speed: 0.312076
Iter 4/10: ladvise speed: 0.342084
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.327236
Iter 5/10: OSS cache speed: 0.370097
Iter 5/10: ladvise speed: 0.328625
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.315787
Iter 6/10: OSS cache speed: 0.252827
Iter 6/10: ladvise speed: 0.3515
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.302318
Iter 7/10: OSS cache speed: 0.296174
Iter 7/10: ladvise speed: 0.351002
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.314802
Iter 8/10: OSS cache speed: 0.380962
Iter 8/10: ladvise speed: 0.376223
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.290557
Iter 9/10: OSS cache speed: 0.294877
Iter 9/10: ladvise speed: 0.344245
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.248141
Iter 10/10: OSS cache speed: 0.289798
Iter 10/10: ladvise speed: 0.364952
Average uncached read: .32
Average speedup with OSS cached read:  .32 = +0%
Average speedup with ladvise willread:  .34 = +6%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0