== sanity test 255a: check 'lfs ladvise -a willread' ===== 08:43:18 (1789130598)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.2801 s, 7.3 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-ffff888f89749800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.341344
Iter 1/10: OSS cache speed: 0.358121
Iter 1/10: ladvise speed: 0.309919
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.326621
Iter 2/10: OSS cache speed: 0.348382
Iter 2/10: ladvise speed: 0.273877
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.336969
Iter 3/10: OSS cache speed: 0.312013
Iter 3/10: ladvise speed: 0.322074
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.287198
Iter 4/10: OSS cache speed: 0.319454
Iter 4/10: ladvise speed: 0.329306
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.315966
Iter 5/10: OSS cache speed: 0.3554
Iter 5/10: ladvise speed: 0.360627
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.318527
Iter 6/10: OSS cache speed: 0.322401
Iter 6/10: ladvise speed: 0.270654
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.30536
Iter 7/10: OSS cache speed: 0.274181
Iter 7/10: ladvise speed: 0.310049
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.272731
Iter 8/10: OSS cache speed: 0.313196
Iter 8/10: ladvise speed: 0.357535
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.294171
Iter 9/10: OSS cache speed: 0.297646
Iter 9/10: ladvise speed: 0.301126
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.369644
Iter 10/10: OSS cache speed: 0.282445
Iter 10/10: ladvise speed: 0.304208
Average uncached read: .31
Average speedup with OSS cached read:  .31 = +0%
Average speedup with ladvise willread:  .31 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0