== sanity test 255a: check 'lfs ladvise -a willread' ===== 17:14:29 (1787606069)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 16.1118 s, 6.5 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-ffff8d82d03a2000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.303295
Iter 1/10: OSS cache speed: 0.258757
Iter 1/10: ladvise speed: 0.297026
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.273588
Iter 2/10: OSS cache speed: 0.311637
Iter 2/10: ladvise speed: 0.290021
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.290591
Iter 3/10: OSS cache speed: 0.319625
Iter 3/10: ladvise speed: 0.327999
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.304019
Iter 4/10: OSS cache speed: 0.296505
Iter 4/10: ladvise speed: 0.313556
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.345957
Iter 5/10: OSS cache speed: 0.331294
Iter 5/10: ladvise speed: 0.307639
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.306929
Iter 6/10: OSS cache speed: 0.291555
Iter 6/10: ladvise speed: 0.307118
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.334767
Iter 7/10: OSS cache speed: 0.334536
Iter 7/10: ladvise speed: 0.330797
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.356134
Iter 8/10: OSS cache speed: 0.353794
Iter 8/10: ladvise speed: 0.349125
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.320546
Iter 9/10: OSS cache speed: 0.300214
Iter 9/10: ladvise speed: 0.301037
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.297325
Iter 10/10: OSS cache speed: 0.310802
Iter 10/10: ladvise speed: 0.303691
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