== sanity test 255a: check 'lfs ladvise -a willread' ===== 23:19:43 (1786418383)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.0162 s, 8.7 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-ffff950e0334c000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.418759
Iter 1/10: OSS cache speed: 0.400929
Iter 1/10: ladvise speed: 0.430074
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.428824
Iter 2/10: OSS cache speed: 0.40106
Iter 2/10: ladvise speed: 0.392732
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.447869
Iter 3/10: OSS cache speed: 0.433435
Iter 3/10: ladvise speed: 0.418775
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.361036
Iter 4/10: OSS cache speed: 0.433578
Iter 4/10: ladvise speed: 0.400175
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.443394
Iter 5/10: OSS cache speed: 0.446327
Iter 5/10: ladvise speed: 0.413222
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.439453
Iter 6/10: OSS cache speed: 0.382419
Iter 6/10: ladvise speed: 0.452127
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.438748
Iter 7/10: OSS cache speed: 0.422681
Iter 7/10: ladvise speed: 0.429831
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.442299
Iter 8/10: OSS cache speed: 0.437639
Iter 8/10: ladvise speed: 0.443442
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.413117
Iter 9/10: OSS cache speed: 0.408555
Iter 9/10: ladvise speed: 0.437976
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.392089
Iter 10/10: OSS cache speed: 0.434701
Iter 10/10: ladvise speed: 0.449009
Average uncached read: .42
Average speedup with OSS cached read:  .42 = +0%
Average speedup with ladvise willread:  .42 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0