== sanity test 255a: check 'lfs ladvise -a willread' ===== 08:56:38 (1786712198)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.6228 s, 8.3 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-ffff8c46a00c3000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.387683
Iter 1/10: OSS cache speed: 0.388509
Iter 1/10: ladvise speed: 0.381968
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.368468
Iter 2/10: OSS cache speed: 0.423444
Iter 2/10: ladvise speed: 0.4899
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.43311
Iter 3/10: OSS cache speed: 0.401642
Iter 3/10: ladvise speed: 0.426845
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.421274
Iter 4/10: OSS cache speed: 0.482988
Iter 4/10: ladvise speed: 0.408933
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.366124
Iter 5/10: OSS cache speed: 0.393425
Iter 5/10: ladvise speed: 0.481112
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.482009
Iter 6/10: OSS cache speed: 0.489087
Iter 6/10: ladvise speed: 0.516183
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.467702
Iter 7/10: OSS cache speed: 0.390864
Iter 7/10: ladvise speed: 0.486793
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.394645
Iter 8/10: OSS cache speed: 0.47687
Iter 8/10: ladvise speed: 0.517833
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.456094
Iter 9/10: OSS cache speed: 0.403259
Iter 9/10: ladvise speed: 0.46854
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.496429
Iter 10/10: OSS cache speed: 0.445459
Iter 10/10: ladvise speed: 0.53261
Average uncached read: .42
Average speedup with OSS cached read:  .42 = +0%
Average speedup with ladvise willread:  .47 = +11%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0