== sanity test 255a: check 'lfs ladvise -a willread' ===== 13:23:22 (1761240202)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 9.83528 s, 10.7 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-ffff9b14060a1800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.460447
Iter 1/10: OSS cache speed: 0.463349
Iter 1/10: ladvise speed: 0.477842
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.446168
Iter 2/10: OSS cache speed: 0.446831
Iter 2/10: ladvise speed: 0.417385
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.442425
Iter 3/10: OSS cache speed: 0.347646
Iter 3/10: ladvise speed: 0.425785
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.41079
Iter 4/10: OSS cache speed: 0.384027
Iter 4/10: ladvise speed: 0.388244
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.321493
Iter 5/10: OSS cache speed: 0.423363
Iter 5/10: ladvise speed: 0.500927
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.399533
Iter 6/10: OSS cache speed: 0.43338
Iter 6/10: ladvise speed: 0.414893
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.426982
Iter 7/10: OSS cache speed: 0.447968
Iter 7/10: ladvise speed: 0.485689
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.472257
Iter 8/10: OSS cache speed: 0.460229
Iter 8/10: ladvise speed: 0.459689
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.446962
Iter 9/10: OSS cache speed: 0.462105
Iter 9/10: ladvise speed: 0.42267
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.425247
Iter 10/10: OSS cache speed: 0.435248
Iter 10/10: ladvise speed: 0.395325
Average uncached read: .42
Average speedup with OSS cached read:  .43 = +2%
Average speedup with ladvise willread:  .43 = +2%
Speedup with OSS cached read less than 20%,  got 2%. Skipping ladvise willread check.
fail_loc=0