== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:47:26 (1788918446)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 10.3361 s, 10.1 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-ffff93e644c21800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.284336
Iter 1/10: OSS cache speed: 0.305727
Iter 1/10: ladvise speed: 0.343391
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.318343
Iter 2/10: OSS cache speed: 0.349442
Iter 2/10: ladvise speed: 0.267147
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.293046
Iter 3/10: OSS cache speed: 0.344384
Iter 3/10: ladvise speed: 0.37615
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.419985
Iter 4/10: OSS cache speed: 0.477359
Iter 4/10: ladvise speed: 0.663513
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.626397
Iter 5/10: OSS cache speed: 0.694829
Iter 5/10: ladvise speed: 0.820323
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.891269
Iter 6/10: OSS cache speed: 0.989487
Iter 6/10: ladvise speed: 0.975643
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.22196
Iter 7/10: OSS cache speed: 0.978028
Iter 7/10: ladvise speed: 0.701883
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.337023
Iter 8/10: OSS cache speed: 0.485258
Iter 8/10: ladvise speed: 0.519739
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.51779
Iter 9/10: OSS cache speed: 0.310645
Iter 9/10: ladvise speed: 0.317229
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.365323
Iter 10/10: OSS cache speed: 0.391815
Iter 10/10: ladvise speed: 0.353075
Average uncached read: .52
Average speedup with OSS cached read:  .53 = +1%
Average speedup with ladvise willread:  .53 = +1%
Speedup with OSS cached read less than 20%,  got 1%. Skipping ladvise willread check.
fail_loc=0