== sanity test 255a: check 'lfs ladvise -a willread' ===== 16:29:55 (1775766595)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.9865 s, 7.5 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-ffff9d11d1e02000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.238314
Iter 1/10: OSS cache speed: 0.248939
Iter 1/10: ladvise speed: 0.233567
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.221745
Iter 2/10: OSS cache speed: 0.259689
Iter 2/10: ladvise speed: 0.221131
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.239318
Iter 3/10: OSS cache speed: 0.247635
Iter 3/10: ladvise speed: 0.248389
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.266648
Iter 4/10: OSS cache speed: 0.25792
Iter 4/10: ladvise speed: 0.235121
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.288181
Iter 5/10: OSS cache speed: 0.214678
Iter 5/10: ladvise speed: 0.306141
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.271155
Iter 6/10: OSS cache speed: 0.294791
Iter 6/10: ladvise speed: 0.29194
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.288452
Iter 7/10: OSS cache speed: 0.307837
Iter 7/10: ladvise speed: 0.294928
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.296393
Iter 8/10: OSS cache speed: 0.303831
Iter 8/10: ladvise speed: 0.299809
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.314454
Iter 9/10: OSS cache speed: 0.311175
Iter 9/10: ladvise speed: 0.344583
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.353414
Iter 10/10: OSS cache speed: 0.346988
Iter 10/10: ladvise speed: 0.310601
Average uncached read: .27
Average speedup with OSS cached read:  .27 = +0%
Average speedup with ladvise willread:  .27 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0