== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:26:06 (1786631166)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.5208 s, 8.4 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-ffff9c12184d8000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.326958
Iter 1/10: OSS cache speed: 0.303112
Iter 1/10: ladvise speed: 0.266118
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.230297
Iter 2/10: OSS cache speed: 0.271039
Iter 2/10: ladvise speed: 0.307545
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.286623
Iter 3/10: OSS cache speed: 0.257835
Iter 3/10: ladvise speed: 0.288003
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.281039
Iter 4/10: OSS cache speed: 0.286688
Iter 4/10: ladvise speed: 0.260622
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.333919
Iter 5/10: OSS cache speed: 0.291226
Iter 5/10: ladvise speed: 0.325905
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.278763
Iter 6/10: OSS cache speed: 0.288819
Iter 6/10: ladvise speed: 0.311095
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.290107
Iter 7/10: OSS cache speed: 0.320632
Iter 7/10: ladvise speed: 0.323896
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.313598
Iter 8/10: OSS cache speed: 0.2963
Iter 8/10: ladvise speed: 0.293146
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.309723
Iter 9/10: OSS cache speed: 0.317392
Iter 9/10: ladvise speed: 0.285097
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.279142
Iter 10/10: OSS cache speed: 0.316259
Iter 10/10: ladvise speed: 0.293246
Average uncached read: .29
Average speedup with OSS cached read:  .29 = +0%
Average speedup with ladvise willread:  .29 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0