== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:30:51 (1768548651)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.457 s, 7.3 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-ffff92258ae6c800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.372633
Iter 1/10: OSS cache speed: 0.397855
Iter 1/10: ladvise speed: 0.442146
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.35155
Iter 2/10: OSS cache speed: 0.391805
Iter 2/10: ladvise speed: 0.398245
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.384467
Iter 3/10: OSS cache speed: 0.361862
Iter 3/10: ladvise speed: 0.34481
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.356128
Iter 4/10: OSS cache speed: 0.354802
Iter 4/10: ladvise speed: 0.363197
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.384943
Iter 5/10: OSS cache speed: 0.328754
Iter 5/10: ladvise speed: 0.360725
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.360266
Iter 6/10: OSS cache speed: 0.361443
Iter 6/10: ladvise speed: 0.300919
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.329658
Iter 7/10: OSS cache speed: 0.30707
Iter 7/10: ladvise speed: 0.343015
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.376851
Iter 8/10: OSS cache speed: 0.349031
Iter 8/10: ladvise speed: 0.363073
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.334116
Iter 9/10: OSS cache speed: 0.417443
Iter 9/10: ladvise speed: 0.431631
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.448981
Iter 10/10: OSS cache speed: 0.424373
Iter 10/10: ladvise speed: 0.395242
Average uncached read: .36
Average speedup with OSS cached read:  .36 = +0%
Average speedup with ladvise willread:  .37 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0