== sanity test 255a: check 'lfs ladvise -a willread' ===== 09:13:16 (1782220396)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 15.7191 s, 6.7 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-ffff8cd7c372a000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.341245
Iter 1/10: OSS cache speed: 0.358101
Iter 1/10: ladvise speed: 0.309442
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.325592
Iter 2/10: OSS cache speed: 0.317425
Iter 2/10: ladvise speed: 0.345686
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.331256
Iter 3/10: OSS cache speed: 0.324881
Iter 3/10: ladvise speed: 0.33344
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.325367
Iter 4/10: OSS cache speed: 0.309897
Iter 4/10: ladvise speed: 0.293244
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.345601
Iter 5/10: OSS cache speed: 0.282985
Iter 5/10: ladvise speed: 0.303746
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.311629
Iter 6/10: OSS cache speed: 0.381443
Iter 6/10: ladvise speed: 0.280339
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.317028
Iter 7/10: OSS cache speed: 0.336229
Iter 7/10: ladvise speed: 0.325594
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.357355
Iter 8/10: OSS cache speed: 0.337337
Iter 8/10: ladvise speed: 0.371171
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.323281
Iter 9/10: OSS cache speed: 0.392237
Iter 9/10: ladvise speed: 0.38437
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.402794
Iter 10/10: OSS cache speed: 0.35813
Iter 10/10: ladvise speed: 0.354759
Average uncached read: .33
Average speedup with OSS cached read:  .33 = +0%
Average speedup with ladvise willread:  .33 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0