== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:54:29 (1776268469)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 3.48108 s, 30.1 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=4
fail_loc=0x237
Asynchronous ladvise shouldn't wait
fail_loc=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.481747
Iter 1/10: OSS cache speed: 0.567076
Iter 1/10: ladvise speed: 0.561298
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.499508
Iter 2/10: OSS cache speed: 0.579148
Iter 2/10: ladvise speed: 0.704654
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.554488
Iter 3/10: OSS cache speed: 0.663844
Iter 3/10: ladvise speed: 0.649434
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.532134
Iter 4/10: OSS cache speed: 0.549345
Iter 4/10: ladvise speed: 0.616749
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.589675
Iter 5/10: OSS cache speed: 0.711927
Iter 5/10: ladvise speed: 0.619809
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.622792
Iter 6/10: OSS cache speed: 0.628002
Iter 6/10: ladvise speed: 0.705215
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.527497
Iter 7/10: OSS cache speed: 0.666503
Iter 7/10: ladvise speed: 0.48782
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.566283
Iter 8/10: OSS cache speed: 0.671568
Iter 8/10: ladvise speed: 0.629337
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.462527
Iter 9/10: OSS cache speed: 0.556989
Iter 9/10: ladvise speed: 0.736036
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.673167
Iter 10/10: OSS cache speed: 0.816974
Iter 10/10: ladvise speed: 0.829914
Average uncached read: .55
Average speedup with OSS cached read:  .64 = +16.36%
Average speedup with ladvise willread:  .65 = +18.18%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21886: @ô‘-V: < 20 : syntax error: operand expected (error token is "< 20 ")
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21900:   >  : >  : syntax error: operand expected (error token is ">  ")
running in VM 'kvm', ignore error
 sanity test_255a: @@@@@@ IGNORE (env=kvm): Speedup with willread is less than  .32%, got .65% 
  Trace dump:
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6475:error_ignore()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6490:error_not_in_vm()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21901:ladvise_willread_performance()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21982:test_255a()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6817:run_one()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6864:run_one_logged()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6690:run_test()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21984:main()