== sanity test 255a: check 'lfs ladvise -a willread' ===== 23:51:10 (1780977070)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 3.62337 s, 28.9 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: 0.620629
Iter 1/10: OSS cache speed: 0.650889
Iter 1/10: ladvise speed: 0.527365
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.516725
Iter 2/10: OSS cache speed: 0.689368
Iter 2/10: ladvise speed: 0.665881
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.592889
Iter 3/10: OSS cache speed: 0.625513
Iter 3/10: ladvise speed: 0.699196
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.469477
Iter 4/10: OSS cache speed: 0.581885
Iter 4/10: ladvise speed: 0.692469
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.51576
Iter 5/10: OSS cache speed: 0.646146
Iter 5/10: ladvise speed: 0.810102
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.754406
Iter 6/10: OSS cache speed: 0.84448
Iter 6/10: ladvise speed: 0.778705
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.608079
Iter 7/10: OSS cache speed: 0.775325
Iter 7/10: ladvise speed: 0.847136
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.469433
Iter 8/10: OSS cache speed: 0.730722
Iter 8/10: ladvise speed: 0.694049
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.570814
Iter 9/10: OSS cache speed: 0.594388
Iter 9/10: ladvise speed: 0.657628
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.470494
Iter 10/10: OSS cache speed: 0.683733
Iter 10/10: ladvise speed: 0.686359
Average uncached read: .55
Average speedup with OSS cached read:  .68 = +23.63%
Average speedup with ladvise willread:  .70 = +27.27%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21778: @,¿V: < 20 : syntax error: operand expected (error token is "< 20 ")
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21792:   >  : >  : 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  .34%, got .70% 
  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:21793:ladvise_willread_performance()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21874: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:21876:main()