== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:30:26 (1776180626)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 1.99506 s, 52.6 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: 0.595925
Iter 1/10: OSS cache speed: 0.734324
Iter 1/10: ladvise speed: 0.911719
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.731223
Iter 2/10: OSS cache speed: 0.946698
Iter 2/10: ladvise speed: 0.722489
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.642783
Iter 3/10: OSS cache speed: 0.794249
Iter 3/10: ladvise speed: 0.808463
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.646986
Iter 4/10: OSS cache speed: 0.865314
Iter 4/10: ladvise speed: 0.890542
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.671273
Iter 5/10: OSS cache speed: 0.776731
Iter 5/10: ladvise speed: 0.927011
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.668148
Iter 6/10: OSS cache speed: 0.779528
Iter 6/10: ladvise speed: 0.923715
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.70373
Iter 7/10: OSS cache speed: 0.85053
Iter 7/10: ladvise speed: 0.787166
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.647506
Iter 8/10: OSS cache speed: 0.845845
Iter 8/10: ladvise speed: 0.909196
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.721995
Iter 9/10: OSS cache speed: 0.884642
Iter 9/10: ladvise speed: 0.897672
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.788723
Iter 10/10: OSS cache speed: 1.01888
Iter 10/10: ladvise speed: 0.830694
Average uncached read: .68
Average speedup with OSS cached read:  .84 = +23.52%
Average speedup with ladvise willread:  .86 = +26.47%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21950: €óf|V: < 20 : syntax error: operand expected (error token is "< 20 ")
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21964:   >  : >  : 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  .42%, got .86% 
  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:21965:ladvise_willread_performance()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:22046: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:22048:main()