== sanity test 255a: check 'lfs ladvise -a willread' ===== 09:51:27 (1761313887)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 1.68238 s, 62.3 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=4
fail_loc=0x237
Asynchronous ladvise shouldn't wait
fail_loc=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.654353
Iter 1/10: OSS cache speed: 0.83309
Iter 1/10: ladvise speed: 0.873247
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.653503
Iter 2/10: OSS cache speed: 0.834623
Iter 2/10: ladvise speed: 0.871347
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.711923
Iter 3/10: OSS cache speed: 0.855767
Iter 3/10: ladvise speed: 0.889307
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.665828
Iter 4/10: OSS cache speed: 0.797814
Iter 4/10: ladvise speed: 0.829145
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.698406
Iter 5/10: OSS cache speed: 0.81332
Iter 5/10: ladvise speed: 0.983226
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.757283
Iter 6/10: OSS cache speed: 0.906084
Iter 6/10: ladvise speed: 0.954646
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.729404
Iter 7/10: OSS cache speed: 0.862011
Iter 7/10: ladvise speed: 0.857624
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.716605
Iter 8/10: OSS cache speed: 0.898353
Iter 8/10: ladvise speed: 0.989654
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.769478
Iter 9/10: OSS cache speed: 0.873113
Iter 9/10: ladvise speed: 0.869381
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.662619
Iter 10/10: OSS cache speed: 0.847809
Iter 10/10: ladvise speed: 0.891889
Average uncached read: .70
Average speedup with OSS cached read:  .85 = +21.42%
Average speedup with ladvise willread:  .90 = +28.57%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21871: @/ë8ëU: < 20 : syntax error: operand expected (error token is "< 20 ")
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21885:   >  : >  : 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 .90% 
  Trace dump:
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6498:error_ignore()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6513:error_not_in_vm()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21886:ladvise_willread_performance()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21967:test_255a()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6840:run_one()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6887:run_one_logged()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6713:run_test()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21969:main()