== sanity test 255a: check 'lfs ladvise -a willread' ===== 18:09:41 (1776204581)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 2.40769 s, 43.6 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: 0.440742
Iter 1/10: OSS cache speed: 0.525862
Iter 1/10: ladvise speed: 0.562039
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.416159
Iter 2/10: OSS cache speed: 0.521082
Iter 2/10: ladvise speed: 0.499714
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.397611
Iter 3/10: OSS cache speed: 0.506381
Iter 3/10: ladvise speed: 0.551057
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.421558
Iter 4/10: OSS cache speed: 0.506176
Iter 4/10: ladvise speed: 0.537432
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.42927
Iter 5/10: OSS cache speed: 0.559076
Iter 5/10: ladvise speed: 0.446995
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.357228
Iter 6/10: OSS cache speed: 0.469743
Iter 6/10: ladvise speed: 0.520351
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.407965
Iter 7/10: OSS cache speed: 0.482124
Iter 7/10: ladvise speed: 0.49377
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.452431
Iter 8/10: OSS cache speed: 0.442034
Iter 8/10: ladvise speed: 0.513873
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.429806
Iter 9/10: OSS cache speed: 0.541077
Iter 9/10: ladvise speed: 0.468025
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.453053
Iter 10/10: OSS cache speed: 0.49186
Iter 10/10: ladvise speed: 0.549091
Average uncached read: .42
Average speedup with OSS cached read:  .50 = +19.04%
Average speedup with ladvise willread:  .51 = +21.42%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21886: `VÒ|U: < 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  .25%, got .51% 
  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()