== sanity test 255a: check 'lfs ladvise -a willread' ===== 14:05:02 (1776189902)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 3.50626 s, 29.9 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: 0.48698
Iter 1/10: OSS cache speed: 0.693253
Iter 1/10: ladvise speed: 0.774101
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.598945
Iter 2/10: OSS cache speed: 0.76592
Iter 2/10: ladvise speed: 0.82565
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.57832
Iter 3/10: OSS cache speed: 0.796076
Iter 3/10: ladvise speed: 0.632221
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.62252
Iter 4/10: OSS cache speed: 0.646172
Iter 4/10: ladvise speed: 0.78157
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.625713
Iter 5/10: OSS cache speed: 0.737576
Iter 5/10: ladvise speed: 0.75685
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.621403
Iter 6/10: OSS cache speed: 0.717858
Iter 6/10: ladvise speed: 0.680116
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.663605
Iter 7/10: OSS cache speed: 0.788257
Iter 7/10: ladvise speed: 0.764617
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.513603
Iter 8/10: OSS cache speed: 0.646515
Iter 8/10: ladvise speed: 0.784262
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.619451
Iter 9/10: OSS cache speed: 0.759487
Iter 9/10: ladvise speed: 0.688966
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.602005
Iter 10/10: OSS cache speed: 0.676866
Iter 10/10: ladvise speed: 0.790966
Average uncached read: .59
Average speedup with OSS cached read:  .72 = +22.03%
Average speedup with ladvise willread:  .74 = +25.42%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21950:  Ê8ï 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  .36%, got .74% 
  Trace dump:
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6486:error_ignore()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6501: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:6828:run_one()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6875:run_one_logged()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6701:run_test()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:22048:main()