== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:00:34 (1776193234)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 3.13905 s, 33.4 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: 0.472505
Iter 1/10: OSS cache speed: 0.693239
Iter 1/10: ladvise speed: 0.759899
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.71277
Iter 2/10: OSS cache speed: 0.672658
Iter 2/10: ladvise speed: 0.799202
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.677794
Iter 3/10: OSS cache speed: 0.702636
Iter 3/10: ladvise speed: 0.663112
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.692709
Iter 4/10: OSS cache speed: 0.839935
Iter 4/10: ladvise speed: 0.896757
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.659079
Iter 5/10: OSS cache speed: 0.702549
Iter 5/10: ladvise speed: 0.722888
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.731698
Iter 6/10: OSS cache speed: 0.786117
Iter 6/10: ladvise speed: 0.715961
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.590482
Iter 7/10: OSS cache speed: 0.955591
Iter 7/10: ladvise speed: 1.09023
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.798517
Iter 8/10: OSS cache speed: 0.944244
Iter 8/10: ladvise speed: 0.819638
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.909815
Iter 9/10: OSS cache speed: 1.19414
Iter 9/10: ladvise speed: 0.885269
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.606264
Iter 10/10: OSS cache speed: 0.702874
Iter 10/10: ladvise speed: 0.921744
Average uncached read: .68
Average speedup with OSS cached read:  .81 = +19.11%
Average speedup with ladvise willread:  .82 = +20.58%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21950: pKÕÖV: < 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  .40%, got .82% 
  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()