== sanity test 255a: check 'lfs ladvise -a willread' ===== 14:34:27 (1776191667)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 3.13361 s, 33.5 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: 0.479889
Iter 1/10: OSS cache speed: 0.579028
Iter 1/10: ladvise speed: 0.542067
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.5273
Iter 2/10: OSS cache speed: 0.599058
Iter 2/10: ladvise speed: 0.623633
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.513796
Iter 3/10: OSS cache speed: 0.531695
Iter 3/10: ladvise speed: 0.532399
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.465954
Iter 4/10: OSS cache speed: 0.521357
Iter 4/10: ladvise speed: 0.534083
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.435174
Iter 5/10: OSS cache speed: 0.585709
Iter 5/10: ladvise speed: 0.531146
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.373188
Iter 6/10: OSS cache speed: 0.586026
Iter 6/10: ladvise speed: 0.481245
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.473647
Iter 7/10: OSS cache speed: 0.535911
Iter 7/10: ladvise speed: 0.497175
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.420196
Iter 8/10: OSS cache speed: 0.495813
Iter 8/10: ladvise speed: 0.553564
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.444909
Iter 9/10: OSS cache speed: 0.584661
Iter 9/10: ladvise speed: 0.416837
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.454311
Iter 10/10: OSS cache speed: 0.545791
Iter 10/10: ladvise speed: 0.532158
Average uncached read: .45
Average speedup with OSS cached read:  .55 = +22.22%
Average speedup with ladvise willread:  .52 = +15.55%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21950: ÀE™/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  .27%, got .52% 
  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()