== sanity test 255a: check 'lfs ladvise -a willread' ===== 16:29:57 (1776198597)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 2.66721 s, 39.3 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: 0.873725
Iter 1/10: OSS cache speed: 0.943265
Iter 1/10: ladvise speed: 1.11193
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.813285
Iter 2/10: OSS cache speed: 0.971552
Iter 2/10: ladvise speed: 1.22101
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.723141
Iter 3/10: OSS cache speed: 0.84926
Iter 3/10: ladvise speed: 0.749127
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.794436
Iter 4/10: OSS cache speed: 0.942335
Iter 4/10: ladvise speed: 1.15527
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.843149
Iter 5/10: OSS cache speed: 0.913227
Iter 5/10: ladvise speed: 1.0023
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.806408
Iter 6/10: OSS cache speed: 1.10362
Iter 6/10: ladvise speed: 1.03875
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.855393
Iter 7/10: OSS cache speed: 0.878146
Iter 7/10: ladvise speed: 1.04489
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.698691
Iter 8/10: OSS cache speed: 0.862499
Iter 8/10: ladvise speed: 1.11334
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.82238
Iter 9/10: OSS cache speed: 1.02916
Iter 9/10: ladvise speed: 1.15118
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.816729
Iter 10/10: OSS cache speed: 0.872972
Iter 10/10: ladvise speed: 0.800861
Average uncached read: .80
Average speedup with OSS cached read:  .93 = +16.25%
Average speedup with ladvise willread:  1.03 = +28.75%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21886: @D’õU: < 20 : syntax error: operand expected (error token is "< 20 ")
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21900:  1 >  : 1 >  : 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  .46%, got 1.03% 
  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()