== sanity test 255a: check 'lfs ladvise -a willread' ===== 09:52:26 (1761313946)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 2.11986 s, 49.5 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: 0.688332
Iter 1/10: OSS cache speed: 0.854256
Iter 1/10: ladvise speed: 0.833588
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.740647
Iter 2/10: OSS cache speed: 0.867183
Iter 2/10: ladvise speed: 0.947751
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.71151
Iter 3/10: OSS cache speed: 0.896592
Iter 3/10: ladvise speed: 0.854717
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.701271
Iter 4/10: OSS cache speed: 0.833195
Iter 4/10: ladvise speed: 0.861447
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.714687
Iter 5/10: OSS cache speed: 0.925539
Iter 5/10: ladvise speed: 0.953232
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.749049
Iter 6/10: OSS cache speed: 0.922878
Iter 6/10: ladvise speed: 0.91144
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.745345
Iter 7/10: OSS cache speed: 0.858652
Iter 7/10: ladvise speed: 0.88344
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.737767
Iter 8/10: OSS cache speed: 0.933863
Iter 8/10: ladvise speed: 0.953886
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.710931
Iter 9/10: OSS cache speed: 0.859239
Iter 9/10: ladvise speed: 0.854057
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.737695
Iter 10/10: OSS cache speed: 0.876918
Iter 10/10: ladvise speed: 0.905604
Average uncached read: .72
Average speedup with OSS cached read:  .88 = +22.22%
Average speedup with ladvise willread:  .89 = +23.61%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21871: P
ÓV: < 20 : syntax error: operand expected (error token is "< 20 ")
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21885:   >  : >  : 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  .44%, got .89% 
  Trace dump:
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6498:error_ignore()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6513:error_not_in_vm()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21886:ladvise_willread_performance()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21967:test_255a()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6840:run_one()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6887:run_one_logged()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6713:run_test()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21969:main()