[cfe-dev] Clang indexing library performance

[Tobias Grosser]

On 10/02/2011 10:06 AM, Alexander Bolodurin wrote:
> On 02/10/2011, at 10:34 AM, Tobias Grosser wrote:
>
>> >  On 10/01/2011 10:34 AM, Alexander Bolodurin wrote:
>> >  Can you send me your new results, either only with the parse() change, and then with both the parse() and the complete() change.
>> >
>> >  Thanks and cheers
>> >  Tobi
> parse only:
>
> parse 3.55141305923
> complete 2.60280609131
> complete 2.53132414818
> complete 2.54255604744
> complete 2.50854682922
>
> parse + complete:
>
> parse 3.58968901634
> complete 2.62985301018
> complete 2.55927109718
> complete 2.54651212692
> complete 2.55211901665
OK. This is not very convincing.

> I have also tried to eliminate the middlemen completely and use C interface directly using this tool:https://gist.github.com/758615  from this clang_complete bug report:https://github.com/Rip-Rip/clang_complete/issues/17  which you have already read, as I can see.

OK. Let's get a common baseline. Can you run the complete tool (from the 
bug report) on the attached boost.cc file (taken from the very same bug 
report, you need boost installed) and compare it with my results.

------------------------------------------------------------
 > export LIBCLANG_TIMING=1
 > $./a.out boost.cc 16 10 > /dev/null
Parsing boost.cc:   1.3400 (100.0%)   0.1000 (100.0%)
                     1.4400 (100.0%)   1.4527 (100.0%)
Precompiling preamble:   1.8800 (100.0%)   0.0900 (100.0%)
                          1.9700 (100.0%)   1.9999 (100.0%)
Reparsing boost.cc:   2.0800 (100.0%)   0.1200 (100.0%)
                       2.2000 (100.0%)   2.2548 (100.0%)
Code completion @ boost.cc:16:10:   0.1800 (100.0%)   0.1800 (100.0%)
				    0.1901 (100.0%)
------------------------------------------------------------

The autocompletion takes for me 0.20 seconds and is significantly 
shorter than the parsing. Do you get something similar?

Cheers
Tobi
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