r361343 - [Docs] Increase Doxygen cache size

[Don Hinton via cfe-commits]

Author: dhinton
Date: Tue May 21 17:56:42 2019
New Revision: 361343

URL: http://llvm.org/viewvc/llvm-project?rev=361343&view=rev
Log:
[Docs] Increase Doxygen cache size

Summary:
When building Doxygen docs for llvm and clang, it helpfully prints a warning at
the end noting that the `LOOKUP_CACHE_SIZE` value was too small to keep all
symbols in memory.

By increasing to the size it recommends, Doxygen builds have greatly improved
performance. On my machine, time to run `doxygen-llvm` changes from 34 minutes
to 22 minutes, which is a decent amount of time saved by changing a single
number.

Reviewed By: hintonda

Patch by J. Ryan Stinnett!

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D62138

Modified:
    cfe/trunk/docs/doxygen.cfg.in

Modified: cfe/trunk/docs/doxygen.cfg.in
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/doxygen.cfg.in?rev=361343&r1=361342&r2=361343&view=diff
==============================================================================
--- cfe/trunk/docs/doxygen.cfg.in (original)
+++ cfe/trunk/docs/doxygen.cfg.in Tue May 21 17:56:42 2019
@@ -384,7 +384,7 @@ TYPEDEF_HIDES_STRUCT   = NO
 # the optimal cache size from a speed point of view.
 # Minimum value: 0, maximum value: 9, default value: 0.
 
-LOOKUP_CACHE_SIZE      = 2
+LOOKUP_CACHE_SIZE      = 3
 
 #---------------------------------------------------------------------------
 # Build related configuration options