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Date: Wed, 7 Jan 2009 20:03:36 -0800 (PST)
From: Roland McGrath <roland@...hat.com>
To: Sam Ravnborg <sam@...nborg.org>
Cc: linux-kernel@...r.kernel.org
Subject: kbuild vs ccache
make clean; ccache -s > before-`git describe`; make -j9; ccache -s > after-`git describe`; diff -u {before,after}-`git describe`
v2.6.28:
-cache hit 737661
-cache miss 979624
-called for link 78268
+cache hit 738093 = +432
+cache miss 980524 = +900
+called for link 78289 = +21
multiple source files 373
compile failed 5679
preprocessor error 1594
-not a C/C++ file 44512
+not a C/C++ file 44549 = +37
1332 cacheable
58 uncacheable
v2.6.28-7485-g9e42d0c:
-cache hit 738096 = +9
+cache hit 738105
cache miss 980524 = +0
-called for link 78293
+called for link 79659 = +1366
multiple source files 373
compile failed 5679
preprocessor error 1594
-not a C/C++ file 44549 = +1384
+not a C/C++ file 45933
9 cacheable
2750 uncacheable
What changed?
Thanks,
Roland
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