Messages in this thread | | | Date | Fri, 30 Dec 2005 22:51:36 -0500 | From | Kurt Wall <> | Subject | Re: [patch 00/2] improve .text size on gcc 4.0 and newer compilers |
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On Fri, Dec 30, 2005 at 03:03:22AM +0100, Tim Schmielau took 0 lines to write:
> http://www.physik3.uni-rostock.de/tim/kernel/2.6/deinline.patch.gz > The resulting kernel actually booted (am running it right now). However, > catching just these low-hanging fruits doesn't get me anywhere near > Arjan's numbers. For my non-representative personal config I get (on > i386 with -unit-at-a-time): > > > size vmlinux* > text data bss dec hex filename > 2197105 386568 316840 2900513 2c4221 vmlinux > 2144453 392100 316840 2853393 2b8a11 vmlinux.deinline
For two more datapoints, also from an x86_64 2.6.15-rc7 kernel, here are the values for my main desktop .config and an allyesconfig .config. The .deinline kernels have the above patch applied and are also built with CONFIG_CC_OPTIMIZE_FOR_SIZE=y.
$ size vmlinux.krw* text data bss dec hex filename 2338371 462208 479920 3280499 320e73 vmlinux.krw 2309384 468168 479920 3257472 31b480 vmlinux.krw.deinline
.text is only 1.24% smaller
For an allyesconfig, the results are slightly worse:
$ size vmlinux* text data bss dec hex filename 24076648 7465782 1996904 33539334 1ffc506 vmlinux 23791161 7513590 1996904 33301655 1fc2497 vmlinux.deinline
.text is only 1.19% smaller
Kurt -- Nothing cures insomnia like the realization that it's time to get up. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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