On Tue, Aug 04, 2009 at 04:00:43PM -0700, Andrew Morton wrote : > On Mon, 3 Aug 2009 16:58:18 +0200 > Albin Tonnerre <albin.tonnerre@xxxxxxxxxxxxxxxxxx> wrote: > > This is the first part of the lzo patch > > The lzo compressor is worse than gzip at compression, but faster at > > extraction. Here are some figures for an ARM board I'm working on: > > Uncompressed size: 3.24Mo > > gzip 1.61Mo 0.72s > > lzo 1.75Mo 0.48s > > So for a compression ratio that is still relatively close to gzip, it's > > much faster to extract, at least in that case. > Is 3.2Mb a typical kernel size for small systems? It sounds large. This one actually embeds an initramfs which accounts for about half of the size. > > +#ifdef STATIC > What is this STATIC thing for? That's what is currently used to test whether you're compiling the pre-boot environment. eg. include/linux/decompress/mm.h uses this to determine whether it should provide a malloc() implementation or simply #define malloc(a) kmalloc(a, GFP_KERNEL), and a lot of similar things -- Albin Tonnerre, Free Electrons Kernel, drivers and embedded Linux development, consulting, training and support. http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
