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Linux for little systemsLinux for little systemsPosted Dec 30, 2003 21:30 UTC (Tue) by joern_engel (guest, #4663)In reply to: Linux for little systems by gnb Parent article: Linux for little systems Actually, cache size shouldn't matter too much, as it is de-facto zero anyway. Unless things go horribly wrong, most CPU-time is spend in userspace, not in the kernel. Therefore, the userspace will flush out most kernel instructions from the cache before switching to kernelspace again. Therefore, the cache is always cold, when it comes to the kernel. With a cold cache, smaller code is also faster code. Your bottle-neck is the memory-bus.
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