By: anon (anon.delete@this.anon.com), October 31, 2008 2:32 pm
Room: Moderated Discussions
anon.moose (anon,moose@r00t.org) on 10/31/08 wrote:
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>anon (anon@anon.com) on 10/31/08 wrote:
>
>>Fetching across cachelines might count as 2.
>
>Cachelines are fairly large compared to instructions, it wouldn't affect the numbers greatly.
It fetches 16 bytes at a time, though... Does it fetch unaligned, beginning from the branch target? If so, then potentially close to 25% of fetches would be 2 icache accesses
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>anon (anon@anon.com) on 10/31/08 wrote:
>
>>Fetching across cachelines might count as 2.
>
>Cachelines are fairly large compared to instructions, it wouldn't affect the numbers greatly.
It fetches 16 bytes at a time, though... Does it fetch unaligned, beginning from the branch target? If so, then potentially close to 25% of fetches would be 2 icache accesses