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On Sun, 2003-02-23 at 20:50, Martin J. Bligh wrote: > >> And the baroque instruction encoding on the x86 is actually a _good_ > >> thing: it's a rather dense encoding, which means that you win on icache. > >> It's a bit hard to decode, but who cares? Existing chips do well at > >> decoding, and thanks to the icache win they tend to perform better - and > >> they load faster too (which is important - you can make your CPU have > >> big caches, but _nothing_ saves you from the cold-cache costs). > > > > Next step: hardware gzip ? > > They did that already ... IBM were demonstrating such a thing a couple of > years ago. Don't see it helping with icache though, as it unpacks between > memory and the processory, IIRC. I saw the L2/L3 compressed cache thing, and I thought "doh!", and I watched and I've not seen it for a long time. What happened to it ? - 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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