Messages in this thread | | | Date | Tue, 6 Apr 2004 00:16:41 +0200 | From | Andrea Arcangeli <> | Subject | Re: -mmX 4G patches feedback |
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On Mon, Apr 05, 2004 at 03:35:23PM -0600, Eric Whiting wrote: > 4G of virtual address is what we need. Virtual address space is why the -mmX > 4G/4G patches are useful. In this application it is single processes (usually
Indeed.
> 3.5:1.5 appears to be a 2.4.x kernel patch only right?
Martin has a port for 2.6 in the -mjb patchset (though it only works with PAE disabled but there are patches floating around to make it work at not noticeable cost with PAE enabled too).
Note if you never run sysscalls you're probably fine with 4:4, I'd recommend to lower the timer irq back to 100 HZ though (2000 mm switch per second is way too much for number crunching with 4:4, it's way too much even with 3:1, with 3:1 is something like 1% slowdown just due the more frequent irqs [on a mean 1-2Ghz box], with 4:4 should be a lot lot worse than that). - 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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