Messages in this thread |  | | Subject | Re: odd memory behaviour in 2.4.15 | Date | Tue, 13 Nov 2001 22:39:37 +0000 (GMT) | From | Alan Cox <> |
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> I have a separate linux machine with identical hardware > running 2.4.15 which also ran well, until I upgraded its > memory to 4GB. Then it ran 3 times slower than with 1 GB of RAM.
We end up copying data around a lot more with the 4 or 64Gb kernels. Some of this unneccessarily. It may be down to your workload it might be a vm quirk. Do the boxes all run the same workload.
Jens Axboe has patches for some setups that basically kill the slowdown for all cases providing your I/O controller is sane - 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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