Messages in this thread | | | Date | Tue, 24 Jan 2006 07:21:38 +1100 | From | Peter Chubb <> | Subject | Re: [RFC] VM: I have a dream... |
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>>>>> "Jamie" == Jamie Lokier <jamie@shareable.org> writes:
Jamie> Chase Venters wrote: >> Just as a curiosity... does anyone have any guesses as to the >> runtime performance cost of hosting one or more swap files (which >> thanks to on demand creation and growth are presumably built of >> blocks scattered around the disk) versus having one or more simple >> contiguous swap partitions?
>> I think it's probably a given that swap partitions are better; I'm >> just curious how much better they might actually be.
Jamie> When programs must access files in addition to swapping, and Jamie> that includes demand-paged executable files, swap files have Jamie> the _potential_ to be faster because they provide opportunities Jamie> to use the disk nearer the files which are being accessed.
If you can, put your swap on a different spindle...
Actually, the original poster's `dream' looked a lot like a single-address-space operating system, such as Mungi ( http://www.cse.unsw.edu.au/~disy/Mungi/ ) -- Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au http://www.ertos.nicta.com.au ERTOS within National ICT Australia - 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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