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> > Is the basic assumption that lower block numbers are generally located > > in zones nearer the outside of the disk still true, though? I.E. do > > you know of any disks that 'start from the middle'? I usually > > recommend that people place their swap and /var partitions near the > > beginning of the disk, (for a _slight_ improvement), but maybe there > > is a good reason not to do this for some disks? > > I generally put swap in the middle of the disk, not on the > "fastest" end. The "fast" end is faster for large transfers, > but that isn't what swap is about. Well, I was thinking of machines that are really starved of physical RAM, 32 MB or less, even down to 4 MB. I generally run swapless on 'real' machines :-). Also, the higher capcity tracks mean less seeks, so the chance of not having to seek at all increases slightly. > Swap tends to have lots of small transfers now and then, in between > other io. So you want a short seek from wherever the > access arm is to keep latency down, and the middle of the > disk has short way both from inner and outer tracks. Yeah, that would probably be a better idea for machines which are only really hitting swap on occasions, instead of all the time :-). John. - 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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