List Archive: gentoo-desktop
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On Friday 12 January 2007 03:41, Duncan <1i5t5.duncan@...> wrote
about '[gentoo-desktop] Re: CD player recommendations ??':
> "Boyd Stephen Smith Jr." <bss03@...> posted
> 200701111413.31743.bss03@..., excerpted below, on Thu, 11
> 2007 14:13:19 -0600:
> > [I'm a little fuzzy here as to weather a read-only
> > page is ever written to actual swap space, the kernel may just
> > remember where (on disk) the original is keep and release the real
> > memory page.]
> That's for local disk, anyway. It's very possibly (and reasonably so)
> different with NFS and other remote file systems, where local swap may
> be rather faster and more dependable than access to the remote file
Or, on a system where (e.g.) /home is on RAID 6 across 5 disks, and swap is
on RAID 0 across 5 disks (same disks possibly). In this case I/O to swap
is nearly twice as fast, so it may be reasonable to sometimes swap out
pages that are backed by files or even *filesystem cache*. This is, in
fact, fairly similar to my current setup.
You can invent even more esoteric system profiles where (e.g.) swap is many
times faster than a particular filesystem, especially for small
(page-size) random writes, even without introducing a network.
"If there's one thing we've established over the years,
it's that the vast majority of our users don't have the slightest
clue what's best for them in terms of package stability."
-- Gentoo Developer Ciaran McCreesh