On 02/06/13 00:16, Jonathan Marsden wrote:
On 06/01/2013 03:30 PM, Yorvyk wrote:
I've not found any down sides to zRAM with more than 512 MiB of
RAM. Below that, especially with CPUs below 1GHz, there are
frequent pauses as memory gets swapped about when the zRAM
allocation has been used up and swap starts using the disk
partition/file. Above 2GiB of RAM zRAM doesn't appear to have much
effect.
And this is the problem... when you *really* need it, on older slower
PCs with little RAM, zRAM doesn't work as smoothly as some seem to be
suggesting. Using it on a 2GB Lubuntu machine seems somewhat
pointless... you already have enough RAM for most normal desktop
usage purposes in that case.
My sense is that zRAM probably helps most in a fairly small set of
machines that have decent CPUs *and* limited RAM... maybe 1.5GHz to
2GHz dual core CPUs and 512MB to 1GB of RAM? But I don't think that
is all that common, and such machines can often add more RAM, which
is the right way to prolong their usefulness, I think.
Looks like there is some confirmation of this:-
"Netbooks: Market is now getting flooded with these "lightweight
laptops". These are memory constrained but have CPU enough to drive
on compressed memory (e.g. Cloudbook features 1.2 GHz processor!)."
From http://code.google.com/p/compcache/
--
Steve
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