Messages in this thread | | | Date | Tue, 28 Feb 2006 07:18:20 -0500 | From | John Richard Moser <> | Subject | Re: Memory compression (again). . help? |
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Alexander E. Patrakov wrote: > John Richard Moser wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> I'm not quite sure what I'm doing or when I have time, but I'm looking >> into writing in some hooks and a compression routine to manage >> compressed memory. I have the following considerations: >> >> - Compressed memory should become "Swap." This means the kernel would >> report memory used for compressed storage as used swap. At boot it >> would reflect 0K swap; when there are 1024KiB of pages compressed in >> memory, 1024KiB of additional "swap" is reported, all used. >> - I need to stop the kernel when it's about to swap. This should be >> done when it's decided that either invalidating disk cache or >> swapping is the best course of action, and what to do with what. At >> this point I'll have to be able to see what the kernel wants to swap >> out and tell it that it's taken care of. >> - I need to catch invalid pagefaults that look for swap, as well as the >> disk cache mechanism. I'll be adding stuff to compress disk cache, >> so disk cache might need to be "swapped in" effectively. > > If you are OK with using a ery old 2.4.18 kernel, look at > http://linuxcompressed.sourceforge.net/ >
I'm actually looking to submit to mainline in the end ;P It'd be a very good permenant feature. RAM is cheap, but CPU is even cheaper; if I buy a gig of RAM and get 200M free, woohoo?
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