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Re: [Xen-users] crazy SWAP and RAM idea
| To: | "SH Solutions" <info@xxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-users] crazy SWAP and RAM idea |
| From: | "Christoph Purrucker" <cp+ml-xen@xxxxxxxx> |
| Date: | Fri, 8 Sep 2006 13:03:52 +0200 (CEST) |
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| Delivery-date: | Fri, 08 Sep 2006 04:04:47 -0700 |
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Hi Steffen, > The idea to solve this, is a follows: > 1. Give every domU as few memory as possible. (16MB?) > 2. Give dom0 a huge fast swap space (several GB?) > 3. Create a "RAMDRIVE" in dom0 in that swap. > 4. Create domU's swap partitions on dom0's ramdrive. > > The reason would be that dom0 can now "really" swap in pages as *REALLY* > needed from/to harddrive. > DomU's would then "only" swap from/to a partition that really is RAM and > as such really fast. - You have no file system cache any more. - Swapping in a ramdrive means to double-memcopy and many overhead. - You may swap-to-death Dom0 because the memory needed by tmpfs will swap out other important Dom0 processes. But feel free to try it and write your results here. cu cp _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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