| Date | Wed, 6 Jun 2001 10:25:14 +0100 | From | Sean Hunter <> | Subject | Re: Break 2.4 VM in five easy steps |
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On Wed, Jun 06, 2001 at 11:16:27AM +0200, Xavier Bestel wrote: > On 06 Jun 2001 09:54:31 +0100, Sean Hunter wrote: > > > This is what Linus recommended for 2.4 (swap = 2 * RAM), saying that > > > anything less won't do any good: 2.4 overallocates swap even if it > > > doesn't use it all. So in your case you just have enough swap to map > > > your RAM, and nothing to really swap your apps. > > > > > > > For large memory boxes, this is ridiculous. Should I have 8GB of swap? > > Life is tough. If guess if you have 4GB RAM, you'd be better having no > swap at all. Or, yes, at least 8GB. > Or just wait for this bug to be fixed. But be patient.
This is just pure bollocks. Virtual memory is one of the killer features of unix. It would be a strange admission to say that our "advanced" 2.4 kernel is so advanced that now you can't use virtual memory at all on large machines. Needing 8GB of swap to prevent a box from committing suicide when it has a working set of less than 512M is crazy.
I am waiting patiently for the bug to be fixed. However, it is a real embarrasment that we can't run this "stable" kernel in production yet because somethign as fundamental as this is so badly broken.
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