Max size of one swap slice

Kris Kennaway kris at
Wed Aug 6 18:59:44 UTC 2008

Lin Jui-Nan Eric wrote:
> On Wed, Aug 6, 2008 at 12:46 AM, Chuck Swiger <cswiger at> wrote:
>> It's hard to conceive of why you'd want to add so much swap space, anyway--
>> if you've got programs which actually need to deal with 10s of gigabytes
>> worth of data, then they ought to maintain a smaller/reasonable-sized
>> working set in RAM and do disk I/O as needed themselves rather than depend
>> upon the VM pager, anyways.
> We are running varnish, and found that it is not stable while using mmap mode.
> We don't know whether if the problem is in the code of varnish or file
> system, but
> we found that if we run varnish using malloc mode with big swap, it
> became stable.
> Thank you all for the information, I'll try to look into the kernel code.



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