[Klug-general] Swapfiles

Matthew Macdonald-Wallace matthew at truthisfreedom.org.uk
Thu Aug 10 10:28:05 BST 2006

Peter Childs wrote:
> On 10/08/06, Matthew Macdonald-Wallace <matthew at truthisfreedom.org.uk>
> wrote:
>> Hi all,
>> I've just setup my home sever which acts as both a firewall/router and a
>> webserver for testing sites.  I've just looked at the output from "top"
>> and it's showing that I've only got about 7MB of physical RAM left for
>> use, (out of 512MB!) however my 1GB Swap partition isn't even being used
>> (about 224K)!
>> Is there any way I can get apache or any other process on the system
>> (They're mainly dynamic websites using PHP/MySQL, so I think this could
>> be the issue!) to use swap more than Physical RAM so that I don't keep
>> suffering from these windows-like service outages caused by the memory
>> filling up?
>> Cheers,
>> Matt
> You've probably only just booted and nothing is in need of more
> memory. Leave it a day or even just a couple of hours and look again,
> Swap may or may not be in use (if its not in use the computer has
> needed to use it) buffers will probably have grown (due to more files
> and stuff in use) I've never yet seen a linux machine suffering from
> "running" out of memory like windows, because linux has better memory
> allocation than windows, The only problem I've ever had is programs
> with memory leaks but they only caused problems becuase the computer
> really did run out of processor time to find enough memory (including
> swap) most people have to much swap these days. mostly due to the size
> of modern had disks,


This is after a number fo days.  It seems I need to reboot my server
once a week at the moment.  I think that I might have tracked it down to
a particular line of code, so I'll try swapping it out.



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