My server is running out of memory, despite having all swap free

Posted by Biohazard on Server Fault See other posts from Server Fault or by Biohazard
Published on 2012-07-08T02:52:22Z Indexed on 2012/07/08 3:17 UTC
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debian

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memory

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swap

I am using Debian 6 (Squeeze). The server has 4gb of memory in it, and 8gb of swap. I'm starting to get memory alloc errors at high application load times, but from top command:

Mem:   4055944k total,  3915436k used,   140508k free,    10444k buffers
Swap:  7999480k total,        0k used,  7999480k free,  3604496k cached

The system isn't even trying to use the swap?

Why would this be happening? I would like to upgrade the primary memory, but this isn't possible just right now.

Thanks.

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