[CentOS] Load Average ~0.40 when idle
listmail at entertech.com
Sun Jul 20 01:03:03 UTC 2008
On Sat, 19 Jul 2008 20:26:24 -0400, Dan Halbert wrote
> listmail wrote:
> > Good suggestion. Disconnecting the Ethernet cables from the NICs did not
> > make a difference. However, shutting down the interfaces (e.g ifdown eth0,
> > ifdown eth1) did cut the load average down to nothing (0.00).
> > So it wasn't actual traffic, but something that the interfaces were doing,
> > or something that was trying to talk to one or both of them.
> That's interesting. A few ideas (I'm just trying divide and conquer
> here -- I don't have a hypothesis):
> 1. See if it's one interface or the other. Does just shutting down
> one make a difference?
Nope. If either one is up, I see the load run up. Ethernet connected or not.
> 2. Use tcpdump on the interface to see what's going on there, even
> when the cables are disconnected. (I may be wrong about seeing
> anything when it's disconnected; you may not see any traffic if the
> driver knows nothing can go out.)
Can't see any traffic with the interfaces up and the Ethernet connected.
> 3. Do "chkconfig --list" to find out which services are on, and shut
> them down one by one to see if one is the offender.
I shut off everything, and the problem remained until I at last shut off
the network service.
Thanks for the ideas - I'm beginning to suspect a bug in the kernel or the
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