[rt-users] Apache2 CPU hungry !
michele.pinassi at unisi.it
Thu Oct 27 04:52:13 EDT 2011
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this is the problem ! There's a lot of memory and CPU usage but, on that
machine, there's ONLY RT 4.0.2 !!!!!
It's a normal behaviour ?
On 26/10/2011 21:38, Kevin Falcone wrote:
> On Wed, Oct 26, 2011 at 09:21:51AM +0200, Michele Pinassi wrote:
>> Hi all,
>> my RT 4.0.2 installation is too CPU hungry, expecially for apache2
>> threads. Here's the HTOP display of processes and threads:
> That doesn't show high CPU usage, but it does show you being
> dangerously close to swap. When an Apache server starts heavily using
> swap, you get into swap death where a lot of CPU is wasted copying
> apache children in and out of swap space.
> You either need to prune back your apache children to fit comfortably
> in 1G of ram (and tune the max to never go above your memory
> availability) or give the machine more RAM. Keep in mind that a
> default apache may spawn 8 children, but be able to spawn another 20+
> children when required and that can push you off a memory cliff.
> RT Training Sessions (http://bestpractical.com/services/training.html)
> * Washington DC, USA ? October 31 & November 1, 2011
> * Barcelona, Spain ? November 28 & 29, 2011
|| Michele Pinassi
|| System Manager Area Sistema Biblioteche - UniSi
|| Assistenza: +39.577.232299 (int. 2299)
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