pass uses higher cpu than hit

[kioto mitsubisi]

> From: reader_1000 at hotmail.com
> Hi,
> 
> First, I am making requests to page which Varnish caches and CPU usage of Varnish is around 17% on average:
> 
> Second, I am making requests to page which Varnish passes to the backend since it is a static page and I cannot purge it timely when it changes therefore I prefer Varnish not to cache it. However, for this scenario CPU usage of Varnish is around 78% on average:
> 
> It seemed a little bit strange to since I directly pass the request to the backend without any additonal processing. Could you please help me to find the reason? Where should I look for: operating system, backend, Varnish parameters? 

Hi,

Has anyone experienced a similar issue? Is it related to tcp connection establishment cost? What is the recommended keepalive value for backend which resides on the same machine with Varnish?

Thanks. 		 	   		  
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