Hi Poul, The traffic is steady and the server is not directly externally available , It acts as a caching server behind a load balancer for the origin servers. I have attached bandwidth graph for our perusal. What confuses is the sudden Spike in CPU usage .
Thank you. -Paras On Wed, Dec 3, 2008 at 3:43 PM, Poul-Henning Kamp <[EMAIL PROTECTED]> wrote: > In message <[EMAIL PROTECTED]>, "Paras > Fadte" writes: > >>I am faced with following performace issue with respect to Varnish. >> >>Load on Varnish increases suddenly at times. When this happens , >>"varnishhist" shows a high number of misses and the cache hit ratio >>decreases and the response time increases. > > I think this sounds pretty normal, try examining the traffic pattern > and see if coincides with the arrival of robots/spiders at your > site. > > If you want to, you can return a temporary error in vcl_miss if the > user-agent indicates a robot or spider, that way they don't pull > your entire site content into the cache. > > Poul-Henning > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > [EMAIL PROTECTED] | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. >
<<attachment: traffic.JPG>>
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