empty content

Stein Ove Rosseland steinove at vg.no
Thu Oct 4 10:54:35 CEST 2007

When the number of requests gets high enough (4000+ req/s), varnish
sometimes delivers empty content. Varnish doesnt crash, but gives a 200
OK, and no more. Ive seen this before where the backend server is
overloaded, but that is not the case here.

GET /live/index.php?live2op=getKamp&kamp_id=1002596 HTTP/1.1
Host: sport.vg.no
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:
Gecko/20070914 Firefox/
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://www.vg.no/
Cache-Control: max-age=0

HTTP/1.x 200 OK

and no more.

I currently dont have any logs from the varnishserver, but can try to
pull out something usefull later.
Varnish 1.1.1 is running on centos 4.5 64bit

Any ideas?

Stein Ove

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