If this was an existing installation and the CPU load suddenly increased you might want to check where the queries are coming from. Not so long ago I found what appeared to be a brute force attack on DNS server by sending the same queries over and over from the same range of IPs in Romania. Blacklisting that range resolved the issue.
-----Original Message----- From: bind-users-boun...@lists.isc.org [mailto:bind-users-boun...@lists.isc.org] On Behalf Of Fajar A. Nugraha Sent: Saturday, September 26, 2009 2:47 PM To: Bind Cc: Bind Users List Subject: Re: Bind-9.6 and Heavy Cpu Load On Sun, Sep 27, 2009 at 1:28 AM, Bind <b...@dci.ir> wrote: > The number of requests is 2700 recieved pps and 2500 transmit pps. > also i forced it to use both cpu`s,(in prstat -a command the STATE > column,shows named uses cpu0 then after moment it changed to cpu2) but heavy > cpu load exists. Assuming: - the numbers you gave are queries per second - your v880 has 1.5GHz Ultra sparc III CPU (or similar) and considering: - BIND's atomic locking performs better on some platform than others (my experience was on x86 vs ppc) - query per second numbers on http://groups.google.com/group/comp.protocols.dns.bind/browse_thread/thr ead/376a455035df10c6 I'd say you're probably cpu bound and there's nothing much you can do about it. You already disabled logging, right? This is just a rough estimate though, YMMV. If you have a 2 or 4-way x86 server you can try it and see if it performs better. -- Fajar _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users Please consider our environment before printing this e-mail or attachments. ---------------------------------- CONFIDENTIALITY NOTICE: This e-mail may contain privileged or confidential information and is for the sole use of the intended recipient(s). If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you. ---------------------------------- _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
