Statistics Question

Barry Margolin barmar at bbnplanet.com
Tue Feb 22 20:26:22 UTC 2000


In article <4.2.2.20000222082205.00b56460 at mail.newmodels.com>,
Jorg B. <jorg_b at cwo.com> wrote:
>Hello,
>
>We are running bind 8.2.2P5 on a Linux System (kernel 2.2.14).
>At any given time we have about 600 concurrent connections hitting the DNS 
>server. It seems that at peak times the server takes longer to respond to 
>DNS lookup requests. Therefore, I was wondering if I've reached at point 
>where I have to upgrade and/or distribute the load.
>
>Here are some numbers:
>
>This server is authoritative for 650 Internet Domain names and provides DNS 
>services to 600 concurrent customers.
>The machine is a 350 MHZ Pentium II with 128 MB of RAM an SCSI drives. It 
>connects to the network at 100MB Full duplex.

The best thing to check is "ps".  Make sure the RSS of the named process is
at least 90% of its SZ.  If not, named will page too much and will be slow.

-- 
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.



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