need information on bind performance on a Sun E220
Toshio Kumagai
Toshio_Kumagai at Kumasan.ORG
Mon Jul 10 16:34:28 UTC 2000
Hi Andrew,
How much memory does your T1 have ?
###
Andrew McNamara wrote:
>
> > John> I'm trying to find out how many hits a second a Sun E220 can
> > John> handle running the latest stable release of BIND. I need
> > John> this information fast so any input is appreciated. Is there
> > John> some way for guess / calculate how many DNS requests a Sun
> > John> E220 can handle per second ?
> [...]
> >I'd guess that the E220 should handle at least 1000 queries a second
> >if the box was dedicated to DNS and the name server could provide
> >answers straight out of its cache. If the timestamps from tcpdump are
> >to be believed, the name server on my 300 Mhz Pentium II running
> >BSD/OS answers a query from its cache in ~1ms.
>
> On a 440Mhz Sparc T1 that runs nothing but bind, we find it starts
> dropping queries above around 600 per second. Compiled with the Sun
> WorkShop Compiler 5.0 and optimisation on, udp receive buffers
> increased over the default.
>
> This is a real load, rather than some benchmark - caching, primary for
> net.au, secondary for com.au. Named image is over 400MB.
>
> If you have a choice, don't run anything else on the named machine. It
> need to be able to keep it's structures in RAM and reacts very badly to
> having pages swapped out. Multiple CPU's won't help you currently
> unless you have other load on the machine. An E220 is probably wasted
> in this context - get a T1 and keep the E220 for other jobs.
>
> ---
> Andrew McNamara (System Architect)
>
> connect.com.au Pty Ltd
> Lvl 3, 213 Miller St, North Sydney, NSW 2060, Australia
> Phone: +61 2 9409 2117, Fax: +61 2 9409 2111
--
Toshio Kumagai (Toshio_Kumagai at Kumasan.ORG), Japan
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