On Fri, 14 Nov 1997 10:06:02 +0800 (WST) SO Kwok Tsun wrote:
> According to David J N Begley's mail...
> >
> > On Wed, 12 Nov 1997, SO Kwok Tsun wrote:
> >
> > > have 832M and so it should not a problem of swap. If we do ordinary
> > > nslookup, it's quite fast. However, all 20 dnsservers are busy. I
> > > have started a dnsserver manually and the response is very slow even
> > > I query a local hostname.
> >
> > Is "nscd" running? If so, check "/etc/nscd.conf" and ensure that the
> > line:
> >
> > enable-cache hosts no
> >
> > is uncommented.
> >
> >
> > dave
> >
>
> Thanks a lot.
>
> You are right. After uncomment this line and restart nscd, it works
> much better now. Just wonder why nscd affect that much on the
> performance.
nscd is a bottleneck because it serialises all DNS requests.
You can analyse the dnsserver process of squid using 'truss'.
Ernst
Received on Fri Nov 14 1997 - 00:42:51 MST
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