Mailinglist Archive: opensuse (1420 mails)

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Re: [opensuse] optimizing resolv.conf
  • From: Per Jessen <per@xxxxxxxxxxxx>
  • Date: Fri, 03 Jan 2014 17:43:04 +0100
  • Message-id: <la6pb4$lhj$>
Greg Freemyer wrote:

On Thu, Jan 2, 2014 at 10:20 PM, James Knott <james.knott@xxxxxxxxxx>
James Knott wrote:
Isn't a DNS cache included in the browser or operating system

Check nscd. It's used in openSUSE for name server caching. man nscd
for details. Firefox also has a DNS cache. So, using a caching DNS
server won't provide much improvement for a single computer.

slightly OT:

I just used wireshark to watch chrome page refresh with Windows 7. I
happened to have susestudio open on a page with no advertising and few
graphics. the result was 4 outbound DNS queries for to
my DNS server in 3 seconds. So chrome v31 does not cache DNS even
during a single page refresh.

An application really should not be caching, it should leave that to
nscd or a caching dns.

Per Jessen, Zürich (7.1°C) - dedicated server rental in Switzerland.

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