trinity-devel@lists.pearsoncomputing.net

Message: previous - next
Month: January 2013

Re: Potential risk of delays due to DNS in twin

From: Nick Leverton <nick@...>
Date: Fri, 25 Jan 2013 22:54:55 +0000 (UTC)
In article <201301240054.50984.slavek.banko@...>,
Slávek Banko  <trinity-devel@...> wrote:
>Hi all,
>
>I have a problem to discuss:
>
>Before long time I prepared a patch, which is included in the commit 9e3f8a7f. 
>It was based on a completely broken patch for KDE4 - commit c24ea2b4. Our 
>patch works correctly, but contains one potential risk - is dependent on DNS 
>=> on the network delays.
>
>First question is, how big is this risk, because we have a patch incorporated 
>nearly a year ago and no problems observed. The fact is that if the user will 
>have a problem with the network, probably will not even be able to open a 
>remote window. However, this risk actually exists.

It is possible that one DNS lookup may freeze for a while on a generally
working link, if you hit a DNS server that does not respond.

I have my suspicions about Plasma on KDE4 but I haven't noticed this
causing any general hang on Trinity up to 3.5.13.

Nick
-- 
"The Internet, a sort of ersatz counterfeit of real life"
	-- Janet Street-Porter, BBC2, 19th March 1996