From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: increasing the number of guests (NR_DYNIRQS)
Date: Sat, 20 Feb 2010 13:41:03 +0000
Message-ID: <C7A596EF.AD05%keir.fraser@eu.citrix.com>
References: <1266666881.6555.48.camel@tpost-desktop>
Mime-Version: 1.0
Content-Type: text/plain;
	charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <1266666881.6555.48.camel@tpost-desktop>
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: "echo@echoreply.us" <echo@echoreply.us>, Luke S Crawford <lsc@prgmr.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
List-Id: xen-devel@lists.xenproject.org

On 20/02/2010 11:54, "Tim Post" <echo@echoreply.us> wrote:

>> #define NR_DYNIRQS           1024
>> 
>> (it defaults to 256)
> 
> I've done the same thing several times without breaking anything. What I
> could not see is how much more expensive 1024 is than 256. Like you, I
> had hosts with guests way north of 200 that did very little, so ...

Yeah, could even just change to 1024 statically. I don't think it's very
expensive.

 -- Keir