From: Tim Post <echo@echoreply.us>
To: Keir Fraser <keir.fraser@eu.citrix.com>
Cc: Luke S Crawford <lsc@prgmr.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: increasing the number of guests (NR_DYNIRQS)
Date: Sat, 20 Feb 2010 23:43:34 +0800 [thread overview]
Message-ID: <1266680614.6555.53.camel@tpost-desktop> (raw)
In-Reply-To: <C7A596EF.AD05%keir.fraser@eu.citrix.com>
On Sat, 2010-02-20 at 13:41 +0000, Keir Fraser wrote:
> 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
I think xenstat is capped way below that, so changing this is probably
going to require some love there too, else xentop might not show all
guests.
AFAIK, it was 256, ICBW, I'll check when I get back to my desk. I
mention it so this doesn't go in without checking.
Cheers,
--Tim
next prev parent reply other threads:[~2010-02-20 15:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-20 10:53 increasing the number of guests (NR_DYNIRQS) Luke S Crawford
2010-02-20 11:54 ` Tim Post
2010-02-20 13:41 ` Keir Fraser
2010-02-20 15:43 ` Tim Post [this message]
2010-02-20 16:41 ` Dan Magenheimer
2010-02-20 13:40 ` Keir Fraser
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