All of lore.kernel.org
 help / color / mirror / Atom feed
From: Qing He <qing.he@intel.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: [RFC] irq rate limit
Date: Thu, 10 Sep 2009 17:17:38 +0800	[thread overview]
Message-ID: <20090910091738.GD25462@ub-qhe2> (raw)
In-Reply-To: <20090909141219.GC9418@phenom.dumpdata.com>

On Wed, 2009-09-09 at 22:12 +0800, Konrad Rzeszutek Wilk wrote:
> On Wed, Sep 09, 2009 at 04:48:25PM +0800, Qing He wrote:
> > This is a poc patch of guest irq ratelimit. The main motivation is
> > to ensure Xen's responsiveness during an irq storm, that caused by
> > improper hardware or drivers. If one interrupt is fired at a high
> 
> What kind of hardware exhibits this?

I happened to see this on some network cards using MSI, everything just
hung up. And to some extent, the driver of the device can control this.
If assigned devices of one of the guests behave this way, at least other
guests should still be operable.

Thanks,
Qing

      reply	other threads:[~2009-09-10  9:17 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-09-09  8:48 [RFC] irq rate limit Qing He
2009-09-09  8:48 ` Keir Fraser
2009-09-09  9:07   ` Qing He
2009-09-09  9:29     ` Keir Fraser
2009-09-10  9:05       ` Qing He
2009-09-15 13:10       ` [PATCH] irq ratelimit Qing He
2009-09-16  8:17         ` Keir Fraser
2009-09-09 14:12 ` [RFC] irq rate limit Konrad Rzeszutek Wilk
2009-09-10  9:17   ` Qing He [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20090910091738.GD25462@ub-qhe2 \
    --to=qing.he@intel.com \
    --cc=konrad.wilk@oracle.com \
    --cc=xen-devel@lists.xensource.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.