linux-kernel - Re: [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses)

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Message-ID: <alpine.LNX.2.00.1303141709000.30118@pobox.suse.cz>
Date:	Thu, 14 Mar 2013 17:09:59 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Peter Hurley <peter@...leysoftware.com>,
	Thomas Meyer <thomas@...3r.de>,
	Shawn Starr <shawn.starr@...ers.com>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>,
	linux-acpi@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>,
	Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org
Subject: Re: [3.9-rc1] irq 16: nobody cared  (was [3.9-rc1] very poor interrupt
 responses)

On Thu, 14 Mar 2013, Jiri Kosina wrote:

> > > I don't think I have seen this message on rc1+ (8343bce, to be precise), 
> > > but I have definitely seen sluggish system response on that kernel as 
> > > well.
> > > 
> > > Attaching lspci, /proc/interrupts and dmesg. 
> > 
> > Can you try to do a git bisect for this?  Is the sluggish system 
> > response clear enough that you can tell reliably when it is present and 
> > when it isn't?
> 
> That was my first thought, but unfortunately I am afraid there will be 
> point at which I will easily make a bisection mistake, as the 
> responsiveness of the system varies over time, so it's not really a 
> 100% objective measure.

So I will try a bisect, but it'll take some time so that I could claim it 
to be trustworthy.

Therefore in case anyone has any idea in parallel, I am all ears.

-- 
Jiri Kosina
SUSE Labs
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