lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Fri, 4 May 2007 19:50:10 -0700
From:	"Michael Chan" <mchan@...adcom.com>
To:	"David Miller" <davem@...emloft.net>
cc:	jeff@...zik.org, netdev@...r.kernel.org
Subject: Re: [PATCH 10/11][TG3]: Reduce spurious interrupts.

David Miller wrote:

> From: "Michael Chan" <mchan@...adcom.com>
> Date: Fri, 04 May 2007 18:45:58 -0700
> 
> > We had a discussion about 2 years ago and David decided to 
> > remove the I/O read to improve performance.  Since then a
> > small number of users have been complaining about spurious
> > interrupts.  We can add back the unconditional read or do
> > this detection thing which I agree is somewhat annoying.
> > David, what do you think?
> 
> If we get an extra interrupt, we should just silently ignore it.
> 
> The performance impact of adding that thing back is just too great.
> 

In a small number of cases, we really get a ton of spurious interrupts.
We have even seen the kernel shutting off IRQ7 because of too many
unclaimed spurious interrupts.

-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists