On Thu, 7 Jun 2007, Ingo Molnar wrote:
> i have just tried your patch and it completely solves the issue! Without
> the patch, a simple script that keeps logging in on a box:
>
> while :; do ssh testbox true; done
>
> would cause glxgears to get into a very jerky motion due to the
> late
* Stephen Smalley <[EMAIL PROTECTED]> wrote:
> Can you try the patch below to see whether it helps?
>
> In security_get_user_sids, move the transition permission checks
> outside of the section holding the policy rdlock, and use the AVC to
> perform the checks, calling cond_resched after each
On Mon, 2007-06-04 at 13:27 +0200, Ingo Molnar wrote:
> a simple ssh login triggers a ~130 msecs non-preemptible latency even
> with CONFIG_PREEMPT enabled, on a fast Core2Duo CPU (!).
>
> the latency is caused by a _very_ long loop in the SELinux code:
>
> sshd-4828 0.N.. 465894us : avtab_
On Monday 04 June 2007 5:39:00 pm Stephen Smalley wrote:
> On Mon, 2007-06-04 at 17:11 -0400, Paul Moore wrote:
> > I'm not an expert on the SELinux security server guts like the other
> > people on the To/CC line of this thread, but here are my two cents on the
> > issue above.
> >
> > From what I
On Mon, 4 Jun 2007, Paul Moore wrote:
> Okay, for some reason I thought someone had found a way to make
> RCU "preemptable" through the real-time work, maybe I'm just confused
> again :)
It is preemptible in the RT kernel, but as Ingo points out, nothing should
be even trying to do something f
On Mon, 2007-06-04 at 17:11 -0400, Paul Moore wrote:
> On Monday, June 4 2007 7:27:45 am Ingo Molnar wrote:
> > a simple ssh login triggers a ~130 msecs non-preemptible latency even
> > with CONFIG_PREEMPT enabled, on a fast Core2Duo CPU (!).
> >
> > the latency is caused by a _very_ long loop in t
On Monday, June 4 2007 7:27:45 am Ingo Molnar wrote:
> a simple ssh login triggers a ~130 msecs non-preemptible latency even
> with CONFIG_PREEMPT enabled, on a fast Core2Duo CPU (!).
>
> the latency is caused by a _very_ long loop in the SELinux code:
>
> sshd-4828 0.N.. 465894us : avtab_sear
* James Morris <[EMAIL PROTECTED]> wrote:
> > the latency is caused by a _very_ long loop in the SELinux code:
> >
> > sshd-4828 0.N.. 465894us : avtab_search_node
> > (context_struct_compute_av)
>
> What do the 0DNs fields mean and what did you use to create this
> trace?
i used the la
On Mon, 4 Jun 2007, Ingo Molnar wrote:
>
> a simple ssh login triggers a ~130 msecs non-preemptible latency even
> with CONFIG_PREEMPT enabled, on a fast Core2Duo CPU (!).
Thanks for the report.
>
> the latency is caused by a _very_ long loop in the SELinux code:
>
> sshd-4828 0.N.. 465
a simple ssh login triggers a ~130 msecs non-preemptible latency even
with CONFIG_PREEMPT enabled, on a fast Core2Duo CPU (!).
the latency is caused by a _very_ long loop in the SELinux code:
sshd-4828 0.N.. 465894us : avtab_search_node (context_struct_compute_av)
sshd-4828 0.N.. 4658
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