* Hard lockups under high CPU load with DynTicks - RCU Related?
@ 2014-09-23 7:32 Mike Lothian
2014-10-02 20:03 ` Paul E. McKenney
0 siblings, 1 reply; 2+ messages in thread
From: Mike Lothian @ 2014-09-23 7:32 UTC (permalink / raw)
To: Linux Kernel Mailing List
Hi
I've raised https://bugzilla.kernel.org/show_bug.cgi?id=84131 and
attempted to bisect
The bug I'm stumbling on happens on both and Intel Sandybridge and AMD
Kabini system - it manifests itself as a hard lockup when the system
is under high load
If I switch off DynTicks the problem doesn't happen - I bisected by
compiling Chromium marking each one good or bad if the system starts
to lockup
I'm not sure if I've filed the bug under the right Product / Component
Please let me know if you'd like any more diagnostics
Cheers
Mike
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Hard lockups under high CPU load with DynTicks - RCU Related?
2014-09-23 7:32 Hard lockups under high CPU load with DynTicks - RCU Related? Mike Lothian
@ 2014-10-02 20:03 ` Paul E. McKenney
0 siblings, 0 replies; 2+ messages in thread
From: Paul E. McKenney @ 2014-10-02 20:03 UTC (permalink / raw)
To: Mike Lothian; +Cc: Linux Kernel Mailing List
On Tue, Sep 23, 2014 at 08:32:02AM +0100, Mike Lothian wrote:
> Hi
>
> I've raised https://bugzilla.kernel.org/show_bug.cgi?id=84131 and
> attempted to bisect
>
> The bug I'm stumbling on happens on both and Intel Sandybridge and AMD
> Kabini system - it manifests itself as a hard lockup when the system
> is under high load
>
> If I switch off DynTicks the problem doesn't happen - I bisected by
> compiling Chromium marking each one good or bad if the system starts
> to lockup
>
> I'm not sure if I've filed the bug under the right Product / Component
>
> Please let me know if you'd like any more diagnostics
The commit that your bisection located is a merge commit. Could you
please try each of the branches that were merged? That might allow
you to pinpoint the actual commit.
Thanx, Paul
^ permalink raw reply [flat|nested] 2+ messages in thread
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2014-09-23 7:32 Hard lockups under high CPU load with DynTicks - RCU Related? Mike Lothian
2014-10-02 20:03 ` Paul E. McKenney
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