linux-kernel - Re: [BUG] local_softirq

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Message-Id: <200705171211.23350.kernel@prachanda.hub>
Date:	Thu, 17 May 2007 12:11:22 +0530
From:	Anant Nitya <kernel@...chanda.info>
To:	tglx@...utronix.de
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [BUG] local_softirq_pending storm

On Friday 11 May 2007 03:28:46 Thomas Gleixner wrote:

> Ok, that's consistent with earlier reports. The problem surfaces when
> one of the SMT-"cpus" goes idle. The problem goes away when you disable
> hyperthreading.
Yes with HT disabled in BIOS there is no local_softirq_pending messages. BTW 
why does this problem persist only with X ? 

> When you apply the ratelimit patch, does the softlockup problem
> persist ?
>
Yes, though softlockup is rare and mostly hit when system is under high load. 
Apart of that I am also getting following messages consistently across 
multiple boot cycles with NOHZ=y and ratelimit patch applied.

May 15 11:51:22 rudra kernel: [ 2594.341068] Clocksource tsc unstable (delta = 
28111260302 ns)
May 15 11:51:22 rudra kernel: [ 2594.343194] Time: acpi_pm clocksource has 
been installed.
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