Date: Tue, 9 Mar 2004 09:57:17 -0800 (PST) From: Doug White <dwhite@gumbysoft.com> To: Alfred Perlstein <alfred@freebsd.org> Cc: current@freebsd.org Subject: Re: diagnosing interrupt storms? Message-ID: <20040309095540.U69332@carver.gumbysoft.com> In-Reply-To: <20040309071912.GM56622@elvis.mu.org> References: <20040309071912.GM56622@elvis.mu.org>
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On Mon, 8 Mar 2004, Alfred Perlstein wrote: > At a certain point after booting my SMP 5-current box gets all > weird, typically I see 50%+ time spent in interrupt. If I run "top > -S" I typically see one of the ithreads using 50% cpu. > > I'm trying to figure out what it's doing, what has gone wrong etc. > > Are there any sysctls to look at or things I can do to diagnose > this? vmstat -i is useful for figuring out exactly which interrupt is storming, although the ithread might hint it too. Which one is it? -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org
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