Date: Mon, 3 Jul 2006 11:57:58 +0200 From: "Daan Vreeken [PA4DAN]" <Danovitsch@vitsch.net> To: nocturnal <nocturnal@swehack.se> Cc: freebsd-questions@freebsd.org Subject: Re: Interrupt using all the CPU Message-ID: <200607031157.58675.Danovitsch@vitsch.net> In-Reply-To: <44A8D770.5060808@swehack.se> References: <44A8D770.5060808@swehack.se>
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On Monday 03 July 2006 10:38, nocturnal wrote: > Hi > > I'm having a few problems with a webserver. Today the idle was at 0.0 > and it's still like this. It doesn't look like it's affecting web > services but it looks weird and i'm afraid that the CPU is working it's > ass off with something. Of course nothing shows up in top or ps that > could indicate which process is taking up all this cpu and since > interrupt is the one using it i'm not even sure anything is actually > using up CPU since i don't know what interrupt is. Any hints or pointers > would be appreciated. > > It looks like interrupt and system are fighting for percents, interrupt > has 100% constantly and as soon as interrupt drops system takes exactly > what's left over and sometimes system doesn't do it so idle gets a few > percents. It's weird to me simply because i can't find a description of > what interrupt shows in top anywhere in the manuals. Try "vmstat -i" to show you what device is causing the interrupts. grtz, Daan
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