Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 08 Mar 2004 00:44:48 +0100
From:      Julian <der_julian@web.de>
To:        Tony Frank <tfrank@optushome.com.au>
Cc:        current@freebsd.org
Subject:   Re: fxp0 generating lots of interrupts
Message-ID:  <86brn8z0gf.fsf@web.de>
In-Reply-To: <20040307231859.GA95924@marvin.home.local> (Tony Frank's message of "Mon, 8 Mar 2004 10:18:59 %2B1100")
References:  <86smgktjzk.fsf@web.de> <20040307231859.GA95924@marvin.home.local>

next in thread | previous in thread | raw e-mail | index | archive | help
Tony Frank <tfrank@optushome.com.au> writes:

> Hi there,
>
> On Sun, Mar 07, 2004 at 10:39:27PM +0100, Julian wrote:
>> I just replaced my old network adaptor with another one and noticed
>> that vmstat reports lots of interrupts:
>> 
>> vmstat -i | grep fxp
>> irq11: fxp0                      1532367        394
>> 
>> Is this "normal"?
>
> I guess that depends what you consider to be 'lots'?

Compared to my old RealTek-based card.

> If you are using device polling, then I expect the interrupts to be quite
> high.
> If you are not using the interface for any network traffic and it is a 
> quiet network (ie not much broadcast traffic) then I expect the volume 
> to be high.

The 394 was during "activity" of about 10 MBit/s. It's down to 200 at
the moment and there is almost no network activity at the moment.

> What makes you think you have 'lots' of interupts as opposed to 'normal level' ?

I've only compared it to my old card. Perhaps I should not have done
this, as the high interrupt frequency does not impact system
performance in any noticeable way.

Regards,
-- 
Julian Stecklina                Key-ID: 0xD65B2AB5
FA38 DCD3 00EC 97B8 6DD8  D7CC 35D8 8D0E D65B 2AB5

"I meant," said Iplsore bitterly, "what is there in 
this world that makes living worthwhile?" Death 
thought about it. "CATS," he said eventually, "CATS 
ARE NICE." - Terry Pratchett, Sourcery



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?86brn8z0gf.fsf>