I'm using e1000 cards.
According to oprofile, around 50% of the time is spent in the e1000
driver. 
Given that my load average is still under 0.5, I suspect I've got plenty
of room for the driver to handle more traffic before I need to worry too
much.
 

________________________________

From: Vaidas M [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, 6 November 2007 9:32 PM
To: Leigh Sharpe
Subject: RE: [Bridge] Lowering CPU utilisation



What kind of NIC you are using?

I suggest you to use cards with NAPI featured in driver.

 

_      _     _    _   _  _ _ __ ___ ____ _____

Vaidas M. 

 

From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Leigh
Sharpe
Sent: Thursday, November 01, 2007 12:00 AM
To: [email protected]
Subject: [Bridge] Lowering CPU utilisation

 

Hi All, 

 I have a box with 12 bridges on it, each of which has 2 ports.

When the traffic level on the box reaches around 15-20Mbps on each
bridge, my CPU utilisation gets to about 90-95%.

I would like to avoid working the CPU that hard. Is there anything which
can be done to get the CPU utlilisation down a bit? I have plans for an
even bigger bridge, but these results indicate that it may not scale
quite that well.

 

Regards,
             Leigh

 

 

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