packet drop with intel gigabit / marwell gigabit

Michael Vince mv at
Mon Mar 20 05:44:36 UTC 2006

I use netperf which is a pure network traffic tester I also just use 
basic 'ab/apache' tests which would also test HD/IO if getting large files.
For the 'em' driver I have seen some posts/cvs commit updates to the 
driver saying it now works better without polling then with polling. I 
think this is in -stable but it might just be in current. I haven't done 
any testing for a while.

OxY wrote:

> i changed sk to em.
> how could i measure speed or benchmark the network performance?
> ----- Original Message ----- From: "Bjoern A. Zeeb" 
> <bzeeb-lists at>
> To: "OxY" <oxy at>
> Cc: <freebsd-net at>; <freebsd-performance at>
> Sent: Sunday, March 19, 2006 7:26 PM
> Subject: Re: packet drop with intel gigabit / marwell gigabit
>> On Sun, 19 Mar 2006, OxY wrote:
>> Hi,
>>>> Just on a hunch, can you try putting the card in a different PCI  
>>>> slot? There may be interrupt routing issues.
>>> okay, i will try it in a couple days
>> the card also has a sysctl for intr moderation. See man 4 sk. The
>> default changed with Pyun's updated driver, I think, but you could
>> play with that too.
>> Further I still have the feeling that your measurings are not
>> comparable.
>> -- 
>> Bjoern A. Zeeb bzeeb at Zabbadoz dot NeT 
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