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From: Ben Greear <greearb@candelatech.com>
To: "'netdev@oss.sgi.com'" <netdev@oss.sgi.com>
Subject: via-rhine & rx-buffer size
Date: Wed, 04 May 2005 17:00:09 -0700	[thread overview]
Message-ID: <42796209.7050305@candelatech.com> (raw)

Hello!

I've been doing some testing with the routerboard-44 4-port Via-Rhine
NIC.  When running about 10Mbps (~1kpps) of traffic in both directions on all
4 ports, I see about 1% packet drop.  I tried adjusting the buffer sizes
like this:

#define TX_RING_SIZE	32
#define TX_QUEUE_LEN	30	/* Limit ring entries actually used. */
#define RX_RING_SIZE	64


I get slightly fewer drops (maybe, .3% or so), but I was hoping for better still.

So, first:  Any reason not to increase the buffers as show above?
(Yes, I know the part about tx buffers & QoS, so if one wants to leave
that at 16, tis fine by me).

Any ideas for other tweakings that might give me better performance?

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com

                 reply	other threads:[~2005-05-05  0:00 UTC|newest]

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