From: Robert Olsson <Robert.Olsson@data.slu.se>
To: P@draigBrady.com
Cc: Robert Olsson <Robert.Olsson@data.slu.se>,
Harald Welte <laforge@netfilter.org>,
netdev@oss.sgi.com
Subject: Re: TX performance of Intel 82546
Date: Wed, 15 Sep 2004 17:41:42 +0200 [thread overview]
Message-ID: <16712.25270.406341.584928@robur.slu.se> (raw)
In-Reply-To: <41484AC2.8090408@draigBrady.com>
P@draigBrady.com writes:
> So I'm guessing that increasing the PCI-X burst size setting
> (MMRBC) will automatically get more packets sent per transfer?
> I said previously in this thread to google for setpci and MMRBC,
> but what I know about it is...
>
> To return the current setting(s):
>
> setpci -d 8086:1010 e6.b
>
> The MMRBC is the upper two bits of the lower nibble, where:
>
> 0 = 512 byte bursts
> 1 = 1024 byte bursts
> 2 = 2048 byte bursts
> 3 = 4096 byte bursts
>
> For me to set 4KiB bursts I do:
>
> setpci -d 8086:1010 e6.b=0e
Thanks!
That should definitely be tested. Four runs w. pktgen should be enough.
--ro
next prev parent reply other threads:[~2004-09-15 15:41 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-15 8:14 TX performance of Intel 82546 Harald Welte
2004-09-15 9:18 ` P
2004-09-15 12:18 ` jamal
2004-09-15 14:02 ` Harald Welte
2004-09-15 14:46 ` jamal
2004-09-15 14:55 ` Andi Kleen
2004-09-15 12:36 ` Robert Olsson
2004-09-15 13:49 ` jamal
2004-09-15 15:33 ` Robert Olsson
2004-09-15 13:59 ` P
2004-09-15 15:41 ` Robert Olsson [this message]
2004-09-15 18:15 ` Harald Welte
2004-09-15 18:15 ` David S. Miller
2004-09-15 17:55 ` Harald Welte
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