PF from OpenBSD 4.5 available as patch for 8.1-STABLE?

[Russell Cattelan]

I have not looked at this patch but you probably want to look at
http://lists.freebsd.org/pipermail/freebsd-pf/2010-October/005842.html


It is  a bit unclear from your post what problem are you trying to solve 
here? Limit the bandwidth of your linux boxes when doing scp/rsync?

-Russell

Holger Rauch wrote:
> Hi,
>
> is there such a patch? The reason why I ask for it is:
>
> I'm currently experiencing saturated network interfaces when using gigabit networking in conjunction with certain Linux driver<->NIC combos for Broadcom chips against the PF version shipped with FreeBSD 8.1 stable running on a HP ProLiant DL 180 G5 server.
>
> The problem only occurs with high throughputs (at least 30 MBytes/sec) caused by scp/rsync. Up to now, I've come accross this issue with
>
>   Broadcom Corporation NetLink BCM5787M Gigabit Ethernet PCI Express (rev 02) (tg3 driver in Linux)
>
> and
>
> Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20)
> (bnx2 driver in Linux; this is used in various HP ProLiant servers)
>
> But it doesn't occur with Intel chips and also not with this chip
>
> Broadcom Corporation NetXtreme BCM5764M Gigabit Ethernet PCIe (rev 10)
> (tg3 driver in Linux). With those NICs I can transfer 50-60 MBytes/sec via scp/rsync without any problem.
>
> I've also tried different Linux kernel versions (2.6.26 and 2.6.32). Didn't make a difference.
>
> On FreeBSD systems, I get around 22 MByte/sec when transferring files via scp. Furthermore, changing the PF rules from "modulate state" to "keep state" has also had a positive impact. I now workarounded the problem by changing all scp based cron jobs to rsync using ssh in conjunction with rsync's --bwlimit option.
>
> Thanks in advance&  kind regards,
>
>      Holger
>
>
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