On Wed, May 11, 2011 at 8:47 AM, Tom Murphy <open...@pertho.net> wrote:
> I had set up ALTQ on a 4.9 firewall box as a box in our network needed
> its sending throttled, but I noticed that while the firewall was
> throttling this machine in question, ALL connections going through the
> machine were adversely affected and slow. Interactive SSH sessions had
> sometimes 1-2 seconds up to 10 seconds before keystrokes showed up.
>
> Once the machine had stopped sending all its traffic, things were fine
> again.
>
> I am not sure if the hotplug ppb and em(4) / bge(4) issue of shared
> interrupts could be applied here or not. The box happily forwards
> traffic without lag if I turn ALTQ off on it. However, this is not
> an option as we cannot go past 100 megabits on our connection.
>
> I also noticed I had to jack qlimit up to 8000 to stop getting lots of
> packets being dropped.
>
> Machine is a Dell PowerEdge R210. It's running amd64. I tried i386 on it
> and it was unstable, so switched it to amd64.
>
> Yes, it has ipmi enabled, but ipmi does not appear to cause any issues.
> It's only when ALTQ is enabled.
>
> Any ideas? Would this stuff be fixed in -current? I'd try -current on
> it, but need to convince management.
>
> Thanks,
> Tom
>
> The altq line in /etc/pf.conf:
>
> altq on em0 priq bandwidth 95Mb qlimit 8000 queue { bulk, std, mail,
> ssh, web, vpn, dns, ack }
>http://marc.info/?l=openbsd-misc&m=129371647818083&w=2 ?
