On Thu, Apr 08, 2010 at 11:27:10AM -0700, Jack Vogel wrote:
> You know, I'm wondering if the so-called ALTQ fix, which makes the TX
> start always queue is causing the problem on that side?
> 

I'm not sure because I didn't configure ALTQ so it might be NOP for
non-ALTQ case.

> Jack
> 
> 
> On Thu, Apr 8, 2010 at 11:22 AM, Jack Vogel <jfvo...@gmail.com> wrote:
> 
> >
> >
> > On Thu, Apr 8, 2010 at 11:17 AM, Pyun YongHyeon <pyu...@gmail.com> wrote:
> >
> >> On Thu, Apr 08, 2010 at 10:46:22AM -0400, Mike Tancsa wrote:
> >> >
> >> > OK, some more data... It seems dhclient is getting upset as well
> >> > since the updated driver
> >> >
> >> > Apr  8 10:28:37 ich10 dhclient[1383]: DHCPDISCOVER on em0 to
> >> > 255.255.255.255 port 67 interval 6
> >> > Apr  8 10:28:38 ich10 dhclient[1383]: ip length 328 disagrees with
> >> > bytes received 332.
> >> > Apr  8 10:28:38 ich10 dhclient[1383]: accepting packet with data
> >> > after udp payload.
> >> > Apr  8 10:28:38 ich10 dhclient[1383]: DHCPOFFER from 192.168.xx.1
> >> > Apr  8 10:28:40 ich10 dhclient[1383]: DHCPREQUEST on em0 to
> >> > 255.255.255.255 port 67
> >> > Apr  8 10:28:40 ich10 dhclient[1383]: ip length 328 disagrees with
> >> > bytes received 332.
> >>   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> >>
> >> Try this patch. It should fix the issue. It seems Jack forgot to
> >> strip CRC bytes as old em(4) didn't strip it, probably to
> >> workaround silicon bug of old em(4) controllers.
> >>
> >>
> > Actually it did strip it, but its buried in the code in an obscure way,
> > that's
> > what I just realized by looking at the old code. having the hardware strip
> > will be easier I think.
> >
> >
> >> It seems there are also TX issues here. The system load is too high
> >> and sometimes system is not responsive while TX is in progress.
> >> Because I initiated TCP bulk transfers, TSO should reduce CPU load
> >> a lot but it didn't so I guess it could also be related watchdog
> >> timeouts you've seen. I'll see what can be done.
> >>
> >
> > Will look at that as well.
> >
> > Thanks!
> >
> > Jack
> >
> >
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