On Wed, Feb 27, 2008 at 11:50 AM, Holger Kipp <[EMAIL PROTECTED]> wrote: > On Wed, Feb 27, 2008 at 09:50:16AM -0500, Mike Tancsa wrote: > > more details below. as it currently is, polling seems to do > the trick, however handling several em-interfaces with the > same irq (mind you, it is pci) shouldn't cause delays of > up to 1.5 seconds for a simple ping... Therefore I consider > using polling for a nearly idle system more a workaround > than a solution to this problem :-( > > > At 05:49 AM 2/27/2008, Holger Kipp wrote: > > > > >I therefore assume that the problem is between receiving the > > >irq from em<x> and getting the data from the interface on the firewall > > >itself. > > > > I would try upgrading to 6.3R (there are several em driver bug fixes) > done. system is now 6.3-RELEASE-p1 which also gave me -c option for pciconf > and msi syscontrols (were missing in the old 6.2). > > > > and then try the box with > > % cat /boot/loader.conf > > hw.pci.enable_msi=1 > > > > ...if the cards support msi. > > > > I think pciconf -lvc should tell you if the cards and slots support it or > > not. > > pciconf -lvc says for all em<x>: > cap 05[d0] = MSI supports 1 message, 64 bit > so I assume they do support MSI. > > with msi disabled I get > > 38 packets transmitted, 38 packets received, 0% packet loss > round-trip min/avg/max/stddev = 4.833/228.022/1539.337/339.768 ms > > with msi enabled (via sysctl) I get > > 33 packets transmitted, 33 packets received, 0% packet loss > round-trip min/avg/max/stddev = 1.865/156.421/1339.841/239.375 ms > > so looks equally bad (I don't consider 30-40 packets a meaningful sample). > I don't know if it makes any differences if switched on directly in > loader.conf, though. > > enabling polling (withous MSI) gives > > 30 packets transmitted, 30 packets received, 0% packet loss > round-trip min/avg/max/stddev = 0.366/0.790/1.339/0.290 ms > > (maybe I should have used HZ=2000 to keep it below 0.6ms ;-) > > > Also, if you dont need IPV6, use FAST_IPSEC. It does not need > > mpsafe. If you do need IPSEC and IPV6, 7.0R got rid of that restriction. > > I think this enough changes in one go for a production system ;-)
Hmmm, something is really broken here that POLL just is just bypassing, what was the adapter type exactly (pciconf -l). Sorry, but I must have missed this email earlier. Jack _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"