Date: Mon, 2 Apr 2007 18:03:38 -0400 (EDT) From: Rob Watt <rob@hudson-trading.com> To: freebsd-net@freebsd.org Cc: rob work <rob@hudson-trading.com> Subject: Re: em driver packet loss in 6.2 amd64 (RELEASE and STABLE) Message-ID: <Pine.OSX.4.64.0704021758100.26093@cpe-24-90-130-108.nyc.res.rr.com> In-Reply-To: <Pine.OSX.4.64.0704021013390.24760@cpe-24-90-130-108.nyc.res.rr.com> References: <Pine.OSX.4.64.0704021013390.24760@cpe-24-90-130-108.nyc.res.rr.com>
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Nevermind. After some more research it seems that we were having problems with the risers cards on some of our servers. I will do some more testing after the riser cards are replaced to see if we still have multicast drops when using 6.2. Most likely it was purely a hardware problem. Since it was the same exact behavior that we saw with the earlier version of the em driver I figured it was the same bug resurfacing again. - Rob Watt On Mon, 2 Apr 2007, Rob Watt wrote: > Hi, > > In 6.1-RELEASE there were a number of em driver stability and performance > issues. We would regularly see packet loss at low to moderate load. A number > of patches were applied that completely fixed the problem for us. > > We installed 6.2-RELEASE, but even though 6.2 is supposed to have a stable em > driver, we are noticing the same packet loss problem again. We updated to > STABLE, and we didn't see any packet drops in our first day of testing, but > today we are seeing packet drops again. > > Has anyone else experienced this? Are there known problems with the STABLE em > driver? > > Our hardware: > > tyan s5372 motherboard (bios v1.05) > 2 intel x5355 processors > adaptec aic7902 scsi daughter card > there are 4 em interfaces (2 on-board, 2 from an add-on card), but we > are currently only using em0 > > We have experienced the packet drop problem with a custom kernel and with the > RELEASE SMP kernel. > > - > Rob Watt >
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