On 8/14/13 10:19 AM, "Richard Cochran" <[email protected]> wrote:
>On Wed, Aug 14, 2013 at 03:23:06PM +0000, Vick, Matthew wrote: >> On 8/14/13 12:31 AM, "Richard Cochran" <[email protected]> wrote: >> >> >> I believe changing options does make a difference for the 82576. At >>least, >> I had issues with E2E in the past--I would need to re-test to confirm if >> there is still an issue or not. I remember getting Rx packets to be >> timestamped too close together, which the 82576 cannot support, but I >>did >> grab the tip of the ptp4l tree and not a stable release at the time. > >Wait a minute, "Rx packets"? > >I thought the issues were with Tx packets (and the driver does try to >correctly work around this). > >The issue reported here and in Alexander's thread are about missing >transmit time stamps. That much is clear from the logs. If incoming >packets can spoil transmit time stamps, then all bets are off, and >the card is just not usable. Agreed, but the hardware can definitely Tx and Rx timestamps at the same time--I just mentioned using P2P for a general improvement on 82576. In this case, it does sound like something about the polling is likely terminating too early (as per the other thread going on). > >> Adding Jake to the thread, since I'm fairly certain that Alexander was >> using a modified driver or stack to do something non-standard, so it >> wasn't a bug with the 82576. Jake, do you remember what the root cause >>was >> on that one? > >This was never resolved, and Alex stopped responding to questions. But >he appears to me to have had the same symptoms. > >Thanks, >Richard I believe it was resolved off-list, but I look to Jake to confirm that one. Cheers, Matthew ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
