A couple of things come to mind. One is that there was a period where drivers could not use jumbo frames. That was followed by a long period where aoe drivers reported the maximum usable payload size in `aoe-stat`, but they would never use more than 4096-byte payloads. Starting with aoe6-49, the current period began, where the payload reported by aoe-stat is able to be fully used.
So if you used to get good performance and now can't, it might just be because you were only using jumbos up to a size that your network equipment could handle well before upgrading to an aoe driver that used even bigger jumbos. You can test for that by using a 4200 MTU on your initiator network interfaces. Second, the latest drivers handle network congestion dynamically, in response to actual network conditions, and it is normal for retransmissions to occur as the "ideal" rate is momentarily exceeded and then backed away from. If you see short bursts of retransmits every few seconds, it probably isn't anything to worry about. A steady, rapid stream of retransmits could indicate a problem, and retransmits without related "unexpected responses" could also indicate a problem, specifically network packet loss. -- Ed ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Aoetools-discuss mailing list Aoetools-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/aoetools-discuss
