On 29.12.2013 01:21, rkwesk_ltsp wrote: > > As the switch's port to the client is also 100 Mps I think the client's > 100mps nic cannot be overloaded > per se. However, a fellow member of this list, alkisg, has since > explained to me that the buffer on the > switch will fill up since it is receiving packets from its giga port > but can only release them at its > 100 mbps port. It was this phenomenon (is it called buffer overrun?) > that I hadn't thought about. This > then forces the switch to send a pause frame to the server (in order > for its buffer to be relieved.)
Yes, exactly. I wouldn't call it buffer overrun - that would imply a programming bug. The buffer just gets full. > Now I will show complete ignorance by asking whether if in fact the > overload occurs even sooner (or more often) > if an all giga switch were in place of the above described switch and > the bottleneck was the 100 mbps nic rather > than the 100 mbps port on the above switch? Whether it is a 100Mb port or a gigabit port operating at 100Mb does not make a difference. The bottleneck will be the switch port (not the NIC!) that cannot get the data out as fast as the gigabit port gets new data in. Jakob ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
