Re: [E1000-devel] Question regarding TX/RX latency with certain intel controllers

2015-02-27 Thread Ralf Grosse Boerger
Thanks for your quick response. > The hardware causing you problems is likely the cpu power management > hardware. We don't support the driver you mention, but you may want to > try doing something in your OS to keep the cpu awake, like this: > > /bin/bash > alias haha="while true; do echo -n .

Re: [E1000-devel] Question regarding TX/RX latency with certain intel controllers

2015-02-26 Thread Brandeburg, Jesse
On Thu, 2015-02-26 at 12:07 +, Ralf Grosse Boerger wrote: > Hi, > > I have been measuring UDP roundtrip times with several different Intel > Gigabit Ethernet Controllers (on two Haswell based systems, peer to > peer connection). > There seems to be a quite large variation in roundtrip time wit

[E1000-devel] Question regarding TX/RX latency with certain intel controllers

2015-02-26 Thread Ralf Grosse Boerger
Hi, I have been measuring UDP roundtrip times with several different Intel Gigabit Ethernet Controllers (on two Haswell based systems, peer to peer connection). There seems to be a quite large variation in roundtrip time with newer controllers getting worse numbers. I was expecting round trip t