<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div><blockquote type="cite" class=""><div class="">On May 12, 2016, at 4:31 AM, Hal Murray <<a href="mailto:hmurray@megapathdsl.net" class="">hmurray@megapathdsl.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class=""><br class=""><a href="mailto:gem@rellim.com" class="">gem@rellim.com</a> said:<br class=""><blockquote type="cite" class="">Easy to use, but in practice I have not found the RasPi ethernet to perform<br class="">any worse than a GigE port on a motherboard. <br class=""></blockquote><br class="">Most of the GigE chips have the option to batch interrupts. That's good for <br class="">throughput since it reduces the CPU load due to interrupts but bad for things <br class="">like NTP since it adds latency and probably jitter.<br class=""><br class="">I don't have any numbers handy. It would be interesting to run a few <br class="">experiments.<br class=""><br class="">Does anybody have the recipe handy for disabling that?<br class=""></div></div></blockquote><br class="">`ethtool` is what you are looking for. There are multiple options that might have the effect you mention above.<br class=""><div><blockquote type="cite" class=""></blockquote></div></div><div><br class=""></div><div>`<span style="font-family: Menlo; font-size: 11px;" class="">ethtool -c eth0` will show you how the device is currently configured. </span></div><div><span style="font-family: Menlo; font-size: 11px;" class=""><br class=""></span></div><div><span style="font-family: Menlo; font-size: 11px;" class="">`</span><span style="font-family: Menlo; font-size: 11px;" class="">ethtool -C eth0</span><span style="font-family: Menlo; font-size: 11px;" class="">` allows you to change the settings.</span></div><br class=""></body></html>