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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi all,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>Sorry, I’m not sure to be in the right place to ask my question, if not do not hesitate to tell me where to do so.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Here is my problem, I’m using a vanilla kernel 3.14.34 (patched with PaX/Grsecurity) on a virtual machine (ubuntu 14.04) made to be an openstack tenant router (so using netns and ovs). I’m experiencing a really slow bandwidth while routing traffic through a namespace between 2 VM on 2 different vlan (tagged with ovs).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Here is a picture representing my issue :<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><a href="http://postimg.org/image/dcs55r7nl/">http://postimg.org/image/dcs55r7nl/</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Tests were done with iperf. As you can see I have only 80kb/s with the vanilla kernel (I have actually the same low bandwidth without patching with grsecurity so the problem cannot come from here) (red color) and about 4Gb/s with your kernel. I took the same .config as yours to compile it.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>So my questions are : is there a patch applied to make it work ? Could you help me ?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I can provide you any information required. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Thank you.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>