<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><div>I saw you are using CentOS 7. I built the package with RHEL 7 (they are binary compatible).<br></div><div>About the testing just which normal usage you should see improvements in bandwidth and<br></div><div>reactivity.<br></div><div><br></div><div>Changes from current CentOS package:<br></div><div>- used a newer version, there are couple of changes that decrease latency;<br></div><div>- additional patches to improve bandwidth usage (for small drawing this should decrease<br></div><div> bandwidth usage by a 15-20%);<br></div><div>- additional patch to decrease a bandwidth limitation due to a peculiar half-duplex usage<br></div><div> of spice protocol (this is clearly visible with high latency connections);<br></div><div>- additional patch to decrease packet fragmentation due to TCP_NODELAY usage.<br></div><div><br></div><div>Alternatively would be helpful for us to get a local reproduction of the problem.<br></div><div>OpenVPN configuration files would be helpful (we don't need any security<br></div><div>detail like keys, ip, host or system names, just to understand the type of VPN,<br></div><div>encryption parameters, compression, additional latency introduced and so on).<br></div><div><br></div><div>The fact that you are not able to get a record from the guest means that the QXL<br></div><div>(guest <-> server) protocol how the spice-server is handling guest command is<br></div><div>fine. The fact that on the client you can see clearly such slowness is due to spice<br></div><div>protocol, the connection/vpn, some spice-server implementation and possibly<br></div><div>client implementation too. Unfortunately too much stuff to be able to point the<br></div><div>finger to one of them.<br></div><div>I tried some test and did this:<br></div><div>- opened task manager on Windows 7;<br></div><div>- switched to performance tab;<br></div><div>- maximized task manager;<br></div><div>- double clicked on CPU usage to get only CPU usage and history.<br></div><div>When CPU usage change I can see the flickering on CPU usage but not on<br></div><div>the history graphs. It this the kind of flickering you are noticing?<br></div><div><br></div><div>Frediano<br></div><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><div><br></div><div dir="ltr"><div><div>For which distro is that package ?<br>Centos 7.2 ? rhel7.3beta or fedora24 ?<br><div><br></div>Rob Verduijn<br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-09-14 15:59 GMT+02:00 Frediano Ziglio <span dir="ltr"><<a href="mailto:fziglio@redhat.com" target="_blank">fziglio@redhat.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-family:times new roman,new york,times,serif;font-size:12pt;color:#000000"><div>Could you test at least? Would be very helpful. We could then backport some improvements.<span class="HOEnZb"><span style="color: #888888;" data-mce-style="color: #888888;" color="#888888"><br></span></span></div><span class="HOEnZb"><span style="color: #888888;" data-mce-style="color: #888888;" color="#888888"><div><br></div><div>Frediano<br></div></span></span><div><div class="h5"><div><br></div><blockquote style="border-left:2px solid #1010ff;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt"><div><br></div><div dir="ltr"><div>thanx,I'll stick with the centos packages, <br><div><br></div>I need a very good reason before I start using beta packages.<br></div><div>And a nice to have feature is not one of them.<br><div><br></div></div><div>Also I dug in to the openvpn tweaks and it seems that all of them are related to udp tunnels.<br></div><div>Performance is sadly rather low when you have to use tcp (like me) because the firewall is managed by a third party.<br><div><br></div></div><div>Rob Verduijn<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-09-14 15:49 GMT+02:00 Frediano Ziglio <span dir="ltr"><<a href="mailto:fziglio@redhat.com" target="_blank">fziglio@redhat.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-family:times new roman,new york,times,serif;font-size:12pt;color:#000000"><div><div><blockquote style="border-left:2px solid #1010ff;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt"><div><br></div><div dir="ltr"><div><div>Hello,<br><div><br></div></div>I'm trying to improve my spice performance on a kvm host/guest.<br></div><div>It's currently rather slow and I can see screens beeing build up, and delays when draging windows.<br></div><div><br></div><div>It's being tunneled through openvpn, which is set to use tcp. <br>tcp required because of the firewall which is maintained by 3rd party.<br><div><br></div></div><div>I have full access to the kvm host, kvm guest and openvpn server.<br><div><br></div></div><div>Have you got any tips so that I can improve spice performance ?<br></div><div>I alrready am running tuned with the virtual-guest profile for guests and host profile for the host.<br></div><div>All systems are runnning CentOS 7<br></div><div><br></div><div>Any tips for :<br></div><div>- the KVM host ? <br></div><div>- the KVM guest ?<br></div><div>- the openvpn server ?<br><div><br></div></div><div>Cheers<br></div><div>Rob Verduijn<br></div></div></blockquote></div></div><div>Hi,</div><div> can you try version at <a href="https://www.datafilehost.com/d/b07f008e" target="_blank">https://www.datafilehost.com/d/b07f008e</a> ?<br></div><div><br></div><div>The sha1 hash (please check it) is 0e2191c363e109475aeb2bff401e699f0a07a795.<br></div><div><br></div><div>Be prepare for the rollback, it's not a version meant for production usage.<span><span style="color:#888888"><br></span></span></div><span><span style="color:#888888"><div><br></div><div>Frediano<br></div><div><br></div></span></span></div></div></blockquote></div><br></div> </blockquote><div><br></div></div></div></div></div></blockquote></div><br></div> </blockquote><div><br></div></div></body></html>