8 nics limits on KVM ??

2009-01-29 Thread Yann Dupont
Too many nics. The limit seems hardcoded in qemu (in qemu/net.h), I've changed MAX_NICS from 8 to 24, and this seems to do the trick. Is there any adverse effects doing this ? Is the limit arbitrary , or there for a good reason ? Cheers, -- Yann Dupont - Service IRTS, DSI Université de

Re: massive performance drop after a while when using virtio nics

2008-09-09 Thread Yann Dupont
s sufficient ? Cheers, Mark. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Thanks for the answer, greetings, -- Yann Dupont - Service IRTS, DSI Univer

Re: massive performance drop after a while when using virtio nics

2008-09-08 Thread Yann Dupont
the tap itnerface/implementation, because of the reboot-observation. fabian Yes it is virtio. e1000 works but it is pure emulation, so : Less performance More CPU usage. This server is in pre-prod right now, So I'd rather try to help debugging the issue for the moment. greetings,

Re: massive performance drop after a while when using virtio nics

2008-09-08 Thread Yann Dupont
ch 64 bits KVM 70 on this machine. As fabian said, rebooting the kernel doesn't help, but rebooting the whole kvm guest does. No error messages as far as I can tell. The kvm guest is a clonezilla server and send lots of data. It began to crawl after 2/3 weeks of usage. Greetings, -

Re: paravirtualized windows net driver stop after some days on XP guest

2008-08-26 Thread Yann Dupont
good. Time will tell if stability is ok. Thanks for your quick answer, Best regards, -- Yann Dupont - Service IRTS, DSI Université de Nantes Tel : 02.51.12.53.91 - Mail/Jabber : [EMAIL PROTECTED] -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a mes

Re: paravirtualized windows net driver stop after some days on XP guest

2008-08-26 Thread Yann Dupont
Dor Laor a écrit : Can you please try an update version of the windows drivers? sure ! I'll do it right now. I also added a dummy installer you can use too: http://kvm.qumranet.com/kvmwiki/VirtioWindowsDrivers Regards, Dor Thanks for the fast answer Best regards, -- Yann D

paravirtualized windows net driver stop after some days on XP guest

2008-08-26 Thread Yann Dupont
they were installed in KVM-23 timeframe) I also have 2003 guests, and so far I haven't encountered the problem. Also have linux guests, with net AND disk virtio , AND high load without problem. Best Regards, -- Yann Dupont - Service IRTS, DSI Université de Nantes Tel : 02.51.12.53.91 - M