Bugs item #1884444, was opened at 2008-02-01 15:30 Message generated for change (Comment added) made by alain_knaff You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=1884444&group_id=180599 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: qemu Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Alain Knaff (alain_knaff) Assigned to: Anthony Liguori (aliguori) Summary: Virtual network (set up via TCP socket) dog slow, but vde ok Initial Comment: I've got two kvm virtual machines that I connect to gether via a virtual network: 1. A samba server (Kubuntu 7.10), whose network I set up with -net nic,vlan=1,macaddr=00:1B:FC:1C:00:01 -net socket,vlan=1,listen=127.0.0.1:1234 2. A Windows XP client, whose network I set up with -net nic,vlan=1,macaddr=00:1B:FC:1C:01:11 -net socket,vlan=1,connect=127.0.0.1:1234 The Windows XP VM has joined the Samba VM's domain. When a domain user logs in, it takes litterally _minutes_ until its profile data is copied to the client, and same thing to copy it back to the server on logout. Setting up both with VDE, it's *much* quicker (only a couple of seconds, rather than minutes for login/logout). I also tried udp mcast networking, but couldn't get both VMs to communicate with each other. A tcpdump on the host shows traffic on port 1234. However, a tcpdump on the Kubuntu guest shows no traffic (not even arp) when I try to ping it from the windows VM ---------------------------------------------------------------------- >Comment By: Alain Knaff (alain_knaff) Date: 2010-06-28 00:13 Message: Even in kvm 1:84, as shipped with Kubuntu 10.04 (based on QEMU 0.12.3), this is still an issue (although not quite as bad as it used to be) Moreover it takes quite a while until the windows VM requests an address via dhcp ---------------------------------------------------------------------- Comment By: Jes Sorensen (jessorensen) Date: 2010-06-14 08:21 Message: Hi, Per Anthony's add, any chance you could let us know if this problem was resolved? I am trying to go through the old bugs and if this one is fixed, I'd like to close it. Thanks, Jes ---------------------------------------------------------------------- Comment By: Anthony Liguori (aliguori) Date: 2008-05-26 19:16 Message: Logged In: YES user_id=120449 Originator: NO I suspect this is related to whether SIGIO was enabled on the file descriptors. With the recent IO thread refactorings, this should be fixed. Please test if you can or I will queue it up to test myself. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=1884444&group_id=180599 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
