[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] Network stalls
Hello, I recently set a new server (a HP Proliant with 2 Quad Xeon 2GHz and 8GB RAM), with a Slackware 13 64Bits, where I installed Xen 4.0, with the kernel 2.6.31.13 (the same for dom0 and for domU), and I set up a virtual mail server from which several people retrieve its mail. When i try to download big files or retrieve big mails from that server, it often start to slow down to 4-5Kb/s untill it finally stalls after some minutes of normal download (800-500Kb/s), it doesn't happen nor in the same point of download, nor to the same users/computers. A user can try to download a mail, for example, 20 times without any success at all and then suddenly it starts to download correctly, and it seems to rarely happen with small mails. I tried to deactivate the ethernet checksuming, as I've seen to solve the problem in former versions, but it gives me an error getting the rx value: # ethtool -k eth0 Offload parameters for eth0: Cannot get device rx csum settings: Operation not supported rx-checksumming: off tx-checksumming: off By the way, my dmesg has a bunch of these errors: "Attempting to checksum a non-TCP/UDP packet, dropping a protocol 1 packet" I'm not sure if this is also a related problem or not. Now I don't have any clue about what or where to look, so, any ideas? _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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