Personally, I'd do what you said and have a look at the switch. Does the program drop the connection for the second partition tranmission? Or is there a pause between the partitions being sent? Maybe the switch is dropping the connection. I'm rather anti-HP myself. Most of our workstations are HP and they are rather unstable most of the time so I can't very well trust my network connectivity to them. Again, my personal opinion. Could it be the switch is setup on different connection speeds than the other switches? That tends to cause problems to (personal experience). I also am wondering, and this is probably my ignorance, but why do you reload fresh images every day/week? Seems a little tedious.
On Mon, 20 Apr 2009 22:49, Trever Miller wrote: > > On 20-Apr-09, at 8:28 PM, [email protected] wrote: > >> what are the limits that you are running into (network bandwidth, >> server load, packet loss, other??) >> > > Sometimes even when there is just a single udpcast session running, > point to point, on the same physical switch, and very little else > happening on that switch... well it just gets stupid. > > Drops packets until it aborts. The wrapper scripts retry a couple of > times and usually get the image to go all the way on the second try. > Sometimes manual intervention is needed and it takes 3-5 tries. > > Other times, same equipment, same switch, 12-15 machines can receive > the exact same image using unicast (a seperate udpcast session on > unique ports per sender/receiver ) and it works just fine. > > All dozen udp-send processes are running on the same image server. If > the image is small, say of just the first 12G of the disk (first > partition only) it works 99.99999% of the time first try, whether > there is one or 15 different udpcast sessions running on that segment. > > Intermittent problems would cause me to pull my hair out but I don't > have any left at this point. > > I have tweaked all manner of udpcast parameters, asked the network > guys to look at the switch, etc. > > We are using HP2848 switches, HP DL360G4 and G5 machines. CentOS 5.2 > for the image server side. > _______________________________________________ > Discuss mailing list > [email protected] > http://lopsa.org/cgi-bin/mailman/listinfo/discuss > This list provided by the League of Professional System Administrators > http://lopsa.org/ _______________________________________________ Discuss mailing list [email protected] http://lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
