On Sat, 27 Oct 2012, Jerry Geis wrote: > I have a CentOS 5.8 box that is dropping packets (just from ping). > The network is 8139 RTL-8139/8139C/8139C+ Rev 10 > > Adding the parameters "pci=noacpi acpi=off " > has helped but it still happens. > > Is there something else that helps the network not drop packets? Upgrade to Centos 6. I have approx 20 jetway mini-itx boxes with a built in 8139. I recently had all but 2 experience large packet loss problems. Some of them were happily running C-5 for over 2 years. Upgrading them to C-6 solved it but I do not know why. I too would really like to understand what is going on here. In addition, I would like to know why I still have 2 boxes that are happily running c-5. I suspect that this is some kind of driver issue but I even tried upgrading the drivers using those supplied by EL-Repo. The only thing that improved the situation was upgrading to C-6. FWIW, I use them as router/firewalls. They have a 3 port daughter board for a total of 4 Ethernet ports on them that I have recently switched to using an Intel based chipset just as a precaution. HTH, -- Tom me at tdiehl.org Spamtrap address me123 at tdiehl.org