Hi, Jairo, thanks! On Thu, Feb 5, 2009 at 3:54 AM, <jairo.card...@sun.com> wrote: > Chuanwen, > > I was trying to run iozone in cluster mode, and faced the same issue you > are. > > I found the solution. My cluster has two network interfaces, one for admin, > one to connect to the NFS share. I wanted to use jumbo frames to have > better network performance, so I enabled jumbo frames, MTU size was changed > on both interfaces to 9000. iozone uses the admin network to connect the > master and the clients. > > After I changed the MTU size back to 1500 on the admin interface, voila, > iozone worked. For some reason, when the client is trying to get back to > the master, it does not like jumbo frames. I have checked the MTU of the net interface, and it's 1500. I didn't change the default value: # ifconfig | grep MTU UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
-- wcw
