--Apple-Mail-3--610247557 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; format=flowed Hi, We are runing a Xserve G4 cluster with SMC gigabit switch. I found the network performance is not satisfactory that file transmission speed is always limited to 12MB/s to 13 MB/s. To copy a 800MB file from one host (192.168.101.161) to another one (192.168.101.162) using FTP, it takes almost 70 seconds when the entire network is almost idle. I have verified all NIC and ports on the switch, all of them appear to be "1000base TX". And the disk IO speed is guaranteed to be over 40MB/s. We expect the average speed in gigabit ethernet should be around 30MB/s. Does any one know what might be the problem? Thank you. -- Chen Peng <chenpeng@alumni.nus.edu.sg> --Apple-Mail-3--610247557 Content-Transfer-Encoding: 7bit Content-Type: text/enriched; charset=US-ASCII Hi, We are runing a Xserve G4 cluster with SMC gigabit switch. I found the network performance is not satisfactory that file transmission speed is always limited to 12MB/s to 13 MB/s. To copy a 800MB file from one host (192.168.101.161) to another one (192.168.101.162) using FTP, it takes almost 70 seconds when the entire network is almost idle. I have verified all NIC and ports on the switch, all of them appear to be "1000base TX". And the disk IO speed is guaranteed to be over 40MB/s. We expect the average speed in gigabit ethernet should be around 30MB/s. Does any one know what might be the problem? Thank you. <fixed>-- Chen Peng <<chenpeng@alumni.nus.edu.sg> </fixed> --Apple-Mail-3--610247557--