Download of the day: Vmware 2.0 Virtualization Solutions Beta Software

Posted on in Categories CentOS, Download of the day, Hardware, High performance computing, Linux, Linux Virtualization, Networking, vmware last updated October 29, 2008

VMware Server is an entry-level server virtualization solution, which is proprietary, freeware software. VMware released version 2.0 beta of Server on July 1, 2008. New version provides appliance like control using nothing but a webbrowser.

Measure Network Performance: Find Bandwidth, Jitter, Datagram Loss With Iperf

Posted on in Categories Howto, Linux, Networking, Sys admin, Troubleshooting, UNIX, Windows, Windows server last updated August 22, 2010

Typically, your user sends network throughput problems reports as they see problem with their applications such as:

[a] FTP Transfer

[b] NFS Performance

[c] HTTP / SMTP / POP3 etc

As a sys admin you should able confirm the throughput problem. iperf is the tool you are looking to find out:

a) Network throughput problem

b) Packet loss problem

c) Datagram loss

d) Delay jitter

From the man page:

iperf is a tool to measure maximum TCP bandwidth, allowing the tuning of various parameters and UDP characteristics.

iperf works on client / server model. You need to install iperf on both client computer and server computer to measure network performance between two nodes.

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