To keep track of your system’s CPU load averages you will need to install the sar program. This program is usually found in the sysstat package. To install sysstat on Centos or Fedora type the following command as root: yum install sysstat Viewing statistics Type the following command to get today’s CPU load average statistics: sar -q | less The output of sar is piped to the … [Read more...]
Useful commands
September 4, 2011 By Leave a Comment
Useful Commands Check system usage, updated every second: vmstat 1 Check jow much free ram you have on your system: free -m Check I/O utilization on your drive(s): iostat -dkx Clear Memory Cache sync | echo 3 > /proc/sys/vm/drop_caches … [Read more...]
Monitor network traffic with iftop
September 4, 2011 By Leave a Comment
Install iftop Product Name: IFTOP Product Version: 0.17 Homepage: http://www.ex-parrot.com/~pdw/iftop/ Description: ftop does for network usage what top(1) does for CPU usage. It listens to network traffic on a named interface and displays a table of current bandwidth usage by pairs of hosts. Handy for answering the question “why is our ADSL link so slow?” From Centos EPEL Repo: yum … [Read more...]
WebPage Speed Test
July 15, 2011 By Leave a Comment
Run a free website speed test from multiple locations around the globe using real browsers (IE and Chrome) and at real consumer connection speeds. You can run simple tests or perform advanced testing including multi-step transactions, video capture, content blocking and much more. Your results will provide rich diagnostic information including resource loading waterfall charts, Page Speed … [Read more...]