Posted by Peter Dimitrios on 22 April 2008 at 15:55
A nice compendium of information about linux tuning, written in very understandable prose.
However, I do have a minor, annoying nit to pick .. the word "principal" is used in many places where I believe the word "principle" is meant. Just read the difference between principal and principle ( http://www.bartleby.com/64/C003/0244.html ) and search for "principal" in the document.
Posted by Michael Schwartz on 23 April 2008 at 5:33
Yikes, that's a great one! That should not have made it past the editor... Thanks for bringing it to our attention Peter!
Posted by David Watts on 23 April 2008 at 14:08
Thanks Peter. There are plans to update this paper some time in 2008, so if that happens I'll make sure we fix this problem.
Posted by Stephen Neidinger on 10 December 2008 at 11:27
An additional way I've used tcpdump and ethereal is to use tcpdump with the -w option and capture raw data to a file using a .cap extension. Then using ethereal, display the results. Example:
# tcpdump -vv -w /path/my-tcpdump-file.cap
Posted by Sorrel Jakins on 15 June 2009 at 13:15
ethereal is now called wireshark - version 1.2 is due to be released tomorrow (6/16/2009) go to http://wireshark.org
for more info. There is also some free jumpstart training for wireshark (• Wireshark Jumpstart: Master Key Tasks for Troubleshooting (Free) - June 23, 2009 @ 10:00AM PDT/GMT-7) at
Posted by Chapman o on 31 May 2012 at 5:12
IO bi: Blocks sent to a block device (blocks/s)
bo: Blocks received from a block device (blocks/s)