Sunday, December 31, 2006

Updates for mdb, dtrace and diskio pages

I just sent a pile of updates to Princeton. They will probably be added to the site on the 2nd.

The index page has been re-written to include pointers to some of the major sources used for the material on the site.

An Intermittent Problems page has been added to describe how to deal with intermittent problems.

The mdb, dtrace and Disk I/O pages have been rewritten and expanded. The adb and mdb pages were merged to reflect the fact that Solaris 7 is really a dead OS at this point in time. The Disk I/O page was updated to reflect current Solaris 10 information from Solaris Internals and Solaris Performance and Tools by McDougall, Mauro and Gregg, and especially to include pointers to the really cool tools on the DTrace Toolkit page.

The kstat page has been updated to provide some additional information, and the netstat page has been changed to reflect the death of netstat -k.

The next major effort for the site will be an expansion of the zones page. (The current page is really not much more than a placeholder to avoid dead links on the other pages that refer to zones.)

I am also working on a root cause analysis page. I am finding that this page is involving a lot of reading of business publications; the business community seems to be way ahead of us on thinking about this issue.


Tuesday, December 26, 2006

mdb and kmdb pages

I've submitted the following new pages to Princeton for inclusion: Intermittent Problems, mdb and kmdb. I also made significant improvements to the dtrace page.

Thursday, December 21, 2006

dtrace, methodology, SMF

I've submitted pages on
general methodology, dtrace and SMF. Depending on Princeton's work schedule, they may not be up until after the holidays.

Monday, December 18, 2006

SysAdmin article

An expanded and rewritten version of the Resource Management page has been tentatively accepted by SysAdmin as for its April 2007 issue.

Updated pages

I've submitted some updated pages for Resource Management, ZFS and Scheduling.

I also added a beginning of a page on Zones.


Thursday, December 07, 2006

ZFS and Resource Pools

Additional pages for ZFS and Resource Pools have been submitted. The scheduler page has been expanded.

Sources for the ZFS page include the following:

Solaris ZFS Administration Guide

Brune, Corey, ZFS Administration, SysAdmin Magazine Jan 2007

Tuesday, December 05, 2006

Sunday, December 03, 2006

Ishikawa and Interrelationship Diagrams

I've been working on a page including information on some formal troubleshooting methods. En route, I have been looking at Cause-and-Effect (Ishikawa fishbone) diagrams and Interrelationship Diagrams.

Here are some of the noteworthy web pages I've been looking at:

Concordia: Cause and Effect Diagram and
Concordia Interrelationship Diagram provide a nice introduction to the two types of diagrams.

HCI Cause and Effect Diagram provides a slightly longer article, including some historical informaton about Ishikawa diagrams. Cause and Effect Diagram provides a much more in-depth view of Ishikawa diagrams. Interrelationship Diagrams
provides a howto level article about Interrelationship diagrams.

ASQ Interrelationship Diagrams
provides a slightly longer article about Interrelationship Diagrams.

Root Cause Analysis: A Framework for Tool Selection
provides a nice comparison of Ishikawa and Interrelationship diagrams, as well as Current Reality diagrams.