Dedicated CPUs in zones - a small RM exercise

An exercise with resource management using Logical Domains and Solaris Containers, illustrating how these technologies interact, and how resource management looks when dedicated CPUs are used with Containers. [Read More]

Posted by jsavit [Sun] ( November 08, 2009 04:47 PM ) Permalink | Comments[0]

Hercules goes commercial!

The Hercules open-source mainframe emulator had lead to a commercial mainframe offering? What does this mean - can it be successful?[Read More]

Posted by jsavit [Sun] ( October 02, 2009 03:31 PM ) Permalink

ZFS, Live Upgrade and Flash Archive - happy together at last

Flash Archive is a really handy Solaris feature for cloning Solaris systems. Unfortunately, until recently it didn't work with Solaris 10 systems that leveraged ZFS boot - but now it's available. Here's my experience making use of this.[Read More]

Posted by jsavit [Sun] ( September 25, 2009 06:58 PM ) Permalink

It's a dry heat...

Jeff made a big move from the east coast to the Southwest, and has gone through his first summer in the desert. You can take the boy out of Brooklyn, but can you take the Brooklyn out of the boy?[Read More]

Posted by jsavit [Personal] ( August 30, 2009 07:40 PM ) Permalink

Virtual SMP in VirtualBox 3.0

VirtualBox 3.0 introduces support for multiprocessor virtual machines. This is an exciting development! Some thoughts on when to apply this, and recommendations for how to use it with optimal performance.[Read More]

Posted by jsavit [Sun] ( July 01, 2009 11:01 AM ) Permalink

Sherlock Holmes and The Adventure of the Odd Permissions

A mystery in which a user can create directories and files on ZFS, but cannot remove them! [Read More]

Posted by jsavit [Sun] ( May 11, 2009 10:08 AM ) Permalink

"Pointed comments" on a completely different topic.

Today I'm making "pointed comments" - with real points and edges! - on a completely different topic, with a reflection on learning new things while retaining old ones.[Read More]

Posted by jsavit [Personal] ( March 29, 2009 06:01 PM ) Permalink

DTrace and the mighty Hercules

DTrace is one of the really powerful features of Solaris, providing fantastic observability into application and system behavior. Here, an example of using DTrace to provide instrumentation data into an emulator program I occasionally use.[Read More]

Posted by jsavit [Sun] ( February 22, 2009 08:02 PM ) Permalink

sirius - OpenSolaris on System z - an update

Work has continued on "sirius" prototype port of OpenSolaris in the last few months. Here's some news on how the project is going, and experiences with the code.[Read More]

Posted by jsavit [Sun] ( February 16, 2009 05:53 PM ) Permalink

OpenSolaris on System z - finally goes public

The initial version of OpenSolaris on z (also called "sirius") is now "out in the open" - there's a bit of buzz about it. I've been involved with this project for several years, and now it's something we can talk about.[Read More]

Posted by jsavit [Sun] ( October 17, 2008 01:37 PM ) Permalink

End of an era

A different topic, for once. This month marks the end of an era, with the passing of financial giants like Merrill Lynch and Lehman Brothers. Some personal thoughts from a Merrill Alumnus[Read More]

Posted by jsavit [Personal] ( September 24, 2008 04:08 PM ) Permalink

Response to Joe Temple's blog on my blog...

IBM made an announcement that made invidious and inaccurate comparisons to our products. I blogged about why it was misleading. Other people blogged about my blog and said things that were even more misleading. Read my response here.[Read More]

Posted by jsavit [Sun] ( September 19, 2008 06:07 PM ) Permalink

No, there isn't a Santa Claus

I really don't like to use this blog for refuting competitor exaggerations and FUD. I'd really rather spend the infrequent time I spend on this blog talking about Sun technology. THere's so much great new stuff in Solaris, in our servers and storage products, and software stack, that it's just a nuisance to have to refute silly attacks on us.

But, once again into the fray. Read on to see the latest fuzzy math[Read More]

Posted by jsavit [Sun] ( June 15, 2008 09:01 AM ) Permalink

Zones in OpenSolaris LiveCD inside VirtualBox under OpenSolaris!

Can you use the OpenSolaris LiveCD to test features like Solaris Containers? Can you do it even when you run it in a virtual machine? Yes, and it's very helpful, so read on...[Read More]

Posted by jsavit [Sun] ( June 02, 2008 10:25 AM ) Permalink

How I found out that I might not exist

Last weekend I got an e-mail from an acquaintance of mine who pointed me to an industry web site where my blog (in particular the mainframe discussion) had been linked - but it said I might be a pseudonym! Read on to see how I got my name back :-) and learned a few things in the bargain.[Read More]

Posted by jsavit [Sun] ( May 28, 2008 02:44 PM ) Permalink