Sunday November 08, 2009
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]
Friday October 02, 2009
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
Friday September 25, 2009
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
Wednesday July 01, 2009
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
Monday May 11, 2009
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
Sunday February 22, 2009
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
Monday February 16, 2009
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
Friday October 17, 2008
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
Friday September 19, 2008
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
Sunday June 15, 2008
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
Monday June 02, 2008
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
Wednesday May 28, 2008
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
Monday April 07, 2008
Don't Keep Your Users Hostage!
Years ago I was taught a formative lesson from response time pioneer Walter Doherty. I asked a (slightly silly) question, and was taught the importance of focussing on service levels. See what I learned here.[Read More]Posted by jsavit [Sun] ( April 07, 2008 05:40 PM ) Permalink
Monday March 03, 2008
The Ten Percent Solution
How do you make a slow, expensive platform look like it's competitive? This is the problem facing IBM with the announcement of their new System z10 mainframe. Read this article to see through deceptive benchmarketing[Read More]Posted by jsavit [Sun] ( March 03, 2008 09:00 PM ) Permalink | Comments[18]
As I was saying
As I was saying[Read More]Posted by jsavit [Sun] ( March 03, 2008 06:39 PM ) Permalink | Comments[0]