Friday, May 21, 2010

Busy time for 2.6.32 kernel on Power7

As things move forward with the launches of IBM's POWER7 systems this year, there's a flurry of activities on many fronts. In particular, we've been pretty busy with the 2.6.32 kernel in many places. Red Hat has a new RHEL Version 6 in beta, the BlueBioU project of course is using 2.6.32, and Novell has announced the latest service pack for SLES 11 which is based on 2.6.32.

Red Hat's RHEL 6 is already in beta (from last month):

* http://press.redhat.com/2010/04/21/red-hat-enterprise-linux-6-beta-available-today-for-public-download/

Novell just announced their latest service pack for SLES 11 which among other things upgrades the kernel to 2.6.32:

* http://www.novell.com/promo/suse/sle11sp1.html

A key proof point at BlueBioU continues to be worked on collaboratively across many teams. Being based on the 2.6.32 enables the easy availability of a number of latest Linux technologies.

* http://bluebiou.rice.edu/

For some example performance FAQs emerging with the work on the 2.6.32 kernel base, check out:

* http://www.ibm.com/developerworks/wikis/display/LinuxP/Performance+FAQs

To check on current questions being posed see the Linux on Power architecture forum at:

* http://www.ibm.com/developerworks/forums/forum.jspa?forumID=375

Some recent questions address the holes in CPU numbering on POWER7 when SMT=2 or SMT=1 is used, how to control the DSCR settings with the ppc64_cpu command, various tools questions, how to dynamically control the SMT settings on a system, page sizes on Linux, etc. Some of the questions are driving functional updates to the commands or approaches in development, so asking a leading question there is always a good thing.
One of many bloggers.

Bill Buros

Bill leads an IBM Linux performance team in Austin Tx (the only place really to live in Texas). The team is focused on IBM's Power offerings (old, new, and future) working with IBM's Linux Technology Center (the LTC). While the focus is primarily on Power systems, the team also analyzes and improves overall Linux performance for IBM's xSeries products (both Intel and AMD) , driving performance improvements which are both common for Linux and occasionally unique to the hardware offerings.

Performance analysis techniques, tools, and approaches are nicely common across Linux. Having worked for years in performance, there are still daily reminders of how much there is to learn in this space, so in many ways this blog is simply another vehicle in the continuing journey to becoming a more experienced "performance professional". One of several journeys in life.

The Usual Notice

The postings on this site are my own and don't necessarily represent IBM's positions, strategies, or opinions, try as I might to influence them.