AIXpert Blog is about the AIX operating system from IBM running on POWER based machines called Power Systems and software related to it like IBM Systems Director, PowerVM for virtualisation and PowerSC for security plus performance monitoring and nmon
Just a quick look at the features for AIX7 - which is coming soon. Take a look at AIX7 Preview for an official statement. The two major items for me are 1) Scaling to 256 cores (or CPUs as I have called them for 25 years) Power systems always had lower CPU counts than the competition particularly in the high end machines due to the faster speed of the processor and this benefits batch (single threaded) work, software costs (lower CPU numbers) and is easier for scaling up but now a truly massive POWER7 machine is near and AIX7 is the OS to run... [More]
The AIX 7 Open Beta is available now - this gives you access to the version to be released later this year. Find the summary in a earlier AIXpert blog and then the details at the new AIX7 Open Beta website. I have downloaded the image at just 2.4 GB (watch out for your 1GB default ulimit) for the entire AIX OS and have it running fine. I installed via my VIOS based virtual optical drive. Also included are access to new compilers versions, the AIX7 documentation and support via a Forum.
I was asked at the Technical University: How can we tell (in a script) if we are running in a WPAR or a regular AIX? We also called it the Global AIX, if its running WPARs. It took me a good few minutes to find out how to do it and thought I would shared it to save you time: Use: uname -W It returns 0 for the Global AIX and a regular AIX or if it is in a WPAR it returns the WPAR Number (i.e. non-zero) Below we show how to use this in a script. wparno=`uname -W` if (( $wparno == "0" )) then echo Global AIX else echo... [More]
Active Memory Expansion (AME) can second in my Top Ten Technologies to be business as usual in the next few years from hundreds of votes world wide. It is available on Power7 machines with AIX 6.1 TL4 SP2 onwards and AIX 7, of course. This allows memory to look at lot bigger than it actually is - to allow more LPARs to be running on a machine or giving headroom for boosts performance. The usefulness of AME is all down to the Expansions Factor (EF) - which is based on the compression ratio achieved for memory pages. If the EF very low then you... [More]
You are invited to a special webcast aboutIBM System p™ servers for UNIX® andLinux® operating systems. Hear about new features designed to better manage energy costs, reducesystem downtime and automatically balance workload across servers. You’ll alsohave an opportunity to ask questions. This complimentary event features speakers including:* Bill Zeitler , Senior Vice President and Group Executive, IBM Systems and Technology Group* Ross Mauri, General Manager, IBM System p* Pat McConnell, Vice President, IBM System p Sales, Americas* Scott... [More]
In case, you did not notice (as its the silly summer season) AIX 7 is shipping in 19 days time. See the official AIX 7 Announcement Letter for all the details This is a whole 2 months early - well done guys.
LPARmon Version 2 is now available from IBM Alphaworks. This free tool provides a graphical interface for viewing partition performance. The tool was developed by Austin's Briefing Center to demonstrate Advanced Virtual Partitioning, in particular to demonstrate free pool utilization in a micropartitioned server. I highly recommend it. http://www.alphaworks.ibm.com/tech/lparmon?open&S_TACT=106AH62W&S_CMP=NEWS
It has been a busy fortnight and I just realised I have micro-blogged (Twitter) comments and link but neglected this AIXpert Blog - sorry about that. Here is a summary and a lot more thoughts that Twitter allows. I actually like the discipline of the Twitter 140 characters as if forces you to get to the point!
Firefox First, I have upgraded to Firefox 10 Enterprise from 3.6 - I was having multiple problems with the older release that had previously seemed to be the only safe one for using both HMC and IBM Systems Director. In particular,... [More]
Warning: touchy feely comment coming up! I have always found it odd that IBM markets the Hardware = POWER7 a lot and very little marketing on the Operating System = AIX7. Personally, I have more good feelings and positive vibes for AIX operating system
because I log in to every day and use it for hours than I do for the
POWER hardware running it. I very rarely go to the machine room and hug the machine! Does anyone else feel this way or am I sadly alone? Put
it another way would you spend two Dollar Euro Pounds (all increasingly
Steve Pittman has posted his AIX 5.3 "best practices" on the following wiki's. AIX Wiki home: http://www-941.haw.ibm.com/collaboration/wiki/display/WikiPtype/Home System Admin Best Practices1: http://www-941.haw.ibm.com/collaboration/wiki/display/WikiPtype/AIXV53AdminBestPractice System Admin Best Practices2: http://www-941.haw.ibm.com/collaboration/wiki/display/WikiPtype/AIXV53AdminBPFiles Installation Best Practices: http://www-941.haw.ibm.com/collaboration/wiki/display/WikiPtype/Installation Software Maintenance Best Practices:... [More]
Yes, I admit it I am a "hacker" in the old sense of the word i.e. Definition 4 = A person who is good at programming quickly.See Hackers Dictionary below. I was think that there are certain books every one in the computer industry should have read before they can claim any level of computer expertise. If you have not read them don't tell any one and quickly get yourself a copy and read it quickly. Thumbnails are borrowed from Amazon - thanks guys and good to see all these important books are still available. My five top books all... [More]
Setting the title on a running aixterm To set the title of your current aixterm window you can use the echo command to output an Escape, left square bracket, number 2, semicolon, the text for the window, and the octal 007. For example to set the title to AIXTERM Title use: echo "\033]2;AIXTERM Title" To set the title for the icon window replace the number '2' with the number '1' as shown here: echo "\033]1;ICON Title" To set the title for both the window and the icon use the number 0 instead of 1 or 2 echo "\033]0;Title and ICON Title" Of... [More]
If you are migrating work from an older POWER5 or POWER6 machine/LPAR to POWER7 ... don't forget to check that those Java versions are compatible with POWER7 or you may hit "unexpected Java errors" The approved Java SDK on POWER7 are limited to particular versions with specific fixes . They can be found here: http://www.ibm.com/developerworks/java/jdk/power7/index.html Harder to check are the Java versions which are embedded in applications. Here are two important ones for IBM software: There is a technical bulletin regarding... [More]
Here are several URL's for Open Source Tools for AIX. The "IBM AIX Toolbox" has the most tools, but not necessarily the most current versions. The most current version are on the "AIX Open Source" and "Hudson Valley CC" URLs. IBM AIX Toolbox for Linux Applications - http://www.ibm.com/servers/aix/products/aixos/linux/download.html AIX Open Source - http://www.perzl.org Hudson Valley CC - http://pware.hvcc.edu (Includes AMP, gcc 4.2., samba under "bundles" directory ) Bull Open Software archive for AIX - http://www.bullfreeware.com Bull... [More]
Configuring MPIO for the Virtual Client , describes how to set up Multi-Path I/O boot disks for AIX clients of the virtual I/O server. There some considerations for booting off the SAN. The "pro's" include: IBM supported configuration Flexibility The "con's" include: If the SAN fails Can not capture an AIX dump file (Consider putting dump space on an internal disk) Lose the ability to diagnose the failure from the server side. Updating MPIO on the AIX client may be disruptive (depends on MPIO vendor/version) "Momentary SAN stalls" can cause... [More]