Let me start by congratulating two well known community members with achieving the VCDX certification. Congrats Jason Boche and Scott Lowe, well done. These two guys just received the news that they passed the final stage and I am already been preparing the upcoming VCDX Defense Panels in Munich. Upcoming week is an exciting one for me personally, shifting jobroles... As of Monday I will be a vCloud Architect for VMware Advanced Services. My focus, in terms of blogging, will remain the same but of course will include more cloud related topics. But enough introduction blabla, let's start digging into the top-5:
Frank Denneman - Impact of host local VM swap on HA and DRS This rule also applies when migrating a VM configured with a host-local VM swap file as the swap file needs to be created on the local VMFS volume of the destination host. Besides creating a new swap file, the swapped out pages must be copied out to the destination host. It’s not uncommon that a VM has pages swapped out, even if there is not memory pressure at that moment. ESX does not proactively return swapped pages back into machine memory. Swapped pages always stays swapped, the VM needs to actively access the page in the swap file to be transferred back to machine memory but this only occurs if the ESX host is not under memory pressure (more than 6% free physical memory).
Jason Boche - My VCDX Defense Experience During the days leading up to my defense, I felt very confident. I had been studying my design and going over all the Enterprise Admin and Design exam study material on a daily basis. I had been brushing up on white papers and blog articles for areas which I felt I was weak on or had forgotten details of. I brought a 3 ring binder filled with about 400 pages of documentation as well as every VI3 published .pdf known to mankind on my thumb drive. While I didn’t read all the .pdf files, they were with me if I needed them for reference. As it turned out, a few of the documents I crammed on the night before my panel would play a nice role during part of my defense.
Scott Sauer - Performance troubleshooting VMware vSphere CPU , Memory Watch pCPU0 on non ESXi hosts. If pCPU0 is consistently saturated, this will negatively impact performance of the overall system. If you are using third party agents, ensure they are functioning properly. A couple of years ago we had issues with HP System Insight management agents (Pegasus process) which was creating a heavy load on our COS. All of the virtual machines looked fine from a performance perspective, but once we dug a little bit deeper, we discovered this was our root cause.
Gabrie van Zanten - Converting vscsiStats data into Excel charts Some time ago I wrote a posting on how to use vscsiStats to gather even more data from your VMs and their SCSI performance ( See: Using vscsiStats – the full how-to). Last week I received an e-mail from Paul Dunn who had written an Excel macro that can read the output from the vscsiStats exported csv file and convert it into Excel histograms.Using the macro is very straight forward. First you let vscsiStats run for a while and have it export the data to csv file. For example with the following command (Do pay attention to just one capital S in vscsiStats): /usr/lib/vmware/bin/vscsiStats -p all -w id -c > /root/vscsiStats-export.csv
Simon Gallagher - The Computing Super-Powers are Aligning Their Stacks With HP’s recent acquisition on 3Com and their existing HP ProCurve range I would hazard a guess that they will stop selling Cisco blade switches in future – I also note from an email that all HP partners got this week that all Cisco manufactured blade switch components were facing supply issues, stoking the fires somewhat to resellers to push the HP product with some choice anti-Cisco FUD which I won’t repeat here.
26.09.2013 The End of the Google Summer of Code The GSoC coding period has ended last Monday. In this blog post, I will summarize what I have done during the summer, to give a general idea of what you can expect from a future version of Nepomuk, if my work is accepted by the Nepomuk maintainers. The source code of the first two projects is available in the steckdenis-gsoc2013 branches of the nepomuk-core and nepomuk-widgets Git repositories. The browser plugin can be found in the scratch/dsteckelmacher/nepomukintegration.git scratch repository. The Nepomuk Query Parser The first part of my GSoC project was to implement a new ...02.04.2009 Milian Wolff (milianw): KDevelop Hack Sprint Huzza! The KDevelop Hack Sprint 09 is now official. Thanks to the huge engagement of Alexander Dymo we will meet from the 19th to 26th April 2009. The meeting will take place at Alexander’s university, the national university of shipbuilding in Odessa, Ukraine. Thanks to the people there responsible for making this sprint possible by providing us with the premises, internet, power etc. Since this is my very first Hack Sprint and considering that I only recently started contributing to KDE in general and KDevelop in particular I am very excited. The topics I will plan to hack on include (...14.07.2010 Mario Fux (unormal): KDE work day 1 - xml and nepomuk I’m sitting in the train from Zurich to Burgdorf (Switzerland) and want to report, dear reader, about my first week of KDE (or atm qt) development. It was not really as I planned it, I did not work a whole day on qt and kde, but several hours during the week. As I told you last week my first week was about an xml indenter. Some years ago when I started to track routes for OpenStreetMap.org my Garmin GPS device spat out bad formatted xml (GPX) files. Bad means here that all of the content was on one line and as I sometimes wanted to extract single tracks me and the dear editor (Kwrite or ...15.01.2009 Aaron Seigo (aseigo): building a community around your F/OSS project Today has turned into another writing day for me. Huzzah! I started going through my list of blog-posts-I've-not-yet-written and decided to punctuate the day with a couple of them. So let's talk a bit about building a community around your F/OSS project.Usual disclaimers apply: this is what works for me, it may not work for you; I could be completely insane and talking about my posterior; I probably am just repeating what other people have said elsewhere; I'm going to be hypocritical in places by giving advice that I don't follow overly well myself. So there.Onwards!Why It MattersIt is not unc...27.01.2010 Troy Unrau: Camp KDE coverage summary Hi guys, I was preparing this summary of blogs and other coverage of Camp KDE to forward to our sponsors to show the activity occurring at the event. I figured I'd share it with the planet, if you folks are interested. If blogging is a measure of productivity, we certainly set the bar high. :) Dot.kde.org Posts (during and around the event only):http://dot.kde.org/2010/01/16/camp-kde-about-starthttp://dot.kde.org/2010/01/17/day-one-camp-kde-2010http://dot.kde.org/2010/01/21/camp-kde-2010-continues-more-talkshttp://dot.kde.org/2010/01/21/camp-kde-day-three-technical-talks-summarieshttp://dot.kd...16.02.2010 Aurelien Gateau: A week in Portland, Oregon I spent the first week of February in Portland, where I attended Canonical Platform Sprint for Ubuntu Lucid. We got some good work done on the DBusMenu front. You can read about it on Jono and Jorge blog posts. 18.05.2008 Michael Pyne (mpyne): Usability in interfaces So on an article on a programming weblog. The topic of the article was a group that decided to make a copy of Funpidgin and was essentially created because the people making the copy feel the Pidgin development team are not listening to the needs of their users. Celeste Lyn Paul, one of the KDE team’s usability designers (the group that tries to make the software we make actually usable by the end user) a comment about the amount of issues that people bring in the name of usability. He then later posted a S5W nuclear reactor plant. This plant was very old by the time I qualified on it (M...01.03.2008 Niels van Mourik (nielsvm): Re-entering the blogosphere Hello there blogosphere, It has been almost one year ago the last time I wrote a entry in this dusty blog. And since then, a lot of things changed in my life and on the web. And one of those is that I got a new, and my first serious job back in June last year. So, back in June ‘07 I started working at the funny called company FOSDEM took place at the free university of Brussels, Belgium. After some bad experiences with hostels the previous years I subscribed to the organised KDE accomodation by Lydia Pintscher (Quassel). Before the event started the FOSDEM people organised the ‘Fri...08.05.2010 Ronny Yabar (ronnyml): First steps with Grantlee and my KDE PIM GSoC project Well, coding officially starts on May 24, now is time supposed to read documentation, know your mentor(s) and discuss the project ideas, needs, requirements, difficulties, etc. but as many other GSoCers I couldn’t resist to code something. My goal for the last week was to write a very simple Qt application showing the power of Grantlee. The idea was to simulate that I am reading a message in Kmail and I want to change the theme again and again. You can take a look at the code in the soc-pim branch or: svn co svn://anonsvn.kde.org/home/kde/branches/work/soc-pim/kdepim/examples/mail_grantl...05.03.2008 Mike Arthur (mikearthur): Where is the love? I realise I’m probably going to get lynched for this but I think it needs to be said. If you, as a KDE developer, get annoyed with a KDE feature you didn’t write and feel like blogging about your bad interaction with a part of KDE or a spat with another KDE developer then please don’t. You have every right to do so but it isn’t good for you, it isn’t good for the other developer and it is really bad for KDE. The problem with a community like KDE doing the majority of their work online is that sometimes we forget basic social rules of interaction. If your blog is o...