I’ve written previously about random numbers in virtual machines. KVM still remains the only hypervisor to offer an RNG device to guests.
Quite a lot of exciting changes have landed in the upstream Linux kernel since that last post. I have written an article in the RHEL blog about it: Red Hat Enterprise Linux Virtual Machines: Access to Random Numbers Made Easy.
That articles talks about the improvements in the recent RHEL 7.1 release. In upstream terms, all the changes written about have landed in kernel 3.17; so Fedora 21 out-of-the-box, and Fedora 20 after updates, have benefited from the additions.
All the benefits listed in the article apply to all Linux guest VMs running under KVM if they have the virtio-rng device enabled, and run kernel 3.17+ in the guest.
My article on FUDCon Pune 2011 appeared on opensource.com last week:
Apparently my initial submission was about 3x longer than the average article on opensource.com. I’ve covered events running up to the conference on this blog, and with the osdc article, I’ve covered the conf as well. There still might be a few things left which I’ll post about here in the coming days.
I wrote an article on mind maps in the BenefIT magazine for the March 2011 issue. The people at BenefIT are nice enough to license the content under a CC license, so I can host the pdf and point you to it:
This article talks about how mind maps are beneficial for the thought process and how you can use them to make decisions.
This is my second article that got published in the BenefIT magazine. I’ve written one on taking frequent breaks from the computer earlier. Writing for non-tech, business-oriented people is different, and not very straightforward :-)
Most of us lead sedentary lifestyles these days — most of our time is spent in front of computers. This slowly is causing a lot of problems people from previous generations haven’t experienced: back aches, knee problems, wrist pains, myopia, among others. And just going to a gym or putting in one hour of physical activity a day isn’t enough. It doesn’t help balance the inactivity over the entire day.
I’ve tried both the software but have been using Workrave for quite a while now and am quite happy with it. To briefly introduce them: both software prompt the user to take a break at regular intervals. They have timers that trigger at configured intervals asking the user to take a break. Workrave also has some stretching exercises suggested that can be performed in the longer breaks. The shorter (and more frequent) breaks can be used to take the eyes off the monitor and to relax them. Read the article for more details.
I’ve reviewed Workrave version 0.9.1 in the article, though the current version as of now is 0.9.3, which has a few differences from those mentioned in the article. The prime difference is the addition of a ‘Natural Rest Break’ that gets triggered when the screen-saver gets activated, which is nice since if the user walks away from the computer for a prolonged period of time, the rest break in effect has been taken, and the next one is scheduled after the configured duration once the screen-saver is unlocked.
Both software are available in the Fedora repository: Workrave is based on the GTK toolkit (and integrates nicely with the GNOME desktop), whereas RSIBreak is based on the Qt toolkit (and integrates nicely with the KDE desktop). Give these software a try for a cheap but effective way of staying healthy!
A few volunteers from India associated with the Fedora Project wrote articles for Linux For You‘s March 2010 Virtualisation Special. Those articles, and a few others, are put up on the Fedora wiki space at Magazine Articles on Virtualization. Thanks to LFY for letting us upload the pdfs!
We’re always looking for more content, in the form of how-tos, articles, experiences, tips, etc., so feel free to upload content to the wiki or blog about it.
We also have contact with some magazine publishers so if you’re interested in writing for online or print magazines, let the marketing folks know!