I have posted a lot of material to my website over the past few years, and needed a way to easily locate content. To make finding material super easy, I recently added a global search page. I’m not sure if folks will find this useful, but I thought I would throw it out there in [...]
I have been experimenting with lxc-containers, which use a number of features in the latest 2.6 kernels (specifically, namespaces). To ensure that I have the latest bug fixes and performance enhancements, I have been rolling my own kernels. This has been remarkably easy, since the Makefile that ships with the kernel has an option to [...]
While perusing the Linux change list, I noticed that boot tracing was introduced in the 2.6.28 kernel: “The purpose of this tracer is to helps developers to optimize boot times: it records the timings of the initcalls. Its aim is to be parsed by the scripts/bootgraph.pl tool to produce graphics about boot inefficiencies, giving a [...]
Slashdot picked up a youtube video of Brendan Gregg, shouting at a Sun 7410. Its pretty halarious, but it does showcase just how cool the DTrace Analytics visual GUI is on Sun’s new line of Amber Road products. Brendan is one of the co-authors of Solaris Internals, 2nd Edition. He also wrote the DTraceToolKit, which [...]
It has been a long time coming, but it looks like the network team finally integrated project crossbow (network virtualization) into Nevada build 105: Comments: PSARC/2006/357 Crossbow – Network Virtualization and Resource Management 6498311 Crossbow – Network Virtualization and Resource Management 6402493 DLPI provider loopback behavior should be improved 6453165 move mac capabs definitions outside [...]
One thing that I have always enjoyed about Linux is the ability to snoop traffic on loopback interfaces. This is extremely useful for debugging local communication problems, and the fact that you couldn’t until recently do this on Solaris hosts was extremely annoying(especially in the world of zones!). I just read Peter Memishian’s blog entry [...]
