Posts tagged with: dtrace

Links of interest for 5 Nov 2009 - 2 Dec 2009: J is for JVM: Why the ‘J’ in JRuby? | Engine Yard Blog - A good explanation on why the guys behind jRuby like the J, aka Java Virtual Machine, part of JRuby. Interesting performance figures too when compared to the standard Ruby, especially considering people complain Java is slow. Senators press EU to speed its Oracle-Sun probe - I very much doubt this is going to have any effect on the EU regulators. They'll just perform the usual Gallic shrug and ignore the letter. DTrace Cheatsheet : Brendan... Continue reading ►

Links of interest for 15 Mar 2009 - 24 Mar 2009: Internet Archive to unveil massive Wayback Machine data center - Oooo, and it#039;s in a Sun Modular Datacentre (aka Project Blackbox) running Solaris 10 and ZFS. The 'IBM buys Sun' story | Paul Murphy | ZDNet.com - Interesting point of view on what#039;s happening with these rumours. The last paragraph in this article could be the deal breaker though. Heat Map Analytics - Brendan Gregg and Bryan Cantril have far too much free time. The end of this article has a interesting bit about writing a program that generates... Continue reading ►

If you're ever had concerns about the effect of noise on your disk performance, let Brendan Gregg put your mind at rest. Thanks to the brilliant Analytics (aka Dtrace with a brilliant web interface) on the a Sun Storage 7410 we can clearly see noise does have an effect, and in this extreme case (don't try this at home work), quite a large effect: Now that is cool. Lets see NetApp or EMC show us that kind of real time proof. Brendan has a full report and some screenshots of the Analytics output here.

Links of interest for 3 Nov 2008 - 10 Nov 2008: Fishworks: Now it can be told : The Observation Deck - Bryan Cantrill's recount of the road to Fishworks and Amber Road. Fishworks Hardware Topology - Eric Schrock gives an intro to the chassi subsystem at the heart of the technology behind the Sun Storage 7000 series. Hybrid Storage Pools in the 7410 : Adam Leventhal's Weblog - Wow, the Fishworks guys have been busy blogging like crazy. Adam's got a great detailed report on the Hybrid Storage Pools in the biggest of the Sun Storage 7000 server -... Continue reading ►

Links of interest for 3 Sep 2008 - 11 Sep 2008: 10 Principles of the PHP Masters - Some very useful PHP tips here. Some new, some old. Google restores Chrome's shine - That's better. Now you can still keep ownership of everything you already own. Hadoop Live CD at OpenSolaris.org - Distributed computing on a LiveCD. What a great way to test the waters without actually having to install anything. Happy 5th Birthday, DTrace - Wow!!! DTrace is 5 years old already. Wow time flies. Burned by Chrome - All your bases are belong to us. Not the nicest... Continue reading ►

Links of interest for 1 Jul 2008 - 30 Jul 2008: Direct Mounting of Files - As of snv_91, you no longer need lofi to mount a filesystem image, like an ISO. You can now call mount(1M) as you would a normal filesystem. DTrace IP Provider - Cool. The first step of implementing TCP/IP DTrace providers in Solaris has made it's way into snv_93. OpenSolaris 2008.11 - A Preview For The Storage Admin - A great review of the features you can find in OpenSolaris 2008.11 from a Storage perspective, ie the stuff sysadmins want, but the other reviews never... Continue reading ►

OpenSolaris 2008.05, aka "Project Indiana" will be officially released to the world later today (US time), but it's already available now for download from it's dedicated site - www.opensolaris.com. For the uninitiated, I'll quote the OpenSolaris docs... Continue reading ►

Links of interest for 13 Jan 2008 - 27 Jan 2008: Transactional ZFS Upgrades on Nexenta - This is pretty impressive usage of ZFS. Once Solaris officially supports ZFS boot, this is a fantastic feature that could be added to patching and live upgrade. Mystery web infection grows, but cause remains elusive - Pity no one seems to have been able to pin-point an underlying OS for the affected web servers. If something like Solaris, FreeBSD or OS X are involved, DTrace could be used to work out what's going on. Fixing ptrace(pt_deny_attach, ...) on Mac OS X 10.5 Leopard... Continue reading ►

Links of interest for 9 Nov 2007 - 22 Nov 2007: Google as a password cracker - Another good use for Google - password cracking. Ok, it's not true passpord cracking, but rather MD5 hash pattern matching. Cloud Computing Infrastructure for Facebook Developers on Dell Servers. What does it mean? - I'm a very disappointed in Sun here. Joyent are probably the best known OpenSolaris users, and yet Sun couldn't pull finger and treat them with the care they deserve. Come on Jonathan, sort it out. Porting Open Source Java to Leopard - Wow. That didn't take long and is... Continue reading ►

Links of interest for 9 May 2007 - 13 May 2007: About Project Indiana - Oooo, so that's what Project Indiana is all about. Pity we heard about it from the press first. That said, it sounds like Ian's got his head screwed on right and this'll really drive OpenSolaris adoption. Experts scramble to quash IPv6 flaw - Ooops. A slight over sight here. Sun hopes for Linux-like Solaris - Not the most accurate of articles, but it does raise a valid point. DTrace for Ruby is Available - Cool!! I can see Ruby evolving and improving dramatically now. As... Continue reading ►