I checked that ZFS compression improves the IO perf when copying a large file and I now want to measure the impact on power consumption
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A big thank you to everyone who attended the Java Professional Day in Langen. Here's my JavaFX material as promised:
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I did a quick check about what ZFS compression brings in terms of IO performance and I also measured the impact on power consumption - a good opportunity to familiarize with the OpenSolaris Power Management. This article describes my experiment and provides the results.
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Take advantage of some free technical Webinars conducted by Sun's experts.[Read More]
Jeff Victor has published zonestat as an OpenSolaris.org project. It's allows to monitor resources at a zone level including limits (caps). zonestat is a very useful utility for users who deal with zone based virtualisation. Details are covered in the Solaris Performance Primer,
[Read More]As posted before: perfbar 1.2 is now final. Read the previous entry to get perfbar 1.2. Key features:
- layout optimized for CMT servers
- more command options
- improved rendering performance
- Available for Sparc and x86 with Solaris
Installing the AMP stack on Solaris is a piece of cake. Following this step by step description to get your AMP stack running in 5 minutes.[Read More]
Perfbar 1.2 is a very valuable visual tool which allows to detect bottle necks on massive parallel SMP servers like the T5000 class of servers.[Read More]
The new ZFS write throttle
feature, which integrated in Nevada build 87, specifically addresses
write intensive workloads. Today, we take a closer look at the write
throttle in action...[Read More]
Become a professional presenter using StarOffice 9 and the Sun Presenter Console. Available for Windows, MacOS, Linux and Solaris for free![Read More]
Optimizing application performance is a multi-facet undertaking. Among
all the tools and methods available to us, getting a glimpse at
performance metrics from the processor point of view allows us to
highlight yet another facet of the application. Most modern
microprocessors include so-called performance counters that provide
event based drill-down of the processor utilisation and efficiency...[Read More]
The second chapter of the hands on ZFS tutorial will introduce RAIDZ2, disk scrubbing and resilvering with help of 6 USB memory sticks and a USB hub.[Read More]
Wang Yu from Sun ISV-Engineering published a great article named "Scaling your Java EE Application" which explains the fundamentals to create scaling Web applications with Java. The article describes the fundamentals which need to be applied after scalability bottle necks have been identified with jstack or the more comfortable Netbeans profiler. An excellent reading for everyone who wants to make a web application ready for the next generation of Chip-Multi-Threading (CMT) systems like the T2.
The article nicely complements the performance oriented work of ISV-Engineering which helps identifying and removing bottle necks on the system side. Wang Yu's article explains how to scale the application once the system bottle necks have been removed.
The second part of the ZFS hands on tutorial shows how to build mirrors and spare disks with the help of 6 USB sticks and a hub. It'll allow to test failure and recovery procedures with least cost components.[Read More]
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