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Servers & Storage Feed

Sun Servers and Storage, Solaris, Oracle Linux, Red Hat Linux, Oracle VM for x86, Oracle VDI and Virtualization resources, news, and support articles.

Tuning the OpenZFS write throttle

In previous posts I discussed the problems with the legacy ZFS write throttle that cause degraded performance and wildly variable latencies.

OPW: The Xen Project Developer Summit

This is a repost from Arianna’s blog, which contains a lot of in-depth technical articles related to the Xen Project.

Python – remove newline from readlines

 
readlines() is a function in python used to read text file and convert it into list where each line in at file is a element in list with new line(\n) at the end of each element.
Example:
>>> filelist = open("file.txt").readlines()
['a\n', 'b\n', 'c\n', 'd\n']
If you want to remove new line(\n) at the end of all elements in list use read() and splitlines() functions as shown in below example.

Best Practices for Oracle Solaris Network Performance with Oracle VM Server for SPARC

A new document has been published on OTN: "How to Get the Best Performance from Oracle VM Server for SPARC"
by Jon Anderson, Pradhap Devarajan, Darrin Johnson, Narayana Janga, Raghuram Kothakota, Justin Hatch, Ravi Nallan, and Jeff Savit.

Install the high performance Nginx web server on Ubuntu

http://www.techrepublic.com/blog/linux-and-open-source/install-the-high-performance-nginx-web-server-on-ubuntu/

Nginx and Android: A great on-the-go web dev tool

http://www.techrepublic.com/article/nginx-and-android-a-great-on-the-go-web-dev-tool/?tag=nl.e101&s_cid=e101&ttag=e101&ftag=TRE684d531

Building a firewall for a Debian web server

This post addresses how to configure the Linux firewall to protect a Debian-based web application server. While there are GUI tools for the job, we will focus on the command-line tool iptables. The scenario is that you have just installed Debian (or Ubuntu) on a server connected to the Internet. This will be used as a web server hosting your WordPress blog. I assume that you already have Apache, and WordPress installed.

Python – check if string starts with number

With the help of isdigit() function we can check if a string start with number or not.
Lets check with following examples:
>>> input = '1viewsby'
>>> input[0].isdigit()
True
Above example is returned true since input string is started with with number.
>>> input = 'viewsby'
>>> input[0].isdigit()
False
Since input is is not started with number above example returned false.

Accurately Time Your Parallel Loops in OpenMP

Learn how to use a wall clock timer that is included as part of the OpenMP library. Jeff Cogswell walks you through how. Taken from Accurately Time Your Parallel Loops in OpenMP which is found http://goparallel.sourceforge.net/

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