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Showing posts from September, 2012

Using IOMeter

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Excerpted from http://4sysops.com/archives/iometer-measure-disk-performance/The IOMeter tool can be used to test disk performance, IO transfer rate and IO response time. I used it to pump some traffic (read, write or both) in the network and measure the performance of the ports utilized and trigger threshold crossing events.Some important points about using this tool are mentioned below:1. Run this tool as an administrator user.2. Select the disk targets which are generally in my case remote SAN/LAN disks presented to the host or VM on the hypervisor. You should specify the number of sectors Iometer can use for the performance test otherwise it will use all available disk space and if the disk is huge then the tool just appears to have stuck in “preparing disk”. So set the “Maximum Disk Size” to 1000 sectors as shown below.3. You should configure the “Access Specifications”. Any pre-configured specification (like “512B; 100% Read; 0% random”) can be used for basic traffic related test…

A simple chrome web app

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To create a chrome web app follow the below steps:1. Create a new folder.2. Have an icon from findicons.com and save the icon (PNG format one in the above folder).3. Create a new text file and copy paste the below (the below sample creates a chrome web app to launch this blog):{
"name": "Watsh's Blog",
"version": "1.0",
"manifest_version": 2,
"description": "Launcher for Watsh Rajneesh's blog",
"icons": { "128": "gnome_blog.png" },
"app": {
"urls": [
"http://rwatsh.blogspot.com"
],
"launch": {
"web_url": "http://rwatsh.blogspot.com"
}
}
}


The highlighted parts above can be changed to create your own chrome web app.

4. Save the above file with the name “manifest.json” in the same folder we created above. The complete manifest file info is found here.

5. Now to install it in chrome browser, select the settings icon “wrench” on the top rig…