Tips

Self-notes...after spending a few hours researching and benchmarking various configurations. Apache is so old news.

Setup:

• Ubuntu Lucid Lynx (10.04)
• nginx as frontend webserver
• Drupal served using fastcgi to phpcgi
• ...and Drupal's Boost module.

Most of these configs is gathered from http://groups.drupal.org/node/26363.

How fast is it now? How about almost 6,000 requests/sec, with throughput around 240Mbps? Fast enough?

Encountered this error when I tried to upload a large file. nginx default is too small. To upload bigger file, add this line in /etc/nginx/nginx.conf, somewhere inside the http section:

http {
    ....
    client_max_body_size 20M;
    ....
}

Save, and then restart your nginx instance.

Self notes since I kept on jailbreaking my iPhone and reflashing my HTC Desire, and always forgot these settings:

• APN: celcom3g
• MMSC: http://mms.celcom.net.my
• MMS Proxy: 10.128.1.242
• MMS Port: 8080

Easy. Just follow these steps:

1. Obviously you need another Mac to which you want to backup to, with the disk formatted as Mac OS Extended Journaled.
2. Open Terminal from Mac you want to backup from. Issue command

 sudo defaults write com.apple.systempreferences TMShowUnsupportedNetworkVolumes 1

3. Open System Preferences → Time Machine. Click Change Disk. Your network disk should appear now.
4. Select it, and you are good to go.

List of reliable RBL that we use internally and recommend to our customers.

Here goes:

• zen.spamhaus.org
• bl.spamcop.net
• combined.njabl.org
• cbl.abuseat.org
• combined.rbl.msrbl.net
• psbl.surriel.com
• b.barracudacentral.org

With these RBL, combined with greylisting and a good SpamAssassin ruleset, out of combined 50,000 - 55,000 incoming email attempts daily on all SMTP servers that we monitor, only 0.05% of spam managed pass through. Pretty good!

My Mac have 4-core 3.0 GHz CPU with 4 GB RAM, yet this past week or so it seems to slow down to a crawl. Switching applications become sluggish, Dashboard taking its own sweet time to appear, and the CPU meter is constantly showing 100% usage in two of the core.

Tested under: CentOS 5.2, Ubuntu Intrepid Ibex (8.10), Ubuntu Hardy Heron (8.04), both 32-bit and 64-bit flavors. 

Tested working with the following clients: Windows XP, Windows Vista, iPhone, Mac OS X Leopard.

I'm running Ubuntu 7.10 using custom 2.6.23.11 kernel. Somehow, starting from kernel 2.6.23, VMware was unable to properly use my Windows Mobile PDA (Atom O2 Life). Every time I plugged in the Atom, VMware will spurt out "VMware Workstation was unable to claim the device" message. The issue was actually with VMware, and not the kernel. Follow the steps outlined below to work around this bug in VMware.

Linux: Guide on configuring Nokia phone as GPRS / 3G / EDGE / HSDPA modem

NOTE: Some parts of this tutorial is probably outdated.

1. Download and install the latest version of imapsync at http://www.linux-france.org/prj/imapsync/dist/. As of today, the latest version is 1.255.