Category Archives: Uncategorized

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Benchmarking InnoDB page compression performance

InnoDB page compression is a feature that really interests me. I wrote this about it recently when describing how to improve the performance of large tables in MySQL:

“Use innodb page compression. For some workloads (particularly those with lots of char/varchar/text data types) compression will allow the data to be more compact, stretching out that performance curve for longer. It may also allow you to more easily justify SSDs which are typically smaller in capacity. InnoDB page compression was improved a lot in MySQL 5.6, courtesy of Facebook providing a series of patches.”

Continue reading Benchmarking InnoDB page compression performance

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Securing Your (Mobile) Email: Thunderbird, GnuPG, Enigmail, AGP, Gmail and K9mail

While teaching my CISSP students the other day, we got to talking about cryptography. This lead to a discussion about implementing PGP on your personal email and how you could accomplish this.

In the past, I have used Thunderbird and the Enigmail plugin to help implement PGP on my personal email and, through this discussion with my students, I realized I’d dropped the capability almost as quick as I’d picked it up. Continue reading Securing Your (Mobile) Email: Thunderbird, GnuPG, Enigmail, AGP, Gmail and K9mail

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Fixing mouse button/wheel from unintended double clicking

I am currently using a cyborg R.A.T. 7 on my desktop which, after less than a year, has started exhibiting signs of wear. This is evident from the fact that a simple click of the wheel will at around 60% of the time send a double click instead. This is due to the membranes (ie: the switches) wearing away causing it to be faulty. Naturally, this is driving me completely nuts since opening a hyperlink using the mouse wheel will, most likely, open the hyperlink twice. Continue reading Fixing mouse button/wheel from unintended double clicking

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123Net is rolling to South Africa

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123NET fibre comes with a connection that’s up to 500 times faster than today’s basic broadband speeds in South Africa. Lightning downloads. Amazing TV experience. Unlimited. Can you hold it? Prepare to be Gigabitized!

Great speeds and great prices for FTTH.

Here is the site – 123NET Continue reading 123Net is rolling to South Africa

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Send mail from a different address or alias

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Gmail lets you send messages with another of your email addresses listed as the sender instead of your Gmail address. This feature helps you manage multiple accounts from the Gmail interface; it works only if you already own the email account linked to the alternate address. To send mail from a different Gmail username, you’ll first need to sign up for that address. Select an option below for instructions on how to add your other addresses to your Gmail account. Continue reading Send mail from a different address or alias

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dd: the ultimate disk cloning tool

I recently had to clone a hard disk so I naturally turned to solutions such as Acronis True Image, but I discovered these did not work (the start-up disk claimed the clong was ‘complete’ when it blatantly wasn’t) and I also tried copying the partition using gParted in Ubuntu but this froze at about 3%, due to corrupt data, which seemed not to be caught in a chkdsk.

Continue reading dd: the ultimate disk cloning tool

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Hidden Google Tricks, Tips and Features

There might have been raised a lot of questions regarding Google’s privacy policy and what not, but Google is still awesome as it is. Today, I will tell you about a few Google tricks and features that you probably didn’t know existed (so, most common google tricks and tips that everyone knows will not feature in the article). Continue reading Hidden Google Tricks, Tips and Features

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