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A quick point about timing

  • Post author:TerryE
  • Post published:1 February 2012
  • Post category:Blog S/W/Performance/Shared Hosting
  • Post comments:0 Comments

I've just deployed my V3 blog engine to live.  In doing so, the time per query jumped from <10 mSec per query to ~2.5s — which meant that the typical page…

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More on using Rewrite rules in .htaccess files

  • Post author:TerryE
  • Post published:21 November 2011
  • Post category:Performance/Shared Hosting
  • Post comments:0 Comments

This article is a further discussion how to use rewrite rules on a shared hosting service (SHS) such as the one supplied by Webfusion and that I use.  It develops…

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HTTP Caching Revisited

  • Post author:TerryE
  • Post published:29 June 2011
  • Post category:Blog S/W/Performance
  • Post comments:0 Comments

I find the issues around of Web performance very interesting.  I’ve researched pretty comprehensively and written a few articles in this area. I also routinely use various web tools to…

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A good web application spoilt by poor Internet performance

  • Post author:TerryE
  • Post published:11 June 2011
  • Post category:Performance
  • Post comments:0 Comments

My wife and I have a cottage on the Greek island of Alonissos – at the very top of the village in the photo to the right.  We like the…

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The Anatomy and Timing of a Web Request – Part II

  • Post author:TerryE
  • Post published:4 April 2011
  • Post category:Performance/Shared Hosting
  • Post comments:0 Comments

In Part I of this analysis, I looked at the overall timeline of viewing a webpage, and my main recommendations were: The correct webserver configuration is essential to ensure that…

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The Anatomy and Timing of a Web Request – Part I

  • Post author:TerryE
  • Post published:2 April 2011
  • Post category:Performance/Shared Hosting
  • Post comments:0 Comments

My academic background was mathematics, specialising in operations research and statistics.  I put this to good use when I first started my career in an IT consultancy, in working one…

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phpBB Performance – Reducing the script load overhead

  • Post author:TerryE
  • Post published:11 March 2011
  • Post category:Performance/Shared Hosting
  • Post comments:0 Comments

This is the third in a series of phpBB performance articles and in this one I want to investigate how feasible it would be to use code globbing to reduce…

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phpBB Performance – Reducing the data cache overhead

  • Post author:TerryE
  • Post published:9 March 2011
  • Post category:Performance/Shared Hosting
  • Post comments:0 Comments

As I described in a previous article, you can use Linux utility strace to instrument a web request simulation and suPHP model. sudo -u www-data strace -tt -o /tmp/strace.log php…

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phpBB Performance – A 3x challenge

  • Post author:TerryE
  • Post published:9 March 2011
  • Post category:Performance/Shared Hosting
  • Post comments:0 Comments

The trigger for this article was a conversation with Mark Fisher, someone that I mentored through his early career, and who has remained a close friend over the years, though…

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PHP – Why is image activation such an overhead?

  • Post author:TerryE
  • Post published:8 March 2011
  • Post category:Blog S/W/Performance
  • Post comments:0 Comments

As I’ve discussed in earlier articles, such as Using PHP applications on a Webfusion hosted service (Linux), a webserver will be able to achieve far higher thoughput processing PHP requests…

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