performance

I've been helping do some profiling on a large Drupal site and the tool that I find indispensable for doing this is KCachegrind. Unfortunately, since I've migrated back to OSX on my main machine I've not had all the same tools that I rely on with Linux- specifically KCachegrind.

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A couple of weeks ago I did some comparison benchmarks between Drupal 6 and Drupal 7. They showed that for most requests in Drupal 7, we've reduced the number of database queries issued significantly, but we're spending a lot more time in PHP. So good and bad news.

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I've been doing quite a bit of work recently trying to improve performance in Drupal 7. This has included both reducing the raw number of queries run per page, particularly those generated by node_load() and drupal_lookup_path(), and also trying to track down some PHP bottlenecks. In January, I compared nodes vs. comments in HEAD. However there haven't been any comparisons between Drupal 6 and 7 recently.

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I've just made my slides from Performance in Drupal 7 available. There's also video at archive.org

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