« Space Invaders? | Main | Office 365 Contact Lists and Groups Explained »

When you say "it seems slow", what does that mean?

155024495_203a230b7c_z

About five years ago, SCLS recommended that libraries use a timing tool for Firefox called Life of Request Information (LORI), to help assess response time for applications and network connections, especially for Koha.

Unfortunately, LORI hasn't been updated recently, and it is not 100% compatible with modern Firefox. You can still make LORI work, but technically it is obsolete and in some cases it may have serious conflict with websites or other add-ons.

Luckily, a pretty decent replacement is available for it; the Page Speed Monitor (PSM) extension. The free PSM widget is easy to install, easy to use, and available for both Firefox and Chrome. In each browser, it shows up as a small icon in the toolbar, typically in the upper right corner of the window though this may vary if you're using a custom theme. The appearance of the toolbar icon is slightly different for FF and Chrome, as shown here.

App.telemetry.toolbar.iconsEach time you load a page, the PSM toolbar icon is overlaid with the total load time in seconds, timed from when you first requested the page to when the browser finished rendering it. If you click the icon you'll see a detailed breakdown of the timing elements.

App.telemetry.details

From these elements you can estimate how much of the time is due to network or web server responsiveness (the DNS and TCP metrics), versus how much is from the weight or complexity of the page content (the Processing metric). Refer to the Page Speed Monitor download page for a technical description of each timing element.

Comments

Feed You can follow this conversation by subscribing to the comment feed for this post.

The comments to this entry are closed.