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Simon Willison’s Weblog

6 items tagged “profiling”

How to find un-indexed queries in MySQL, without using the log (via) Use tcpdump(!) to sniff the MySQL protocol and dump out queries that had the “no index used” bit set. 0 19th August 2009, 11:42 am

Building a Better JavaScript Profiler with WebKit. Clever hack from Francisco Tolmasky which solves the problem of JavaScript profilers showing ? as the name of any anonymous functions. He patched the WebKit profiler to look for a displayName attribute on a function and show that as the function name instead. 0 29th April 2009, 11:57 pm

Heap Dump Analysis. Using jmap to dump the JVM’s memory to disk, then analysing it using the visualvm GUI tool. 0 2nd April 2009, 10:34 am

Using the New MySQL Query Profiler. Extremely powerful new feature in MySQL 5.0.37. Definitely something for the Django debug toolbar. 2 1st October 2008, 1:20 am

Deep Profiling jQuery Apps. Neat plugin from John Resig that monkey-patches most (all?) of the jQuery methods to build up a detailed profile of which methods are being used by a given page. 1 16th June 2008, 10:20 am

YSlow: Bug (fix) in Firebug’s Net Panel. The latest release of the YSlow page analysis plugin (announced at FOWA) also fixes a misleading bug in Firebug’s Net panel. 0 5th October 2007, 10:26 pm

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