Hi Ilya, The array isn't adjusted, it's actually created new and assigned to the sender. I think that the problem may be that update-active-categories was using a #'>= test rather than a #'> test. I'm not sure I've got the time to make a complete test case for this right now (i.e., one that fails with #'>= and passes with #'>) but the current suite passes with the change. What do you think? thanks, On Feb 26, 2009, at 2:15 PM, Ilya Perminov wrote:

Hi,

I finally figured out why log5 sometimes becomes very slow. It happens when handle-message needs to update active-categories (because a new category is added). Array active-categories created by make-active-category- array has a fill pointer. When function update-active-categories adjusts the array, it does not touch the fill pointer. The array length always remains the same and handle-message updates active-categories on every invocation.

Regards, Ilya

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