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From Radhika R <>
Subject please unsubscribe my account
Date Thu, 06 Sep 2001 06:28:44 GMT

-----Original Message-----
From: Brian Pane []
Sent: Thursday, September 06, 2001 11:30 AM
Subject: Re: remaining CPU bottlenecks in 2.0

dean gaudet wrote:


>>* memset() is called mostly from apr_pcalloc(), which in turn is
>>  used in too many places to yield any easy optimization opportunities.
>sometimes folks are lazy and ask for zeroed memory out of habit, when they
>could easily deal with garbage at less cost.
Some good news here: I dug through the profile data and found that over half
the httpd's calls to apr_pcalloc are from one function, 'find_entry' in the
apr_hash_set implementation.  It uses apr_pcalloc to allocate a struct with
5 fields, and then it immediately overwrites 4 of those fields.  I'll submit
a patch to the APR dev list to fix this.


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