Impact of name resolution on mysql_connect perfomance

Posted: Jun 06, 2010  1 comments  

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I spend lot of time profiling popular PHP applications finding where exactly processing time is spent during PHP execution. Few months ago, one thing which caught my attention was performance of mysql_connect API. On my windows test bench, xdebug output showed that one call to mysql_connect was taking 0.31 seconds which is huge. While playing with the API, I noticed that when IP address of the MySQL machine is used instead of the hostname, performance of mysql_connect API is much better. Read more ...

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