The attached patch modifies ldirectord to fork a process for each virtual server to speed up response time with large numbers of virtual servers. I am testing this vs multiple instances of ldirectord, two virtual servers, three real servers each, and it uses about 25MB less ram over that, and starts up a lot quicker.
Other things to note $0 is set for the children so you can see what virtual server each is managing, and what real server it's checking from ps All children are supervised by the parent, and restarted if they exit. Due to issues with state tracking, when a child starts, it forces all of it's real servers down until it rechecks them. This fixed issues with the state of the real servers changing between when a child dies and when it is restarted. Reloading the config kills all children due to not being able to muck about with their state. Due to reasons stated above, this may cause a brief service interruption. I'd like feedback on this patch, and any constructive criticism, suggestions, bug fixes, etc are welcome. Do please note that I coded this after being sick and awake for about 20 hours straight (cough was keeping me up), so it probably isn't my best work. Standard disclaimer: This is not well tested code. Don't run it in your massive data center. If you do anyway, I'm not responsible for any failures that result from it's use. -- Ryan Castellucci http://ryanc.org/
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