I'm curious -- what will you do with the RAM you take away from InnoDB's
buffer pool? (In a dedicated MySQL server, I seen no reason to alter the
size.)
> From: Elena Kasyanova <degifter@stripped>
> Date: Mon, 8 Feb 2010 16:55:12 +0300
> To: <internals@stripped>
> Subject: Changing innodb_buffer_pool_size on the fly
>
> Hello!
>
> It is not possible to reconfigure innodb_buffer_pool_size via SET
> GLOBAL ... or smth, but I want to implement this option in order to
> use it when server load changes significantly.
>
> Exploring the source code I see a "buf_pool_resize" function in
> ./storage/innodb_plugin/buf/buf0buf.c that is not called anywhere.
> I can see how I can set up a callback for changing a system variable.
>
> So, given a ready resize function and the ability to make a callback,
> the solution seems quite simple.
> Are there any issues that do not allow to implement this resize?
> Or something else that should be considered?
>
> Thanks, Elena.
>
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