On Thu, May 14, 2009 at 06:48:07PM -0700, Scott Haneda wrote:
> Thank you very much, I do not think a million will be hit for some time.
> Is there any penalty when you run postmap to read in the changes to the
> virtual_alias_maps file? I know it is not a server restart, and can happen
> without interruption of service, though I wonder what happens when you
> issue a postmap on a million line file.
You consume some CPU and burn some disk I/O ops. Daemons that use the
indexed file with re-start at a convenient point in time (i.e. not in
the middle of a transaction, ...). Regardless of size, you should not
be re-building indexed files frequently (more than a few times a day) ,
if you are, use *SQL or LDAP.
--
Viktor.
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