On Thu, Feb 02, 2006 at 07:21:48PM -0500, Dan Langille wrote:
> As the author of the Bacula PostgreSQL module, I'm curious as to why 
> you would go in that direction.  Most people tend to move to 
> PostgreSQL from MySQL.
> 
> Is there something missing you need?

I'm also considering switching from postgres to mysql on my home
machine. While I prefer almost everything about postgres, I'm having
trouble getting the performance I need out of it. I have read quite a
bit about tuning postgres and still can't seem to get thing the way I
want.

My current problem has to do with selecting files for a recover utility
that I'm working on. I want to be able to query the database for the
contents of a single directory at a time, this will allow for a much
faster restore when you want to only grab a file or two from a very
large backup.

I had to add a couple of indexes to the File table and I had things
working pretty well until I realized I needed one more bit of data from
the Filename table. At this point, postgres went from returning the data
within a second to taking 30 or so seconds to do it. All of my queries
are using indexes and nothing returned from the explain command shows me
anything that I can see as a problem.

I have run the equivalent query against mysql on a much larger database
and it returns in less than a second.

BTW One of the things I really like about postgres is the fact that
coming up with this query was pretty straight forward using standard sql
references. The changes needed to make the query work with mysql just
about drive me nuts.

-- 
Karl Hakimian
[EMAIL PROTECTED]


-------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc. Do you grep through log files
for problems?  Stop!  Download the new AJAX search engine that makes
searching your log files as easy as surfing the  web.  DOWNLOAD SPLUNK!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642
_______________________________________________
Bacula-users mailing list
Bacula-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bacula-users

Reply via email to