Subject | Re: Slow Sweep speed on large database - Long post |
---|---|
Author | Eduardo A. Salgado |
Post date | 2005-08-05T14:19:51Z |
--- In firebird-support@yahoogroups.com, Alexandre Benson Smith
<iblist@t...> wrote:
Now, implementing your other suggestions ... worked!
I identified some 6 really bad indexes and deleted them.
Sweep was then instantaneous!
Back up took just 7:01 minutes and Restore about 20 minutes. Success!
Now, since I have you on the line, refresh me again on how to turn
indexes with low selectivity into better indexes. I am about to test
some queries for timing with and without the indexes. So, building
better selective indexes will help a lot.
Thanks!
-Eduardo
<iblist@t...> wrote:
> The client interface are the same for SS ou CS, so if you installOK, I'll look into it.
> CS on some sites (that could benefit from it) will not hurt the
> others and requires zero changes in your app code. ;-)
Now, implementing your other suggestions ... worked!
I identified some 6 really bad indexes and deleted them.
Sweep was then instantaneous!
Back up took just 7:01 minutes and Restore about 20 minutes. Success!
Now, since I have you on the line, refresh me again on how to turn
indexes with low selectivity into better indexes. I am about to test
some queries for timing with and without the indexes. So, building
better selective indexes will help a lot.
Thanks!
-Eduardo