Comments on: Do You Know What Your Database is Doing?

By: David Cramer

David Cramer — Fri, 08 Aug 2008 14:20:31 +0000

I was just curious as to if any more of your tickets were accepted and patched in?

By: Finally! A Modern Development Tool « metajack

Finally! A Modern Development Tool « metajack — Fri, 30 May 2008 23:09:46 +0000

[...] which is the platform I use most. At Chesspark, we’ve mostly concentrated on optimization by analyzing database queries and improving database use in the Django [...]

By: metajack

metajack — Wed, 23 Apr 2008 16:48:51 +0000

Paramjeet,

It’s a small bug in the script when there are no queries detected. I think perhaps you need to tweak the regex to match what your logs produce so that the queries are properly detected.

By: Paramjeet Bhella

Paramjeet Bhella — Fri, 18 Apr 2008 23:28:27 +0000

Hi Jack,

I downloaded your analyze script for postgres query analyses but when I run it I get errors. Can you please help me fix this. Here is the error I get:

-bash-3.00$ cat postgresql-Wed.log | ./analyze.py > myreport.txt
Traceback (most recent call last):
File “./analyze.py”, line 142, in ?
main()
File “./analyze.py”, line 101, in main
tot_queries = reduce(lambda x, y: x + y, [len(queries[q]) for q in queries.keys()])
TypeError: reduce() of empty sequence with no initial value

Thanks
Paramjeet Kaur

By: Eric Florenzano

Eric Florenzano — Thu, 02 Aug 2007 23:50:43 +0000

Awesome…thanks for the reply. That will certainly be helpful to me, as I’m developing using Django as my framework.

By: metajack

metajack — Thu, 02 Aug 2007 22:02:20 +0000

Eric, sorry I forgot to mention this in the post, but you have find all our Django patches in the Django bug tracker. One or two of them have made it upstream and the others are awaiting decisions. I’ll post a new entry shortly with an overview and links to the patches.

By: Eric Florenzano

Eric Florenzano — Thu, 02 Aug 2007 20:55:19 +0000

Thanks for this great article, however, one thing that I’m still curious about is how you ended up dealing with the Django overuse of transactions and startup queries?