[development] MySql Performance Problem

[Victor Kane]

You may ultimately wish to consider the option of grabbing at least some of
the data in straightforward single table lookups into PHP hashes and then
operating on those using PHP array operations, liberating yourself from so
many MySQL joins and string ops.

Victor Kane
http://awebfactory.com.ar

On Mon, Jul 19, 2010 at 3:05 PM, Mukesh Agarwal
<mike4u4ever2001 at gmail.com>wrote:

> I suggest not to index the votingapi tables, they are usually written very
> often and there adding an index will create an overhead.
>
> The join clauses have a lot of string comparison. If you have a good index
> size, then you should index the string fields first, else this query is
> always going to be a bottleneck.
>
> 8000 nodes is actually not a lot, try removing the WHERE and ON clauses one
> by one and you might find the solution.
>
> Cheers,
> Mukesh
>
>
>
> On Mon, Jul 19, 2010 at 11:25 PM, Domenic Santangelo <domenics at gmail.com>wrote:
>
>>
>> On Jul 19, 2010, at 10:18 AM, nan wich wrote:
>>
>>  Can someone suggest ways to improve the performance?
>>
>>
>> First thing to do: indexes on the radioactivity, print_page_counter,
>> print_mail_page_counter and (possibly) votingapi_cache tables. I say
>> possibly on that one because I can't remember the behavior of that table and
>> if indexing it might decrease performance elsewhere.
>>
>> hth,
>> D
>>
>
>
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