Re: Xeon vs Opteron - tests and questions

Jim C. Nasby napisał(a):

>That link isn't working for me,
>

Uppssss sorry... now it should work OK.

>but if you're seeing 'spikey'
>performance I'd bet that you need to change the bg_writer settings to
>make it more aggressive, especially if you're seeing performance drops
>Every 5 minutes (assuming default checkpoint settings).
>
>
>You might also want to up wal_buffers and maybe checkpoint_segments.
>
>

OK many thanks, I will check.


>On Wed, Nov 09, 2005 at 03:26:51PM +0100, Marcin Giedz wrote:
>
>
>>Hello.
>>
>>
>>I made some test comparing postgresql 8.0.4 based on two servers.
>>
>>Here is a link:
>>http://85.128.68.44/
>>
>>
>From my point of view it seems like:
>>    - with opteron I found that it works very FAST periodicaly, why??? Maybe I
>>did something wrong or.....
>>    - xeon seems to work almost all time on the same level but has much less
>>performance than opteron. Is it normal?
>>
>>Did anyone has similar tests/results?
>>
>>BR,
>>Marcin
>>
>>---------------------------(end of broadcast)---------------------------
>>TIP 9: In versions below 8.0, the planner will ignore your desire to
>>       choose an index scan if your joining column's datatypes do not
>>       match
>>
>>
>>
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