[Zope] Re: compile time optimizations for python

Allen Schmidt Sr. aschmidt at fredericksburg.com
Sat Jan 19 21:53:27 EST 2008


So would this also apply to older zopes? Like 2.7.5?? Exactly where is 
that changed and in what increments are safe to increase it by?

Thanks

Allen


Tres Seaver wrote:

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> Suresh V. wrote:
> 
>>Tres Seaver wrote:
>>
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>>> - Tune the ZEO disk cache size (the warning sign is seen lots of
>>>   "ZEO cache flip" entries in the event log).
>>>
>>
>>Can you explain this some more?
>>
>>1. Do we increase the cache size when we see these ZEO cache flips?
> 
> 
> Yes  In general, keep increasing it until they are no longer "noticeable".
> 
> 
>>2. What is a "good" rate for these cache flips?
> 
> 
> I don't have a firm sense, but no oftener than every hour, say:  when
> the cache flips, you lose half the working set (the "oldest" half).
> 
> 
> 
> Tres.
> - --
> ===================================================================
> Tres Seaver          +1 540-429-0999          tseaver at palladion.com
> Palladion Software   "Excellence by Design"    http://palladion.com
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