[Zope] Re: compile time optimizations for python

[Tres Seaver]

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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.
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Tres Seaver          +1 540-429-0999          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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