RE: [OFBiz] Users - OFBIZ Cache Tuning in base/config/cache.properties
Posted by
MPF-2 on
URL: http://ofbiz.116.s1.nabble.com/OFBiz-Users-OFBIZ-Cache-Tuning-in-base-config-cache-properties-tp136154p136156.html
All interested
Firas, thanks for your feedback. Thought
Im the only one interested.
>> Q1: What is the Flag "useSoftreference"
for?
> A1: The useSoftReference property is used to specify whether soft
references
> should be used for cache entries. Soft references help keep large
caches
> from taking too much memory by allowing the garbage collector to clear
these entries
> when more memory is needed. Possible values: true/false.
Summery: It is recommended to set useSoftreference
= "true" for larger caches.
Would anybody with a large site posts
his optimzed cache.properies file here?
I have only the default one with the
recommendations from the BasicProductionSetupGuide implemented.
What other tunings do you do?
mit freundlichen Grüssen/ Kind regards
/ muchos saludos
--
Dipl. Wirt.-Ing. Michael Pfurtscheller
zentric GmbH & Co. KG
mobil: +49-172-5457143
fon: +49-6101-556060
fax: +49-6101-556065
icq# 8724822
mailto:[hidden email]
http://www.zentric.com
[hidden email] wrote on 21.10.2005
13:06:18:
> Hi,
>
> Better late than never. Answers to some of your questions. I'm too
is
> interested in more info on this subject.
>
> Q1: What is the Flag "useSoftreference" for?
> A1: The useSoftReference property is used to specify whether soft
references
> should be used for cache entries. Soft references help keep large
caches
> from taking too much memory by allowing the garbage collector to clear
these entries
> when more memory is needed. Possible values: true/false.
> Q2: Question: What unit is "maxSize"...?
> A2: Specifies the maximum number of entries in the cache.
>
>
> Regards,
>
> </Firas>
>
> ________________________________
>
> From: [hidden email] [mailto:[hidden email]]
> On Behalf Of [hidden email]
> Sent: den 17 oktober 2005 11:43
> To: OFBiz Users / Usage Discussion
> Subject: [OFBiz] Users - OFBIZ Cache Tuning in base/config/cache.properties
>
>
>
> Hi again on this issue,
>
> I reseached over the available documentation again (last time in march
2005
> ) but didnt find any news. So this is another attemp to get a better
> understanding.
>
> Existing Info I found:
> Wiki: http://ofbizwiki1.go-integral.com/Wiki.jsp?page=CacheSettings
> ProductionSetupguide:
> http://www.undersunconsulting.com/static/OFBizBasicProductionSetup.pdf
>
> There is not much detail in those documents. They both pretty much
say: Do
> it in the cache.properties :-)
>
> I think all ofbiz admins need more detail on it. Thats why I specify
the
> questions more detailed and would appreceate if anybody would post
a example
> fine-tuned cache.properties file
>
> All Feedback and hints will be compiled by me and added to the wiki/faq
>
> So here are my questions
> 1. Question: What is the Flag "useSoftreference" for? What
does true and
> false do?
> 2. Question: What unit is "maxSize" and what if it is left
empty in the
> cache.propery?
>
>
> 3.Question: What exactly do the per-delegator Entity Engine cache
settings
> tune?
> #Examples for per-delegator Entity Engine cache settings
> #entitycache.entity-list.default.ProductPriceRule.expireTime=0
> #entitycache.entity-list.default.ProductPriceRule.useSoftReference=true
>
> 4. On the Cache Maintenance Page I finde entriey like
> "entitycache.entity.default.XXXX" and
> "entitycache.entity-list.default.XXXXX". What is the difference
betwen
> those?
> And why is there no entry in the cache.properties for
> entitycache.entity.default.XXXX entries?
> Where do I create those entitycache.entity.default.XXXX entries
> 5. Questions regarding the Cache Maintenance Page
> I cleared the cache and afterwards I montitored the caches (I hope
the
> formating with tabs is visibel too you)
>
> Cache Name size hitCount missCount maxSize expireTime useSoftRef?
> a) entitycache.entity-list.default.ProductCategoryMember 9,822 7,992
54,072
> 20,000 86,400,000 true
> b) entitycache.entity-list.default.ProductPriceAction 52 2,180 2,736
3,000
> 86,400,000 true
> c) entitycache.entity-list.default.ProductPriceCond 109 56,733 59,239
70,000
> 86,400,000 true
>
> On a) With cache the missCount was allmost emmidiatly at 54000 the
hitCount
> and size slowly crow. My question now is: Why isnt the size 20000
after
> 54000 misses? TheProdukctCategoryMember is ideal for caching.
> On b and c) since cache clearing the cachehit count is growing almost
linear
> with the misscount! Why? Those tables are suppossed to be queried
every
> almost every shop hit and the tables are static! So I would expect
the
> missCount to be growing very slowly and the hitCount to grow very
fast.
>
> 6. Qustion: What other tuning for the cache.properties tips are there?
> Answer from
> http://www.undersunconsulting.com/static/OFBizBasicProductionSetup.pdf
> ${ofbiz insall dir}/base/config/cache.properties
> Fresh from SVN, this file is configured to be development friendly
to reload
> resources frequently. For production use the expire times for the
caches in
> the last
> section of the file should all be commented out by putting a pound
sign "#"
> at the
> beginning of each line. The properties in question start with "minilang.",
> "script.",
> "webapp.", "widget." And "template.".
>
> Bye
> Michael
>
>
>
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