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1. Re: Standalone TreeCache with Configured LRU policy???
ben.wang May 19, 2005 6:22 PM (in response to cork)There is no good way to configure eviction policy programmtically since by design it is supposed to be pluggable.
So from the start, we can only setEvictionPolicyConfig as an opaque Element and inject it to the specific policy for it to parse.
In addition, the injection has to be done during cache start up time.
-Ben -
2. Re: Standalone TreeCache with Configured LRU policy???
cork May 20, 2005 3:25 AM (in response to cork)Okay then is there some documentation how to configure this for standalone use. ie what xml I need and where to put it etc. Maybe an example would be good.
Many Thanks
Peter -
3. Re: Standalone TreeCache with Configured LRU policy???
cork May 20, 2005 3:29 AM (in response to cork)Also is the LRU limited to 20,000 items or is this also configurable?
Cheers
Peter -
4. Re: Standalone TreeCache with Configured LRU policy???
ben.wang May 20, 2005 12:58 PM (in response to cork)No, but it buffer size is fixed so you will need to tune your time to live and also the eviction thread frequency (wakeUpIntervals).
-Ben -
5. Re: Standalone TreeCache with Configured LRU policy???
cork May 23, 2005 3:27 AM (in response to cork)Hi Ben,
I'm still struggling with this, can you tell me how to get a copy of the source so that I can see whats going on.
Some documentation on how to configure this standalone would also be appreciated.
Cheers
Peter -
6. Re: Standalone TreeCache with Configured LRU policy???
ben.wang May 23, 2005 9:11 AM (in response to cork)http://www.jboss.org/wiki/Wiki.jsp?page=CVSRepository
to check out the source. THere if no documentation on how to configure your own eviction policy progrmatically.
Would you like contribute one if you get it to work. :-)
-Ben -
7. Re: Standalone TreeCache with Configured LRU policy???
cork May 23, 2005 9:23 AM (in response to cork)I thought I read somewhere that the source for JBossCache was now on a seperate cvs branch someplace else?
I don't mind to configure it from xml for now, but I can't find documentation to do that either... only for the mbean/jboss environment.
Maybe when I have the source and got it working I will put together a little HowTo for you :)
Cheers
Peter -
8. Re: Standalone TreeCache with Configured LRU policy???
cork May 25, 2005 7:44 AM (in response to cork)I got it configured at last :) I just hadn't realised it was using the same xml file as for an MBean environment. So I was just missing the loading of the configuration.
cache = new TreeCache();
PropertyConfigurator config = new PropertyConfigurator();
config.configure(cache, "cacheconfig.xml");
cache.start();
One thing I did notice was that the performance is nearly twice as slow for the gets now compared to having no configuration loaded, any ideas?
Cheers
Peter -
9. Re: Standalone TreeCache with Configured LRU policy???
dnielben May 28, 2005 2:25 AM (in response to cork)Maybe the configuration is using now a cacheLoader, so is persiting the changes made in the cache. You can review if your conf file has something like.
<attribute name="CacheLoaderClass">org.jboss.cache.loader.FileCacheLoader</attribute> <attribute name="CacheLoaderConfig"> location=c:\\tmp </attribute> <attribute name="CacheLoaderShared">true</attribute> <attribute name="CacheLoaderPreload">/</attribute>
And if you have it, comment it to deactivate cacheloader.
Regards -
10. Re: Standalone TreeCache with Configured LRU policy???
cork May 30, 2005 4:34 AM (in response to cork)I'm adding 100,000 items to the cache (single node). Then I do 100,000 random reads. Without the config it takes around 774ms with this config 1273ms. The same test using a LinkedHashMap only takes 182ms (with synchronization).
This is the config I'm using:<?xml version="1.0" encoding="UTF-8"?> <server> <classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar"/> <mbean code="org.jboss.cache.TreeCache" name="jboss.cache:service=TreeCache"> <depends>jboss:service=Naming</depends> <depends>jboss:service=TransactionManager</depends> <attribute name="IsolationLevel">REPEATABLE_READ</attribute> <attribute name="CacheMode">LOCAL</attribute> <attribute name="MaxCapacity">200000</attribute> <attribute name="InitialStateRetrievalTimeout">2000000</attribute> <attribute name="SyncReplTimeout">10000</attribute> <attribute name="LockAcquisitionTimeout">15000</attribute> <attribute name="LockLeaseTimeout">60000</attribute> <attribute name="EvictionPolicyClass">org.jboss.cache.eviction.LRUPolicy</attribute> <attribute name="EvictionPolicyConfig"> <config> <attribute name="wakeUpIntervalSeconds">1</attribute> <region name="/_default_"> <attribute name="maxNodes">200000</attribute> <attribute name="timeToIdleSeconds">0</attribute> </region> </config> </attribute> </mbean> </server>
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11. Re: Standalone TreeCache with Configured LRU policy???
belaban May 30, 2005 5:20 AM (in response to cork)Do you have the test available ? I suggest create a JIRA (jira.jboss.com) issue and attach the test to it.
Locking comes with a cost, if you used IsolationLevel=NONE you'd probably get better numbers. -
12. Re: Standalone TreeCache with Configured LRU policy???
cork May 30, 2005 7:25 AM (in response to cork)He Bela,
I created an issue and attached a small test. JBCACHE-172
Hope it's just something silly I'm doing :)
btw, IsolationLevel=NONE made no difference
Cheers,
Peter -
13. Re: Standalone TreeCache with Configured LRU policy???
belaban May 30, 2005 8:16 AM (in response to cork)I'll look at this in the 1.3 time frame.
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14. Re: Standalone TreeCache with Configured LRU policy???
nithinnambiar Aug 10, 2005 6:43 AM (in response to cork)Hi Cork,
Could you please send us detailed information on how to setup TreeCache as Standalone application?
We need the xml file information and where should we put the xml file when we start the TreeCache as Standalone application.
Also, give me your email ID.
Advance Thanks,
Nitin