On Friday 02 May 2008 16:28, Daniel Cheng wrote: > On Fri, May 2, 2008 at 11:24 PM, Robert Hailey > <robert at freenetproject.org> wrote: > > On May 2, 2008, at 9:59 AM, j16sdiz at freenetproject.org wrote: > > > > Author: j16sdiz > > Date: 2008-05-02 14:59:50 +0000 (Fri, 02 May 2008) > > New Revision: 19683 > > > > Modified: > > trunk/freenet/src/freenet/store/BerkeleyDBFreenetStore.java > > Log: > > oomhook: lower database cache size > > > > > > Modified: trunk/freenet/src/freenet/store/BerkeleyDBFreenetStore.java > > =================================================================== > > --- trunk/freenet/src/freenet/store/BerkeleyDBFreenetStore.java 2008-05-02 > > 14:59:29 UTC (rev 19682) > > +++ trunk/freenet/src/freenet/store/BerkeleyDBFreenetStore.java 2008-05-02 > > 14:59:50 UTC (rev 19683) > > @@ -25,6 +25,7 @@ > > import com.sleepycat.je.DatabaseNotFoundException; > > import com.sleepycat.je.Environment; > > import com.sleepycat.je.EnvironmentConfig; > > +import com.sleepycat.je.EnvironmentMutableConfig; > > import com.sleepycat.je.LockMode; > > import com.sleepycat.je.OperationStatus; > > import com.sleepycat.je.RunRecoveryException; > > @@ -2247,6 +2248,11 @@ > > keysFC.force(true); > > if (lruFC != null) > > lruFC.force(true); > > + > > + EnvironmentMutableConfig dbmc = environment.getMutableConfig(); > > + long cacheSize = (long) (dbmc.getCacheSize() * .9); // we have 6 > > databases, 0.9^6 = 0.53 > > + dbmc.setCacheSize(cacheSize); > > + Logger.normal(this, "low memory, set db cache = " + cacheSize); > > } > > > > > > What is the significance of 0.9^6=0.53? It seems to me if you are trying to > > half the memory usage, all the caches would have to be reduced by 0.5; > > otherwise the comment could be made a bit more clear. > > > > Yes, I am trying to half the memory cache. > This cache is global, setting to 90% 6 times give 53% of original size.
I'm not sure that makes sense. Don't you just want to set it to 90% overall? -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available URL: <https://emu.freenetproject.org/pipermail/devl/attachments/20080503/829501cc/attachment.pgp>
