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Re: InstantDB: InstantDB optimizations


Peter,

Thanks, I upped that and things work great now!  Seems to take a much smaller
footprint in memory!

Thanks, Jason

Peter Hearty wrote:

> Jason
>
> Don't know if this is the same problem, but I alsu got an out of boubds
> exception until I upped singleRowCount to one from zero.
>
> Pete
>
> ----- Original Message -----
> From: Jason Amy <jason@cafesoft.com>
> Date: Wednesday, January 31, 2001 6:19 pm
> Subject: Re: InstantDB: InstantDB optimizations
>
> > Peter, thanks for the minumum setting recommendation.
> >
> > I tried running with the min settings you sent me, but was getting
> > null pointer
> > exceptions:
> >
> > java.sql.SQLException: java.lang.IndexOutOfBoundsException
> > at
> > org.enhydra.instantdb.jdbc.idbConnection.<init>
> (idbConnection.java:88) at org.enhydra.instantdb.jdbc.idbDriver.connect
> (idbDriver.java:40)
> > at java.sql.DriverManager.getConnection(DriverManager.java:517)
> > at java.sql.DriverManager.getConnection(DriverManager.java:177)
> > <snip>
> >
> >
> > So I increased
> >
> > systemCacheSize=100 (was 0)
> >
> > Which got past the first null pointer exception, but now I get
> > this one
> > (IndexOutOfBoundsException):
> >
> > Enhydra InstantDB - Version 3.26 beta 2
> > The Initial Developer of the Original Code is Lutris Technologies Inc.
> > Portions created by Lutris are Copyright (C) 1997-2001 Lutris
> > Technologies, Inc.
> > All Rights Reserved.
> > AWT-EventQueue-0 Opening database dAWT-EventQueue-0 Closing
> > database App opens=1
> > Database App is shutting down...
> > Database App shutdown complete.
> > AWT-EventQueue-0 Opening database dAWT-EventQueue-0 Opening
> > database dAWT-EventQueue-0 Opening database dAWT-EventQueue-0
> > Closing database App opens=3
> > AWT-EventQueue-0 Opening database dAWT-EventQueue-0 Closing
> > database App opens=3
> > AWT-EventQueue-0 Opening database dAWT-EventQueue-0 Closing
> > database App opens=3
> > AWT-EventQueue-0 Closing database App opens=2
> > AWT-EventQueue-0 Opening database dAWT-EventQueue-0 Closing
> > database App opens=2
> > AWT-EventQueue-0 Opening database dAWT-EventQueue-0 Closing
> > database App opens=2
> > AWT-EventQueue-0 Opening database dAWT-EventQueue-0
> > java.sql.SQLException: java.lang.IndexOutOfBoundsException
> >
> > java.sql.SQLException: java.lang.IndexOutOfBoundsException
> > at org.enhydra.instantdb.db.SQLProg.execute(SQLProg.java:288)
> > at
> > org.enhydra.instantdb.jdbc.idbPreparedStatement.execute
> (idbPreparedStatement.java:92)
> >
> > at
> > org.enhydra.instantdb.jdbc.idbPreparedStatement.executeQuery
> (idbPreparedStatement.java:59)
> >
> > I'm tinkering with the other settings, but can't seem to get past this
> > IndexOutOfBoundsException.  I have tried this with 3.25 and 3.26b -
> > same
> > results.  If I revert back to the original settings, everything
> > works.  I'll keep
> > tinkering away, and if anyone has any input it would be appreciated!
> >
> > Thanks, Jason
> >
> >
> >
> > Peter Hearty wrote:
> >
> > > Jason
> > >
> > > The following properties can be adjusted to vary the sizes of
> > internal> buffers and caches. The values that follow sets
> > everything to pretty much
> > > minimum values. I haven't tried these out. If they give any
> > problems then
> > > try increasing them slightly. Their meanings are described in:
> > >
> > >
> >
> http://instantdb.enhydra.org/software/documentation/idb3_26b2/props.html
> >
> > > cacheAmount=0
> > > cacheCondition=CACHE_ROWS
> > > systemCacheSize=0
> > > systemCacheCondition=CACHE_ROWS
> > > resultsOnDisk=1
> > > resultsSetCache=CACHE_ROWS
> > > resultsSetCacheAmount=0
> > > rowCacheSize=16
> > > singleRowCount=0
> > > systemRows=0
> > > controlColCacheSize=16
> > > traceLevel=0
> > >
> > > In addition, if you want IDB to do garbage collection (3.26 beta
> > 2 only)
> > > then set:
> > >
> > > garbageCollectStatements=10
> > > garbageCollectPercent=70
> > >
> > > Also, if the data is read only, then set:
> > >
> > > transLevel=0
> > >
> > > Regards
> > >
> > > Pete
> > >
> > > --
> > >
> > > Peter Hearty                         peter.hearty@lutris.com
> > > Lutris Technologies (UK)        http://www.lutris.com
> > > ----- Original Message -----
> > > From: "Jason Amy" <jason@cafesoft.com>
> > > To: <InstantDB@enhydra.org>
> > > Sent: Friday, January 26, 2001 5:06 PM
> > > Subject: InstantDB: InstantDB optimizations
> > >
> > > > Hello,
> > > >
> > > > I looked in the mail archives for information regarding my
> > question, but
> > > > could find none, so here goes:
> > > >
> > > > We have an application that runs on a users desktop.  The
> > application> > has 'plugins' which are pieces of code that we can
> > write that seamlessly
> > > > plugin to the main app.  One of these plugins uses InstantDB.  Our
> > > > problem lies in when a particular plugin starts, it runs
> > queries on a
> > > > single InstantDB database.  This database has 10 tables, and
> > all the
> > > > tables combines are .97 megabyte.  None of the tables has more
> > than 7
> > > > columns, and an average of about I'd say 50 rows.  Most data
> > is of type
> > > > char(10) (My SQL syntax may be off, but they're mostly small
> > strings).> > We are noticing a 'jump' in memory usage when the
> > plugin is initialized
> > > > (actually our client has mentioned this memory spike).  Using
> > > > OptimizeIt! I have noticed the largest consumer of memory to
> > be the
> > > > byte[] and char[].  The spike is between 4 and 5 megs (we are
> > trying to
> > > > keep this down to less than 2 megs).  I have changed some of the
> > > > optimization settins in the .prp file (namely the
> > resultsOnDisk to = 1),
> > > > but do not seem to notice much difference.  If someone out
> > there has
> > > > come across this problem, or can enlighten me, it would be greatly
> > > > appreciated!
> > > >
> > > > -Thanks, Jason
> > > >
> > > > ---------------------------------------------------------------
> > -----------
> > > ---
> > > > To unsubscribe from this mailing list, send email to
> > majordomo@enhydra.org> > with the text "unsubscribe instantdb" in
> > the body of the email.
> > > > If you have other questions regarding this mailing list, send
> > email to
> > > > the list admin at owner-instantdb@enhydra.org.
> > > >
> > >
> > > -----------------------------------------------------------------
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> > > If you have other questions regarding this mailing list, send
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> >
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> > If you have other questions regarding this mailing list, send
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> >
>
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