Times ten not scaling how to speed up.

Question

Hello Everyone,
I am doing evaluation of times ten to use it as cache but it is not scaling in my test bed:
From the http://vimeo.com/28397753 demo it seems it can do 5 million transaction per minute by in my test bed which is 4 gb machine it is taking sweet 140 seconds to insert 100 K records almost 120 times slower!
I have only one table with a integer column and only one index on that column which is not unique.
TermSize: 1024m
PermSize: 2024m
We want a scallable solution that can go upto 250 Million records in a table (and we will have two such table other will be smaller) is it possible with times ten?
Our queries will generally requst 50K results and we will have 12 fields in this table numeric and integer that we are going to separately index.
Look up also on a one integer table are taking about 100 milliseconds.
I am using a TimesTenDataSource ds = new TimesTenDataSource();
String URL = "jdbc:timesten:direct:TT_1121";
I tried doing batch inserts of 25,100,500,100 rows per insert with not much improvement.
Is oracle times ten even fit for such a case?
thanks and regards,
sumit

Answer 1

You say that your machine has 4 GB RAM but you have allocated over 3 Gb to TimesTen. That's fine if there is pretyt much nothing else running o nthe machine but if you have otjer things (such as Oracle DB maybe?) running o nthe machine at the same tiem then you are likely running low on memory. Are you seeing significant page in and pageout acticity when the test runs? If so this will seriously impact performance.
Can you please provide:
1. A description of the overall hardware and software environment that you are using for the test.
2. The exact TimesTen version (output of ttVersion) command.
3. The DSN configuration (from sys.odbc.ini)
4. The actual table (or cache group) defintiion including any indexes.
5. Details of the Java test program. In particular; are you using parameterised INSERT statements? Are you preparing them just once and executing them many times? How often do you commit during the bulk load? etc.
Thanks,
Chris