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From "Clive Borrageiro" <cli...@cibecs.com>
Subject Working set memory usage
Date Tue, 08 Aug 2006 10:34:28 GMT

When I use derby as an embedded database that contains a large amount of
records (in excess of 100,000), the Working set memory (as seen under
Windows Task Manager > Mem Usage) of the application's process grows with
time & usage.

I created a simple test application that inserts 100,000 records into a
table, then retrieves these and updates each record individually. At the end
of this process the Working set memory displays a value of around 160MB.
I have profiled the application but the maximum java heap memory used is

I also tried running the same process using the database through a network
server; the test application's Working set memory displayed a maximum value
of 17.5MB (java heap around 1MB) but the process running the network server
climbed to 60MB (Working set).

What causes this Working set memory to rise?

Thank you,

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