Good catch, that was most definitely a space leak in pool. I've uploaded version 0.0.1.1, would you mind testing? Thanks, Michael On Thu, Mar 31, 2011 at 2:52 AM, Ertugrul Soeylemez wrote:

Hello Michael, hello fellow Haskellers,

there seems to be a space leak in either 'pool', 'persistent' or 'persistent-sqlite'.  From the behaviour I suspect the bug to be in 'pool'.  When I run a transaction in an infinite loop, my program keeps eating more and more memory, even if the transaction itself doesn't do anything:

   forever $ runSqlPool (return ()) pool

This doesn't happen for non-pooled connections, i.e. the following code runs in constant space as expected:

   forever $ runSqlConn (return ()) conn

Versions are pool-0.0.1, persistent-0.4.2, persistent-sqlite-0.4.0.  It happens for both file and in-memory databases.

Greets, Ertugrul

-- nightmare = unsafePerformIO (getWrongWife >>= sex) http://ertes.de/

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