I start manually jenkins using a bat file this way:

cd C:\Program Files (x86)\Jenkins
start /LOW java -jar jenkins.war

after a day I see that java process takes 2BG of ram. I don't do much with jenkins, all it does it tries two svn repos every minute for updates and runs my script that does the update/revert/build.

If I go to installed plugins tab I see these plugins with "uninstall" button. I assume that these were installed by me, right?

build-name-setter
GIT client plugin
GIT plugin
instant-messaging plugin
MapDB API Plugin
SCM API Plugin
Skype notifier plugin
Token Macro Plugin