ReportServer needs a directory to store temporary files. You can define the directory to use in /filserver/etc/main/main.cf. Furthermore, you can specify a maximum lifetime (in seconds) of temporary files in the directory.
<tempdir>tempdir</tempdir> <tempfile> <lifetime>3600</lifetime> </tempfile>
ReportServer performs certain maintenance tasks from time to time. You can define the interval (in ms) with which ReportServer will execute these.
<maintenance> <tasks> <interval>600000</interval> </tasks> </maintenance>
ReportServer allows to define a timeout (in ms) for search queries:
<search> <timeout>5000</timeout> </search>