Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!mcsun!hafro!isgate!krafla!valdi From: valdi@rhi.hi.is (Thorvaldur Sigurdsson) Newsgroups: comp.windows.x Subject: X performance drop Keywords: plock Message-ID: <1184@krafla.rhi.hi.is> Date: 6 Oct 89 15:02:42 GMT Organization: University of Iceland Lines: 35 Reykjavik, Okt. 6, 1989 We are developing a Vessel Tracking System that is to be run 24 hours a day. The ships are polled every 5 minutes. The performance of the programs, e.g. menuselecting, redrawing a map on an expose event, drops dramatically when the workstation has been left untouched for some hours. Can anyone explain this effect ? I was wondering whether this was due to the structure of the UNIX OS, that is to say whether the program or the X server has been swapped more or less to the hard disks. The VTS programs are the only ones running on the workstation besides the OS. Would it make a difference to make the procedure nice -10 ? Is this a result of a drop in performance on behalf of the X-Server (server - client protocol) or something else ? I have been concidering the usage of the plock command (see man plock) as in: #include main() { plock(PROCLOCK); } x11start One would have to run this little program here above that does this before one starts the X-Server or what ? We have a HP9000/360 with 8MB RAM, HP-UX 6.5 and HPX11R1 (A.01) Revision 9.1. ________________________________________________________________________ Thorvaldur Egill Sigurdsson | Internet: valdi@kerfi.hi.is Engineering Research Institute | ...mcvax!hafro!krafla!kerfi.hi.is!valdi University of ICELAND | Phone: 354-1-694699 Hjardarhagi 2-6 107 Reykjavik, ICELAND ------------------------------------------------------------------------