On Tue, 2013-06-04 at 16:45 -0700, Linda Walsh wrote:
Do you know if your disc is writing continuously while you execute, or do you get disk-i/o only ever 30 minutes? ;-)
The disks are accessed every few seconds.
Well, there ya go -- if you wanted, you could put those extra cpu's to work doing encoding and have 1 process that handles writing to disk.
The compression speed is not the issue. The app buffers 50 raw images from each camera (each managed in a separate thread). During normal use, the compression thread is completing compression of the image before then next arrives. Occasionally, the compression takes longer, which is expected and is why the images are buffered. Things like process scheduling and occasional disk flushes are expected. When the expected delays happen (a couple hundred extra milliseconds compressing/writing out an image), the buffer gets like two or five deep. But it immediately recovers. These new delays of five or more seconds during a single compress cause the buffer to fill. I have increased the buffer depth (a circular list), but this causes other problems (memory being one of them). I want to get to the cause of the delay. Hopefully I can correct it. If not then I want to understand it so I have confidence that any corrective actions are the correct ones and can be expected to work. If we send a measurement system to some other country (this new prototype is mysteriously being tested in production on autobahns in Germany), I need to know the collected images are as expected. Re-measurement is a very costly process. With summer road repairs in full swing, sometimes re-measurement is not possible. As an aside, maybe if a system passes SUSE offices someone may be interested seeing what I think is a novel use of openSUSE. Yours sincerely, Roger Oberholtzer Ramböll RST / Systems Office: Int +46 10-615 60 20 Mobile: Int +46 70-815 1696 roger.oberholtzer@ramboll.se ________________________________________ Ramböll Sverige AB Krukmakargatan 21 P.O. Box 17009 SE-104 62 Stockholm, Sweden www.rambollrst.se -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org