2012/3/29 Jeshua Lacock <[email protected]>: > > Hi, > > I am not sure to use the 1.0ms or 25us figure. Can anyone shed some light on > which jitter number I would use for the latency test?
Based on the wording You used: "which jitter number I would use for the latency test", I am not sure that I understand, what exactly You mean. 1) If You mean: which jitter number from latency test results to take into account? 25us figure represents jitter in base thread. 1ms figure represents jitter in servo thread. Which figure to use? It depends... Will You run anything in base thread (like Erik mentioned - software step generation is one of the tasks for base thread) or will everything be done in servo thread? 2) If You mean: which number to take for the latency number to run? IMHO, the question is not valid, You cannot put Your own numbers there, You simply should open latency test and press "run" (or something like that, I do not remember correctly) and then, with that test window in background, press "f2" and type "glxgears" - a small window with 2 rotating gears should open. Its purpose is to create a load for CPU. You could also open firefox and do whatever You can to load the PC. It is recommended to run latency period longer than a minute or two, so that the max jitter that will be catched would really represent the worst-case situation. Viesturs ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
