On 10/11/2012 2:12 AM, Lars Segerlund wrote: > Me thinks latest preempt-rt is preferable .... fx. there is a patch > that shaves 100 uS of the arm worstcase ... ( in the tty driver of all > places ) ... > > The biggest problem with preempt-rt is the tuning, to get good > results we should do a little eality check ... ( ie. disable all power > save , and so )
Before I went on holiday I had followed in Charles' footsteps to build preempt-rt kernels and test them on several Intel and AMD boards. The latencies I got weren't very good (although not wildly out of line with oasdl postings) and certainly not as good as Charles got with his particular boards. So far, I have been utterly unable to make any substantial difference "tuning". Does a systematic tuning process exist? So far all I have is the usual laundry list of "try this..." suggestions. Regards, Kent ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
