Hi, I have patched a 3.2 kernel for a OMAP compatible processor (ARM Cortex A8) to be used on an Gumstix Overo with the CONFIG_PREEMPT_RT patch. I have noticed that the latency of the patched kernel on this platform is <300usec (using cyclictest), similar to what is reported for the ARM9 platforms at https://rt.wiki.kernel.org/index.php/CONFIG_PREEMPT_RT_Patch Is this the best performance that can be expected from ARM7/9 platforms? Could it be improved by using different kernel config settings - e.g. CONFIG_LATENCY_TRACE=n - https://rt.wiki.kernel.org/index.php/Cyclictest mentions that latency tracing adds significant kernel overhead? -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
