This patch adds a triggering mechanism so that traces are read from the kernel ring buffer only on SIGUSR1. In this way, we can detect an "interesting" event (slow, etc) and then dump the most recent traces which should hopefully be related to that event. The number of traces can be controlled by the buffer size and number parameters. Please CC me on replies. Thanks, David Sharp -- To unsubscribe from this list: send the line "unsubscribe linux-btrace" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html