Hi folks, thanks for all suggestions. I'll try with lock validation and see if I could come with more details. Thanks, Maksym. On 14 June 2010 13:27, Sven-Thorsten Dietrich <thebigcorporation@xxxxxxxxx> wrote: > On Mon, 2010-06-14 at 13:05 +0200, John Kacur wrote: >> >> On Mon, 14 Jun 2010, Sujit K M wrote: >> >> > > CONFIG_PREEMPT_RCU=y > %< >> His problem is not with the config. >> -- > > Nope - the config is just fine. > > Turn on the lock validator and > recompile the Kernel. > > Then repeat the test that produced the latency spike. > > If that doesn't produce any locking issues, > turn on latency tracing and repeat. > >> 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 > > > -- 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