Re: [PATCH 0/2] Markers Implementation for RCU Tracing - Ver II

2008-02-18 Thread Jan Kiszka
K. Prasad wrote: Hi Ingo, Please accept these patches into the rt tree which convert the existing RCU tracing mechanism for Preempt RCU and RCU Boost into markers. These patches are based upon the 2.6.24-rc5-rt1 kernel tree. Along with marker transition, the RCU Tracing

Re: [PATCH 0/2] Markers Implementation for RCU Tracing - Ver II

2008-02-18 Thread Jan Kiszka
K. Prasad wrote: Hi Ingo, Please accept these patches into the rt tree which convert the existing RCU tracing mechanism for Preempt RCU and RCU Boost into markers. These patches are based upon the 2.6.24-rc5-rt1 kernel tree. Along with marker transition, the RCU Tracing

sched_yield() needed for pthread_cond_signal(..) to work?

2008-02-18 Thread Nelson Castillo
Hi. I'm using 2.6.23.14-rt14 on a i586 and I'm quite happy with the current results [1]. I'm writing because I have a problem with a source code that I thought should work. http://svn.arhuaco.org/svn/src/junk/trunk/threads/cond-signal-test.c In a PC (Debian 2.6.24 686 with no RT patches) it

Re: sched_yield() needed for pthread_cond_signal(..) to work?

2008-02-18 Thread Luis Claudio R. Goncalves
Hi! RT + sched_yield() are not really good friends... sched_yield() messes the work of the scheduler. Along with it, sched_tield() behaves in a different way under CFS. To get the old behavior you have to: echo 1 /proc/sys/kernel/sched_compat_yield Luis On Mon, Feb 18, 2008 at

Re: cyclictest?

2008-02-18 Thread Dominique Michel
Le Thu, 10 Jan 2008 16:50:06 -0800, Mark Knecht [EMAIL PROTECTED] a écrit : On Jan 10, 2008 4:34 PM, Mark Knecht [EMAIL PROTECTED] wrote: Hi, I hadn't heard of cyclictest before an email today. I guess as a user instead of a developer I don't pay much attention. Can someone point

Re: [PATCH 0/2] Markers Implementation for RCU Tracing - Ver II

2008-02-18 Thread Paul E. McKenney
On Mon, Feb 18, 2008 at 01:47:31PM +0100, Jan Kiszka wrote: K. Prasad wrote: Hi Ingo, Please accept these patches into the rt tree which convert the existing RCU tracing mechanism for Preempt RCU and RCU Boost into markers. These patches are based upon the 2.6.24-rc5-rt1 kernel

Re: sched_yield() needed for pthread_cond_signal(..) to work?

2008-02-18 Thread Nelson Castillo
On Feb 18, 2008 1:25 PM, Luis Claudio R. Goncalves [EMAIL PROTECTED] wrote: Hi! Hi Luis, thanks for the reply. RT + sched_yield() are not really good friends... sched_yield() messes the work of the scheduler. Along with it, sched_tield() behaves in a different way under CFS. To get the old

Re: sched_yield() needed for pthread_cond_signal(..) to work?

2008-02-18 Thread Nelson Castillo
On Feb 18, 2008 7:51 PM, [EMAIL PROTECTED] wrote: Sorry for top-posting. This looks a lot like LTP code, which is full of similar assumptions Note also that in RT above RT prio 50 signals don't get delivered, and a program waiting for a signal can lock the machine. Sent via BlackBerry by