Re: [lttng-dev] [rp] [RFC] Readiness for URCU release with RCU lock-free hash table

2012-05-04 Thread Mathieu Desnoyers
* Paul E. McKenney (paul...@linux.vnet.ibm.com) wrote: On Thu, May 03, 2012 at 01:13:30PM -0400, Mathieu Desnoyers wrote: * Paul E. McKenney (paul...@linux.vnet.ibm.com) wrote: [...] A write barrier would be sufficient in the case where there were only two threads observing each

Re: [lttng-dev] [rp] [RFC] Readiness for URCU release with RCU lock-free hash table

2012-05-04 Thread Paul E. McKenney
On Fri, May 04, 2012 at 12:53:12PM -0400, Mathieu Desnoyers wrote: * Paul E. McKenney (paul...@linux.vnet.ibm.com) wrote: On Thu, May 03, 2012 at 01:13:30PM -0400, Mathieu Desnoyers wrote: * Paul E. McKenney (paul...@linux.vnet.ibm.com) wrote: [...] A write barrier would be

Re: [lttng-dev] beginner question

2012-05-04 Thread Alexandre Montplaisir
On 12-05-05 12:14 AM, Loris Degioanni wrote: I just installed the lttng package on a fresh Ubuntu 12 machine, and I'm following the tutorial at http://lttng.org/quickstart. The enable-event step fails with this error: # lttng enable-event sched_switch,sys_open -k kernel event sched_switch

Re: [lttng-dev] beginner question

2012-05-04 Thread Julien Desfossez
Hi, On 05/05/12 12:14 AM, Loris Degioanni wrote: I just installed the lttng package on a fresh Ubuntu 12 machine, and I'm following the tutorial at http://lttng.org/quickstart. The enable-event step fails with this error: # lttng enable-event sched_switch,sys_open -k kernel event

Re: [lttng-dev] beginner question

2012-05-04 Thread Alexandre Montplaisir
On 12-05-05 12:42 AM, Julien Desfossez wrote: Hi, On 05/05/12 12:14 AM, Loris Degioanni wrote: I just installed the lttng package on a fresh Ubuntu 12 machine, and I'm following the tutorial at http://lttng.org/quickstart. The enable-event step fails with this error: # lttng enable-event

[lttng-dev] lttng enable-channel options

2012-05-04 Thread Woegerer, Paul
Is there some way to make the userspace application block if the buffer is full ? I'm thinking about something like: lttng enable-channel myblockingchannel --block I know I can increase the subbuf-size but sometimes this is not an option (embedded targets with less RAM). --block would be a

[lttng-dev] Lttng support for RT-Patched Linux Kernel 2.6.33

2012-05-04 Thread Pavan Anumula
Hi , I want to use LTTng on ARM processor running Linux 2.6.33 kernel with real-time patches, My quires are whether there's an LTTng port which is compatible with an RT patched Kernel, If not what's required to make it RT Patch compatible. Please kindly help me on this. Thanks In Advance,

Re: [lttng-dev] beginner question

2012-05-04 Thread Loris Degioanni
First of all, that worked. Thank you. So let's suppose I only want to track a handful of system calls, what's the most efficient way to filter out everything else? Loris On 5/4/2012 9:42 PM, Julien Desfossez wrote: Hi, On 05/05/12 12:14 AM, Loris Degioanni wrote: I just installed the

Re: [lttng-dev] Lttng support for RT-Patched Linux Kernel 2.6.33

2012-05-04 Thread Rapha?l Beamonte
Hi Pavan, Hi , I want to use LTTng on ARM processor running *Linux 2.6.33 kernel with real-time patches, **My quires are** * whether there’s an LTTng port which is compatible with an RT patched Kernel, If not what’s required to make it RT Patch compatible. Please kindly help me on this.

Re: [lttng-dev] beginner question

2012-05-04 Thread Julien Desfossez
First of all, that worked. Thank you. So let's suppose I only want to track a handful of system calls, what's the most efficient way to filter out everything else? You can't filter at the source for now, you need to trace all system calls, so your filtering will be done at analysis time. If