If no metadata is available on the kernel metadata stream when we
do a get_subbuff, the kernel returns -EPERM, the consumer was not
checking for this return code and closed the stream prematurely. It
worked if no new metadata was added during the session.
Signed-off-by: Julien Desfossez
This test detects if we actually append new metadata when enabling a
kernel event after a start.
Signed-off-by: Julien Desfossez jdesfos...@efficios.com
---
tests/regression/kernel/test_event_basic | 24 +++-
1 file changed, 23 insertions(+), 1 deletion(-)
diff --git
* Julien Desfossez (jdesfos...@efficios.com) wrote:
If no metadata is available on the kernel metadata stream when we
do a get_subbuff, the kernel returns -EPERM, the consumer was not
checking for this return code and closed the stream prematurely. It
worked if no new metadata was added during
Hi,
I did not find any snapshot handling in the lttng.h! Only create session in a
snapshot mode but nothing about taking a snapshot. Is it something that will be
added?
Cheers,
Stanislav
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* Stanislav Vovk (stanislav.v...@ericsson.com) wrote:
Hi,
I did not find any snapshot handling in the lttng.h! Only create
session in a snapshot mode but nothing about taking a snapshot. Is it
something that will be added?
Hi Stanislav,
Please have a look at include/lttng/snapshot.h for
Sorry.Missed the attachment in previous mail.Enclosed here is the console
log for the crash with lttng-modules 2.2.1.
Regards,
Sarma j
On Tue, Jul 30, 2013 at 11:08 AM, Jonnavithula Sharma
sarmaj...@gmail.comwrote:
Hi Jeremie,
We tried with the latest version(2.2.1) of lttng-modules. We
Can you open a new issue on the bug tracker? [1]
Please make sure you include your kernel version, details about your
target's architecture and the logs you posted.
Thanks,
Jérémie
[1] https://bugs.lttng.org/projects/lttng-modules
On Tue, Jul 30, 2013 at 5:39 AM, Jonnavithula Sharma
Hi
We are currently running lttng on our CPE with 64 MB RAM.We are observing a
crash after stopping the traces and even if we leave our CPE for few min
after starting the trace we are observing this crash.Please find the
attachment for the crash log.
Let us know if any one has faced this issue
Hi,
Can you try to reproduce the problem with the latest version of
lttng-modules (v2.2.1)? There were some bug fixes to the ring buffer
that may correct your problem.
Thanks for reporting,
Jérémie
On Mon, Jul 29, 2013 at 9:45 AM, Jonnavithula Sharma
sarmaj...@gmail.com wrote:
Hi
We are
Hi Jeremie,
We tried with the latest version(2.2.1) of lttng-modules. We are able to
reproduce the same crash with the same steps.
Am i missing anything here?
Regards,
Sarma J
On Mon, Jul 29, 2013 at 9:05 PM, Jérémie Galarneau
jeremie.galarn...@efficios.com wrote:
Hi,
Can you try to
The added support is basic. It create an event with no data associated to the
file path + offset
specified.
update from v1:
- Use a wrapper for uprobe
- Use a userspace pointer for the path
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
README | 5 +-
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* Brosseau, Yannick (yannick.bross...@gmail.com) wrote:
A question about the snapshot: is there a way to trigger a new state dump?
Not at this point, no.
Le 2013-07-21 14:29, Mathieu Desnoyers mathieu.desnoy...@efficios.com a
écrit :
Hi,
I just pushed a LTTng snapshot howto (new
Hi,
I just pushed a LTTng snapshot howto (new feature of lttng 2.3-rc). I'm
posting it to lttng-dev, since it provides a quick insight on how to use
the snapshot feature. Comments are welcome!
Thanks,
Mathieu
LTTng Flight Recorder Snapshot HOWTO
Mathieu Desnoyers
July 21st, 2013
This
EfficiOS Inc.
http://www.efficios.com
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* yin sun (sunyi...@gmail.com) wrote:
Hi Mathieu,
Can you explain how the snapshot record works. Is it going to dump the
whole buffer even if the same buffer is dumped before.
Yes, it is going to dump everything that is still available from the
buffer (not overwritten). If you want to grab
Hi,
I’m trying to use LTTng on Android 4.0.4 with Linux kernel version of
3.0.15.
I cross-compiled the LTTng modules and tools on my Ubuntu 12.04 machine.
First I installed all the LTTng modules using *insmod*, because there is no
*modprobe* in Android. It worked fine.
However, when I tried to
You'll want to dig into the past month's threads referring to Android on
the lttng-dev mailing list.
Some work has been done on lttng-tools to support it, but the patches
have never been cleaned up following our feedback, so it is not merged
yet.
Thanks,
Mathieu
* Cao Gao (cao...@umich.edu)
lttng-tools-2.2.0\src\bin\lttng-sessiond\trace-kernel.c, lines 190-198:
case LTTNG_EVENT_FUNCTION:
attr-instrumentation = LTTNG_KERNEL_KRETPROBE;
attr-u.kretprobe.addr = ev-attr.probe.addr;
attr-u.kretprobe.offset = ev-attr.probe.offset;
Fixed by:
commit 91b23e997053fb552662f1ad07273f029e00d2e4
Author: Mathieu Desnoyers mathieu.desnoy...@efficios.com
Date: Wed Jul 17 13:40:15 2013 -0400
Cleanup: remove redundant assignment
Signed-off-by: Mathieu Desnoyers mathieu.desnoy...@efficios.com
Thanks,
Mathieu
*
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
configure.ac | 14 +-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/configure.ac b/configure.ac
index b430152..b34e39a 100644
---
* Mathieu Desnoyers (mathieu.desnoy...@efficios.com) wrote:
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
[...]
This test (and the other for filter-lexer.c) is incorrect for VPATH
builds.
If someone grabs the tarball generated by make dist, extracts it in a
source directory, and
On 2013-07-17 14:00, Mathieu Desnoyers wrote:
* Mathieu Desnoyers (mathieu.desnoy...@efficios.com) wrote:
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
[...]
This test (and the other for filter-lexer.c) is incorrect for VPATH
builds.
If someone grabs the tarball generated by make
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
On 2013-07-17 14:00, Mathieu Desnoyers wrote:
* Mathieu Desnoyers (mathieu.desnoy...@efficios.com) wrote:
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
[...]
This test (and the other for filter-lexer.c) is incorrect for VPATH
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
configure.ac | 14 +-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/configure.ac b/configure.ac
index b430152..b34e39a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -287,7 +287,19 @@ LT_INIT
* Julien Desfossez (jdesfos...@efficios.com) wrote:
The wait_fd in the kernel consumer streams was not closed causing a leak
of FDs in the consumer and never triggering the teardown mechanism in
the kernel tracer.
Just for traceability on the ML: this patch had indeed been merged into
master
* Julien Desfossez (jdesfos...@efficios.com) wrote:
consumer_add_channel can return an error, it needs to be handled.
Also, init_kernel_tracing returns a positive lttng_error_code on error,
so the check in start_kernel_session needs to be for ret != 0.
This patch was merged into stable-2.2 and
* Julien Desfossez (jdesfos...@efficios.com) wrote:
Signed-off-by: Julien Desfossez jdesfos...@efficios.com
This patch was merged into master and stable-2.2 of lttng-tools.
---
src/common/consumer.c |3 +++
1 file changed, 3 insertions(+)
diff --git a/src/common/consumer.c
merged, thanks!
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
instrumentation/syscalls/README |2 +-
instrumentation/syscalls/lttng-syscalls-generate-headers.sh |4
2 files
merged, thanks!
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
instrumentation/syscalls/headers/syscalls_integers.h |2 +-
instrumentation/syscalls/headers/syscalls_pointers.h |2 +-
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
instrumentation/syscalls/README |2 +-
instrumentation/syscalls/lttng-syscalls-generate-headers.sh |4
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
instrumentation/syscalls/headers/syscalls_integers.h |2 +-
instrumentation/syscalls/headers/syscalls_pointers.h |2 +-
.../headers/x86-64-syscalls-3.0.4_integers_override.h |3 ---
From: Mathieu Desnoyers [mathieu.desnoy...@efficios.com]
Sent: Monday, July 01, 2013 00:20
To: Yannick Brosseau; Gabbasov, Andrew
Cc: lttng-dev@lists.lttng.org
Subject: Re: [lttng-dev] [LTTng-modules PATCH] The msg part of the
printk:console event was 1 character too long
* Yannick
Hi David
I have a follow-up question for Simon's second questions:
Initially, when reading the release notes I had the impression that only
the switch-timer for periodic flush can be configured for the metadata
channel. Then I tried to configure the read-timer, num-subbuf and
subbuf-size for
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* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
On 2013-06-28 15:43, Mathieu Desnoyers wrote:
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
instrumentation/events/lttng-module/printk.h |2 +-
1 file
Merged!
Yannick Brosseau:
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
configure.ac |4
1 file changed, 4 insertions(+)
diff --git a/configure.ac b/configure.ac
index 792679a..36c4ae1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -162,6 +162,10 @@
Merged!
Julien Desfossez:
The registry indexing for per-pid sessions is done with a per-pid session id.
So for per-pid buffers, we need to send the per-pid session id as well as the
global session id to the consumer in order to give it enough information if it
needs to request metadata later.
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
instrumentation/events/lttng-module/printk.h |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/instrumentation/events/lttng-module/printk.h
b/instrumentation/events/lttng-module/printk.h
index 4c744f9..f4b6028
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
instrumentation/events/lttng-module/printk.h | 26 ++
1 file changed, 26 insertions(+)
diff --git a/instrumentation/events/lttng-module/printk.h
b/instrumentation/events/lttng-module/printk.h
index
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
instrumentation/events/lttng-module/printk.h |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/instrumentation/events/lttng-module/printk.h
On 2013-06-28 15:43, Mathieu Desnoyers wrote:
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
instrumentation/events/lttng-module/printk.h |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git
CCing lttng-dev mailing list.
Simon Delisle:
Hi,
I work with the tracing team at Ericsson and I actually work on the lttng 2.2
support in TMF, but I have two questions about the new feature.
1) Does the periodical metadata flush is only for UST or it work for kernel
to ?
Both.
2) What
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Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
configure.ac |4
1 file changed, 4 insertions(+)
diff --git a/configure.ac b/configure.ac
index 792679a..36c4ae1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -162,6 +162,10 @@ AC_CHECK_DECL([rcu_thread_online], [],
The registry indexing for per-pid sessions is done with a per-pid session id.
So for per-pid buffers, we need to send the per-pid session id as well as the
global session id to the consumer in order to give it enough information if it
needs to request metadata later.
This patch adds the
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
.../syscalls/lttng-syscalls-extractor/lttng-syscalls-extractor.c |1 +
1 file changed, 1 insertion(+)
diff --git
a/instrumentation/syscalls/lttng-syscalls-extractor/lttng-syscalls-extractor.c
merged into master,
Thanks,
Mathieu
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
.../syscalls/lttng-syscalls-extractor/lttng-syscalls-extractor.c |1
+
1 file changed, 1 insertion(+)
diff --git
The #include directive won't be parsed, but will be copied to the
generated .h files.
Also add a verbose (-v) mode to display some debugging output
Signed-off-by: Yannick Brosseau yannick.bross...@gmail.com
---
tools/lttng-gen-tp | 19 +++
1 file changed, 15 insertions(+), 4
merged into master and stable-2.2.
Thanks,
Mathieu
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
The #include directive won't be parsed, but will be copied to the
generated .h files.
Also add a verbose (-v) mode to display some debugging output
Signed-off-by: Yannick Brosseau
* Yannick Brosseau (yannick.bross...@gmail.com) wrote:
Now, the include guard will be generated with all the non
alpha-numeric characters replace with an '_'
merged in:
- master
- stable 2.2, 2.1, 2.0.
I also merged that commit into stable-2.0 so the current commit applies:
commit
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Hi,
Here is a small blog entry on how to install lttng on Fedora 19 beta.
http://multivax.blogspot.ca/2013/06/how-to-setup-lttng-on-fedora-19.html
There is an issue: lttng-modules 2.2.0-rc2 is required for compatibility
reasons with linux kernel 3.9.4, but packages of lttng-tools and lttng-ust
I don't know. I tried with kernel 3.2.30 and didn't get any problems.
Da
On Mon, Jun 3, 2013 at 10:05 PM, Jérémie Galarneau
jeremie.galarn...@efficios.com wrote:
Hi Zeng,
Just tried the 2.0 release on a Ubuntu-12.04 VM and I could not
reproduce your problem. Any chance you have installed
On Thu, May 30, 2013 at 12:32 PM, Zheng Da zhengda1...@gmail.com wrote:
Hello,
I just started to use lttng. I use Ubuntu 12.04 and the kernel version
3.8.12. I use a customized kernel, so the lttng package in ubuntu
can't be installed correctly. I built lttng 2.0 myself.
Did you build only
Hello,
I built lttng-modules-2.0.6, lttng-tools-2.0.5 and lttng-ust-2.0.6.
Best,
Da
On Thu, May 30, 2013 at 1:14 PM, Jérémie Galarneau
jeremie.galarn...@efficios.com wrote:
On Thu, May 30, 2013 at 12:32 PM, Zheng Da zhengda1...@gmail.com wrote:
Hello,
I just started to use lttng. I use
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.
Would be great if you will give me a tutorial about how to
do it.
Ionut
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me a tutorial about how to do it.
Ionut
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that I am trying to build lttng 2.x on ICS 4.0.3.
Would be great if you will give me a tutorial about how to do it.
Ionut
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a tutorial about how to do it.
Ionut
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http
it.
Ionut
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http
The wait_fd in the kernel consumer streams was not closed causing a leak
of FDs in the consumer and never triggering the teardown mechanism in
the kernel tracer.
Signed-off-by: Julien Desfossez jdesfos...@efficios.com
---
src/common/consumer.c |4
1 file changed, 4 insertions(+)
diff
consumer_add_channel can return an error, it needs to be handled.
Also, init_kernel_tracing returns a positive lttng_error_code on error,
so the check in start_kernel_session needs to be for ret != 0.
Signed-off-by: Julien Desfossez jdesfos...@efficios.com
---
src/bin/lttng-sessiond/cmd.c
Signed-off-by: Julien Desfossez jdesfos...@efficios.com
---
src/common/consumer.c |3 +++
1 file changed, 3 insertions(+)
diff --git a/src/common/consumer.c b/src/common/consumer.c
index c9e4bae..bfb809a 100644
--- a/src/common/consumer.c
+++ b/src/common/consumer.c
@@ -663,6 +663,9 @@
* Julien Desfossez (jdesfos...@efficios.com) wrote:
Signed-off-by: Julien Desfossez jdesfos...@efficios.com
check the impact on the ust side ?
---
src/common/consumer.c |3 +++
1 file changed, 3 insertions(+)
diff --git a/src/common/consumer.c b/src/common/consumer.c
index
Signed-off-by: Julien Desfossez jdesfos...@efficios.com
---
src/common/kernel-consumer/kernel-consumer.c |6 ++
1 file changed, 6 insertions(+)
diff --git a/src/common/kernel-consumer/kernel-consumer.c
b/src/common/kernel-consumer/kernel-consumer.c
index f3a3a22..f47c498 100644
---
to do it.
Ionut
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Le 2013-05-17 01:32, Ionut D. a écrit :
Hello all,
Recently I started to integrate LTTNG in Android ICS by compiling each
package, each dependency, by using the Android build system. It is a
lot of work because I met different problems and to be sincere, I do
not know if at the end will work
2.x on ICS 4.0.3.
Would be great if you will give me a tutorial about how to do it.
Ionut
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* Thibault, Daniel (daniel.thiba...@drdc-rddc.gc.ca) wrote:
-Message d'origine-
From: Mathieu Desnoyers mathieu.desnoy...@efficios.com
I having similar questions as Daniel about tracefile-size and
tracefile-count.
For each stream, do we have max size used on disk = size *
* Thibault, Daniel (daniel.thiba...@drdc-rddc.gc.ca) wrote:
[...]
On a somewhat related topic, I find the CTF (1.8.2) spec confusing
in sections 5 and 6:
5. Event Packet Header
The event packet header consists of two parts: the event packet header
is the same for all streams of
Message: 1
Date: Fri, 3 May 2013 10:42:22 -0400
There are now two tracing modes implemented in lttng-ust (user-space tracer),
each with their own advantages (+)/disadvantages(-):
1) per-pid buffer tracing,
[...]
2) per-uid (shared) buffer tracing, (buffers shared across applications
Let's assume I want to do a kernel-only LTTng installation. After putting
lttng-modules in place, I get lttng-tools and, at its configure step, I do:
./configure --disable-lttng-ust
However, this fails with:
checking whether cds_list_add is declared... no
configure: error: liburcu =
Yes it is. URCU is used extensively in lttng-tools regardless of UST
tracing or not.
David
Thibault, Daniel:
Let’s assume I want to do a kernel-only LTTng installation. After
putting lttng-modules in place, I get lttng-tools and, at its configure
step, I do:
./configure
* Arulraj, Dhiliphen IN BLR STS (dhiliphen.arul...@siemens.com) wrote:
Hello ,
I am new to LTTng usage. When trying to run lttng 2.0.4 for tracing my kernel
I get the following issue -
root@am335x-evm:/media/mmcblk0p1/lttng_bin/bin#
./arm-arago-linux-gnueabi-lttng start
[ 1775.934997]
* David OShea (david.os...@quantum.com) wrote:
Hi all,
Are any details available of the memory requirements for LTTng?
I guess you'll have to measure this.
One important point to consider is the memory requirements for trace
buffers, which are user-configurable.
Thanks,
Mathieu
I'm
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Absolutely: no patching required.
I decided to find out if the lttng-modules were required at all if one needs
to do only user-space tracing.
I installed (on an otherwise lttng-virgin system) just the userspace-rcu,
lttng-ust, and lttng-tools packages. The lttng commands fail for the
Hi Daniel,
The kernel modules are indeed not needed for userspace tracing.
I'm guessing you installed from source since the lttng libs don't seem
present in your path. Could tell us on which revision this is
happening?
Also, perhaps you could try Mathieu's recently commited fix? It may be
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Hi,
I want to use LTTng for system call tracing on ARM. Now lttng-modules seems
to support system call tracing on ARM already since
8f4f80e LTTng Modules ARM syscall instrumentation.
But I wonder how that worked since lttng-syscalls.c is only build under
CONFIG_HAVE_SYSCALL_TRACEPOINTS and that
tracing working on ARM with the
upstream
LTTng version?
thanks,
Jan
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? Is system call tracing working on ARM with the
upstream
LTTng version?
thanks,
Jan
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Mathieu Desnoyers
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On 3 April 2013 12:49, Christian Babeux christian.bab...@efficios.com wrote:
I would advocate for this option. Could you describe the issues you
encountered using subdirs-objects?
Let's try to add
AUTOMAKE_OPTIONS = subdir-objects
at the top of tests/unit/Makefile.am. ./bootstrap and
On 3 April 2013 14:28, Simon Marchi simon.mar...@polymtl.ca wrote:
Finally, an idea just like that: instead of specifying the source
file, would it be possible to specify directly the object file (e.g.
$(top_srcdir)/src/bin/lttng/utils.o or ../../src/bin/lttng/utils.o) in
LDADD ? So the unit
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