Hi Kienan,
Thank you very much !
Zvika
On Mon, Apr 15, 2024 at 9:25 PM Kienan Stewart via lttng-dev <
lttng-dev@lists.lttng.org> wrote:
> Hi Zvika,
>
> with a session that has kernel events enabled, I think you could use the
> sched_switch event.
>
> thanks,
> kienan
Hello,
My user space process contains 2 threads:
First thread is blocked upon a kernel event created by a hardware interrupt
handled by the kernel.
The thread is sending ioctl which is blocked till this interrupt occurs.
Second thread has just a 5msec sleep. It does something and then sleeps fo
t;
> thanks,
> kienan
>
>
> On 4/4/24 4:08 PM, Zvi Vered via lttng-dev wrote:
> > Hello,
> >
> > I'm required to analyze an lttng trace with Babeltrace2 python API.
> > The host is running windows 10.
> > But according to : https://babeltrace.org/#bt2-ge
Hello,
I'm required to analyze an lttng trace with Babeltrace2 python API.
The host is running windows 10.
But according to : https://babeltrace.org/#bt2-get
Windows is not mentioned at all.
I prefer python but I can also consider using the C library for windows.
Thank you,
Zvika
__
Hi Erica,
Thank you very much for your answer.
Can you please tell what is the added value of ftrace (compared to using
only lttng) ?
Best regards,
Zvika
On Tue, Apr 2, 2024 at 5:11 PM Erica Bugden wrote:
> Hello Zvika,
>
> On 2024-03-29 01:09, Zvi Vered via lttng-dev wrot
epending on how the build was configured.
>
> thanks,
> kienan
>
> [1]: https://lttng.org/docs/v2.13/#doc-lttng-modules
>
>
> On 3/30/24 10:52 PM, Zvi Vered via lttng-dev wrote:
> > Hello,
> >
> > For some reason, I failed to integrate v13.9 into buildroot 20
Hello,
For some reason, I failed to integrate v13.9 into buildroot 2023.02.2
But I compiled all modules with the my kernel source: 5.4.249
Can you please tell what is the right order of *insmod *for the kernel
modules ?
All I need is to record IRQ events and user space events.
Thank you,
Zvika
ith lttng (maybe even just
> tracecompass) or perfetto to get that kind of trace
>
>
> https://archive.eclipse.org/tracecompass.incubator/doc/org.eclipse.tracecompass.incubator.ftrace.doc.user/User-Guide.html
>
> or
>
> https://ui.perfetto.dev/
>
> On Wed, Mar 27, 2024, at
Hello,
I have an application with 4 threads.
I'm required to display on the graph when thread starts working till it
blocks for the next semaphore.
But without using the lttng userspace library.
Is it possible ?
Thank you,
Zvika
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mjeanson/gcloud-lttng/blob/master/pods/demo1.yaml.in
>
> In a scenario with multiple sessionds (eg. one per container), the
> traces could be combined in post using babeltrace.
>
> thanks,
> kienan
>
>
> On 3/2/24 12:31 AM, Zvi Vered via lttng-dev wrote:
> > Hell
Hello,
I have an application working with multiple dockers.
Each docker is a fedora O.S running an application.
The host is centos 8.5. This host will be upgraded to RHEL 9.2 in the near
future.
Is it possible that all traces from multiple dockers will all be written to
one metadata ?
versions:
l
Hi Jonathan,
Thank you very much !
Best regards,
Zvika
On Fri, Jul 19, 2019 at 11:48 PM Jonathan Rajotte-Julien <
jonathan.rajotte-jul...@efficios.com> wrote:
> Hi Zvi,
>
> On Fri, Jul 19, 2019 at 05:28:48PM +0300, Zvi Vered wrote:
> > Hello,
> >
> > Using
Hello,
Using babeltrace I created a text trace.
How can I understand it ?
For example:
I logged userspace events. One of my threads is called: RSPOn3
I can see the following lines:
sched_switch: { cpu_id = 0 }, { prev_comm = "RSPOn3", prev_tid = 27307,
prev_prio = -58, prev_state = 1, next_comm
Hello,
I converted CTF files created by ltt-ng to text file using babeltrace.
Can you please tell how semaphore, mutex are logged in this text file ?
I did not find the terms "sema" or "mutex".
Thank you,
Zvika
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Hello,
Under ubuntu 16.04 I ran:
sudo apt-get install babeltrace
This installed babeltrace which is working OK.
Can I use also the python version ?
The goal: Use the python version "as is" under windows.
Thank you,
Zvika
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Hi Jonathan,
I need a windows library (+ sample code that uses it) that can read events
from a pre-recorded CTF file created by ltt-ng (metadata, channels)
I think (not sure) that compiling babeltrace (e.g 1.5.23) with Mingw is not
simple.
As a start, the bootstrap, cannot run under windows.
Than
Jun 12, 2019 at 11:22 PM Zvi Vered wrote:
> >
> > Hello,
> >
> > I'm trying to read the file "metadata".
> > I read the struct:
> >
> > struct metadata_packet_header {
> > uint32_t magic; /* 0x75D11D57 */
> > uint8_t uuid[16];
Hello,
I'm trying to read the file "metadata".
I read the struct:
struct metadata_packet_header {
uint32_t magic; /* 0x75D11D57 */
uint8_t uuid[16]; /* Unique Universal Identifier */
uint32_t checksum; /* 0 if unused */
uint32_t content_size; /* in bits */
uint32_t packet_size; /* in bits */
uin
Hi Jonathan, All,
If I build babeltrace (1.5) on cygwin, can I use the libraries under native
windows ?
Thank you,
Zvika
On Tue, May 21, 2019 at 5:48 PM Jonathan Rajotte-Julien <
jonathan.rajotte-jul...@efficios.com> wrote:
> Hi,
>
> On Mon, May 20, 2019 at 10:49:49PM -0700,
Hello,
I downloaded babeltrace from git using:
git clone git://git.efficios.com/babeltrace.git
Where can I find a sample code that reads a CTF file ?
Thank you,
Zvika
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lttng-dev@lists.lttng.org
https://lists.lttng.org/cgi-bin/
@efficios.com> wrote:
> Hi,
>
> On Mon, May 20, 2019 at 10:49:49PM -0700, Zvi Vered wrote:
> > Hello,
> >
> > I'm looking for a windows library that can read a trace ?
>
> Babeltrace 1.5 can be build on cygwin.
>
> > Or - detailed instructions on
Hello,
I'm looking for a windows library that can read a trace ?
Or - detailed instructions on the structure of each file in the trace.
Can you please advise ?
Thank you,
Zvika
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https://lists.lttng.or
>
> On Fri, May 17, 2019 at 04:50:02AM +0300, Zvi Vered wrote:
> > Hi Janathan, All,
> >
> > I solved the path issue with
> >
> > export LTTNG_CONSUMERD32_BIN=/lib/lttng/libexec
> > export LTTNG_CONSUMERD32_LIBDIR =/lib
> > export LTTNG_SESSION_CO
Hello,
Can I use lttng to monitor threads in my process ?
For example, I want to see when a thread is active and when it is blocked
(waiting for a signal or an IOCL to complete).
Is it possible doing it without linking the application with libust and
calling UST API ?
Thank you,
Zvika
__
Hi Jonathan,
I'm not using buildroot nor Yokto.
In order to build lttng-tools I ran:
./configure --prefix=/64_sw/git/zvi_vered/MY_PROJ/linux4.9.20/boot/rootfs
make
make install
This path contains a complete root file system (based on busybox) that is
later copied to my target.
On the target I ra
Hello,
I ran the following command on the target (where my kernel is running):
~ # ./lttng create my-kernel-session --output=/tmp/my-kernel-trace
and then:
~ # ./lttng enable-event --kernel --syscall open,close
and got:
Error: Spawning consumerd failed
Error: Event open: Kernel consumer star
Thank you.
Z.V
On Dec 3, 2015 9:21 AM, "Mathieu Desnoyers"
wrote:
> - On Dec 3, 2015, at 4:20 AM, Zvi Vered vered...@gmail.com wrote:
>
> > Hello,
> >
> > I'm tried to compile lttng-modules:
> >
> > more /proc/version:
> >
Hello,
I'm tried to compile lttng-modules:
more /proc/version:
Linux version 2.6.32-279.el6.x86_64
(mockbu...@c6b9.bsys.dev.centos.org) (gcc version 4.4.6 20120305 (Red
Hat 4.4.6-4) (GCC) )
#1 SMP Fri Jun 22 12:19:21 UTC 2012
yum install kernel-headers
cd lttng-modules-2.7.0
make
and got:
LTTN
clearly not supported. You will need to upgrade your compiler.
>
> Thanks,
>
> Mathieu
>
> - On Nov 28, 2015, at 11:13 PM, Zvi Vered vered...@gmail.com wrote:
>
>> Hi Jonathan,
>>
>> I tried compiling lttng-ust-2.7.1 and got the same compilation error.
>
(modules/ust/tools) is not officially supported (actively
> developed) anymore. I highly encourage you to move towards lttng 2.7 tool
> set unless you have very specific requirements.
>
> Cheers!
>
>
> On Thu, Nov 26, 2015 at 11:20 PM, Zvi Vered wrote:
>
>> Hello,
>&
Hello,
I downloaded lttng-ust-2.4.4 extracted it and ran ./configure
Then I ran make.
I got the following error:
CC lttng-filter-specialize.lo
CC lttng-filter-interpreter.lo
CC lttng-ust-baddr.lo
In file included from ../include/lttng/ust-tracepoint-event.h:724,
Hello,
I downloaded lttng-tools-2.7.0 and tried to run ./configure.
I got the error message:
checking for xml2-config... /home/zvivered/GNU/libxml2/release/bin/xml2-config
checking for libxml - version >= 2.7.6... yes (version 2.7.7)
checking for uuid_generate in -luuid... no
checking for u
Hello,
I downloaded the file lttng-ust-2.0.8.tar.bz2, extracted it and the ran:
./configure
make
After a while I got the following compilcation error:
CC ltt-probes.lo
CC lttng-probe-ust.lo
In file included from ../include/lttng/ust-tracepoint-event.h:506,
from ../in
Hello,
I’m using vanilla 3.4.7 on an Intel's Ivy-Bridge PC104.
The application (compiled and built with intel compiler) contains 8 threads.
My goal it to use “LTTng Project” to display all threads on a graph.
Each thread will have its own “line” and I will be able to see when the CPU
is idle
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