* [lttng-dev] Help needed: No UST events recorded
@ 2020-08-03 9:35 PFLANZER Moritz via lttng-dev
2020-08-03 15:31 ` Jonathan Rajotte-Julien via lttng-dev
0 siblings, 1 reply; 5+ messages in thread
From: PFLANZER Moritz via lttng-dev @ 2020-08-03 9:35 UTC (permalink / raw)
To: lttng-dev
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Hi all!
I'm struggling to get userspace tracing working on an aarch64 platform (busybox on top of Linux 5.4.24 kernel). I followed the guidelines in the docs and am currently using this example program for testing: https://github.com/lttng/lttng-ust/tree/master/doc/examples/hello-static-lib
I cross-compiled lttng-ust and that example, but when I run the following commands on the platform no traces are recorded. If I use the same example on my x86 machine everything works as expected. (And kernelspace tracing is working on that aarch64 system.)
Any hints where I could start investigating the issue are welcome.
Regards,
Moritz
~ # pwd
/root
~ # lttng create
Spawning a session daemon
Session auto-20200720-174509 created.
Traces will be written in /root/lttng-traces/auto-20200720-174509
~ # lttng enable-event -au
All UST events are enabled in channel channel0
~ # lttng start
Tracing started for session auto-20200720-174509
~ # ./hello
Hello, World!
Tracing... done.
~ # lttng destroy
Session auto-20200720-174509 destroyed
~ # ll
total 40
-rwxr-xr-x 1 root root 39280 Jul 20 17:44 hello*
Moritz Pflanzer
Software Development Engineer
[cid:image001.png@01D3BF6E.185110B0]
Räffelstrasse 28
8045 Zürich
E: moritz.pflanzer@hexagon.com<mailto:moritz.pflanzer@hexagon.com><mailto:carolin.siebert@hexagon.com>
W: http://www.hexagongeosystems.com
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_______________________________________________
lttng-dev mailing list
lttng-dev@lists.lttng.org
https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [lttng-dev] Help needed: No UST events recorded
2020-08-03 9:35 [lttng-dev] Help needed: No UST events recorded PFLANZER Moritz via lttng-dev
@ 2020-08-03 15:31 ` Jonathan Rajotte-Julien via lttng-dev
2020-08-04 8:15 ` PFLANZER Moritz via lttng-dev
0 siblings, 1 reply; 5+ messages in thread
From: Jonathan Rajotte-Julien via lttng-dev @ 2020-08-03 15:31 UTC (permalink / raw)
To: PFLANZER Moritz; +Cc: lttng-dev
Hi Moritz
What is your version of lttng-tools?
lttng --version
Please run the `hello` executable using the LTTNG_UST_DEBUG env variable, while
tracing, and provide the output.
pkill lttng-sessiond
lttng-sessiond -b -vvv --verbose-consumer 2> /tmp/lttng-sessiond.log
lttng create
lttng enable-event -u -a
lttng start
LTTNG_UST_DEBUG=y ./hello
lttng stop
lttng destroy
pkill lttng-sessiond
Please also provide the /tmp/lttng-sessiond.log file via pastebin.
I suspect that if you cross-compiled lttng-ust from the master branch that
lttng-tools is not using the same version, resulting in the application not
being able to register to the lttng-sessiond.
Cheers
On Mon, Aug 03, 2020 at 09:35:25AM +0000, PFLANZER Moritz via lttng-dev wrote:
> Hi all!
>
> I'm struggling to get userspace tracing working on an aarch64 platform (busybox on top of Linux 5.4.24 kernel). I followed the guidelines in the docs and am currently using this example program for testing: https://github.com/lttng/lttng-ust/tree/master/doc/examples/hello-static-lib
> I cross-compiled lttng-ust and that example, but when I run the following commands on the platform no traces are recorded. If I use the same example on my x86 machine everything works as expected. (And kernelspace tracing is working on that aarch64 system.)
>
> Any hints where I could start investigating the issue are welcome.
>
> Regards,
> Moritz
>
> ~ # pwd
> /root
> ~ # lttng create
> Spawning a session daemon
> Session auto-20200720-174509 created.
> Traces will be written in /root/lttng-traces/auto-20200720-174509
> ~ # lttng enable-event -au
> All UST events are enabled in channel channel0
> ~ # lttng start
> Tracing started for session auto-20200720-174509
> ~ # ./hello
> Hello, World!
> Tracing... done.
> ~ # lttng destroy
> Session auto-20200720-174509 destroyed
> ~ # ll
> total 40
> -rwxr-xr-x 1 root root 39280 Jul 20 17:44 hello*
>
>
>
> Moritz Pflanzer
> Software Development Engineer
>
> [cid:image001.png@01D3BF6E.185110B0]
>
> Räffelstrasse 28
>
> 8045 Zürich
> E: moritz.pflanzer@hexagon.com<mailto:moritz.pflanzer@hexagon.com><mailto:carolin.siebert@hexagon.com>
> W: http://www.hexagongeosystems.com
> _______________________________________________
> lttng-dev mailing list
> lttng-dev@lists.lttng.org
> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
--
Jonathan Rajotte-Julien
EfficiOS
_______________________________________________
lttng-dev mailing list
lttng-dev@lists.lttng.org
https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [lttng-dev] Help needed: No UST events recorded
2020-08-03 15:31 ` Jonathan Rajotte-Julien via lttng-dev
@ 2020-08-04 8:15 ` PFLANZER Moritz via lttng-dev
2020-08-04 13:09 ` Jonathan Rajotte-Julien via lttng-dev
0 siblings, 1 reply; 5+ messages in thread
From: PFLANZER Moritz via lttng-dev @ 2020-08-04 8:15 UTC (permalink / raw)
To: Jonathan Rajotte-Julien; +Cc: lttng-dev
[-- Attachment #1.1.1: Type: text/plain, Size: 4180 bytes --]
Hi Jonathan,
Apologies that I forgot to mention which version of LTTng I'm using. I didn't build from master but downloaded the latest release archives for LTTng 2.12 "(Ta) Meilleure". "lttng --version" reports a corresponding "lttng (LTTng Trace Control) 2.12.1 - (Ta) Meilleure"
Please find the console log here: https://pastebin.com/PVzqrPvr
and the lttng-sessiond.log here: https://pastebin.com/g3aXAcQg
Thanks,
Moritz
Moritz Pflanzer
Software Development Engineer
[cid:image001.png@01D3BF6E.185110B0]
Räffelstrasse 28
8045 Zürich
E: moritz.pflanzer@hexagon.com<mailto:moritz.pflanzer@hexagon.com><mailto:carolin.siebert@hexagon.com>
W: http://www.hexagongeosystems.com
________________________________
From: Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
Sent: 03 August 2020 17:31
To: PFLANZER Moritz <moritz.pflanzer@hexagon.com>
Cc: lttng-dev@lists.lttng.org <lttng-dev@lists.lttng.org>
Subject: Re: [lttng-dev] Help needed: No UST events recorded
This email is not from Hexagon’s Office 365 instance. Please be careful while clicking links, opening attachments, or replying to this email.
Hi Moritz
What is your version of lttng-tools?
lttng --version
Please run the `hello` executable using the LTTNG_UST_DEBUG env variable, while
tracing, and provide the output.
pkill lttng-sessiond
lttng-sessiond -b -vvv --verbose-consumer 2> /tmp/lttng-sessiond.log
lttng create
lttng enable-event -u -a
lttng start
LTTNG_UST_DEBUG=y ./hello
lttng stop
lttng destroy
pkill lttng-sessiond
Please also provide the /tmp/lttng-sessiond.log file via pastebin.
I suspect that if you cross-compiled lttng-ust from the master branch that
lttng-tools is not using the same version, resulting in the application not
being able to register to the lttng-sessiond.
Cheers
On Mon, Aug 03, 2020 at 09:35:25AM +0000, PFLANZER Moritz via lttng-dev wrote:
> Hi all!
>
> I'm struggling to get userspace tracing working on an aarch64 platform (busybox on top of Linux 5.4.24 kernel). I followed the guidelines in the docs and am currently using this example program for testing: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Flttng%2Flttng-ust%2Ftree%2Fmaster%2Fdoc%2Fexamples%2Fhello-static-lib&data=02%7C01%7C%7Ce141a6eb68ea4d4c93c508d837c25b99%7C1b16ab3eb8f64fe39f3e2db7fe549f6a%7C0%7C0%7C637320655210160415&sdata=lPbFWob0G4U22ncUmqfz12Ha42xOymctYWCOJC34oC8%3D&reserved=0
> I cross-compiled lttng-ust and that example, but when I run the following commands on the platform no traces are recorded. If I use the same example on my x86 machine everything works as expected. (And kernelspace tracing is working on that aarch64 system.)
>
> Any hints where I could start investigating the issue are welcome.
>
> Regards,
> Moritz
>
> ~ # pwd
> /root
> ~ # lttng create
> Spawning a session daemon
> Session auto-20200720-174509 created.
> Traces will be written in /root/lttng-traces/auto-20200720-174509
> ~ # lttng enable-event -au
> All UST events are enabled in channel channel0
> ~ # lttng start
> Tracing started for session auto-20200720-174509
> ~ # ./hello
> Hello, World!
> Tracing... done.
> ~ # lttng destroy
> Session auto-20200720-174509 destroyed
> ~ # ll
> total 40
> -rwxr-xr-x 1 root root 39280 Jul 20 17:44 hello*
>
>
>
> Moritz Pflanzer
> Software Development Engineer
>
> [cid:image001.png@01D3BF6E.185110B0]
>
> Räffelstrasse 28
>
> 8045 Zürich
> E: moritz.pflanzer@hexagon.com<mailto:moritz.pflanzer@hexagon.com><mailto:carolin.siebert@hexagon.com>
> W: http://www.hexagongeosystems.com/
> _______________________________________________
> lttng-dev mailing list
> lttng-dev@lists.lttng.org
> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.lttng.org%2Fcgi-bin%2Fmailman%2Flistinfo%2Flttng-dev&data=02%7C01%7C%7Ce141a6eb68ea4d4c93c508d837c25b99%7C1b16ab3eb8f64fe39f3e2db7fe549f6a%7C0%7C0%7C637320655210160415&sdata=bH0laqzT2Hl5nQw1qTxubC6PMyzsthqYZ5gOa4VyxAA%3D&reserved=0
--
Jonathan Rajotte-Julien
EfficiOS
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_______________________________________________
lttng-dev mailing list
lttng-dev@lists.lttng.org
https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [lttng-dev] Help needed: No UST events recorded
2020-08-04 8:15 ` PFLANZER Moritz via lttng-dev
@ 2020-08-04 13:09 ` Jonathan Rajotte-Julien via lttng-dev
2020-08-05 4:50 ` PFLANZER Moritz via lttng-dev
0 siblings, 1 reply; 5+ messages in thread
From: Jonathan Rajotte-Julien via lttng-dev @ 2020-08-04 13:09 UTC (permalink / raw)
To: PFLANZER Moritz; +Cc: lttng-dev
Hi Moritz,
From the lttng-sessiond log:
PERROR - 08:04:45.465478146 [575/575]: Failed to open wait shm at /lttng-ust-wait-8: Function not implemented (in get_wait_shm() at shm.c:98)
DEBUG1 - 08:04:45.465496345 [575/575]: Failing to get the wait shm fd (in get_wait_shm() at shm.c:143)
Error: Failed to notify applications or create the wait shared memory.
Execution continues but there might be problems for already
running applications that wishes to register.
On the app side we see that the app never register:
libust[694/694]: Error: Error opening shm /lttng-ust-wait-8-0 (in get_wait_shm() at lttng-ust-comm.c:1241)
libust[694/694]: Warning: Unable to get map shm for local apps. Disabling LTTng-UST per-user tracing. (in setup_local_apps() at lttng-ust-comm.c:523)
Does the /dev/shm mount point exist?
Does your kernel support shared memory/tmpfs?
Cheers
On Tue, Aug 04, 2020 at 08:15:08AM +0000, PFLANZER Moritz wrote:
> Hi Jonathan,
>
> Apologies that I forgot to mention which version of LTTng I'm using. I didn't build from master but downloaded the latest release archives for LTTng 2.12 "(Ta) Meilleure". "lttng --version" reports a corresponding "lttng (LTTng Trace Control) 2.12.1 - (Ta) Meilleure"
>
> Please find the console log here: https://pastebin.com/PVzqrPvr
> and the lttng-sessiond.log here: https://pastebin.com/g3aXAcQg
>
> Thanks,
> Moritz
>
>
>
> Moritz Pflanzer
> Software Development Engineer
>
> [cid:image001.png@01D3BF6E.185110B0]
>
> Räffelstrasse 28
>
> 8045 Zürich
> E: moritz.pflanzer@hexagon.com<mailto:moritz.pflanzer@hexagon.com><mailto:carolin.siebert@hexagon.com>
> W: http://www.hexagongeosystems.com
>
> ________________________________
> From: Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
> Sent: 03 August 2020 17:31
> To: PFLANZER Moritz <moritz.pflanzer@hexagon.com>
> Cc: lttng-dev@lists.lttng.org <lttng-dev@lists.lttng.org>
> Subject: Re: [lttng-dev] Help needed: No UST events recorded
>
> This email is not from Hexagon’s Office 365 instance. Please be careful while clicking links, opening attachments, or replying to this email.
>
>
> Hi Moritz
>
> What is your version of lttng-tools?
>
> lttng --version
>
> Please run the `hello` executable using the LTTNG_UST_DEBUG env variable, while
> tracing, and provide the output.
>
> pkill lttng-sessiond
> lttng-sessiond -b -vvv --verbose-consumer 2> /tmp/lttng-sessiond.log
> lttng create
> lttng enable-event -u -a
> lttng start
> LTTNG_UST_DEBUG=y ./hello
> lttng stop
> lttng destroy
> pkill lttng-sessiond
>
> Please also provide the /tmp/lttng-sessiond.log file via pastebin.
>
> I suspect that if you cross-compiled lttng-ust from the master branch that
> lttng-tools is not using the same version, resulting in the application not
> being able to register to the lttng-sessiond.
>
> Cheers
>
> On Mon, Aug 03, 2020 at 09:35:25AM +0000, PFLANZER Moritz via lttng-dev wrote:
> > Hi all!
> >
> > I'm struggling to get userspace tracing working on an aarch64 platform (busybox on top of Linux 5.4.24 kernel). I followed the guidelines in the docs and am currently using this example program for testing: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Flttng%2Flttng-ust%2Ftree%2Fmaster%2Fdoc%2Fexamples%2Fhello-static-lib&data=02%7C01%7C%7Ce141a6eb68ea4d4c93c508d837c25b99%7C1b16ab3eb8f64fe39f3e2db7fe549f6a%7C0%7C0%7C637320655210160415&sdata=lPbFWob0G4U22ncUmqfz12Ha42xOymctYWCOJC34oC8%3D&reserved=0
> > I cross-compiled lttng-ust and that example, but when I run the following commands on the platform no traces are recorded. If I use the same example on my x86 machine everything works as expected. (And kernelspace tracing is working on that aarch64 system.)
> >
> > Any hints where I could start investigating the issue are welcome.
> >
> > Regards,
> > Moritz
> >
> > ~ # pwd
> > /root
> > ~ # lttng create
> > Spawning a session daemon
> > Session auto-20200720-174509 created.
> > Traces will be written in /root/lttng-traces/auto-20200720-174509
> > ~ # lttng enable-event -au
> > All UST events are enabled in channel channel0
> > ~ # lttng start
> > Tracing started for session auto-20200720-174509
> > ~ # ./hello
> > Hello, World!
> > Tracing... done.
> > ~ # lttng destroy
> > Session auto-20200720-174509 destroyed
> > ~ # ll
> > total 40
> > -rwxr-xr-x 1 root root 39280 Jul 20 17:44 hello*
> >
> >
> >
> > Moritz Pflanzer
> > Software Development Engineer
> >
> > [cid:image001.png@01D3BF6E.185110B0]
> >
> > Räffelstrasse 28
> >
> > 8045 Zürich
> > E: moritz.pflanzer@hexagon.com<mailto:moritz.pflanzer@hexagon.com><mailto:carolin.siebert@hexagon.com>
> > W: http://www.hexagongeosystems.com/
>
>
>
> > _______________________________________________
> > lttng-dev mailing list
> > lttng-dev@lists.lttng.org
> > https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.lttng.org%2Fcgi-bin%2Fmailman%2Flistinfo%2Flttng-dev&data=02%7C01%7C%7Ce141a6eb68ea4d4c93c508d837c25b99%7C1b16ab3eb8f64fe39f3e2db7fe549f6a%7C0%7C0%7C637320655210160415&sdata=bH0laqzT2Hl5nQw1qTxubC6PMyzsthqYZ5gOa4VyxAA%3D&reserved=0
>
>
> --
> Jonathan Rajotte-Julien
> EfficiOS
--
Jonathan Rajotte-Julien
EfficiOS
_______________________________________________
lttng-dev mailing list
lttng-dev@lists.lttng.org
https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [lttng-dev] Help needed: No UST events recorded
2020-08-04 13:09 ` Jonathan Rajotte-Julien via lttng-dev
@ 2020-08-05 4:50 ` PFLANZER Moritz via lttng-dev
0 siblings, 0 replies; 5+ messages in thread
From: PFLANZER Moritz via lttng-dev @ 2020-08-05 4:50 UTC (permalink / raw)
To: Jonathan Rajotte-Julien; +Cc: lttng-dev
[-- Attachment #1.1.1: Type: text/plain, Size: 6751 bytes --]
Hi Jonathan,
I was indeed missing the /dev/shm mountpoint. After creating it everything now works as expected. Thanks!
Regards
Moritz Pflanzer
Software Development Engineer
[cid:image001.png@01D3BF6E.185110B0]
Räffelstrasse 28
8045 Zürich
E: moritz.pflanzer@hexagon.com<mailto:moritz.pflanzer@hexagon.com><mailto:carolin.siebert@hexagon.com>
W: http://www.hexagongeosystems.com
________________________________
From: Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
Sent: 04 August 2020 15:09
To: PFLANZER Moritz <moritz.pflanzer@hexagon.com>
Cc: lttng-dev@lists.lttng.org <lttng-dev@lists.lttng.org>
Subject: Re: [lttng-dev] Help needed: No UST events recorded
This email is not from Hexagon’s Office 365 instance. Please be careful while clicking links, opening attachments, or replying to this email.
Hi Moritz,
From the lttng-sessiond log:
PERROR - 08:04:45.465478146 [575/575]: Failed to open wait shm at /lttng-ust-wait-8: Function not implemented (in get_wait_shm() at shm.c:98)
DEBUG1 - 08:04:45.465496345 [575/575]: Failing to get the wait shm fd (in get_wait_shm() at shm.c:143)
Error: Failed to notify applications or create the wait shared memory.
Execution continues but there might be problems for already
running applications that wishes to register.
On the app side we see that the app never register:
libust[694/694]: Error: Error opening shm /lttng-ust-wait-8-0 (in get_wait_shm() at lttng-ust-comm.c:1241)
libust[694/694]: Warning: Unable to get map shm for local apps. Disabling LTTng-UST per-user tracing. (in setup_local_apps() at lttng-ust-comm.c:523)
Does the /dev/shm mount point exist?
Does your kernel support shared memory/tmpfs?
Cheers
On Tue, Aug 04, 2020 at 08:15:08AM +0000, PFLANZER Moritz wrote:
> Hi Jonathan,
>
> Apologies that I forgot to mention which version of LTTng I'm using. I didn't build from master but downloaded the latest release archives for LTTng 2.12 "(Ta) Meilleure". "lttng --version" reports a corresponding "lttng (LTTng Trace Control) 2.12.1 - (Ta) Meilleure"
>
> Please find the console log here: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpastebin.com%2FPVzqrPvr&data=02%7C01%7C%7C9bc88da99a1646d66d4408d83877ab9f%7C1b16ab3eb8f64fe39f3e2db7fe549f6a%7C0%7C0%7C637321433923510073&sdata=kpJmnfbLdWJXCElVkR7tcdSuVy%2FLeeZw9xaLnI3mHXY%3D&reserved=0
> and the lttng-sessiond.log here: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpastebin.com%2Fg3aXAcQg&data=02%7C01%7C%7C9bc88da99a1646d66d4408d83877ab9f%7C1b16ab3eb8f64fe39f3e2db7fe549f6a%7C0%7C0%7C637321433923520068&sdata=hN4mc9XXz%2FBQQSm0NpjS94CHDanmESE6n9Jn5T4TVDQ%3D&reserved=0
>
> Thanks,
> Moritz
>
>
>
> Moritz Pflanzer
> Software Development Engineer
>
> [cid:image001.png@01D3BF6E.185110B0]
>
> Räffelstrasse 28
>
> 8045 Zürich
> E: moritz.pflanzer@hexagon.com<mailto:moritz.pflanzer@hexagon.com><mailto:carolin.siebert@hexagon.com>
> W: http://www.hexagongeosystems.com/
>
> ________________________________
> From: Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
> Sent: 03 August 2020 17:31
> To: PFLANZER Moritz <moritz.pflanzer@hexagon.com>
> Cc: lttng-dev@lists.lttng.org <lttng-dev@lists.lttng.org>
> Subject: Re: [lttng-dev] Help needed: No UST events recorded
>
> This email is not from Hexagon’s Office 365 instance. Please be careful while clicking links, opening attachments, or replying to this email.
>
>
> Hi Moritz
>
> What is your version of lttng-tools?
>
> lttng --version
>
> Please run the `hello` executable using the LTTNG_UST_DEBUG env variable, while
> tracing, and provide the output.
>
> pkill lttng-sessiond
> lttng-sessiond -b -vvv --verbose-consumer 2> /tmp/lttng-sessiond.log
> lttng create
> lttng enable-event -u -a
> lttng start
> LTTNG_UST_DEBUG=y ./hello
> lttng stop
> lttng destroy
> pkill lttng-sessiond
>
> Please also provide the /tmp/lttng-sessiond.log file via pastebin.
>
> I suspect that if you cross-compiled lttng-ust from the master branch that
> lttng-tools is not using the same version, resulting in the application not
> being able to register to the lttng-sessiond.
>
> Cheers
>
> On Mon, Aug 03, 2020 at 09:35:25AM +0000, PFLANZER Moritz via lttng-dev wrote:
> > Hi all!
> >
> > I'm struggling to get userspace tracing working on an aarch64 platform (busybox on top of Linux 5.4.24 kernel). I followed the guidelines in the docs and am currently using this example program for testing: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Flttng%2Flttng-ust%2Ftree%2Fmaster%2Fdoc%2Fexamples%2Fhello-static-lib&data=02%7C01%7C%7C9bc88da99a1646d66d4408d83877ab9f%7C1b16ab3eb8f64fe39f3e2db7fe549f6a%7C0%7C0%7C637321433923520068&sdata=nbgcpqyriJ1kERRFLum2sH91yXi28hhfeN9lQ3OyfOc%3D&reserved=0
> > I cross-compiled lttng-ust and that example, but when I run the following commands on the platform no traces are recorded. If I use the same example on my x86 machine everything works as expected. (And kernelspace tracing is working on that aarch64 system.)
> >
> > Any hints where I could start investigating the issue are welcome.
> >
> > Regards,
> > Moritz
> >
> > ~ # pwd
> > /root
> > ~ # lttng create
> > Spawning a session daemon
> > Session auto-20200720-174509 created.
> > Traces will be written in /root/lttng-traces/auto-20200720-174509
> > ~ # lttng enable-event -au
> > All UST events are enabled in channel channel0
> > ~ # lttng start
> > Tracing started for session auto-20200720-174509
> > ~ # ./hello
> > Hello, World!
> > Tracing... done.
> > ~ # lttng destroy
> > Session auto-20200720-174509 destroyed
> > ~ # ll
> > total 40
> > -rwxr-xr-x 1 root root 39280 Jul 20 17:44 hello*
> >
> >
> >
> > Moritz Pflanzer
> > Software Development Engineer
> >
> > [cid:image001.png@01D3BF6E.185110B0]
> >
> > Räffelstrasse 28
> >
> > 8045 Zürich
> > E: moritz.pflanzer@hexagon.com<mailto:moritz.pflanzer@hexagon.com><mailto:carolin.siebert@hexagon.com>
> > W: http://www.hexagongeosystems.com/
>
>
>
> > _______________________________________________
> > lttng-dev mailing list
> > lttng-dev@lists.lttng.org
> > https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.lttng.org%2Fcgi-bin%2Fmailman%2Flistinfo%2Flttng-dev&data=02%7C01%7C%7C9bc88da99a1646d66d4408d83877ab9f%7C1b16ab3eb8f64fe39f3e2db7fe549f6a%7C0%7C0%7C637321433923520068&sdata=ci4daouTRyY%2BWzSjqVhrmjn11lhYHKs6lcR6kvqr370%3D&reserved=0
>
>
> --
> Jonathan Rajotte-Julien
> EfficiOS
--
Jonathan Rajotte-Julien
EfficiOS
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^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-08-05 4:50 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-08-03 9:35 [lttng-dev] Help needed: No UST events recorded PFLANZER Moritz via lttng-dev
2020-08-03 15:31 ` Jonathan Rajotte-Julien via lttng-dev
2020-08-04 8:15 ` PFLANZER Moritz via lttng-dev
2020-08-04 13:09 ` Jonathan Rajotte-Julien via lttng-dev
2020-08-05 4:50 ` PFLANZER Moritz via lttng-dev
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