Trace Streaming problem

Trace Streaming problem

[kumar s]

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Hi,

I am trying to start the trace on MIPS board and dump it remotely on PC.

The steps i do
On MIPS board:
lttng create -U net://192.168.233.207 newsession

lttng enable-event lttng_statedump_start -k

Error: Event lttng_statedump_start: Unable to connect to lttng-relayd
(channel channel0, session news)
Warning: Some command(s) went wrong

In lttng-sessiond -vvv log

[...]
DEBUG3 [1918/2019]: Consumer socket created (fd: 30) and added to output
(in consumer_create_socket() at consumer.c:300)
DEBUG1 [1918/2019]: Setting relayd for session news (in cmd_setup_relayd()
at cmd.c:722)
DEBUG3 [1918/2019]: Relayd connect ... (in relayd_connect() at relayd.c:466)
PERROR [1918/2019]: connect: Connection refused (in
lttcomm_connect_inet_sock() at inet.c:253)
Error: Unable to reach lttng-relayd
DEBUG1 [1918/2019]: Sending response (size: 16, retcode: Unable to connect
to lttng-relayd) (in thread_manage_clients() at main.c:3973)
DEBUG1 [1918/2019]: Clean command context structure (in clean_command_ctx()
at main.c:672)
DEBUG1 [1918/2019]: Accepting client command ... (in
thread_manage_clients() at main.c:3837)

On the linux pc
i have started lttng-relayd

lttng-relayd -vvv -C tcp://0.0.0.0:1234 -D tcp://0.0.0.0:5678 (as specified
in doc folder of lttng-tools)


Unfortunately i get error that lttng-relayd unable to connect. I also tried
started lttng-relayd on mips board and running the same, still i get same
error.

Can someone explain steps for lttng trace streaming or how i can dump the
trace live onto PC.

Thank you
Skumar

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Re: Trace Streaming problem

[kumar s]

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Hello,

Thanks a lot, It worked, i am able stream and save the trace on the remote
PC.

However out of curiosity i am also trying to do live tracing,

On Mips Board

lttng-relayd -vvv

lttng create --live 10000000 -U  net://localhost remotetes

lttng enable-event -a -k

lttng start

On linux PC

lttngtop -r net://192.168.233.39

net://192.168.233.39/1 : remotetes on host Linux_Mips(timer = 10000000, 4
stream(s), 0 client(s) connected)

Segmentation fault (core dumped)

What is the exact steps i need to follow for live tracing,

Thank you
Skumar





On Tue, Feb 11, 2014 at 8:27 PM, David Goulet <dgoulet@efficios.com> wrote:

> On 11 Feb (13:24:15), kumar s wrote:
> > Hi,
> >
> > I am trying to start the trace on MIPS board and dump it remotely on PC.
> >
> > The steps i do
> > On MIPS board:
> > lttng create -U net://192.168.233.207 newsession
> >
> > lttng enable-event lttng_statedump_start -k
> >
> > Error: Event lttng_statedump_start: Unable to connect to lttng-relayd
> > (channel channel0, session news)
> > Warning: Some command(s) went wrong
> >
> > In lttng-sessiond -vvv log
> >
> > [...]
> > DEBUG3 [1918/2019]: Consumer socket created (fd: 30) and added to output
> > (in consumer_create_socket() at consumer.c:300)
> > DEBUG1 [1918/2019]: Setting relayd for session news (in
> cmd_setup_relayd()
> > at cmd.c:722)
> > DEBUG3 [1918/2019]: Relayd connect ... (in relayd_connect() at
> relayd.c:466)
> > PERROR [1918/2019]: connect: Connection refused (in
> > lttcomm_connect_inet_sock() at inet.c:253)
> > Error: Unable to reach lttng-relayd
> > DEBUG1 [1918/2019]: Sending response (size: 16, retcode: Unable to
> connect
> > to lttng-relayd) (in thread_manage_clients() at main.c:3973)
> > DEBUG1 [1918/2019]: Clean command context structure (in
> clean_command_ctx()
> > at main.c:672)
> > DEBUG1 [1918/2019]: Accepting client command ... (in
> > thread_manage_clients() at main.c:3837)
> >
> > On the linux pc
> > i have started lttng-relayd
> >
> > lttng-relayd -vvv -C tcp://0.0.0.0:1234 -D tcp://0.0.0.0:5678 (as
> specified
> > in doc folder of lttng-tools)
>
> The relayd is started with different ports here so the session creation
> should also specify those like so:
>
> $ lttng create -U net://192.168.233.207:1234:5678
>
> (or use -C/-D).
>
> David
>
> >
> >
> > Unfortunately i get error that lttng-relayd unable to connect. I also
> tried
> > started lttng-relayd on mips board and running the same, still i get same
> > error.
> >
> > Can someone explain steps for lttng trace streaming or how i can dump the
> > trace live onto PC.
> >
> > Thank you
> > Skumar
>
> > _______________________________________________
> > lttng-dev mailing list
> > lttng-dev@lists.lttng.org
> > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>
>

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Re: Trace Streaming problem

[David Goulet]

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On 11 Feb (13:24:15), kumar s wrote:
> Hi,
> 
> I am trying to start the trace on MIPS board and dump it remotely on PC.
> 
> The steps i do
> On MIPS board:
> lttng create -U net://192.168.233.207 newsession
> 
> lttng enable-event lttng_statedump_start -k
> 
> Error: Event lttng_statedump_start: Unable to connect to lttng-relayd
> (channel channel0, session news)
> Warning: Some command(s) went wrong
> 
> In lttng-sessiond -vvv log
> 
> [...]
> DEBUG3 [1918/2019]: Consumer socket created (fd: 30) and added to output
> (in consumer_create_socket() at consumer.c:300)
> DEBUG1 [1918/2019]: Setting relayd for session news (in cmd_setup_relayd()
> at cmd.c:722)
> DEBUG3 [1918/2019]: Relayd connect ... (in relayd_connect() at relayd.c:466)
> PERROR [1918/2019]: connect: Connection refused (in
> lttcomm_connect_inet_sock() at inet.c:253)
> Error: Unable to reach lttng-relayd
> DEBUG1 [1918/2019]: Sending response (size: 16, retcode: Unable to connect
> to lttng-relayd) (in thread_manage_clients() at main.c:3973)
> DEBUG1 [1918/2019]: Clean command context structure (in clean_command_ctx()
> at main.c:672)
> DEBUG1 [1918/2019]: Accepting client command ... (in
> thread_manage_clients() at main.c:3837)
> 
> On the linux pc
> i have started lttng-relayd
> 
> lttng-relayd -vvv -C tcp://0.0.0.0:1234 -D tcp://0.0.0.0:5678 (as specified
> in doc folder of lttng-tools)

The relayd is started with different ports here so the session creation
should also specify those like so:

$ lttng create -U net://192.168.233.207:1234:5678

(or use -C/-D).

David

> 
> 
> Unfortunately i get error that lttng-relayd unable to connect. I also tried
> started lttng-relayd on mips board and running the same, still i get same
> error.
> 
> Can someone explain steps for lttng trace streaming or how i can dump the
> trace live onto PC.
> 
> Thank you
> Skumar

> _______________________________________________
> lttng-dev mailing list
> lttng-dev@lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev


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