Hi,
I am attaching the traces . I tried to synchronize the traces of same
machine but still quality is absent .
I am in urgent need to get these traces synchronized .
On Tue, Jan 6, 2015 at 11:00 AM, Divya Vyas <[email protected]
<mailto:[email protected]>> wrote:
Hi ,
I tried again the steps.
net_dev_queue: { cpu_id = 0 }, { skbaddr = 18446612135892807424,
len = 98, name = "eth0", network_header = ( _nhtype_ip : container
= 1 ), network_fields = { nhtype_ip = { ihl_version = 0x45, tos =
0, tot_len = 84, id = 0x560A, frag_off = 16384, ttl = 64, protocol
= 0x1, checksum = 0xFFF4, saddr = 0xAA267D8, daddr = 0xAA2678E }
}, transport_header = ( _thtype_none : container = 0 ),
transport_fields = { thtype_none = { } } }
net_dev_queue: { cpu_id = 0 }, { skbaddr = 18446612135892807424,
len = 98, name = "eth0", network_header = ( _nhtype_ip : container
= 1 ), network_fields = { nhtype_ip = { ihl_version = 0x45, tos =
0, tot_len = 84, id = 0x560A, frag_off = 16384, ttl = 64, protocol
= 0x1, checksum = 0xFFF4, saddr = 0xAA267D8, daddr = 0xAA2678E }
}, transport_header = ( _thtype_none : container = 0 ),
transport_fields = { thtype_none = { } } }
Is this kind of data should be added in the trace log ?
On Tue, Jan 6, 2015 at 3:21 AM, Divya Vyas <[email protected]
<mailto:[email protected]>> wrote:
Hi,
Can you please help me what kind of extra fields will be added
in trace data. Because I think I followed all the steps.
The branch I was not able to got ,getting some git error. So I
downloaded snapshot from website.
On Jan 5, 2015 9:14 PM, "Geneviève Bastien"
<[email protected] <mailto:[email protected]>> wrote:
Hi Divya,
I looked at your traces and you do not seem to be using
the 'net_data_experimental' special branch to get the
extra fields for synchronization. You have the
net_dev_queue and netif_receive_skb events, but they do
not have the required fields to be able to synchronize.
See the section "Obtain synchronizable traces" in
http://help.eclipse.org/luna/index.jsp?topic=%2Forg.eclipse.linuxtools.lttng.help%2Fdoc%2FTrace-synchronization.html
for how to compile with that branch.
Geneviève
On 12/28/2014 12:44 AM, Divya Vyas wrote:
Hi,
I am getting Synchronization quality is absent. The
workload I am using is ssh and scp .
I have attached the traces . Can you please look at it
and give em some advise where I am going wrong?
Thanks,
Divya
On Wed, Dec 24, 2014 at 1:54 AM, Geneviève Bastien
<[email protected] <mailto:[email protected]>> wrote:
Hi Divya,
If you followed the instructions in the help, then
you have compiled
LTTng-modules with the right tracepoints enabled on
all the machines you
want to synchronize. Which method did you choose?
Make sure you enabled either
net_dev_queue/netif_receive_skb or
inet_sock_local_in/inet_sock_local_out on all
machines. Also make sure
all machines exchange TCP packets during the trace,
otherwise there will
be nothing to synchronize them on.
When you say you are not getting anything, what do
you mean? Do you have
output in the Synchronization view? If the
synchronization was OK, but
nothing was found, you should get a Synchronization
Quality of "Absent".
If the output is empty, either you have long traces
and you didn't get
anything yet (there is no progress bar for the
synchronization yet). Or
you may have gotten an exception.
Can you provide us with your traces so we can take a
closer look?
Geneviève
On 14-12-23 02:40 PM, Matthew Khouzam wrote:
> So you have traces with network stuff, I would
suggest seeing what
> events are enabled in your trace. Maybe you are
missing some key events,
> maybe the synchronization worked and we're chasing
a ghost...
>
> I am ccing Genevieve Bastien, and Masoume
Jabbarifar, the two people who
> designed and implemented synchronisation.
>
> I am not as much an expert as I would like to be in
that field.
>
> For offsetting though, it's in tracecompass, the
next version of the
> Eclipse LTTng viewer
>
> Here is a link to the page.
> http://projects.eclipse.org/projects/tools.tracecompass
>
> On 14-12-23 12:19 AM, Divya Vyas wrote:
>> Hi,
>>
>> Is there any document which describes how to
synchronize the traces on
>> same machine as well as different machine (
setting offset also ) .
>>
>> I exported the two trace in experiment and clicked
on synchronize
>> traces . But not getting anything.
>>
>> I followed this page
>>
>>
http://help.eclipse.org/luna/index.jsp?topic=%2Forg.eclipse.linuxtools.lttng.help%2Fdoc%2FTrace-synchronization.html
>>
>> Thanks,
>> Divya
>>
>>
>>
>> On Mon, Dec 22, 2014 at 11:24 PM, Matthew Khouzam
>> <[email protected]
<mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>>
>> wrote:
>>
>> Sorry, I was a little hasty in my reply. You
can export traces,
>> but not
>> experiments yet, this is a feature to expect
soon if people want it.
>>
>>
>> On 14-12-22 10:17 AM, Matthew Khouzam wrote:
>> > Michel has hit the nail on the head there.
>> >
>> > I would just like to add that one can export
an experiment in trace
>> > compass. This means that the two traces are
shipped in a zip
>> with the
>> > synchronization. You can also apply a
constant clock offset if
>> network
>> > events are unavailable. If you really really
want to make a CTF
>> trace as
>> > an output, perhaps look at the python bound
babeltrace?
>> >
>> > BR
>> >
>> > Matthew
>> >
>> >
>> > On 14-12-22 08:07 AM, Michel Dagenais wrote:
>> >> Normally, the two traces are stored
separately and they are
>> "merged"
>> >> at display time in TraceCompass. If they
were taken on the same
>> host,
>> >> they use the same clock and should be
naturally aligned. If
>> they come
>> >> from different hosts and you want very fine
symchronization,
>> you need
>> >> some communication events from which to
synchronize the traces. TCP
>> >> packet send and receive events are
typically used. If you want
>> to look
>> >> at two traces simultaneously, it normally
implies that the two are
>> >> related, the two nodes communicating
through the network.
>> >>
>> >>
>>
------------------------------------------------------------------------
>> >>
>> >> Hi,
>> >>
>> >> Is there any way to merge the two CTF
traces and see them
>> in one
>> >> with trace synchronization ?
>> >>
>> >> How it is related to trace synchronization
using network
>> events ?
>> >>
>> >>
>> >> Thanks,
>> >> Divya
>> >>
>> >>
_______________________________________________
>> >> lttng-dev mailing list
>> >> [email protected]
<mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>
>> >>
http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>> >>
>> >>
>> >>
>> >>
>> >> _______________________________________________
>> >> lttng-dev mailing list
>> >> [email protected]
<mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>
>> >>
http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>> >
>> > _______________________________________________
>> > lttng-dev mailing list
>> > [email protected]
<mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>
>> >
http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>>
>>
>> _______________________________________________
>> lttng-dev mailing list
>> [email protected]
<mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>
>>
http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>>
>>
