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TPTP Problems....Please help? [message #81059]

Fri, 18 August 2006 05:32

Eclipse User

Originally posted by: gary.johnson.ericsson.com

I've been using tptp for memory profiling over the last two weeks and have
a couple of issues to ask you about.
I've worked through the example in the tptp documentation and another
example available from IBM online in addition to profiling TELIS. In all
cases I've found that the techniques for detecting memory leaks don't
appear to function as expected.

When working with memory statistics, when we run garbage collection to
collect all unreferenced objects we see no effect in the tptp views.
However if I insert code in the same examples to explicitly call garbage
collection I see the number of live instances decrease. This makes it
difficult for us to trust the information that we are getting back from
memory analysis, etc.

Also we have experienced problems with TPTP becoming unresponsive after it
has been left idle for a period of time. In addition if I try to reset the
collected data so that I'm looking at new data from that point on I find
that profiling monitor is no longer usable and I need to restart my
profiling session.
My overall feel for the tool at this point is that it is very useful for
debugging and examining the runtime behaviour of an application but less
useful for profiling memory usage.
I am hoping I am wrong.........................Can anyone help??? Thanks

Re: TPTP Problems....Please help? [message #81074 is a reply to message #81059]

Fri, 18 August 2006 10:27

Eclipse User

Originally posted by: nmehrega.ca.ibm.com

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Unfortunately the "run garbage collection" button isn't currently working
in TPTP. Here's the defect:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=133954 which is targetted
for the 4.3 release. Feel free to add yourself to the CC list.

Navid Mehregani
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 Unfortunately the "run garbage
collection" button isn't currently working in TPTP.  Here's the
defect: https://bugs.eclipse.org/bugs/show_bug.cgi?id=133954 which is targetted
for the 4.3 release.   Feel free to add yourself to the CC list.
 
 Navid Mehregani
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Re: TPTP Problems....Please help? [message #81118 is a reply to message #81074]

Fri, 18 August 2006 10:39

Eclipse User

Originally posted by: gary.johnson.ericsson.com

Once again Navid....Thanks!

Do you know of any issues regarding the second problem:

"Also we have experienced problems with TPTP becoming unresponsive after
it has been left idle for a period of time. In addition if I try to reset
the collected data so that I'm looking at new data from that point on I
find that profiling monitor is no longer usable and I need to restart my
profiling session."

Thanks!

Re: TPTP Problems....Please help? [message #81148 is a reply to message #81118]

Fri, 18 August 2006 10:45

Eclipse User

Originally posted by: nmehrega.ca.ibm.com

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Hi Gary,

You need to provide the exact use case for this before I can help you out.
How are you resetting the collected data? What is it that you leave idle
for a while? the workbench? Agent Controller? or both?

Navid Mehregani
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 Hi Gary,
 
 You need to provide the exact use case
for this before I can help you out.  How are you resetting the collected
data?  What is it that you leave idle for a while? the workbench?
Agent Controller? or both?
 
 Navid Mehregani
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Re: TPTP Problems....Please help? [message #81395 is a reply to message #81148]

Tue, 22 August 2006 11:46

Eclipse User

Originally posted by: gary.johnson.ericsson.com

Thanks again Navid!!

The problem with tptp becoming unresponsive if left idle was experienced
by the two summer students and unfortunately they left last week but if I
experience this I will let you know. From talking to them it was the
eclipse workbench that was left idle.
On the second issue, in the "Profiling monitor" view when I select "Reset
data" from the context menu I find that the profiling monitor is no longer
usable.
Cheers!

Re: TPTP Problems....Please help? [message #81548 is a reply to message #81395]

Wed, 23 August 2006 11:13

Eclipse User

Originally posted by: nmehrega.ca.ibm.com

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Hi Gary,

I couldn't reproduce the problem with a 4.2.1 driver. Note that instead
of "Reset Data", you can also use the "Detach from Agent" and "Attach to
Agent" options. This is essentially what "Reset Data" does. Try using
those instead. I think it's an unnecessary option and I'll probably open
a defect to have it removed.

I didn't try leaving my workbench idle for a while. I'll try and look
into that later.

Navid Mehregani
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 Hi Gary,
 
 I couldn't reproduce the problem with
a 4.2.1 driver.  Note that instead of "Reset Data", you
can also use the "Detach from Agent" and "Attach to Agent"
options.  This is essentially what "Reset Data" does.  Try
using those instead.  I think it's an unnecessary option and I'll
probably open a defect to have it removed.
 
 I didn't try leaving my workbench idle
for a while.  I'll try and look into that later.
 
 Navid Mehregani
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Re: TPTP Problems....Please help? [message #81651 is a reply to message #81548]

Thu, 24 August 2006 10:11

Eclipse User

Originally posted by: gary.johnson.ericsson.com

Thanks again.....

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