ColtrolPort IC Timeout

GNU Radio
1

I have a gui-less flowgraph that runs in the background with sudo
privileges. While I can run ControlPort normally from GRC, it doesn’t
seem
to work properly with my backgrounded FG - I get timeout errors. My
config
files are setup so that both FGs do actually call ControlPort and Perf
Mon
(verified in log files). The FG and the monitoring apps are all running
on
the same PC.

Setup is Ubuntu 12.04 x64 with GR 3.7.4, built on the weekend.

Attempting to run Perf Mon, I get:

$ gr-perf-monitorx 127.0.0.1 23456

2014-05-22 11:01:54.450720 /usr/bin/gr-perf-monitorx: error: Traceback
(most recent call last):
File “/usr/lib/pymodules/python2.7/Ice.py”, line 984, in main
status = self.doMain(args, initData)
File “/usr/lib/pymodules/python2.7/Ice.py”, line 1031, in doMain
return self.run(args)
File
“/usr/lib/python2.7/dist-packages/gnuradio/ctrlport/IceRadioClient.py”,
line 102, in run
ex = self.parentClass(radio, port, self)
File “/usr/bin/gr-perf-monitorx”, line 74, in init
self.newCon(radio, port)
File “/usr/bin/gr-perf-monitorx”, line 88, in newCon
child = MForm(radio, port, len(self.conns), self)
File “/usr/bin/gr-perf-monitorx”, line 696, in init
knobs = self.radio.get([])
File “/usr/lib/python2.7/dist-packages/gnuradio_ice.py”, line 1221, in
get
return
_M_gnuradio.ctrlport.GNURadio.ControlPort._op_get.invoke(self,
((knobs, ), _ctx))
ConnectTimeoutException: exception ::Ice::ConnectTimeoutException
{
}

Attempting to run Ctrl Port Mon, I get:

A blank canvas screen like this: http://i.imgur.com/8N88fcU.png

and console output like:

$ gr-ctrlport-monitor 127.0.0.1 23456
X Error: BadAccess (attempt to access private resource denied) 10
Extension: 129 (MIT-SHM)
Minor opcode: 1 (X_ShmAttach)
Resource id: 0x4200001
X Error: BadShmSeg (invalid shared segment parameter) 128
Extension: 129 (MIT-SHM)
Minor opcode: 5 (X_ShmCreatePixmap)
Resource id: 0x4200012
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
Major opcode: 62 (X_CopyArea)
Resource id: 0x4200013
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
Major opcode: 62 (X_CopyArea)
Resource id: 0x4200013
ctrlport-monitor: radio.get threw exception (exception
::Ice::ConnectTimeoutException
{
}).
…

My ctrlport.conf file has just one uncommented line:

ControlPort.Endpoints = tcp -t 5000 -h 127.0.0.1 -p 23456

I had extended the timeout, attempting to resolve the problem, but had
no
luck.

Very Respectfully,

Dan CaJacob

2

On Thu, May 22, 2014 at 11:09 AM, Dan CaJacob [email protected]
wrote:

$ gr-perf-monitorx 127.0.0.1 23456

Hey Dan,

When you’re running the flowgraph that you’re trying to connect to over
ControlPort, can you verify that they are setting up the correct
endpoint?
If you run it yourself, not as a background task, it should print out
information about the endpoints. That will tell you the port number.
Just
want to check to make sure your config file is getting read correctly
and
setting it up on port 23456 like you specified.

We really should move the endpoint information to be sent out by the
gr-log
system so you can redirect the info to a file and see the info without
requiring you to have access to stdout.

Tom

3

Hey Tom,

Yes, it was definitely pulling the correct endpoint. Even though it is
backgrounded, I have a log for everything that ran.

Very Respectfully,

Dan CaJacob

4

On Fri, May 23, 2014 at 1:06 PM, Dan CaJacob [email protected]
wrote:

Hey Tom,

Yes, it was definitely pulling the correct endpoint. Even though it is
backgrounded, I have a log for everything that ran.

Very Respectfully,

Dan CaJacob

Hey Dan,
Bit of a holiday this weekend, mostly away from my computers. I’d like
to
try to solve this problem with you, but I’m not sure where to begin. I’m
wondering if it’s related to the intermittent/infrequent QA failures
I’ve
seen when ControlPort is turned on. Is there any chance you can provide
a
simple program that we can use to exercise the problem for me to help
debug?

Tom