Experimental Physics and
Industrial Control System

Pete Jemian <[email protected]> · Mon, 16 Mar 2009 16:50:10 -0500

Oleg:

I'd like the tarball as well to test. I see Sergey's Support Request

Case HD12639 on this topic.

Pete

J. Lewis Muir wrote:

On 3/16/09 4:08 PM, Oleg Makarov wrote:

Hi Mark,

I tried the test with this fix. The problem is not resolved by

epicsThreadSleep code change in the osdThread.c.

CA requests are not being send out as they arise, some buffering of the

requests occurs to make network communication more efficient. If you
look at the camonitor output, it shows a 3-second period, exactly as
expected.

Are there way to force CA requests to go out as they arise, with no

buffering?

Hi, Oleg.

pvFlush() will flush the SEQ PV layer, but maybe that's not what you're
asking about.

You can also do a synchronous put:

  pvPut(str_cmd, SYNC);

But still, I don't understand why str_rsp would ever contain one of the
commands from str_cmd (e.g. "I522") like your output shows, unless
something is messed up with what's happening in and beyond "{dev}StrCmd"
and "{dev}StrRsp".

Lewis

--
----------------------------------------------------------
 Pete R. Jemian, Ph.D.                <[email protected]>
 Beam line Controls and Data Acquisition, Group Leader
 Advanced Photon Source,   Argonne National Laboratory
 Argonne, IL  60439                   630 - 252 - 3189
-----------------------------------------------------------
    Education is the one thing for which people
       are willing to pay yet not receive.
-----------------------------------------------------------

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System