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Bug #1264

Run Control Status request rate changed

Added by Leon Mualem over 8 years ago.

Status:
New
Priority:
Normal
Category:
DAQ Software
Start date:
04/27/2011
Due date:
% Done:

0%

Estimated time:
component:
base
Duration:

Description

Around April 7th the run control status request rate change from 0.5Hz to 0.7Hz for no apparent reason. It is believed that the configuration did not change, so the change in behavior is not understood.

You can find more details in the excerpted archive from the nova-daq-software mailing list that I have attached below. You can find the referenced pictures there.

Well, (in a smaller picture) response times didn't change.
Leon

On 4/19/2011 9:03 AM, Kurt Biery wrote:

Jon,
Is the rate of sending heartbeats affected by how long it takes for the responses to come back?
Kurt

On 4/19/2011 10:46 AM, Leon Mualem wrote:

From DCM-13, aka dcm-3-2-3. It looks like the RC StatusRequest Rate has changed.
Leon

On 4/19/2011 8:30 AM, Jonathan Paley wrote:

Weird. We didn't start reading out dcm-3-03-01 until 4/8/2011. I'm pretty sure the heartbeat frequency hasn't changed.

Jon

On Apr 19, 2011, at 9:58 AM, Leon Mualem wrote:

Does anyone know why the RC status request rates changed around 4/7/2011? It went from 0.5Hz to 0.7Hz. Is this intentional, or is this a side-effect adding more DCMs, or ...?
Leon

--
Leon Mualem Office: 626-817-3459
Lauritsen Lab MC 356-48 FAX: 626-584-9304
California Institute of Technology
1200 E. California Blvd
Pasadena, CA 91125


Jonathan M. Paley, Ph.D.
High Energy Physics Department

http://www.hep.anl.gov/jpaley
1-630-252-6612



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