[U2] UV dead lock daemon questions

2005-10-19 Thread Hennessey, Mark F.
In reviewing my uvdlockd.log, I see that even when the deadlock daemon isn't 
running, it looks like it's being run.  Does executing uvlictool clean_lic -a 
call the deadlock process?

Also, in configuring the daemon's resolution strategy, there are three options; 
random termination, terminate newest transaction, or terminate the transaction 
with fewest locks.  I have chosen to terminate the newest, but I was little 
more than flipping a coin...  simply using the 'first come, first server' 
approach.  I can't seem to find anything in the documentation that would help 
me decide which resolution strategy I *should* employ.  Any ideas?

Mark Hennessey
State of Connecticut
DSS/MIS Child Support Systems
Voice: 860-424-5261
Fax: 860-424-4956
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Re: [U2] UV dead lock daemon questions

2005-10-19 Thread Ray Wurlod
Yes, uvlictool clean_lic does execute the same clean up code as the deadlock 
daemon, even unto logging to the same file.  I don't believe it actually starts 
a uvdlockd process, however.

There is no documentation on strategy, because none is really to be preferred 
over the others in all cases.  You need to decide what's right for you.  My 
personal preference is not to enable automatic resolution at all, but instead 
to choose victim after weighing up the circumstances.  Of course, it is then 
necessary to monitor the log to determine when a deadlock situation has been 
detected.  In two years we've not had any, other than one created deliberately 
for testing the process.

- Original Message -
From: Hennessey, Mark F. [EMAIL PROTECTED]
To: u2-users@listserver.u2ug.org
Subject: [U2] UV dead lock daemon questions
Date: Wed, 19 Oct 2005 11:37:10 -0400

 
 In reviewing my uvdlockd.log, I see that even when the deadlock 
 daemon isn't running, it looks like it's being run.  Does executing 
 uvlictool clean_lic -a call the deadlock process?
 
 Also, in configuring the daemon's resolution strategy, there are 
 three options; random termination, terminate newest transaction, or 
 terminate the transaction with fewest locks.  I have chosen to 
 terminate the newest, but I was little more than flipping a coin... 
   simply using the 'first come, first server' approach.  I can't 
 seem to find anything in the documentation that would help me 
 decide which resolution strategy I *should* employ.  Any ideas?
 
 Mark Hennessey
 State of Connecticut
 DSS/MIS Child Support Systems
 Voice: 860-424-5261
 Fax: 860-424-4956
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 u2-users mailing list
 u2-users@listserver.u2ug.org
 To unsubscribe please visit http://listserver.u2ug.org/
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RE: [U2] UV dead lock daemon questions

2005-10-19 Thread John Jenkins
It's probably running in cleanup mode for individual processes as they
terminate..

Regards

JayJay

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Hennessey, Mark F.
Sent: 19 October 2005 16:37
To: u2-users@listserver.u2ug.org
Subject: [U2] UV dead lock daemon questions

In reviewing my uvdlockd.log, I see that even when the deadlock daemon isn't
running, it looks like it's being run.  Does executing uvlictool clean_lic
-a call the deadlock process?

Also, in configuring the daemon's resolution strategy, there are three
options; random termination, terminate newest transaction, or terminate the
transaction with fewest locks.  I have chosen to terminate the newest, but I
was little more than flipping a coin...  simply using the 'first come, first
server' approach.  I can't seem to find anything in the documentation that
would help me decide which resolution strategy I *should* employ.  Any
ideas?

Mark Hennessey
State of Connecticut
DSS/MIS Child Support Systems
Voice: 860-424-5261
Fax: 860-424-4956
---
u2-users mailing list
u2-users@listserver.u2ug.org
To unsubscribe please visit http://listserver.u2ug.org/
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