How does Passivation Daemon work ?
Today we setup two new nodes in production, to serve Mashup(IAC) traffic exclusively.The passivation Daemon last run time showed ok unti 3:10 am , but that's the latest last run time. The amount of stale requestors have increased exponentially which forced us to restart nodes to be on safer side at around 4 pm - No out of memory exceptions occured.
While monitoring now at 7 pm, I see the last run time ok - on the busy node. However on the second node - which is less busy and hardly has 10 requestors , it shows passivation daemon's last run time as 4:20 pm.
There are no exceptions in logfiles of any node.
So my questions are:
1) How Passivation Daemon is supposed to work?
Does it wakes up in regular intervals or any other pattern or it wakes up only if it has certain number of pages/requestors to be passivated ?
2) What makes it to fail ?
Thanks.
I reviewed the posts below, but none of them helped.
https://pdn.pega.com/community/pega-product-support/question/how-does-passivation-work
https://pdn.pega.com/community/pega-product-support/question/how-troubleshoot-daemon
https://pdn.pega.com/support-articles/passivation-daemon-locking
http://pdn.pega.com/support-articles/passivation-daemon-not-running
P.S.: Pega 7.1.8. All times mentioned here are Eastern Times - if anyone cares.
**Moderation Team has archived post**
Today we setup two new nodes in production, to serve Mashup(IAC) traffic exclusively.The passivation Daemon last run time showed ok unti 3:10 am , but that's the latest last run time. The amount of stale requestors have increased exponentially which forced us to restart nodes to be on safer side at around 4 pm - No out of memory exceptions occured.
While monitoring now at 7 pm, I see the last run time ok - on the busy node. However on the second node - which is less busy and hardly has 10 requestors , it shows passivation daemon's last run time as 4:20 pm.
There are no exceptions in logfiles of any node.
So my questions are:
1) How Passivation Daemon is supposed to work?
Does it wakes up in regular intervals or any other pattern or it wakes up only if it has certain number of pages/requestors to be passivated ?
2) What makes it to fail ?
Thanks.
I reviewed the posts below, but none of them helped.
https://pdn.pega.com/community/pega-product-support/question/how-does-passivation-work
https://pdn.pega.com/community/pega-product-support/question/how-troubleshoot-daemon
https://pdn.pega.com/support-articles/passivation-daemon-locking
http://pdn.pega.com/support-articles/passivation-daemon-not-running
P.S.: Pega 7.1.8. All times mentioned here are Eastern Times - if anyone cares.
**Moderation Team has archived post**
This post has been archived for educational purposes. Contents and links will no longer be updated. If you have the same/similar question, please write a new post.
OCBC Bank
SG
Hello Ravi,
Passivation allows a requestor, service, or clipboard page to be saved into the PegaRULES database and reactivated later. A background process known as the passivation daemon converts the in-memory state and clipboard information into database rows, making the memory available for other uses. The reverse process is known as activation. Passivation is controlled through prconfig.xml settings. The passivation daemon wakes once a minute to handle passivation.
1. Passivation runs on time interval not on number of records.
2. There could be different reasons for it to fail.
Could you confirm whether none of the stale requestors are cleared? Are you able to see any thread dumps in PegaRULES logs due to this.
Please check whether the Master Agent daemon (also known as “Master for Agents”) running?
You may debug the passivation related issues by enabling DEBUG on below class
com.pega.TRACE.requestor_lifecycle
Intellativ
US
Thanks for responding.
ok, yeah - none of the stale requestors were cleared after the passivation daemon stopped.(see attached image).
There are no exceptions or thread dummps on PegaRULES log file.
Master Agent dameon also, I believe not running - the last run time was 1:32 pm.
System pulse and License Daemon are the ones constantly running.
Sure, I will enable the debugger and post the outcome here.
cognizant
IN
Hi sandeep,
in our application nothing is defined in prconfig.xml regarding this passivation.
I tried this DSS :"prconfig/timeout/thread" ruleset: Pega-Engine but it didnt' work . could you please help us, in what other places it could be set.
Actually we wanted to increase the passivation time .