Forwarding again..... --------- Original Message --------- Subject: RE: [users] opensaf failover parameter tuning From: [email protected] Date: 7/18/18 2:21 am To: "[email protected]" <[email protected]>
Hi Jim, Greetings !! For "overall failover timeline", all the entities coming across the path of failover should be considered. - Fault detection: FMS - Fault propagation: RDE - Fault recovery: AMF (AMF Director, AMF Node Director) - Fault recovery agents: Applications The complete failover path is FMS->RDE->AMF->Applications. [I assume that the calculation of downtime starts from fault detection(by FMS) till AMF provides CSI assignments to all the applications successfully. If the calculation of downtime is from fault detection(by FMS) till AMFD, then please ignore applications.] Changing the priority of directors/servers/node-directors is also system dependent(kind of system load, applications(of different priorities) running, etc.) and need fine-tuning accordingly. Please find the reference (though not complete) at sectio '3.7 Tunable OpenSAF configuration parameters' of OpenSAF_Overview_PR.odt available at https://sourceforge.net/p/opensaf/documentation/ci/default/tree/ >>For example, are there minimum values that we should not go below, etc. Sorry, couldn't understand it. The priority will need to be increased for decreasing the failover time. Hope this helps. Thanks, Nagendra, 91-9866424860 High Availability Solutions Pvt. Ltd. - OpenSAF support and services --------- Original Message --------- Subject: [users] opensaf failover parameter tuning From: "Carroll, James R" <[email protected]> Date: 7/17/18 1:04 am To: "[email protected]" <[email protected]> Hi All, We are trying to increase the speed at which OpenSAF will recognize a failover, and respond accordingly. We have begun adjusting the following parameters in support of our overall failover timeline: 1. Tipc link_tolerance 2. rde.conf parameter RDE_DISCOVER_PEER_TIMEOUT (default is 2s). In addition, the OpenSAF documentation 00-README.conf, appears to show the following for the RDE director: 1. OSAFRDED_SCHED_PRIORITY 0 2. OSAFRDED_SCHED_POLICY 0 (SCHED_OTHER) Is there any additional documentation available that discusses the RDE, and these default settings? Is there any documentation that show specifies how to tune these (and possibly other) parameters in order to achieve timelines? For example, are there minimum values that we should not go below, etc. Thanks. Jim ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Opensaf-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/opensaf-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Opensaf-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/opensaf-users
