Re: [Openais] Request of information about rrp mode passive versus rrp mode active

2013-12-02 Thread Jan Friesse
Alain, Moullé Alain napsal(a): > Hi > Thanks Steven and Jan. > > OK, so "passive" mode seems to be more safer for now ... > > So questions about passive mode, just to clarify completely the behavior > (I think it could be useful for all users) : > > 1/ in the case both networks are up and worki

Re: [Openais] Request of information about rrp mode passive versus rrp mode active

2013-11-29 Thread Moullé Alain
Hi Thanks Steven and Jan. OK, so "passive" mode seems to be more safer for now ... So questions about passive mode, just to clarify completely the behavior (I think it could be useful for all users) : 1/ in the case both networks are up and working, is by default the ring 0 used at first, an

Re: [Openais] Request of information about rrp mode passive versus rrp mode active

2013-11-27 Thread Steven Dake
On 11/27/2013 08:20 AM, Moullé Alain wrote: Hi, the man page of corosync.conf gives : "Active replication offers slightly lower latency from transmit to delivery in faulty network environments but with less performance. Passive replication may nearly double the speed of the totem protocol if

Re: [Openais] Request of information about rrp mode passive versus rrp mode active

2013-11-27 Thread Jan Friesse
Alain, passive mode is much better tested. Another big plus of passive is, that if one network becomes faulty, passive makes progress (one packet is send thru active device, another via faulty - this is not delivered but resend via active device, ...). Active RRP waits until enough failures and the

[Openais] Request of information about rrp mode passive versus rrp mode active

2013-11-27 Thread Moullé Alain
Hi, the man page of corosync.conf gives : "Active replication offers slightly lower latency from transmit to delivery in faulty network environments but with less performance. Passive replication may nearly double the speed of the totem protocol if the protocol doesn’t become cpu bound" OK b