Hello Nuno, Nuno Carvalho wrote: > On Mar 29, 2007, at 1:57 , Ingo Kampe wrote: > >> >> May be you can give an example howto set the suspect_sweep and >> suspect_time >> param in xml? I can't find that. >> >> Is this a hederachannel parameter like this: >> <chsession name="hederalayer"> >> <parameter name="suspect_sweep">2000</parameter> >> <parameter name="suspect_time">6000</parameter> >> ... >> </chsession> >> ?? >> > > Each layer is configured separately, so in the channel that you are > using you should add something like this: > <chsession name="suspectl"> > <parameter name="suspect_sweep">2000</parameter> > <parameter name="suspect_time">6000</parameter> > </chsession> > > where "suspectl" is the name of the corresponding layer in the > corresponding template. > >> I have done some further testing with the base view default setup and >> debian >> sarge, jvm 1.5. If I push the load (just CPU load!) to values around 6 >> the group >> communication breaks. Even if I set the nice level of sequoia JVM to -20 ! >> I'm really surprised how CPU load can break a communication of a >> process with >> highest available priority. >> > > The ping messages of the failure detector between the members era FIFO > ordered with the other messages (in this case, sequoia messages). If > this messages are not received in time, the membership is suspected. Are > you also loading the sequoia controllers?
No, thats it. Absolutly no load on sequoia. There are just some SELECTS without transaction from maintainance threads once in 2 minutes. May be the FIFO is blocked by somebody waiting for CPU. >> Does anybody have an idea what to fix here? BTW the same test with jgroups >> passes without problems. Jgroups communication is stable (tested up to >> a load of >> 20). >> > > You can increase the suspect timers. This should help. Thanx for your help. I will play with timeouts and repeat my tests tomorrow. )ngo
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