[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] xenctld - a control channel multiplexing daemon
[Ronald == rminnich@xxxxxxxx on Mon, 24 Jan 2005 10:04:29 -0700 (MST)] Jared> Ron, is your performance concern because large clusters need Jared> to pass a very high volume of control messages? Ronald> re-reading this, however, I think my concerns about the Ronald> extra daemon shrink into insignificance when I think about Ronald> Python-based Xend ... I think most people are agreed that a non-Python control infrastructure will be developed in the not-so-distant future. So to the extent your concerns about multiple daemons apply in a non-Python environment, they should be addressed. Ronald> The issue is that, in any large scale cluster, if you have Ronald> enough processes running besides your application on the Ronald> nodes, then the act of scheduling those processes -- even Ronald> for select calls that return instantly Ronald> -- can derange the application performance. It may be that clustering people need a whole different toolset. If you were trying to minimize process count, then you probably wouldn't even want xcs, a multiplexing switch anyway. Indeed, why multiplex at all? You might use a single control mechanism, preferably combining whatever subset of xcs, xensv, xm, etc you needed. I'll leave it others to figure out what all this means for xcs's future. Thanks for your cluster scheduling overview; it was helpful. -- jared@xxxxxxxxxxx http://www.geekcode.com/geek.html -----BEGIN GEEK CODE BLOCK----- Version: 3.12 GCM/CS/B d s:++>+ a- C++(++++)$ ULBSH++++ P+++ L+++ E++(+++) W++++ N- !o !K w !O M V PS+++(-) PE++(--) Y+ PGP>++ t@ 5 X+ R>+ tv++>-- b>++ DI+ D- G e++ h- r++>+++ y+++ ------END GEEK CODE BLOCK------ ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/xen-devel
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