Hi Richard, seems bankers still have money to burn :-) But your grid description definitely sounds impressive.
What kind of "HPC" do you perform on Windows? Cheers Martin --- [EMAIL PROTECTED] wrote: > Re: fined grained data - > > At our site we mostly set 5 or 10 second polls in gmetad, > and the same in the gmond confs. This was requested by our > users. And yes, we have adjusted our RRD configuration in gmetad.conf > to allow a few weeks of 5 second data. > > Each of our ganglia severs handle up to 3000 hosts, although > I once earlier had about 5,000 hosts on one servers. The > monitored hosts are almost all windows servers doing HPC. > > The ONLY way that this is even remotely possible is by > 1) reducing the number of collected metrics to a bare > essential minimum for HPC (cpu, network, and I/O). > The cygwin agent is unable to give much more anyway. > 2) The RRD storage on servers of up to 100 gigabytes, is > located on fast SAN storage. The sustained I/O has been up to > 20 gigabytes a second sometimes. And as we all know, > RRD stands for "Rapid Ruination of Disks". > > Why did users want such fine grained data? Well some groups wanted > fine grained data to do "after the fact" forensics, some wanted > immediacy to the graphs, some wanted to make sure that load spikes > did not disappear, and others didn't know what they wanted. > But now our user base is experienced with ganglia, some are reducing > their poll rate (Some users want capacity trending only, say). > > Richard Grevis > Production Architecture > Barclays Capital, Canary Wharf, London, E14 4BB > *DDI : +44 (0) 20 7773 4915 > * richard.grevis > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On > > Behalf Of Martin Knoblauch > > Sent: 16 January 2007 09:44 > > To: Caleb Epstein; Grevis, Richard: IT (LDN) > > Cc: [email protected] > > Subject: Re: [Ganglia-developers] Query "From->To" > > > > > > Richard, > > > > I second the desire to have such a feature. But: where do > > you get the fine grained data for "past periods" from? You > > need to add datapoints to the RRDs. How big are your > > databases compared to the default ones? > > > > But yes - useful feature. > > > > Cheers > > Martin > > --- Caleb Epstein <[EMAIL PROTECTED]> wrote: > > > > > On 1/15/07, [EMAIL PROTECTED] > > > <[EMAIL PROTECTED]> wrote: > > > > The changes have been useful to us internally here, but our HPC > > > environment > > > > is not really like most of the HPC clusters in academia and > > > elsewhere, > > > > which means I am unsure of the likely level of interest. Also a > > > change > > > > like the from/to mod may be too much of a change for people. > > > > > > I've always wished for a feature like this, personally. I think > it > > > would be a useful addition. > > > > > > -- > > > Caleb Epstein > > > > > > > > -------------------------------------------------------------- > > ----------- > > > Take Surveys. Earn Cash. Influence the Future of IT > > > Join SourceForge.net's Techsay panel and you'll get the chance to > > > > share your opinions on IT & business topics through brief surveys > - > > > and earn cash > > > > > http://www.techsay.com/default.php?page=join.php&p=sourceforge > &CID=DEVDEV > > _______________________________________________ > > Ganglia-developers mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/ganglia-developers > > > > > > > ------------------------------------------------------ > Martin Knoblauch > email: k n o b i AT knobisoft DOT de > www: http://www.knobisoft.de > > ------------------------------------------------------------------------ > - > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to > share > your opinions on IT & business topics through brief surveys - and > earn > cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDE > V > _______________________________________________ > Ganglia-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ganglia-developers > ------------------------------------------------------------------------ > For more information about Barclays Capital, please visit our web > site at http://www.barcap.com. > > Internet communications are not secure and therefore the Barclays > Group does not accept legal responsibility for the contents of this > message. Although the Barclays Group operates anti-virus programmes, > it does not accept responsibility for any damage whatsoever that is > caused by viruses being passed. Any views or opinions presented are > solely those of the author and do not necessarily represent those of > the Barclays Group. Replies to this email may be monitored by the > Barclays Group for operational or business reasons. > ------------------------------------------------------------------------ > > ------------------------------------------------------ Martin Knoblauch email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de
