Ahh yes, I forgot about Yemi's spoofing code. Hacking that sounds the easiest way.
regards, Richard -----Original Message----- From: Dr. Dave Blunt [mailto:[EMAIL PROTECTED] Sent: 24 August 2006 16:58 To: ganglia-general; harper.mann; Grevis, Richard: IT (LDN) Subject: RE: [Ganglia-general] Ganglia scaling testing? Hey Richard, We were wanting to populate a gmond on a separate box that we would run some alarm code against - no gmetad on the box. I'm trying Yemi's spoof code right now to get a large number of 'hosts' set up with lots of metrics. I did look at the packet format in the source but my C is a bit rusty. I got bogged down in tcpdump/tcpreplay without much progress. Thanks, Dave. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, August 24, 2006 4:09 AM To: [EMAIL PROTECTED]; [email protected]; Dr. Dave Blunt Subject: RE: [Ganglia-general] Ganglia scaling testing? Harper, I think that the RRD disk I/O from gmetad will be the first limit you reach. If you want to load up the gmond process, you could write a program to send properly formatted gmond packets but with a spoofed and always changing source address. the headnode gmond only determines the host from the source address of the packet. I am not sure the of the best way to do this - either a standalone program that sends packets flat chat where the contents were snarfed from real gmond packets, or maybe a hack to gmond itself. Simulating on the server/gmetric side is easier - just write a script that contructs the right XML with thousands of hosts and presents it on a port, and point gmetad to that port. regards, richard grevis -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Harper Mann Sent: 23 August 2006 18:08 To: [email protected]; Dr. Dave Blunt Subject: [Ganglia-general] Ganglia scaling testing? Hi, We're supporting a couple of sites with several hundred servers monitored with Ganglia. So far, ganglia is working well and easily keeping up with the load. We want to run some scaling tests and thought it would be good to simulate a large gmond with a couple thousand servers reporting before we have to support that many. Is there a way to simulate multiple servers reporting to a gmond? If not, what do you think might be the best approach for this? We could take a crack at creating it. Thanks for any help. Regards, - Harper Harper Mann Groundwork Open Source 510-599-2075 (cell) ------------------------------------------------------------------------ - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Ganglia-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ganglia-general ------------------------------------------------------------------------ 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. ------------------------------------------------------------------------
