Rory,
I am trying to understand more from architectural point of view, as far as my understanding goes. Spectrum is a multi threaded system from its client prospective, like one click/SRM, SSAPI etc, but when it comes to it internal architecture it is just single threaded: my questions: 1. Do you have idea while accesing SSdb is it again single threaded? 2. Do you have idea while accesing DDM is it again single threaded? 3. Spectrum SNMP/ICMP communication to infrastructure components (servers/routers etc) is through DCM is it also single threaded. 4. What is the architecture change in v9? Can you explain more in detail. 5. What kind of advantage the designers would have got by designing it as single threaded, or its just design at (whatever time they would have designed it) Regards, Nikhil On Wed, May 13, 2009 at 6:07 AM, <[email protected]> wrote: > Spectrum has its own moot threading system, this means that the application > is multithreaded, but at the OS level it just uses a single native thread > and as sucn only uses a single CPU. For this reason clockspeed is your > friend and unfortunately whilst the T5120 are nice servers each processor is > relatively slow and you are going to run out of SpectroSERVER capacity > fairly quickly. > > This is the main reason we have switched to Linux. The intel platforms have > fewer cores, but much faster processors. > > V9 is slightly better as CA are moving away form their moot threading and > using more native threading. For example all of the SNMP polling inv9 uses > native threading. Our experience is that this does not give much additional > performance as the majority of the CPU is still attributes to one thread. > Also we have a number of tickets open around SNMP issues in v9 that might be > related to this move to native threading. > > Regards, > > Rory > > -----Original Message----- > From: Hofmann, Berthold [mailto:[email protected]] > Sent: 13 May 2009 08:57 > To: spectrum > Subject: [spectrum] Server size > > Hello all, > > we have about 1800 device models, and 120 000 models. When I generate a > Health Report in > Pview, I get the following message: > The SpectroSERVER is currently running at full capacity and no other models > or additional work should be introduced. Steps should be taken to minimize > the current workload or some of the models/work may have to be moved off to > an additional SpectroSERVER. SPECTRUM support can perform a sizing to verify > that your machine configuration is adequate for your existing database. > Spectrum is running on a sun T5120 with 16 Gbyte Ram. > Is this a problem of the machine, because it has 64 virtual CPU´s but only > one > is normally used by spectrum, or is this caused by a limit in spectrum. > Has anyone more devices on one spectrum server, and what is the hardware? > > > Best Regards > > Berthold Hofmann > > *********************************************** > Siemens AG > > --- > To unsubscribe from spectrum, send email to [email protected] with the > body: unsubscribe spectrum [email protected] > _______________________________________________ > > This e-mail may contain information that is confidential, privileged or > otherwise protected from disclosure. If you are not an intended recipient of > this e-mail, do not duplicate or redistribute it by any means. Please delete > it and any attachments and notify the sender that you have received it in > error. Unless specifically indicated, this e-mail is not an offer to buy or > sell or a solicitation to buy or sell any securities, investment products or > other financial product or service, an official confirmation of any > transaction, or an official statement of Barclays. Any views or opinions > presented are solely those of the author and do not necessarily represent > those of Barclays. This e-mail is subject to terms available at the > following link: www.barcap.com/emaildisclaimer. By messaging with Barclays > you consent to the foregoing. Barclays Capital is the investment banking > division of Barclays Bank PLC, a company registered in England (number > 1026167) with its registered office at 1 Churchill Place, London, E14 5HP. > This email may relate to or be sent from other members of the Barclays > Group. > _______________________________________________ > > --- > To unsubscribe from spectrum, send email to [email protected] with the > body: unsubscribe spectrum [email protected] > -- Nikhil Mehra "The only Constant in Life is CHANGE!" "Whether it is mainframe, client-server, distributed, grid or web services computing — none of it works without the network." --- To unsubscribe from spectrum, send email to [email protected] with the body: unsubscribe spectrum [email protected]
