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Re^2: A distributed design challenge

by Ovid (Cardinal)
on Jul 02, 2012 at 18:28 UTC ( #979490=note: print w/replies, xml ) Need Help??


in reply to Re: A distributed design challenge
in thread A distributed design challenge

You are right that 36 servers is overkill, but we have a large setup of servers designed to handle very large loads and it was easier to put our software on these servers than to design a smaller system. Plus, the load I mention is actually very light. We've restricted the requests for the test. In a full-scale production system, we expect at least two orders of magnitude more requests.

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Re^3: A distributed design challenge
by BrowserUk (Pope) on Jul 02, 2012 at 19:33 UTC
    Plus, the load I mention is actually very light. We've restricted the requests for the test. In a full-scale production system, we expect at least two orders of magnitude more requests.

    The 40,000 figure I used took that 2-orders increase into account.

    You are right that 36 servers is overkill, but we have a large setup of servers designed to handle very large loads and it was easier to put our software on these servers than to design a smaller system.

    I can understand the motivation for re-using an existing setup if it is lightly loaded.

    That said, the whole problem becomes significantly easier to program by utilising SMP shared memory to hold the budgets; And much easier to guarantee if a dedicated machine handles it rather than relying upon excess capacity on the other systems where spikes in the other applications might break this applications latency requirements.

    I'd be tempted to try and concentrate the other application(s) onto 34 boxes and filch 2 to dedicate for this application in a primary + hot failover setup.

    Of course, I know nothing of the other applications or the internal politics involved that likely make that impractical.


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[marto]: yes, the last time I saw them was in Berlin a few years ago, at the old Olympic stadium
[marto]: After Sunday I don't think I'll go see them again :)
[LanX]: Corion: come on, people are people! ;)
[Corion]: Naah, I think it's still an OK show so far. Their new songs aren't exactly great, but I'm not going there for new material anyway ;)
[marto]: I got the feeling from the last show that for big sections of it, they were not really into what they were doing
[Corion]: LanX: Sure, they can bask in my Halo
[marto]: more so than the previous show I saw
[Corion]: marto: Well, I think they go a tour every two years and I think it's hard to even get a connection with the crowd at a 20k people concert... But maybe after this time I'll stop too ;)
[Corion]: I still have to see the Pet Shop Boys live before they stop touring at all
[marto]: yeah, I think that as a group creatively they're done. I can understand how it'd be hard to stop the process, album/tour, album/tour, if that's pretty much all you've ever done :)

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