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General software and network General OS-independent software and network questions, X11, MTA, routing, etc. |
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what's behind scalability ?
I hope someone would help me learn about those determining factors that influence an OS scalability , more precisely the BSDs.
Million Thanks |
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This is a broad topic. Can you be more specific? Are you most interested in network throughput, database sizes, filesystem sizes, realtime uses, or something else altogether? Specificity will help frame discussion.
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I mean network scalability
What makes a OS unscalable or more likely to have a scalability issue? what prevents a OS from being scalable enough toward changes ? Thanks Last edited by pawaan; 23rd January 2013 at 02:53 PM. |
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Here are a couple of factors:
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Thanks ocicat.what you penned helps me figure out about the issue and I hope you'll expand a bit this part:
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If I am to judge which is most scalable among BSD derivatives , how should I proceed to achieve an objective conclusion ? I'm looking forward to more enlightenment. So thankful to you. |
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Benchmark testing is easy. Obtaining valid results is much more difficult. Be very cautious with results obtained from any synthetic network load induced with software tools. Deploying your BSD systems on your production network would be better. A synthetic network load must model your real load closely. Not just number of packets over time and their size, but packet direction and routing headers must also be considered. See http://www.daemonforums.org/showthread.php?t=7618 for an example of a benchmark using a synthetic network load which does NOT closely model any real network. Last edited by jggimi; 23rd January 2013 at 05:49 PM. Reason: clarity; typo |
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It should also be understood that tweaking/optimizing the network stack as implemented by the kernel is a much harder problem to solve. In comparison, writing driver code is more straight-forward. Not that either is simple, but the range of problems needing to be addressed by the kernel is far more broad. |
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