Messages in this thread | | | Subject | Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) | From | Dave Hansen <> | Date | Fri, 08 Sep 2006 08:30:50 -0700 |
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On Tue, 2006-09-05 at 17:17 -0700, Rohit Seth wrote: > I'm wondering why not have different processes to serve different > domains on the same physical server...particularly when they have > different database to work on.
This is largely because this is I think how it is done today, and it has a lot of disadvantages. They also want to be able to account for traffic on the same database. Think of a large web hosting environment where you charged everyone (hundreds or thousands of users) by CPU and I/O bandwidth used at all levels of a given transaction.
> Is the amount of memory that you save by > having a single copy that much useful that you are even okay to > serialize the whole operation (What would happen, while the request for > foo.com is getting worked on, there is another request for > foo_bar.com...does it need to wait for foo.com request to get done > before it can be served).
Let's put it this way. Enterprise databases can be memory pigs. It isn't feasible to run hundreds or thousands of copies on each machine.
-- Dave
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