[BC] ftp sites

[Ron Cole]

Now you are going to make me go look at my FTP config.
I was aiming at 20/80% FTP / WWW config on a DS-3 Connection.

Ron


On 9/15/06, Cowboy <curt at spam-o-matic.net> wrote:
>
> On Friday 15 September 2006 03:12 pm, Harold Hallikainen wrote:
>
> > Don't FTP sites usually have some sort of limit on the number of
> > simultaneous users?
>
> If properly configured, yes.
>
> > If so, a "slow" streaming playback would keep a user
> > using the ftp connection for longer than one using a quick download.
>
> No.
> The connections are dynamicly queued.
> My FTP server is set at 4 connections. That means that it will serve
> four streams simultaneously, but will queue however many requests
> there are.
> When one of the active four blocks ( buffer full ) that connection is
> pushed
> onto the queue, and the next connection on the queue is served, until one
> of the active four blocks for whatever reason.
> This swapping continues until a transfer is completed, then that
> connection
> is deleted from the queue.
>
> It's not a windows-ish time slice "fairness" thing.
> It's much more a real time thing. Run the current thread until it either
> completes or blocks, then run the next thread until IT either completes
> or blocks, subject to a higher priority interrupt, in which case the
> current
> thread is blocked until the higher priority process either completes or
> blocks, then fall back to the scheduler.
>
> When a buffer fills, that stream blocks. When the buffer becomes unfull,
> that
> stream CAN run again, but it won't until its turn in the queue, which
> might be
> immediately, or it might be some time later. There is no deterministic
> deadline,
> so it's not real time, as a lost or dead connection can be re-established
> at some
> unknown time in the future and resumed.
>
> --
> Cowboy
>
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