[Freeciv-Dev] Re: (PR#5081) huge send buffer

["Christian Knoke" <chrisk@xxxxxxxxx>]

Just some remarks:

On Wed, Aug 13, 2003 at 11:08:05PM -0700, kersten@xxxxxxxxxx wrote:
> On Wed, 13 Aug 2003, Vasco Alexandre da Silva Costa wrote:
> > On Wed, 13 Aug 2003, Christian Knoke wrote:
> > 
> > >
> > > CVS 13 AUG 2003 GTK 1
> > >
> > > big game, slow machine, one player client, two observer clients.
> > >
> > > at turn done, I kill both observer clients:
> > >
> > > Spiel gespeichert als 'carthago+1730.sav.gz'
> > > >
> > > 2: Verbindung verloren: peter von localhost (Spieler John A. MacDonald)
> > > (Beobachter).
> > > >
> > > 2: Verbindung verloren: paul von localhost (Spieler Charlemagne)
> > > (Beobachter).

I killed the client here.
But has the server really closed the connection at this point?

> > > >
> > > 2: Verbindung verloren: paul von localhost (Verbindung unvollständig).
> > > >
> > > 1: cut connection paul von localhost (Verbindung unvollständig) due to 
> > > huge
> > > send buffer (2)

It looks as it didn't, couldn't flush the buffer ...

> > Basically, for whatever reason, that client was not receiving fast enough.
> > We limit the size of the send buffers in order to not waste too much
> > memory in the server. No, they are not statically allocated.
> > 
> > ---
> > Vasco Alexandre da Silva Costa @ Instituto Superior Tecnico, Lisboa
> > 
> 
> Same with me here: large game, no observers, fast machine, server running 
> on localhost; client takes forever to display the movements of all units. 

How fast is your machine?

> In the first part of the move they crawl, then suddenly they speed up. The 
> machine takes 100% CPU. That's a lot. The server disconnects the client 
> almost every turn due to ping timeouts.

Anybody else seeing ping timeouts? I didn't. You refer to CVS version I
suppose.

> Restarting the client from scratch 
> speeds things up, reconnecting from the existing client makes it worse. 

*Maybe* related to PR#3769, what i consider a serious bug, and the problem
also emerges only after 2 or 3 turns?

> After a few turns the cycle restarts. Memory consumage rises as well. I'm 
> using the GTK 2.0 client.

Memory consumage I see here, too, occasionally, but this is hard to
quantisize due to virtual memory management.

> Any clues?
> -- 
> Pieter J. Kersten
> 

Christian

-- 
Christian Knoke          * * *          http://www.cknoke.de
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