[Tilesathome] New features of the t at h client

[Milenko]

I saw the upload to folder option in the configs and was wondering what it 
was for.  What's the envisioned usage for that option?  Will one client be 
able to handle uploads from multiple other clients (currently 6 w/ a total 
of 11 CPU cores for me, but will be more soon) at the same time?  I'd think 
that when the queue gets backed up on the server and we're stuck with 600 
second retries that the client tasked with the uploads would fall behind 
very quickly.  Possibly to the point of exceeding the 1.5 hour retry limit. 
Is the "upload client" expected to just be a regular client running in loop 
mode, or is there a special mode for the client that will be handling 
uploads?

Sorry for all the questions, it sounds like a neat feature for those of us 
with small farms of machines, but I'm not clear on what the exact usage 
should be.

The API changes should help out quite a bit.  The inkscape preferences 
problem is still annoying, but I've fixed it on my machines by setting the 
folder to read-only so inkscape can't kill it if it crashes.  This seems to 
work well for now since I don't use inkscape for anything else.  I had a 
client make it over 1900 consecutive loops before crashing the last couple 
days, so I guess that means the client is getting much more stable than it 
used to be.

-Jeremy

----- Original Message ----- 
From: "Dirk-Lüder Kreie" <osm-list at deelkar.net>
To: <tilesathome at openstreetmap.org>
Sent: Tuesday, December 11, 2007 9:29 AM
Subject: [Tilesathome] New features of the t at h client


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Since there has been some time since I last updated what went on coding
the client I'll do a new update about what has happened recently in
client development.
I'm not going to catch up every change since my last update on the
topic, just what I can think of that might be of interest. For detail
check the trac svn history of the client[1]

The current version is revision 6022, still called "Oslo"

It supports uploads to a directory (check sample config) instead to the
server. This is intended for multiple clients that run on one or more
computers connected via LAN or similar where only one t at h process gets
charged with the upload to the world. If you run multiple clients on one
host be sure to give each instance it's own working directory!

Secondly a delay has been introduced. A failed API connection results in
  a delay of 60 seconds, a second failure in 240 seconds and
exponentially growing to just over one hour (to a total delay of about
1:30 hours or something) The delay will be tweaked based upon future
experience.
(Thanks go to "Milenko" for the patch used as a basis for this behaviour)

Also the client now prints a warning in xy mode if the zoom level has
been omitted.




[1]
http://trac.openstreetmap.org/changeset/6022?new_path=applications%2Frendering%2FtilesAtHome
- --

Dirk-Lüder "Deelkar" Kreie
Bremen - 53.0952°N 8.8652°E

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