[Openstreetmap] Server Performance

Andy Robinson Andy_J_Robinson at blueyonder.co.uk
Tue Dec 20 08:21:41 GMT 2005


Steve,

I ran into the same complete block for the first time ever last night. Have
had plenty of times when it's been painfully slow during the evening but
last night it just would not play ball at all. Didn't appear to be any
specific aspect, just every component seemed to be less than responsive. I
gave up at around 11:30pm GMT having I guess started at around 10:00pm

Andy

Andy Robinson
Andy_J_Robinson at blueyonder.co.uk 

>-----Original Message-----
>From: openstreetmap-bounces at vr.ucl.ac.uk [mailto:openstreetmap-
>bounces at vr.ucl.ac.uk] On Behalf Of SteveC
>Sent: 20 December 2005 03:47
>To: Etienne Cherdlu; Johnny Doe
>Cc: openstreetmap at vr.ucl.ac.uk
>Subject: Re: [Openstreetmap] Server Performance
>
>* @ 19/12/05 11:05:41 PM openstreetmap-L at gj0.net wrote:
>> I just added a whole lot of segments for a complex motorway interchange
>> using the java applet.  This required a lot of painstaking and detailed
>> work.  I then panned the view area and was dismayed to find that not only
>
>I would be more than dismayed.
>
>I've synced the code used to generate the dev server with the live
>machine. I've added a bunch of code to do logging server side, and the
>applet will remove a segment if it didn't get created instead of just
>leaving it there so you can tell if it was successful or what.
>
>Hopefully logging will show up what is going wrong, because I havn't
>been able to reproduce it. What time (GMT) should I try to see when it's
>slow? Please mail me your problems, including java console output. I
>*am* looking at it.
>
>> What is it that is making the server slow anyway?  I've never seen more
>than
>> about 4 people editing at any one time, and I'm sure there can't be than
>> many people viewing the maps yet.  Is there some batch process that kicks
>in
>> to rebuild tiles or something?
>
>No, that's on the tile server. It might be something on the database
>server... or a backup script. Anything to figure out the timing of these
>problems is helpful.
>
>> This problem really needs addressing as an absolute priority.  The most
>
>It is being dealt with, I know it sucks, I will fix it as soon as I
>figure out what's going on.
>
>* @ 19/12/05 11:56:59 PM uucp1 at yahoo.com wrote:
>>
>>  I had a similar painful experience, and IMHO the main
>> problem
>>  is the download of tiles into the applet, which can't
>> be
>>  switched off.
>>  The http://brainoff.com/osm/change is so much
>>  better, because of the direct tile download.
>>  Unfortunately there is
>>  no comparable 'applet' functionality in the osmeditor
>> :(
>
>It is something that's also a high priority...
>
>have fun,
>
>SteveC steve at asklater.com http://www.asklater.com/steve/
>
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