[sldev] SNOW-2: getting to the bottom of the curl crashers
Sheet Spotter
sheet.spotter at gmail.com
Tue Jun 9 20:37:39 PDT 2009
The main starting point for information about the new Snowglobe viewer is:
http://wiki.secondlife.com/wiki/Snowglobe
You can browse the source code for Snowglobe (also known as the http-texture
branch) here:
http://svn.secondlife.com/trac/linden/browser/projects/2009/http-texture
You can use an SVN client to check out the source code from:
http://svn.secondlife.com/svn/linden/projects/2009/http-texture
Snowglobe now has its own section in the JIRA. It might also be helpful to
prefix the Snowglobe related posts to SLDev with "[sldev][SNOW]" to group
the related emails.
Sheet Spotter
-----Original Message-----
From: sldev-bounces at lists.secondlife.com
[mailto:sldev-bounces at lists.secondlife.com] On Behalf Of Paul Oppenheim
(Poppy Linden)
Sent: June 9, 2009 8:34 PM
To: Rob Lanphier
Cc: Second Life Developer Mailing List
Subject: Re: [sldev] SNOW-2: getting to the bottom of the curl crashers
any link(s) to the relevant source?
+ poppy
Rob Lanphier wrote:
> Hi folks,
>
> We're trying to decide just how important SNOW-2 is:
> http://jira.secondlife.com/browse/SNOW-2
>
> This is our tracking issue for the vague crash reports we have involving
> curl. We're not getting good stack traces or anything like that, and
> people have generally not been complaining about this particular problem.
>
> However, based on some evidence that Merov noticed and is digging into
> now, it would seem that the curl crashers seem to happen in the map code
> (because secondlife.log indicates to be accessing S3 at the time of the
> crash). Furthermore, the problem generally might be linked to improper
> use of curl in the viewer (e.g. overusing the same curl handle). This
> might be a case where gentle use of the map works like a charm, but
> using the map while chatting and teleporting and using the inworld web
> browser may be another story altogether.
>
> So, we'd like you to help by hammering on this issue, and reporting your
> results (either positive or negative) in SNOW-2. In particular, some
> things to try:
> 1. Lots of things that would use HTTP simultaneously (e.g moving around
> in the map, then quickly teleporting before the map loads in all of the
way)
> 2. Really use the map. Zoom out, zoom in, try to find regions with
> missing textures
> 3. grep the code yourself for libcurl usage, and figure out other ways
> of torturing that code.
>
> Let's figure out if we need to figure this problem out before declaring
> this "Snowglobe 1.0".
>
> Thanks!
> Rob
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