On Mar 16, 4:46 pm, Jimb Esser <[email protected]> wrote:
> The server in question is not an http server, but a back-end
> simulation server running physics simulation for an online game using
> a Bullet native library.  Yeah, I know, not exactly a typical (or
> perhaps wise...) use of node.js.  We're 95% certain the Bullet module
> is the culprit, but that is hundreds of thousands of lines of 3rd
> party C++ code, not something feasible to poke in, and, like most
> physics simulations, not particularly deterministic when combined with
> the randomness of network latency and real user actions.  Stand alone
> stress tests we've tried never exhibit the problem, and since it takes
> a fully loaded server a day to exhibit it, it's not likely to
> reproduce in a development environment.  That being said, it
> consistently does reproduce on the production servers, so that is,
> theoretically, an easy way to debug it with post-mortem debugging
> (albeit with a day-long turn-around to test fixes).  Heap dumps are a
> much more reliable way of tracking down heap issues in a large system
> than any "poke at different parts of the system at random" method, I
> was just hoping there was an easy way to get them reliably...

FWIW I wonder if either of these javascript bullet ports are worth
trying/looking into?: https://github.com/adambom/bullet.js/ and
https://github.com/kripken/ammo.js/

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