Status: New
Owner: ----
New issue 3207 by [email protected]: native context separation Fatal Error
http://code.google.com/p/v8/issues/detail?id=3207
I'm a Node.js user and I can consistently create a state in v8 that
triggers an infinite series of garbage collections with a corresponding
100% CPU usage. I will summarize the situation here, but there is a lot
more information that I have posted in a Joyent Node.js issue:
https://github.com/joyent/node/issues/7274
The problem happens in all of the Node.js 0.11 released versions, up to and
including the latest version available via the GitHub master branch. I
believe this code uses v8 version 3.22.24.
The one requirement is that the -harmony_generators (or the equivalent -
harmony) flag be used. Without it, the code runs fine. It is not necessary
for the code to use any Harmony features.
The real breakthrough came when I also used the -
verify_native_context_separation v8 flag. This caused the printout of a v8
fatal error from the garbage collector, shortly before the infinite series
of garbage collections started. I believe the garbage collections are a
consequence, not the cause.
None of the programs that I have seen the fatal error on use any native C
code modules. They are all 100% Javascript. If they have something in
common, it is that the amount of code is relatively non-trivial.
If I had to point to a single NPM module as likely to trigger the fatal
error, I would point to the lodash module. But frustratingly, loading that
module by itself works just fine.
So the smallest program that will trigger the fatal error is just:
require("bookshelf");
One of the first things that the Bookshelf.js module does is load lodash.
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