Currently, there is a world stop, yes. The garbage collector is parallel, but not concurrent. A concurrent garbage collector would make that disappear. How bad

Currently, there is a world stop, yes. The garbage collector is parallel, but not concurrent. A concurrent garbage collector would make that disappear. How bad it impacts you depends on the workload, personally I've never felt it. YouTube uses Go[1] and mentioned[2] world stop is significant in their case, but tolerable. [1] http://code.google.com/p/vitess/ http://code.google.com/p/vitess/ [2] https://groups.google.com/forum/?fromgroups#!topic/golang-nuts/U5ilNZpXzNU https://groups.google.com/forum/?fromgroups#!topic/golang-nu...