我知道GC.enable/deisable，但有没有什么方法可以更详细地控制Ruby1.9垃圾收集器？
在分析我的代码（使用perftools.rb）时，我注意到GC最多占总样本的30%，我想看看是否可以调整GC来减少这个数字。是否有任何环境变量或其他方式可以像REE一样设置堆槽的数量、malloc限制等？
不
没有办法调整1.9.0–1.9.2 GC。但是，您可以编译一个自定义VM，该VM使用此补丁。
是的，简而言之。
首先，定义GC行为的基本常数（显示默认值）：
37的一个故事向伙计们发出了信号，这可能会对你有所帮助。他们按时使用手动GC调用（GC.start），而不是内存大小，并获得了巨大的提升。
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