获取当前的 ruby​​ 进程内存使用情况 [英] Get current ruby process memory usage

问题描述

我想格式化我的 Logger 输出，以包含当前内存使用情况，作为长期运行过程的一部分.

I'd like to format my Logger output to include the current memory usage, for part of a long-running process.

Ruby 有没有为此内置任何东西，有点像 PHP 的 memory_get_usage()?还是我必须执行一些 shell 命令才能从 ps 获取它?

Is there anything built-in to Ruby for this, a bit like PHP's memory_get_usage()? Or do I have to execute some shell commands to get it from ps?

推荐答案

一年前尝试解决这个问题的时候，我在网上做了大量的研究和 API 挖掘，结果只能通过系统调用 ps 来解决.

When trying to solve this problem a year ago, I did a lot of online research and API digging and was only able to solve it via a system call to ps.

在 OS X 10.7.2 和 Red Hat 4.1.2-13(在 EC2 上):

In both OS X 10.7.2 and Red Hat 4.1.2-13 (on EC2):

pid, size = `ps ax -o pid,rss | grep -E "^[[:space:]]*#{$$}"`.strip.split.map(&:to_i)

这将获取进程的驻留内存大小(以千字节为单位)并将其放入大小变量中.

This fetches and places the resident memory size of the process in kilobytes into the size variable.

稍加努力就可以清理，但大部分时间都花在调用 ps 并捕获其输出上，所以我认为不值得花时间.

With a little effort this could be cleaned up, but most of the time is spend calling ps and capturing its output, so I don't think it is worth the time.

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