Performing I/O from a guest operating system is provided with QEMU.

在客户操作系统上执行 I/O 的功能是由 QEMU 提供的。

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Finally, I/O is virtualized through a lightly modified QEMU process (a copy of which executes with each guest operating system process).

最后，I/O 通过一个稍加修改的 QEMU 进程（执行每个客户操作系统进程的一个拷贝）进行虚拟化。

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Optimizations to these Linux components (such as the new o (1) scheduler in the 2.6 kernel) benefit both the hypervisor (the host operating system) and the Linux guest operating systems.

对这些Linux组件进行优化(例如2.6版本内核中的新o(1)调度程序)都可以让系统管理程序(主机操作系统)和Linux客户操作系统同时受益。

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He expects Merrill's new management, which includes President and Chief Operating Officer Stanley O'Neal, to step up layoffs.

FORBES: Magazine Article

The firm's chief operating officer, Ray O'Toole, later told the BBC it was possible that it would continue to operate the route if economic conditions improved.

BBC: East Coast rail to be state-run

With enterprise value (stock plus debt minus cash) at just seven times operating income (in the sense of Ebitda), O-I is in line with another big packager, Crown Holdings (95% of it metal), and is cheaper than Ball Corp.

FORBES: Magazine Article