Step two: data is copied from the kernel buffer into the user buffer, and the read system call returns. The return from the call caused a context switch from kernel back to user mode.
步骤二：数据从内核空间缓冲区复制到用户空间缓冲区，之后系统调用read返回，这导致了从内核空间向用户空间的上下文切换。
A simple solution for buffer overflows is to switch to a language that prevents them.
针对缓冲区溢出的一种简单解决办法就是转为使用能够防止缓冲区溢出的语言。
By combining data from filemon, iostat, and DB2 snapshot monitoring with a buffer pool monitoring switch, you can develop the following information.
通过将来自filemon、iostat和DB 2快照监视的数据与缓冲池监视开关相结合，可以得到以下信息。
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