在libcurl开始之前，libjpeg就已经完成对缓冲区的处理。fflush看起来有些多余，但是可以确保剩余的数据仍在内存中。

Libjpeg finishes touching the buffer before libcurl starts, and that fflush that might otherwise have seemed redundant ensures that any remaining data are in memory.

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但是，一旦内存耗尽，尽管还有剩余的CPU或存储容量，没有更多的虚拟机可以安装在该服务器上，调查表明这会导致服务器没有被充分有效地利用。

But once memory is exhausted, no more VMs can be installed on that server, regardless of remaining CPU or storage capacity, and the survey suggests this leads to servers being inefficiently utilized.

youdao

这需要更多内存，因此剩余内存更少，难以支持用户或应用程序的增长。

Thus, less memory is available for additional and future user or application growth.

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