High Memory Use in Windows Is Not a Fault, Microsoft Says
内存占用 90% 不是坏事，微软解释了为什么
微软 Windows 负责人解释：高内存占用通常是系统主动缓存，不是内存不足。判断电脑是否健康看响应速度，而非剩余内存；真正危险的是可用内存接近零、已提交逼近上限。
Windows keeps data in RAM on purpose so it does not have to read from the drive. Fill the desk, Microsoft argues; the question is whether the machine still responds.
A high number in Task Manager does not mean your PC is short of memory, Microsoft's Windows chief said this week. Pavan Davuluri, who runs the Windows and devices business, argued that responsiveness is the measure that matters, not the percentage in use.
The reason is caching. Windows deliberately keeps recently used applications and data in free memory and releases it when something else needs the space, so that the system does not have to read the same data off the drive again. Memory that looks used is often memory working as intended.
Microsoft's analogy is a desk and a drawer. Papers on the desk are quick to reach; papers in the drawer take longer to fetch. Filling the desk is efficiency rather than a fault — which is why the useful question is whether the machine still feels responsive, not how much memory is left.
Independent testing supports the idea that usage scales with capacity. Windows Latest ran Windows 11 virtual machines with 4, 8 and 16 GB and found “in use” memory of roughly 2.4, 2.9 and 3.7 GB respectively: the more room there is, the more the system uses.
There is a point where it does become a problem. Microsoft's documentation describes the warning signs as available memory close to zero, committed memory approaching the sum of physical RAM and the page file, and compressed memory climbing steadily. At that stage, stutter and freezes are real.
The advice that follows is less convenient than the diagnosis: find the process that is actually eating memory — usually a browser or a web app — rather than running a “memory cleaner”, which empties the cache and forces Windows to read the same data back off the disk.
中文翻译（全文）
任务管理器里数字很高，并不意味着你的电脑内存不够——微软 Windows 业务负责人本周这样表示。掌管 Windows 与设备业务的帕万·达武卢里认为，真正该看的指标是响应速度，而不是内存占用的百分比。
原因是缓存。Windows 会主动把最近用过的应用和数据留在空闲内存里，等别的程序需要空间时再释放，这样系统就不必再从硬盘上把同样的数据读一遍。看起来「被占用」的内存，往往正是按设计在工作的内存。
微软的类比是一张办公桌和一个抽屉：放在桌上的资料取用快，收进抽屉里就要多花时间。把桌子填满属于效率，而不是故障——所以有意义的问题是机器是否依然流畅，而不是还剩多少内存。
独立测试支持「占用随容量增长」这个说法。Windows Latest 在 4GB、8GB 和 16GB 的 Windows 11 虚拟机上测试，发现「使用中」内存分别约为 2.4GB、2.9GB 和 3.7GB：空间越大，系统用得越多。
但确实存在出问题的临界点。微软的文档把预警信号描述为：可用内存接近零、已提交内存逼近物理内存与页面文件之和、压缩内存持续上升。到了那一步，卡顿和假死就是真的。
随之而来的建议没有诊断那么省事：找出真正吃内存的进程——通常是浏览器或网页应用——而不是去跑所谓的「内存清理」软件，它清空缓存后，反而会逼 Windows 把同样的数据再从硬盘读回来。
重点词汇
- cache /kæʃ/ n. — a store of data kept ready for quick reuse 缓存 Windows keeps data in a cache.
- responsive /rɪˈspɒnsɪv/ adj. — reacting quickly to input 响应迅速的 The real test is whether it stays responsive.
- committed memory /kəˈmɪtɪd ˈmeməri/ n. — memory the system has promised to programs, including space on disk 已提交内存 Committed memory approaching the limit is a warning sign.
- page file /peɪdʒ faɪl/ n. — disk space used as overflow when RAM is full 页面文件 Physical RAM plus the page file sets the ceiling.
- compress /kəmˈpres/ v. — to store data in less space 压缩 Memory compression rises under pressure.
- stutter /ˈstʌtə/ n. — a short interruption in smooth performance 卡顿 At that stage, stutter and freezes are real.
- release /rɪˈliːs/ v. — to free resources for other uses 释放 Windows releases the memory when needed.
- capacity /kəˈpæsəti/ n. — the total amount something can hold 容量 Usage scales with capacity.
- diagnosis /ˌdaɪəɡˈnəʊsɪs/ n. — the identification of what is wrong 诊断 The advice is less convenient than the diagnosis.
- analogy /əˈnælədʒi/ n. — a comparison used to explain something 类比 Microsoft's analogy is a desk and a drawer.
阅读测验
共 5 道题目
What is Microsoft's argument about memory use?
Why does Windows keep data in RAM?
In testing, systems with more RAM showed higher memory in use.
Which signs does Microsoft describe as a real problem? (Select all that apply)
Microsoft compares memory to a desk and the SSD to a _____.
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