Linux开销的相关内容

文章 2024-03-19 来自：开发者社区

C/C++ 函数调用以及Linux中系统调用开销介绍：介绍C/C函数调用以及Linux中系统调用的开销情况

函数调用开销的原因 1.参数入栈，将函数参数入栈，这是现在函数调用的标准方式。所以参数越多，开销越大 2.将控制权转移至函数中. 3.建立新的栈帧，也就是当前函数使用的“一片”栈空间，使用ebp的值来标识新的栈帧，因此要将原栈帧首地址保存下来，方便回到原来的即调用者的栈帧。 4.恢复原栈帧，然后将控制权转移至调用者. ...

文章 2023-12-07 来自：开发者社区

深入理解Linux网络——TCP连接的开销

在应用程序里，我们使用多少内存都是自己能掌握和控制的，但是纵观Linux整台服务器，除了应用程序以外，内核也会申请和管理大量的内存。一、相关实际问题内核是如何管理内存的如何查看内核使用的内存信息服务器上一条ESTABLISH状态的空连接需要消耗多少内存机器上出现了3万多个TIME_WAIT，内存开销会不会很大二、Linux内核如何管理内存内核针对自己的应用场景，使用了一种叫做SLAB/SLUB的....

文章 2016-12-30 来自：开发者社区

Linux 时钟精度与 PostgreSQL auto_explain (explain timing 时钟开销估算)

标签 PostgreSQL , auto_explain , pg_test_timing , 时钟 , tsc , hpet , acpi , acpi_pm , Linux 背景我们在诊断SQL的执行计划时，通常会用explain analyze，analyze有几个开关，其中一个是timing，它会帮你记录下SQL每个NODE的执行时间。但是这部分是有一定的性能开销的，而且这个开销...

共有3条

< 1 >

跳转至： GO

更新时间 2024-03-20 16:42:09

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

Linux您可能感兴趣

产品推荐

{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB1zI1mn8FR4u4jSZFPXXanzFXa-232-232.png","contentLink":"https://www.aliyun.com/product/alinux","title":"Alibaba Cloud Linux ","des":"Alibaba Cloud Linux (原Aliyun Linux) 是阿里云推出的下一代 Linux 发行版，它为云上应用程序环境提供 Linux 社区的最新增强功能，在提供云上最佳用户体验的同时，也针对阿里云基础设施做了深度的优化。","link1":"https://alinux.console.aliyun.com/","btn1":"产品控制台","link2":"https://ecs-buy.aliyun.com/buyRedirect?spm=5176.cnalinux.0.0.549a6fc5YgcSNe&regionId=cn-beijing&imageId=aliyun-2.1903-x64-20G-alibase-20190327.vhd","btn2":"立即使用","btn3":"产品文档","link3":"https://help.aliyun.com/document_detail/111881.html?spm=5176.cnalinux.0.0.549a6fc5YgcSNe","infoGroup":[{"infoName":"产品入门","infoContent":{"firstContentName":"用户指导","firstContentLink":"https://help.aliyun.com/document_detail/111881.html","lastContentLink":"https://help.aliyun.com/document_detail/156214.html","lastContentName":"常见问题"}},{"infoName":"最新动态","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/154951.html","firstContentName":"产品动态","lastContentLink":"","lastContentName":""}},{"infoName":"相关产品","infoContent":{"firstContentLink":"https://www.aliyun.com/product/ecs","firstContentName":"云服务器 ECS","lastContentName":"","lastContentLink":""}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"mPaaS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB1zI1mn8FR4u4jSZFPXXanzFXa-232-232.png","contentLink":"https://www.aliyun.com/product/alinux","title":"Alibaba Cloud Linux ","des":"Alibaba Cloud Linux (原Aliyun Linux) 是阿里云推出的下一代 Linux 发行版，它为云上应用程序环境提供 Linux 社区的最新增强功能，在提供云上最佳用户体验的同时，也针对阿里云基础设施做了深度的优化。","link1":"https://alinux.console.aliyun.com/","btn1":"产品控制台","link2":"https://ecs-buy.aliyun.com/buyRedirect?spm=5176.cnalinux.0.0.549a6fc5YgcSNe&regionId=cn-beijing&imageId=aliyun-2.1903-x64-20G-alibase-20190327.vhd","btn2":"立即使用","btn3":"产品文档","link3":"https://help.aliyun.com/document_detail/111881.html?spm=5176.cnalinux.0.0.549a6fc5YgcSNe","infoGroup":[{"infoName":"产品入门","infoContent":{"firstContentName":"用户指导","firstContentLink":"https://help.aliyun.com/document_detail/111881.html","lastContentLink":"https://help.aliyun.com/document_detail/156214.html","lastContentName":"常见问题"}},{"infoName":"最新动态","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/154951.html","firstContentName":"产品动态","lastContentLink":"","lastContentName":""}},{"infoName":"相关产品","infoContent":{"firstContentLink":"https://www.aliyun.com/product/ecs","firstContentName":"云服务器 ECS","lastContentName":"","lastContentLink":""}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"mPaaS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}}