mysqlslap输出信息中的若干问题_MySQL
bitsCN.com
mysqlslap输出信息中的若干问题
mysqlslap添加debug-info后，除了直接的测试结果外，还输出了测试环境的一些信息。
主要包括:
system time:在内核态下花费的时间
user time:在用户态花费的时间
max resident size:占用的最大物理内存(驻留内存)
Non-physical pagefaults:直接通过回收脏页来解决IO读写而产生的缺页中断的次数
involuntary context switch:线程因为时间片到了或更高优先级的线程抢占导致的切换的次数
voluntary context switch:线程主动让出处理器导致的切换的次数，很可能是等待IO
这些信息可以作为此次测试的有效性的一个判断依据。
这些信息的获取是通过一个系统调用getrusage来获取。
在mysqlslap的源码中有此体现。
具体可参考:
http://www.kernel.org/doc/man-pages/online/pages/man2/getrusage.2.html
bitsCN.com
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How to remove author and last modified information in Microsoft Word
Apr 15, 2023 am 11:43 AM
Microsoft Word documents contain some metadata when saved. These details are used for identification on the document, such as when it was created, who the author was, date modified, etc. It also has other information such as number of characters, number of words, number of paragraphs, and more. If you might want to remove the author or last modified information or any other information so that other people don't know the values, then there is a way. In this article, let’s see how to remove a document’s author and last modified information. Remove author and last modified information from Microsoft Word document Step 1 – Go to
How to share contact details with NameDrop: How-to guide for iOS 17
Sep 16, 2023 pm 06:09 PM
In iOS 17, there's a new AirDrop feature that lets you exchange contact information with someone by touching two iPhones. It's called NameDrop, and here's how it works. Instead of entering a new person's number to call or text them, NameDrop allows you to simply place your iPhone near their iPhone to exchange contact details so they have your number. Putting the two devices together will automatically pop up the contact sharing interface. Clicking on the pop-up will display a person's contact information and their contact poster (you can customize and edit your own photos, also a new feature of iOS17). This screen also includes the option to "Receive Only" or share your own contact information in response.
How to get the GPU in Windows 11 and check the graphics card details
Nov 07, 2023 am 11:21 AM
Using System Information Click Start and enter System Information. Just click on the program as shown in the image below. Here you can find most of the system information, and one thing you can find is graphics card information. In the System Information program, expand Components, and then click Show. Let the program gather all the necessary information and once it's ready, you can find the graphics card-specific name and other information on your system. Even if you have multiple graphics cards, you can find most content related to dedicated and integrated graphics cards connected to your computer from here. Using the Device Manager Windows 11 Just like most other versions of Windows, you can also find the graphics card on your computer from the Device Manager. Click Start and then
The single-view NeRF algorithm S^3-NeRF uses multi-illumination information to restore scene geometry and material information.
Apr 13, 2023 am 10:58 AM
Current image 3D reconstruction work usually uses a multi-view stereo reconstruction method (Multi-view Stereo) that captures the target scene from multiple viewpoints (multi-view) under constant natural lighting conditions. However, these methods usually assume Lambertian surfaces and have difficulty recovering high-frequency details. Another approach to scene reconstruction is to utilize images captured from a fixed viewpoint but with different point lights. Photometric Stereo methods, for example, take this setup and use its shading information to reconstruct the surface details of non-Lambertian objects. However, existing single-view methods usually use normal map or depth map to represent the visible
What's the reason for the delay in receiving messages on WeChat?
Sep 19, 2023 pm 03:02 PM
The reason for the delay in WeChat receiving information may be network problems, server load, version problems, device problems, message sending problems or other factors. Detailed introduction: 1. Network problems. The delay in receiving information on WeChat may be related to the network connection. If the network connection is unstable or the signal is weak, it may cause delays in information transmission. Please ensure that the mobile phone is connected to a stable network and the network signal strength is good. ; 2. Server load. When the WeChat server load is high, it may cause delays in information transmission, especially during busy periods or when a large number of users use WeChat at the same time, etc.
How NameDrop works on iPhone (and how to disable it)
Nov 30, 2023 am 11:53 AM
In iOS17, there is a new AirDrop feature that allows you to exchange contact information with someone by touching two iPhones at the same time. It's called NameDrop, and here's how it actually works. NameDrop eliminates the need to enter a new person's number to call or text them so they have your number, you can simply hold your iPhone close to their iPhone to exchange contact information. Putting the two devices together will automatically pop up the contact sharing interface. Clicking on the popup will display a person's contact information and their contact poster (a photo of your own that you can customize and edit, also new to iOS 17). This screen also includes "Receive Only" or share your own contact information in response
What is the unit for transmitting information in a computer network?
Dec 07, 2020 pm 05:26 PM
The transmission of information in computer networks is based on "words"; words are the basic unit of data transmission. Computer networks have two main functions: data communication and resource sharing, and the information transmitted in data communication is expressed in the form of binary data. Data communication is a communication method and communication service that uses data transmission technology to transfer data information between two terminals according to a certain communication protocol.
iOS 17 NameDrop: How to Easily Share Your Contact Information on iPhone
Jul 30, 2023 pm 05:18 PM
Apple has introduced a very fast (if not the fastest) way to share your contact information with another iPhone via NameDrop. Here's everything you need to know. What is NameDrop? iOS 17 introduces NameDrop, a revolutionary feature that leverages contact posters. These personalized cards can be created for yourself and other contacts and will appear whenever you make a call. With multiple customizable options such as photos, Memojis, monograms, and more, you can tailor your contact poster to match your personality using your preferred color scheme and fonts. NameDrop automatically shares your poster when your iPhone is in close proximity to other users, allowing both parties to effortlessly
