uptime measurement

Android on the common measurement unit [xdpi, hdpi, mdpi, ldpi] interpretation from: http://www.cnblogs.com/cmduan/archive/2012/03/09/2388345.html Explanation of common measurement units (xdpi, hdpi, mdpi, and ldpi) on Android Terms and conceptsScreen SizeThe physical size of the screen, based on the diagonal length of the screen (such as 2.8, 3.5 ).In short, Android simplifies all screen sizes into three

Android custom controls Series 8: onMeasure () (2) -- use onMeasure measurement to achieve image stretching without deformation and solve the screen adaptation problem, The previous article details the principles and functions of the onMeasure/measure method in Android custom controls. For more information, see blog: Android custom controls Series 7: onMeasure () how to measure the size of a widget in the method (1). Let's take a real look at these tw

Similarity measurement or distance functions are very important for algorithms such as clustering and nearby search. As mentioned above, page deduplication is also an example of similarity applications. However, how to define a proper similarity or distance function depends entirely on the task at hand. Generally, defining a distance function d (x, y) must meet the following criteria: 1. d (x, x) = 0; // The distance to oneself is 0.2. d (x, y)> = 0 /

/jmeter(3) Run JMeter, need your remote tool support open graphical interface, I use Xmanager here/usr/local/jmeter/bin/jmeterJMeter opens after the page looks like this:Add: If the Windows platform is running JMeter, it is also necessary to configure the Java environment, then download JMeter, unzip, run the JMeter installation directory under bin/ Jmeter.bat can, usually also a large part of the people in Windows configuration JMeter do the controller, Linux to do the press.4.jmeter Pressure

How to automatically add units of measurement when Excel enters data When we do data entry in a cell, we often need to add some units. For example, amount per unit yuan, fractional unit element. If the frequent repetition of these units significantly more trouble, in fact, we can use the custom format to implement automatic add units of measurement. Select the cells that you want to automatically add unit

///General, view measurement methods:@Override public void OnCreate (Bundle savedinstancestate) { Super.oncreate (savedinstancestate); Setcontentview (R.layout.main); final ImageView ImageView = (ImageView) Findviewbyid (R.id.imageview); int w = View.MeasureSpec.makeMeasureSpec (0,view.measurespec.unspecified); int h = View.MeasureSpec.makeMeasureSpec (0,view.measurespec.unspecified); Imageview.measure (W, h); int height =imagev

Winkarst.v12.2.winall (software for cave research and surveying and mapping. It has three-dimensional display of measurement data function)geocentrix.reward.professional.v2.5.22 1CD (the most powerful and user-friendly protective wall design designed for engineers with a complete set of toolsSoftware　|||||||||||||||||||||||||||||||||||||||||||||||||||||||||Phone (tel): 18980583118 Q q:993670398Customer Service Email: [Email protected] (letter must ret

Serialization | Iot framework ServerSuperIO tutorial-17. Supports real-time databases and high-concurrency storage of measurement point data. Appendix: Release and version update instructions ., Serversuperio 1. C # Introduction to cross-platform Iot communication framework ServerSuperIO (SSIO) Serialization | Iot framework ServerSuperIO tutorial 1.4 communication modes and mechanisms. Serialization | Iot framework ServerSuperIO tutorial 2. service in

1. First, we need to determine the basic environment of the pressure measurement, mainly server, network, disk.Server CPU frequency and cache size has a large impact on the speed of program execution, in general, the impact of IO-intensive operations cache more, CPU-intensive operation of the main frequency impact more; Server CPU cores have a large impact on multithreaded programs, and for high-level languages, due to the number of CPU cores that can

Measurement of rapid development platform, the construction of the business system, in the hands of customers to use, it is generally necessary to create customer use help documents. Because the measurement rapid development platform is an integrated platform integrating C/S,B/S, it is easy to make use of HTML documents to create business system help documents.Example:---------------------------------------

Previously, the use of swingbench for the performance stress test of Oracle RAC DB was used in the most basic and intuitive graphical mode to meet most requirements.However, in some scenarios, the graphics mode may itself consume too much resources, especially when generating a large amount of test data, it is likely due to the instability of the graphics itself caused by the death of the card or even direct exit, seriously affecting the efficiency and testing experience.In the case of silent mo

maximum iops of the disk can be calculated, that isIops = 1000 MS/(tseek + troatation ),Ignore the data transmission time. Assuming that the average physical tracing time of a disk is 3 ms, and the disk speed is, 10 K, and 15 K rpm, the theoretical maximum iops of the disk is,Iops = 1000/(3 + 60000/7200/2) = 140Iops = 1000/(3 + 60000/10000/2) = 167Iops = 1000/(3 + 60000/15000/2) = 200SSD is an electronic device that avoids the time spent on track finding and rotating traditional disks and great

Android custom control series tutorial-view measurement and LayoutAs mentioned above, when a view interface is drawn on an android screen, it must go through the following phases: measure, layout, and draw, we can see these functions in the view class, and there are several functions in it: onmeasure, onlayout, ondraw. These functions are the ones we need to pay attention to when rewriting the control, let's talk about the functions and functions of t

In a cc2640r2f project over the past few days, production tests require measurement of emission current, reception current, and sleep current. It is best to measure the current according to the method, so that the module is in a specific State (launch, receive, sleep), read the current table data, this measurement method is called solution 1.However, in actual production, we hope to control the module to di

Source: http://www.51testing.com/cgi-bin/viewthread.php? Tid = 5888 fpage = 1 Highlight = % C8 % B1 % CF % DD % B7 % D6 % Ce % F6 Quantitative management is a development trend of project management. For testing, it is very helpful to manage and improve the measurement of testing costs, results and benefits. You cannot manage what you cannot see and understand, and for understanding testing, you must collect and track test process and test validity

LoadRunner interface voltage measurement, request message is in JSON formatFocus on the parameterization of request messages:The request method is as follows:"Follow 1" "EncType=application/json", 　　　//指定响应头的Content-Type，这里是JSON "RecContentType=application/json", 　　//指定请求头的Content-Type，这里是JSON"Attention 2" "Be aware of the parameterization processThe original text of each parameter in the middle of the comma, before and after increasi

Tags: postgrep sql geometry measurement function1. Measuring area st_area (geometry)2, according to the latitude and longitude points to calculate the distance on the earth surface, unit meters, the earth radius value of 6370986 meters st_distance_sphere (point, point)Similarly, using the specified earth ellipsoid parameter st_distance_spheroid (point, Point, spheroid)3. Measuring 2D object length st_length2d (geometry)4. Measuring 3D object length st

The scope discussed in this paper does not include geometry reconstruction, texture reconstruction, but only three-dimensional measurement algorithm based on the existing three-dimensional triangular mesh model (the human triangular grid). In fact, the circumference measurement is a three-dimensional model with a specific plane intersection, and the intersection further analysis of the intersection of the s

(). density; return (int) (Pxvalue/scale+0.5f); } /span> vga:640*480qvga:320*240hvga:320*480wvga:800*480wqvga:480x272 or 400x240Resolution (number of levels x vertical number) type ratio 88x72 qqcif 11:9 128x96 sub-qcif 4:3 128x128 know to complement 1:1 160x120 QQVGA 4:3 176x144 QCIF 11:9 208x176 sub- Qvga-13:11 220x176 SUB-QVGA 5:4 240x176 sub-qvga+ 15:11 320x200 CGA 16:10QVGA 4:3 352x288 CIF 11:9 640x360 nHD 4:3 400x240 WQVGA 5:3 400x320 WQVGA 5:4 480x240 WQVGA 2:1 480x272 WQVGA