eyesight measurement

the following parametersOpcache.enable=1Opcache.enable_cli=1opcache.memory_consumption=256Opcache.interned_strings_buffer=16opcache.max_accelerated_files=5000Opcache.revalidate_freq=60Opcache.load_comments=1The above parameters can be modified according to the actual needs in the production environment.Restart the PHP-FPM and test again.Ab-n 1000-c Http://10.204.80.75/ecshop/index.phpThis is apachebench, Version 2.3 As you can see, the effect of enabling the Opcache cache is less than 70% of th

Label:BULK INSERT http://blog.csdn.net/xiaoxian8023/article/details/20155429 Mysql JDBC Batch data, need to add rewritebatchedstatements=true to JDBC connection. The default JDBC is not to turn on batch processing. Example: Jdbc:mysql://10.250.4.98:3306/dbname rewritebatchedstatements=true Java Updatebatchsample: Official Website Forums 39,260053,263456#msg-263456 MySQL itself have no real "batch" API for prepared statements.If You add the configuration property "Rewritebatchedstatements=true"

Csw_countdelete idle_count}probe timer.s ($1) {print_cswtop () printf ("--------------------------------------------------------------\ n")}After saving to CS.STP, execute with STAP CSWMON.STP 5 command.8, the discovery is the discover process in the repeated and the system process to switch. This consumes a lot of resources.9, from the online search for some of the ways to reduce the switching process:The development was then changed: the number of threads was doubled and controlled in a proce

hidden by default, in simple terms, the image-stabilization filter takes a small sample of each photograph (it's not stupid enough to test a 30 million-pixel blockbuster, which takes too much time), and this range is generally considered a generalization of the entire picture because of the camera jitter principle. But if you think your photos are special, or if you have any special attention, you can use this feature to manually specify the scope of the sample. By default, the new sampling ran

A WEBBEBCH IntroductionWebbench is a well-known website stress testing tool, developed by Lionbrdge company, capable of testing the performance of different services on the same hardware, and the health of the same service on different hardware.Two Deployment Installation1. Download the WEBBEBCH Packagewget http://home.tiscali.cz/cz210552/distfiles/webbench-1.5.tar.gz2. Unzip the installation packageTAR-XF webbench-1.5.tar.gz3. CompilingMake (To use root account, otherwise it will show ' Permiss

Earlier this month, AMD released the desktop seventh generation Apu, code-named Bristol Ridge, the first to bring AM4 new interface, support DDR44 memory, USB 3.1, and finally can be with the Intel six-generation processor a higher. AMD Seven generation a12-9800 APU processor One of the first high-end APU models is a12-9800, Quad core 3.8-4.2ghz,radeon R7 GPU 512 stream processors, thermal design power dissipation 65W. AMD says it can contend with Intel Core i5-6500.

will not be the database user permissions are not enough. Then asked the next customer, said the SQL2000 database administrator to the user. While I was testing the SA user, I further identified the issue of permissions. Then to the customer suggested a high point of access to users, but also immediately by the idea of the actual test, found that really is the issue of permissions. When there is not enough permissions, the program crashes. Just when I confirmed that this was the reason, the cus

frames was obtained in Paradise 4.0. Both of the test results under extreme conditions show gtx880m high-end performance, but compared to gtx780m does not increase significantly, only because the GPU core frequency increased, and support boost to pull out some performance gaps. Hot Game Measurement In the hot game of the actual link, we have selected the "Need for Speed 18" "Call of Duty 9" "Tomb Raider 9" and "Island Crisis 3", including 4 mainstr

Remove the length of the head and trailing space measurement string*obj parameter: Object with String * Return value: The object after the space is removed * *function Trimspace (obj){String.prototype.Trim = function (){Return This.replace (/(^s*) | ( s*$)/g, "");}Obj.value = Obj.value.Trim ();}/**************************** the length of the string measured *********************************//*** Remove head and trailing spaces *obj parameters: strvalu

Ah, the previous "experience measurement" divergent thinking notes out of the sun, is a backup, hoping to stir up a little ripple .... Metric Dimensions:Reliable, unique, easy to understand, trustworthy and satisfying User ExperienceMore than usability, detail emotional feedback (visual + operation)Usability is not necessarily the biggest problem if the user's motivation is strong – The function is above the form; How to do it?Unique Features – sma

to have no choice but to click on ads to leave the site. If the site is based on CPM, that is to say, pay-per-view advertising, the strategy is just the opposite. You need to allow visitors to stay on the site as long as possible, the more open pages the better, it is best not to leave the site. When we talk about the development of Web site objectives, we must also have a corresponding principle: 1. Reality, that is to say, the user completes as much as possible; 2. Measurable, network marke

Introduction Observation Error the research object of surveying adjustment subject A brief history and development of measurement adjustment tasks and content of this course error distribution and accuracy index Normal Distribution One-dimensional normal distribution The probability density of a one-dimensional random variable X that obeys a normal distribution is F (x) =12π−−√σ∗e− (x−μ) 22σ2 f (x) =\frac{1}{\sqrt{2π}\sigma}*e^{\frac{-(x-μ) ^

the data.The run phase is the SQL that runs the stress test.Cleanup phase This phase is to clear the data, that is, the prepare phase of the initialization of the table to drop offtest for MySQL transactional OLTP (test read-write)Sysbench--test=/usr/local/sysbench-0.5/sysbench/tests/db/oltp.lua \--mysql-host=18.50.129.66 \--mysql-port=3306 \--mysql-user=root \--mysql-password=123456 \--mysql-db=test \ test used target database, this library name to be created in advance--oltp-tables-count=10 \

Performance_schema.events_statements_history_long limit 10\gFour The problems encountered1. Production environment when grasping the package, for short connection, can catch MySQL login information, can play normal playback, for the long connection, because the lack of the first authentication login check information, can not play back, you may wait with the establishment of new connections, complete session more and more, traffic will gradually increase.2. It is generally not recommended to re

requirements, writing test cases also requires following the rules of the tool set , you must reference the Beetle.dtcore project when writing the test case, and then inherit the TestCase rewrite OnExecute write the code that needs to be tested, and if the test code is asynchronous, you need to rewrite the main method of execute, call the completed method manually to tell the tool what the test case Time to complete. Here are the implementation codes for several basic test cases HTTP

There are many times in the computer field. The first is called CPU time or execution time, which is used to measure the amount of time the CPU spends executing a program. The second is called the Wall clock time, which measures the total time when a program is executed. The wall clock time is also known as elapsed time or elapsed time. The wall clock time is usually longer than the CPU time, because the program that the CPU performs the measurement m

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 units of measurement to, and then open the Cells command under the Format

Tag: The extraction algorithm specifies that the relational computes the HTML member model FFFFFFThe 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

been welded in advance, no external connection required). The buzzer picks up the P2.1. 3. Algorithm part By detecting whether the key is pressed or pressed, start detection and then detect if the key is released. At the same time buzzer sound prompts to start detection, to trig feet at least 10us high level signal, the module automatically send 8 40khz square wave, automatic detection of whether there is a signal return, there is a signal return, through the echo foot output a high level, high

http://www.ibm.com/developerworks/cn/linux/l-netperf/ When building or managing a network system, we are more concerned about the availability of the network, that is, whether the network connectivity, but for its overall performance is often not considered, or even consider the problem of performance, but found no appropriate means to test the performance of the network. When we develop a network application, we will find that in the actual use of the network environment, the use of network ap