how to lower latency wow

How can I determine the Master/Slave latency of a MySQL database? In this paper, we introduce two judgment methods: 1. Seconds_Behind_Mastervs2.mk-heartbeat, then we will introduce these content respectively. In daily work, for MySQL master-slave replication check, on the one hand, we need to ensure that the overall structure of replication is normal, on the other hand, we need to check master-slave data How can I determine the Master/Slave

This time, we will separately investigate the time of Master/Slave latency. The master-slave latency mentioned here is not ldquo; slave database update performance cannot keep up with the master database rdquo; it is ldquo; a command slave This time, we will separately investigate the time of Master/Slave latency. The master-slave

Latency of next-generation SSD controller based on low-density Inspection Author: Stephen BatesLatency Variability In the previous blog, I talked about how the Error Correction Code (ECCS) in the enterprise-level SSD controller is being converted to Low-Density Parity Check (Low-Density Parity Check. This article also implies that this conversion will have a profound impact on the latency in the next-genera

MySQLDatabaseMaster/Slave latencyHow to judge? This article introduces two methods for judging: 1. Seconds_Behind_Master vs 2. mk-heartbeat. Next we will introduce these methods separately. In daily work, for MySQL master-slave replication check, on the one hand, we need to ensure that the overall structure of the replication is normal, on the other hand, we need to check whether the master-slave data is consistent. For the former, we can monitor whether the replication thread is working normall

Reprinted from: Http://www.jianshu.com/p/6e2b68a93c88 One, mobile 300ms click DelayIn general, if the mobile browser is distributing the Click event without special processing, there will usually be a delay of around 300ms. That is, when we click on the page, the mobile browser does not respond immediately, but will wait for a few moments before the effect of clicking. In the early days of the mobile web, users ' sense of 300ms latency was not obvious

the difference between Master_log_pos and Read_master_log_pos . For example:The result of executing SHOW BINARY LOGS on Master is: +------------------+--------------+ | Log_name | file_size | +------------------+--------------+ | mysql-bin.000009 | 1073742063 | | mysql-bin.000010 | 107374193 | +------------------+--------------+ The result of performing SHOW SLAVE status\g on SLAVE is: At this time, the actual delay of slave should be:mysql-bin.000009 The difference delay between 1073742063 s

HTTP transaction latency-TCP impact Recently, I have read the HTTP authoritative guide, a big part of which often reminds us of boring usage and technical indicator explanations ...... make people big. However, this book makes me feel "fresh". On the one hand, the author uses easy-to-understand languages and a large number of icons, which makes us easy to understand, on the other hand, I have always been interested in network programming and have a g

"I chose to use animations instead of transitions when doing some of the effects on the mobile side today, and this 300ms click Delay is one of the main reasons why I use animations instead of using transitions"Animations and TransitionsCommon denominator: All CSS controls dom motion,Different points:1, Transition: Only two keyframes, start and end;2. Animation can set multiple keyframes3. Transitions must be triggered by events4, the animation does not need to open can move"CSS execution faster

Processing of network latency in online shooting games (Jinqing's column) Network latency in online games is unavoidable.For example, if a mobile client sends a command to receive confirmation from the server, there will be a latency of Ms,If the client is moved after ms, the operability will be very poor.Generally, it does not wait for the server to confirm. M

Tags: H.264 thread buffer parallel The latency of x264 encoding is studied. The method is to add log in x264.c Static int encode (x264_param_t * Param, cli_opt_t * OPT) { ... I _frame_size = encode_frame (H, opt-> Hout, pic, last_dts ); If (I _frame_size = 0) // delay Frames Fprintf (stderr, "output zero % d \ n", I _frame ); ... } After statistics, we found that the number of x264 encoded delayed frames conforms to the following formula. H-> frame

This is a BDP test in rhca, which is also a very common simulation of latency and packet loss. I will share it with you now. We also use the application software to test TCP/UDP comparison. When we test the impact of BDP on TCP/IP, we all need some network latency and packet loss simulation, many commercial software can do this. In fact, the perfect Linux itself can use TC to implement this function. the ne

fixed sampling because mouse input is continuous data. If a message is used, moving the mouse once may produce many sampling requests. In addition, hybrid sampling can be combined for 1, 2, and fixed sampling for the mouse, while message sampling can be used for other keys. To reduce latency, the client can immediately simulate the calculation result after sending out the sample, and then start to make predictions. After the server receives the samp

Basic tutorial on solving the Slave latency problem in MySQL, mysqlslave I. Cause AnalysisGenerally, slave has a large latency compared to the master. The root cause is that the replication thread on the slave cannot truly achieve concurrency. Simply put, on the master node, the transaction is committed in the concurrency mode (mainly based on the InnoDB engine), while on the slave, the replication thread

Tags: Unreal Engine character Taking the official Third Person template as an example, the uspringarmcomponent in the character blueprint implements most of the functions such as camera and scene collision and interaction. To implement camera latency, you only need to modify the attributes in the lag column. The first one controls the latency when the camera moves, the second is the

CPU speed (MHz) and high precision latency (microsecond) (Browsing 20979 times) Victor Chen, (C ++ fans) I. High-Precision latency is the basis of CPU speed measurementWindows has a very high-precision timer in microseconds, but different systems have different timer frequencies, which may be related to hardware and operating systems. You can use the API function queryperformancefrequency to obtain the ti

Resisting network interference is a major problem that needs to be solved in our network. Here we will explain how to solve the latency problem in detail. The latency of all 802.11 Wireless Networks in the city is complex. The city's security department plans to convert thousands of repeated passwords into more powerful, two-factor authentication methods. Why? The city's security architects said they had cr

1. Now, the business logic is to update a piece of data to 2, and then count the data with the status of 2. Due to the master-slave latency of MySQL, data is sometimes accurate and sometimes inaccurate. 2. Data Update and statistical data are logically the same and cannot be separated. For example, if I just saved the money and changed the status of the data table field to 2... 1. Now the business logic is to update a piece of data to 2 and then count

Application of C + + in low-latency trading systemIn the financial derivatives markets, market makers shoulder the obligation to quote for options Futures products (quoting)."Low latency" is crucial for such companies, and if you are faster than others, the same offer can be prioritized, the wrong offer can be withdrawn quickly, and the wrong pricing on the market can be arbitrage. Obviously, manual order i

When a sync-mode Ajax load results in a DOM operation being suspended, the browser with this problem has chrome,ie8,9, etc. (Unknown test), Example: The code is as follows Copy Code Dialog = New dialog ({}). open ();Sync mode of Ajax$.ajax ({URL: "Some/url",Async:false,//Load data with Sync callOther params}); In the above code, dialog is a dialog object, normally it should be a pop-up dialog, and then execute Ajax, but this place Ajax uses the Sync method

We can use percona's powerful weapon pt-heartbeat to monitor the master-slave replication latency of MySQL databases. Pt-heartbeat updates a specific table on the master database using timestamps, then, read the updated timestamp from the database and compare it with the local system time to monitor the # code/5799.html "target =" _ blank "> master/slave replication latency of the MySQL database, we can use