how to lower latency wow

One > Modify handle numberUlimit–a1 "Modify the file: /etc/security/limits.conf - Span style= "color: #000000; font-size:14px;" > current session run Span style= "font-family:arial, ' Sans-serif '; color: #000000; font-size:14px;" >ulimit-a command cannot be displayed) 1. * Soft Nofile 32768 #limit the maximum number of file handles for a single process (System alert when this limit is reached)2. * Hard Nofile 65536 #limit the maximum number of file handles for a single process

Today, record the problems you encountered before: Project deployment in window login can be completed quickly, after deployment to Linux, the first logon process becomes very slow.By looking at the system log, the discovery time is mainly consumed in the creation session, and is located to the SecureRandom initialization problem, continue to view, found that the session ID is created as a UUID, here, the person familiar with Linux will understand the problem.Java's UUID relies on the Securerand

-webkit-transition-moz-transition-o-transition transition CSS Property The property being transformed (for example, color). Duration The duration of the transformation, usually measured in seconds (e.g.,. 25s). Timing function Allows you to control how long the duration is calculated. Instead of using a simple linear calculation, you can either accelerate (fade) or decelerate (fades), or even specify a beat or count (for example, linear). More on this later in the article. Delay How long

percent, length Z-index positive integer Zoom Digital Transform Timing and latency With transformations, you can change the rate of the transformation, slow at the beginning and then accelerate at the end, and vice versa, or anything between. CSS transforms have 5 timed keywords and also allow you to define your own timing curves. Cubic-bezier (x1, y1, x2, y2) X and Y values are between 0 and 1 to define the shape of the Bezier curve for the tim

This article introduces a simple network program roundtrip, which is used to measure the network latency between two machines, that is, "roundtrip time/round trip Time/rtt". This article mainly examines the tcp_nodelay of the fixed-length TCP message and the function of the packet. The code for this article is shown in http://code.google.com/p/muduo/source/browse/trunk/examples/roundtrip/roundtrip.cc The method of measuring RTT is simple: Host A se

Latency2. MasterLoad3. SlaveLoadIt is common practice to use more than oneslaveto share the read request, and then from theseslaveTo take a dedicated server, only as a backup, without any other operations, can be relatively maximum to achieve'Real Time''s requirements.In addition, we introduce2a parameter that can reduce the delay–slave-net-timeout=secondsparameter meaning: whenslaveread from the primary databaseLoghow long to wait to reestablish the connection and get the data after the data f

Facebook recently unveiled Apollo, a Paxos-like NoSQL database on Facebook. Built on the Apache Thrift 2 RPC framework, Apollo was developed as a tiered storage system, and all data was partitioned into Shard, very similar to the regional servers in HBase. Its greatest benefit is low-latency online storage, especially in flash and memory.Unlike storage for documents and key values, Apollo is a modified data structure that allows you to store maps, que

#repdelay. sh#!/bin/sh#[emailprotected] #查看复制延迟具体多少event #set mysql evnmysql_user_master=root mysql_pass_ master= ' password ' mysql_host_master=192.168.2.188mysql_user_slave=root mysql_pass_slave= ' password ' MYSQL_HOST_ Slave=192.168.2.14tmpfile_01= "tmp01. ' Date +%y%m%d%h%m%s '. txt" tmpfile_02= "tmp02. ' Date +%y%m%d%h%m%s '. txt ' mysql-h$ {mysql_host_master}-u${mysql_user_master}-p${mysql_pass_master}-e "SHOW BINARY LOGS;" >${tmpfile_01}mysql-h${ Mysql_host_slave}-u${mysql_user_slave}-p$

mysqlbingSqlbinlog--no-defaults--start-datetime= ' 2017-11-17 07:50:00 '--stop-datetime= ' 2017-11-17 08:20:00 '--base64-output =DECODE-ROWS-VV binlogname > Result.txt2 Using the Awk tool to perform additions and deletions during this periodawk '/###/{if ($0~/update| Insert| delete/) count[$2 "" $NF]++}end{for (i in count) print I, "\ T", count[i]} ' file name | column-t | Sort-k3nStatistical Library + table additions and deletions to check the number of changes and to sort3 According to the re

) printf "$boldyellow";; Blue) printf "$blue" ;; Boldblue) printf "$boldblue";; Magenta) printf "$magenta";; Boldmagenta) printf "$boldmagenta";; Cyan) printf "$cyan";; Boldcyan) printf "$boldcyan";; White) printf "$white";; Boldwhite) printf "$boldwhite";; Esac printf "%s\n" "$message" tput sgr0# tput sgr0 Restore default printf "$black" Return}cechon () # color-echo.# parameter 1 $ = Messag e# Parameter 2 $ = color{local default_msg= "No message passed." # doesn ' t really need to be a local v

MySQL master-slave replication is an important part of the MySQL high-availability architecture. It can be used to achieve load balancing, high availability and failover, and provide backup. For master-slave replication monitoring, it is not reliable to rely solely on the showslavestatus provided by MySQL itself. Pt-heartbeat is a good choice for master-slave replication latency monitoring. This article describes MySQL master-slave replication is an i

In Android, latency functions are divided into user space and kernel space: Kernel space # Include Udelay (int n ); Mdelay (INT n )); Ndelay (INT n )); These functions will lead to an endless cycle of CPU and lead to a busy wait of CPU. Usleep (int n ); Msleep (INT n )); Nsleep (INT n )); The difference between the first group and the second group of latency functions is that the first group of