uptime tracker

There are two sort fields, Update Time: UpTime Release time: Addtime When the article is published, it will have its release time, if the modified article will save a modified time.Take the data on the homepage and sort it according to the following rules:1, has the update time the article uses the uptime, only publishes the time the use Addtime, carries on the order to arrange //这样取出的数据是不合要求的select * from

MySQL database, performance monitoring bitsCN.com Show status;Flush status; View the current connection count show status like 'thread _ % ';Thread_cached: Number of cached threadsThread_running: number of activated threadsThread_connected: number of threads currently connectedThread_created: total number of created threads Thread cache hitsThread_connected = show global status like Thread_created;Connections = show global status like 'connections ';TCH = (1-(Threads_created/Connections) * 100 V

": "192.168.16.103" },{ "_ id": 2, "host ": "192.168.16.216"}]} on the 192.168.16.234 Server: (SUSE Linux Enterprise Server 11 (x86_64)> rs. isMaster () {"setName": "jieshi "," Ismaster ": true," secondary ": false," hosts ": [" 192.168.16.234 "," 192.168.16.216 "," 192.168.16.103 "]," OK ": 1}> rs. status () {"set": "jieshi", "date": "Fri Dec 10 2010 12:48:46 GMT + 0800 (CST)", "myState": 1, "members ": [{"_ id": 0, "name": "hapame-db: 27017", "health": 1, "state": 1, "self": true }, {"_ id": 1

, PendingIntent deliveryIntent ){SmsMessage. SubmitPdu pdu = SmsMessage. getSubmitPdu (ScAddr, destAddr, text, (deliveryIntent! = Null ));SendRawPdu (pdu. encodedScAddress, pdu. encodedMessage, sentIntent, deliveryIntent );}...... At this point, the word "sendText ()" is gone, and it is replaced by another method name: sendRawPdu (). Tracing this method can find that it is SMSDispatcher. is this class familiar with a java method? Yes. We have already dealt with it in Stage 4! Let's see what its

through codeplex to achieve the project management I understand. Project management principles My principle is:Minimize all stakeholder tasks and maximize project continuity.This is a game in itself. There is no silver bullet in the world, and it can only be balanced as much as possible. The stakeholder mentioned here includes developers, testers, Coordinator personnel and so on. Everyone contributes freely and there is no need to follow a perfect process, such as cmme to increase the worklo

BT client source code analysis: SummaryAuthor: Ma GeDate: 2004-6-24 Overview:Compared with the tracker server, the BT client is much more complicated. Bram Cohen spent a year full time to complete BT, I guess most of the time is spent on the implementation and debugging of the BT client.Because the BT Client involves a lot of code, I can no longer go into the details just like analyzing the tracker server.

The hansh value of BT seeds is calculated. Recently, I am suddenly interested in BT seeds (do not ask why) 1. BT seeds (concept) BT is a distributed file distribution protocol. Each file downloader continuously uploads downloaded data to other Downloaders while downloading. This ensures that the faster the download, the faster the upload, to implement notification download 2. How does BT download and upload files simultaneously? Starting from the file itself, the BT file contains two parts of

1. Required installation Package Libfastcommon-master.zipFastdfs_v5.05.tar.gzFastdfs-nginx-module_v1.16.tar.gzNginx-1.8.0.tar.gz 2. Install Libfastcommon Package The following dependencies need to be installed before the ① is installed Libfastcommon (the system does not need to be installed if it has one):Yum install-y gccYum Install-y gcc-c++ ② Decompression Libfastcommon-master.zipUnzip Libfastcommon-master.zip ③ compilationCD Libfastcommon-master./make.sh ④ Installation./make.sh install 3. In

Summary of some important MySQL performance indicator calculation and optimization methods, mysql performance indicator 1 QPS calculation (queries per second) For databases dominated by MyISAM Engines MySQL> show GLOBAL status like 'questions';+---------------+------------+| Variable_name | Value |+---------------+------------+| Questions | 2009191409 |+---------------+------------+1 row in set (0.00 sec)mysql> show global status like 'uptime';+--

: Indexmaker/etc/mrtg. cfg>/var/www/mrtg/index.html Access: Http: // localhost/mrtg/ 2. install CPU load monitoring [collection once every 5 minutes by default] Switch to Super User: Sudo-sH Install software: Apt-get install sysstat Create a CPU script: Mkdir/opt/mrtg Vim/opt/mrtg. cpu #! /Bin/bash Cpuusr = '/usr/bin/sar-u 1 3 | grep Average | awk {print $3 }' Cpusys = '/usr/bin/sar-u 1 3 | grep Average | awk {print $5 }' UPtime = '/usr/bin/

MySQL performance indicator calculation and Optimization1 QPS computing (queries per second) for databases dominated by the MyISAM Engine Mysql> show GLOBAL status like 'questions ';+ --------------- + ------------ +| Variable_name | Value |+ --------------- + ------------ +| Questions | 2009191409 |+ --------------- + ------------ +1 row in set (0.00 sec) Mysql> show global status like 'uptime ';+ --------------- + -------- +| Variable_name | Value |

How to view system boot time and run time under Linux1.uptime commandOutput: 16:11:40 up, 4:21, 2 users, load average:0.00, 0.01, 0.002. View the/proc/uptime file calculation system start timeCat/proc/uptimeOutput: 5113396.94 575949.85The first number is the system has been running for 5,113,396,.94 seconds, using the System tool date to calculate the system boot time Code: Select All

from our sight. This will be a huge revolution in the convergence of truth and virtual reality. However, the world we used to change in the past must be completely changed. Perhaps the world of AR still sounds like a picture in a movie, but if we trace its development history, the related research has actually started as early as the 1960 s. The earliest research scholar was Ivan Sutherland, who taught at Harvard University and the University of Utah. He and his students at the two universities

run mapreduce on both machines at the same time.First, check back here.String tracker = Conf. Get ("mapred. Job. Tracker", "local ");If ("local". Equals (tracker )){This. jobsubmitclient = new localjobrunner (CONF );} Else {This. jobsubmitclient = (jobsubmissionprotocol)Rpc. getproxy (jobsubmissionprotocol. Class,Jobtracker. getaddress (CONF), conf );}If the

can set the original JPEG image to copy at least three copies, but only 1or2 copies, if the data is lost, then the MogileFS Distributed file storage System can re-establish the lost copy number. In this way, mogilefs (do not raid) can save the disk, otherwise you will store the same copy multiple copies, completely unnecessary.4. "Much better than raid" – in the establishment of a non-storage area network RAID (Non-san RAID), the disk is redundant, but the host is not, and if your entire machin

background:We use fastdfsV3.02 on the original server, now to migrate to the new server, no related documents on the Internet, tossing for a long time, now the migration process is recorded as follows, so that other students to configure and migrateTracker Server: 192.168.1.246Storage server: 192.168.1.246Both tracker and storage are deployed on the same server when the traffic is not very largeFirst, configure the

Fastdfs is an open source, high performance Distributed File system, his main features include: file storage, synchronization and access, design based on high availability and load balancing,Fastdfs is ideal for file-based Web sites, sample sharing and video sharing sitesFastdfs has two roles: Tracking Service (tracker) and storage services (storage), service control, dispatch files are load balanced access, storage services include: file storage, fil