Ubuntu is slow in network speed, mainly to waste time on domain name resolution. We can use dnsmasq to solve this problem.
The details are as follows:
Install dnsmasq
Command: sudo apt-Get install dnsmasq
Edit the configuration file of dnsmasq
Command: sudo gedit/etc/dnsmasq. conf
Find the following item
# Resolv-file =
Replace with the following statement
Resolv-file =/etc/resolv. dnsmasq. conf
Make sure
The machine is a dual system, respectively Windows XP and CentOS-5.3, the problem is that in Windows network speed is very fast, and then switch to Linux network speed becomes snail crawling as slow, endure for some days. I tried to reinstall the NIC Driver in Linux. The effect is zero and the problem persists. The root cause of the problem is that DNS resolution
Use Hibernate and query. setfirstresult (fist), query. when setmaxresult () is paging, the speed of querying the previous pages is very fast (20 W records, within 1 second), but when you click "last page, the query speed is very slow (20 million records, more than 13 seconds ). Generally, the cause is full table scan, and the required records are at the end of th
Usually our website will load some JS code, statistics ah, Google ads Ah, Baidu Alliance Ah, Ali mother Advertising code Ah, a heap, finally make the page loading speed is very slow, very slow.Solution: Change the way a JS contains, so that the JavaScript loading speed doubled.To load the usual way:
The code is as follows
Copy Code
How to solve the Win7 system slow running speed
1, first open the "Run" dialog box, you can directly press the keyboard key combination (WIN+R) to open, enter the command "msconfig" into the System Configuration Utility interface.
2, in this interface, switch to the "Startup" tab, click the "Disable All" button. Of course, we can also check some items that must be started, depending on the act
1, in the lower left corner of the Win7 system desktop, click on the Taskbar "Start" menu, and then select the "Run" dialog box on the Start menu;
2, then in the WIN7 System Operation dialog box to enter the Msconfig command, open the System Configuration window;
3, on the Configuration window, select the "Boot" tab, and then enter the appropriate number in the timeout, then click OK and apply the button;
4, then in the Win7 System Configuration window, click on "Advanced
Fault phenomenon: An Internet café, the network card for the computer 10/100mbps Adaptive network card, switch for Full-duplex 10/100 Mbps switch. The network connection is normal, but when surfing the net, the network speed is slow and unstable quickly.
Fault analysis and elimination: According to the fault analysis, this fault may be a network cable problem, switch problems, or the problem of networking
Computer network failure is unavoidable. Network fault diagnosis is an important work of network management. Generally when the network occurs information is not available, can not browse the Web, and other connectivity failures, the phenomenon is relatively clear, easy to observe and locate the fault point, such a fault is not difficult to solve. But the most troubling thing is that the internet is a pass, but the network speed slows down.When faced
According to the latest research results, the global market is currently slow in the Development of Wimax technology-related products, and the overall technology market seems to be relatively deserted, it is also reported that leading manufacturers seem to have the desire to cut down this plan.
In particular, Ericsson may cut down the plan recently, which has a negative impact on the development of the WiMAX technology industry.
Ericsson said in the
Without a variety of extensions, the Firefox browser is difficult to achieve today's situation, but while adding powerful features, there are also a lot of extensions that directly slow down Firefox's running speed, some even make it completely unable to access the Internet.
If you think there may be extensions that have slowed down Firefox, you may as well look at the top 10 killers officially announced b
Slow parameterized query speed
This is the problem prototype:
--SQL1 declare @OrderDetailID nvarchar(50) set @OrderDetailID='R1502003963580C001' select * from BillDetail where OrderDetailID=@OrderDetailID --SQL2 select * from BillDetail where OrderDetailID='R1502003963580C001'
PS: In addition, when SqlParameter is used each time, if it is a character type, add size as much as possible, involving the exe
[email protected](Lmon)529.1 20140713 184151 1[email protected](Lmon)------------529.1 20140713 184218 2[email protected](Lmon)529.1 20140713 184332 1[email protected](Lmon)--dump SystemState is unable to analyze the data at that time--Analyze the AWR report. No latch problem found--The next time you encounter this problem is a timely operation--1 Login DatabaseSqlplus/nologConn/as SYSDBAOradebug SetmypidOradebug Dump SystemState 10Oradebug Tracefile_name--2 can run it again.1 Get Process IDPs-e
To be honest, the speed of recent access to Google is really not flattering, and the search result is waiting, and the click result is also waiting (the address first jumps to the official record and then jumps to the target address ). The Google official website also shows that its products are okay, so you can only think on FHQ in China. In many cases, because of slow access, you can only switch to Baidu.
After installing Ubuntu desktop on VirtualBox, we will first find that the Operation screen of the virtual machine cannot be filled with the entire display screen, here to VirtualBox install Ubuntu 14.04.2 as an example to explain how this problem solved:Click devices–> Insert Guest Additions CD image ... in the menu bar above VirtualBox, then follow the instructions to complete the installation steps and finally restart the virtual machine.After that, we'll also notice that the virtual machine
100% Imitation a station can do contact me memcache->remember error new station submitted Baidu SitemapC # project Start exception error do not know how to deal with TP inside the outside chain is what to do with the memory? Can you get rid of the model how to write SQL statement 50 The ValidateData in the model does not support multiple invocations?Last time asked not quite understand, this time, ask the big God detailed, urgent urgent!!! How to back up a database with mysqldump timing Thank yo
It turned out to be a problem with the Windows 7 built-in correction color (calibrate color) feature. Using this correction color feature will result in an ICC profile, which Windows 7 will use as the default display, and once the ICC profile is defined with a correction color, the speed of Windows Photo Viewer will become as slow as crawling, and the ICC profile will be restored as soon as it is deleted No
The Windows 8 system is more resource-saving than earlier Windows 7, Windows Vista systems, and even with the same hardware conditions, its speed and graphical display will be greatly improved, so we can try to troubleshoot the hardware problem by optimizing the startup entry, stopping the service, Upgrade drive to improve the slow running of the computer.
First of all, we can adjust the visual effect to t
These days a friend of the computer internet speed is very slow, look at the connection properties of the wireless network, found that the connection rate incredibly only 2Mbps, and sometimes only 1Mbps. The computers in the wireless LAN are in the same room, the previous connection rate is normal 11Mbps. This is a puzzle to my friend.
The specific solution is as follows:
Wireless network equipment can
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