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Linux uses FIO to test disk IOPS

Linux uses FIO to test the IOPS of the disk 2013-09-23 10:59:21Category: LINUXFio is a great tool for testing IOPS, which is used for stress testing and validation of hardware, supporting 13 different I/O engines, including: Sync,mmap, Libaio, Posixaio, SG v3, splice, NULL, network, Syslet, Guasi, Solarisaio and so on.FIO website Address: http://freshmeat.net/projects/fio/One, FIO installationwget http://brick.kernel.dk/snaps/fio-2.0.7.tar.gzYum Install Libaio-develTAR-ZXVF fio-2.0.7.tar.gzCD fi

How do I pick a wireless router?

intelligent routing, the survey shows that most consumers show a certain perception of intelligent routing, and that the wireless performance of a router is more important than the one that can choose intelligent route in a certain range of price. The visible router market pain point is still focused on the poor quality of the wireless signal.   Gigabit Dual-frequency routing as a future trend 802.11AC dual-Frequency router is a newly born new wireless standard product, its birth in order to

View limitations on modifying oracle10g archive log space

In oracle10g, the default archive path is $oracle_base/flash_recovery_area. For this path, Oracle has a qualification that only 2G of space is available to the archive log by default, and you can use the following two SQL statements to view its qualification: 1. Select * from V$recovery_file_dest; 2. Show parameter db_recovery_file_dest (this friendlier and more intuitive) When the number of archived logs is greater than 2G, it is incorrect to report that there is no more room to accommodate

Free foreign space-free foreign php+mysql data space

FreeHost10 5G free PHP space to support FTP The free php space size is: 5GB; Monthly flow limit of: 50GB; Support Ftp/web way to upload and manage documents; Support PHP5, provide 5 MySQL database, and can manage database through phpMyAdmin; Website address: http://www.freehost10.com K2free Support FTP foreign 5G free PHP space The free php space size is: 5G

Tl-h69r/tl-h69es Mobile Set Router broadband dial-up Internet access

the correct password entered the account, click Next . The following figure: If the router detects dynamic IP or fixed-IP internet access, set it up according to the page tip. Note : 76% users because of the broadband account password error caused no access to the Internet, please carefully check the broadband account password is correct, pay attention to Chinese and English input, letter case, suffix, etc. whether the input integrity. 5 , set Wireless p

Newifi Mini Pure version OpenWrt compatible kernel firmware, integrated rt2860v2, mt76x2e Drive

code of the relevant units as well as LINTEL, DQ and other great gods contribution: https://github.com/qdk0901/openwrt-mt7620 Known Issues:1, unable to configure wireless via Luci. This is the original Ralink-driven mishap, please refer to the example configuration/etc/config/wireless below.2, 5G drive using samba will be smoked, pandorabox also have this problem, see http://www.right.com.cn/forum/thread-149292-1-1.html#pid936103. change history: 201

Linux LVM Safely remove hard drive or partition tutorial

LVM logical volumes, which may consist of one or more hard disks or partitions, can safely delete hard drives or partitions in logical volumes. Applicable to the scene, I have two small hard drives, I would like to change one of the small hard drive to large. First of all, the logical volume of small hard disk, safely removed. The following is a detailed procedure for the operation. 1, view the partition situation [Root@iz94zz3wqciz data]# Df-hFileSystem Size Used Avail use% mounted on/DEV/XVD

Bandwidth operation Technology of Optical Network

The idea of optical network bandwidth operation is to make full use of the existing network resources and construct a bandwidth service network to provide real-time, end-to-end and variable bandwidth services. The traditional transmission network has many defects, which is based on the narrow-band TDM service. Lack of broadband services, data services support, the availability of multiple types of bandwidth bottlenecks; online bandwidth delivery is slow, providing an end-to-end business needs t

Cisco FAT AP Configuration Online

INTERFACE, radio0-802.11n 2.4GHz and radio1-802.11n 5GHz are set here.A. By default, it is not turned on,B. On this page, click Setting, select Enable Radio here, and click Apply in the lower right corner.C. Then, return to radio0-802.11n 2.4G status and view the status, and you can see that the soft status becomes the Enabled,hardware status to up. This enables the wireless capability of the 2.4G band.3. Encryption settingsSecurity-encryption Manager, opening cipher to AES CCMP at 2.4G and

CentOS5.6x32 installation Oracle11g graphic tutorial

The SWAP installed on oracle11 must be above 2.57G. Therefore, when installing centos, make sure that swap is larger than 2.57G. The SWAP installed on oracle11 must be above 2.57G. Therefore, when installing centos, make sure that swap is larger than 2.57G. I. Runtime Environment Note: The SWAP installed on Oracle11 must be above 2.57G. Therefore, when installing CentOS, make sure that the swap is larger than 2.57G. System Environment: centos 5.6 32-bit (graphical installation)Hard Disk Par

Solutions to errors reported during 6 GB Database Import

Tool Selection I. Sqlyog is a powerful tool, but in the face of a 5G database, it can only strike, simply put, the local import can be, from the local import server can not.II. Phpadmin comes with this, but it's okay, but it's never used in the end, because it's invisible, because up to 50 MB, although you can modify the configuration file to upload but 5 GB, forget it, no confidence.3. Another is a PHP script. It seems to be written by Germans. This

UWP uses the OneDrive cloud storage 2.x API (i) "All-network debut"

= windows.storage.applicationdata.current.roamingsettings;roaming. values["key"" roaming settings ";// Roaming folders var roamingfolder = Windows.Storage.ApplicationData.Current.RoamingFolder; // create a file within the roaming folder, var await roamingfolder.createfileasync (filename, creationcollisionoption.openifexists); // Write Content " content that needs to be synced ");If your data is small, such as some basic settings, as well as the user name password and other small files, with thi

Basic concepts of Android wlansubsystem Parsing

omitted), and 802.11a/B/E/g/h/I ..... and so on. I will focus on 802.11a/B/E/g/h/I. 802.11aThe High-Speed WLAN protocol uses the 5G Hz band. The maximum speed is 54 Mbps. The actual usage rate is about 22-26 Mbps. Strong anti-interference capability and fast transmission rate. Because of the high frequency, the transmission distance is greatly reduced. Being incompatible with 802.11b is the biggest drawback. 802.11bCurrently, the most popular WLAN pr

Connect two Web Servers through NFS

xshell to log on to www1 > SSH 172.16.14.1 3) modify the host configuration file # Vim/etc/sysconfig/network // modify the following line Hostname = www1.dean.com # Hostname www1.dean.com # Vim/etc/hosts // Add the following line 172.16.14.1 www1.dean.com www1 The host name has been changed to www1. # Login > SSH 172.16.14.1 [Root @ www1 ~] # In the same step as www2, change the host name to www2 (IP configuration to 172.16.14.2) [Root @ www2 ~] # Iii. Configure the NFS server and install the

4790k air-cooled superfrequency Test

I. Configuration CPU: 4790 KB Motherboard: ASUS Z97-K. Memory: 8 GB of veganp DDR3-1600 Video Card: MSI r7850 TF 2gd5 Power Supply: antike vp500 Radiator: Big cream Tower Hard Disk: Seagate st1000dm003 1 Tb Ii. Standby running points 1. 3dmark11 2. Master Lu 3. Standby temperature (big tower) Iii. overclocking Test 1. Mo dian (maximum 1.2 V) 4.7G Temperature 6 minutes after stress testing 1 million running points Chess running score 2. Mo Dian 4.8g The temperature is basically the same

Classic interview questions

actually includes step 2 .)Reference answer: Same as above. Questions extended:1. There are 10 bottles of pills, some of which contain overweight pills. Ordinary pills 5g/tablet, overweight pills 6g/tablet, the number of pills per bottle is the same. Please use only one balance, once, to find out which bottles contain overweight pills. (Answer: Take 1, 2, 4, 8, 16, 32, 64, 128, 256, and 512 pills respectively) 2. There are n bottles of pills, some of

Record the dual-series installation of RedhatFeoraLinux8 in Windows 7

it is an iso image file on the internet, pay attention to the supported CPU, some of which are 64-bit. The specific analysis depends on your hardware configuration, and you can simply dial the disk after the download, that's what I got. (2) are two new drives of the proper size available under Windows 7? According to your personal preferences, I use 20G and 5G. It is best to format the score in Fat32 format. After completing these steps, you can star

How to get on ins, teach you to register login ins method

Domestic can not directly login ins, but the small part of the way, here to share the method to everyone, easy to remember points like column1. Need auxiliary Work *: 5G Accelerator, Android Apple Mac All devices can be downloaded2 Niang Search: 5G accelerated organ Network (can find me on the official website Penguin contact me), into the official website, download management, one-click Download after inst

Php resumable Upload

eat 1 GB of memory on the server.During Flash upload, the entire file is added to the memory, which is a serious problem. Because if you want to upload 5G files, Flash will also load all 5G files into the memory. This will seriously affect the user experience. This is because the user's computer is in a false state. Generally, the user's computer is 2 GB, so the user crashes directly, the memory is insuffi

How to implement php without interrupting download for a long time! Urgent! Urgent!

executing the task for more than an hour... Hello, one hour of execution is because there are too many files to be downloaded, because I downloaded them cyclically. where to stop the download, and where to download it next time? Okay, I don't know how to make the PHP program that downloads 5G Files run stably for several hours. All of the above are circular crawling solutions. if you want to use one capture, you cannot provide valid suggestions. Ok

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