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Two e1000 Nic and two tg3.
We use dell's poweredge servers, with a maximum of 750, 1650, and 1850 servers. Some time ago, the 750 and 1850 network adapters experienced overflow multiple times. In particular, a server with a large network traffic experienced packet loss almost every second. Then, I made unremitting and fruitful adjustments to the intel Nic parameters integrated into the motherboa
Varnish enables page Jump
Ngxin implements user-agent to access non-page pages. It is very simple, but we generally use the cache layer as the front end. The same principle applies to the cache layer.
We use Varnish today. Note that we implement 302 redirect instead of rewrite url.
Target: the iphone automatically jumps to m.bkjia.com to access www.bkjia.com.
Post Code
Sub vcl_recv {If (req. http. user-agent ~ "Iphone "){If (req. http. host ~ "Www.bkjia.com "){Error
iPhone:
IPhone5: 640*1136IPhone6: 750*1334IPhone6 Plus: 1242*2208Ideal viewport and dip (device logic pixel)
Ideal viewport is usually the screen resolution we call.
Dip (device logic pixel) is independent of the hardware pixel of the device. A dip occupies the same space on any device screen with pixel density.
For example, the hardware pixel of the Retina (Retina) screen display of MacBook Pro is 2880*1800. When you set the screen resolution to 192
Use the dbstart and dbshut scripts to automatically start and close the database:1. log on to the user root.2. Edit the oratab file of your platform.Open the/etc/oratab file:The database entries in the file are in the following format:SID: ORACLE_HOME: {Y | N | W}
Y and N indicate whether the script starts or closes the database. To enable automatic shutdown and startup, first determine the database instance ID, that is, the ID identified by the first SID, and then modify the final value to Y.
How to copy a Linux File System and maintain a fixed link-general Linux technology-Linux programming and kernel information. The following is a detailed description. As my Linux backup system, I have been switching and upgrading/replacing some general serial bus hard disks in my house recently. A 320 billion-byte Linux box is installed in/mnt/backup mode, and there is no space at first. (If you really want to know, it's Lenovo's notebook T43p. Run it with ubento.) This is after I removed 50 bill
of files in the directory.
Example: chgrp users install. Log
Chown: Change the file owner
Usage: chown [-R] owner file or directory
Chown [-R] owner: group file or directory
Example: chown Huli install. Log
Chown Huli: usersinstall. Log
Note: When we use CP to copy a file to another user, the owner and group of the file are not modified.
To completely belong to this user, you must modify the owner and group of the file.
Chmod: change file attributes
As mentioned above, the numbers correspondi
processed only after a processing thread is released. If the setting is too large, Tomcat startup takes more time. Therefore, it depends on setting a correct value for maxthreads.
In the preceding configuration, the maxthreads value is set to "250", which specifies the maximum number of concurrent requests that can be processed by the server. If not specified, the default value of this attribute is "200 ". Any extra concurrent requests will receive a "Connection denied" error prompt until anot
-core CPU. In fact, it only integrates the general-purpose processor with the GSM module. Generally speaking, it is a combination of ARM + DSP, while Intel'sThe CPU needs to be separately used with separate communication modules. Therefore, the power consumption of the two chips will definitely be greater than that of a single chip.
Of course, the price is also a very important factor, although TI's CPU needsIt is more expensive than Intel's CPU, But If Intel's CPU adds a communication processin
My research project is based on topology control on a super-large sensor network with thousands or even tens of thousands of nodes. Therefore, the maximum number of nodes has become my biggest concern.
This Digest self-Research Progress Report
To test the scalability of tinyos and tossim that I amUsing, I tried to test partition different testing values for tinyos compilation andTossim simulation.
With using the tinyviz graphic interface, I startedSimulation from 100 nodes. I have tried 100,20
between A and B respectively identifies the scroll bar and the distance to be rolled. There is a corresponding relationship between them, but these are not considered by our application developers, it is a programmer who designs the GUI interface of the operating system.
2. Determine whether the vertical scroll bar has reached the bottomAfter clarifying the above concepts, encoding is actually relatively simple. The following is the sample code:Code Description:The internal Div height is
]Suppose we have two tables,
Store_InformationTable
Store_name
Sales
Date
Los Angeles
$1500
Jan-05-1999
San Diego
$250
Jan-07-1999
Los Angeles
$300
Jan-08-1999
Boston
$700
Jan-08-1999
Internet SalesTable
Date
Sales
Jan-07-1999
cannot be viewed.
[Root @ example d] # ll
-Rwxrw-r -- 1 user1 userg 15872 oct 15 100.xls 0000100.xls new is created with user1, the default group is userg,
Drwxrwxr-x 2 user1 userg 4096 oct 15 100 # The folder permissions created by user1 are not the same as those of the group. The default group is userg, and user2 cannot be viewed.
My other configurations are as follows:
[Root @ example ~] # Cat/etc/passwd
User1: x: 500: 587:/a/home/user1:/sbin/nologin
User2: x: 502: 588:/a/home/user2:/sbin/no
-9\-\.\+]+) (; \s.+) $/"; /* Fileinfo extension-most Reliable method. * * Unfortunately, prior to PHP 5.3-it's only available as a PECL extension and the * more convenient fileinfo_mime_type Flag doesn ' t exist. */if (function_exists ("Finfo_file")) {$finfo = Finfo_open (Fileinfo_mime), if (Is_resource ($finfo)) {$mime = @finfo_file ($finfo, $tmp _name); Finfo_close ($finfo); /* According to the comments section of the PHP manual page, * It's possible that this function returns an empty string
Sales
Jan-07-1999
$250
Jan-10-1999
$535
Jan-11-1999
$320
Jan-12-1999
$750
We need to find out all the days with a turnover. To achieve this goal, we use the following SQL statement: SELECT Date FROM Store_Information
UNION
SELECT Date FROM Internet_Sales result:
Date
Jan-05-1999
Jan-
Any DS18B20 chip ID that uses its internal 64-bit ROM to store the displacement (this provides great convenience for our multi-point collection), I use a 3pin Package Chip, it is worth noting that DS18B20 can work normally with a data line and a ground line, that is, VCC is not necessary. Why? Because DS18B20 has a parasitic capacitor inside, when the voltage range of our data line is between 3.3 and 5 V, it will be converted to power, so when we have an external power failure, this power provid
## Change the value of ORACLE_HOME to specify the correct Oracle Home# Directory for your installation.
ORACLE_HOME =/u01/APP/Oracle/product/10.2.0/db_1## Change the value of Oracle to the login name of# Oracle owner at your site.#Oracle = Oracle
Path =$ {path}: $ ORACLE_HOME/binHost = 'hostname'Platform = 'uname'Export ORACLE_HOME path#If [! "$2" = "ora_db"]; thenIf ["$ platform" = "HP-UX"]; thenRemsh $ host-L $ Oracle-n "$0 $1 ora_db"ExitElseRsh $ host-L $ Oracle $0 $1 ora_dbExitFiFi#Case $1 i
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