-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-Dstat--help Help DescriptionVersatile tool for generating system resource statisticsDstat options:-C,--cpu enable CPU stats-c 0,3,total include Cpu0, CPU3 and Total-D,--disk enable disk stats-D Total,hda include HDA and total-G,--page enable page stats-I,--int enable interrupt
provide and OpenFlow protocol, topology and other related information query and configuration, the results of the query returned to the browser in JSON format, and the configuration will call related functions of the relevant modules, you can simply see the code to get the switch in the SDN network. The command to get switches is: http://ip:port/stats/switches, which first resolves the HTTP request (GET), and the required content (switches), and then
; otherwise, no data can be received.8. Function for obtaining the NIC status
Static struct net_device_stats * loopback_get_stats (struct net_device * dev){Struct net_device_stats * stats = dev-> stats;
Stats-> rx_packets = packets;Stats-> tx_packets = packets;Stats-> rx_by
Implementation of SQL Server native data from XML to generate JSON data instance code, xmljson
Example code for generating JSON data from XML with SQL Server native data
SQL Server is a relational database, and the query results are usually datasets. However, in some special situations, we need XML data. In the past few years, JSON has been used as a common data interchange format for webapis, how does the database generate JSON data? Today I wrote a DEMO.
1. Create tables and test data
SET NOCO
root. If you ' re trying to do them using and you'll need to change the sudo syntax slightly to something like these:$ sudo sh -c ‘echo 1 >/proc/sys/vm/drop_caches‘$ sudo sh -c ‘echo 2 >/proc/sys/vm/drop_caches‘$ sudo sh -c ‘echo 3 >/proc/sys/vm/drop_caches‘Note: There's a more esoteric version of the above command if you ' re to that:$ echo "echo 1 > /proc/sys/vm/drop_caches" | sudo shWhy the syntax? The program /bin/echo is running as root, because sudo of, and the shell that ' s redirecting
monitoring, the report output is 3 seconds apart, and the report outputs 10 results, you can run the following command:There are many parameters available in the Dstat command, which you can view with the Man Dstat command, and most of the commonly used parameters are:Versatile tool for generating system resource Statisticsdstat options:-C,--cpu enable CPU stats-c 0,3 , total include cpu0, CPU3 and total-d,--disk enable disk
length
#前置追加key中的value值, successfully returned stored, failed to return not_stored
Prepend MyKey 0 60 5
INCR Key num
#给key中的value增加num. If the key is not a number, NUM will be used to replace the value. Returns the added value
Incre MyKey 1
Decr
#同上
Ditto
Delete key [Key2 ...]
Delete one or more key-value. Successful delete returns deleted, no failure is returned not_found
Delete MyKey
Flush_all [Tim
backup back to DISK = N (TestDB)‘F:\SQLTEST\TestDB.bak‘With noformat,noinit, NAME = N‘testdb-Full Database backup', SKIP, Norewind, nounload, STATS =10go--Second emulated incremental backup DATABASE [TestDB] to DISK = N‘F:\SQLTEST\TestDBUpdate.trn‘With differential, Noformat, noinit, NAME = N‘testdb-Differential Database backup', SKIP, Norewind, nounload, STATS =10go--Third transaction log backups backup l
", \ n is the character entered when you press enter, indicating line feed) Command Line (the command line is actually a program ). The command line then calls/bin/ls to obtain the result ("a.txt"). The output text stream ("a.txt") is then sent to the screen and displayed, for example:
A.txt
Suppose we don't want to let the text stream flow to the screen, but to another file, we can useRedirect(Redirect) mechanism.
$ Ls> a.txt
Retargeting stand
behavior systems to make real characters behave. This part has risen to the AI level, leading naturalmotion in the industry.
We are still struggling. the introduction of animation middleware can quickly increase to 4. 5. Currently, there are few game applications. The following are some technical terms used in recent reading documents, from unity, vision, and Havok:
Animation clip (same as animation sequence)
Animation data units, such as "idle" clip, "Run" clip, and "walk" clip.
requirements, and we can provide an argument in the Profile.run () function, which is to save the file name of the output, and again, in the command-line arguments, we can add one more parameter to hold the output of the profile.customizing reports with PstatsProfile solves one of our needs, and there is a need: To view the output in many forms, we can solve it through another class of stats. Here we need to introduce a module pstats, which defines a
/haproxy. pid maxconn 4000 user haproxy group haproxy daemon # turn on stats unix socket stats socket/var/lib/haproxy/stats # response # common defaults that all the 'listen' and 'backend' sections will # use if not designated in their block # revoke defaults log global log 127.0.0.1 local3 mode http option httplog option dontlognull retries 10 option redispatch
Python scripts monitor docker containers and pythondocker containers
This article provides an example of how to monitor docker containers using python scripts for your reference. The details are as follows:
Script Function:
1. Monitor CPU usage
2. Monitor memory usage
3. Monitor network traffic
Code:
#! /Usr/bin/env python # -- * -- coding: UTF-8 -- * -- import sysimport tabimport reimport osimport timefrom docker import Clientimport commandskeys_container_stats_list = ['blkio _
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