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Windows系统资源监控,文件比较命令

来源:http://www.modeLspro.net 作者:千赢娱乐手机登录 时间:2019-11-04 02:39

comp命令:

星期日, 02. 九月 2018 11:58下午 - beautifulzzzz

  • 1、windows自带系统资源监控工具
  • 2、Windows监控的数据来源:Performance Counters
    • 2.1 Performance Counter架构
    • 2.2 Performance Counter数据结构
    • 2.3 消费Performance Counter数据
  • 3、使用基于PDH的python客户端

  // 描述:

图片 1

 

    逐字节比较两个文件或文件集的内容。 如果在没有参数的情况下使用,comp会提示你输入要比较的文件。

1. Introduction

Bluez is the default Bluetooth protocol stack on Linux. It should be present and installed on your Linux distribution. If not, building and installing from source is not too difficult:

  • Download the latest stable source release of Bluez from here. Unzip the compressed file you downloaded.
  • Install the headers and libraries required for Bluez compilation:

图片 2

 

  // 语法:

2. Download And Install

I follow the blog (Installing Bluez 5.44 onto Raspbian?) to install bluez-5.50.

Download the most recent version from the official page:.

For example, at the time of writing it was 5.50, so I used(on my pi):

wget http://www.kernel.org/pub/linux/bluetooth/bluez-5.50.tar.xz

Then I extracted it and built it:

tar -xf bluez-5.50.tar.xz
cd bluez-5.50

Read the README! It lists the dependencies and the configure switches:

Install the dependencies first: (glib, dbus, libdbus, udev, etc.)

sudo apt install libdbus-1-dev libudev-dev libical-dev libreadline-dev

note: If you do not install the libdbus-1-dev, you will later get this strange error:

configure: error: D-Bus >= 1.6 is required

once you've installed dependencies, you can configure switches:

./configure --prefix=/usr --mandir=/usr/share/man --sysconfdir=/etc --localstatedir=/var  --enable-experimental

then do:

make
sudo make install

It takes maybe 10 minutes to compile. After installing, you should find bluetoothd in /usr/libexec/bluetooth. You should also see bluetoothd in /usr/lib/bluetooth.

Go to each of these directories and type

./bluetoothd --version

You'll note that the one in libexec is new and the one in lib is old.

In order to make sure that d-bus is talking to you new BlueZ 5.50 and not your old BlueZ 5.43, you need to tell systemd to use the new bluetooth daemon:

sudo vim /lib/systemd/system/bluetooth.service

Make sure the exec.start line points to your new daemon in /usr/libexec/bluetooth.

For me, that wasn't enough. No matter what, upon restart I always got bluetoothd 5.43... So I just created a symlink from the old one to the new.

First rename the old file:

sudo mv /usr/lib/bluetooth/bluetoothd /usr/lib/bluetooth/bluetoothd-543.orig

Create the symlink:

sudo ln -s /usr/libexec/bluetooth/bluetoothd /usr/lib/bluetooth/bluetoothd
sudo systemctl daemon-reload

That should do it.

图片 3

1、Windows自带系统资源监控工具

我们都知道,Windows自带有系统资源监视器。主要有3个地方:

1) Windows的任务管理器的性能页签,包括了CPU,内存,磁盘,网络等系统资源的监控。它主要监控系统资源的总体使用情况,使用它,我们可以发现是否有资源达到瓶颈了等等。

 图片 4

 

2) Windows资源监视器

这个工具可以看出系统资源到底是由哪些进程消耗的。通过它,可以快速查看到到底哪些进程占用了你的系统资源。

 图片 5

3) 性能监视器

前两种工具已经提供你要监控的大部分功能,在某些情况下,可能仍然不能定位问题,这时候就需要你更进一步的了解系统的运行状况。那么这个工具就是一个不错的选择。

 图片 6

 

    comp [<Data1>] [<Data2>] [/d] [/a] [/l]  [/c] [/n=<Number>]

3. How to use the bluez and hcitool

2、Windows 监控的数据来源:Performance Counters

       Windows的这些监控工具之所以能够展示这些资源的情况,它们的数据来源都是一个叫Performance Counter的东东。

 

  // 参数:

3.1 setup bluetooth service

Start the bluetooth service and enable automatic startup, assuming you're using systemd as the init daemon:

sudo systemctl start bluetooth.service
sudo systemctl enable bluetooth.service

2.1 PerformanceCounter 架构

PerformanceCounter架构如下:

 图片 7

 

 

采用了Producer / Consumer 架构,支持多种客户端从Registry消费数据。

上图中,A 使用Registry接口来消费数据,而B 和 Performance Monitor两个客户端则使用了pdh.dll来消费数据。

 

 

 

    <data1> :  指定要比较的第一个文件或文件集的位置和名称。 可以使用通配符(*和?)指定多个文件。

3.2 hcitool scan for bluetooth devices

Before start scanning make sure that your bluetooth device is turned on and not blocked, you can check that with the rfkill command:

sudo rfkill list

If the bluetooth device is blocked (soft or hard blocked), unblock it with the rfkill command again:

sudo rfkill unblock bluetooth

Bring up the bluetooth device with hciconfig command and start scanning, make sure the target device's bluetooth is on and It's discoverable:

sudo hciconfig hci0 up
hcitool scan

Wait few moment to complete the hcitool scan or hcitool lescan, the results will be something like bellow:

图片 8

图片 9

Here 00:1A:7D:DA:71:0A is the bluetooth MAC address and SHEN-PC is the name of the bluetooth device, i.e. an PC.

note: use hcitool lescan will forever scan ble devices, if use ctrl c stop it, it will show error(ref to LINKS 4 to solve):

hcitool lescan
Set scan parameters failed: Input/output error

2.2 Performance Counter 数据结构

如果你想用程序来消费Counter的数据,不论使用哪种API来消费数据,不论使用哪种工具来消费数据,都需要了解Performance Counter的领域语言,也就是说要了解它内部的数据是如何组织的。

 

它的基本概念如下:

Machine:机器,这个没什么好说的,支持消费本机的监控数据,也可以消费其他其他的监控数据。

perfObject:可以理解为监控哪种资源,譬如说处理器,磁盘

instance:监控的资源可能有多个实例,多个网卡,多个CPU,多块磁盘等

counter:计数器,每一个instance都会有多个计数器,例如cpu的idle,user,interrupt都是一个counter

 

更直观的理解这些概念: 

 图片 10

 

 

    <data2>:   指定要比较的第二个文件或文件集的位置和名称。 可以使用通配符(*和?)指定多个文件。

3.3 bluetooth service discovery

Now we have the bluetooth MAC address of the target device, use the sdptool command to know which services (like DUN, Handsfree audio) are available on that target device.

sdptool browse 28:ED:6A:A0:26:B7

You can also use the interactive bluetoothctl tool for this purpose.

If the target device is present, you can ping it with l2ping command, requires root privilege:

➜  bluez-5.50  sudo l2ping 94:87:E0:B3:AC:6F
Ping: 94:87:E0:B3:AC:6F from B8:27:EB:8E:CC:51 (data size 44) ...
44 bytes from 94:87:E0:B3:AC:6F id 0 time 53.94ms
44 bytes from 94:87:E0:B3:AC:6F id 1 time 77.12ms
44 bytes from 94:87:E0:B3:AC:6F id 2 time 38.63ms
44 bytes from 94:87:E0:B3:AC:6F id 3 time 46.13ms
44 bytes from 94:87:E0:B3:AC:6F id 4 time 59.96ms
5 sent, 5 received, 0% loss

So, bluetooth service discovery is useful to determine the type of the device, like if it's a bluetooth mp3 player or it's a keyboard.

图片 11

2.3 消费Performance Counter数据

       从上面的架构图来看可以使用registry API或者 PDH.dll ,或者wmi等3种方式来消费数据。这两种API是C或者C 开发的。

 

1)Registry API :

 

2)WMI:

 

3)PDH API:

目前已知了两个版本:

C :

 

Python :

Pywin32中有一个win32pdh的模块,就是python版本的pdh。

 

 

其他工具:

4)windows自带的typeperf命令

5)nsclient

 

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