PowerShell dynamically obtains the memory consumed by the current script

Source: Internet
Author: User

PowerShell dynamically obtains the memory consumed by the current script

This article mainly introduces how PowerShell can dynamically obtain the memory consumed by the current script running. This article describes how to implement the script function. For more information, see

To roughly understand how much memory a script consumes, or how much memory you consume when saving the result to a variable in PowerShell, you can use the following function:

?

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

# Requires-Version 2

 

$ Script: last_memory_usage_byte = 0

 

Function Get-MemoryUsage

{

$ Memusagebyte = [System. GC]: GetTotalMemory ('forcefullcollect ')

$ MemusageMB = $ memusagebyte/1 MB

$ Diffbytes = $ memusagebyte-$ script: last_memory_usage_byte

$ Difftext =''

$ Sign =''

If ($ script: last_memory_usage_byte-ne 0)

{

If ($ diffbytes-ge 0)

{

$ Sign = '+'

}

$ Difftext = ", $ sign $ diffbytes"

}

Write-Host-Object ('memory usage: {0: n1} MB ({1: n0} Bytes {2}) '-f $ memusageMB, $ memusagebyte, $ difftext)

 

# Save last value in script global variable

$ Script: last_memory_usage_byte = $ memusagebyte

}

You can run Get-MemoryUsage at any time. It will return the memory consumed after the last call of the current script, and compare it with the running result of the last call of Get-MemoryUsage, and display the memory increment.

The key point here is that GC is used. NET Framwwork is responsible for garbage collection, usually does not immediately release the memory, to roughly calculate the memory consumption, the garbage collector needs to be specified to release unused memory [gc]: Collect (), then count the allocated memory.

To better demonstrate the above functions, let's look at a call example:

?

1

2

3

4

5

6

7

8

PS> Get-MemoryUsage

Memory usage: 6.7 MB (6,990,328 Bytes)

PS> $ array = 1 .. 100000

PS> Get-MemoryUsage

Memory usage: 10.2 MB (10,700,064 Bytes, + 3709736)

PS> Remove-Variable-Name array

PS> Get-MemoryUsage

Memory usage: 7.4 MB (7,792,424 Bytes,-2907640)

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.