Notepad++ using a lof of CPU

[PeterJones]

@Emerson-Carvalho-de-Souza ,

Any idea?

Plenty. Most of which were enumerated above. You’ve only answered questions to two of the many queries posted above. Some that you haven’t answered:

Share ?-menu Debug Info

Look at the recent-file-history (either in main File menu or a submenu thereof), and make sure there aren’t any

Look at your current session and see whether there are any network drives or mapped drives for the files that are open.

Look for virus scanners or the like that might be interfering with Notepad++'s running.

Try a portable edition of the same version and see if it behaves the same. Try a portable edition of a different (newer or older) version and see if it behaves the same.

Is it only when large files are loaded, or any time? (If so, how large?)

Is there a syntax highlighter lexer enabled (ie, is the Language menu selected None (Normal Text) or one of the others. If a different lexer is enabled, if you manually change it to None (Normal Text), does the CPU usage stay high, or does it drop to reasonable levels

If you exit and/or reboot, does it stop using large CPU levels?

[Emerson Carvalho de Souza]

Hi @PeterJones , I’m sorry.
On my recent files I have only 1 path, and no files opened.

Notepad++ v8.1.4 (64-bit)
Build time : Aug 21 2021 - 13:04:59
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line :
Admin mode : OFF
Local Conf mode : OFF
Cloud Config : OFF
OS Name : Windows 10 Pro (64-bit)
OS Version : 2009
OS Build : 19043.1237
Current ANSI codepage : 1252
Plugins : none

[PeterJones]

@Emerson-Carvalho-de-Souza said in Notepad++ using a lof of CPU:

On my recent files I have only 1 path

You don’t say whether that was a local path on your machine’s HDD/SDD, or whether it was a network path. Which is really the information I was going for. But you could try File > Empty Recent File History and see if the performance improves when you restart.

Or, as noted above, do the Settings > Preferences > Recent Files History and turn on the Don't check at launch time, which makes it so Notepad++ won’t try to see if files in the Recent Files History still exist or not.

and no files opened.

Okay

With the version you supplied, I have been using it since the day it came out with no unexpected high-CPU events. So it’s not just the version. It’s something specific about your setup, and unfortunately, as a fellow user, there’s nothing more that I can do to help you. I have already suggested everything I can think of. Don’t forget to try everything already suggested in this thread.

Good luck.

[lukas venuti coelho]

Hi guys, how are you?

I had no problems wich the portable version of notepad++, I’m using it that way as it was impacting my machine resources.

I had the same problem installing the application, I tested several versions, it could be a BUG with Win10 too.

[Claudio Neves]

Hello!

My Notepad++ version 8.1.5 (32-bit) was constantly using 20-30% of CPU, even without doing anything on it, and just small files opened.

I’ve uninstalled it, installed version 8.1.8 (64-bit), and the high CPU usage continued. Disabled all plugins renaming the plugins directory, and issue persisted.

Debug Info:
Notepad++ v8.1.8 (64-bit)
Build time : Oct 19 2021 - 17:02:51
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line :
Admin mode : OFF
Local Conf mode : OFF
Cloud Config : OFF
OS Name : Windows 10 Pro (64-bit)
OS Version : 2009
OS Build : 19043.1288
Current ANSI codepage : 1252
Plugins : none

I have only around 8-10 files, all with less than 1MB. I really don’t have any idea of what could be causing this high CPU usage.

I’m available to make whatever tests that may help finding what’s causing this high CPU usage .

Thanks,
Claudio Neves

[artie-finkelstein]

testing (ordered by increasing effort):

• install the portable version instead (in a separate location)
• install the portable x86 (32 bit) version instead (in a separate location)
• cold reboot the computer (power cycle) and exit as many other applications as possible before starting the portable Notepad++ version
• cold reboot the computer (power cycle) and run NO other applications before starting the portable Notepad++ version

Note: One or more of the above may not be possible in a corporate environment

FWIW: approximate commonalities-

• Windows 10
• 64 bit version of Notepad++
• Zoom (the application) has seemed problematic, but that may just be me suspecting the whiteboard function

Disclosure: I don’t use any of the above (Win 10, 64 bit Notepad++ or Zoom); I’m condensing observations in this and other threads

[Andre Viol]

Same problem here.
Debug info:

Notepad++ v8.1.9.3 (64-bit)
Build time : Dec 6 2021 - 19:21:37
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line :
Admin mode : OFF
Local Conf mode : OFF
Cloud Config : OFF
OS Name : Windows 10 Pro (64-bit)
OS Version : 2009
OS Build : 19044.1415
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll NppExport.dll NppFTP.dll

No recent history.
Even with no plug-ins, same problem.
Same situation as mvlaza described: if I open a menu, CPU usage becomes normal (very low)
CPU usage around 30%
Zenburn theme but with default theme same problem

[Eduardo Schuster]

Same Problem,
No Docs open, no history check, CPU always in 25% or more.

Notepad++ v8.1.9.3 (64-bit)
Build time : Dec 6 2021 - 19:21:37
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line :
Admin mode : ON
Local Conf mode : OFF
Cloud Config : OFF
OS Name : Windows 10 Pro (64-bit)
OS Version : 2009
OS Build : 19042.1415
Current ANSI codepage : 1252
Plugins : DSpellCheck.dll mimeTools.dll NppConverter.dll NppExport.dll

[Ekopalypse]

@eduardo-schuster

DSpellCheck.dll is not a standard plugin, could it be that this is
an artefact from an old installation that is causing problems?

[Aguilar Dias]

Same problem:

Notepad++ v8.3.2 (64-bit)
Build time : Feb 27 2022 - 03:35:46
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line :
Admin mode : OFF
Local Conf mode : OFF
Cloud Config : OFF
OS Name : Windows 10 Pro (64-bit)
OS Version : 2009
OS Build : 19044.1526
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll NppExport.dll

I’d tried all other options: Portable, 32-bit
But after a few minutes using it, the cpu reaches more than 20% of CPU

[Alexandre Lorenzatti]

I’ve realized I have had the same problem since 2022/03.

Curious thing or not, I have a AMD Ryzen 5 3500U processor. I’ve made some tests and realized that after firing up Notepad++, it’s always CPU 2 that goes to 100% consumption which makes turn on the fan (see picture below).

Follows debug info:
Notepad++ v8.3.3 (64-bit)
Build time : Mar 13 2022 - 17:20:02
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line :
Admin mode : OFF
Local Conf mode : OFF
Cloud Config : OFF
OS Name : Windows 10 Home Single Language (64-bit)
OS Version : 2009
OS Build : 19044.1586
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll

[Alessandro Fazenda]

Same problem here, Notepad++ keeps using CPU when not focused/minimized. No plugins, fresh install.
I noticed most people here are using pt-br version of Windows. Can this be a languegue related issue?

Notepad++ v8.4.4 (64-bit)
Build time : Jul 15 2022 - 17:54:42
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line :
Admin mode : OFF
Local Conf mode : OFF
Cloud Config : OFF
OS Name : Windows 10 Home Single Language (64-bit)
OS Version : 21H1
OS Build : 19043.1826
Current ANSI codepage : 1252
Plugins : none

[xomx]

@Alessandro-Fazenda

I have already tried to identify the culprit, but forgot to link here the corresponding N++ GitHub issue.

The good news is that for all the users who participated in the above issue, the problem solved miraculously itself at the end. But this also means that I could not finish my bug-chase.

What I think for now - it is not caused by N++ but either by Windows itself or by an AV. It is probably caused by a specific preinstalled hook (one user got hold of a usable callstack…).

[Alex Lins]

@blacksnc
Work for me! Thanks!

[Andre Viol]

The bug still persists for me. Using latest version.

[PeterJones]

@Andre-Viol ,

@xomx linked to the official issue months ago. We in the Forum can do nothing to get bugs fixed – we can help users through the process of proving it’s a bug, and can sometimes find workarounds. But in the end, the official issues pages, like the one linked above, are where the official debugging occurs. If you want to remind the developers to continue working on the problem, there is the appropriate place.

In the discussion in that issue report, you will find links to debug versions, and requests for logs from that debug version. If it hasn’t been fixed yet, then you need to follow the instructions in that discussion, and post the results in that discussion, and hopefully @xomx will be able to take the information you provide there and help incorporate it into a fix.

Discussion Locked

This issue can only be fixed if people who have this problem participate in the official issue report at https://github.com/notepad-plus-plus/notepad-plus-plus/issues/11556 . Posting in this Forum discussion thread will not propagate the information to all the right individuals. Any further discussion on this problem needs to occur in the official issue. As a result, this discussion is being locked, to encourage you to use the issue tracker to discuss the known issue.