Tdesktop: High CPU Usage after PC is resumed from standby

[Hades32]

Steps to reproduce

1. Telegram is running
2. Suspend PC
3. Resume PC

Expected behaviour

I shouldn't notice anything

Actual behaviour

CPU on a Surface Notebook i5 is ~50% and severly slows down the whole resume process

Configuration

Win 10 uptodate

Version of Telegram Desktop:
1.3.14

Used theme:
Night Mode on

[stek29]

What if PC stays in standby for a short amount of time?

[Hades32]

Just tested. It seems, like there is a minimum time the PC has to be in standby for the issue to occur. Only a few seconds don't seem to trigger it.

[stek29]

@Hades32 probably it's just fetching all the updates from last time it connected tg servers.
Does just restarting the app help?

[Hades32]

It eventually settles down, so maybe that's it, but I really don't see why that would need such an extreme amount of CPU on an i5. And it takes rather long even if only a few (text only) updates occurred.

[nickaein]

@Hades32 How long it takes until it settles down? Can you also check whether Telegram has high IO disk usage?

[mcrapts]

I'm also experiencing this issue. It takes minutes for my laptop to resume from standby just because of Telegram. Everything is slowed down.

[frankvm]

Here also. High CPU for 30 seconds after resuming from sleep. Whole computer is partly unresponsive in those 30 seconds.

[N8Z7JMYLU]

Does this issue need any more details for it to be fixed? It still persisting with version 1.4.8.0, the time to settle down to normal usage is taking 5+ minutes

[AndreyRa]

Same behaviour last half of year. Already tried to re-install Telegram without any effect.

[smfilipe]

The problem still exists in version 1.5.9
My PC becomes unusable for at least 2 minutes on resume if I have left telegram open during sleep, otherwise my PC needs about 6-8 seconds to resume.
The priority of this bug should be increased.

Meanwhile, can somebody recommend an alternative desktop app for telegram?

[nickaein]

You should provide more details so this issue can be tracked down:

Operating system:

Version of Telegram Desktop:

Used theme:

Logs:

Insert log.txt here (if necessary)

[smfilipe]

It's the version 1.5.9 as told in previous comment and it's the same conditions as the first reporter.

Operating system: Windows 10 uptodate
Version of Telegram Desktop: 1.5.9
Used theme: Default theme

[AndreyRa]

Operating system: Windows 10 Version 10.0.17763.253
Version of Telegram Desktop: 1.5.11
Used theme: Night Mode
I providing you screenshot of this behaviour from TaskInfo task manager. You can see which thread consumpts a lot of CPU. It some thread that is related with WINMM.dll ! PlaySoundW calls.

[ZXByteman]

The same issue on Telegram 1.5.15 and up-to-date Windows 10.
After resume from sleep/hibernate Telegram App consumes almost 100% of CPU resources. If I close and reopen app just after exiting from sleep or hibernate, issue does not appear.
Hardware: Dell Venue 11 7140, it is getting hot and slow, this is how I've detected this issue happen.

[AndreyRa]

1.5.15 Same behaviour. The only app that drains down battery of my notebook at startup. Very dissapointed.

[damat]

This has to fixed. I'm tired of relaunching Telegram each time after sleep!

[ZXByteman]

Unfortunately this issue still exists in 1.6.3 version.

[smfilipe]

The Telegram client is unusable because of this issue.
The alternatives are Telegram Web or Unigram. For now, I've replaced Telegram client with Unigram in Windows.

[AndreyRa]

Thank you damat for your comment! This gave me the idea of how to automate it.
I have prepared workaround solution that just kills telegram process and runs it again in case of return from hibernate. Zip-archive contains the definition of the task scheduler and a bat-file for the automatic installation of this task.

KillTelegram.zip

1. Just unzip file, and run "setup (RUN AS ADMINISTRATOR).bat" with an administrator rights.
2. Please check that task with the name "Kill Telegram After Hibernate" have appeared in the scheduler list.
3. This task must be run from the same username as yours, please check this carefuly.

[damat]

You are Russian, Andrey, aren't ya? ;) I'll give it a try, thanks!

[eyehol3]

I'm experiencing the same issue, that's dissapointing

[sabuty]

Same issue here. Sounds are disabled in the Telegram Desktop App, which makes the calls to PlaySoundW even more curious.

[GitLad]

Are you gonna fix it, it's not a rocket science? Stop asking for version / windows too, it's the same as everyone already reported 10+ times.

It's not about even fixing a specific bug, it's about how aggresive you let telegram be, use up unlimited resources, you should rewrite the code for processing and never allow it reach such bottlenecks.

[nickaein]

Are you gonna fix it

There is no "you". This is an open-source project with contributors that are mostly volunteers.

[ilya-fedin]

you should rewrite the code

Let's rewrite it, do a good deed for everyone!

[stale[bot]]

Hey there!

This issue will be automatically closed in 7 days if there would be no activity. We therefore assume that the user has lost interest or resolved the problem on their own.

Don't worry though; if this is an error, let us know with a comment and we'll be happy to reopen the issue.

Thanks!

[GitLad]

Are you gonna fix it

There is no "you". This is an open-source project with contributors that are mostly volunteers.

Sherlock, was obvously talking to the active contributors, so yes ofc there is a "you".

Especially those who get paid to do nothing but oversee PRs.

If you can't do anything then don't get engaged with the project, it's a good project and some org would take it under their wing gladly, once wannabe contributors dwindle down.