Tdesktop: Permanent high CPU usage

Created on 23 Dec 2014 · 28Comments · Source: telegramdesktop/tdesktop

Always uses 20 to 35% of my CPU even while doing nothing.
May be related to the constant "playing" of sound through pulseaudio.
(Xubuntu 14.10 i386)

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mokrates

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Most helpful comment

Same issue, version 1.2.1 on macos 10.13.2
Usage about 60-75% of CPU

SG5 on 14 Dec 2017

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All 28 comments

176 #179 #191 #258 #229

ChrisCA on 23 Dec 2014

With 0.7.7, this problem has been solved in Windows 8.1.
May you check this with Xubuntu?

ChrisCA on 16 Jan 2015

Can you fix it for Linux too? PulseAudio uses 8-9% of the CPU permanently + Telegram 2-3% = 10-12% CPU when idle. It's really annoying when you work on a notebook: fans always on.

Telegram 0.7.7
Fedora 21 Workstation
Linux 3.17.8-300.fc21.x86_64
pulseaudio 5.0-25.fc21
Intel® Core™ i5-3317U CPU @ 1.70GHz × 4

P.S. Thanks for the awesome messenger and its Android and Desktop clients!

halega on 18 Jan 2015

Linux openSUSE 13.2 i586 KDE.
PulseAudio uses 50% CPU, kmix 25% CPU.
Telegram not usable at all.
Multiple messages in console:
"ALSA lib pcm.c:7897:(snd_pcm_recover) underrun occurred"

paveless on 19 Jan 2015

Permanent high CPU usage under Windows 8.1 64-bit Sytem Process usage 15-20 %. If i close
telegram desktop program fan stop and the system process in task monitor going down to normal work. If i start telegram: system process coming up to 15-20 % on cpu usage and fan start on laptop and never stop!

Telegram 0.7.17
XPS Dell Laptop
Windows 8.1 Pro 64bit
Intel® Core™ i7 CPU

marcoklv on 21 Feb 2015

Same 20%-25% CPU usage on windows 7 (64bit). It is really annoying but unlike linux, there is no precise tool on windows to pinpoint the root cause of this cpu usage.

Desktop version is 0.7.17

mahmoodn on 24 Mar 2015

From version 0.8.22.dev pulseaudio (and any other audio) output should stop when there is nothing playing in tdesktop.

telegramdesktop on 6 Jun 2015

Still I see 15%-20% (on system process) cpu usage when telegram is running and the system is idle. I tested with 0.8.23.dev

mahmoodn on 6 Jun 2015

It's OK with 0.8.24 version now. PulseAudio consumes 0% of CPU while there's no sound playing. Tested in Fedora Workstation 22 and Ubuntu 15.04. Thanks!

halega on 10 Jun 2015

No. The problems still exists in Windows 7. I don't think this problem is going to be solved!
Please see the animated gif at http://goo.gl/skrgqb

As you can see in the last picture, the latest version 0.8.24 has been installed and when I start telegram, system process goes up to 15% which is high for an idle application (antivirus is disabled)

mahmoodn on 10 Jun 2015

I can agree - the Problem is still there in Windows 8.1, too with latest Telegram Version.

marcoklv on 10 Jun 2015

mahmoodn, marcoklv - this issue was about cpu usage in audio system in linux and it was fixed, the same was in Windows (with audio), it was fixed as well, so there is still a known problem with OS X corewlan bearer plugin (high cpu usage each 10 seconds) and some unknown problem with Windows.

What do you mean by "system process goes up to 15%"? it is not Telegram.exe process consuming cpu, but some other system process? .gif is not opening for me:

telegramdesktop on 15 Jun 2015

:-) yes not telegramm.exe is hte high cpu... if telegramm is strarted on windows system... the windows system service is running up over 15 % and start the van... so long the telegramm is open.... is telegramm closed the windows system process is o.k. and van goes down. And and and... everytime same .... but perhaps in windows 10 the problem was over (i Hope) ..... M.

marcoklv on 15 Jun 2015

That will be hard to fix, I even won't be able to find in my code what consumes cpu, because it is Windows who does :/

telegramdesktop on 15 Jun 2015

Yes i think the same - it depend from config on the windows maschine and i think the hardware config, too. On Ubuntu / Linux all it is ok! Only my windows has the prob......

marcoklv on 15 Jun 2015

The gif link works. Maybe that was a transient error on the web site. I totally confirm what marcoklv said. The gif link also shows that....

mahmoodn on 16 Jun 2015

So.. I have this 4-5 days system uptime, and after tens of thousands of messages, telegram client is north of 600MB of virtual memory and it's constantly using 10-20% of cpu, even when there's no activity and I open a plain chat with just text.
Is there anything I could do to report/profile this?

mirh on 24 Mar 2016

So.. I checked the high cpu usage threads with Process Explorer, and every time it seems each one has at least these three calls:

Telegram.exe!z_uncompress
Telegram.exe!opus_get_version_string
Telegram.exe!alIsAuxiliaryEffectSlot

mirh on 27 Mar 2016

Get the same problem, too. I use gperftools to inspect the cpu time used by opus, and I dont understand why opus_get_version_string takes a lot of time?

zycbobby on 25 Apr 2016

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