So I have come across a very strange issue. While I was watching a full HD .mkv video (~9 GB) in VLC media player on my T60, there were micro stutters in like every 3-4 seconds. I opened up task manager, and to my surprise the cpu usage was varying between 40-70%, and the cpu frequency was constantly changing between 1.86-1.33 ghz. So that indicated to me that my cpu should easily handle the video.
I use a program called cpugenie to run my cpu undervolted, and it also has option to enable and disable the different cpu frequency states. So I decided to lock my cpu to 2 GHz and see what will happen. I played the same video, and it was completely smooth, no stutter at all.
So my question would be, has anyone experienced something like this on his own computer? I have no idea why is the automatic cpu frequency scaling is so aggressive, that it puts it in a slower state than it's needed (or it can't rump up in time when it's required ?), I have never heard anything like this before. I want to add that this experience only happened in this one scenario so far (using vlc player), when I start a youtube video in the browser, it just jumps up to 2 ghz, and stays there for the whole video. But with vlc, the cpu frequency keeps jumping all over the place.
Take a look at our
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message
Full HD video stutter because of CPU frequency scaling!
-
- Junior Member
- Posts: 292
- Joined: Mon Oct 24, 2016 12:16 pm
- Location: Plymouth, United Kingdom
Full HD video stutter because of CPU frequency scaling!
Thinkpad T60, 15" Flexview, with mods (Xiphmont's LED mod, T500 heatsink, cpu undervolt, reinforced frame)
Thinkpad T601, 15" Flexview, with mods (Xiphmont's LED mod, T500 heatsink, cpu undervolt, reinforced frame)
Thinkpad X32
Thinkpad T22
NEC ProSpeed SX/20
Thinkpad T601, 15" Flexview, with mods (Xiphmont's LED mod, T500 heatsink, cpu undervolt, reinforced frame)
Thinkpad X32
Thinkpad T22
NEC ProSpeed SX/20
-
- Senior ThinkPadder
- Posts: 2244
- Joined: Thu Jul 30, 2015 11:29 pm
- Location: Boston, Massachusetts
Re: Full HD video stutter because of CPU frequency scaling!
I believe Intel Speedstep can be further disabled in the Thinkpad BIOS. If you're using Windows you can also lock the processor's speed to maximum with Windows power options or Lenovo Power Manager.
P71 X330 T60 et al
2 finger scroll on old Synaptics touchpads
2 finger scroll on old Synaptics touchpads
-
- Junior Member
- Posts: 292
- Joined: Mon Oct 24, 2016 12:16 pm
- Location: Plymouth, United Kingdom
Re: Full HD video stutter because of CPU frequency scaling!
Yes I was pretty sure I could do that in BIOS (or even in that program I use for undervolting), but that would be pretty bad for power consumption and heat if the cpu was constantly locked to a high frequency. I wonder if there is a way to leave speedstep working, but be more careful and don't lower cpu speed in such an aggressive fashion.
Thinkpad T60, 15" Flexview, with mods (Xiphmont's LED mod, T500 heatsink, cpu undervolt, reinforced frame)
Thinkpad T601, 15" Flexview, with mods (Xiphmont's LED mod, T500 heatsink, cpu undervolt, reinforced frame)
Thinkpad X32
Thinkpad T22
NEC ProSpeed SX/20
Thinkpad T601, 15" Flexview, with mods (Xiphmont's LED mod, T500 heatsink, cpu undervolt, reinforced frame)
Thinkpad X32
Thinkpad T22
NEC ProSpeed SX/20
-
- Similar Topics
- Replies
- Views
- Last post
-
-
T440p + Ultra Dock, but dock video out (HDMI) not working
by Arf the Lab » Sat Nov 04, 2023 6:58 pm » in ThinkPad T430-T490 / T530-T590 Series - 6 Replies
- 5283 Views
-
Last post by RealBlackStuff
Mon Nov 06, 2023 1:39 am
-
-
-
W530 - Win-10 Video Driver Update
by FrankK-F » Fri Dec 15, 2023 2:47 pm » in ThinkPad W530/W540/W541/W550 Series - 1 Replies
- 1723 Views
-
Last post by ac427
Thu Apr 04, 2024 8:58 am
-
-
-
FS: Intel Core i7-3630QM CPU + RAM
by PiZzA EnGiNeEr » Mon Oct 30, 2023 12:26 am » in Marketplace - Forum Members only - 1 Replies
- 2141 Views
-
Last post by wilocampo
Thu Nov 30, 2023 2:59 am
-
-
-
Thinkpad 770 Bios mod for cpu upgrade
by franjimo24 » Sun Dec 10, 2023 8:14 am » in ThinkPad Legacy Hardware - 6 Replies
- 5395 Views
-
Last post by solidpro
Tue Jan 23, 2024 4:02 pm
-
Who is online
Users browsing this forum: No registered users and 29 guests