PMS on Windows 7, i5 3470. Constant 25% CPU usage. Process hacker shows thread using 25% CPU at C:\Windows\SysWOW64\ucrtbase.dll with Plex Media Server.exe. No media playing.
Tried repair installation, but did not resolve CPU issue. Tried downgrading to 1.14.0.5470. CPU issue gone.
Steps:
Uninstall Plex using control panel.
Obtain older installation from C:\Users\USERNAME\AppData\Local\Plex Media Server\Updates
Install older version.
Server Version#:1.14.1.5488
Player Version#:
I’ve got the same problem running on Windows 10 with all current updates, i5-2500 with 1.14.0.5488. It’s been using at least 1 full core of CPU time for weeks now, often more. The CPU usage was constant while the program was running regardless of Plex activity and never went away.
I took your downgrade fix and did the same, now the problem’s gone. Must be a bug introduced in build 5487 or 5488 – I checked several times to make sure that nothing was showing up in my Plex logs, no activity, no transcoding or sync jobs running, etc.
To reiterate – running build 5488 I had constant CPU usage problems by the Plex Media Server.exe process. Build 5470 does not have those problems.
This also happens on Linux with 1.14.1.5488 and goes away with 1.14.0.5465. I don’t think I can cross-tag this post with server-linux, however.
I’ve not seen this issue, nor experience it now, with 1.14.1.5488, Win10 Pro, I7-4790k.
But, I’ve just looked at my server CPU for the first time. I’ve been running this version since 12/20.
A few months ago there were issues with constant scanning of libraries when media couldn’t be matched. That was fixed to my knowledge.
Does this truly occur / start after installing?
Does this occur during transcoding?
After you’ve added a video or music?
Can you see any pattern when it occurs?
Same here on that version - with no activity/streaming. note - restarting pms makes it go away until it happens again. No idea what triggers it to start doing that. I’ll probably stay at this version and deal with it for now.
For those of you having the issue, try re-installing Visual Studio 2015 Runtime libraries.
When I installed Plex x.5488, VS2015 also asked to install (even though I already had it).
See if your version matches mine.
If not, perhaps re-installing the VS2015 14.0.24215.1 runtime will fix the CPU issue. (My google searching seems to indicate ucrtbase.dll is related to VS2015 package.
EDIT - found direct Microsoft download for 14.0.24215.1
https://download.microsoft.com/download/6/A/A/6AA4EDFF-645B-48C5-81CC-ED5963AEAD48/vc_redist.x86.exe
Via Where can I download Visual C++ Redistributables? | Microsoft Learn
reporting in to say that this fixed the problem for me.
i hadn’t even had the libraries installed.
i installed both the x64 and x86 versions of that particular runtime you said to install (VS2015 14.0.24215.1). restarted my computer and the problem is no more!
thank you for sharing, JamminR
edit: after a couple of hours of behaving normally, its back to constant cpu usage while idling.
2nd e: decided to downgrade to v1.14.0.5470 and the problem has disappeared (thanks ceevee!).
Then my guess is it’s one of Plex’s maintenance tasks. Only logs and an experienced eye looking at them would tell though. Hopefully someone will do both, post, and review.
How can I locate a download link for 5470 for macOS?
Officially, you can’t. I don’t think plex maintains archive list of older for quite some time now.
If you had pms download it instead of manually, you should find where pms keeps its metadata for macros, and may find it in the updates folder like originally mentioned in first post for Windows
how did you downgrade where can find older sever versions
@bobzool - read the posts from CeeVee.
It’s even QUOTED in the last reply immediately before yours.
If you can’t find it there, then they don’t officially exist.
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