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Dropbox desktop client on Windows 8.1 is using hundreds of thousands of Semaphore handles

Dropbox desktop client on Windows 8.1 is using hundreds of thousands of Semaphore handles

jrivettcz
Explorer | Level 3

Dropbox is using an insane number of handles on my Windows 8.1 system. As of five minutes ago, it was using more than 175,000 handles. Most of them are 'Semaphore' handles. I've confirmed the number of handles with a few different tools.

 

If I close the Dropbox client and start it again, the number of handles starts off at about 4000 and ramps up quickly to 8000. Over the next few days it gradually climbs to 175,000+.

 

This excessive handle use by Dropbox doesn't seem to cause any problems, and the system continues to run just fine otherwise. But 175,000+ handles? That can't be good, and it's definitely not right.

 

I've found very little about this problem searching online. The consensus seems to be that I should do a complete Dropbox uninstall and reinstall.

 

I'm using Dropbox v114.4.426.

8 Replies 8

Re: Dropbox desktop client on Windows 8.1 is using hundreds of thousands of Semaphore handles

Jay
Dropboxer
Hi @jrivettcz, thanks for messaging the Community!

If you're not on a Dropbox Basic plan with more than 3 devices connected, could you try an advanced reinstall of the app using the steps in this link?

If the issue persists after this, please feel free to reach back out.

Jay
Community Moderator @ Dropbox
dropbox.com/support


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Re: Dropbox desktop client on Windows 8.1 is using hundreds of thousands of Semaphore handles

jrcz
Explorer | Level 3

I can no longer log in as the user I used to post this originally, and I have no idea why.

 

I have questions.

 

[1] What's a DropBox Basic plan, and how can I determine whether I'm 'on' a DropBox Basic plan?

[2] How do I know how many devices are connected?

 

I have multiple DropBox accounts, and I find managing them to be extraordinarily difficult. Is there a web page somewhere that explains how to handle multiple accounts?

 

Re: Dropbox desktop client on Windows 8.1 is using hundreds of thousands of Semaphore handles

Megan
Dropboxer
Hey @jrcz, let's see how I can help here! 

You can find out more in regards to your Dropbox subscription here

As for your connected device. You can see a list of them on your Security page.

If you have any other questions, don't hesitate to come back.

Megan
Community Moderator @ Dropbox
dropbox.com/support


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Re: Dropbox desktop client on Windows 8.1 is using hundreds of thousands of Semaphore handles

jrivettcz
Explorer | Level 3

I've reinstalled the Dropbox application as recommended. Handle use is at 7500 but remaining steady.

 

I'll add more information here as I continue to monitor things.

Re: Dropbox desktop client on Windows 8.1 is using hundreds of thousands of Semaphore handles

Hannah
Dropboxer
Thanks for the update @jrivettcz!

Let us know if you need anything else.

Have a great day!

Hannah
Community Moderator @ Dropbox
dropbox.com/support


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Re: Dropbox desktop client on Windows 8.1 is using hundreds of thousands of Semaphore handles

jrivettcz
Explorer | Level 3

Handle use is now at 92,500 and rising. The clean reinstall did not help.

 

Is there anything else I can try?

 

Re: Dropbox desktop client on Windows 8.1 is using hundreds of thousands of Semaphore handles

Hannah
Dropboxer
I guess there isn't really anything else you can do about this. 

You're not having any issues with the app otherwise, right? 

Hannah
Community Moderator @ Dropbox
dropbox.com/support


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Re: Dropbox desktop client on Windows 8.1 is using hundreds of thousands of Semaphore handles

jrivettcz
Explorer | Level 3

Presumably, eventually Windows will run out of resources and crash. And there's no way to predict when that will happen. So, you know, it's working fine now, but it's going to start affecting everything at some point.

 

I'm working with the tier 2 support folks at Dropbox. If they can confirm that this is normal handle use by Dropbox, and that it's not a resource leak, that's good enough for me. Although it's using 20 times as many handles as the next closest application, and I'm running some heavy stuff, which like I said seems crazy.

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Top contributors to this post

  • User avatar
    jrivettcz Explorer | Level 3
  • User avatar
    Hannah Dropboxer
What do Dropbox user levels mean?
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