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Anson - I have Visual Studio 2015 with the RTM release 1 on Windows 7. If I open up Fiddler4, I see hundreds or more calls a second to localhost/vshub/sameGuidHereOverAndOver. This is completely unacceptable - I don't know what vshost.exe thinks it is doing, but it is completely gone nuts. I can kill the process and it still happens. May have to go back to 2013...
– Mario
Commented Oct 16, 2015 at 15:41
4

@Mario - as you've seen vshub often acts as a local http server, so it's expected you would see some traffic whenever it's running (http is acting as the IPC). 100s of requests per second for any sustained period of time is definitely a bug. You could check logs in %temp%\VsHub which should indicate if there are any exceptions being thrown, and obviously you've already figured out how to inspect the traffic. The best thing to do would be to report this as an issue through connect.microsoft.com since it'll give us a channel to collect the logs and such and try to make sure it gets fixed
– Anson Horton
Commented Oct 18, 2015 at 6:26
28

Here is Microsoft.VsHub.Server.HttpHost64.exe being "lithe" on my machine - imgur.com/DKvSNqf - that's 1GB of RAM it peaked out at. Nice.
– sh1rts
Commented Nov 1, 2015 at 23:04
7

@sh1rts - I understand your frustration. The "lithe" comment I made above was targeted at vshub.exe. Microsoft.VsHub.Server.HttpHost64.exe is the host process that runs various services, including some that can be very memory intensive (e.g. the diagnostic tooling that starts when you use F5, or if you explicitly choose to do memory or ui responsiveness analysis). You can try some of the toggles I mention above to disable some of those services to see if that helps - but generally we'll be working to reduce the overall memory overhead in future versions.
– Anson Horton
Commented Nov 4, 2015 at 2:51
17

So what is the way to stop seeing hundreds of /vshub/GUID requests in Fiddler. This is making it impossible to debug any HTTP client in Visual Studio, because for every step while debugging I see 10+ requests in fiddler and the request I'm interested in is lost :-(. Besides it's seriously inefficient way of inter-process communication to make HTTP requests on localhost.
– Đonny
Commented Jan 8, 2016 at 15:18

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