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Just typing 'hg' results in a 15 second response time to show me the list of commands. I've tried uninstalling TortoiseHG and installing a newer version. I even uninstalled tortoise and installed just the command line. Same result.

I ran procmon over the exe and it showed that the slowness is in accessing the library.zip file which I believe is the python modules. It is fast when reading, but it has approx 0.3 second lag when it attempts this line:

Operation: CreateFile
Path: C:\Program Files\Mercurial\library.zip
Result: SUCCESS Detail: Desired Access: Generic Read, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, Write, AllocationSize: n/a, OpenResult: Opened

This line occurs often enough with the same delay each time to be the cause of this problem. I ran procmon on another developer's machine and it has the same line, but it happens instantly. Other than that it seems to make all the same read/writes as mine.

I'm unsure what file it would be creating, seems a little odd. Still, its a real PITA to wait 15 seconds on every HG operation. Just doing a pull and update is now 30 seconds!

Its worth mentioning that this used to work fast and I'm unsure of what's different now. It was fine as much as a week ago and I've not installed any new software on my machine since then.

Other details of possible interest: - I run with local admin privileges - UAC is enabled - HDD is a toasty SSD and machine is only a few months old - Process CPU is not maxing out as far as I can tell but certainly some spikes - Plenty memory available

Any other hints? This is killing my productivity as you can imagine.

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This question is a little open-ended and it is better to ask them on [email protected] where people can offer suggestions and do further debugging. StackOverflow is for "How do I do X?" questions where one can give a precise answer. – Martin Geisler 2 days ago
Hi Martin, I didn't realise my question was open ended. It seems very specific: "Why is HG command line running slow even for local access?". I then proceeded to identify all investigations I had done and information discovered. Hopefully its something that a python or mercurial expert will have seen before and have a very specific answer for. – Developmental 2 days ago
I liked your debugging, it was much better than most I've seen! However, I think it's difficult to say what is wrong without further discussion (asking you to try this or that) and this is where a mailinglist works better, IMHO. I've worked with Mercurial for years and I haven't seen your problem before. – Martin Geisler yesterday
Probably a virus scanner? – Ringding yesterday
I was about to suggest defragging, in case the .zip is spread around the drive, but on an SSD that wouldn't do much. Incidentally, the first run of hg on my work machine can take a few seconds, but after that it's speedy, I guess due to caching, so maybe something has changed with your drive access? Or maybe the fact that the SSD is "toasty" is the issue - cool drives run much better :) – icabod yesterday

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