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Windows Forum / Windows Vista / Performance and Maintainance / February 2006

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Explorer - Folders launched in separate process at High Priority

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Adahn - 10 Feb 2006 17:49 GMT
Not sure if this has behavior has been in Windows 2000, but since XP, if you
choose the "Launch folder wonders in a separate process" option, any new
Explorer processes start in High priority.

Bug? feature? shouldn't it be based on the parent Desktop process..?
Andre Da Costa [Extended64] - 10 Feb 2006 18:43 GMT
Adahn, could you give me a step by step on this? I am in Vista 5270 right
now.
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> Not sure if this has behavior has been in Windows 2000, but since XP, if
> you choose the "Launch folder wonders in a separate process" option, any
> new Explorer processes start in High priority.
>
> Bug? feature? shouldn't it be based on the parent Desktop process..?
Adahn - 10 Feb 2006 22:39 GMT
Folder Options » View » Launch folder windows in a separate process

If you check that, and open [My] Computer or any other folder window -
you'll notice (from Task Manager) that the new Explorer.exe process
(there'll be at least two, one for the desktop, and another one for the
folder you just opened) always has a Base Priority of High..

> Adahn, could you give me a step by step on this? I am in Vista 5270 right
> now.
[quoted text clipped - 3 lines]
>>
>> Bug? feature? shouldn't it be based on the parent Desktop process..?
Homer J. Simpson - 10 Feb 2006 22:40 GMT
Good grief, that's still in Vista?

I've been seeing this in XP for years--I would've thought it would've been
fixed by now.

What about that handle leak for
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap?  I
can't keep any of my XP systems up for more than a week because of this...
Zack Whittaker (R2 Mentor) - 10 Feb 2006 23:48 GMT
Ahhhh so *that's* what it is!! :-o

I've been wondering what that little tick box has been doing ever since
2002!!! Is it better to have it ticked or not? I don't know :op

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Adahn - 11 Feb 2006 04:13 GMT
> Ahhhh so *that's* what it is!! :-o
>
> I've been wondering what that little tick box has been doing ever since
> 2002!!! Is it better to have it ticked or not? I don't know :op

So far the only benefit that option has had is to increase the chances of
your "desktop" (the process that handles the Taskbar, Start Menu,
Notification Tray etc.) staying intact in the event of a crash inside a
folder window...

Take the instance of how Build 5270 locks up when you try to touch a ZIP
file that contains subfolders - with the Separate Process option you could
just kill the frozen Explorer.exe task.

However, with that strange behavior of starting the new folder windows at a
High priority, when they freeze it tends to slow down the rest of the system
as well :(

as for performance during normal usage, I've yet to try it on a true
multiprocessor system to notice if there's any improved responsiveness, but
as it is, so far it seems like another one of those trademark Microsoft
hacks that try to cover up for base flaws in something else :(
Nicholas - 25 Feb 2006 06:10 GMT
Yes you're right. However if the first explorer.exe crashes, the windows are
intact but the taskbar and others are gone.

Come to think of it, this might not be a bug actually. See, if two instances
of explorer.exe are running concurrently, you would expect more
responsiveness from the window you ordered to open more than the taskbar.

But again... you could be right... it's a bug...

Regards

>> Ahhhh so *that's* what it is!! :-o
>>
[quoted text clipped - 18 lines]
> but as it is, so far it seems like another one of those trademark
> Microsoft hacks that try to cover up for base flaws in something else :(
Zack Whittaker (R2 Mentor) - 10 Feb 2006 23:48 GMT
I love it how even the more knowledgable ones learn from others :o) Very
cool.

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Peter Foldes - 11 Feb 2006 01:05 GMT
>I love it how even the more knowledgable ones learn from others :o) Very
> cool.

I hope you meant that comment above  as a joke Zack.

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>I love it how even the more knowledgable ones learn from others :o) Very
> cool.
Zack Whittaker (R2 Mentor) - 11 Feb 2006 12:40 GMT
LOL! Of course!!

Why didn't it come out that way? :o(

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Adahn - 11 Feb 2006 04:17 GMT
> What about that handle leak for
> HKCU\software\microsoft\windows\currentversion\internet settings\zonemap?
> I can't keep any of my XP systems up for more than a week because of
> this...

..eh what's this then? -_-a
Josh - 11 Feb 2006 17:29 GMT
Not sure about the leak he is talking about as I use this pretty
extensively, but that set of keys defines the zone that a web site will be
subjected to.  Under the domain sub key you would your site and the protocol
and what security zone you want the site to be in.  0=Local Machine Zone
1=Local Intranet 2=Trusted Site 3=Internet Zone 4=Restricted site zone.

josh
http://windowsconnected.com

>> What about that handle leak for
>> HKCU\software\microsoft\windows\currentversion\internet settings\zonemap?
>> I can't keep any of my XP systems up for more than a week because of
>> this...
>
> ..eh what's this then? -_-a
Homer J. Simpson - 13 Feb 2006 14:28 GMT
>> What about that handle leak for
>> HKCU\software\microsoft\windows\currentversion\internet settings\zonemap?
>> I can't keep any of my XP systems up for more than a week because of
>> this...
>
> ..eh what's this then? -_-a

I have an XP machine sitting next to me at the office that I rebooted at
some point on Friday.  My secondary development/test box...it hasn't done
anything all weekend.

As I'm typing this on Monday morning @ 9:30am, explorer.exe's handle count
is now showing 16,597.  According to Process Explorer, there's thousands of
references to the registry key I listed above.
PA Bear - 14 Feb 2006 03:24 GMT
WinXP-specific newsgroup:
news://msnews.microsoft.com/microsoft.public.windowsxp.general
--
~Robear Dyer (PA Bear)
MS MVP-Windows (IE/OE, Shell/User, Security), Aumha.org VSOP, DTS-L.org

> > > What about that handle leak for
> > > HKCU\software\microsoft\windows\currentversion\internet
[quoted text clipped - 10 lines]
> is now showing 16,597.  According to Process Explorer, there's thousands
> of references to the registry key I listed above.
Homer J. Simpson - 15 Feb 2006 15:09 GMT
> WinXP-specific newsgroup:
> news://msnews.microsoft.com/microsoft.public.windowsxp.general

And this is a Vista-specific newsgroup, in which somebody posted a message
reporting (arguably what seems to be) a bug that was first seen in XP and is
still apparently there in Vista.

I was inquiring whether another bug I'm currently seeing in XP is also still
present in Vista.  I wasn't requesting help to fix it (in which case you'd
be absolutely right to redirect me to an XP group).

If long-standing Shell Bug X in OS A is still present in OS A+1, why is it
unreasonable for me to ask others to verify whether also-long-standing Shell
Bug Y is also still in OS A+1?

My second post simply elaborated on what I'm currently seeing, as other
posters didn't seem to be aware of what I was talking about.  If everybody
can first agree on the presence of the bug in XP, then it has better chances
of being noticed in Vista if it's still there.  Otherwise nobody would know
what to look for.

I'd be even more off-topic asking about this in the newsgroup you proposed.

If you think I'm straying way off-topic, then we'll have to disagree.
 
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