O/S hooks question

[Thong Nguyen]

Well, under Win9x, it uses DDIHooks I think, not particularly good speed,
but more accurate than WinVNC.  You can definitely tell you're using a
terminal (unlike when using NT).


-
Thong (Tum) Nguyen
http://www.veridicus.com
-

> -----Original Message-----
> From: owner-vnc-list "at" uk.research.att.com
> [mailto:owner-vnc-list "at" uk.research.att.com]On Behalf Of Dewar Charles
> Sent: Saturday, 5 February 2000 3:08 a.m.
> To: 'vnc-list "at" uk.research.att.com'
> Subject: RE: O/S hooks question
>
>
> What do you think of it under Windows 9x? Is it any faster than VNC
> considering it cannot load the "shim" as described below?
>
> -----Original Message-----
> From: Thong Nguyen [mailto:thongnguyen "at" mail.com]
> Sent: Friday, February 04, 2000 6:21 AM
> To: vnc-list "at" uk.research.att.com
> Subject: RE: O/S hooks question
>
>
> If you're talking about Radmin, I found it's speed impressive,
> basically you
> couldn't tell you were using a computer remotely.  I found it even faster
> than XVnc.  It's a pity he didn't choose to share his work with
> VNC, but oh
> well :).
> I've tried Windows Terminal Services over the internet (slow 28.8k)
> connection and it's highly impressive.  Extremely fast, and very
> usable (as
> in you could realistically do your work) over 28.8k.  Microsoft
> seem to use
> a heck of a lot of caching, so if you scroll a page down and up
> for example,
> it's really fast.  Opening up common menus etc more than once seems to
> improve speed.
> Anyone have any caching ideas? ;)
>
> -
> Thong (Tum) Nguyen
> http://www.veridicus.com
> -
>
>
> > -----Original Message-----
> > From: owner-vnc-list "at" uk.research.att.com
> > [mailto:owner-vnc-list "at" uk.research.att.com]On Behalf Of John Wilson
> > Sent: Saturday, 5 February 2000 12:44 a.m.
> > To: vnc-list "at" uk.research.att.com
> > Subject: Re: O/S hooks question
> >
> >
> >
> > ----- Original Message -----
> > From: Arnt Witteveen <Arnt.Witteveen "at" vartec.be>
> > To: <vnc-list "at" uk.research.att.com>
> > Sent: 04 February 2000 11:14
> > Subject: RE: O/S hooks question
> >
> >
> > > > messages (especially multithreaded apps).  There are existing
> > > > mechanisms in
> > > > windows to hook everything like DDIHooks etc, which are still
> > > > being worked on :).
> > >
> > > I've always wondered, anyone know how some other apps, like
> the russian
> > one
> > > I've seen announced here a while ago succeed in doing things
> > much quicker?
> >
> > There was some dispute as to the actual speed improvement that
> > the "Russian
> > app" delivered in practice. I believe that it works by placing a
> > shim driver
> > between NT and the actual display driver. This would allow it to gather
> > details as to the areas of the frame buffer being changed far
> > more precisely
> > than VNC. The downside to this is that you are putting a piece of third
> > party software deep into the guts of your OS. Considering the
> mayhem that
> > graphics divers can cause on NT systems on their own I would
> never install
> > this software on a mission critical system. The major advantage
> > to me of VNC
> > is that it is minimally intrusive and I can read the code and
> > assure clients
> > that it will not trash their servers. For my purposes (remote
> > monitoring of
> > systems) this advantage vastly outweighs any performance
> issues. YMMV, of
> > course.
> >
> > John Wilson
> > The Wilson Partnership
> > 5 Market Hill, Whitchurch, Aylesbury, Bucks HP22 4JB, UK
> > +44 1296 641072, +44 976 611010(mobile), +44 1296 641874(fax)
> > Mailto: tug "at" wilson.co.uk
> >
> >
> >
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