Re: SSL problems

["Mark Harrison \(Yahoo!\)" <mph@xxxxxxxxxxxxxxx>]

If it peaks at 411 and then comes back down a second later, that's fine,
and
we need to look elsewhere for the problem.

If it goes up to 411 and then hangs around there for 10 seconds or more,
then it means you really need more RAM. I have to admit that I seldom
specify a server with less than a Gb of RAM these days.

The good news about fitting RAM is that your PC may just have spare RAM
slots into which you can add stuff (ie - it's not like a CPU upgrade where
you have to throw away the old one). The bad news is that if you're already
at 512Mb, then all the RAM slots may be full :-(

If fitting more RAM isn't an option, then there may be another possibility
to tweak performance, but it is more a tweak than a step change - I'd
suggest that it was time to have a look at your storage strategy. General
rule is to keep "random storage" on a separate volume to
"sequential
storage"... which is to say, set up Exchange so that it stores its
logs on a
separate drive to where it stores the user data.


I'm not sure how big your installation is. If it's just a family server,
then you can ignore the following, which is about reliability and load
sharing... Once you start getting lots of users, though, read on: be aware
that OWA is still a bit monolithic - if it crashes, and is running on the
same server as Exchange, then you can get into the situation where you need
to reboot the whole Exchange server! This really annoys MAPI (Outlook, etc)
client users who lose their access for the period of the reboot for the
sake
of a few OWA users. Hence, best practice is to put OWA on a separate
server.
(Hell, for big clients, I move the SSL handling out onto a reverse proxy
and
have that reverse proxy bridgehead the SSL, so the OWA server doesn't have
to crunch certificates.)


Regards,

Mark

----- Original Message -----
From: "aashram" <groups@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Wednesday, May 12, 2004 6:08 PM
Subject: RE: [ukha_d] SSL problems


> Processor time is about 10-25% max
> But the page/sec can go up 411
> What does that mean ?
>
> -----Original Message-----
> From: Mark Harrison (Yahoo!) [mailto:mph@xxxxxxx]
> Sent: 12 May 2004 16:37
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] SSL problems
>
> Aashram,
>
> Can you run perfmon on the server, and add some suitable things to
log:
>
> Processor - % processor time
> Memory - pages/sec
>
> Log for a while, then start running your OWA client and see whether
the
> server logs start changing wildly...
>
> Mark
>
>
>
>
>
> ----- Original Message -----
> From: "aashram" <groups@xxxxxxx>
> To: <ukha_d@xxxxxxx>
> Sent: Wednesday, May 12, 2004 3:32 PM
> Subject: RE: [ukha_d] SSL problems
>
>
> > Mark,
> >
> > I have Exchange 2003 and yes owa is on the same server as the
exhange
> server
> >
> > Swap space ? do you mean virtual memory ? Virtual memory is 2.5
times
> my
> physical memory
> > which is 512mb
> >
> > ________________________________
> >
> > From: Mark Harrison (Yahoo!) [mailto:mph@xxxxxxx]
> > Sent: Wed 12/05/2004 15:11
> > To: ukha_d@xxxxxxx
> > Subject: Re: [ukha_d] SSL problems
> >
> >
> >
> > As ever, more questions....
> >
> >
> > Which version of Exchange?
> >
> > Is OWA running on the same physical server as the Exchange
server?
> >
> > How much swap space have you got allocated?
> >
> >
> > I doubt it's SSL for the reason that it starts OK... and the
complex
> bits
> of
> > an SSL transaction are the session establishment. Once the
session is
> set
> up
> > and key exchange has taken place, there's a lot less processing
to do
> to
> > keep it working.
> >
> > Mark
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "aashram" <groups@xxxxxxx>
> > To: <ukha_d@xxxxxxx>
> > Sent: Wednesday, May 12, 2004 3:03 PM
> > Subject: [ukha_d] SSL problems
> >
> >
> > > I have ssl working on my mail server machine (exchange) when
> downloading
> > attachements files using the web (owa) it stops downloading after
> about a
> > minute or so (the attachment is 4mb)
> > >
> > > I am using a PIII with 512mb - is using ssl on this machine
too much
> for
> > it or does the problems ly somewhere else ?
> > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > >
> > >
> > > UK Home Automation Meet 2004 - THIS WEEK!
> > > http://www.ukha2004.com
> > >
> > > http://www.automatedhome.co.uk
> > >
> > > Member Offers - http://www.freeranger.co.uk/ukha
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
> > UK Home Automation Meet 2004 - THIS WEEK!
> > http://www.ukha2004.com
> >
> > http://www.automatedhome.co.uk
> >
> > Member Offers - http://www.freeranger.co.uk/ukha
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> >
> > UK Home Automation Meet 2004 - THIS WEEK!
> > http://www.ukha2004.com
> >
> > http://www.automatedhome.co.uk
> >
> > Member Offers - http://www.freeranger.co.uk/ukha
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>
>
>
> UK Home Automation Meet 2004 - THIS WEEK!
> http://www.ukha2004.com
>
> http://www.automatedhome.co.uk
>
> Member Offers - http://www.freeranger.co.uk/ukha
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
>
>
>
>
> UK Home Automation Meet 2004 - THIS WEEK!
> http://www.ukha2004.com
>
> http://www.automatedhome.co.uk
>
> Member Offers - http://www.freeranger.co.uk/ukha
> Yahoo! Groups Links
>
>
>
>
>
>
>