----- Original Message -----
Sent: Friday, December 21, 2001 08:41
Subject: RE: 100% CPU when Synch
Ok
I had to recreate his
mailbox
Everything seemed fine after that until
after I restored his calendar.. Now its going 100% when it syncs the
calender, or when you access the calender
-----Original Message-----
From:
David N. Precht [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 5:40 PM
To: MS-Exchange Admin Issues
Subject: Re: 100% CPU when Synch
Don't forget : http://support.microsoft.com/default.aspx?scid=kb;EN-US;q239938
http://support.microsoft.com/default.aspx?scid=kb;EN-US;q247674
----- Original Message -----
From:
"Keith Nelson" <[EMAIL PROTECTED]>
To:
"MS-Exchange Admin Issues"
<[EMAIL PROTECTED]>
Sent: Wednesday, December 19, 2001 18:26
Subject: RE: 100% CPU when Synch
Michael,
So far no one has suggested this on the list so I think I
will. Maybe the install of outlook is corrupted (its probably a longshot).
You might want to try to uninstall Outlook/Office and the reinstall
it.
Keith Nelson
Network
Administrator
Orange County High School of the
Arts
[EMAIL PROTECTED]
(714) 560-0900 ex5910
-----Original Message-----
From:
Dillon, Jeff [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 3:19 PM
To: MS-Exchange Admin Issues
Subject: RE: 100% CPU when Synch
Preventing and not allowing are different indeed. And
I'll bet that your site doesn't disable local virus scanning just because
you block the POP ports.
-----Original Message-----
From:
Lefkovics, William [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 6:12 PM
To: MS-Exchange Admin Issues
Subject: RE:
100% CPU when Synch
>>"Not allowing" POP access doesn't prevent the user
from configuring it
anyway
If it doesn't, then you're preventing it wrong ;)
William Lefkovics, MCSE, A+
-----------------------------------------------------------
Why just ride, when you can fly?
http://www.airborne.net
-----------------------------------------------------------
Rent this space: [EMAIL PROTECTED]
-----Original Message-----
From:
Dillon, Jeff [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 3:13 PM
To: MS-Exchange Admin Issues
Subject: RE:
100% CPU when Synch
I believe we're all free to counter bad advice. And I
gave several suggestions, here and offline. I seriously doubt that
there is a single AV vendor who makes client- and server-end AV products who
says they shouldn't be used simultaneously. "Not allowing" POP access
doesn't prevent the user from configuring it anyway--it's quite easy.
Please don't get upset when you make a questionable blanket statement based
upon reasons you can't recall, and someone objects.
-----Original Message-----
From:
Benjamin Winzenz [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 4:56 PM
To: MS-Exchange Admin Issues
Subject: RE:
100% CPU when Synch
I'm not going to sit here and argue with you. I will
admit that I don't always present things in a matter which explains every
nit-picking detail. I do know that it was explained to me some time ago
exactly why we do not enable client-based Exchange AV here and while I can't
remember every single detail, I do know there were valid reasons presented
that stated why we would not employ this feature. I still pose the
question to you of have you spoken to your Exchange AV vendor and asked them
about having both server and client side scanning simultaneously? You
never answered me.
I don't know why you feel a burning desire to prove your
overwhelming knowledge about this subject, and try and prove that I don't
know what I am talking about - don't know if you noticed, but I'm not the
only one that suggested disabling antivirus on the client. Or were you
too busy thinking of a retort to my comments? I did notice that
disabling it had no effect. I also made some other suggestions, or didn't
you notice those either? I haven't seen any suggestions come out of your
mouth (or keyboard, as it were).
Your comment about a need for client-based Exchange AV is
relevant when dealing with non-Exchange POP3 access. I agree with
that. We don't allow POP access because of this, and other security
reasons. The MAPI scenario, while acknowledged to by MS, I have never
seen happen in a real-life scenario. Have you? We still use
MAPI-based scanning, and process a LOT of mail, and this scenario has never
happened to us. Then again, if you buy cheap AV software, you may be
more at risk. None of us here are too worried about it.
Ben Winzenz, MCSE
Network/Systems
Administrator
Peregrine Systems, Inc.
-----Original Message-----
From:
Dillon, Jeff [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 4:13 PM
To: MS-Exchange Admin Issues
Subject: RE: 100% CPU when Synch
The server and client don't "fight" for the messages--the
client tells the server to send a message, the server sends it (whether the
server first scans it or not is irrelevant) and the client then scans
it. The more CPU cycles spent scanning by the client, the less cycles
are available to request the next message, reducing the server load.
As you've seen from the follow-ups, disabling the local scanning has NO
effect on the pegged client CPU--there is something else afoot. Your
suggestion that scanning is unwanted at both the client and server level is
unwise on several counts, starting with the scenario where the client has
configured access to a non-Exchange POP server. And in the
MAPI-scanning scenario, MS acknowledges that a server under extreme load
puts higher priority on delivery than scanning, so unscanned messages can
reach the client. If there's nothing scanning at the client level,
you're in trouble, needlessly.
-----Original Message-----
From:
Benjamin Winzenz [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 1:26 PM
To: MS-Exchange Admin Issues
Subject: RE:
100% CPU when Synch
It doesn't reduce the overhead because the Exchange-based is
trying to scan every piece of mail before it gets to the client. In
the case of a synch, you are dumping massive amounts of e-mail to a local
.ost file. If you have both Exchange and client AV software fighting
to get to the same e-mails, guaranteed the Exchange side is going to win, at
the expense of the client. It could also depend on the type of AV that is on
the server, i.e. is it MAPI-based scanning, or AVAPI. I still don't
think I would recommend running Exchange AV on both the server and
client, if nothing else, than for the potential to cause problems.
Call your Exchange AV vendor and see what they say. You may just be
getting lucky.
Ben Winzenz, MCSE
Network/Systems
Administrator
Peregrine Systems, Inc.
-----Original Message-----
From:
Dillon, Jeff [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 1:18 PM
To: MS-Exchange Admin Issues
Cc:
'[EMAIL PROTECTED]'
Subject: FW: 100% CPU when
Synch
I'm not sure I buy this analysis...if a LOCAL virus-scanning
utility is scanning email hosted on an Exchange system that also has virus
software active, the ability of the client machine to request the next item
for synchronization is REDUCED by the local overhead of scanning the item.
If anything, the local scanning REDUCES the load on the Exchange server by
limiting the rate at which the clients can task the server.
We run local and server-based Exchange anti-virus software
simultaneously, and have seen none of the problems mentioned. I
suggest the problem lies elsewhere, and the original comment that "...a FEW
of these (clients) are pegging the CPU" is your clue.
-----Original Message-----
From:
Benjamin Winzenz [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 1:03 PM
To: MS-Exchange Admin Issues
Subject: RE:
100% CPU when Synch
If you have AV on your Exchange server as well, turn that
option off on the clients. Think of it this way. Your Exchange
AV program and your desktop AV (NAV-CE) are basically fighting to see who
gets to scan the e-mail. Whoever gets to it first locks it and the other one
can't get to it. Normally, the Exchange AV program will win. Hence,
you have problems on your desktops. Turn it off on the client side,
and I bet your problems will go away. It's understandable to want to
have it running - heck, our Security team wanted us to turn it on, until we
explained to them the hurt it could cause.
Ben Winzenz, MCSE
Network/Systems
Administrator
Peregrine Systems, Inc.
-----Original Message-----
From:
MHR(Michael Ross) [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 12:55 PM
To: MS-Exchange Admin Issues
Subject: RE:
100% CPU when Synch
Yes, with the Outloook\exchange option...
-----Original Message-----
From: Benjamin
Winzenz [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 11:55 AM
To: MS-Exchange Admin Issues
Subject: RE: 100% CPU when Synch
With the
Exchange/Outlook add-on or no?
Ben Winzenz, MCSE
Network/Systems
Administrator
Peregrine Systems, Inc.
-----Original Message-----
From:
MHR(Michael Ross) [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 12:50 PM
To: MS-Exchange Admin Issues
Subject: RE:
100% CPU when Synch
could be.. we are using NAV CE on all the clients...
-----Original Message-----
X-Sybari-Space: 00000000
00000000 00000000 00000000
From: Lefkovics, William
[mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 11:48 AM
To: MS-Exchange Admin Issues
Subject: RE: 100% CPU when Synch
Aunty
Virus?
William Lefkovics, MCSE, A+
-----------------------------------------------------------
Why just ride, when you can fly?
http://www.airborne.net
-----------------------------------------------------------
Rent this space: [EMAIL PROTECTED]
-----Original Message-----
From:
MHR(Michael Ross) [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 19, 2001 9:46 AM
To: MS-Exchange Admin Issues
Subject: 100%
CPU when Synch
I have alot Outlook 2000 SP2 clients
connecting to an Exchange 5.5 server. A few of these pc's are pegging the
CPU at 100% when you force a synchronization with the ost file. This also
happens whenever the client itself syncs up with the OST
file..
anyone have any ideas?
Michael Ross
Network Analyst
2
Panduit Corp.
[EMAIL PROTECTED]
If at first you don't
succeed, Skydiving isn't for you.
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