RE: Strange performance
- From: "josephk" <josephk@xxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Fri, 21 Jan 2005 11:39:18 -0800
Hi Darko,
I run back to back networks with ISA and don't' have the slowness problem. I do
sometimes receive pages that are garbled and look like binary representations
of the pages and or items that I was trying to download.
After I refresh my page that disappears. Not sure if this is related to
caching on ISA or not. The other issue is how the front end ISA is using DNS
to get pages or to your backend ISA. And then again from your backend ISA out
to the front-end ISA and external network. Thomas showed me this link which
helped on speed
http://www.microsoft.com/technet/prodtechnol/isa/2004/plan/disablenameresolution.mspx
and DNS resolution.
Thank you,
Joseph
_____
From: Ball, Dan [mailto:DBall@xxxxxxxxxxx]
Sent: Friday, January 21, 2005 10:41 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Strange performance
http://www.ISAserver.org
I don't know why this happens, but I have seen it happen here. In fact, I had
an open support case with Microsoft at the time about this, and sent them
diagnostic logs while it was happening, which they are still perusing.
_____
From: Darko Kljajic [mailto:darko@xxxxxxxxxxxxxxxx]
Sent: Friday, January 21, 2005 12:42
To: [ISAserver.org Discussion List]
Subject: [isalist] Strange performance
http://www.ISAserver.org
Hi to all,
I have installed four ISA Servers 2004 in back to back configuration. (test
prepare to go live)
I have two downstream isa servers with NIC Teming for every network and NLB
only for Internal network (caching servers) + two upstream isa servers also
with NLB and Teaming.
Everything works fine (almost perfectly) ... until ISAs suddenly get lazy. ISAs
retrive sites so slowly that everyone start to complain.
I look up in router log (router to internet provider) and I saw that our link
have always spare 100 kbytes/s. So I supposed that network bandwidth isn't a
problem. I also look in ISAs performance counters and everything looks fine
(COLD).
I do all the tuning for operating systems (3GB switch ...) and I give
downstream ISAs to use 50% of memery for caching.
Does anyone have a clue what is happening??
Hardware configuration (4 servers):
2 x 3.06GHz
4GB RAM
256 MB SCSI Controler
3 x 36GB Hard Disks
4 (6) NIC
PS: NLB works with Layer3 Switch
Darko Kljajić
Administrator for operating systems
IT Department
tel: +381 11 201 1567
mob: +381 64 811 1655
e-mail: darko@xxxxxxxxxxxxxxxx <mailto:darko@xxxxxxxxxxxxxxxx>
===========================
Delta Banka A.D.
Milentija Popovića 7b, Belgrade
Serbia & Montenegro
site: www.deltabanka.co.yu <http://www.deltabanka.co.yu/>
===========================
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