slow performance - weird behaviour
From: Andrei G (AndreiG_at_discussions.microsoft.com)
Date: 12/28/04
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Date: Mon, 27 Dec 2004 17:51:01 -0800
machine - PIII 800 / 512 MB
2 NICs
internet pipe: 10 Mbps down / 1 Mbps up
DHCP IP and DNS on internet NIC
static IP no GW on LAN NIC, DNS same as IP
ISA 2004 on win srv 2003
15-20 web proxy users
DNS server cached on ISA machine;
forwards on LAN DNS servers to ISA machine;
Cache enabled. Cache active objects -> normally
Logging enabled.
This is what is happening .
Max download speed varies or is much under the max values.
If I connect a laptop or a desktop to the cable modem then the download
speed is up to max (8-9 Mbps).
On the ISA machine (IE on direct connection) or LAN users the download speed
is half or even one third.
I changed several time the NICs (both). Same result.
What I noticed.
If I'm using a download accelerator on any of the workstations behind ISA
then download speed is almost the expected one (7-9 Mbps). Without this,
using only IE or any other browser the download speed is considerably lower.
Very seldom the speed is maximum for all the machines by itself (no change)
or if I change manually the default DNS server (that one obtained dynamically
from the ISP). It works fine only for a short period of time. The speed on
that specific download session is kept fine up to the end of the file.
Somebody has mentioned something about the HW. There is no error in event
viewer and everything seems to work fine. Do I have to change the machine?
Any advice would be highly appreciated.
Thank you.
Andrei
- Previous message: Andrew Baker: "Re: ISA testing with dynamic ip"
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