RE: New Kernel with Dell PE2950

2008-06-04 Thread Catalin Miclaus
-Original Message-
From: D Hill [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, June 04, 2008 7:06 PM
To: Catalin Miclaus
Cc: FreeBSD-Questions
Subject: RE: New Kernel with Dell PE2950

On Wed, 4 Jun 2008 at 18:44 +0100, [EMAIL PROTECTED] confabulated:

> BTWbce/bge drivers has known issues that leads to 'watchdog
timeout'
> NIC reset.
> I have same some 6-8 servers with your hardware configuration and we
> have ordered them with Intel Gigabit cards especially to avoid above
> issue.
> Use bce/bge NICs for low traffic interfaces if possible.

How can I see what you are referring to with the bge interfaces? We have
a 
PE6850 that has two bge interfaces. The server's roll is a spam filter 
server and processes close to 6.5 million messages per day.

However, I don't have the watchdog daemon running.




I don't remember exactly at which bandwidth consumption level the
watchdog timeout error starts appearing. Somewhere below 100Mbps.

You can see it if you enable the server to e-mail you the default daily
security report or from /var/log/messages file.

Jan  4 08:46:00 lb1 kernel: bge1: watchdog timeout -- resetting
Jan  4 08:46:00 lb1 kernel: bge1: link state changed to DOWN
Jan  4 08:46:02 lb1 kernel: bge1: link state changed to UP

BTWwatchdog is a kernel facility and it is enabled by default.
You can run a separate process if you want to control it (man watchdog).






Best Regards
Catalin Miclaus
Network/Security ISP-Data
Starcomms Ltd.
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RE: New Kernel with Dell PE2950

2008-06-04 Thread D Hill

On Wed, 4 Jun 2008 at 18:44 +0100, [EMAIL PROTECTED] confabulated:


BTWbce/bge drivers has known issues that leads to 'watchdog timeout'
NIC reset.
I have same some 6-8 servers with your hardware configuration and we
have ordered them with Intel Gigabit cards especially to avoid above
issue.
Use bce/bge NICs for low traffic interfaces if possible.


How can I see what you are referring to with the bge interfaces? We have a 
PE6850 that has two bge interfaces. The server's roll is a spam filter 
server and processes close to 6.5 million messages per day.


However, I don't have the watchdog daemon running.
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RE: New Kernel with Dell PE2950

2008-06-04 Thread Catalin Miclaus
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of VeeJay
Sent: Wednesday, June 04, 2008 4:04 PM
To: FreeBSD-Questions; VeeJay
Subject: New Kernel with Dell PE2950

Hi guys

I am going to install a Web Server (apache+mysql+php) at my work place.
To
boost performance, I am just thinking that should I configure and
rebuild
FreeBSD KERNEL for this hardware? And if so, what paramters I should
follow?
Any help would be highly appreciated.
Server's hardware configuration is as follow:
 2  x  Quad Core Xeon E5450 3.0GHz,2x6MB,1333FSB
16GB (8x2GB Dual Rank DIMMs) 667MHz FBD
 6  x  450GB SAS 15k 3.5" HD Hot Plug
 PERC 6/i, Integrated Controller Card x6 backplane
 PE2950 III C5 MSS R10 Add-in PERC 5/i / 6/i 1 S
 TCP/IP Offload Engine 2P
 Broadcom TCP/IP Offload Engine functionality (TOE) Not Enabled

Thank you guys.
VJ

BR / vj



You should start by using some sort of benchmark or traffic generator
and trying to overload the server by reproducing your environment.
This way you will see exactly what parameters needs tuning.

Bottleneck can come from many thingsIO, NIC, database and so on.
It is not like you will apply some universal tuning that it will solve
all future issues.

BTWbce/bge drivers has known issues that leads to 'watchdog timeout'
NIC reset.
I have same some 6-8 servers with your hardware configuration and we
have ordered them with Intel Gigabit cards especially to avoid above
issue.
Use bce/bge NICs for low traffic interfaces if possible.

Is there any reason why GENERIC/SMP kernel does not suits you well?
What is your traffic expectation for the server?






Best Regards
Catalin Miclaus
Network/Security ISP-Data
Starcomms Ltd.



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