netdev
[Top] [All Lists]

Re: Route cache performance under stress

To: ralph+d@xxxxxxxxx
Subject: Re: Route cache performance under stress
From: Ben Greear <greearb@xxxxxxxxxxxxxxx>
Date: Tue, 10 Jun 2003 11:21:50 -0700
Cc: "'netdev@xxxxxxxxxxx'" <netdev@xxxxxxxxxxx>
In-reply-to: <Pine.LNX.4.51.0306101402350.16454@xxxxxxxxxxxx>
Organization: Candela Technologies
References: <008001c32eda$56760830$4a00000a@badass> <20030609195652.E35696@xxxxxxxxxxxxxxxx> <Pine.LNX.4.51.0306092006420.12038@xxxxxxxxxxxx> <20030609204257.L35799@xxxxxxxxxxxxxxxx> <Pine.LNX.4.51.0306092200150.28167@xxxxxxxxxxxx> <3EE54F4D.50909@xxxxxxxxxxxxxxx> <Pine.LNX.4.51.0306101402350.16454@xxxxxxxxxxxx>
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030529
Ralph Doncaster wrote:
On Mon, 9 Jun 2003, Ben Greear wrote:


One waring about e1000's, make sure you have active airflow across the NICs
if you put two together.  Otherwise, buy a dual port NIC...it has a single
chip and you will have less cooling issues.


I just took a closer look at my e1000's.  They've got a small RC82540EM
bga chip on them, manufactured 25th week of '02. If these things do get
hot enough to cause problems why wouldn't Intel have them manufactured
with heatsinks attached?

Dunno...  I wish they had.  My machine had fairly bad cooling (2U, open case). 
However, when
I put a fan on them, no reboots, whereas before I could crash the machine
with nasty memory corruption after about 1 hour of sustained > 100Mbps
bi-directional traffic.

The temp probe I used showed them to be at about their operating
max, though I forget what that was now...

Maybe your chipset or cooling is better and you won't hit it..but if you do
see crashes, try a fan :)

Ben


-Ralph



--
Ben Greear <greearb@xxxxxxxxxxxxxxx>       <Ben_Greear AT excite.com>
President of Candela Technologies Inc      http://www.candelatech.com
ScryMUD:  http://scry.wanfear.com     http://scry.wanfear.com/~greear



<Prev in Thread] Current Thread [Next in Thread>