From owner-freebsd-isp Tue Jan 29 4:48: 0 2002 Delivered-To: freebsd-isp@freebsd.org Received: from psknet.com (voyager.psknet.com [63.171.251.15]) by hub.freebsd.org (Postfix) with SMTP id 2AE6837B421 for ; Tue, 29 Jan 2002 04:47:35 -0800 (PST) Received: (qmail 90360 invoked by uid 85); 29 Jan 2002 12:38:19 -0000 Received: from troy@psknet.com by voyager.psknet.com with qmail-scanner-1.02 (uvscan: v4.1.20/v4143. . Clean. Processed in 0.346095 secs); 29 Jan 2002 12:38:19 -0000 X-Qmail-Scanner-Mail-From: troy@psknet.com via voyager.psknet.com X-Qmail-Scanner-Rcpt-To: freebsd-isp@FreeBSD.ORG X-Qmail-Scanner: 1.02 (Clean. Processed in 0.346095 secs) Received: from abyss.dashit.net (HELO abyss) (63.171.251.250) by voyager.psknet.com with SMTP; 29 Jan 2002 12:38:18 -0000 From: "Troy Settle" To: Subject: RE: Tuning a system... Date: Tue, 29 Jan 2002 07:47:33 -0500 Message-ID: <000301c1a8c3$1effe360$fafbab3f@psknet.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2616 In-Reply-To: <200201291042.g0TAgIs03880@Magelan.Leidinger.net> Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Thanks to all for your input. It'll probably take me a month to get my machines updated though. -- Troy Settle Pulaski Networks 540.994.4254 - 866.477.5638 http://www.psknet.com > -----Original Message----- > From: owner-freebsd-isp@FreeBSD.ORG > [mailto:owner-freebsd-isp@FreeBSD.ORG] On Behalf Of Alexander > Leidinger > Sent: Tuesday, January 29, 2002 5:42 AM > To: forrestc@imach.com > Cc: absinthe@pobox.com; troy@psknet.com; freebsd-isp@FreeBSD.ORG > Subject: Re: Tuning a system... > > > On 29 Jan, Forrest W. Christian wrote: > > >> I'm of the school of thought that says you're likely to > spend a lot more time > >> making kernel adjustments, compiling and rebooting than > you ever would trying > >> to reason with a dynamic kernel or deal with memory > shortages, especially > >> with as cheap as RAM is now. > > > > I'll add my $0.02: > > > > About the only thing which I have run across which I > regularly run into > > problems with are TCP/IP buffer parameters such as mbufs. > If I tune my > > kernel so I can get insane flows across the internet > (DS-3/OC-3 level > > links), I will quickly run out of buffers if I get more > than a couple of > > flows going. > > > > I would *love* to see these dynamically sized - the buffer > space, not > > necessarily the tcp/ip tuning parameters. > > -current (and perhaps 4.5) do something like this already at boot time > depending on the amount of memory (you have to set maxusers > to 0 to get > this behavior). It's not dynamic at run time, it's only > dynamic at boot > time. And if it doesn't allocate enough for you, you can override it > with your own settings. > > Bye, > Alexander. > > -- > Loose bits sink chips. > http://www.Leidinger.net Alexander @ Leidinger.net GPG fingerprint = C518 BC70 E67F 143F BE91 3365 79E2 9C60 B006 3FE7 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message