From owner-freebsd-isp Wed Sep 18 16:31:28 1996 Return-Path: owner-isp Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id QAA26748 for isp-outgoing; Wed, 18 Sep 1996 16:31:28 -0700 (PDT) Received: from login.bigblue.no (root@login.bigblue.no [194.19.68.12]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id QAA26701 for ; Wed, 18 Sep 1996 16:31:24 -0700 (PDT) Received: from eagle.bigblue.no (froden@eagle.bigblue.no [194.19.68.13]) by login.bigblue.no (8.6.12/8.6.12) with SMTP id BAA26853; Thu, 19 Sep 1996 01:27:45 +0200 Message-Id: <199609182327.BAA26853@login.bigblue.no> From: "Frode Nordahl" To: "Joe Greco" Cc: "isp@FreeBSD.org" Date: Thu, 19 Sep 96 00:37:11 +0100 Reply-To: "Frode Nordahl" Priority: Normal X-Mailer: Frode Nordahl's Registered PMMail 1.52 For OS/2 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Subject: Re: News server... Sender: owner-isp@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk On Wed, 18 Sep 1996 14:47:20 -0500 (CDT), Joe Greco wrote: >> Machine: >> P/133 >> 64MB ram (Soon to be 128 MB) > >More RAM, definitely. :-) Thought you would say that :-)) >> 4x Quantum Empire (2GB) >> 1x Quantum Fireball (500MB) >> >> Disk configuration >> 1x Quantum Empire - root device >> 3x Quantum Empire striped with ccd (Ileave: 16 = 8kb) for /var/spool/news > >Too small an interleave. You want each drive to be able to complete a >transaction on its own... and I am not talking about a single read, >I mean (minimally) the terminal directory traversal and file read for the >article in question. You do not want two or three drives participating >in this operation. Search the mailing list archives, I am tired of >explaining it. Ok... >I use an interleave size equal to the number of blocks in a >_CYLINDER_GROUP_. That is a BIG number. 32MB in this case. But that wil not help on performance, or would it? The optimum stripe size for RAID in hardware is 8kb... >> 1x Quantum Fireball - /usr/lib/news (News configuration to avoid excessive I/O on the root dev.) > >Good idea. Yeah.. Since this computer is going to do other stuff than news too, slowing down the root device with I/O is not a smart idea.. :) >> The disks are connected to two Adaptec 7850 controllers. the news related disks alone on the second >> adaptec and the root dev on the first. > >So you have one "underutilized" SCSI bus... the first one. Spread the disks >out between the busses. Ok... >> Does this look like a reasonable setup? This news server does not handle any feeds (Except for the incoming >> feed from our provider). Only client access. (For now). > >How many simultaneous clients do you expect to be able to handle? The maximum peak we expect (For now) is 16*3 clients (16 clients using 3 connections each). >How long do you keep news? We keep news for 5 days except for alt.binaries.* that we keep for 3 days maximum. Thanks for the info! --------------------------------- Frode Nordahl