Date: Thu, 19 Sep 96 00:37:11 +0100 From: "Frode Nordahl" <froden@bigblue.no> To: "Joe Greco" <jgreco@brasil.moneng.mei.com> Cc: "isp@FreeBSD.org" <isp@FreeBSD.org> Subject: Re: News server... Message-ID: <199609182327.BAA26853@login.bigblue.no>
next in thread | raw e-mail | index | archive | help
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 <froden@bigblue.no>
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199609182327.BAA26853>