From owner-freebsd-stable Thu Apr 16 12:04:47 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id MAA10922 for freebsd-stable-outgoing; Thu, 16 Apr 1998 12:04:47 -0700 (PDT) (envelope-from owner-freebsd-stable@FreeBSD.ORG) Received: from xmission.xmission.com (softweyr@xmission.xmission.com [198.60.22.2]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id TAA10901 for ; Thu, 16 Apr 1998 19:04:35 GMT (envelope-from softweyr@xmission.xmission.com) Received: (from softweyr@localhost) by xmission.xmission.com (8.8.8/8.7.5) id NAA25961; Thu, 16 Apr 1998 13:04:25 -0600 (MDT) From: Wes Peters - Softweyr LLC Message-Id: <199804161904.NAA25961@xmission.xmission.com> Subject: Re: Linux And FreeBSD To: lrios@ziplink.net (lrios) Date: Thu, 16 Apr 1998 13:04:24 -0600 (MDT) Cc: stable@FreeBSD.ORG In-Reply-To: from "lrios" at Apr 16, 98 02:49:28 pm X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk lrios@ziplink.net asked: > Could someone please explain to me why a Linux 75 mhz machine kicks the > hell out of a FreeBSD with a Pentium II 266mhz 256M Ram and two ultra-wide > fast SCSI drives??? > > I love BSD but for performance reasons linux may be my choice. > > Any performance tips would be helpful... > > My linux machine puts out about 700 (locally)emails a minute while BSD > only puts > out about 200... my limits appear to configured properly. My kernel > options have been set.. Is there anything that I'm missing to get this > machine to work??? The only difference between the two is that the Linux > Box is working like a dog while the BSD box doesn't go above .05 load and > stays around 90 idle Mount your mail spool async and you'll makeup the difference. The linux filesystem does this by default. Not a great idea in the face of system crashes; async mounts tend to leave the disk scrambled beyond repair, but if Linux does it for you, FreeBSD with async is no worse. > What are the differences in memory managers between the two?? > I've got a consultant here trying to get linux to do everything but with > the numbers I'm seeing it's hard to stay loyal.. Please help!! Why would the memory managers have anything to do with an I/O bound process like email? -- "Where am I, and what am I doing in this handbasket?" Wes Peters Softweyr LLC http://www.softweyr.com/~softweyr softweyr@xmission.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message