From owner-freebsd-hackers Mon Mar 31 22:23:01 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id WAA13240 for hackers-outgoing; Mon, 31 Mar 1997 22:23:01 -0800 (PST) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id WAA13220 for ; Mon, 31 Mar 1997 22:22:56 -0800 (PST) Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id IAA23236 for hackers@freebsd.org; Tue, 1 Apr 1997 08:21:39 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.8.5/8.8.5) id IAA14576; Tue, 1 Apr 1997 08:17:33 +0200 (MET DST) Message-ID: <19970401081733.BQ30598@uriah.heep.sax.de> Date: Tue, 1 Apr 1997 08:17:33 +0200 From: j@uriah.heep.sax.de (J Wunsch) To: hackers@freebsd.org Subject: Re: 2.2R real slow with 8 meg References: <3.0.32.19970331185559.00b6b100@etinc.com> X-Mailer: Mutt 0.60_p2-3,5,8-9 Mime-Version: 1.0 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <3.0.32.19970331185559.00b6b100@etinc.com>; from dennis on Mar 31, 1997 18:56:02 -0500 Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As dennis wrote: > >Your experience is surprising. A friend of mine recently changed to > >3.0-some-time-ago-almost-2.2, from a 2.1R system. He reported me that > >the system now feels faster, this is with 8 MB RAM and X11. > Hmmm...is more swap required, or maybe the generic kernel has > more pithy settings than before...I haven't really examined it yet? > > Maybe its the IDE driver? Ah, that might be the culprit. No, not really the driver, but it's quite possible that 2.2 is more aggressively paging than 2.1 did. With a PIO-only disk subsystem, it's imaginable that this results in a loss of performance. With a decent (busmaster DMA) disk subsystem, it results in a gain of performance however since there's always RAM available when needed. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)