From owner-freebsd-hackers Tue Jan 10 04:01:24 1995 Return-Path: hackers-owner Received: (from root@localhost) by freefall.cdrom.com (8.6.9/8.6.6) id EAA10398 for hackers-outgoing; Tue, 10 Jan 1995 04:01:24 -0800 Received: from titan.np.ac.sg (lsys@titan.np.ac.sg [153.20.24.72]) by freefall.cdrom.com (8.6.9/8.6.6) with SMTP id EAA10332 for ; Tue, 10 Jan 1995 04:01:03 -0800 Message-Id: <199501101201.EAA10332@freefall.cdrom.com> Subject: Filesystem(?) preformance - 1.x and 2.0 To: hackers@FreeBSD.org Date: Tue, 10 Jan 1995 19:58:21 +0800 (SST) From: SysAdmin - Ng Pheng Siong Cc: lsys@np.ac.sg (SysAdmin) X-Mailer: ELM [version 2.4 PL21] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII Content-Length: 1770 Sender: hackers-owner@FreeBSD.org Precedence: bulk Hi. Didn't see any response to a previous post, so I'll try again. Hopefully someone can clue me in. I have 1.x unpatched-final-current and 2.0R (2.1.0 kernel supped on 4th/5th Dec) running on identical hardware alongside each other. Somehow, the 2.0 system feels slower. Iozone reports thusly: == 2.0 == Writing the 10 Megabyte file, 'iozone.tmp'...27.835938 seconds Reading the file...20.015625 seconds IOZONE performance measurements: 376698 bytes/second for writing the file 523878 bytes/second for reading the file == 1.x == Writing the 10 Megabyte file, 'iozone.tmp'...25.150000 seconds Reading the file...43.716667 seconds IOZONE performance measurements: 416928 bytes/second for writing the file 239857 bytes/second for reading the file Kdumping `ktrace -d -i man logger' gives: == 2.0 == 49.51 real 11.08 user 10.24 sys == 1.x == 34.92 real 3.06 user 4.10 sys Redirecting output of kdump (`time kdump >/dev/null'): == 2.0 == 9.90 real 9.54 user 0.21 sys == 1.x == 2.02 real 1.92 user 0.10 sys Timing `man csh': == 2.0 == 238.78 real 204.62 user 29.36 sys == 1.x == 66.37 real 53.04 user 10.39 sys Both machines have lean kernels, differences are that the 2.0 one has LKM, MULTICAST and MROUTING. Both are under my charge and have nothing much running on them. The 2.0 box took over Sendmail duties from the 1.x box yesterday, and is also intended to be our site's mrouter to the Mbone. Appreciate any hints on where to start looking. Thanx! - PS -- Ng Pheng Siong * lsys@np.ac.sg * ngps@np.ac.sg Computer Centre, Ngee Ann Polytechnic, Singapore