From owner-freebsd-current Sun Apr 5 19:51:09 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id TAA04393 for freebsd-current-outgoing; Sun, 5 Apr 1998 19:51:09 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from slip-3 (mail@slip-3.slip.net [207.171.193.17]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id TAA04372 for ; Sun, 5 Apr 1998 19:51:04 -0700 (PDT) (envelope-from thomma@slip.net) Received: from thomma by slip-3 with local (Exim 1.62 #4) id 0yM1zh-0006HN-00; Sun, 5 Apr 1998 19:50:45 -0700 Subject: disk performance difference To: freebsd-current@FreeBSD.ORG Date: Sun, 5 Apr 1998 19:50:44 -0700 (PDT) X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Message-Id: From: Tamiji Homma Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hi, I am not a -current but SNAP CD user. I noticed something interesting, that 19971006-SNAP disk performance is much greater than 19980222-SNAP specially on my SCSI disk according to what Bonnie's says. In fact, SCSI disk performance is very poor... However, if I compare 'make buildworld' of 19980222-SNAP source using two different kernels(the same everything but kernel), I get: 19980222-SNAP: 3315.51 real 2313.34 user 599.32 sys 19971006-SNAP: 3370.48 real 2328.91 user 633.53 sys The 'make buildworld' is done under following conditions: /usr/src on wd0 /usr/obj on ccd0 (/dev/sd0c /dev/sd1c) NOPROFILE, NOCLEAN, NOTCL, -pipe, async,noatime I don't see much difference (actually faster on newer SNAP, which is good:) between two SNAPs when I do make buildworld. Can anybody elaborate why? Here is Bonnie's result on my system: -------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU wd0-98 100 7606 75.3 3325 11.2 2513 15.5 9722 81.9 9872 24.2 162.9 3.3 wd0-97 100 7852 83.1 4507 17.0 2134 16.7 9773 93.7 9804 35.0 160.9 4.4 wd2-98 100 9326 94.4 8837 32.2 4193 20.4 10137 94.1 11244 33.5 148.4 3.2 wd2-97 100 8926 95.9 10799 44.5 3158 23.4 9014 93.4 11279 47.9 153.3 4.2 sd0c-98 100 2078 16.8 1503 3.6 1823 6.7 5133 41.6 5160 12.8 154.3 3.0 sd0c-97 100 6209 53.8 6295 18.4 2998 13.5 6237 50.6 6282 15.4 174.6 4.7 sd1c-98 100 2039 16.4 1489 3.5 1795 6.6 5094 40.7 5117 12.8 159.5 3.1 sd1c-97 100 5993 51.4 6110 17.8 2921 13.2 6060 49.2 6071 15.2 182.4 4.9 ccd0-98 100 2142 17.4 2030 5.0 1367 5.4 5136 42.1 5149 13.5 243.6 5.1 ccd0-97 100 9374 84.6 9801 31.8 3914 19.9 8515 71.6 8641 23.8 261.4 7.2 98: 19980222-SNAP kernel 97: 19971006-SNAP kernel CPU: AMD-K6tm w/ multimedia extensions (262.50-MHz 586-class CPU) Origin = "AuthenticAMD" Id = 0x562 Stepping=2 Features=0x8001bf real memory = 67108864 (65536K bytes) avail memory = 62513152 (61048K bytes) Probing for devices on PCI bus 0: chip0: rev 0x03 on pci0.0.0 chip1: rev 0x25 on pci0.7.0 ide_pci0: rev 0x06 on pci0.7.1 wdc0 at 0x1f0-0x1f7 irq 14 flags 0xa0ffa0ff on isa wdc0: unit 0 (wd0): , DMA, 32-bit, multi-block-16 wd0: 6197MB (12692736 sectors), 12592 cyls, 16 heads, 63 S/T, 512 B/S wdc1 at 0x170-0x177 irq 15 flags 0xa0ffa0ff on isa wdc1: unit 0 (wd2): , DMA, 32-bit, multi-block-16 wd2: 6149MB (12594960 sectors), 13328 cyls, 15 heads, 63 S/T, 512 B/S ... ncr0: rev 0x03 int a irq 11 on pci0.8.0 ncr0: waiting for scsi devices to settle scbus0 at ncr0 bus 0 sd0 at scbus0 target 0 lun 0 sd0: type 0 fixed SCSI 2 sd0: Direct-Access sd0: WIDE SCSI (16 bit) enabled sd0: 20.0 MB/s (100 ns, offset 15) 2048MB (4194304 512 byte sectors) sd1 at scbus0 target 1 lun 0 sd1: type 0 fixed SCSI 2 sd1: Direct-Access sd1: WIDE SCSI (16 bit) enabled sd1: 20.0 MB/s (100 ns, offset 15) 2048MB (4194304 512 byte sectors) Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/wd0a 31743 17319 11885 59% / /dev/wd0s1f 5737885 1358996 3919859 26% /usr (used for bonnie) /dev/wd0s1e 127023 1440 115422 1% /var /dev/wd2a 31743 15785 13419 54% /w/root /dev/wd2e 127023 1201 115661 1% /w/var /dev/wd2f 5690005 1563145 3671660 30% /w/usr (used for bonnie) procfs 4 4 0 100% /proc /dev/sd0c 2032623 1 1870013 0% /u1 (used for bonnie) /dev/sd1c 2032623 1 1870013 0% /u2 (used for bonnie) Thanks Tammy To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message