From owner-freebsd-questions Wed Feb 23 14:40:18 2000 Delivered-To: freebsd-questions@freebsd.org Received: from unix.megared.net.mx (megamail.megared.com.mx [207.249.162.252]) by hub.freebsd.org (Postfix) with ESMTP id 61AF137B9FA for ; Wed, 23 Feb 2000 14:40:00 -0800 (PST) (envelope-from ales@megared.net.mx) Received: from ales (ales2.megared.net.mx [207.249.163.241]) by unix.megared.net.mx (8.9.3/8.9.3) with SMTP id QAA76761; Wed, 23 Feb 2000 16:39:54 -0600 (CST) (envelope-from ales@megared.net.mx) Message-ID: <041001bf7e4e$e087ac80$020a0a0a@megared.net.mx> From: "Alejandro Ramirez" To: "Soren Schmidt" Cc: "FreeBSD Questions" References: <200002221730.SAA78748@freebsd.dk> Subject: RE: ABIT BP6, UDMA-66 and wdc AC310200 Date: Wed, 23 Feb 2000 16:39:42 -0600 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2314.1300 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hi Soren, Sorry for the intrusion, Im not using the ata driver, but maybe you can give me some light, Im subscribed to current, and I was reading this mail, I got impressed with the speed that you can get with your disks, so my question its the following (see below): > > # dd if=/dev/ad4s2 of=/dev/null bs=40960k count=10 > > 10+0 records in > > 10+0 records out > > 419430400 bytes transferred in 30.797045 secs (13619177 bytes/sec) > > Thats probably close to what your drive can pull of the platters... > I get 22-23MB/sec off an IBM DPTA drive here with < 1% cpu usage, > so the driver is not the problem.. > I have a config with 7 disks online, giving me a raw throughput > of ~100MB/s sustained, that is about the limit of what can be done > over the PCI bus... If I make this test in a server with scsi-3 disks attached, 10Krpm 9GB HotSwap IBM Disks, in a Netfinity 5000 Dual PIII-600 768MB Ram, with the server totally idle, fresh install (3.4) I can hardly get 6MB/sec trasferred, how can I achieve more speed with this configuration, Im asking this to you because you can get a lot better performance with your disks than I do, and there its maybe some tweaking that Im not aware of. # dd if=/dev/da0s1 of=/dev/null bs=40960k count=10 10+0 records in 10+0 records out 419430400 bytes transferred in 71.546849 secs (5862318 bytes/sec) systat -iostat shows 2950 tps for this disk top during this test. The disks have softupdates enabled, here its a dmesg of the system: Copyright (c) 1992-1999 FreeBSD Inc. Copyright (c) 1982, 1986, 1989, 1991, 1993 The Regents of the University of California. All rights reserved. FreeBSD 3.4-RELEASE #7: Tue Feb 22 13:33:21 GMT 2000 root@cache.megared.net.mx:/usr/src/sys/compile/kernel Timecounter "i8254" frequency 1193182 Hz CPU: Pentium III (686-class CPU) Origin = "GenuineIntel" Id = 0x673 Stepping = 3 Features=0x383fbff> real memory = 805306368 (786432K bytes) avail memory = 780263424 (761976K bytes) Programming 24 pins in IOAPIC #0 FreeBSD/SMP: Multiprocessor motherboard cpu0 (BSP): apic id: 1, version: 0x00040011, at 0xfee00000 cpu1 (AP): apic id: 0, version: 0x00040011, at 0xfee00000 io0 (APIC): apic id: 14, version: 0x00170011, at 0xfec00000 Preloaded elf kernel "kernel" at 0xc0263000. Pentium Pro MTRR support enabled Probing for devices on PCI bus 0: chip0: rev 0x04 on pci0.0.0 chip1: rev 0x02 on pci0.0.1 ahc0: rev 0x04 int a irq 11 on pci0.6.0 ahc0: aic7895 Wide Channel A, SCSI Id=7, 16/255 SCBs ahc1: rev 0x04 int b irq 15 on pci0.6.1 ahc1: aic7895 Wide Channel B, SCSI Id=7, 16/255 SCBs lnc1: rev 0x36 int a irq 10 on pci0.9.0 lnc1: PCnet-FAST+ address 00:06:29:50:fe:37 vga0: rev 0x16 int a irq 9 on pci0.10.0 chip2: rev 0x4d on pci0.15.0 ide_pci0: rev 0x4a int a irq 10 on pci0.15.1 Probing for devices on PCI bus 1: Probing for devices on PCI bus 2: Probing for devices on the ISA bus: sc0 on isa sc0: VGA color <16 virtual consoles, flags=0x0> atkbdc0 at 0x60-0x6f on motherboard atkbd0 irq 1 on isa psm0 irq 12 on isa psm0: model Generic PS/2 mouse, device ID 0 sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa sio0: type 16550A sio1 at 0x2f8-0x2ff irq 3 on isa sio1: type 16550A fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa fdc0: FIFO enabled, 8 bytes threshold fd0: 1.44MB 3.5in wdc0 at 0x1f0-0x1f7 irq 14 on isa wdc0: unit 0 (atapi): , removable, accel, dma, iordis acd0: drive speed 5500KB/sec, 128KB cache acd0: supported read types: CD-R, CD-RW, CD-DA, packet track acd0: Audio: play, 255 volume levels acd0: Mechanism: ejectable tray acd0: Medium: no/blank disc inside, unlocked, lock protected lnc0 not found at 0x280 vga0 at 0x3b0-0x3df maddr 0xa0000 msize 131072 on isa npx0 on motherboard npx0: INT 16 interface APIC_IO: Testing 8254 interrupt delivery APIC_IO: routing 8254 via pin 2 IP packet filtering initialized, divert disabled, rule-based forwarding enabled, default to accept, logging disabled Waiting 10 seconds for SCSI devices to settle SMP: AP CPU #1 Launched! sa0 at ahc1 bus 0 target 6 lun 0 sa0: Removable Sequential Access SCSI-2 device sa0: 5.000MB/s transfers (5.000MHz, offset 15) pass6 at ahc1 bus 0 target 14 lun 0 pass6: Fixed Processor SCSI-2 device pass6: 3.300MB/s transfers da0 at ahc1 bus 0 target 0 lun 0 da0: Fixed Direct Access SCSI-3 device da0: 11.626MB/s transfers (5.813MHz, offset 8, 16bit), Tagged Queueing Enabled da0: 8678MB (17774160 512 byte sectors: 255H 63S/T 1106C) da4 at ahc1 bus 0 target 4 lun 0 da4: Fixed Direct Access SCSI-3 device da4: 11.626MB/s transfers (5.813MHz, offset 8, 16bit), Tagged Queueing Enabled da4: 8678MB (17774160 512 byte sectors: 255H 63S/T 1106C) da3 at ahc1 bus 0 target 3 lun 0 da3: Fixed Direct Access SCSI-2 device da3: 11.626MB/s transfers (5.813MHz, offset 8, 16bit), Tagged Queueing Enabled da3: 8678MB (17774160 512 byte sectors: 255H 63S/T 1106C) da2 at ahc1 bus 0 target 2 lun 0 da2: Fixed Direct Access SCSI-2 device da2: 11.626MB/s transfers (5.813MHz, offset 8, 16bit), Tagged Queueing Enabled da2: 8678MB (17774160 512 byte sectors: 255H 63S/T 1106C) da1 at ahc1 bus 0 target 1 lun 0 da1: Fixed Direct Access SCSI-2 device da1: 11.626MB/s transfers (5.813MHz, offset 8, 16bit), Tagged Queueing Enabled da1: 8678MB (17774160 512 byte sectors: 255H 63S/T 1106C) changing root device to da0s1a If you think Im doing something wrong, or maybe the disks are not what I think they are, or the ahc driver its limiting the speed, or the aic7895 embedded card its limiting the speed, or something else, I would apreciate any observation you can give me. P.S. Im not copying to current, because its not running current at the moment, Im copying to questions. Thanks in Advance Syncerely Ales To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message