From owner-freebsd-stable Thu Oct 14 23:26:42 1999 Delivered-To: freebsd-stable@freebsd.org Received: from shell.webmaster.com (mail.webmaster.com [209.133.28.73]) by hub.freebsd.org (Postfix) with ESMTP id 3228014D75 for ; Thu, 14 Oct 1999 23:26:26 -0700 (PDT) (envelope-from davids@webmaster.com) Received: from whenever ([209.133.29.2]) by shell.webmaster.com (Post.Office MTA v3.5.3 release 223 ID# 0-12345L500S10000V35) with SMTP id com; Thu, 14 Oct 1999 23:26:24 -0700 From: "David Schwartz" To: "Parag Patel" , Subject: RE: Odd dmesg output or SCSI tagged-queueing problem? Date: Thu, 14 Oct 1999 23:26:24 -0700 Message-ID: <000201bf16d6$344e1c90$021d85d1@youwant.to> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2377.0 Importance: Normal In-Reply-To: <689.939968210@pinhead.parag.codegen.com> X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG From cam_xpt.c: /* * Slow when tagged queueing is enabled. Write performance * steadily drops off with more and more concurrent * transactions. Best sequential write performance with * tagged queueing turned off and write caching turned on. * * PR: kern/10398 * Submitted by: Hideaki Okada * Drive: DCAS-34330 w/ "S65A" firmware. * * The drive with the problem had the "S65A" firmware * revision, and has also been reported (by Stephen J. * Roznowski ) for a drive with the "S61A" * firmware revision. * * Although no one has reported problems with the 2 gig * version of the DCAS drive, the assumption is that it * has the same problems as the 4 gig version. Therefore * this quirk entries disables tagged queueing for all * DCAS drives. */ > -----Original Message----- > From: owner-freebsd-stable@FreeBSD.ORG > [mailto:owner-freebsd-stable@FreeBSD.ORG]On Behalf Of Parag Patel > Sent: Thursday, October 14, 1999 11:17 PM > To: freebsd-stable@freebsd.org; freebsd-scsi@freebsd.org > Subject: Odd dmesg output or SCSI tagged-queueing problem? > > > > Hello. I just noticed my system's two IBM SCSI disks aren't displaying > a "tagged queueing enabled" message. I only noticed it when I added a > 3rd disk to the system today. Here's the edited dmesg output (the > complete output is appended below): > > ... > ahc0: rev 0x00 int a irq 19 > on pci0.6.0 > ahc0: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs > ... > da2 at ahc0 bus 0 target 2 lun 0 > da2: Fixed Direct Access SCSI-2 device > da2: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged > Queueing Enabled > da2: 4341MB (8890760 512 byte sectors: 255H 63S/T 553C) > ... > da1 at ahc0 bus 0 target 1 lun 0 > da1: Fixed Direct Access SCSI-2 device > da1: 40.000MB/s transfers (20.000MHz, offset 8, 16bit) > da1: 4134MB (8467200 512 byte sectors: 255H 63S/T 527C) > ... > da0 at ahc0 bus 0 target 0 lun 0 > da0: Fixed Direct Access SCSI-2 device > da0: 40.000MB/s transfers (20.000MHz, offset 8, 16bit) > da0: 4134MB (8467200 512 byte sectors: 255H 63S/T 527C) > ... > > Now I seem to remember that these IBM drives used to be displayed like > the Quantum, that is with the string "Tagged Queueing Enabled". I > searched all the /var/log/messages files to see if any earlier kernel > did display this, but nothing up to 4.0-CURRENT as of May 1999 displayed > this string, and I've switched to running STABLE since. > > A search of the mail archives didn't turn up anything directly related > to this, although one other person with the *identical* 7880 and IBM > drive *did* have "Tagged Queueing Enabled" in their dmesg output. So it > seems that at least I'm not mis-remembering this. I think. > > Thoughts? Thanks! > > > -- Parag Patel > > > Copyright (c) 1992-1999 FreeBSD Inc. > Copyright (c) 1982, 1986, 1989, 1991, 1993 > The Regents of the University of California. All rights reserved. > FreeBSD 3.3-STABLE #3: Thu Oct 14 15:12:05 PDT 1999 > root@pinhead.parag.codegen.com:/usr/src/sys/compile/PINHEAD > Timecounter "i8254" frequency 1193182 Hz > CPU: Pentium II (686-class CPU) > Origin = "GenuineIntel" Id = 0x634 Stepping = 4 > > Features=0x80fbff ,PGE,MCA,CMOV,MMX> > real memory = 268435456 (262144K bytes) > avail memory = 258191360 (252140K 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: 2, version: 0x00170011, at 0xfec00000 > Preloaded elf kernel "kernel" at 0xc02ed000. > Pentium Pro MTRR support enabled > Probing for devices on PCI bus 0: > chip0: rev 0x03 on pci0.0.0 > chip1: rev 0x03 on pci0.1.0 > chip2: rev 0x01 on pci0.4.0 > ide_pci0: rev 0x01 on pci0.4.1 > chip3: rev 0x01 on pci0.4.3 > ahc0: rev 0x00 int a irq 19 > on pci0.6.0 > ahc0: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs > fxp0: rev 0x05 int a > irq 17 on pci0.11.0 > fxp0: Ethernet address 00:a0:c9:da:98:26 > Probing for devices on PCI bus 1: > vga0: rev 0x00 int a irq > 16 on pci1.0.0 > Probing for PnP devices: > CSN 1 Vendor ID: CTL00e4 [0xe4008c0e] Serial 0x08de2f0a Comp ID: > PNPb02f [0x2fb0d041] > 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 MouseMan+, 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 > sio2 at 0x3e8-0x3ef irq 5 on isa > sio2: type 16550A > sio3 at 0x2e8-0x2ef irq 9 on isa > sio3: type 16550A > ppc0 at 0x378 irq 7 on isa > ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode > ppc0: FIFO with 16/16/9 bytes threshold > lpt0: on ppbus 0 > lpt0: Interrupt-driven port > ppi0: on ppbus 0 > 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 flags 0xa0ffa0ff on isa > wdc0: unit 0 (atapi): , removable, > accel, ovlap, dma, iordis > acd0: drive speed 5512KB/sec, 256KB cache > acd0: supported read types: CD-R, CD-RW, CD-DA > acd0: Audio: play, 255 volume levels > acd0: Mechanism: ejectable tray > acd0: Medium: no/blank disc inside, unlocked > wdc1 at 0x170-0x177 irq 15 flags 0xa0ffa0ff on isa > wdc1: unit 0 (wd2): , DMA, 32-bit, multi-block-16 > wd2: 17206MB (35239680 sectors), 34960 cyls, 16 heads, 63 S/T, 512 B/S > sb0 at 0x220 irq 10 drq 1 on isa > snd0: > sbxvi0 at drq 5 on isa > snd0: > sbmidi0 not found at 0x330 > opl0 at 0x388 on isa > snd0: > joy0 at 0x201 on isa > joy0: joystick > joy1 not probed due to I/O address conflict with joy0 at 0x201 > 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 > Waiting 3 seconds for SCSI devices to settle > SMP: AP CPU #1 Launched! > pass4 at ahc0 bus 0 target 6 lun 0 > pass4: Fixed Scanner SCSI-2 device > pass4: 3.300MB/s transfers > da2 at ahc0 bus 0 target 2 lun 0 > da2: Fixed Direct Access SCSI-2 device > da2: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged > Queueing Enabled > da2: 4341MB (8890760 512 byte sectors: 255H 63S/T 553C) > changing root device to da0s2a > cd0 at ahc0 bus 0 target 4 lun 0 > cd0: Removable Worm SCSI-2 device > cd0: 10.000MB/s transfers (10.000MHz, offset 15) > cd0: Attempt to query device size failed: NOT READY, Medium not present > da1 at ahc0 bus 0 target 1 lun 0 > da1: Fixed Direct Access SCSI-2 device > da1: 40.000MB/s transfers (20.000MHz, offset 8, 16bit) > da1: 4134MB (8467200 512 byte sectors: 255H 63S/T 527C) > da0 at ahc0 bus 0 target 0 lun 0 > da0: Fixed Direct Access SCSI-2 device > da0: 40.000MB/s transfers (20.000MHz, offset 8, 16bit) > da0: 4134MB (8467200 512 byte sectors: 255H 63S/T 527C) > pid 493 (kpilotDaemon), uid 1000: exited on signal 6 > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-stable" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message