Subject: Re: tape drive on siop causes pauses
To: None <current-users@netbsd.org>
From: Eric Schnoebelen <eric@cirr.com>
List: current-users
Date: 01/08/2001 12:50:51
Manuel Bouyer writes:
- Anyone else using siop with tape drives ? If so, with which kernel version?

	Yes, I'm using siop on 1.5 with three Exabyte EXB8505
and one Archive Python drives (and changers) on a DEC AlphaPC64.

	Attached is the dmesg output follows:


    [ preserving 299784 bytes of netbsd ELF symbol table ]
    Copyright (c) 1996, 1997, 1998, 1999, 2000
	The NetBSD Foundation, Inc.  All rights reserved.
    Copyright (c) 1982, 1986, 1989, 1991, 1993
	The Regents of the University of California.  All rights reserved.

    NetBSD 1.5 (SLURPEE) #3: Sat Jan  6 18:07:58 CST 2001
	eric@slurpee:/home/slurpee/eric/work/usr/src/sys/arch/alpha/compile/SLURPEE
    Digital AlphaPC 64 274 MHz
    8192 byte page size, 1 processor.
    total memory = 65536 KB
    (2048 KB reserved for PROM, 63488 KB used by NetBSD)
    avail memory = 54912 KB
    using 409 buffers containing 3272 KB of memory
    mainbus0 (root)
    cpu0 at mainbus0: ID 0 (primary), 21064A-2 (pass 1.1)
    apecs0 at mainbus0: DECchip 21072 Core Logic chipset
    apecs0: DC21071-CA pass 2, 128-bit memory bus
    apecs0: DC21071-DA pass 2
    pci0 at apecs0 bus 0
    pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
    siop0 at pci0 dev 5 function 0: Symbios Logic 53c810 (fast scsi)
    siop0: interrupting at eb64+ irq 2
    scsibus0 at siop0: 8 targets, 8 luns per target
    siop1 at pci0 dev 6 function 0: Symbios Logic 53c825 (fast wide scsi)
    siop1: interrupting at eb64+ irq 0
    scsibus1 at siop1: 16 targets, 8 luns per target
    siop2 at pci0 dev 7 function 0: Symbios Logic 53c810a (fast scsi)
    siop2: interrupting at eb64+ irq 1
    scsibus2 at siop2: 8 targets, 8 luns per target
    sio0 at pci0 dev 8 function 0: Intel 82378ZB System I/O (SIO) (rev. 0x84)
    tlp0 at pci0 dev 9 function 0: DECchip 21143 Ethernet, pass 4.1
    tlp0: interrupting at eb64+ irq 3
    tlp0: Ethernet address 00:40:f6:f4:62:83
    tlp0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX
    isa0 at sio0
    com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
    com0: console
    com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
    pckbc0 at isa0 port 0x60-0x64
    wdc0 at isa0 port 0x1f0-0x1f7 irq 14
    wd0 at wdc0 channel 0 drive 0: <IBM-DJNA-351520>
    wd0: drive supports 16-sector pio transfers, lba addressing
    wd0: 14664 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 30033360 sectors
    wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 4
    lpt0 at isa0 port 0x3bc-0x3bf irq 7
    pcppi0 at isa0 port 0x61
    spkr0 at pcppi0
    isabeep0 at pcppi0
    fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
    fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
    fd1 at fdc0 drive 1: 1.44MB, 80 cyl, 2 head, 18 sec
    mcclock0 at isa0 port 0x70-0x71: mc146818 or compatible
    scsibus0: waiting 2 seconds for devices to settle...
    siop0: target 0 now synchronous at 10.0Mhz, offset 8
    sd0 at scsibus0 target 0 lun 0: <COMPAQPC, DPES-31080, S31K> SCSI2 0/direct fixed
    siop0: target 0 now synchronous at 10.0Mhz, offset 8
    sd0: 1001 MB, 4903 cyl, 4 head, 104 sec, 512 bytes/sect x 2051000 sectors
    scsibus1: waiting 2 seconds for devices to settle...
    ch0 at scsibus1 target 0 lun 0: <EXABYTE, EXB-480, 3.01> SCSI2 8/changer removable
    ch0: 81 slots, 3 drives, 1 picker, 1 portal
    st0 at scsibus1 target 1 lun 0: <EXABYTE, EXB-85058SQANXR1, 07R0> SCSI2 1/sequential removable
    st0: drive empty
    siop1: target 1 using 8bit transfers
    siop1: target 1 now synchronous at 5.0Mhz, offset 8
    st1 at scsibus1 target 2 lun 0: <EXABYTE, EXB-85058SQANXR1, 0781> SCSI2 1/sequential removable
    st1: drive empty
    siop1: target 2 using 8bit transfers
    siop1: target 2 now synchronous at 5.0Mhz, offset 8
    st2 at scsibus1 target 3 lun 0: <EXABYTE, EXB-85058SQANXR1, 0781> SCSI2 1/sequential removable
    st2: drive empty
    siop1: target 3 using 8bit transfers
    siop1: target 3 now synchronous at 5.0Mhz, offset 8
    scsibus2: waiting 2 seconds for devices to settle...
    st3 at scsibus2 target 2 lun 0: <ARCHIVE, 4586XX 28887-XXX, 0420> SCSI2 1/sequential removable
    st3: drive empty
    siop2: target 2 now synchronous at 5.0Mhz, offset 8
    ch1 at scsibus2 target 2 lun 1: <ARCHIVE, 4586XX 28887-XXX, 0420> SCSI2 8/changer removable
    ch1: 0 slots, 1 drive, 1 picker, 0 portals
    root on sd0a dumps on sd0b
    root file system type: ffs

--
Eric Schnoebelen		eric@cirr.com		http://www.cirr.com
		"Fog and FUD sighted in Newsgroups - .GIFs at 11!"