RE: hang with raid, postgresql

From: Don Bowman (don_at_sandvine.com)
Date: 05/30/04

  • Next message: Paul Murphy: "Re: reboot and shutdown don't work, suspect acpi" 
    To: 'Doug White' <dwhite@gumbysoft.com>, Don Bowman <don@sandvine.com>
Date: Sun, 30 May 2004 16:19:38 -0400

    From: Doug White [mailto:dwhite@gumbysoft.com]
    > On Sun, 30 May 2004, Don Bowman wrote:
    >
    > >
    > > I have a system with 2x 2.8GHz XEON (P4), intel e7501 chipset,
    > > 4GB of ram, aac [adaptec 2200s] raid with 4 scsi
    > > disks. I have also tried asr (adaptec 2015).
    > > I have tried two different motherboards.
    > > The only application the machine runs is postgresql,
    > > with about ~30 databases, about ~250GB of data.
    > >
    > > I'm finding the machine locks up solid once a day
    > > or so (sometimes more, sometimes less, no pattern
    > > of time of day). I know its not a hardware issue, it
    > > is reliable with FreeBSD 4.7. I've run through memory
    > > test, disk test, etc.
    > >
    > > There appears to be a correlation between
    > > disk activity (postgresql vacuum) and the lockup,
    > > but i can't be sure.
    >
    > Temperature?
    >
    > What motherboard is it exactly?

    lmmon shows the mobo temperature @ 28C. It is in
    an AC-controlled environment (~20C ambient). The system
    has 6 blower fans, ducted over the CPU's, with the
    copper heat sinks designed for the 3.2GHz XEON.
    It has 3 power supplies, each with separate AC
    inlet, fed from a UPS with filtered power.
    It should have ~150% airflow redundancy, and
    ~200% power redundancy.
    This is a supermicro X5DPE motherboard.
    http://www.supermicro.com/products/chassis/3U/933/SC933S2-R760.cfm
    shows the system.
    It was tested for ~1week with FreebSD 4.7
    at temperature in an environmental chamber,
    including cycling into memtest86 every 2 hours.

    I've been battling this hang for ~6weeks, this is
    a swap-out of all the hardware (new system).

    --don
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  • Next message: Paul Murphy: "Re: reboot and shutdown don't work, suspect acpi"

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