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    SubjectRe: Kernel 2.6.9 Multiple Page Allocation Failures (Part 2)
    On Thu, Nov 04, 2004 at 10:17:22AM -0200, Marcelo Tosatti wrote:
    > What is min_free_kbytes default on your machine?
    I think it was 768, definitely around 700-800.
    2.6.9 said:
    Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
    Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
    Memory: 4058200k/4095936k available (2005k kernel code, 36816k reserved, 995k
    data, 196k init, 3178432k highmem)

    > > I tried the following kernels: 2.6.9-mm1, 2.6.10-rc1-bk12, 2.6.9-rc3-bk6,
    > > 2.6.9-rc3-bk5 all of which froze at some point presenting me only with the
    > > above page allocation failure. (no more sysrq)
    > This should be harmless as Andrew said - it would be helpful if you could
    > plug a serial cable to the box - this last oops on the picture doesnt say
    > much.
    Well right now the machine is running 2.4.28-rc1 with the 3w-9nnn patch by
    Adam Radford from this list and i would like to see it run stable for about a
    day before i give 2.6 another try. I think i'll have a terminal server hooked
    up by then.

    > How intense is the network traffic you're generating?
    I was around 60-80 mbit/s each direction at i think 16k interrupts/s.

    With 2.4.28-rc1 this is currently at 180mbit/s 27kpps up, 116mbit/s 24kpps down
    still swapping a bit but no kernel messages on this, just around 1.7 rx

    > 2.6.7 was stable under the same load?
    No, sorry to give you this impression, 2.6.7 is just what some of my collegues
    and i consider the more stable 2.6 kernel under heavy i/o load.

    > Something is definately screwed, and there are quite an amount of
    > similar reports.
    Can i tell people its ok to see nf_hook_slow in the stack trace as it's
    vm-related? A collegue was quite bluffed when i showed him. ;)

    > XFS also seems to be very memory hungry...
    I have 8 XFS-Filesystems in use here with several thousand files from some k to
    your 'usual' 4GB DVD-image. XFS built as a module at first and then inline but
    that did not change anything off course. 2x200 + 6x250GB that is.

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