On Sun, Sep 09, 2007 at 10:06:11PM -0400, Tom Evans wrote:
I have done (and still do raid5) without performance impact (especially
what I saw when the card was in a different slot).
I will redo that array as raid5 to see if it makes a difference - I know
software raid is expensive, just
I turned down the max rebuild speed quite a bit and it generates a raid-6
array without killing the machine (and in shorter time than when the limit
is set at the default).
It seems like the resync process is so greedy for bandwidth that it
actually hurts itself if the CPU power is not there to
On Mon, Sep 10, 2007 at 12:59:25PM -0400, tom wrote:
I turned down the max rebuild speed quite a bit and it generates a raid-6
array without killing the machine (and in shorter time than when the limit
is set at the default).
It seems like the resync process is so greedy for bandwidth that
On Sun, Sep 09, 2007 at 12:17:16AM -0400, Tom Evans wrote:
I use a 3124-2 based eSata card with a 4726-based port muliplier
array/case, (plus the PMP patches).
I then attempt to create a a raid6 array on 4 drives - the machine
freezes something fierce during the process.
Can barely key a
Lennart Sorensen wrote:
On Sun, Sep 09, 2007 at 12:17:16AM -0400, Tom Evans wrote:
Well raid6 is pretty cpu intensive. Also during the initial sync it
will by default try to use all disk bandwidth. You can adjust the max
speed for resync using sysctl (or echo in /proc). By default the
On Fri, Sep 07, 2007 at 11:26:36PM -0400, Tom Evans wrote:
Darn - it was suggested that a performance issue I'm having with a Sil
3124 based pci-x esata card and a port multiplier might be helped with
pre-emption enabled - just not for Alpha :)
I know that the DS20 often has PCI issues -
Are there patches available for Alpha in the case that it does not?
...tom
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On Fri, Sep 07, 2007 at 09:19:29AM -0400, Tom Evans wrote:
Are there patches available for Alpha in the case that it does not?
Not sure. I do not see a PREEMPT option in the config file on my alpha
running Etch though, so I would suspect that it does not support preempt
at this time. As for
Darn - it was suggested that a performance issue I'm having with a Sil
3124 based pci-x esata card and a port multiplier might be helped with
pre-emption enabled - just not for Alpha :)
I know that the DS20 often has PCI issues - anyone know of what may
cause issues with a 64bit PCI-X card
I've included an lspci -v -v at the end in case anyone has any ideas
what it all means ...
...tom
I know that the DS20 often has PCI issues - anyone know of what may
cause issues with a 64bit PCI-X card on the machine?
Any recommended placements for such thing?
I have 3 64 bit cards in the
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