Richard Scobie wrote:
I will soon be adding another same sized drive to an existing 3 drive
RAID 5 array.
The machine is running Fedora Core 6 with kernel 2.6.20-1.2952.fc6 and
mdadm 2.5.4, both of which are the latest available Fedora packages.
Is anyone aware of any obvious bugs in either
Justin Piszcz wrote:
I have found a 16MB stripe_cache_size results in optimal performance
after testing many many values :)
We have discussed this before, my experience has been that after 8 x
stripe size the performance gains hit diminishing returns, particularly
for typical write instead
On Mon, 25 Jun 2007, Bill Davidsen wrote:
Justin Piszcz wrote:
I have found a 16MB stripe_cache_size results in optimal performance after
testing many many values :)
We have discussed this before, my experience has been that after 8 x stripe
size the performance gains hit diminishing
On Mon, 25 Jun 2007, Justin Piszcz wrote:
On Mon, 25 Jun 2007, Bill Davidsen wrote:
Justin Piszcz wrote:
I have found a 16MB stripe_cache_size results in optimal performance after
testing many many values :)
We have discussed this before, my experience has been that after 8 x stripe
On Mon, 25 Jun 2007, Justin Piszcz wrote:
On Mon, 25 Jun 2007, Justin Piszcz wrote:
On Mon, 25 Jun 2007, Bill Davidsen wrote:
Justin Piszcz wrote:
I have found a 16MB stripe_cache_size results in optimal performance
after testing many many values :)
We have discussed this before,
On Mon, 25 Jun 2007, Justin Piszcz wrote:
On Mon, 25 Jun 2007, Justin Piszcz wrote:
On Mon, 25 Jun 2007, Justin Piszcz wrote:
On Mon, 25 Jun 2007, Bill Davidsen wrote:
Justin Piszcz wrote:
I have found a 16MB stripe_cache_size results in optimal performance
after testing many
On Thu, 21 Jun 2007, Jon Nelson wrote:
On Thu, 21 Jun 2007, Raz wrote:
What is your raid configuration ?
Please note that the stripe_cache_size is acting as a bottle neck in some
cases.
Well, that's kind of the point of my email. I'll try to restate things,
as my question appears to
7. And now, the question: the best absolute 'write' performance comes
with a stripe_cache_size value of 4096 (for my setup). However, any
value of stripe_cache_size above 384 really, really hurts 'check' (and
rebuild, one can assume) performance. Why?
Question:
After performance goes bad does
On Mon, 25 Jun 2007, Jon Nelson wrote:
On Thu, 21 Jun 2007, Jon Nelson wrote:
On Thu, 21 Jun 2007, Raz wrote:
What is your raid configuration ?
Please note that the stripe_cache_size is acting as a bottle neck in some
cases.
Well, that's kind of the point of my email. I'll try to
On Mon, 25 Jun 2007, Dan Williams wrote:
7. And now, the question: the best absolute 'write' performance comes
with a stripe_cache_size value of 4096 (for my setup). However, any
value of stripe_cache_size above 384 really, really hurts 'check' (and
rebuild, one can assume) performance.
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