Hey Abhinav,
We've taken a different tack with DTrace: rather than optimize the
data flow
from kernel to user-land, we've given the user primitives to prune and
accumulate data as close to the source as possible to minimize data
flow and
present the user with a concise answer.
May I ask why you've chosen this project?
Adam
On Jun 25, 2009, at 2:37 PM, abhinav duggal wrote:
Hi all,
I have a question on dtrace buffer management.I am kind of new to
dtrace development.I am looking into optimizing dtrace from the
point of view of reducing the memory copies from user to kernel
space and vice versa.
Isn't it possible to share memory between user and kernel space by
preallocating and using that shared memory to transfer data between
user and kernel space? This would prevent those expensive memory
copies.Is there any problem in doing that.Sorry for my lack of
expertise with dtrace development,I would like it to know whether it
can be done or not?
Thanks a lot.
With Regards,
Abhinav.
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Adam Leventhal, Fishworks http://blogs.sun.com/ahl
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