To whom it may concern,
I am interested in helping out as a document writer. I have a degree in (and
am currently a teacher of) English. I have over three years experience as a
published music reviewer. I do not have any experience in technical writing,
but I would like to break into the field.
T
Sergio López, le Fri 23 Sep 2011 00:17:10 +0200, a écrit :
> Perhaps a simple flag in the object indicating if some of its pages
> have been activated, and a change in vm_page_activate to turn on that
> flag, would be enough to save a significant number of cycles.
>
> Better ideas?
Perhaps vm_obj
2011/9/13 Sergio López :
> Hi,
>
> Does somebody know the reasoning behind the function "poke_pages" in
> ext2fs:truncate.c? I suppose it's there to work around some kind of
> memory object paging error in GNU Mach, but I'm not sure about it's
> real purpose, or if it's still needed nowadays.
>
An
More on this subject:
- MEMORY_OBJECT_COPY_DELAY is actually needed to be able to provide
private mmaps without copying the entire object at once.
- This attribute only changes the behavior of
vm_object_copy_strategically, between doing a delayed copy
(COPY_DELAY) or copying the pages for real (
2011/10/7 Samuel Thibault :
> Perhaps vm_object_deactivate_pages should at least keep the
> vm_page_queue_lock for more than just one iteration. XNU does it for 64
> pages.
>
> Otherwise, it looks to me like a simple and sensible optimization.
Reducing lock contention would surely help. I'm also c
