On Monday, November 4, 2002, at 07:54 AM, Heiko Panther wrote:

Hi Umesh,

...

...

my IOKit driver wants to allocate really a lot of buffers with

...

...

IOMalloc(). At about 4 MB of alloc'd memory, further calls to

...

...

IOMalloc() fail. Is there some kind of limit defined? How can I

...

...

circumvent this problem?

...

Hope you realize that's 4MB of kernel *wired* memory....

Of course.

For my testing purposes, I can afford wasting some wired memory. Could

you tell me why it fails, and how I can get more of that precious wired

memory?

Thank you-

Heiko Panther

UTSL. IOMalloc() is just a wrapper around kalloc(). kalloc() allocates memory from a sub map which is limited to 16MB. May be in your case other kalloc() consumers already gobbled up 12MB... Hence you get a failure at around 4MB. --Umesh -- Umesh Vaishampayan Apple Computer, Inc. Mac OS X Kernel Ph: (408) 974 0229 _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.