Date: Thu, 15 Nov 2001 16:21:51 -0500 From: Chris Ptacek <cptacek@sitaranetworks.com> To: "'freebsd-hackers@freebsd.org'" <freebsd-hackers@freebsd.org> Subject: kernel malloc questions... Message-ID: <31269226357BD211979E00A0C9866DAB02BB9745@rios.sitaranetworks.com>
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Hey all, I have a couple questions about kernel mallocs.
I am trying to malloc a large amount of memory for a KLD during load and the
malloc keeps failing. I am trying to malloc 64-128MB for a memory pool for
a project I am working on. My system has 196MB of memory and the KLD is
loaded at startup so I am relativly sure that I have enough memory to
satisfy the request.
I guess the questions are:
Is there a limit to the amount of memory the kernel (including modules) can
malloc?
If there is how do I change this amount?
I am currently using M_NOWAIT, would using M_WAITOK be better? Would this
end up hanging my system in this case?
Would I be better off mallocing many smaller buffers into a memory pool (64
1MB buffers)?
I don't have access to the mailing lists at the moment and would appreciate
it if you could CC me with any replies.
Thanks,
Chris
cptacek@sitaranetworks.com
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