Re: IPIQ messaging patch #1 for SMP
:
:On Sun, Apr 10, 2005 at 12:01:33AM -0700, Matthew Dillon wrote:
:> * Implement a passive IPI message that does not signal the target cpu
:> at all. The target cpu will process the message the next time it
:> polls the queue (no less often then once a tick). Adjust the
:> slab free() code to use this new API when freeing blocks owned by
:> a different cpu. Such messages have huge target latencies (obviously)
:> but cost virtually nothing on either the originating or target cpus
:> because no hardware IPI is generated for the message.
:
:How does this affect low memory situations?
:
:Joerg
It wouldn't have any effect at all.
-Matt
Matthew Dillon
<dillon@backplane.com>
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