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Date:      Sat, 12 Jan 2002 22:01:27 -0500 (EST)
From:      "Andrew R. Reiter" <arr@FreeBSD.org>
To:        freebsd-smp@FreeBSD.org
Subject:   SMPng Status Update
Message-ID:  <Pine.NEB.3.96L.1020112215955.5819A-100000@fledge.watson.org>

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SMPng Progress Update
=====================
Contact: freebsd-smp@FreeBSD.org
Date: January 12th, 2002
URL: http://www.FreeBSD.org/smp/

Recent Progress
---------------
- mb_alloc(): Bosko Milekic has been doing some cleaning up on the 
	      mbuf and cluster allocator.  The code has been in the
	      tree and pretty stable for about 7 or 8 months now.

- fd locking patches: Alfred Perlstein is working on getting make world
		      to build with regards to locking the fd code.  A 
		      recent patch can be found at:
			http://people.freebsd.org/~alfred/fd.diff

- icu_lock: John Baldwin added the icu_lock in the pci interrupt code
	    up a layer in order to resolve locking problems during 
	    low-level console init. (p4)

- kernel preemption:  p4 work by John Baldwin

- TLB shootdowns: Peter Wemm has been working on pmap cleanups for x86
		  SMP TLB shootdowns.


To do
-----
- mb_alloc():  Wait and see what happens with Jeff Roberson's general 
	       purpose allocator and how it will affect mbuf and cluster
	       allocation.
- proc lockdown: Continued work in the jhb proc lock tree in perforce.
- Kernel preemption
- Making ktrace handle requests asynchronously via a kernel process
- Determining affinity rules; waiting on KSEs to be implemented in full.
  - Discuss and decide how this will affect interrupt latency issues
  - Look at the linux per-cpu runqueues further
- Determining the next steps for locking down the network stack.
- fd locking: modify the code if needed to please -smp@ and commit
- Continue work on tlb shootdowns.
- Check SMPng web page for more information on TODOs.

(comments and/or suggestions on format or layout, please reply to sender
only)

--
Andrew R. Reiter
arr@watson.org
arr@FreeBSD.org


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