On Friday 13 July 2007, Peter Williams wrote:

Gene Heskett wrote:

quoted

On Friday 13 July 2007, Peter Williams wrote:

quoted

Ingo Molnar wrote:

quoted

* Gregory Haskins [off-list ref] wrote:

quoted

On Thu, 2007-07-12 at 14:07 +0200, Ingo Molnar wrote:

quoted

* Gregory Haskins [off-list ref] wrote:

quoted

Hi Ingo, Thomas, and the greater linux-rt community,

	I just wanted to let you guys know that our team has a port of
the 21.5-rt20 patch for the 2.6.22 kernel available. [...]

great! We had the upstream -rt port to .22 in the works too, it was
just held up by the hpet breakage - which Thomas managed to fix
earlier today. I've released the 2.6.22.1-rt1 patch to the usual
place:

    http://redhat.com/~mingo/realtime-preempt/

Thats awesome, Ingo!  Thanks!  Could you publish a broken out version
as well?  We found it extremely valuable to be able to bisect this
beast while working on the 21-22 port.

we are working on something in this area :) Stay tuned ...

I've just been reviewing these patches and have spotted an error in the
file mm/slob.c at lines 500-501 whereby a non existent variable "c" is
referenced.  The attached patch is a proposed fix to the problem.

Could this explain why 2.6.22.1-rt1 seems to use a lot of swap?  I've been
as high as 570 megs into swap, currently at 286megs after doing a
swapoff --a;swapon -a about 8 hours ago.

No.  This problem would have caused the build to fail if slob was
configured.

Peter

Which, now that I've gone back and looked only has SLAB as the choice in the 
make xconfig.  It did that switch rather silently as I had been using SLUB 
all the way through the 2.6.22-rcN series just to exersize the new option.

In any event, both rt2 and rt3 seem to have that under total control now.  No 
swap is being indicated by htop, and kmail is up to 122 megs.  Uptime with 
rt3 is 8.5 hours now & so far everything is running rather nicely.  Except of 
course for tvtime.  I fwd'd the logs from that to the v4l list, but haven't 
been graced with a reply as yet.

Thanks Peter.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
There are three ways to get something done:
	(1) Do it yourself.
	(2) Hire someone to do it for you.
	(3) Forbid your kids to do it.