Re: [PATCH] page aging for 2.2.16

[Ed Tomlinson <tomlins@cam.org>]

On Thu, 08 Jun 2000, Neil Schemenauer wrote:
> This patch seems to significantly improve the interactive
> performance of 2.2.16.  Without the patch XMMS and the mouse
> pointer will stop responding for seconds at a time while running
> Bonnie.  With the patch everything is smooth.
> 
> I timed a kernel compile with -j 20 to test the cost of the
> aging.  It does not seem to make a significant difference (3
> seconds slower).  Bonnie reports slightly higher IO figures
> with the patch.  I don't think the change is significant.

I have been running with with 2.2.17pre5 + this patch for the last
12 days with very good results.  The reiserfs guys fixed a block
leak under high load and released 3.5.23.  I want to rebuild my 
kernel.  I was thinking of 2.2.17pre10 + Marcelo Tosatti's merged 
patch which includes

- balance dirty patch which wakes up kflushd at "correct" times. (Andrea)
- GFP-race-fix-2.patch, fixes the free_before_allocate issue without
  hurting other cases. (Andrea)
- wait-dirty.patch, to avoid processes from waiting at dirty buffers while
  there is freeable cache around. (me)
- WRITEA patch, fixes the interactiveness problem under high IO. (me)

along with the page aging stuff.  

Is there a better combo?  
                                                                                  
Ed Tomlinson <tomlins@cam.org>
http://www.cam.org/~tomlins/njpipes.html
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