Re: Results: pre6 vs pre6+zlatko's_patch vs pre5 vs arcavm13

[Steve Bergman <steve@netplus.net>]

Linus Torvalds wrote:

> Can you run pre6+zlatko with just the mm/page_alloc.c one-liner reverted
> to pre5? That is, take pre6+zlatko, and just change
> 
>         try_to_free_pages(gfp_mask, freepages.high - nr_free_pages);
> 
> back to
> 
>         try_to_free_pages(gfp_mask, SWAP_CLUSTER_MAX);
> 

OK, here are the updated results:

'Image test' in 128MB:

pre6+zlatko's_patch     	2:35
and with requested change	3:09
pre6                    	2:27
pre5                    	1:58
arcavm13                	9:13


I also ran the kernel compile test:

In 12MB:
				Elapsed	Maj.	Min.	Swaps
				-----	------	------	-----
pre6+zlatko_patch       	22:14   383206  204482  57823
and with requested change	22:23	378662	198194	51445
pre6                    	20:54   352934  191210  48678
pre5                    	19:35   334680  183732  93427 
arcavm13                	19:45   344452  180243  38977

The change seems to have hurt it in both cases.  What I am seeing on pre6 and
it's derivitives is a *lot* of *swapin* activity.  Pre5 almost exclusively swaps
*out* during the image test, averaging about 1.25MB/sec (spends a lot of time at
around 2000k/sec) with very little swapping in.  All the pre6 derivitives swap
*in* quite heavily during the test.  The 'so' number sometimes drops to 0 for
seconds at a time.  It also looks like pre6 swaps out slightly more overall
(~165MB vs 160MB).

-Steve
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