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Date: Tue, 28 Feb 2012 10:43:46 +0100 (CET)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Andriy Gapon <avg@freebsd.org>
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Cc: freebsd-hackers@freebsd.org, Grzegorz Kulewski <grzegorz@kulewski.pl>
Subject: Re: improving VM - questions
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>> +++ swap_pager.c        2012-02-25 13:19:51.000000000 +0100
>> @@ -119,7 +119,7 @@
>>  * The 32-page limit is due to the radix code (kern/subr_blist.c).
>>  */
>> #ifndef MAX_PAGEOUT_CLUSTER
>> -#define MAX_PAGEOUT_CLUSTER 16
>> +#define MAX_PAGEOUT_CLUSTER 256
>> #endif
> [snip]
>> but swap_pager.c patch seems not to work. i observe 64kB pageouts, no more.
>>
>> what is wrong in it?
>
> Could there be a problem because of what the MAX_PAGEOUT_CLUSTER comment says?

right. but still 32 pages is 128kB, but i see 64kB I/Os in systat/vmstat

>
> -- 
> Andriy Gapon
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