improving VM - questions
Wojciech Puchar
wojtek at wojtek.tensor.gdynia.pl
Tue Feb 28 09:50:41 UTC 2012
>> +++ 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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