[Linux-cluster] FS Block Size Limit

Mike Fedyk mfedyk at matchmail.com
Fri Sep 3 19:43:57 UTC 2004


Ken Preslan wrote:

>On Fri, Sep 03, 2004 at 12:15:30PM -0700, Mike Fedyk wrote:
>  
>
>>>Linux filesystems can't have block sizes greater than the machine's
>>>page size.  For x86 and x86_64 that's 4096 bytes.  I've seen 16k pages
>>>on a IA64 box, so you can go larger there.
>>>
>>>      
>>>
>>I remember some threads on LKML about larger page sizes on x86.
>>
>>Not sure on the current status, but you'll want to look into "page cluster".
>>    
>>
>
>There are huge pages, meaning you can configure some subset of the pages
>in a system to be a lot bigger than default (4MB on x86 boxes).  I don't
>think that helps filesystem block sizes any.  Or were you thinking of
>something else?
>
Yes, I'm thinking of something else.




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