Strategy for large cache sets

Skye Poier Nott skye at
Tue Jul 1 21:13:44 CEST 2008

Thanks, that was my hunch.  I'll let you know how it goes when I have  
some performance metrics.


On 1-Jul-08, at 11:24 AM, Poul-Henning Kamp wrote:

> In message <11FDA9BC-9FA7-4F6A-BA49-F7EB3E3461E5 at>, Skye Poier  
> Nott writes
> :
>> I want to deploy Varnish with very large cache sizes (200GB or more)
>> for large, long lived file sets.  Is it more efficient to use large
>> swap or large mmap in this scenario?
> We have no real-world experience with content of that size, so
> the answer is: we don't know.
> Off the bat, I would think files would be better, for exactly the
> reson you cite: the swap management is pretty thirsty after metadata.
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by  
> incompetence.
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