Is there any downside, or benefit, to moving cache to tmpfs?

[tymanthius 18]

I will have 16GB of mem as of this PM.  I'm already moving /tmp (my temp partition) to tmpfs.  

 

Would there be any downside to moving the cache dir there as well?  

 

I reboot around once a week or less unless I'm fiddling with things too much.

 

I just don't really understand how cache is used here, so I'm not sure if that would be a benefit or if it's a bit more 'static' and shouldn't be wiped on reboot.

[Luke 42077]

if you are constantly wiping the cache you will notice some increased cpu usage as clients request images in various sizes. the server performs the re-sizing on the fly and caches the results.

[tymanthius 18]

Ok, thanks.  As my 'normal' server blew it's mbrd last night, and I swapped in my main pc that wouldn't be a problem. Went from dual core at 2.6 to 8 core at 3.6.  Fun.  

 

So I may do that w/ this one, then re-adjust as needed.