Linux KVM Improvements

Yeehaw! One of the biggest concerns I've had with Linux KVM (qemu-whatever-whatever) was the some of the latency in disk and network I/O. But in EL 6.4 and I imagine some of the updates to EL 6.3 there have been some remarkable improvements. I don't have any benchmarks for you all, this is more of a 'it just feels sexier' moment.

Yes, I said sexier.. god dammit, I need more of a social life, eh?

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I thought you knew..

Sorry I called you stupid, I thought you knew..

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Clearing Cached RAM In Linux

As most of you already know, when you look at your memory statistics in Linux, much of your RAM is 'cached'. This is normal and a behavior that enhances the overall performance of your system. But sometimes for the sake of OCD, you may want to flush your system's memory cache to get a better perspective of what's /really/ 'free'.

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Tunnelbroker He.net IPv6 rDNS Delegation

I've never setup IPv6 rDNS (PTR entries) before.. so I thought I'd briefly share what I did.

First I had to tell He.net who to delegate the rDNS to.. so I set it to my two DNS instances.

rDNS He.net Delegation

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