James Bellinger wrote:
2. AppArmor in the default kernels: Ubuntu has it by default already, so Linode is *taking it out* for reasons I do not understand.
It's not a required part of the Linux kernel, so they aren't taking it out: they're not including it. A subtle difference. It does, however, have the potential (if it's anything like SELinux...) to break userlands that don't expect it.
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3. Less jitter: I'm not sure why, but having come from Rackspace where I can consistently get at least 40-70ms, I find that sometimes the ping to my server is upwards of 700 ms, though usually it is a nice low number as well. Don't know why Linode is worse in this respect, perhaps my server just happens to be on the same machine as someone rather IO intensive?

I/O shouldn't impact RTT that much at all, since ICMP replies are handled by the kernel. That is indeed weird. Might be worth firing off an mtr in both directions, and posting them in a new thread. (FWIW, I have not experienced unusually high jitter, outside of normal Internet behaviors.)
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