[CentOS] Anyway to ensure SSH availability?

On Thu, 30 Jun 2011, rainer at ultra-secure.de wrote:

>> Steve Barnes wrote:
>
> [...]
>
>> Or maybe having that core root tree on separate HDD and separate HDD
>> controller.
>>
>
>
> Unfortunately, all this does not matter at all.
> The problem is: sshd is swapped out and the system needs to swap-out
> something else first, before it can take sshd back in.

Reduce your chances of it being kicked out into swap as a result of i/o:

sysctl -q vm.swappiness=0

If that improves things, add an appropriate line into sysctl.conf.

jh