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SubjectRe: swapping and the value of /proc/sys/vm/swappiness
>> > For HPC, maybe. For a fileserver, it might be far too little. That's the
>> > trouble ... it's all dependant on the workload. Personally, I'd prefer
>> > to get rid of manual tweakables (which are a pain in the ass in the field
>> > anyway), and try to have the kernel react to what the customer is doing.
>>
>> Agreed. Many of these things should be self-tunable pretty
>> easily, too...
>
> I know this has been discussed before, but could a userspace daemon which
> autotunes the tweakables do a better job wrt. to adapting the kernel
> behaviour depending on the workload? Just like these days we have
> irqbalance instead of a in-kernel "irq balancer". It's a alternative
> worth of look at?

I really don't see any point in pushing the self-tuning of the kernel out
into userspace. What are you hoping to achieve?

M.


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