Andrea Righi wrote:
quoted text
> David Newall wrote:
>   
>> Andrea Righi wrote:
>>     
>>> [I/O-intensive] processes can noticeably impact the system responsiveness
>>> for some time and playing with tasks' priority is not always an
>>> acceptable solution.
>>>   
>>>       
>> Why?
>>
>>     
>
> Well, I mean, we can't use 'nice' to grant less priority for the I/O
> intensive app, because the I/O intensive app itself doesn't need a lot
> of CPU. Instead, the I/O-bound app eats all the available I/O bandwidth,
> that's a different issue.

That's what I was thinking.  Your original, "not always an acceptable
solution," made me wonder if you were referring to something obscure.
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