Re: NR_TASKS Cost

Sam Roberts (sam@cogent.ca)
Tue, 01 Jun 1999 13:48:00 -0400

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Maybe in reply to: Thiago Madeira de Lima: "NR_TASKS Cost"

I'm no expert, but from my reading of sched.c, the memory cost is
4 * NR_TASKS, since NR_TASKS is used to make an array of *pointers*
to task structures.

In other words, hardly any at all, except that you may make more
tasks than you're memory and swap can handle efficiently...

However, other kernel code may use NR_TASKS to allocate other resources.

Sam

Thiago Madeira de Lima wrote:
>
> What is the cost (memory/cpu/etc) when increasing the NR_TASKS in
> a machine?
>
> Thanks.
> Thiago
>
>
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Maybe in reply to: Thiago Madeira de Lima: "NR_TASKS Cost"