Re: [Xen-devel] Xen and Adaptec (formerly DPT) SmartRAID V Controller (rev 01)

[Brian Wolfe <brianw@xxxxxxxxxxxx>]

Yes, this creates the optimal CPU load. at any one time two fo the three
should always be compiling while the third is doing reads/writes to the
filesystem.

More than #cpu+1 and you end up with procs waiting for cpu time. Less
and yoiu leave CPU time idle.

On a UP machine doing j > 1 actually slows things down due to scheduling
conflicts.

On Wed, 2004-12-01 at 16:21 +0100, Jan Kundrát wrote:
> Martin Maney wrote:
> > But slowly, which
> > reminds me to ask if the Xen build has a toggle for using both of the
> > CPUs - on a single PII/450 the pair of kernels took around 50 minutes.
>
> `make -j3 vmlinuz`?
> I read somewhere that the number should be number_of_cpus + 1.
>
>
>
>
>
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