From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Bert Wesarg" <bert.wesarg@googlemail.com>
Subject: Re: [PATCH] pack-objects: Add runtime detection of online CPU's
Date: Tue, 12 Feb 2008 12:18:57 +0100
Message-ID: <36ca99e90802120318y5099b06cta3f8488dc758f6@mail.gmail.com>
References: <47B156CD.1010209@op5.se>
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Cc: "Git Mailing List" <git@vger.kernel.org>,
	"Junio C Hamano" <gitster@pobox.com>,
	"Nicolas Pitre" <nico@cam.org>
To: "Andreas Ericsson" <ae@op5.se>
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Hi,

On Feb 12, 2008 9:20 AM, Andreas Ericsson <ae@op5.se> wrote:
> +#ifdef THREADED_DELTA_SEARCH
> +# ifdef _SC_NPROCESSORS_ONLN
> +       long ncpus;
> +
> +       if ((ncpus = (long)sysconf(_SC_NPROCESSORS_ONLN)) > 0)
> +               return (int)ncpus;
> +# else
I can't find the right pointer, but for linux it would be more usable
to use sched_getaffinity(). Than you can do thinks like this:

$ taskset 0x3 git gc ...

and you will get 2 cpus, even 4 are online.

Bert