From: Andreas Ericsson <ae@op5.se>
To: Bert Wesarg <bert.wesarg@googlemail.com>
Cc: Git Mailing List <git@vger.kernel.org>,
Junio C Hamano <gitster@pobox.com>, Nicolas Pitre <nico@cam.org>
Subject: Re: [PATCH] pack-objects: Add runtime detection of online CPU's
Date: Tue, 12 Feb 2008 13:21:47 +0100 [thread overview]
Message-ID: <47B18F5B.7020106@op5.se> (raw)
In-Reply-To: <36ca99e90802120318y5099b06cta3f8488dc758f6@mail.gmail.com>
Bert Wesarg wrote:
> 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.
>
Since you can do roughly the same by saying "git pack-objects --threads=2",
I'd rather not add a GNU/Linux specific hack for this.
--
Andreas Ericsson andreas.ericsson@op5.se
OP5 AB www.op5.se
Tel: +46 8-230225 Fax: +46 8-230231
next prev parent reply other threads:[~2008-02-12 12:22 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-12 8:20 [PATCH] pack-objects: Add runtime detection of online CPU's Andreas Ericsson
2008-02-12 8:27 ` Shawn O. Pearce
2008-02-12 8:49 ` Johannes Sixt
2008-02-12 11:18 ` Bert Wesarg
2008-02-12 12:21 ` Andreas Ericsson [this message]
2008-02-12 14:52 ` Michael Hendricks
2008-02-12 15:44 ` Brandon Casey
2008-02-23 2:11 ` Brandon Casey
2008-02-23 8:18 ` Andreas Ericsson
[not found] ` <1203732369-30314-1-git-send-email-casey@nrlssc.navy.mil>
2008-02-23 2:12 ` [PATCH] pack-objects: Print a message describing the number of threads for packing Brandon Casey
2008-02-26 7:49 ` Jeff King
2008-02-26 8:00 ` Junio C Hamano
2008-02-26 8:06 ` Jeff King
2008-02-26 9:19 ` Junio C Hamano
2008-02-26 9:33 ` Jeff King
2008-02-26 9:40 ` Andreas Ericsson
2008-02-26 15:53 ` Brandon Casey
2008-02-26 17:05 ` Nicolas Pitre
2008-02-26 21:25 ` Jeff King
2008-02-26 21:21 ` Jeff King
2008-02-26 22:50 ` Brandon Casey
2008-02-26 23:04 ` Jeff King
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