linux-kernel - Re: Xeon 5500 series support in kernel

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <877hyrbeon.fsf@basil.nowhere.org>
Date:	Thu, 02 Jul 2009 11:46:16 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	xb <xavier.bru@...l.net>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Xeon 5500 series support in kernel

xb <xavier.bru@...l.net> writes:

> I wonder if there are specific kernel configuration parameters that
> allow to optimize performances on the recent Xeon 5500 processors (aka
> Nehalem).

The most important optimization is to use a 64bit kernel with NUMA
support enabled (even if you use 32bit userland)

> In particular, should we set CONFIG_GENERIC_CPU or CONFIG_MCORE2 on
> such processors ?

The kernel doesn't really care about compiler optimizations,
so it shouldn't make any difference. CONFIG_GENERIC_CPU is fine.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/