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From: Wolfgang Denk <wd@denx.de>
To: Scott Wood <scottwood@freescale.com>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] [RFC] Emulate "lwsync" to run standard user land on e500 cores
Date: Sun, 27 Oct 2013 11:29:19 +0100	[thread overview]
Message-ID: <20131027102919.794493811DD@gemini.denx.de> (raw)
In-Reply-To: <1382697373.3926.36.camel@aoeu.buserror.net>

Dear Scott,

In message <1382697373.3926.36.camel@aoeu.buserror.net> you wrote:
>
> Has anyone measured how much this slows things down with a typical
> userspace?

In the applications I found to trigger this issue the number of traps
is so small that I can't even reliably measure any difference.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
When it is incorrect, it is, at least *authoritatively* incorrect.
                                    - Hitchiker's Guide To The Galaxy

  parent reply	other threads:[~2013-10-27 10:36 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-18  7:38 [PATCH] [RFC] Emulate "lwsync" to run standard user land on e500 cores Wolfgang Denk
2013-10-18 16:38 ` Scott Wood
2013-10-18 18:50   ` Wolfgang Denk
2013-10-23  5:07 ` Kumar Gala
2013-10-23 10:15   ` Scott Wood
2013-10-24  4:06     ` Kumar Gala
2013-10-24  9:45       ` Benjamin Herrenschmidt
2013-10-24  9:55         ` Kumar Gala
2013-10-24 21:05           ` James Yang
2013-10-25  4:12             ` Kumar Gala
2013-10-25  4:49               ` Yang James-RA8135
2013-10-25  9:58                 ` David Laight
2013-10-25 13:02                   ` Benjamin Herrenschmidt
2013-10-26  7:26                     ` Kumar Gala
2013-10-25 15:13                   ` James Yang
2013-10-25 10:36           ` Scott Wood
2013-10-25 15:25             ` James Yang
2013-10-28 17:52               ` Scott Wood
2013-10-27 10:29             ` Wolfgang Denk [this message]
2013-10-27 10:25           ` Wolfgang Denk
2013-10-24 10:18       ` David Laight

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