From: Anton Blanchard <anton@samba.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org, paulus@samba.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: Re: [PATCH] powerpc/mm: Add trace point for tracking hash pte fault
Date: Mon, 2 Feb 2015 21:26:07 +1100 [thread overview]
Message-ID: <20150202212607.7585dedb@kryten> (raw)
In-Reply-To: <1422425467.11009.2.camel@ellerman.id.au>
Hi,
> > ebizzy with -S 30 -t 1 -P gave
> > 13627 records/s -> Without patch
> > 13546 records/s -> With patch with tracepoint disabled
>
> OK. So that's about -0.6%. Are we happy with that? I'm not sure.
>
> Can you do a few more runs and see if that's a stable result.
Surprisingly large. Is CONFIG_JUMP_LABEL enabled? That should reduce the
tracepoint to just a nop.
Anton
next prev parent reply other threads:[~2015-02-02 10:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-20 11:35 [PATCH] powerpc/mm: Add trace point for tracking hash pte fault Aneesh Kumar K.V
2015-01-21 3:07 ` Michael Ellerman
2015-01-21 8:45 ` Aneesh Kumar K.V
2015-01-28 6:11 ` Michael Ellerman
2015-02-02 10:26 ` Anton Blanchard [this message]
2015-02-02 16:21 ` Aneesh Kumar K.V
2015-02-02 22:01 ` Anton Blanchard
2015-02-03 3:07 ` Aneesh Kumar K.V
2015-02-02 16:12 ` Aneesh Kumar K.V
2015-04-02 8:44 ` Aneesh Kumar K.V
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