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From: Markus Elfring <Markus.Elfring@web.de>
To: Julia Lawall <julia.lawall@inria.fr>,
	Denis Efremov <efremov@linux.com>,
	Coccinelle <cocci@systeme.lip6.fr>
Cc: Michal Marek <michal.lkml@markovi.net>,
	Gilles Muller <Gilles.Muller@lip6.fr>,
	Nicolas Palix <nicolas.palix@imag.fr>,
	kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org,
	Alexander Popov <alex.popov@linux.com>
Subject: Re: [Cocci] Determination of an usage statistic for memory allocation calls
Date: Sun, 18 Oct 2020 18:46:53 +0200
Message-ID: <51716926.XVqqe9kqm5@sonne> (raw)
In-Reply-To: <alpine.DEB.2.22.394.2010181819210.2759@hadrien>

> > Can such facts influence the specification of efficient SmPL disjunctions another bit?
> 
> On my machine, putting the three functions that you have foudn to be the
> most frequent at the end of each disjunction has no impact on the performance.

I propose to reconsider this view.


> So what do you suggest?

1. I would appreciate if you would share more technical details about your test environment
   for a safer comparison.

2. The observed software behaviour can be clarified further, can't it?
   Aspects like the following can trigger corresponding development considerations.
   * “noticable” differences (depending on the run time environment)
   * measurable effects
   * mathematical properties of an algorithm

Regards,
Markus


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Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-16  9:46 [Cocci] [PATCH v8] coccinelle: api: add kfree_mismatch script Markus Elfring
2020-10-16 10:07 ` Julia Lawall
2020-10-16 10:56   ` Markus Elfring
2020-10-18 16:00 ` [Cocci] Determination of an usage statistic for memory allocation calls Markus Elfring
2020-10-18 16:20   ` Julia Lawall
2020-10-18 16:46     ` Markus Elfring [this message]

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