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Subject: Re: UMA_ZONE_CACHESPREAD and uma_zsecond_add
To: Andrew Gallatin <gallatin@cs.duke.edu>, freebsd-arch@FreeBSD.org,
 Jeff Roberson <jroberson@jroberson.net>
References: <76a47d9a-da39-75f4-5794-24724d0befc7@FreeBSD.org>
 <035f48ea-8722-f697-cc71-cb8ee772e062@cs.duke.edu>
From: Andriy Gapon <avg@FreeBSD.org>
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Date: Mon, 13 Mar 2017 14:32:11 +0200
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On 12/03/2017 20:55, Andrew Gallatin wrote:
> On 03/08/2017 10:56, Andriy Gapon wrote:
>>
>> First, the history of UMA_ZONE_CACHESPREAD and uma_zsecond_add():
>> https://lists.freebsd.org/pipermail/freebsd-arch/2008-December/008800.html
>>
>> Now, more than 8 years after those features were introduced, we still don't have
>> a single in-tree consumer for them.
>> Does anyone use those features out of tree?
>> Does anyone still have plans to make use of them?
>> Will anyone get sad if those features get garbage collected?
> 
> This is something that I keep getting suggestions to try at Netflix
> on our 100G boxes.  From the description, it really seems like
> it might help us to have a few data types allocated like this.
> 
> Can you give me, say, one month to look into this before axing
> it?

Sure!  That's exactly why I wanted to ask everyone first.
I am not itching to remove that code :)

-- 
Andriy Gapon