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Date:      Sun, 12 Mar 2017 12:57:01 -0700
From:      Adrian Chadd <adrian.chadd@gmail.com>
To:        Andrew Gallatin <gallatin@cs.duke.edu>
Cc:        Andriy Gapon <avg@freebsd.org>, "freebsd-arch@freebsd.org" <freebsd-arch@freebsd.org>,  Jeff Roberson <jroberson@jroberson.net>
Subject:   Re: UMA_ZONE_CACHESPREAD and uma_zsecond_add
Message-ID:  <CAJ-VmomSPt09BSzRYf1DE74k8jCChuhy83KgSGbe4uZT2hm0Cw@mail.gmail.com>
In-Reply-To: <035f48ea-8722-f697-cc71-cb8ee772e062@cs.duke.edu>
References:  <76a47d9a-da39-75f4-5794-24724d0befc7@FreeBSD.org> <035f48ea-8722-f697-cc71-cb8ee772e062@cs.duke.edu>

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Is there any reason to nuke it right now? Is it preventing other work
from progressing?



-adrian

On 12 March 2017 at 11:55, Andrew Gallatin <gallatin@cs.duke.edu> 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?
>
> Thanks,
>
> Drew
>
>
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