Re: Heads up

From: Conrad Meyer <cem_at_FreeBSD.org>
Date: Fri, 15 Apr 2016 09:22:02 -0700
Max,

If you implement a new IO scheduler you can name it whatever you like.
"NG" isn't any more meaningful than "Netflix."

Best,
Conrad

On Fri, Apr 15, 2016 at 9:13 AM, Maxim Sobolev <sobomax_at_freebsd.org> wrote:
> Great, work Warner, thanks! Small note, though. The CAM_IOSCHED_NETFLIX
> seems like a quite poor name for a kernel option. IMHO there is no good
> reason for polluting it with the name of the company that sponsored the
> development. I don't think we have any precedents of doing this unless the
> option is related to a piece of hardware that the company makes, and it's
> not the case here. Apart from "coolness" factor as far as I understand that
> _NETFLIX suffix does not give any tangible benefit for anybody reading
> kernel config and trying to understand what this option actually does.
> CAM_IOSCHED_SSDNG or something would be better IMHO. Just my $0.02.
>
> -Max
>
> On Thu, Apr 14, 2016 at 3:42 PM, Warner Losh <imp_at_bsdimp.com> wrote:
>
>> The CAM I/O scheduler has been committed to current. This work is described
>> in https://people.freebsd.org/~imp/bsdcan2015/iosched-v3.pdf though the
>> default scheduler doesn't change the default (old) behavior.
>>
>> One possible issue, however, is that it also enables NCQ Trims on ada SSDs.
>> There are a few rogue drives that claim support for this feature, but
>> actually implement data corrupt instead of queued trims. The list of known
>> rogues is believed to be complete, but some caution is in order.
>>
>> Warner
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Received on Fri Apr 15 2016 - 14:39:49 UTC

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