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Subject: Re: FreeBSD 11.1 Beta 2 ZFS performance degradation on SSDs
To: Karl Denninger <karl@denninger.net>,
 "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org>
References: <2d8a525e5355406aa7b8bf6690101008@DM2PR58MB013.032d.mgd.msft.net>
 <4276a57b-5974-0d4b-c535-ea11c491b46f@denninger.net>
From: Mike Tancsa <mike@sentex.net>
Organization: Sentex Communications
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Date: Tue, 20 Jun 2017 14:52:59 -0400
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On 6/20/2017 1:58 PM, Karl Denninger wrote:
> 
> I suspicious of a drive firmware interaction with your I/O pattern; SSDs
> are somewhat-notorious for having that come up under certain workloads
> that involve a lot of writes.

I wonder repeating the tests with plain old hard drives would show the
same behavior ?

	---Mike


-- 
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Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet services since 1994 www.sentex.net
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