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Subject: Re: Significant performance hit on recent upgrade
To: freebsd-current@freebsd.org
References: <CANJ8om7SbJZrSVCoEmuF5tP_u9QLF0GbHNFKzuGJmnNvT5_fng@mail.gmail.com>
From: Allan Jude <allanjude@freebsd.org>
Message-ID: <56E359ED.1090106@freebsd.org>
Date: Fri, 11 Mar 2016 18:51:09 -0500
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On 03/11/2016 18:49, Ultima wrote:
> Hello,
> 
>  Recently I upgraded to r296377, and notice a big hit in performance. This
> system in question is a poudriere building system that usually has many
> jails running building around 200-400 pkg per hour for each jail. After the
> upgrade, it is rare to see over 100 pkg per hour built. Possible regression
> on recent commit?
> 
> Previously was running (sorry had git src at the time) 8b372d1(master)
> built around a week ago. Any ideas what maybe causing this? I can provide
> more details if needed, someone in irc also mentioned noticing a hit in
> performance.
> 
> 
> Ultima
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> 

Are you using ZFS? What does your memory utilization look like?
Can you provide the 'Mem' and 'ARC' lines from top(1) while building
packages (ideally, a good 20+ minutes into such a build)?

-- 
Allan Jude