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Date:      Sat, 3 Apr 2021 01:45:14 -0400
From:      monochrome <monochrome@twcny.rr.com>
To:        freebsd-current@freebsd.org
Subject:   Re: freebsd 13 ryzen micro stutter
Message-ID:  <a409bac1-06fd-8a7c-7928-1bdd4bd912b9@twcny.rr.com>
In-Reply-To: <20210403082339.4e432021@rimwks.local>
References:  <d793c8b7-e0e2-e0d9-3ecd-923134d15bf3@twcny.rr.com> <20210323101146.18c9a969@bsd64.grem.de> <ED533759-D326-45D5-8AE2-51CB10763A1E@unrelenting.technology> <677da81d7af9781be6b46c7cba4efd05@riseup.net> <54768f44-c110-d58a-1e7b-61843cde754e@codenetworks.net> <9638abfe-fd9e-6855-b3c7-ee796d1c5ce5@codenetworks.net> <2a4dad60-f1b8-8d48-337a-d23893a84f04@selasky.org> <ec0b7ced3143c68a4a0b1bff6dd7e4ac@riseup.net> <20210403082339.4e432021@rimwks.local>

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OP here, I've been running with kern.sched.steal_thresh=1 with no 
stutter since it was originally suggested. I tried these instead and I 
get stutter, maybe a little less but its definitely back.


On 4/3/21 1:23 AM, Rozhuk Ivan wrote:
> I have no micro stutter with default kern.sched.steal_thresh=2, but I have set:
> kern.sched.balance=0			# Enables the long-term load balancer
> kern.sched.balance_interval=1000	# Average period in stathz ticks to run the long-term balancer
> kern.sched.affinity=10000		# Number of hz ticks to keep thread affinity for



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