From owner-freebsd-current@freebsd.org Sat Apr 3 05:45:18 2021 Return-Path: Delivered-To: freebsd-current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 186785C052B for ; Sat, 3 Apr 2021 05:45:18 +0000 (UTC) (envelope-from monochrome@twcny.rr.com) Received: from p-impout001.msg.pkvw.co.charter.net (p-impout010aa.msg.pkvw.co.charter.net [47.43.26.141]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "Client", Issuer "CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4FC5VP15Bxz3DcM for ; Sat, 3 Apr 2021 05:45:16 +0000 (UTC) (envelope-from monochrome@twcny.rr.com) Received: from [192.168.13.11] ([45.47.45.55]) by cmsmtp with ESMTP id SZ5ulSNcabBamSZ5vlSkMk; Sat, 03 Apr 2021 05:45:15 +0000 X-Authority-Analysis: v=2.3 cv=CunBjUwD c=1 sm=1 tr=0 a=oJ4f3sEZGTo/oTi6ieWQlw==:117 a=oJ4f3sEZGTo/oTi6ieWQlw==:17 a=IkcTkHD0fZMA:10 a=OKjKyBQQ0JMl1lNpmiEA:9 a=QEXdDO2ut3YA:10 Subject: Re: freebsd 13 ryzen micro stutter To: freebsd-current@freebsd.org References: <20210323101146.18c9a969@bsd64.grem.de> <677da81d7af9781be6b46c7cba4efd05@riseup.net> <54768f44-c110-d58a-1e7b-61843cde754e@codenetworks.net> <9638abfe-fd9e-6855-b3c7-ee796d1c5ce5@codenetworks.net> <2a4dad60-f1b8-8d48-337a-d23893a84f04@selasky.org> <20210403082339.4e432021@rimwks.local> From: monochrome Message-ID: Date: Sat, 3 Apr 2021 01:45:14 -0400 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:78.0) Gecko/20100101 Thunderbird/78.9.0 MIME-Version: 1.0 In-Reply-To: <20210403082339.4e432021@rimwks.local> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-CMAE-Envelope: MS4wfF7IVUo9RfSaMwvMYBSCzuDBQ6RTbzPaFKMjc6U5SpVuHzbrTRD7pYQ2zU1NDoO0kDowpxcpJnpeiLP32+II1YF46LYCbrexcOCoLon6ldsnfbOg9Akx zRTPwZDnM9Rcm/0TRLlqKdKth2bBry6NhXbcDcnoDyrZrXtv8TtDvVS02vG/eWZfmfk3Y81O51x0vw== X-Rspamd-Queue-Id: 4FC5VP15Bxz3DcM X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of monochrome@twcny.rr.com designates 47.43.26.141 as permitted sender) smtp.mailfrom=monochrome@twcny.rr.com X-Spamd-Result: default: False [-3.30 / 15.00]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; RECEIVED_SPAMHAUS_PBL(0.00)[45.47.45.55:received]; FROM_HAS_DN(0.00)[]; RWL_MAILSPIKE_GOOD(0.00)[47.43.26.141:from]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:47.43.26.0/24]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; DMARC_NA(0.00)[rr.com]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[47.43.26.141:from:127.0.2.255]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; RBL_DBL_DONT_QUERY_IPS(0.00)[47.43.26.141:from]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; RCVD_IN_DNSWL_NONE(0.00)[47.43.26.141:from]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; R_DKIM_NA(0.00)[]; ASN(0.00)[asn:40294, ipnet:47.43.24.0/21, country:US]; MIME_TRACE(0.00)[0:+]; MAILMAN_DEST(0.00)[freebsd-current]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 03 Apr 2021 05:45:18 -0000 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