From nobody Sun Mar 20 11:43:56 2022 X-Original-To: freebsd-stable@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4ABFB1A324AA for ; Sun, 20 Mar 2022 11:44:07 +0000 (UTC) (envelope-from mike@sentex.net) Received: from smarthost1.sentex.ca (smarthost1.sentex.ca [IPv6:2607:f3e0:0:1::12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "smarthost1.sentex.ca", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KLwrQ464Fz4Qr8 for ; Sun, 20 Mar 2022 11:44:06 +0000 (UTC) (envelope-from mike@sentex.net) Received: from pyroxene2a.sentex.ca (pyroxene19.sentex.ca [199.212.134.19]) by smarthost1.sentex.ca (8.16.1/8.16.1) with ESMTPS id 22KBhvKP058861 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Sun, 20 Mar 2022 07:43:57 -0400 (EDT) (envelope-from mike@sentex.net) Received: from [IPV6:2607:f3e0:0:4:7416:8ada:3120:2eaf] ([IPv6:2607:f3e0:0:4:7416:8ada:3120:2eaf]) by pyroxene2a.sentex.ca (8.16.1/8.15.2) with ESMTPS id 22KBhutW096489 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NO); Sun, 20 Mar 2022 07:43:57 -0400 (EDT) (envelope-from mike@sentex.net) Message-ID: <9b2935cd-5f70-d2a2-a328-004fa3e7b3f8@sentex.net> Date: Sun, 20 Mar 2022 07:43:56 -0400 List-Id: Production branch of FreeBSD source code List-Archive: https://lists.freebsd.org/archives/freebsd-stable List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-stable@freebsd.org X-BeenThere: freebsd-stable@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: nfsd becomes slow when machine CPU usage is at or over 100% on STABLE/13 Content-Language: en-US To: Yoshihiro Ota , Rick Macklem Cc: freebsd-stable References: <20220309034601.ea3135e31aec3ffb2623f145@j.email.ne.jp> <20220318211850.67b77d43b3a02043c3819bf3@j.email.ne.jp> From: mike tancsa In-Reply-To: <20220318211850.67b77d43b3a02043c3819bf3@j.email.ne.jp> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.84 X-Rspamd-Queue-Id: 4KLwrQ464Fz4Qr8 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of mike@sentex.net designates 2607:f3e0:0:1::12 as permitted sender) smtp.mailfrom=mike@sentex.net X-Spamd-Result: default: False [-2.96 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FREEFALL_USER(0.00)[mike]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+ip6:2607:f3e0::/32]; NEURAL_HAM_LONG(-0.56)[-0.556]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[sentex.net]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; NEURAL_HAM_SHORT(-1.00)[-1.000]; MLMMJ_DEST(0.00)[freebsd-stable]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:11647, ipnet:2607:f3e0::/32, country:CA]; RCVD_TLS_ALL(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_IN_DNSWL_LOW(-0.10)[199.212.134.19:received] X-ThisMailContainsUnwantedMimeParts: N On 3/18/2022 9:18 PM, Yoshihiro Ota wrote: > I had built several versions between releng/13.0 branch point to stable/13 (before releng/13.1 was created) and all of them had such performance degrade. > > I started suspecting stable debug options and thus built releng/13.1 and tested. > I don't see NFS slowdown unlike stable/13. > releng/13.0 and releng/12.2 were also fine. Hi,     I would think there is very little difference (if any) between releng/13.1 and stable/13 right now.  Are you sure stable/13 suffers from this issue you are seeing ?     ---Mike