From nobody Tue Nov 30 14:55:42 2021 X-Original-To: freebsd-hackers@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 7D1A418AD63E for ; Tue, 30 Nov 2021 14:55:51 +0000 (UTC) (envelope-from george+freebsd@m5p.com) Received: from mailhost.m5p.com (mailhost.m5p.com [74.104.188.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "m5p.com", Issuer "R3" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4J3QJQ4CB2z4vTv for ; Tue, 30 Nov 2021 14:55:50 +0000 (UTC) (envelope-from george+freebsd@m5p.com) Received: from [IPV6:2001:470:1f07:15ff::26] (court.m5p.com [IPv6:2001:470:1f07:15ff:0:0:0:26]) (authenticated bits=0) by mailhost.m5p.com (8.16.1/8.15.2) with ESMTPSA id 1AUEtg8L013074 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO) for ; Tue, 30 Nov 2021 09:55:48 -0500 (EST) (envelope-from george+freebsd@m5p.com) Message-ID: <8a3b989f-cdeb-7371-6d75-caf14a1b6050@m5p.com> Date: Tue, 30 Nov 2021 09:55:42 -0500 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:91.0) Gecko/20100101 Thunderbird/91.3.1 Subject: Re: Call for Foundation-supported Project Ideas Content-Language: en-US To: freebsd-hackers@freebsd.org References: <861r36xzpe.fsf@phe.ftfl.ca> From: George Mitchell In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=0.2 required=10.0 tests=HELO_MISC_IP,HELO_NO_DOMAIN, NICE_REPLY_A autolearn=no autolearn_force=no version=3.4.5 X-Spam-Checker-Version: SpamAssassin 3.4.5 (2021-03-20) on mattapan.m5p.com X-Rspamd-Queue-Id: 4J3QJQ4CB2z4vTv X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of george@m5p.com designates 74.104.188.4 as permitted sender) smtp.mailfrom=george@m5p.com X-Spamd-Result: default: False [-0.90 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+a]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; DMARC_NA(0.00)[m5p.com]; NEURAL_HAM_SHORT(-0.29)[-0.294]; NEURAL_SPAM_LONG(0.39)[0.386]; NEURAL_HAM_MEDIUM(-0.70)[-0.696]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:701, ipnet:74.104.0.0/16, country:US]; TAGGED_FROM(0.00)[freebsd]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-ThisMailContainsUnwantedMimeParts: N On 11/30/21 06:53, Stefan Esser wrote: > Am 23.11.21 um 23:41 schrieb Joseph Mingrone: >> Hello FreeBSD community, >> >> The Foundation is seeking suggestions for new projects to support. What >> gaps in the Project are not being addressed by the broader community? > > The "new" ULE scheduler has a number of well-known issues, which leads > to the "old" BSD scheduler giving better performance on many systems > and loads, but is based on concepts that made sense in pre-SMP times. > > [... a collection of highly salient points about both schedulers ...] I'll second the recommendation to take a hard look at FreeBSD scheduling and to consider a brand new one. At the same time, it would be most helpful if the choice of scheduler were a boot-time tunable. -- George > Regards, STefan >