From nobody Wed Mar 22 22:57:08 2023 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 4PhkPv47RHz41QGY for ; Wed, 22 Mar 2023 22:57:23 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: from mail-ed1-x533.google.com (mail-ed1-x533.google.com [IPv6:2a00:1450:4864:20::533]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4PhkPt53r0z3rvS for ; Wed, 22 Mar 2023 22:57:22 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=bsdimp-com.20210112.gappssmtp.com header.s=20210112 header.b=zYU4hzHx; spf=none (mx1.freebsd.org: domain of wlosh@bsdimp.com has no SPF policy when checking 2a00:1450:4864:20::533) smtp.mailfrom=wlosh@bsdimp.com; dmarc=none Received: by mail-ed1-x533.google.com with SMTP id r11so79348021edd.5 for ; Wed, 22 Mar 2023 15:57:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20210112.gappssmtp.com; s=20210112; t=1679525840; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=pgBIm4Aw9LZRBdPUn+cHEy4hIxCSt9kQ6AfUHtc+1ic=; b=zYU4hzHxd0Z5hWh1B/1AhaMwVx1F9t+aiZP6xlncLWKeO5RMtIdWD50WGFEgZUQK0V f28EMT5Ivevg0TDFUpdiJc+S+J5u0Ei6TRertftTxFG/aY6XBMNz6VDWqquKoVqnq6s+ 3gWO+LsIc7kI9ViXD9qJYDCPExU8mn5JlPviza2Edp1eOy+xVvJ7Nq//N+uJVfCylh5u syvtOHliXWtHElez2+pq8qJIbb7H+eO4aHMi3VkFOJjYM8TxgeghWXSJAJ0406CEZ0Ab agnXomfTE/IJaMkChPDlcR1bojvJILIhAxy7h+GBfJAai0SUWHsqQCWtrF6EtXo0XNbY 8h7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679525840; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=pgBIm4Aw9LZRBdPUn+cHEy4hIxCSt9kQ6AfUHtc+1ic=; b=w8d5VQ2ufR8PqUPF21qG0dPIF4bPTpFJng2mbNhFmwvQr4UJ2MhiSZq3XPHVba13Rh ostxZTSjlkD7AqfOwoZyboLlA4YLHKDdjOCDi3J/Y76xSEB5MkY6ziwT73BNFjN1L1rY jthaykRnmO8BrABaOXykfTg3Cf72Rg0CJSSxvqIpNKKQmIRfG7jV5b6KnpYB/mfZKi/Y 6Go261ZjcXHSGXhR+2CpvANC/IvsBIUOud2HT8Tue8PkM44TaotkLv1gjj+uLlqgjNma saPj/y2w3e3xlSUIhe9E/HHGJlCzZK4Cg0ZouFJGL4cZ73eLeAyoeSksWDgPGEY8Gp/t /1wg== X-Gm-Message-State: AO0yUKUiVlke28l4nvATg8qntTqLeHd1FuhqsTD1KzbrLo02/r58rhBe eelw3aJVkKRBR0Zh8gdqZ55GKO1NVqm3AmwAbYhBWw== X-Google-Smtp-Source: AK7set9hHxhiFYEWEglB6FT0+cvncB7tH07EZJ5WT5bFHSeYl2aBokx/xnVPhsNcNCGb/7g1ptiL0lmMkDDWcU9oHc0= X-Received: by 2002:a50:a698:0:b0:4fc:e9ef:e033 with SMTP id e24-20020a50a698000000b004fce9efe033mr4273642edc.7.1679525839672; Wed, 22 Mar 2023 15:57:19 -0700 (PDT) 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 References: <6BD317F2-7EDD-45C0-9DC9-5B94C1BBB8E1.ref@yahoo.com> <6BD317F2-7EDD-45C0-9DC9-5B94C1BBB8E1@yahoo.com> <952d9795-19dc-8ad1-bb75-5c556ca6795a@m5p.com> In-Reply-To: <952d9795-19dc-8ad1-bb75-5c556ca6795a@m5p.com> From: Warner Losh Date: Wed, 22 Mar 2023 16:57:08 -0600 Message-ID: Subject: Re: Periodic rant about SCHED_ULE To: George Mitchell Cc: Mark Millard , FreeBSD Hackers Content-Type: multipart/alternative; boundary="00000000000010aba205f78515c9" X-Spamd-Result: default: False [-3.00 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; FORGED_SENDER(0.30)[imp@bsdimp.com,wlosh@bsdimp.com]; R_DKIM_ALLOW(-0.20)[bsdimp-com.20210112.gappssmtp.com:s=20210112]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; R_SPF_NA(0.00)[no SPF record]; RCVD_TLS_LAST(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::533:from]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_CC(0.00)[yahoo.com,freebsd.org]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; ARC_NA(0.00)[]; TO_DN_ALL(0.00)[]; FROM_NEQ_ENVFROM(0.00)[imp@bsdimp.com,wlosh@bsdimp.com]; RCPT_COUNT_THREE(0.00)[3]; FROM_HAS_DN(0.00)[]; DKIM_TRACE(0.00)[bsdimp-com.20210112.gappssmtp.com:+]; TAGGED_RCPT(0.00)[freebsd]; DMARC_NA(0.00)[bsdimp.com]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-Rspamd-Queue-Id: 4PhkPt53r0z3rvS X-Spamd-Bar: -- X-ThisMailContainsUnwantedMimeParts: N --00000000000010aba205f78515c9 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, Mar 22, 2023 at 1:41=E2=80=AFPM George Mitchell wrote: > service dnetc start > I am literally running "make buildworld" with no additional options. > > So what are the results for make buildworld -j $(sysctl -n hw.ncpu )? ULE scales much better, but when there's too little to do it can make poor choices. ULE is better locked and don't fall over on high core count systems like BSD does at moderate load. Warner --00000000000010aba205f78515c9 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


=
On Wed, Mar 22, 2023 at 1:41=E2=80=AF= PM George Mitchell <george+f= reebsd@m5p.com> wrote:
service dnetc start
I am literally running "make buildworld" w= ith no additional options.


So what = are the results for make buildworld -j $(sysctl -n hw.ncpu )?
ULE scales much better, but when there's too little to do i= t can make poor choices.

ULE is better locked and = don't fall over on high core count systems like BSD does at moderate lo= ad.

Warner
--00000000000010aba205f78515c9--