From nobody Mon Jul 15 21:35:58 2024 X-Original-To: freebsd-questions@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 4WNFr349SBz5QDbv for ; Mon, 15 Jul 2024 21:36:03 +0000 (UTC) (envelope-from freebsd-questions@umpquanet.com) Received: from sfo.umpquanet.com (sfo.umpquanet.com [104.245.33.249]) (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 "umpquanet.com", Issuer "R11" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4WNFr31n5gz4qfr for ; Mon, 15 Jul 2024 21:36:02 +0000 (UTC) (envelope-from freebsd-questions@umpquanet.com) Authentication-Results: mx1.freebsd.org; none Received: from sfo.umpquanet.com (localhost [127.0.0.1]) by sfo.umpquanet.com (8.16.1/8.16.1) with ESMTPS id 46FLa0lu034633 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Mon, 15 Jul 2024 14:36:00 -0700 (PDT) (envelope-from freebsd-questions@umpquanet.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=umpquanet.com; s=20231023; t=1721079360; bh=a03BNhntlOnH41bBK5SCVXNDRDCtoUhPdasID8n0fno=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=YtjynH10HPNhv2tnJ1Xz8JvYvoejHfT76UZZR+GH5CF9/CKjkj7C2jGr/1kjiUwq1 TRMD8qXVxsobGkFVeQwW512s6MnoiNqviwhoahrz5/AQuy643d7X1VRLbygj5KEBKj bENOSVgQLgFEC6voOZK2iWy4zEAYAMl9D8jIiQ3BILkbbmQMKhu045u03CJY8rDWJB v3LoCPufw5MLhPEY+IdxL2KP7ALM7sewlmVv2n952DEdNPl80qzf95tuYc5gdcRx7V PXWk2z9jcgw3BiWnQ798HDUQ186a5Kj904PinSFoBrkhdpTYHI221wXWUcdsB3E2yZ /G+ozEdBxaoEw== Received: (from james@localhost) by sfo.umpquanet.com (8.16.1/8.16.1/Submit) id 46FLZwL0034628; Mon, 15 Jul 2024 14:35:58 -0700 (PDT) (envelope-from freebsd-questions@umpquanet.com) X-Authentication-Warning: sfo.umpquanet.com: james set sender to freebsd-questions@umpquanet.com using -f Date: Mon, 15 Jul 2024 14:35:58 -0700 From: Jim Long To: Dan Langille Cc: RW via freebsd-questions Subject: Re: Unable to limit memory consumption with vfs.zfs.arc_max Message-ID: References: <4299f196-1fbe-4590-8668-d023d7044e8d@sentex.net> <3d2f7913-b91d-4d00-a9b4-f37cf1032fc0@app.fastmail.com> List-Id: User questions List-Archive: https://lists.freebsd.org/archives/freebsd-questions List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-questions@freebsd.org Sender: owner-freebsd-questions@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:6364, ipnet:104.245.32.0/23, country:US] X-Rspamd-Queue-Id: 4WNFr31n5gz4qfr Heavens, no. I attached the graph as proof of what ARC is using (green) and what limit is set (blue). The ARC used frequently sails right past the 4G limit. It seems the daily periodic job is one task which can push the kernel to violate the vfs.zfs.arc_max limitation. On Mon, Jul 15, 2024 at 04:59:00PM -0400, Dan Langille wrote: > On Mon, Jul 15, 2024, at 4:41 PM, Jim Long wrote: > > As Bugs Bunny often said, "What a maroon!" > > > > Here's the attached MRTG graph. > > So, fixed? > > -- > Dan Langille > dan@langille.org