From nobody Thu Nov 17 17:04:24 2022 X-Original-To: fs@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 4NCmVK6zCqz4hm93 for ; Thu, 17 Nov 2022 17:04:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (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 (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4NCmVK5mrMz3vq1 for ; Thu, 17 Nov 2022 17:04:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1668704665; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; 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Thu, 17 Nov 2022 17:04:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 2AHH4PEw073629 for ; Thu, 17 Nov 2022 17:04:25 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 2AHH4PXg073628 for fs@FreeBSD.org; Thu, 17 Nov 2022 17:04:25 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: fs@FreeBSD.org Subject: [Bug 250323] OpenZFS L2ARC size shrinking over time Date: Thu, 17 Nov 2022 17:04:24 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: crwhipp@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: fs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D250323 --- Comment #3 from crwhipp@gmail.com --- I have observed this on: FreeBSD 13.1-RELEASE-p3 amd64 With a 48G L2ARC configured, after 14 days of uptime on a mostly idle home server, `zfs-stats -L` reports 18G of L2ARC: ------------------------------------------------------------------------ ZFS Subsystem Report Thu Nov 17 10:01:09 2022 ------------------------------------------------------------------------ L2 ARC Summary: (HEALTHY) Low Memory Aborts: 20 Free on Write: 25.03 k R/W Clashes: 3 Bad Checksums: 0 IO Errors: 0 L2 ARC Size: (Adaptive) 18.14 GiB Decompressed Data Size: 30.34 GiB Compression Factor: 1.67 Header Size: 0.15% 46.42 MiB L2 ARC Evicts: Lock Retries: 183 Upon Reading: 1 L2 ARC Breakdown: 13.35 m Hit Ratio: 61.47% 8.21 m Miss Ratio: 38.53% 5.14 m Feeds: 1.21 m L2 ARC Writes: Writes Sent: 100.00% 71.80 k ------------------------------------------------------------------------ Rebooting restores the L2ARC size to it's correct value. --=20 You are receiving this mail because: You are the assignee for the bug.=