From nobody Tue Feb 3 19:11:12 2026 X-Original-To: dev-commits-doc-all@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 4f5Ckm431yz6Qb61 for ; Tue, 03 Feb 2026 19:11:12 +0000 (UTC) (envelope-from git@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 "R13" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4f5Ckm2sDFz3bFJ for ; Tue, 03 Feb 2026 19:11:12 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1770145872; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=D2BV7rMt0YksOqMq1WkCPApWzlG4vXiIKyf7ywlkDGc=; b=ybs/EpqaYPW51Nf9Gtj0DJZmxKdj/RolaN6PilCS3KAkiCM2yg9oSdRlGxC7+jW7xxUMek fzuGb0bievFer9eoJ9y6iK75ss4IT72Uq5+CT6vK/m65hr9CxzkvPHySnIEtpASDxTKbU5 yCQm1q6PIkoISmU+2hIxkZiHk1QTkG8Y+rQ45twuiMbbgli7gsnhmD6rIiAYoxQJ938usl /yicH4kNAbdZj2daG3YmON7SAWw5SSQxyCx+hwbRhM0NXdmIL4Lh4dOqNJ23RfHyA/4njd xSBF8qdnGb3TT3Tx4KlK4qTUQ8EG4fATTIWOC7tzU13g06eo6XLcX2wHHeGlRQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1770145872; a=rsa-sha256; cv=none; b=MAusC7K7N4f/9U3C7UxKPe8Rjd8CpfsClSyVSJg6benZo6BUkQUobw8xj87iXwrE4JfWlp RUT6GJn3EDPbD+Cdo+aMuQq93CqN0z60Ph0xs7CL137BDISvSocglS8A5S7D8/9RZqO5RJ NOSk8Wto0Fe6Amu9FCRASV+kU6moDcZ2+DuEA8x8KLVXoHfnEd1mBkbSOCJT8ucFimyEMA vqCah0bzS8tClLHXhxGt3hG5qYmSD5Rl8ihce0ZYYN1Y5/1rfi7FNyUwRk2D4KzHpcqPP+ xVVr5rEteVRHyYoPQtGI6Z1iyNYTRtpL91O0dI1YQPHkAYk0yoa8McGYxHWA8w== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1770145872; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=D2BV7rMt0YksOqMq1WkCPApWzlG4vXiIKyf7ywlkDGc=; b=SiS5Siiqq5oyXSLWl2KPQ/Iq07VA5P935umasTBbqCIlGG4POLgIbD5cGRNY3ZAYxVrbQb 0MqrpDDIIJYrJ4hUoFBHWBhiA8r3ff8PW5pTf4yUGR9t83Knj+7ISSfE8VfiWkqJRcUsCC 7COIL0Lud/jr2ZKOwxP42rB7lRHTL2oxwDzhd8xFp4DTUXehMfUd72HMfxcyx9HaGuhSYo 3ZXLJvrX5Ktbdcgg2OQ+CtYX91n8gKZe0S26oF3sCYKD7g3wXilUL6n4FAyLBydy3CqyQf qcoiMKvLM2os4G4pqpyR9tZ8f8buK/xMi1yrRMtAmr5d4z55WHfqMj2QMsZ+6A== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4f5Ckm2P1fz94n for ; Tue, 03 Feb 2026 19:11:12 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 332a0 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Tue, 03 Feb 2026 19:11:12 +0000 To: doc-committers@FreeBSD.org, dev-commits-doc-all@FreeBSD.org Cc: Garett Boone From: Alexander Ziaee Subject: git: 096c63bb9b - main - handbook/zfs: Fix vfs.zfs.prefetch.disable sysctl List-Id: Commit messages for all branches of the doc repository List-Archive: https://lists.freebsd.org/archives/dev-commits-doc-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-doc-all@freebsd.org Sender: owner-dev-commits-doc-all@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: ziaee X-Git-Repository: doc X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 096c63bb9bc238d963d2f2883226354a940dbc74 Auto-Submitted: auto-generated Date: Tue, 03 Feb 2026 19:11:12 +0000 Message-Id: <69824850.332a0.2a5ca3bb@gitrepo.freebsd.org> The branch main has been updated by ziaee: URL: https://cgit.FreeBSD.org/doc/commit/?id=096c63bb9bc238d963d2f2883226354a940dbc74 commit 096c63bb9bc238d963d2f2883226354a940dbc74 Author: Garett Boone AuthorDate: 2025-09-27 03:14:32 +0000 Commit: Alexander Ziaee CommitDate: 2026-02-03 19:11:00 +0000 handbook/zfs: Fix vfs.zfs.prefetch.disable sysctl Reviewed by: ziaee Closes: https://github.com/freebsd/freebsd-doc/pull/554 --- documentation/content/en/books/handbook/zfs/_index.adoc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/documentation/content/en/books/handbook/zfs/_index.adoc b/documentation/content/en/books/handbook/zfs/_index.adoc index 36e79b2308..22d41f6468 100644 --- a/documentation/content/en/books/handbook/zfs/_index.adoc +++ b/documentation/content/en/books/handbook/zfs/_index.adoc @@ -2671,7 +2671,7 @@ Future disks use 4 KB sectors, and `ashift` values cannot change after creating In some specific cases, the smaller 512-byte block size might be preferable. When used with 512-byte disks for databases or as storage for virtual machines, less data transfers during small random reads. This can provide better performance when using a smaller ZFS record size. -* [[zfs-advanced-tuning-prefetch_disable]] `_vfs.zfs.prefetch_disable_` - +* [[zfs-advanced-tuning-prefetch_disable]] `_vfs.zfs.prefetch.disable_` - Disable prefetch. A value of `0` enables and `1` disables it. The default is `0`, unless the system has less than 4 GB of RAM. Prefetch works by reading larger blocks than requested into the crossref:zfs[zfs-term-arc,ARC] in hopes to soon need the data. If the workload has a large number of random reads, disabling prefetch may actually improve performance by reducing unnecessary reads. Adjust this value at any time with man:sysctl[8].