Date: Tue, 20 Sep 2016 16:30:59 +0000 (UTC) From: Glen Barber <gjb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-releng@freebsd.org Subject: svn commit: r306032 - releng/11.0/release/doc/en_US.ISO8859-1/relnotes Message-ID: <201609201630.u8KGUxHk086922@repo.freebsd.org>
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Author: gjb Date: Tue Sep 20 16:30:59 2016 New Revision: 306032 URL: https://svnweb.freebsd.org/changeset/base/306032 Log: Document r298002, NCQ TRIM support, CAM_IOSCHED_ADATPIVE. Submitted by: imp Approved by: re (implicit) Sponsored by: The FreeBSD Foundation Modified: releng/11.0/release/doc/en_US.ISO8859-1/relnotes/article.xml Modified: releng/11.0/release/doc/en_US.ISO8859-1/relnotes/article.xml ============================================================================== --- releng/11.0/release/doc/en_US.ISO8859-1/relnotes/article.xml Tue Sep 20 16:28:57 2016 (r306031) +++ releng/11.0/release/doc/en_US.ISO8859-1/relnotes/article.xml Tue Sep 20 16:30:59 2016 (r306032) @@ -1620,6 +1620,30 @@ for parsing libucl-based configuration files has been added to &man.ctld.8;.</para> + <para revision="298002" contrib="sponsor" + sponsor="&netflix;">The &man.ahci.4; driver has been updated + to add <acronym>NCQ</acronym> <acronym>TRIM</acronym> support + for drives that support it.</para> + + <note> + <para>Drives that advertise this feature but do not properly + support it have been blacklisted. Systems experiencing + traffic problems with <acronym>NCQ</acronym> + <acronym>TRIM</acronym> enabled can set the + <literal>kern.cam.ada.%d.quirks</literal> tunable to + <literal>2</literal> for 512k sectors or + <literal>3</literal> for 4096k sectors, replacing + <literal>%d</literal> with the drive number.</para> + </note> + + <para revision="298002" contrib="sponsor" + sponsor="&netflix;">The &man.cam.4; driver has been updated to + allow I/O scheduling tuning to fit workload and drive + characteristics. This option is off by default, and can be + enabled by adding <literal>option + CAM_IOSCHED_ADATPIVE</literal> option to the kernel + configuration and recompiling the kernel.</para> + <para revision="299371" contrib="sponsor" sponsor="&ff;">The &man.camcontrol.8; command can manually force updating capacity data after a disk gets resized using the reprobe
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