Date: Wed, 16 Dec 2020 13:30:12 -0700 From: Alan Somers <asomers@freebsd.org> To: Allan Jude <allanjude@freebsd.org> Cc: src-committers <src-committers@freebsd.org>, svn-src-all <svn-src-all@freebsd.org>, svn-src-releng@freebsd.org Subject: Re: svn commit: r365917 - in releng/12.2: cddl/contrib/opensolaris/cmd/zfs cddl/contrib/opensolaris/cmd/zpool sys/cddl/compat/opensolaris/kern sys/cddl/compat/opensolaris/sys sys/cddl/contrib/opensolar... Message-ID: <CAOtMX2gShB9GXfC4QbOf9OuvJhfGt4tMqXbfTjXoPV0ofU0igQ@mail.gmail.com> In-Reply-To: <202009192046.08JKkuBn080241@repo.freebsd.org> References: <202009192046.08JKkuBn080241@repo.freebsd.org>
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On Sat, Sep 19, 2020 at 2:47 PM Allan Jude <allanjude@freebsd.org> wrote: > Author: allanjude > Date: Sat Sep 19 20:46:56 2020 > New Revision: 365917 > URL: https://svnweb.freebsd.org/changeset/base/365917 > > Log: > MFS r365689,r365808,r365860 > > MFOpenZFS: Introduce read/write kstats per dataset > > The following patch introduces a few statistics on reads and writes > grouped by dataset. These statistics are implemented as kstats > (backed by aggregate sums for performance) and can be retrieved by > using the dataset objset ID number. The motivation for this change is > to provide some preliminary analytics on dataset usage/performance. > > Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> > Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> > Reviewed by: Matthew Ahrens <mahrens@delphix.com> > Signed-off-by: Serapheim Dimitropoulos <serapheim@delphix.com> > > openzfs/zfs@a448a2557ec4938ed6944c7766fe0b8e6e5f6456 > > Also contains parts of: > MFOpenZFS: Connect dataset_kstats for FreeBSD > > Example output: > kstat.zfs.mypool.dataset.objset-0x10b.nread: 150528 > kstat.zfs.mypool.dataset.objset-0x10b.reads: 48 > kstat.zfs.mypool.dataset.objset-0x10b.nwritten: 134217728 > kstat.zfs.mypool.dataset.objset-0x10b.writes: 1024 > kstat.zfs.mypool.dataset.objset-0x10b.dataset_name: mypool/datasetname > > Reviewed-by: Ryan Moeller <ryan@iXsystems.com> > Reviewed by: Sean Eric Fagan <sef@ixsystems.com> > Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com> > Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> > Signed-off-by: Allan Jude <allan@klarasystems.com> > > openzfs/zfs@4547fc4e071ceb1818b3a46c3035b923e06e5390 > > Approved by: re (gjb) > Relnotes: yes > Sponsored by: Klara Inc. > This sounds quite useful! I've often wished that I could see per-dataset traffic statistics. Are there any user-friendly frontends to this? Like zfs-stats, or an updated zpool iostat? -Alan
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