From owner-freebsd-fs@freebsd.org  Thu Dec  7 05:25:29 2017
Return-Path: <owner-freebsd-fs@freebsd.org>
Delivered-To: freebsd-fs@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id E8FF1E9D6CF
 for <freebsd-fs@mailman.ysv.freebsd.org>; Thu,  7 Dec 2017 05:25:29 +0000 (UTC)
 (envelope-from bugzilla-noreply@freebsd.org)
Received: from kenobi.freebsd.org (kenobi.freebsd.org
 [IPv6:2001:1900:2254:206a::16:76])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id D27DD76DCB
 for <freebsd-fs@FreeBSD.org>; Thu,  7 Dec 2017 05:25:29 +0000 (UTC)
 (envelope-from bugzilla-noreply@freebsd.org)
Received: from bugs.freebsd.org ([127.0.1.118])
 by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id vB75PT6R096412
 for <freebsd-fs@FreeBSD.org>; Thu, 7 Dec 2017 05:25:29 GMT
 (envelope-from bugzilla-noreply@freebsd.org)
From: bugzilla-noreply@freebsd.org
To: freebsd-fs@FreeBSD.org
Subject: [Bug 224080] ZFS: "arc_dnlc_evicts_thr" + "arc_reclaim_thread" -
 high CPU load during poudriere build...
Date: Thu, 07 Dec 2017 05:25:29 +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: regression
X-Bugzilla-Severity: Affects Only Me
X-Bugzilla-Who: cy@FreeBSD.org
X-Bugzilla-Status: New
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: ---
X-Bugzilla-Assigned-To: freebsd-fs@FreeBSD.org
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-224080-3630-MI9kZlhYp1@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-224080-3630@https.bugs.freebsd.org/bugzilla/>
References: <bug-224080-3630@https.bugs.freebsd.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.25
Precedence: list
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-fs>,
 <mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs/>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
 <mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 07 Dec 2017 05:25:30 -0000

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D224080

--- Comment #10 from Cy Schubert <cy@FreeBSD.org> ---
During a buildworld -DNO_CLEAN (second machine):

                       Total     MFU     MRU    Anon     Hdr   L2Hdr   Other
     ZFS ARC           2001M    464M   1300M   8695K     30M      0K    198M

                                rate    hits  misses   total hits total mis=
ses
     arcstats                  : 71%     660     258       274342       697=
629
     arcstats.demand_data      : 67%     218     107        96070        81=
229
     arcstats.demand_metadata  : 25%      44     129        43412       569=
950
     arcstats.prefetch_data    :  0%       0      22        10019        27=
947
     arcstats.prefetch_metadata:100%     398       0       124841        18=
503
     zfetchstats               :  4%      99    2013        28345      3844=
648
     arcstats.l2               :  0%       0       0            0          =
  0
     vdev_cache_stats          : 58%       7       5         9786        19=
927



I'm getting pretty healty hit rates where as with r326347 the hit rates wer=
e in
the low single digits.

--=20
You are receiving this mail because:
You are the assignee for the bug.=