From nobody Tue Feb 10 05:27:23 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; envelope-from=libvir-list-bounces@redhat.com; helo=mx1.redhat.com; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 1508318407275924.6833843445349; Wed, 18 Oct 2017 02:20:07 -0700 (PDT) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AEA4C3B70B; Wed, 18 Oct 2017 09:20:05 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 03BA217CD6; Wed, 18 Oct 2017 09:20:05 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 41AAF1800C9A; Wed, 18 Oct 2017 09:20:04 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id v9I9Jfuj032209 for ; Wed, 18 Oct 2017 05:19:41 -0400 Received: by smtp.corp.redhat.com (Postfix) id CF23F17CDD; Wed, 18 Oct 2017 09:19:41 +0000 (UTC) Received: from mx1.redhat.com (ext-mx06.extmail.prod.ext.phx2.redhat.com [10.5.110.30]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C4B0E91D8E for ; Wed, 18 Oct 2017 09:19:36 +0000 (UTC) Received: from youngberry.canonical.com (youngberry.canonical.com [91.189.89.112]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 41FAE356C7 for ; Wed, 18 Oct 2017 09:19:35 +0000 (UTC) Received: from 1.general.paelzer.uk.vpn ([10.172.196.172] helo=localhost.localdomain) by youngberry.canonical.com with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.76) (envelope-from ) id 1e4kVh-00037c-V1; Wed, 18 Oct 2017 09:19:34 +0000 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com AEA4C3B70B Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=fail (p=none dis=none) header.from=canonical.com Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=libvir-list-bounces@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com AEA4C3B70B DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 41FAE356C7 Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=fail (p=none dis=none) header.from=canonical.com Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; spf=none smtp.mailfrom=christian.ehrhardt@canonical.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 41FAE356C7 From: Christian Ehrhardt To: Libvirt Devel Date: Wed, 18 Oct 2017 11:19:29 +0200 Message-Id: <1508318370-20141-2-git-send-email-christian.ehrhardt@canonical.com> In-Reply-To: <1508318370-20141-1-git-send-email-christian.ehrhardt@canonical.com> References: <1508318370-20141-1-git-send-email-christian.ehrhardt@canonical.com> X-Greylist: Sender passed SPF test, Sender IP whitelisted by DNSRBL, ACL 205 matched, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Wed, 18 Oct 2017 09:19:35 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Wed, 18 Oct 2017 09:19:35 +0000 (UTC) for IP:'91.189.89.112' DOMAIN:'youngberry.canonical.com' HELO:'youngberry.canonical.com' FROM:'christian.ehrhardt@canonical.com' RCPT:'' X-RedHat-Spam-Score: -2.321 (RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, RP_MATCHES_RCVD) 91.189.89.112 youngberry.canonical.com 91.189.89.112 youngberry.canonical.com X-Scanned-By: MIMEDefang 2.78 on 10.5.110.30 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-loop: libvir-list@redhat.com Cc: Christian Ehrhardt Subject: [libvirt] [PATCH 1/2] Increase default file handle limits for virtlogd X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Wed, 18 Oct 2017 09:20:06 +0000 (UTC) X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" The initial assumption was ~2 files per guest, but some common setups like Openstack drive up to 4 files per guest. E.g. on Arm where the following XML leads to 4 file handles: With that in mind and the target to support 4k guests by default we should raise the limit to 16k. Signed-off-by: Christian Ehrhardt --- src/logging/virtlogd.service.in | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/logging/virtlogd.service.in b/src/logging/virtlogd.service= .in index ec7712b..aa9aa69 100644 --- a/src/logging/virtlogd.service.in +++ b/src/logging/virtlogd.service.in @@ -15,9 +15,11 @@ ExecReload=3D/bin/kill -USR1 $MAINPID OOMScoreAdjust=3D-900 # Need to have at least one file open per guest (eg QEMU # stdio log), but might be more (eg serial console logs) +# A common case is OpenStack which often has up to 4 file +# handles per guest. # libvirtd.service written to expect 4096 guests, so if we -# guess at 2 log files per guest here (stdio + 1 serial): -LimitNOFILE=3D8192 +# guess at 4 files per guest here that is 16k: +LimitNOFILE=3D16384 =20 [Install] Also=3Dvirtlogd.socket --=20 2.7.4 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list