From patchwork Tue Jun 8 05:58:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SsO8cmdlbiBHcm/Dnw==?= X-Patchwork-Id: 12305437 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 776F7C4743E for ; Tue, 8 Jun 2021 05:59:05 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 277B061108 for ; Tue, 8 Jun 2021 05:59:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 277B061108 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.138271.256003 (Exim 4.92) (envelope-from ) id 1lqUlG-0001Yy-OL; Tue, 08 Jun 2021 05:58:50 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 138271.256003; Tue, 08 Jun 2021 05:58:50 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lqUlG-0001Yr-L0; Tue, 08 Jun 2021 05:58:50 +0000 Received: by outflank-mailman (input) for mailman id 138271; Tue, 08 Jun 2021 05:58:49 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lqUlF-0001Yf-4T for xen-devel@lists.xenproject.org; Tue, 08 Jun 2021 05:58:49 +0000 Received: from smtp-out2.suse.de (unknown [195.135.220.29]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 35bf5c20-3fea-4264-85fe-236ddbfd58f0; Tue, 08 Jun 2021 05:58:47 +0000 (UTC) Received: from imap.suse.de (imap-alt.suse-dmz.suse.de [192.168.254.47]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 2A0BE1FD50; Tue, 8 Jun 2021 05:58:47 +0000 (UTC) Received: from imap3-int (imap-alt.suse-dmz.suse.de [192.168.254.47]) by imap.suse.de (Postfix) with ESMTP id F27D6118DD; Tue, 8 Jun 2021 05:58:46 +0000 (UTC) Received: from director2.suse.de ([192.168.254.72]) by imap3-int with ESMTPSA id OBsOOhYHv2AQbAAALh3uQQ (envelope-from ); Tue, 08 Jun 2021 05:58:46 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 35bf5c20-3fea-4264-85fe-236ddbfd58f0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1623131927; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=i2oAt0R0s4NoNFYvZ9Mbyh4IYQkZZ3RW7YMkBQwQXlQ=; b=UT64tIpTEgxopaXUTiBBPwXIcr65Zj2CYspcux64iBAXY0DjPoW02shBGW6+9SLPTz8KTn fwLooxuo3KfUqEhqwBY0DjZu6YRk7QGDLvX4DpI2PIjOec2A7qe08xqY3j9apXDc+hXSgi /5KB8sGFhaT2orkadCZF7j8zvKNvVj0= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1623131927; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=i2oAt0R0s4NoNFYvZ9Mbyh4IYQkZZ3RW7YMkBQwQXlQ=; b=UT64tIpTEgxopaXUTiBBPwXIcr65Zj2CYspcux64iBAXY0DjPoW02shBGW6+9SLPTz8KTn fwLooxuo3KfUqEhqwBY0DjZu6YRk7QGDLvX4DpI2PIjOec2A7qe08xqY3j9apXDc+hXSgi /5KB8sGFhaT2orkadCZF7j8zvKNvVj0= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Ian Jackson , Wei Liu Subject: [PATCH v2 1/2] tools/xenstore: set oom score for xenstore daemon on Linux Date: Tue, 8 Jun 2021 07:58:38 +0200 Message-Id: <20210608055839.10313-2-jgross@suse.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210608055839.10313-1-jgross@suse.com> References: <20210608055839.10313-1-jgross@suse.com> MIME-Version: 1.0 Xenstored is absolutely mandatory for a Xen host and it can't be restarted, so being killed by OOM-killer in case of memory shortage is to be avoided. Set /proc/$pid/oom_score_adj (if available) to -500 in order to allow xenstored to use large amounts of memory without being killed. Make sure the pid file isn't a left-over from a previous run delete it before starting xenstored. Signed-off-by: Juergen Gross Acked-by: Julien Grall --- V2: - set oom score from launch script (Julien Grall) - split off open file descriptor limit setting (Julien Grall) --- tools/hotplug/Linux/launch-xenstore.in | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/hotplug/Linux/launch-xenstore.in b/tools/hotplug/Linux/launch-xenstore.in index 019f9d6f4d..3ad71e3d08 100644 --- a/tools/hotplug/Linux/launch-xenstore.in +++ b/tools/hotplug/Linux/launch-xenstore.in @@ -59,11 +59,14 @@ test -f @CONFIG_DIR@/@CONFIG_LEAF_DIR@/xencommons && . @CONFIG_DIR@/@CONFIG_LEAF echo "No xenstored found" exit 1 } + rm -f @XEN_RUN_DIR@/xenstored.pid echo -n Starting $XENSTORED... $XENSTORED --pid-file @XEN_RUN_DIR@/xenstored.pid $XENSTORED_ARGS systemd-notify --booted 2>/dev/null || timeout_xenstore $XENSTORED || exit 1 + XS_PID=`cat @XEN_RUN_DIR@/xenstored.pid` + echo -500 >/proc/$XS_PID/oom_score_adj exit 0 }