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Tue, 08 Jun 2021 05:58:46 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version 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 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) Content-Type: text/plain; charset="utf-8" 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/l= aunch-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 =20 echo -n Starting $XENSTORED... $XENSTORED --pid-file @XEN_RUN_DIR@/xenstored.pid $XENSTORED_ARGS =20 systemd-notify --booted 2>/dev/null || timeout_xenstore $XENSTORED || exi= t 1 + XS_PID=3D`cat @XEN_RUN_DIR@/xenstored.pid` + echo -500 >/proc/$XS_PID/oom_score_adj =20 exit 0 } --=20 2.26.2