mirror of https://gerrit.osmocom.org/osmo-sysmon
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* Simple Osmocom System Monitor (osysmon): Support for uptime/load/ram */
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/* (C) 2018 by Harald Welte <laforge@gnumonks.org>
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* All Rights Reserved.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <string.h>
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#include <sys/sysinfo.h>
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#include <osmocom/vty/vty.h>
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#include <osmocom/vty/command.h>
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#include "osysmon.h"
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#include "value_node.h"
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/***********************************************************************
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* Runtime Code
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***********************************************************************/
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/* called once on startup before config file parsing */
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int osysmon_sysinfo_init()
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{
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return 0;
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}
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static float loadfac(unsigned long in) {
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return in/65536.0;
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}
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#define to_mbytes(in) ((in)/((1024*1024)/si.mem_unit))
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#define SECS_PER_MIN 60UL
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#define MINS_PER_HOUR 60UL
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#define HOURS_PER_DAY 24UL
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#define to_days(in) ((in)/(SECS_PER_MIN*MINS_PER_HOUR*HOURS_PER_DAY))
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#define to_hours(in) (((in)/(SECS_PER_MIN*MINS_PER_HOUR))%HOURS_PER_DAY)
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#define to_minutes(in) (((in)/(SECS_PER_MIN))%MINS_PER_HOUR)
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#define to_seconds(in) ((in)%SECS_PER_MIN)
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/* called periodically */
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int osysmon_sysinfo_poll(struct value_node *parent)
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{
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struct sysinfo si;
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struct value_node *vn_sysinfo;
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char buf[32];
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int rc;
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vn_sysinfo = value_node_add(parent, parent, "sysinfo", NULL);
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rc = sysinfo(&si);
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if (rc < 0)
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return rc;
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/* Load Factor 1/5/15min */
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snprintf(buf, sizeof(buf), "%.2f/%.2f/%.2f",
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loadfac(si.loads[0]), loadfac(si.loads[1]), loadfac(si.loads[2]));
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value_node_add(vn_sysinfo, vn_sysinfo, "load", buf);
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/* RAM information (total/free/sared) in megabytes */
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snprintf(buf, sizeof(buf), "%lu/%lu/%lu",
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to_mbytes(si.totalram), to_mbytes(si.freeram), to_mbytes(si.sharedram));
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value_node_add(vn_sysinfo, vn_sysinfo, "ram", buf);
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/* uptime in days/hours/minutes/seconds */
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snprintf(buf, sizeof(buf), "%lud %02lu:%02lu:%02lu", to_days(si.uptime),
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to_hours(si.uptime), to_minutes(si.uptime), to_seconds(si.uptime));
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value_node_add(vn_sysinfo, vn_sysinfo, "uptime", buf);
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return 0;
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}
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