mirror of
https://github.com/ntop/ntopng.git
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59 lines
2 KiB
C++
59 lines
2 KiB
C++
/*
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*
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* (C) 2013-20 - ntop.org
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*
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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 3 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 Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef WIN32
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#include "ntop_includes.h"
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/* #define TRACE_PING */
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/* ***************************************** */
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void ContinuousPingStats::update(float rtt) {
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stats.num_ping_sent++, stats.num_ping_rcvd++;
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if(rtt > 0) {
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stats.diff_sum += fabs(stats.last_rtt - rtt);
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stats.rtt_sum += rtt, stats.last_rtt = rtt;
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stats.min_rtt = (stats.num_ping_rcvd == 1) ? rtt : min(stats.min_rtt, rtt);
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stats.max_rtt = max(stats.max_rtt, rtt);
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}
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}
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/* ***************************************** */
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float ContinuousPingStats::getSuccessRate(float *min_rtt, float *max_rtt, float *jitter, float *mean) {
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float pctg = min((stats.num_ping_sent == 0) ? 0 : (float)(stats.num_ping_rcvd*100)/(float)(stats.num_ping_sent), 100.f);
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*min_rtt = stats.min_rtt, *max_rtt = stats.max_rtt;
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*mean = (stats.num_ping_rcvd == 0) ? 0 : stats.rtt_sum/stats.num_ping_rcvd;
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*jitter = (stats.num_ping_rcvd < 2) ? 0 : (stats.diff_sum / (stats.num_ping_rcvd-1));
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#ifdef TRACE_PING
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ntop->getTrace()->traceEvent(TRACE_NORMAL, "[sent: %u][rcvd: %u][RTT: %.3f/%.3f][Mean/Jitter: %.3f / %.3f]",
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stats.num_ping_sent, stats.num_ping_rcvd,
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stats.min_rtt, stats.max_rtt, *mean, *jitter);
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#endif
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return(pctg);
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}
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#endif /* WIN32 */
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