2.1 相关理论
Smokeping：rrdtool的作者TobiOetiker 的作品，是用Perl语言编写完成，组件：RRDtool、Fping、Echoping、Curl、Dig、SSh、Perl 模块，Perl、SpeedyCGI、ApacheORNGINX。
三、脚本
#!/bin/bash
#Date 2016/11/11
#mail xuel@linuxidc.com
[ $(id -u) != "0" ] && echo "Error: You must be root to run this script" && exit 1
export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
sed -i "s/SELINUX=enforcing/SELINUX=disabled/" /etc/selinux/config
setenforce 0
which ntpdate
if [ $? -eq 0 ];then
/usr/sbin/ntpdate time1.aliyun.com
echo "*/5 * * * * /usr/sbin/ntpdate -s time1.aliyun.com">>/var/spool/cron/root
else
yum install ntpdate -y
/usr/sbin/ntpdate time1.aliyun.com
echo "*/5 * * * * /usr/sbin/ntpdate -s time1.aliyun.com">>/var/spool/cron/root
fi
clear
echo "##########################################"
echo "Auto Install smokeping-2.6.11 ##"
echo "Press Ctrl + C to cancel ##"
echo "Any key to continue ##"
echo "##########################################"
read -n 1
/etc/init.d/iptables status >/dev/null 2>&1
if [ $? -eq 0 ]
then
iptables -I INPUT -p tcp --dport 80 -j ACCEPT &&
iptables-save >/dev/null 2>&1
else
echo -e "\033[32m iptables is stopd\033[0m"
fi
IP=`/sbin/ifconfig|sed -n '/inet addr/s/^[^:]*:\([0-9.]\{7,15\}\) .*/\1/1p'|sed -n '1p'`
sed -i "s/SELINUX=enforcing/SELINUX=disabled/" /etc/selinux/config
setenforce 0
rpm -Uvh RedHat/el6/en/x86_64/rpmforge/RPMS/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm 1>/dev/null
yum -y install perl perl-Net-Telnet perl-Net-DNS perl-LDAP perl-libwww-perl perl-RadiusPerl perl-IO-Socket-SSL perl-Socket6 perl-CGI-SpeedyCGI perl-FCGI perl-CGI-SpeedCGI perl-Time-HiRes perl-ExtUtils-MakeMaker perl-RRD-Simple rrdtool rrdtool-perl curl fping echoping httpd httpd-devel gcc make wget libxml2-devel libpng-devel glib pango pango-devel freetype freetype-devel fontconfig cairo cairo-devel libart_lgpl gcc libart_lgpl-devel mod_fastcgi wget wqy-*
if [ -d /opt ];then
cd /opt
else
mkdir -p /opt && cd /opt
fi
wget -c
tar -xvf smokeping-2.6.11.tar.gz 1>/dev/null
cd /opt/smokeping-2.6.11
./setup/build-perl-modules.sh /usr/local/smokeping/thirdparty
./configure -prefix=/usr/local/smokeping
/usr/bin/gmake install 1>/dev/null
cd /usr/local/smokeping
mkdir cache data var 1>/dev/null
touch /var/log/smokeping.log
chown -R apache:apache cache data var
chown -R apache:apache /var/log/smokeping.log
mv /usr/local/smokeping/htdocs/smokeping.fcgi.dist /usr/local/smokeping/htdocs/smokeping.fcgi
mv /usr/local/smokeping/etc/config.dist /usr/local/smokeping/etc/config
cp -f /usr/local/smokeping/etc/config /usr/local/smokeping/etc/config.back
sed -i "s/some.url/IP/g" /usr/local/smokeping/etc/config
chmod 600 /usr/local/smokeping/etc/smokeping_secrets.dist
if [ -d /opt ];then
cd /opt
else
mkdir -p /opt && cd /opt
fi
wget -c -O /opt/fping-3.13.tar.gz
tar zxvf fping-3.13.tar.gz
cd fping-3.13
./configure --prefix=/usr/local/fping
make && make install
sed -i "s#`grep fping /usr/local/smokeping/etc/config`#binary = /usr/local/fping/sbin/fping#g" /usr/local/smokeping/etc/config
sed -i "148i'--font TITLE:20:"WenQuanYi\ Zen\ Hei\ Mono"'\," /usr/local/smokeping/lib/Smokeping/Graphs.pm
cp -rf /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.conf.back
cat >> /etc/httpd/conf/httpd.conf <<'EOF'
Alias /cache "/usr/local/smokeping/cache/"
Alias /cropper "/usr/local/smokeping/htdocs/cropper/"
Alias /smokeping "/usr/local/smokeping/htdocs/smokeping.fcgi"
<Directory "/usr/local/smokeping">
AllowOverride None
Options All
AddHandler cgi-script .fcgi .cgi
Order allow,deny
Allow from all
DirectoryIndex smokeping.fcgi
</Directory>
EOF
if [ -f /etc/init.d/smokeping ];then
echo "/etc/init.d/smokeping is exist"
else
touch /etc/init.d/smokeping
cat > /etc/init.d/smokeping <<'EOF'
#!/bin/bash
#chkconfig: 2345 80 05
# Description: Smokeping init.d script
# Create by : Mox
# Get function from functions library
. /etc/init.d/functions
# Start the service Smokeping
smokeping=/usr/local/smokeping/bin/smokeping
prog=smokeping
pidfile=${PIDFILE-/usr/local/smokeping/var/smokeping.pid}
lockfile=${LOCKFILE-/var/lock/subsys/smokeping}
RETVAL=0
STOP_TIMEOUT=${STOP_TIMEOUT-10}
LOG=/var/log/smokeping.log
start() {
echo -n $"Starting $prog: "
LANG=$HTTPD_LANG daemon --pidfile=${pidfile} $smokeping $OPTIONS
RETVAL=$?
echo
[ $RETVAL = 0 ] && touch ${lockfile}
return $RETVAL
}
# Restart the service Smokeping
stop() {
echo -n $"Stopping $prog: "
killproc -p ${pidfile} -d ${STOP_TIMEOUT} $smokeping
RETVAL=$?
echo
[ $RETVAL = 0 ] && rm -f ${lockfile} ${pidfile}
}
STOP_TIMEOUT=${STOP_TIMEOUT-10}
LOG=/var/log/smokeping.log
start() {
echo -n $"Starting $prog: "
LANG=$HTTPD_LANG daemon --pidfile=${pidfile} $smokeping $OPTIONS
RETVAL=$?
echo
[ $RETVAL = 0 ] && touch ${lockfile}
return $RETVAL
}
# Restart the service Smokeping
stop() {
echo -n $"Stopping $prog: "
killproc -p ${pidfile} -d ${STOP_TIMEOUT} $smokeping
RETVAL=$?
echo
[ $RETVAL = 0 ] && rm -f ${lockfile} ${pidfile}
}
case "$1" in
start)
start
;;
stop)
stop
;;
status)
status -p ${pidfile} $httpd
RETVAL=$?
;;
restart)
stop
start
;;
*)
echo $"Usage: $prog {start|stop|restart|status}"
RETVAL=2
esac
EOF
fi
cat > /usr/local/smokeping/etc/config <<'EOF'
*** General ***
owner = Peter Random
contact = service02@linuxidc.com
#mailhost = smtp.linuxidc.com:25
#mailusr = xuel@linuxidc
#mailpwd = anchnet@123.com
#sendmail = /usr/sbin/sendmail
# NOTE: do not put the Image Cache below cgi-bin
# since all files under cgi-bin will be executed ... this is not
# good for images.
imgcache = /usr/local/smokeping/cache
imgurl = cache
datadir = /usr/local/smokeping/data
piddir = /usr/local/smokeping/var
cgiurl = $IP/smokeping.cgi
smokemail = /usr/local/smokeping/etc/smokemail.dist
tmail = /usr/local/smokeping/etc/tmail.dist
# specify this to get syslog logging
syslogfacility = local0
# each probe is now run in its own process
# disable this to revert to the old behaviour
# concurrentprobes = no
*** Alerts ***
to = 13122690827@linuxidc.com
from = service02@linuxidc.com
+someloss
type = loss
# in percent
pattern = >0%,*12*,>0%,*12*,>0%
comment = loss 3 times in a row
+rttdetect
type = rtt
#in milli seconds
pattern = <10,<10,<10,<10,<10,<100,>100,>100,>100
edgetrigger = yes
comment = routing messed up again ?
+lossdetect
type = loss
# in percent
pattern = ==0%,==0%,==0%,==0%,>20%,>20%,>20%
edgetrigger = yes
comment = suddenly there is packet loss
+miniloss
type = loss
# in percent
pattern = >0%,*12*,>0%,*12*,>0%
edgetrigger = yes
#pattern = >0%,*12*
comment = detected loss 1 times over the last two hours
#+rttdetect
#type = rtt
# in milliseconds
#pattern = <1,<1,<1,<1,<1,<2,>2,>2,>2
#comment = routing messed up again ?
+rttbad
type = rtt
# in milliseconds
edgetrigger = yes
pattern = ==S,>20
comment = route
+rttbadstart
type = rtt
# in milliseconds
edgetrigger = yes
pattern = ==S,==U
comment = offline at startup
*** Database ***
step = 60
pings = 20
# consfn mrhb steps total
AVERAGE 0.5 1 1008
AVERAGE 0.5 12 4320
MIN 0.5 12 4320
MAX 0.5 12 4320
AVERAGE 0.5 144 720
MAX 0.5 144 720
MIN 0.5 144 720
*** Presentation ***
charset = utf-8
template = /usr/local/smokeping/etc/basepage.html.dist
+ charts
menu = 排行榜
title = 排行榜
++ stddev
sorter = StdDev(entries=>4)
title = 综合指数排行
menu = 综合指数排行
format = 综合指数 %f
++ max
sorter = Max(entries=>5)
title = 最大延迟排行
menu = 最大延迟排行
format = 最大延迟时间 %f 秒
++ loss
sorter = Loss(entries=>5)
title = 丢包率排行
menu = 丢包率排行
format = 丢包 %f
++ median
sorter = Median(entries=>5)
title = 平均延迟排行
menu = 平均延迟排行
format = 平均延迟 %f 秒
+ overview
width = 860
height = 150
range = 10h
+ detail
width = 860
height = 200
unison_tolerance = 2
"Last 3 Hours" 3h
"Last 30 Hours" 30h
"Last 10 Days" 10d
"Last 30 Days" 30d
"Last 90 Days" 90d
#+ hierarchies
#++ owner
#title = Host Owner
#++ location
#title = Location
*** Probes ***
+ FPing
binary = /usr/local/fping/sbin/fping
*** Slaves ***
secrets=/usr/local/smokeping/etc/smokeping_secrets.dist
+boomer
display_name=boomer
color=0000ff
+slave2
display_name=another
color=00ff00
*** Targets ***
probe = FPing
menu = Top
#title = Network Latency Grapher
title = IDC网络节点质量监控
#remark = Welcome to the SmokePing website of xxx Company. \
# Here you will learn all about the latency of our network.
remark = Smokeping 网络质量监控系统
+ TELCOM
menu = 电信
title = 电信
++ north
menu = 华北区
title = 华北区
+++ beijing
menu = 北京
title = 北京:218.30.25.45
host = 218.30.25.45
+++ tianjin
menu = 天津
title = 天津:219.150.32.132
host = 219.150.32.132
+++ shijiazhuang
menu = 石家庄
title = 石家庄:123.180.0.1
host = 123.180.0.1
+++ huhehaote
menu = 呼和浩特
title = 呼和浩特:219.148.168.218
host = 219.148.168.218
++ northeast
menu = 东北区
title = 东北区
+++ qiqihaer
menu = 齐齐哈尔
title = 齐齐哈尔:222.170.0.61
host = 222.170.0.61
+++ changchun
menu = 长春
title = 长春:222.168.78.1
host = 222.168.78.1
+++ jilin
menu = 吉林
title = 吉林:123.173.127.2
host = 123.173.127.2
++ east
menu = 华东区
title = 华东区
+++ jinan
menu = 济南
title = 济南:58.56.25.4
host = 58.56.25.4
+++ shanghai
menu = 上海
title = 上海:116.228.111.118
host = 116.228.111.118
+++ nanjing
menu = 南京
title = 南京:221.231.191.214
host = 221.231.191.214
+++ hefei
menu = 合肥
title = 合肥:61.190.246.5
host = 61.190.246.5
+++ nanchang
menu = 南昌
title = 南昌:202.101.224.68
host = 202.101.224.68
+++ hangzhou
menu = 杭州
title = 杭州:60.191.62.31
host = 60.191.62.31
+++ fuzhou
menu = 福州
title = 福州:202.101.98.55
host = 202.101.98.55
++ south
menu = 中南区
title = 中南区
+++ luoyang
menu = 洛阳
title = 洛阳:123.52.130.12
host = 123.52.130.12
+++ wuhan
menu = 武汉
title = 武汉:111.175.233.30
host = 111.175.233.30
+++ changsha
menu = 长沙
title = 长沙:124.232.134.54
host = 124.232.134.54
+++ guangzhou
menu = 广州
title = 广州:58.61.200.1
host = 58.61.200.1
+++ shenzhen
menu = 深圳
title = 深圳:58.60.3.102
host = 58.60.3.102
+++ nanning
menu = 南宁
title = 南宁:222.217.164.38
host = 222.217.164.38
+++ haikou
menu = 海口
title = 海口:218.77.149.238
host = 218.77.149.238
++ southwest
menu = 西南区
title = 西南区
+++ chengdu
menu = 成都
title = 成都:61.157.77.1
host = 61.157.77.1
+++ chongqing
menu = 重庆
title = 重庆:218.70.65.254
host = 218.70.65.254
+++ guiyang
menu = 贵阳
title = 贵阳:59.51.128.31
host = 59.51.128.31
+++ kunming
menu = 昆明
title = 昆明:222.172.200.5
host = 222.172.200.5
+++ lasa
menu = 拉萨
title = 拉萨:124.31.0.1
host = 124.31.0.1
++ northwest
menu = 西北区
title = 西北区
+++ xian
menu = 西安
title = 西安:125.76.191.linuxidc
alerts = someloss
host = 125.76.191.linuxidc
+++ ningxia
menu = 宁夏
title = 宁夏:124.224.255.54
host = 124.224.255.54
+++ lanzhou
menu = 兰州
title = 兰州:61.178.252.218
host = 61.178.252.218
+++ xining
menu = 西宁
title = 西宁:223.220.241.26
host = 223.220.241.26
+++ wulumuqi
menu = 乌鲁木齐
title = 乌鲁木齐:61.128.96.1
host = 61.128.96.1
+ UNICOM
menu = 联通
title = 联通
++ north
menu = 华北区
title = 华北区
+++ beijing
menu = 北京
title = 北京:61.135.150.3
host = 61.135.150.3
+++ tianjin
menu = 天津
title = 天津:202.99.96.38
host = 202.99.96.38
+++ shijiazhuang
menu= 石家庄
title = 石家庄:221.192.1.221
host = 221.192.1.221
+++ taiyuan
menu = 太原
title = 太原:218.26.171.2
host = 218.26.171.2
++ northeast
menu = 东北区
title = 东北区
+++ changchun
menu = 长春
title = 长春:125.32.127.2
host = 125.32.127.2
+++ shenyang
menu = 沈阳
title = 沈阳:218.60.54.164
host = 218.60.54.164
+++ jilin
menu = 吉林
title = 吉林:218.62.77.121
host = 218.62.77.121
++ east
menu = 华东区
title = 华东区
+++jinan
menu = 济南
title = 济南:221.0.2.41
host = 221.0.2.41
+++ shanghai
menu = 上海
title = 上海:210.22.67.1
host = 210.22.67.1
+++ hangzhou
menu = 杭州
title = 杭州:101.68.92.11
host = 101.68.92.11
+++ nanchang
menu = 南昌
title = 南昌:118.212.189.129
host = 118.212.189.129
++ south
menu = 中南区
title = 中南区
+++ zhengzhou
menu = 郑州
title = 郑州:61.168.254.211
host = 61.168.254.211
+++ wuhan
menu = 武汉
title = 武汉:218.106.115.1
host = 218.106.115.1
+++ guangzhou
menu = 广州
title = 广州:211.95.193.69
host = 211.95.193.69
+++ shenzhen
menu = 深圳
title = 深圳:58.250.0.1
host = 58.250.0.1
+++ nanning
menu = 南宁
title = 南宁:211.97.71.202
host = 211.97.71.202
++ southwest
menu = 西南区
title = 西南区
+++ chongqing
menu = 重庆
title = 重庆:221.5.255.1
host = 221.5.255.1
++ northwest
menu = 西北区
title = 西北区
+++ xining
menu = 西宁
title = 西宁:221.207.27.1
host = 221.207.27.1
++ ceshiqu
menu = 测试区1
title = 测试区1
+++ test1
menu = 长春联通
title = 长春联通:119.48.221.29
host = 119.48.221.29
+++ test2
menu = 广东网通
title = 广东网通:120.84.0.1
host = 120.84.0.1
+++ test3
menu = 上海网通
title = 上海网通:210.22.67.1
host = 210.22.67.1
+++ test4
menu = 海南网通
title = 海南网通:221.11.132.2
host = 221.11.132.2
+++ test5
menu = 贵州联通
title = 贵州联通:221.13.21.194
host = 221.13.21.194
+++ test6
menu = 广西联通
title = 广西联通:221.7.136.68
host = 221.7.136.68
+++ test7
menu = 北京联通
title = 北京联通:60.30.128.1
host = 60.30.128.1
+++ test8
menu = 北京移动
title = 北京移动:218.205.128.1
host = 218.205.128.1
+++ test9
menu = 海口移动
title = 海口移动:221.182.227.1
host = 221.182.227.1
+++ test10
menu = 武汉铁通
title = 武汉铁通:61.232.206.1
host = 61.232.206.1
+ CMCC
menu = 移动
title = 移动
++ north
menu = 华北区
title = 华北区
+++ beijing
menu = 北京
title = 北京:221.130.33.1
host = 221.130.33.1
+++ tianjin
menu = 天津
title = 天津:211.137.160.1
host = 211.137.160.1
+++ qinhuangdao
menu = 秦皇岛
title = 秦皇岛:211.143.111.14
host = 211.143.111.14
+++ shijiazhuang
menu = 石家庄
title = 石家庄:111.11.64.142
host = 111.11.64.142
++ northeast
menu = 东北区
title = 东北区
+++ dalian
menu = 大连
title = 大连:211.140.192.4
host = 211.140.192.4
++ east
menu = 华东区
title = 华东区
+++ hefei
menu = 合肥
title = 合肥:211.138.191.65
host = 211.138.191.65
+++ nanjing
menu = 南京
title = 南京:120.195.118.1
host = 120.195.118.1
+++ jinan
menu = 济南
title = 济南:120.192.97.186
host = 120.192.97.186
+++ hangzhou
menu = 杭州
title = 杭州:111.1.33.222
host = 111.1.33.222
+++ nanchang
menu = 南昌
title = 南昌:218.204.68.41
host = 218.204.68.41
+++ jiangsu
menu = 江苏
title = 江苏:112.22.15.226
host = 112.22.15.226
++ south
menu = 中南区
title = 中南区
+++ zhengzhou
menu = 郑州
title = 郑州:211.142.127.33
host = 211.142.127.33
+++ guangzhou
menu = 广州
title = 广州:211.139.145.254
host = 211.139.145.254
+++ wuhan
menu = 武汉
title = 武汉:211.137.79.134
host = 211.137.79.134
+++ nanning
menu = 南宁
title = 南宁:218.204.21.10
host = 218.204.21.10
++ southwest
menu = 西南区
title = 西南区
+++ chengdu
menu = 成都
title = 成都:111.9.16.23
host = 111.9.16.23
+++ chongqing
menu = 重庆
title = 重庆:218.206.10.211
host = 218.206.10.211
++ northwest
menu = 西北区
title = 西北区
+ IDC
menu = IDC线路
title = IDC线路
++ wuxiIDC
menu = 无锡IDC
title = 无锡IDC
+++ wuxiIDCdianxin
menu = 无锡电信
title = 无锡电信:221.228.82.70
host = 221.228.82.70
+++ wuxiIDCBGP
menu = 无锡AC_BGP
title = 无锡AC_BGP:103.21.119.48
host = 103.21.119.48
+++ wuxiliantong
menu = 无锡联通
title = 无锡联通:122.192.69.117
host = 122.192.69.117
++ hulanIDC
menu = 呼兰IDC
title = 呼兰IDC
+++ hulanIDCdianxin
menu = 呼兰电信
title = 呼兰电信:101.227.69.37
host = 101.227.69.37
+++ hulanIDCBGP
menu = 呼兰AC_BGP
title = 呼兰AC_BGP:103.20.251.7
host = 103.20.251.7
+++ hulandianxinBGP
menu = 呼兰电信BGP
title = 呼兰电信BGP:114.141.133.146
host = 114.141.133.146
++ nanhuiIDC
menu = 南汇IDC
title = 南汇IDC
+++ nanhuiIDCdianxin
menu = 南汇电信
title = 南汇电信:222.73.124.239
host = 222.73.124.239
+++ nanhuiIDCliantong
menu = 南汇联通线路
title = 南汇联通:140.207.216.89
host = 140.207.216.89
+++ nanhuiIDCBGP
menu = 南汇电信BGP线路
title = 南汇电信BGP:114.141.132.115
host = 114.141.132.115
++ jinhaiIDC
menu = 金海IDC
title = 金海IDC
+++ jinhaiIDCdianxin
menu = 金海电信线路
title = 金海电信:114.80.200.47
host = 114.80.200.47
+++ jinhaiIDCliantong
menu = 金海联通线路
title = 金海联通:140.207.213.59
host = 140.207.213.59
++ beiaiIDC
menu = 北艾IDC
title = 北艾IDC
+++ beiaiIDCdianxin
menu = 北艾电信线路
title = 北艾电信:114.80.88.51
host = 114.80.88.51
+++ beiaiIDCliantong
menu = 北艾联通线路
title = 北艾联通:112.65.240.161
host = 112.65.240.161
++ kunshanIDC
menu = 昆山IDC
title = 昆山IDC
+++ kunshanIDCdianxin
menu = 昆山电线线路
title = 昆山电信:180.97.81.242
host = 180.97.81.242
+++ kunshanIDCliantong
menu = 昆山联通线路
title = 昆山联通:112.80.41.244
host = 112.80.41.244
++ jinqiaoIDC
menu = 金桥IDC
title = 金桥IDC
+++ jinqiaoIDCdianxin
menu = 金桥电信线路
title = 金桥电信:180.153.240.38
host = 180.153.240.38
+++ jinqiaoIDCliantong
menu = 金桥联通线路
title = 金桥联通:112.65.234.34
host = 112.65.234.34
++ luguIDC
menu = 鲁谷IDC
title = 鲁谷IDC
+++ luguIDCBGP
menu = 鲁谷BGP线路
title = 鲁谷BGP:24.202.141.142
host = 124.202.141.142
++ nujiangIDC
menu = 怒江IDC
title = 怒江IDC
+++ nujiangIDCyidong
menu = 怒江移动线路
title = 怒江移动:221.181.64.2
host = 221.181.64.2
++ changshaIDC
menu = 长沙IDC
title = 长沙IDC
+++ changshaIDCdianxin
menu = 长沙电信线路
title = 长沙电信:124.232.151.250
host = 124.232.151.250
++ yizhangIDC
menu = 亦庄IDC
title = 亦庄IDC
+++ yizhuangIDCBGP
menu = 亦庄BGP线路
title = 亦庄BGP:43.240.245.247
host = 43.240.245.247
++ xianggangIDC
menu = 香港IDC
title = 香港IDC
+++ xianggangIDCBGP
menu = 香港BGP线路
title = 香港BGP:118.193.128.4
host = 118.193.128.4
+++ wuxiMPLS
menu = 无锡AC_BGP
title = 无锡MPLS:10.234.1.254
host = 10.234.1.254
EOF
chmod +x /etc/init.d/smokeping
chkconfig smokeping on
chkconfig httpd on
/etc/init.d/httpd start
/etc/init.d/smokeping start
if [ $? -eq 0 ];then
echo -e "\\033[32m smokeping setup successfull URR：$IP/smokeping\\033[0m"
fi
四、效果图及图表参数解释
4.1效果图
4.2 图表参数解释
4.2.1 median rtt:中间数不是平均值。Smokeping有多种类型的探针，探针在默认的设置下，每300秒向目标设备发送20测探测数据包。
如果这20个数据包都返回的话，它就记录下了20个RTT，那么Median RTT就是第十个包的RTT；
如果有5个包丢失的话，那么Median RTT就是第八个返回的包的RTT值。
4.2.2 Avg RTT：它是每一个测试回合中所有RTT的算术评价值。
4.2.3 Avg pkt loss：丢包率=丢弃的数据包/发送总共的数据包*100%
4.2.4 Probe:20ICMP Echo Pings(56 Bytes)every
每一个绿色的短横线都是一个测试回合60秒内用ping测试20次。绿色画出的是中间数的位置，一个回合中的其它值都在它附近被以灰度的形式被刻画。