RRDtool绘图——graph参数使用之经典实例

来源：互联网发布：易语言软件注册编辑：程序博客网时间：2024/04/30 09:59

by：ysuncn（欢迎转载，请注明原创信息）

看了一些讲RRDtool绘图命令graph用法的文章，有些版本过时，命令不同了，还有些就像我前边写的“Hello World”里边的作图一样，泛泛带过，针对性不强。这里献给大家两个自认为经典的例子，希望对大家有帮助：）ps：如果自己操练，改与数据库相关的就ok了。

实例1：DEF提取数据＋理解时间粒度（间隔）对作图的影响。

rrdtool graph def.png /
   --end now --start end-120000s --width 400 /
   -t "DEF应用举例+不同时间粒度作图对比" /
   --font TITLE:14:FZZHYJW.ttf /
   DEF:dsa=/home/rrdtool/data/router1.rrd:dsa:AVERAGE /
   DEF:dsb=/home/rrdtool/data/router1.rrd:dsb:AVERAGE:step=1800 /
   DEF:dsc=/home/rrdtool/data/router1.rrd:dsc:AVERAGE:step=7200 /
   LINE1:ds0a#0000FF:"default resolution 300 seconds/l" /
   LINE1:ds0b#00CCFF:"resolution 1800 seconds per interval/l" /
   LINE1:ds0c#FF00FF:"resolution 7200 seconds per interval/l"

出图：













实例2：VDEF、CDEF用法＋坐标轴标签＋横纵线条＋报告生成＋更新时间

rrdtool graph graph.png /
    --end now --start end-120000s --width 400 /
    -t "VDEF、CDEF应用举例" /
    --font TITLE:14:FZZHYJW.ttf /
     --x-grid MINUTE:30:HOUR:4:HOUR:4:0:%H:%M /
     # 每30分钟一条线，每4小时一条主线，4小时一个标签标于主线下方，标签格式“小时:分钟”
    -Y /
   DEF:ds0=/home/rrdtool/data/router2.rrd :Inbound :AVERAGE /
   DEF:ds1=/home/rrdtool/data/router2.rrd :Outbound:AVERAGE /

   VDEF:ds0max=ds0,MAXIMUM /
   VDEF:ds0avg=ds0,AVERAGE /
   VDEF:ds0min=ds0,MINIMUM /
   VDEF:ds0pct=ds0,95,PERCENT /
   VDEF:ds1max=ds1,MAXIMUM /
   VDEF:ds1avg=ds1,AVERAGE /
   VDEF:ds1min=ds1,MINIMUM /
   VDEF:ds1pct=ds1,95,PERCENT /

   CDEF:ds0bits=ds0,8,* /
   CDEF:ds1bits=ds1,8,* /

   COMMENT:"          " /
   COMMENT:"Maximum    " /
   COMMENT:"Average    " /
   COMMENT:"Minimum    " /
   COMMENT:"95th percentile/l" /

   AREA:ds0bits#00FF00:"Inbound " /
   GPRINT:ds0max:"%6.2lf %Sbps" /
   GPRINT:ds0avg:"%6.2lf %Sbps" /
   GPRINT:ds0min:"%6.2lf %Sbps" /
   GPRINT:ds0pct:"%6.2lf %Sbps/l" /

   LINE1:ds1bits#FF0000:"Outbound" /
   GPRINT:ds1max:"%6.2lf %Sbps" /
   GPRINT:ds1avg:"%6.2lf %Sbps" /
   GPRINT:ds1min:"%6.2lf %Sbps" /
   GPRINT:ds1pct:"%6.2lf %Sbps/l" /

   COMMENT:"/s" /
   VRULE:1186562026#000000:x-mark /
   HRULE:1700000000#0000FF:y-mark /
   COMMENT:"         update time/: `date /"+%Y/%m/%d %H/:%M/:%S/"`" COMMENT:"/l"

出图：