October 2020
Intermediate to advanced
261 pages
5h 32m
Chinese
Content preview from Graphite监控
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100
｜
第
5
章
Graphite
用户界面
连接线图（
Connected
）
这是
Graphite
用户版（展示效果上的）的“连接数据点”，当
linemode=connected
时，
将跨越图表中的间隙来连接可用的数据点（参见图
5-31
）。虽然我已经提到过，但值得
重申的是，这个模式不使用插值。
图5-31：在间隙上使用连接线
连接线的限制
connectedLimit()
函数对连接线线型图进行补充。启用后，将要求用户输入一个数值，
该值指定允许的最大连续空值数。如果间隙包含太多的空值，将不会使用连接线“跨越
间隙”。
以
0
值表示空值
当
drawNullAsZero=true
时，
Graphite
会将所有空数据点转换为一系列零值（参见图
5-32
）。如果要对多组数据进行合并，例如，将两组数据用
sumSeries()
函数相叠加，这
种做法将特别有用。
面积图和堆叠图
面积图是比较和对比多组数据的有效方法。它还有助于可视化一组指标集合的聚合结果，
例如，服务器上不同的内存状态是如何相加的。
Graphite
为我们提供了几种不同的模式
来将数据展现为二维区域 ：仅限第一、堆叠和全部。这些都位于“面积图模式”（
Area
Mode
）子菜单内（参见图
5-33
）。
“图表选项”菜单
｜
101
图5-32：将空值转换为0值
图5-33：面积图模式 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.