diff options
| author | Costa Tsaousis (ktsaou) <costa@tsaousis.gr> | 2015-09-22 01:58:15 +0300 |
|---|---|---|
| committer | Costa Tsaousis (ktsaou) <costa@tsaousis.gr> | 2015-09-22 01:58:15 +0300 |
| commit | 0521bdfde3864c9d17b534d9b2a2e352c3245ca1 (patch) | |
| tree | b25909bb4873d81a1a962e3abcd39726e9b810cc /README.md | |
| parent | b8a762277312f74d257ff4bf71ae7ea697b09d8f (diff) | |
updated readme
Diffstat (limited to 'README.md')
| -rwxr-xr-x | README.md | 13 |
1 files changed, 8 insertions, 5 deletions
@@ -37,12 +37,15 @@ Here is a screenshot: Every chart, every value, is updated every second. Of course, you can control collection period per module. - **netdata** can perform several calculations on each value collected: + **netdata** can perform several calculations on each value (dimension) collected: - - **absolute**, the collected value should be stored as collected - - **incremental**, the difference of the collected value to the last collected value should be stored (this is used for counters that always get incremented - netdata automatically interpolates these values so that small delays at the data collection layer will not affect the quality of the result - also, **netdata** detects arithmetic overflows and presents them properly at the charts) - - **percentage of absolute row**, stores the percentage of the collected value, in the sum of all collected values of the chart - - **percentage of incremental row**, stores the percentage of this value, in the sum of the the **incremental** differences of the chart + - **absolute**, stores the collected value, as collected (this is used, for example for the number of processes running, the number of connections open, the amount of RAM used, etc) + + - **incremental**, stores the difference of the collected value to the last collected value (this is used, for example, for the bandwidth of interfaces, disk I/O, i.e. for counters that always get incremented) - **netdata** automatically interpolates these values so that small delays at the data collection layer will not affect the quality of the result - also, **netdata** detects arithmetic overflows and presents them properly at the charts. + + - **percentage of absolute row**, stores the percentage of the collected value, over the sum of all dimensions of the chart. + + - **percentage of incremental row**, stores the percentage of this collected value, over the sum of the the **incremental** differences of all dimensions of the chart (this is used, for example, for system CPU utilization). - **visualizes QoS classes automatically** |