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https://issues.apache.org/jira/browse/SCB-1210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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YaoHaishi resolved SCB-1210.
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Resolution: Fixed
> improve the average latency precision of the metrics log
> --------------------------------------------------------
>
> Key: SCB-1210
> URL: https://issues.apache.org/jira/browse/SCB-1210
> Project: Apache ServiceComb
> Issue Type: Improvement
> Reporter: YaoHaishi
> Assignee: YaoHaishi
> Priority: Major
> Fix For: java-chassis-1.2.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> For a long statistical period and low tps situation, for example, metrics
> period is 60 sec and there are only two invocation each costs 1.5 second to
> process. The metrics log print the max latency correctly(1500ms), but the
> printed average latency is 0.
> The cause is that a int variable is used to calculate the tps distributed
> into every second and the average latency is calculated by (tps distributed
> into every second)/(total latency distributed into every second). And in such
> situation, the tps data distributed to every second is 0, so the average
> latency is 0.
> The tps data should be stored in a double variable and the metrics log format
> should be adjust slightly.
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