获取splunk 的 latency time

想要获取Splunk 的latency time，只需要知道_indextime 和 _time就可以了，latency = _indextime- _time

可以直接用query在Splunk查询：

1.index=app host="****" | eval diff= _indextime - _time| search diff>60| stats count, avg(diff), min(diff), max(diff) by host

2.index=app host="****" | eval diff= _indextime - _time | eval indextime=strftime(_indextime,"%Y-%m-%d %H:%M:%S") |eval capturetime=strftime(_time,"%Y-%m-%d %H:%M:%S") | table indextime capturetime diff