When using index=blah | sitimechart dc(field1) by field2 It saves every single element for field1 concatenated into a new field called psrsvd_vm_field1. For me this makes for an insanely inefficient summary index with millions and millions of useless entries in the psrsvd_vm_field1 field. How can I streamline this so that it doesn't store all that information and have to sort through it every time I chart the summarized data.
Well it depends on what you're trying to achieve, because if you need to be able to run a dc over any time span then you will need that inefficient mv field. But if you're only interested in keeping a specific time interval in your summary then going for the results of a timechart would do the trick for you.
It'll only save _time and dc value instead of saving _time, dcand all values.