In influxdb 1.5, the /write path can accept multiple points in a POST request.
What is a reasonable maximum payload size for this? 100 point? 1,000? 10,000? More?
I had some problems with 25000 and more points. The points were written by a little python script out of a pandas dataframe. The code was near by the example from influx (dataframe to influxdb with python). 
It did not matter how many lines and columns were present, the error was reproducible over the sum to be written points.
It is better to stay below 20000 points per transfer to avoid exceptions.
What's the maximum number of points I should write to influxdb in a single request?