JavaFX XYChart with CategoryAxis Performance Issue

Tai Hu at
Wed Aug 31 21:39:14 UTC 2016

      That is my bad. Here is a simple self-contained test. I could plot 10000 in 40 seconds (Our goal is to bring down to 5 seconds) on my MacBook Pro (i5 CPU). If I increased number to 100K (that will be the upper limit for our application), chart did not render in 6 minutes and I have to kill the program. By the way, I am using JDK 8u102.


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> On Aug 31, 2016, at 5:04 PM, Jonathan Giles <jonathan.giles at> wrote:
> Without a small snippet of code that reproduces the problem, not really. If you can create a self-contained test that demonstrates the problem, I can take a look at it.
> -- Jonathan
> On 1/09/16 7:08 AM, Tai Hu wrote:
>> I am using JavaFX XYChart to plot some big data set (10000+ points). If both X and Y axis are NumberAxis, my line chart could render in a reasonable time, if I set chart.setCreateSymbol(false). However, if one of axis is a CategoryAxis, then performance is horrible. I think the problem is CategoryAxis creates a tick for each one of 10000+ strings. I already tried to set tick visibility to false, which help a bit, but still too slow. Is there anyway to improve this?
>> Thanks,
>> Tai

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