我将注释重写为答案. 在Windoze上的GNU Octave中首次进行绘制时，存在长时间的延迟是一个已知的问题: http://savannah .gnu.org/bugs/?45458

I rewrite the comment as answer. A long delay when plotting for the first time in GNU Octave on Windoze is a known problem: http://savannah.gnu.org/bugs/?45458

其原因是fontconfig缓存必须构建一次.之后，绘图应照常进行.

The reason for this is that the fontconfig cache has to be build once. After that plotting should be fast as usual.