There is a limit to the number of renderer processes that Chromium will create. This prevents the browser from overwhelming the user's computer with too many processes. The limit is proportional to the amount of memory on the computer, and may be as high as 80 processes. Because of the limit, a single renderer process may be dedicated to multiple sites. This reuse is currently done at random, but future versions of Chromium may apply heuristics to more intelligently allocate sites to renderer processes.
我这的试验结果,Disable site isolation设置为disable:
如果加了--process-per-tab命令行参数,打开"同一个地址"的2个标签页,这两个标签页会公用同一个进程;
如果去掉--process-per-tab命令行参数,重启cent后,打开"同一个地址"的2个标签页,这两个标签页是不同的2个独立进程;