我启动了 15 个 Python 线程，但 top 命令说只有 1 个正在运行：
top -p 4176，然后输入 H
top - 23:46:56 up 46 days, 5:43, 1 user, load average: 1.16, 1.07, 1.01
Tasks: 16 total, **1 running**, 15 sleeping, 0 stopped, 0 zombie
Cpu(s): 29.8%us, 0.8%sy, 0.0%ni, 68.4%id, 0.9%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8085788k total, 7944132k used, 141656k free, 140756k buffers
Swap: 7811068k total, 0k used, 7811068k free, 6902536k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
29771 scraping 20 0 341m 148m 3460 S 16.6 1.9 27:46.68 python
29760 scraping 20 0 341m 148m 3460 S 16.3 1.9 27:45.82 python
29768 scraping 20 0 341m 148m 3460 S 9.0 1.9 28:15.11 python
29767 scraping 20 0 341m 148m 3460 S 8.7 1.9 27:47.97 python
29770 scraping 20 0 341m 148m 3460 R 8.0 1.9 28:05.83 python
29758 scraping 20 0 341m 148m 3460 S 7.7 1.9 28:02.30 python
29761 scraping 20 0 341m 148m 3460 S 7.0 1.9 27:40.68 python
29759 scraping 20 0 341m 148m 3460 S 6.7 1.9 28:21.71 python
29763 scraping 20 0 341m 148m 3460 S 5.7 1.9 28:11.03 python
29769 scraping 20 0 341m 148m 3460 S 5.7 1.9 27:59.36 python
29757 scraping 20 0 341m 148m 3460 S 4.3 1.9 28:01.46 python
29762 scraping 20 0 341m 148m 3460 S 4.0 1.9 28:03.70 python
29765 scraping 20 0 341m 148m 3460 S 4.0 1.9 27:37.34 python
29766 scraping 20 0 341m 148m 3460 S 1.0 1.9 28:05.28 python
29764 scraping 20 0 341m 148m 3460 S 0.3 1.9 27:44.07 python
4761 scraping 20 0 341m 148m 3460 S 0.0 1.9 0:00.61 python
我想知道为什么只有 1 个正在运行的任务而不是 15/16？
非常感谢。