主题：为什么一秒轮询模式,实际运行不是一秒钟

我设的图表交易,1秒轮询,提前N秒下单

时常漏单,有信号箭头,但不发指令,排除了信号闪烁问题,

经debugfile之后,发现,时间的信号出现得间距很大,远非1秒

2015-12-23 09:25:02.663    bkk0close:2469.00spp0ww2ch0.000cl0.000hl0.000
2015-12-23 09:25:05.658    bkk0close:2469.80spp0ww2ch0.000cl0.000hl0.000
2015-12-23 09:25:08.685    bkk0close:2469.80spp0ww2ch0.000cl0.000hl0.000
2015-12-23 09:25:13.209    bkk0close:2469.80spp0ww2ch0.000cl0.000hl0.000
2015-12-23 09:25:17.780    bkk0close:2469.80spp0ww2ch0.000cl0.000hl0.000
2015-12-23 09:25:19.277    bkk0close:2469.40spp0ww2ch0.400cl0.000hl0.400
2015-12-23 09:25:20.806    bkk0close:2469.40spp0ww2ch0.400cl0.000hl0.400
2015-12-23 09:25:22.304    bkk0close:2468.60spp0ww2ch1.200cl0.000hl1.200
2015-12-23 09:25:23.817    bkk0close:2468.60spp0ww2ch1.200cl0.000hl1.200

谢谢解答为盼