when cascade training the window size is form 24 to 30, the program is runnging very very slowly [closed]

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Hi,

I use opencv cascade train like this:

./opencv_createsamples -vec righttoppointstraindata.vec -info info.dat
/home/opencv2461/bin/opencv_traincascade -data model -vec righttoppointstraindata.vec -bg bg.txt -numPos 100 -numNeg 400 -numStages 13 -w 30 -h 30

it runs but when after TRAINING 5-stage it runs very very slowly, like this:

===== TRAINING 6-stage =====
<BEGIN
POS count : consumed   100 : 100
    it has been in 6 stage for 2 hours, but has not finished the 6 stage, why?
the 5-stage is like this:
===== TRAINING 5-stage =====
<BEGIN
POS count : consumed   100 : 100
NEG count : acceptanceRatio    400 : 0.0132022
Precalculation time: 7
+----+---------+---------+
|  N |    HR   |    FA   |
+----+---------+---------+
|   1|        1|        1|
+----+---------+---------+
|   2|        1|        1|
+----+---------+---------+
|   3|        1|   0.0275|
+----+---------+---------+
END>