web applications - How to graph mixed data series with total 500k points -

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i need draw graph of response time of various requests webapp. have parsed access logs application produce data file in following format:

datetime,responsetime,requesttype

for example:

09/nov/2010:21:00:00,0.002,event 09/nov/2010:21:00:01,0.040,action

my data file has 500k lines different request types mixed up. lines ordered time.

what best tool drawing 500k points on 1 graph line per request type, time along x axis , response time along y axis?

in end wrote java program parse data fewer data points graph in excel. code specific particular use case won't bother paste in here.


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