iis 7 - ASP.net web services (.asmx) and parallel processing -

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iis 7 - ASP.net web services (.asmx) and parallel processing -

we have written web service method returns graphic images generated using microsoft wpf (hence sta model). working absolutely fine apart load balancing. when multiple user seek access @ same time, of users gets error message ( error 503).

anybody knows how can improve handle multiple client requests (>1000)? can utilize parallel processing technique run threads on different cpu processor (64bit server 4 core processes)

iis-7 asmx parallel-processing

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