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ISAPI dll performance

ISAPI dll performance

ISAPI dll performance

I've been looking around on the net for a while and I must be missing something. I have an ISAPI dll written in C++ that runs great under IIS 5.1 (windows XP). I setup a Windows Server 2003 R2 box so that I could get "server level performance". Well...needless to say, it's not happening the way I planned.

After installing Windows 2003, I setup a virtual directory within the default website and pointed to the location of my dll's. I added the IUSR_MachineName account to have read/write access to the directory where my dll's were stored and did an iisreset for good measure. I didn't really expect a huge speed increase because it's already performing the tasks in 3-5 seconds. My main concern was concurrency. The task now takes 17-25 seconds. If it was just a second or two, I could handle it...but this is ridiculous.

I loaded up process monitor to check for any obvious issues. What I found is lsass.exe performing registry queries (14-22 seconds worth) throughout the duration of my dll's task. I was mistakenly under the impression that giving the IUSR account permissions to the directories would prevent this from happening.

Does anyone know how to stop lsass??? :)


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