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We have a ASP.NET MVC3 site on a 8GB memory Windows server 2019, when I enable 32bit applications on of IIS app pool, the site running well, cpu and memory use(about 300MB) of w3wp.exe also low and noraml. But if I disable 32bit applications of IIS app pool, the memory use will rise to 99%. Anyone knows why? I dumped memory when up to 99% by perfview, it says System.Globalization object consumed the memory, but I'm not sure. Please help, Thanks in advance! memory dump

memory dump2

Sven
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  • you may want to search existing Q&A's and potential pose this question to the sister site [ServerFault community](https://serverfault.com/) as it pertains to administering and monitoring. please review the [ServerFault on-topic](https://serverfault.com/help/on-topic). Having said, I wouldn't necessarily construe this as off-topic to SO. – Brett Caswell Mar 26 '20 at 07:56
  • as a wild guess, does your MVC application use a bundler that is registered as an IIS or ASP.NET Module? – Brett Caswell Mar 26 '20 at 08:03
  • @BrettCaswell no bundler – Sven Mar 26 '20 at 09:02
  • Could you please paste a screenshot with all columns included (Inc %, Inc etc.)? And please clear the GroupPats text box so Perfview will do no grouping. Also, which type of memory are you checking? Is it private bytes? – Sebastian Mar 26 '20 at 11:57
  • dumped w3wp.exe process memory, see 2nd image. – Sven Mar 27 '20 at 01:04

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