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Editorial Team
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Asked: 2026-05-28T18:01:47+00:00

We have application that runs 24h per day and 7 days per week. Sometimes

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We have application that runs 24h per day and 7 days per week. Sometimes CPU go to 100% and then go back to 80%. The same with RAM. Is it smart to manually call GC.Collect after few hours or betterto leave it automatically.

We are using C# 2010, SQL 2008 and Fluent Nhiberanet. This is desktop application.

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  1. Editorial Team

    I wouldn’t call it smart to call GC.Collect() “every few hours”, or “when RAM usage goes to high”, but I’d call it smart to call it whenever you are in a position of having more information than the GC, some exmaples

    • You know, this big chunk of RAM or these many small objects you just allocated, will not be used again and you are in a singlethreaded environment and (ofcourse) you have cleared all your references
    • You know, that a “GC break” will hurt less right now, than a bit later

    The GC is a highly optimized peace of code and quite smart, but it can only work on information it has.

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