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large memory leak in non paged pool (tcpip.sys server 2019)

Dufley, Gary - Prinovis UK Ltd 21 Reputation points
2020-07-30T07:23:32.453+00:00

Hi

we have a server 2019 install running on vmware that is creating a large memory leak in the on paged pool, it increases over time and requires a reboot every 24-36 hours

poolmon shows the the tags involved are AleE, AleD, AlsT and Ala4, which I believe are tcpip.sys

the problem does not exist on a newly configured sever but only when the applications are used (Kepware OPC)

I have have created another server, but this also exhibits the same behaviour

I have contacts Kepware, who cannot find any leaks in their runtime processes

can anyone suggest anything please

Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
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  1. Fehrs, Tom 6 Reputation points
    2021-03-23T13:28:36.13+00:00

    Kepware has been working with Microsoft on this issue. This is not an issue with the Kepware OPC product.

    Microsoft has identified a code defect in the Windows Filtering Platform (WFP) component and they have indicated that a public fix for this issue will be available the 3rd week of May.

    1 person found this answer helpful.
  2. TimCerling(ret) 1,156 Reputation points
    2020-07-30T12:52:13.677+00:00

    Did they try to duplicate your environment to test in a similar environment? The fact that you can replicate it by building a second server is pretty telling. It really does sound like you need to push harder on Kepware.

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