question

DufleyGaryPrinovisUKLtd-6520 avatar image
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DufleyGaryPrinovisUKLtd-6520 asked JO-4358 commented

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

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
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Looking for a follow-up from Microsoft on this. It's been plaguing one of our 2019 servers. Thanks.

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TimCerling-5039 avatar image
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TimCerling-5039 answered MitchellTerry-3656 commented

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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I'm seeing the same symptoms.

Server 2019 Datacenter in AWS. Only thing loaded on this box is our proprietary Java software.

We Had TrendMicro loaded, but uninstalled recently. This has been going on for about 3 months for us too.

Poolmon has the same exact Tags causing High Usage. any insight is helpful

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FehrsTom-4191 avatar image
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FehrsTom-4191 answered JO-4358 commented

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.

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Thank you very much for the info

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Hi did they actually released the fix mentioned here on May?
by any chance do you have the Hotfix number?

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The fix, KB5003703, will be included in the windows update with a release date of 6/15/2021.

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JO-4358 avatar image JO-4358 BrookmanGary-3282 ·

awesome, thank you for the information

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