RAM Spike

Problem reported by J Lee - 11/12/2025 at 9:49 AM

Submitted

Is anyone else noticing a RAM spike on Build 9434? I first noticed it on Build 9420. Rebooting once every 3 or 4 days keeps the issue in check, but if there is no reboot, the RAM continues higher and higher.

SmarterMail 9434

Windows Std 2019

J. Sebastian Lee Service2Client LLC 6333 E Mockingbird Ste 147 Dallas, TX 75214 - 877.251.3273

6 Replies

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Richard Laliberte Replied

11/12/2025 at 10:24 AM

I remember a while back, earlier this year maybe, some people mentioning the same type of issue. At that time one of the members created and shared an automated script that could be used. I can't find it right now, but hopefully someone still has it.

Obviously one of those things that got fixed then got un-fixed for some reason lol i was waiting for this weeks update (since it's supposed to be very large) to upgrade from 9406, but if this issues is popping up again guess i'll be waiting longer ...

J Lee Replied

11/20/2025 at 12:50 PM

Hi Richard

Thank you for the reply. I'm still seeing this issue on 9448

J. Sebastian Lee Service2Client LLC 6333 E Mockingbird Ste 147 Dallas, TX 75214 - 877.251.3273

Gerardo Altman Replied

11/21/2025 at 2:26 AM

Are you running a VM or bare metal?
If VM whats the hypervisor ?

""G

Jason Replied

11/22/2025 at 4:58 AM

We have been seeing this issue since October 2024. Support informed us at the end of October 2025 that they were testing an in house server with the same issue. Unfortunately, we are still struggling with the same behavior. Several of our servers must be rebooted every 1–4 days. This is happening on Linux as well as Windows servers.

J Lee Replied

11/22/2025 at 11:42 AM

Bare Metal, Yes SM had this issue a few years ago. Ours if not rebooted will reach 90+% RAM usage and make the server unusable. After reboot it drops back down to 20% - 30%. It seems that new work is staying in RAM after completed.

J. Sebastian Lee Service2Client LLC 6333 E Mockingbird Ste 147 Dallas, TX 75214 - 877.251.3273

Gerardo Altman Replied

11/22/2025 at 4:01 PM

Interesting.

something to note when running in KVM there is a known issue with QEMU and De-frag/ reclaim consuming all the memory.

i cant say that this may also be an issue on physical hardware but you never know.

posted a link just in case its of any help.

https://www.alldiscoveries.com/how-to-fix-high-ram-usage-during-defrag-on-windows-server-virtualized-with-qemu/

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