Extremely high memory usage and CPU since upgrade to 7611

Problem reported by Paul White - 11/10/2020 at 9:53 AM

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One of my users reported that the server was running slow, so I remoted in and found that smartermail was using 16GB of RAM. Normally it only uses 1 - 2 GB. Now its using 34 GB of ram. CPU is high too. Its all on the smartermail process. when I look at the performance monitor I see a lot of read and writes to MailProcessing folders. The box has about 300 users on it. This just started happening. I upgraded to the latest version 7611 a few days ago. I already rebooted, same issue, reinstalled the 7611. Same issue. Any thoughts?

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Paul White Replied

11/10/2020 at 11:10 AM

After about an Hour it slowly dropped back down to a reasonable level.

Any clue as to what would cause the sudden spike. For a while I was sitting at 94% memory usage, close to crashing the server.

John Marx Replied

11/10/2020 at 4:31 PM

I would expect it was indexing mailbox files.

Paul White Replied

11/10/2020 at 4:49 PM

Is it normal for it to be that intensive with indexing? Does that run on a schedule? Is that something I can control?

John Marx Replied

11/10/2020 at 5:49 PM

I've seen indexing peg a CPU on a new install/upgrade. It can take a few hours.

It is also possible you had a large amount of email (e.g., spam) or a lot of attempts to log in that were unauthorized. I've seen those as other options for high CPU's.

Michael Replied

11/10/2020 at 9:25 PM

Same. Also, I've seen indexing eat up a lot of CPU on new install/upgrade. I agree I've seen it take many hours to normalize. You can monitor the indexing threads to see progress.

Kyle Kerst Replied

11/11/2020 at 4:51 PM

Employee Post

Indexing should not eat up all of the available memory on a server, and so it might be worth checking how many threads you have allotted to indexing in Manage>Troubleshooting>Options. Its possible though a major influx of email was the root cause here, as this would introduce load on both the spool and indexing engines. If you see this again please submit a ticket with us - we'd be happy to dig into it for you and get you some answers. Have a good one!

Kyle Kerst IT Coordinator SmarterTools Inc. www.smartertools.com

Paul White Replied

11/12/2020 at 5:06 PM

I looked at my indexing settings, they were set to 14 threads. I lowered this to 8 threads. Seems to have dropped memory usage. If it happens again I will let you know.

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