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Extremely high memory usage and CPU since upgrade to 7611
Problem reported by Paul White - 11/10/2020 at 9:53 AM
Submitted
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
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.
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John Marx Replied
I would expect it was indexing mailbox files.
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Paul White Replied
Is it normal for it to be that intensive with indexing?  Does that run on a schedule?  Is that something I can control?
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John Marx Replied
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.
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Michael Replied
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.
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Kyle Kerst Replied
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 System/Network Administrator SmarterTools Inc. (877) 357-6278 www.smartertools.com
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Paul White Replied
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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