17.0.6878 running 50-100% CPU
Problem reported by Chris Le - November 6 at 9:40 AM
Submitted
We updated to 17.0.6878 and noticed the smartermail service is running hot, anywhere between 50%, 70% and even 100% CPU, resulting in us needing to reboot it to make the server stable again. Is anyone else having this issue? Any idea what could be causing this?

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Thomas Lange Replied
Hi Chris,

right now - outside our business hours - our SmarterMail v17.0.6878 is running betwenn 45-60% CPU,
(SmarterMail Enterprise / 250 users - around 130 users currently in use, EAS+EWS addons). Operating System is Windows Server 2012R2 on VMware ESXi 6.5.

I will keep an eye on CPU tomorrow during our businesss hours, at least we did not encounter performance/stability issues yet in v17. (btw: In the past with SM16 we had some CPU/IIS Worker Process utilization/performance issues, but these were already solved some SM16-minor-releases ago).

Thomas
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Chris Le Replied
This version 17 server has less than 25 users.

Our production version 15 servers have 10K users and run at 20% CPU
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Thomas Lange Replied
today during business hours I had an eye on process monitor at our Windows 2012R2-SmarterMail production server - running v17.0.6878: SmarterMail-process CPU was between 45-75% - most times between 50-60%.
Due to the fact that we do not receive any complaints about performance yet - this could normal.

But if I remember right, at prior v16 of Smartermail CPU was less... probably 20-30%.

If have no idea why your smaller v17 server has such high CPU... and if there are performance issues going up to 75 or 100% CPU that should not be ok - is there any kind of re-indexing of huge email-accounts going on at your SMv17-server?
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Chris Le Replied
We were running SM16 on this particular server before upgrading to the BETA. It is not busy at all and I never noticed any high CPU usage before. For some reason, it was running at 100% and the entire server was unresponsive, requiring a reboot. To my memory, I have never seen Smartermail do that before in my 15+ years using this product. So something weird is going on with this latest BETA build version. I will see what happens on the next patch.
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Andrea Rogers Replied
Employee Post
Hi guys,

In SmarterMail 17.x, we've updated the indexing format. On your initial upgrade to 17.x (from any earlier major release), ALL user accounts will be reindexed in order to utilize this new format. As the reindexing occurs, you will see a temporary spike in CPU. However, please note that a user's experience and the overall server performance should not be negatively impacted, as the indexing thread is prioritized lower than all other threads. In addition, users will still be able to search while this one-time bulk reindex occurs. This is because a user's account will use the old indexing format for searches if the reindexing has not yet been performed for their account. As soon as their account has finished reindexing, it will simply switch to the updated format.

This information should have been noted in our BETA threads previously, and I apologize that it was not. I've since added this information right next to the installer link for the BETA release announcement thread (since it doesn't impact just a singular build). The CPU spike is expected and will rectify itself once the reindexing is done. 

I hope this helps!

Andrea Rogers
Communications Specialist
SmarterTools Inc.
(877) 357-6278

www.smartertools.com

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Chris Le Replied
Hi Andrea,

I actually started with the 17.0.6870 version, and then patched to 17.0.6878. So I think all the re-indexing should have been done a couple weeks ago. Everything was running fine until the server became unresponsive yesterday, I checked and it was at 100% CPU so I had to reboot it. It has been stable since but still running at about 70% CPU now. 

Now that you mentioned it, my search inbox search is not really working.
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Tim Uzzanti Replied
Employee Post
Can you look at the reports in SmarterMail and provide the chart of CPU usage before and after.  We have a new build out today with more optimizations and fixes.  Every build moving forward is small fixes and optimizations until release on Dec 3rd.  If we see a dramatic jump for a long period of time we want to profile your installation.  Thanks for testing things out!
Tim Uzzanti
CEO
SmarterTools Inc.
(877) 357-6278
www.smartertools.com
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Chris Le Replied
SM 16
10/20 0%
10/21 0%
10/22 0%
10/23 0%
10/24 0%

SM 17 BETA
10/25 38.46%
10/26 63.75%
10/27 63.83%
10/28 63.88%
10/29 63.92%

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