NetXMS CPU Usage High
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Hi Tatjana,
Both Servers are Virtual with same configuration and OS (Centos 7). Please see the node stats of both Server below.
Server with issue:
NetXMS Server Remote Console V2.2.7 Ready
Enter "help" for command listnetxmsd: show stats
Objects............ 35197
Monitored nodes.... 1122
Collectible DCIs... 2146
Active alarms...... 416Server working fine:
NetXMS Server Remote Console V2.2.7 Ready
Enter "help" for command listnetxmsd: show stats
Objects............ 32410
Monitored nodes.... 853
Collectible DCIs... 288
Active alarms...... 232Thanks
Clifford -
Looks like you have really a lot of object updates and server is unable to delivere all updates to the client so everything just stuck. I'll rework object update messages, but can't promise the release number where it will get in.
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Hi
I didn't get the "server is unable to deliver all updates to the client" part, cause almost all objects are switches and routers, so all we expect from the NMS is to report when the node or link is down. so all of it is SNMP Queries to the clients to check for update status
also it is important for me to view the link status as in my below query
https://www.netxms.org/forum/configuration/unable-to-get-bandwidth-details-on-map/msg23166/#msg23166
hope this gets implemented, it would be the greatest thing for me,
My NMS would be super complete
Regards
Clifford -
I believe Tatjana means updates to be sent from the server to the Management Console (client), i.e. either the server can't send new information to the client fast enough or the client can't accept it fast enough, thus throttling the server. Once that happens, the queue of updates to send just keeps increasing as it cannot catch up. It'll probably do that until the server runs out of resources and trips over - or until the console is closed. The latter explains why your server performance came good whenever you closed the console.
Have you considered using the Web Console for testing (sry, we're using Ubuntu, so can't give any guidance on the CentOS process)?
As that can be installed on the server itself, it would effectively remove the network from the server to console communication. -
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I haven't run a NetXMS server on anything other than Ubuntu, so I really can't tell if this is any better/worse than the other options out there.
One of our reasons for using Ubuntu (other than personal preference) was the availability of NetXMS packages directly from the developers. -
Hi,
We have just upgraded Netxms Server to 2.2.8, now the response seems normal from Management console however CPU utilization is showing 300% and above, below are the stats after the upgrade. Just wanted to know if it is normal.
NetXMS Server Remote Console V2.2.8 Ready
Enter "help" for command listnetxmsd: show threads
MAIN
 Threads.............. 256 (8/256)
 Load average......... 7838118.55 7292039.09 5187107.27
 Current load......... 3084405%
 Usage................ 100%
 Active requests...... 7896078
 Scheduled requests... 0
 Total requests....... 12741590
 Thread starts........ 248
 Thread stops......... 0
 Average wait time.... 1641274 msPOLLERS
 Threads.............. 250 (10/250)
 Load average......... 103.76 109.10 117.88
 Current load......... 83%
 Usage................ 100%
 Active requests...... 208
 Scheduled requests... 0
 Total requests....... 30786539
 Thread starts........ 240
 Thread stops......... 0
 Average wait time.... 221 msDATACOLL
 Threads.............. 96 (10/250)
 Load average......... 4.58 5.48 5.53
 Current load......... 1%
 Usage................ 38%
 Active requests...... 1
 Scheduled requests... 0
 Total requests....... 17575738
 Thread starts........ 382
 Thread stops......... 296
 Average wait time.... 0 msSCHEDULER
 Threads.............. 1 (1/64)
 Load average......... 0.00 0.00 0.00
 Current load......... 0%
 Usage................ 1%
 Active requests...... 0
 Scheduled requests... 0
 Total requests....... 1750
 Thread starts........ 0
 Thread stops......... 0
 Average wait time.... 0 msAGENT
 Threads.............. 4 (4/256)
 Load average......... 0.00 0.00 0.00
 Current load......... 0%
 Usage................ 1%
 Active requests...... 0
 Scheduled requests... 0
 Total requests....... 0
 Thread starts........ 0
 Thread stops......... 0
 Average wait time.... 0 msCLIENT
 Threads.............. 16 (16/512)
 Load average......... 0.00 0.00 0.00
 Current load......... 0%
 Usage................ 3%
 Active requests...... 0
 Scheduled requests... 0
 Total requests....... 4586
 Thread starts........ 0
 Thread stops......... 0
 Average wait time.... 0 msThank you
Clifford. -
Hi,
load on thread pool MAIN is definitely not normal. Could you please capture thread stack traces using attached script (you will need gdb installed)?
Best regards,
Victor
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Hi,
Please find the output of script attached for your reference.
Thanks
Clifford
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Hi,
looks like server is locked on sending object updates to one of user sessions. We encounter same issue in another installation recently and already changed object update notification mechanism in current development branch, so there are good chance that upgrade to 2.2.9 will fix your issue.
Best regards,
Victor -
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