httpd process cpu usage high
i am using graphite as a data source in grafana, I have no issues with the server performance on all the different dashboards and queries but we are now testing a new map panel that can have the metrics plotted on it.
the panel have 5K+ metrics plotted and when it refreshes for the new metrics from graphite, the httpd process on graphite showing that it's demanding 130% %CPU via the top command ( running graphite on redhat 7.4 by the way)
what's interesting is that only one of the cores is being utilized at %60 percent at my server when the refresh happens.
so my question is there anyway to make that particulate query get spanned on multiple process/threads so it can utilize more of the 16 cores on my server ? that may also enhance the time the query take to refresh on grafana which is ~15 seconds.
any other suggestion is highly appreciated to go around this
thank you for the help
Question information
- Language:
- English Edit question
- Status:
- Answered
- For:
- Graphite Edit question
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- Last query:
- 2018-01-27
- Last reply:
- 2018-01-27
Denis Zhdanov (deniszhdanov) said : | #1 |
Hell,
It depends on your setup. If you're using apache + mod_wsgi then you need to increase number of processes and threads in line similar to https:/
Then you need to restart Apache.
Yousef F (yousef.fattal) said : | #2 |
Thank you for the suggestion, I didn't get a chance to try this out on my prod server.
is there any recommendations behind the numbers ? I have the default installation with the configuration looking like the link you sent. In my case i have 16 cpu cores server. The server has only graphite installed on it so does it make since to raise both numbers to 16 matching my cores ? or even more if my server can handle it?
Thank you for the help
Denis Zhdanov (deniszhdanov) said : | #3 |
Rule of thumb here is workers=2xCPU, but please take note that if you're have hyperthreading enable real cores can be 8 and not 16.
So, unfortunately YMMV - it's need to be tested on your prticular hardware. Start with 16, and increase if needed.
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