Hi, Ricardo,
Your geoserver already starts in a reasonable time. I was unsettled
with my installation because it took six minutes. Since haveged did not
change the time needed to run your test, it seems geoserver (actually
tomcat8) is not limited by entropy on startup.
To make sure you have enough entropy, run the following on the same
machine but on a separate console:
watch cat /proc/sys/kernel/random/entropy_avail
Then run the startup test on the original console. The reported
entropy is expected to be over 1000 bits and likely over 2000 bits. "man
random" says the maximum is 4096. If it goes under 1000 you are
"starved" for entropy and haveged is not working properly. My guess is
that your number will be a healthy value over 2000 bits and you should
try a different approach to improve your startup time, which by the way
seems fine to me.
Best,
Daniel
Em 31/01/2017 09:02, Ricardo Pinho escreveu:
> Oi Daniel,
> Very interesting! I use VM's a lot and always found geoserver very
> slow to start. :(
>
> On my "Ubuntu 16.04 server minimal VM, clean install", running on
> vmware player:
> (needed previous: sudo apt install curl)
>
> sudo su
> service tomcat8 stop && service tomcat8 start && time curl
> http://127.0.0.1:8080/geoserver/web
>
> # returns
> real 0m24.487s
> user 0m0.000s
> sys 0m0.004s
>
> Then I tried the havegen solution:
>
> sudo apt install haveged
>
> #verifydefaults
> sudo vi /etc/default/haveged
> #contains: checked
> DAEMON_ARGS="-w 1024"
>
> #start havegd at boot
> update-rc.d haveged defaults
>
> sudo reboot
>
> Run it again:
> sudo su
> service tomcat8 stop && service tomcat8 start && time curl
> http://127.0.0.1:8080/geoserver/web <http://127.0.0.1:8080/geoserver/web>
>
> #Results
> real 0m24.258s
> user 0m0.000s
> sys 0m0.004s
>
> The same! :(
>
> Am I doing this right?
>
> Thank's
> Ricardo
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