Hi Andris, You're welcome!
In our testing we found that Oracle Java 8 was more efficient compared to OpenJDK. I would suggest switching the JVM. Actually, as of 5.3.x+, we dropped support of Java 6, the minimum is 7, but we actually recommend 8, so it would be best to upgrade the JVM anyway. RE: the heap size. You can do this by adding this to the system.properties file <https://help.ubnt.com/hc/en-us/articles/205202580-UniFi-system-properties-File-Explanation> and restarting the controller service: unifi.xmx=2048 unifi.xms=2048 Just make sure not to have any characters after each line, otherwise they will be ignored. Cheers, Mike On 7 February 2017 at 13:58, Andris Bjornson <and...@everylayer.com> wrote: > Thanks for the quick response Mike - looking forward to 5.4.11. We'll > upgrade to that once it's out! > > Here's the info about what we're running on our t2.medium AWS instance > > >> Ubuntu 14.04 w/ Linux 3.13.0-107-generic #154-Ubuntu SMP Tue Dec 20 >> 09:57:27 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux >> >> From the output of ps, I can see that it's running Java >> from /usr/lib/jvm/java-7-openjdk-amd64, which seems to be: >> >> ubuntu@hs2:~$ /usr/lib/jvm/java-7-openjdk-amd64/bin/java -version >> java version "1.7.0_121" >> OpenJDK Runtime Environment (IcedTea 2.6.8) (7u121-2.6.8-1ubuntu0.14.04.1) >> OpenJDK 64-Bit Server VM (build 24.121-b00, mixed mode) > > > > Do you think it would make a difference to run oracle java? > > Finally, we're going to increase the java heap size from the default 1GB > to 2GB via JVM_MAX_HEAP_SIZE. > > > Also - I've noted that the t2.medium instance type is burstable...meaning > when we hit this high CPU problem, we exhaust our Amazon CPU credits. > We'll move this to a non-burstable instance type and see if when not > limited by CPU credits the machine is able to recover from the high cpu. > > > > > > _______________________________________________ > Ubnt_users mailing list > Ubnt_users@wispa.org > http://lists.wispa.org/mailman/listinfo/ubnt_users > > -- Mike Dudgeon UniFi Team - Wireless, Routing & Switching <https://www.ubnt.com/unifi> [image: Ubiquiti Networks, Inc] <http://www.ubnt.com>
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