Hello Vivek!
On Monday, May 26, 2014, Vivek Pandey <vivek.pandey(a)pinelabs.com> wrote:
Hi Matthias,
It is good to know that activity in java-apns is picking up and also that
you are looking at pushy.
I did a few tests which added installations to UPS with a concurrency of
4-8 threads. I was using Postgres 9.3 and UPS 0.10.3 war
I noticed that response slowed down considerably after some time with high
CPU usage and continued to get worse. After doing some profiling, I found
that bulk of CPU cycles are being taken by
org.postgresql.core.VisibleBufferedInputStream.readMore. The entire thread
stack is attached. Also postgres continuously flagged
select installati0_.variantID as variant10_0_0_, installati0_.id as
id1_3_0_, installati0_.id as id1_3_1_, installati0_.alias as alias2_3_1_,
installati0_.deviceToken as deviceTo3_3_1_, installati0_.deviceType as
deviceTy4_3_1_, installati0_.enabled as enabled5_3_1_,
installati0_.operatingSystem as operatin6_3_1_, installati0_.osVersion as
osVersio7_3_1_, installati0_.platform as platform8_3_1_,
installati0_.simplePushEndpoint as simplePu9_3_1_ from InstallationImpl
installati0_ where installati0_.variantID=$1
as the slow query. I am pretty sure that eager collection
AbstractVariant.installations is the root cause of the problem.
Please let me know if you need any more information.
Thanks
Vivek
*From:* mwessendorf(a)gmail.com
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mwessendorf(a)gmail.com
<javascript:_e(%7B%7D,'cvml','mwessendorf@gmail.com');>] *On Behalf
Of *Matthias
Wessendorf
*Sent:* Wednesday, May 21, 2014 5:55 PM
*To:* vivek.pandey(a)pinelabs.com
<javascript:_e(%7B%7D,'cvml','vivek.pandey@pinelabs.com');>;
AeroGear
Developer Mailing List
*Subject:* Re: [aerogear-dev] UPS Production worthiness
Hello Vivek!
On Wed, May 21, 2014 at 2:07 PM, Vivek Pandey <vivek.pandey(a)pinelabs.com>
wrote:
Hi Jay,
Thanks for your reply.
While we have not faced any issues in using UPS in our limited testing, I
often see info stacktraces in ups logs
2014-05-16 10:19:20,032 INFO
[com.notnoop.apns.internal.ApnsConnectionImpl] (Thread-118) Exception while
waiting for error code: java.net.SocketException: Socket closed
at java.net.SocketInputStream.socketRead0(Native Method)
[rt.jar:1.7.0_51]
at java.net.SocketInputStream.read(SocketInputStream.java:152)
[rt.jar:1.7.0_51]
at java.net.SocketInputStream.read(SocketInputStream.java:122)
[rt.jar:1.7.0_51]
……………
at
com.notnoop.apns.internal.ApnsConnectionImpl$1MonitoringThread.run(ApnsConnectionImpl.java:114)
[apns-0.2.3.jar:]
These stacktraces coupled with low dev activity of noop/java-apns project
are disconcerting to me.
the stack-trace is no harm - it's only happening w/ doing a monitoring of
the thread (that's what we currently do, when setting up ApnsService - I
thought about explicitly disable that)
The activity of the underlying java-apns is very low, yes! However @froh42
is getting back:
https://github.com/notnoop/java-apns/commits/master
There will be a new release in the near future; @froh42 asked me if I
could help with pushing the bits to maven central
That said, I recently started looking at pushy:
https://github.com/relayrides/pushy
I also sent a PR that would allow us to feed pushy w/ our certificate from
the database:
https://github.com/relayrides/pushy/pull/87
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