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Posted to dev@mina.apache.org by "ankitsingla088@gmail.com" <an...@gmail.com> on 2018/04/24 09:44:13 UTC
Apache Minacore - 2.0.9 Network Load Spike Issue
<http://apache-mina.10907.n7.nabble.com/file/t2151/SSL_Listener_10.png>
Hi
I am using mina core 2.0.9.jar library for my SSL server socket application.
I am facing a very peculiar problem. When I increase the number of client
threads to around 4000 (i.e. 4000 sessions will be created), sometimes there
is no or very little traffic for few seconds and then a sudden spike of
traffic. I have tried to find the root cause but I am stuck here. Please
help.
PFA the perfmon screenshot for your reference. You will notice a sudden
spike after some time
Regards,
Ankit Singla
--
Sent from: http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html
Re: Apache Minacore - 2.0.9 Network Load Spike Issue
Posted by Jonathan Valliere <jo...@emoten.com>.
I would remove the SSL and run an experiment to see if it still does it.
On Thu, Apr 26, 2018 at 2:43 AM, Emmanuel Lecharny <el...@apache.org>
wrote:
> I don’t think renegociation is enabled by default. Check on
> http://www.oracle.com/technetwork/java/javase/overview/tlsreadme2-176330.
> html
>
> Le jeu. 26 avr. 2018 à 08:38, ankitsingla088@gmail.com <
> ankitsingla088@gmail.com> a écrit :
>
> > Is there is any way to disable renegotiation in Mina? I will test it once
> > and
> > then confirm if this is indeed the issue.
> >
> >
> >
> > --
> > Sent from:
> > http://apache-mina.10907.n7.nabble.com/Apache-MINA-
> Developer-Forum-f6809.html
> >
> --
> Regards,
> Cordialement,
> Emmanuel Lécharny
> www.iktek.com
>
Re: Apache Minacore - 2.0.9 Network Load Spike Issue
Posted by Emmanuel Lecharny <el...@apache.org>.
I don’t think renegociation is enabled by default. Check on
http://www.oracle.com/technetwork/java/javase/overview/tlsreadme2-176330.html
Le jeu. 26 avr. 2018 à 08:38, ankitsingla088@gmail.com <
ankitsingla088@gmail.com> a écrit :
> Is there is any way to disable renegotiation in Mina? I will test it once
> and
> then confirm if this is indeed the issue.
>
>
>
> --
> Sent from:
> http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html
>
--
Regards,
Cordialement,
Emmanuel Lécharny
www.iktek.com
Re: Apache Minacore - 2.0.9 Network Load Spike Issue
Posted by "ankitsingla088@gmail.com" <an...@gmail.com>.
Is there is any way to disable renegotiation in Mina? I will test it once and
then confirm if this is indeed the issue.
--
Sent from: http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html
Re: Apache Minacore - 2.0.9 Network Load Spike Issue
Posted by Emmanuel Lecharny <el...@apache.org>.
FTR, the graph has been remived from your mail by the ASF mailer. Can you
upload the image somwhere and maim the url ?
Regarding the SSL burst, keep in mind that negociating keys is *extremly*
cpu intensive. What would be usefull would be to give the number of new SSL
session being created per second. You can also add the logger filter to
have a better vision on what’s going on in MINA. Last, not leasr, try to
profile the application...
Le mer. 25 avr. 2018 à 13:52, ankitsingla088@gmail.com <
ankitsingla088@gmail.com> a écrit :
> Its only a spike of traffic. Infact as explained in the original perfmon
> graph, network load decreases (becomes almost 0) for few seconds and then a
> sudden burst comes. In the same time when network load decreases, CPU Usage
> also decreases as per the attached graph. So that should be as expected I
> think.
>
> About SSL renegotation, I am not able to understand how it can cause this
> kind of behaviour. Could you please explain more?
>
>
> Regards,
> Ankit Singla
>
>
> <http://apache-mina.10907.n7.nabble.com/file/t2151/CPUUsage.png>
>
>
>
> --
> Sent from:
> http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html
>
--
Regards,
Cordialement,
Emmanuel Lécharny
www.iktek.com
Re: Apache Minacore - 2.0.9 Network Load Spike Issue
Posted by "ankitsingla088@gmail.com" <an...@gmail.com>.
Its only a spike of traffic. Infact as explained in the original perfmon
graph, network load decreases (becomes almost 0) for few seconds and then a
sudden burst comes. In the same time when network load decreases, CPU Usage
also decreases as per the attached graph. So that should be as expected I
think.
About SSL renegotation, I am not able to understand how it can cause this
kind of behaviour. Could you please explain more?
Regards,
Ankit Singla
<http://apache-mina.10907.n7.nabble.com/file/t2151/CPUUsage.png>
--
Sent from: http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html
Re: Apache Minacore - 2.0.9 Network Load Spike Issue
Posted by Jonathan Valliere <jo...@apache.org>.
A spike of traffic? Or a spike of cpu? It’s also possible that the SSL
could be renegotiating.
On Tue, Apr 24, 2018 at 5:57 AM ankitsingla088@gmail.com <
ankitsingla088@gmail.com> wrote:
> <http://apache-mina.10907.n7.nabble.com/file/t2151/SSL_Listener_10.png>
>
> Hi
>
> I am using mina core 2.0.9.jar library for my SSL server socket
> application.
> I am facing a very peculiar problem. When I increase the number of client
> threads to around 4000 (i.e. 4000 sessions will be created), sometimes
> there
> is no or very little traffic for few seconds and then a sudden spike of
> traffic. I have tried to find the root cause but I am stuck here. Please
> help.
>
> PFA the perfmon screenshot for your reference. You will notice a sudden
> spike after some time
>
>
> Regards,
> Ankit Singla
>
>
>
> --
> Sent from:
> http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html
>
Re: Apache Minacore - 2.0.9 Network Load Spike Issue
Posted by "ankitsingla088@gmail.com" <an...@gmail.com>.
Hi Cordialement,
PFB the details of my test server where I am able to replicate the issue. I
am facing the issue on the production server which is having much higher
resources in terms of hardware.
OS - windows server 2012 R2 Standard
Java version - Java 8 Update 45 (64 bit)
System Memory - 8 GB
Processor - Intel(R) Xeon(R) CPU - E5 2670 V2@2.50 GHz
I tried using a simple non SSL c++ client server application on the same
server and there was no such spike which helped me deduce that issue is
either with SSL or with mina. Can you share any further pointers?
Regards,
Ankit Singla
--
Sent from: http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html
Re: Apache Minacore - 2.0.9 Network Load Spike Issue
Posted by Emmanuel Lecharny <el...@apache.org>.
It’s hard to tell what could be wrong with the information you are
providing.
Typically, what’s the OS uou are using? Java version? Memory ? Nb of
processors?
Also, 4000 threads is pretty high, if they are all active, but that’s not
really MINA problem...
Bottom line, we don’t know anything about your application, nor about the
way you use Mina...
Le mar. 24 avr. 2018 à 14:00, ankit.singla@pinelabs.com <
ankit.singla@pinelabs.com> a écrit :
> Hi Cordialement,
>
> Thanks for the Reply.
>
> I am still facing this issue with mina 2.0.17. The issue comes only when
> the
> load increases beyond a limit.
>
> Regards,
> Ankit Singla
>
>
>
> --
> Sent from:
> http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html
>
--
Regards,
Cordialement,
Emmanuel Lécharny
www.iktek.com
Re: Apache Minacore - 2.0.9 Network Load Spike Issue
Posted by "ankit.singla@pinelabs.com" <an...@pinelabs.com>.
Hi Cordialement,
Thanks for the Reply.
I am still facing this issue with mina 2.0.17. The issue comes only when the
load increases beyond a limit.
Regards,
Ankit Singla
--
Sent from: http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html
Re: Apache Minacore - 2.0.9 Network Load Spike Issue
Posted by "ankit.singla@pinelabs.com" <an...@pinelabs.com>.
Hi Emmanuel,
Thanks for the Reply!
Is this a known issue with mina 2.0.9 which has been fixed in 2.0.17 or just
a hunch?
Regards,
Ankit Singla
--
Sent from: http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html
Re: Apache Minacore - 2.0.9 Network Load Spike Issue
Posted by Emmanuel Lecharny <el...@apache.org>.
Hi,
Can you try with mina 2.0.17 which has been release 2weeks ago and confirm
you still get this error? Thanks !
Le mar. 24 avr. 2018 à 11:57, ankitsingla088@gmail.com <
ankitsingla088@gmail.com> a écrit :
> <http://apache-mina.10907.n7.nabble.com/file/t2151/SSL_Listener_10.png>
>
> Hi
>
> I am using mina core 2.0.9.jar library for my SSL server socket
> application.
> I am facing a very peculiar problem. When I increase the number of client
> threads to around 4000 (i.e. 4000 sessions will be created), sometimes
> there
> is no or very little traffic for few seconds and then a sudden spike of
> traffic. I have tried to find the root cause but I am stuck here. Please
> help.
>
> PFA the perfmon screenshot for your reference. You will notice a sudden
> spike after some time
>
>
> Regards,
> Ankit Singla
>
>
>
> --
> Sent from:
> http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html
>
--
Regards,
Cordialement,
Emmanuel Lécharny
www.iktek.com