Hi Danilo,
On 04/02/2014 02:37 AM, Danilo Amaral de Oliveira wrote:
Hello Chritopher,
You make score. Exactly, I am waiting 500 users on the peak time. The archive
is in a separated storage in our environment. So, I think that it is not a
limiting factor. I will try some maxthreads configurations and stress
situations to see if the server will could handle 500 users. If necessary I can
increase the server memory and processing, we have robust cluster. Actually the
server has 4 cores and 8gb of memory.
First, this video is a static file right? If so, just put an nginx or
such in front of you'r Tomcat, you dont need an application server for
that, it's just like using a tank to shoot a mosquito :P
At the same time, I am analyzing with security team if we could liberate a
specific video in youtube in order to instead use JWPlayer the site use an
embedded youtube video, so I take off the responsibility of tomcat to deliver
the video and I can sleep in peace. hahha
Well, this clever, bandwidth for free.
Thank you all!
Grupo Energisa
Danilo A. Oliveira
Analista Suporte Aplicacao TI - DPTO CORP. DE INFRAESTR. TI
e-mail: danilo.olive...@energisa.com.br | tel: (32) 3429-6342 | cel: (32)
8452-9478
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-----Mensagem original-----
De: Christopher Schultz [mailto:ch...@christopherschultz.net]
Enviada em: terça-feira, 1 de abril de 2014 18:32
Para: Tomcat Users List
Assunto: Re: Configuring limits of requests/sessions/threads in Tomcat
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Danilo,
On 4/1/14, 2:03 PM, Danilo Amaral de Oliveira wrote:
Next week we will deploy a institutional video to all company (more
than 5k users) in a webpage in an application manges by the Tomcat
7.0.40. I have made a stress test through JMeter, simulating a lot of
simultaneous access, and when the simultaneous access reaches
100 users the application stop answering.
What is your expected peak load? If you only need to handle 500 simultaneous
users, then you should be fine.
I would like to know if I can set a max number (80, for example) of
requests (maxsession or threads, I dunno) in order to configure the
tomcat to send a warning page advising the user that the server is
loaded and try again in few minutes if the limits reach the maximum
value.
You can change the size of Tomcat's request processing pool. That's either "maxConnections" on your
<Connector> or, better yet, "maxThreads" in your <Executor>.
If you set maxThreads="80", then the 100th request will wait in a queue. You
may get request timeouts at this point, which will be equivalent to the 100-user
situation you describe above.
What you really need is a CDN so your servers don't even handle the requests at
all. Is there a place where you can upload your file that will be more scalable
and/or faster? Something like Amazon S3 maybe?
- -chris
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