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From <John.E.Gr...@wellsfargo.com>
Subject RE: Apache Tomcat Version 7.0.59 on CentOS 6.8 to handle 2k requests/second
Date Mon, 14 Nov 2016 15:04:40 GMT


> -----Original Message-----
> From: Kaushal Shriyan [mailto:kaushalshriyan@gmail.com]
> Sent: Monday, November 14, 2016 8:46 AM
> To: Tomcat Users List
> Subject: Re: Apache Tomcat Version 7.0.59 on CentOS 6.8 to handle 2k
> requests/second
> 
> On Mon, Nov 14, 2016 at 8:06 PM, Mark Thomas <markt@apache.org> wrote:
> 
> > On 14/11/2016 14:28, Kaushal Shriyan wrote:
> > > Hi,
> > >
> > > is there a way to configure tomcat to handle 2k requests/second (2k
> > meaning
> > > 2000 requests per second). How many cpu cores do i need to setup
> > > tomcat
> > to
> > > handle 2k requests/second? How much physical memory the server
> > > should
> > have?
> >
> > That will depend on your application.
> >
> > My laptop will easily handle 10 times that for a simple application. I
> > have seen much larger servers unable to handle more than a handful of
> > requests a second for a large, complex, poorly performing application.
> >
> > > Any guidelines or rule of thumb to be followed? Any help will be
> > > highly appreciable.
> >
> > Profile your application.
> >
> 
> Thanks Mark Thomas for the quick reply.
> 
> Please suggest me any open source profiling application which i can start with. I
> will appreciate if you can help me understand the relation between 2k
> requests/second vs cpu cores of the server.
> 
> Thanks again in advance.
> 
> Regards,
> 
> Kaushal

There is no fixed relationship between requests per second and number of cores.  It all depends
on your application.  Think of it this way: if each request takes 1 second, you'll get fewer
requests per second than if each request takes 1 millisecond.  Whether a request takes 1 second
or 1 millisecond has more to do with your application than hardware.

As for an open source profiler, try asking your favorite search engine.

John
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