Hi,
On Fri, Mar 13, 2009 at 12:55 PM, Aki Niimura <[email protected]> wrote:
> Hello Linux experts,
>
> I developed a Python program, which tries to take advantage of
Can you please share that test program with us ?
Regards--
Subrata
> available Multi CPU resources.
> Two programs (Server and Client) are running in separate processes
> communicating each other using Socket IPC.
> The performance I'm getting is somewhat in line with my expectation
> under Solaris/x86 but significantly slower
> under Linux (CentOS 5) even both use the identical hardware.
>
> My investigation revealed that the performance is bottlenecked by the
> communication (Socket to localhost).
>
> So, I wrote much simpler program (socket server and socket client) to
> measure the network throughput.
> What I found was that the network throughput on both platforms
> (Solaris/x86 and CentOS Linux) are almost
> identical if packets are going out but the network throughput of
> Solaris/x86 is almost twice (up to three times)
> the throughput Linux can deliver if the packets are destined to localhost.
>
> I know that Solaris treats packets destined to localhost differently.
>
> Because of this, my program is slower (than one process) under Linux
> (and is practically useless).
> (I see meaningful performance gain under Solaris/x86, though)
> I haven't tried any other Linux distributions.
> Is there any Linux distribution known for better localhost network
> throughput?
> Is there any way to improve the localhost throughput under Linux (CentOS)?
>
> Of course, some people would point out that other types of IPC (such
> as shared memory) are better choices
> for the communication between closely coupled multi-processing
> program. Unfortunately, there are
> reasons that my program needs to use Socket.
>
> Any suggestions will be greatly appreciated.
>
> Best regards,
> Aki Niimura
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--
Regards & Thanks--
Subrata
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