[zeromq-dev] 0MQ Tests on Linux Real-Time Kernel

[Martin Sustrik]

Btw, have you ever tested OpenPGM on RT kernel?

Martin

Martin Sustrik wrote:
> Hi Steven,
> 
>> Is the performance hit similar across SUSE Real Time, Red Hat 5.2 MRG, 
>> and Ubuntu RT kernels?  Is this the standard Linux RT overhead or are 
>> there distribution specific optimisations?
> 
> We haven't tested other distributions but my assumption is that the 
> performance will be pretty similar on all of them given that the core 
> codebase is the same.
> 
>> Red Hat is on slightly newer 2.6.24.7 <http://2.6.24.7>, but you can see 
>> the real time green curve lags above the stock red in their graph of 
>> results:
>>
>> http://www.redhat.com/mrg/realtime/
> 
> It's hard to say anything about the graph. It's not clear what the test 
> scenario is. Passing something over the network? Storing something to 
> disk? It's not clear what x-axis is. Time? Messages/usec? It's not clear 
> what y-axis is. Response time of what? What are the measurement units 
> (Microseconds? If so the results for non-real-time are completely out of 
> bounds for any simple test case - 70 milliseconds?)
> 
> Martin
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