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From Miguel Verde <miguelitov...@gmail.com>
Subject Re: New User: OSX vs. Debian on Cassandra 0.5.0 with Thrift
Date Sat, 24 Apr 2010 21:54:46 GMT
Yes, one should use either the TBufferedTransport or TFramedTransport  
in Java for performance reasons. These are analogous to the C# Socket  
classes and you should see a performance improvement from buffering.



On Apr 24, 2010, at 5:31 PM, Joost Ouwerkerk <joost@openplaces.org>  
wrote:

> Is this something that also needs to be managed in Java? In most  
> examples I've seen, connections are created like this:
>             TSocket socket = new TSocket(location, thriftport)
>             TBinaryProtocol binaryProtocol = new TBinaryProtocol 
> (socket, false, false);
>
>             Cassandra.Client client = new Cassandra.Client 
> (binaryProtocol);
> Is that sub-optimal?
> joost.
>
> On Fri, Apr 23, 2010 at 3:29 PM, Heath Oderman <heath@526valley.com>  
> wrote:
> Really interesting find.
>
> After Jonathan E. suggested py_stress and it seemed clear the  
> problem was in my .net client I spent a few days debugging the  
> client in detail.
>
> I ended up changing my CassandraContext instantiation to use a
>
>           TBuffferedProtocol(TSocket) instead of a
>           TSocket directly.
>
> The difference was *dramatic*.
>
> The calls to debian suddenly behaved as expected, eclipsing the  
> write speeds under load of the calls to the OSX box by a factor of 2!
>
> The change caused a performance increase in the client communicating  
> with OSX as well, but the improvement was smaller.
>
> I don't understand exactly, but clearly there's a difference in the  
> way that Debian and OSX handle socket level communications that has  
> a big effect on a .net client calling in from windows.
>
> It's been a really interesting experiment and I throughly appreciate  
> all the help and pointers I've gotten from this list.
>
> Cassandra is so fast, and so impressive it strains credibility.  I'm  
> totally amazed by what these guys have put together.
>
> Thanks,
> Stu
>

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