On Tue, 2013-02-05 at 13:51 -0500, Edward Capriolo wrote:
> Without stating the obvious, if you are interested in scale, then why
> pick python?.
I would (kind of) agree with this point..
If you absolutely need performance here then python isn't the right
choice.
If, however, you are currently w
Without stating the obvious, if you are interested in scale, then why
pick python?. I did want to point out that YCSB is not even the gold
standard for benchmarks using cassandra's stress you can get more ops
per sec then YCSB.
On Tue, Feb 5, 2013 at 1:13 PM, Pradeep Kumar Mantha
wrote:
> Thanks,
Thanks, I will use the multiprocessing package, since I need to scale it to
multiple nodes.
I will also try to optimize the function calls and use global variables.
Thank you very much for your help.
On Tue, Feb 5, 2013 at 9:12 AM, aaron morton wrote:
> The simple thing to do would be use the
The simple thing to do would be use the multiprocessing package and eliminate
all shared state.
On a multicore box python threads can run on different cores and battle over
obtaining the GIL.
Cheers
-
Aaron Morton
Freelance Cassandra Developer
New Zealand
@aaronmorton
http:/
On Tue, 2013-02-05 at 21:38 +1300, aaron morton wrote:
> The first thing I noticed is your script uses python threading library, which
> is hampered by the Global Interpreter Lock
> http://docs.python.org/2/library/threading.html
>
> You don't really have multiple threads running in parallel, tr
The first thing I noticed is your script uses python threading library, which
is hampered by the Global Interpreter Lock
http://docs.python.org/2/library/threading.html
You don't really have multiple threads running in parallel, try using the
multiprocessor library.
Cheers
-
Hi,
Could some one please let me know any hints, why the pycassa
client(attached) is much slower than the YCSB?
is it something to attribute to performance difference between python and
Java? or the pycassa api has some performance limitations?
I don't see any client statements affecting the pyca
Thanks.. Please find the script as attachment.
Just re-iterating.
Its just a simple python script which submit 4 threads.
This script has been scheduled on 8 cores using taskset unix command , thus
running 32 threads/node.
and then scaling to 16 nodes
thanks
pradeep
On Thu, Jan 31, 2013 at 4:38
Can you provide the python script that you're using?
(I'm moving this thread to the pycassa mailing list (
pycassa-disc...@googlegroups.com), which is a better place for this
discussion.)
On Thu, Jan 31, 2013 at 6:25 PM, Pradeep Kumar Mantha
wrote:
> Hi,
>
> I am trying to benchmark cassandra o
