> *To: *user@cassandra.apache.org
> *Sent: *Thursday, February 14, 2013 8:34:06 AM
>
> *Subject: *Re: Write performance expectations...
>
> Hi Ken,
>
> You really should take a look at my first answer... and give us more
> information on the size of your inserts, the ty
event that
an instance goes down for whatever reason?
Ken
- Original Message -
From: "Alain RODRIGUEZ"
To: user@cassandra.apache.org
Sent: Thursday, February 14, 2013 8:34:06 AM
Subject: Re: Write performance expectations...
Hi Ken,
You really should take a l
_
> > From: "Tyler Hobbs"
> > To: user@cassandra.apache.org
> > Sent: Wednesday, February 13, 2013 11:06:30 AM
> >
> > Subject: Re: Write performance expectations...
> >
> > 2500 inserts per second is about what a single py
rg
> Sent: Wednesday, February 13, 2013 11:06:30 AM
>
> Subject: Re: Write performance expectations...
>
> 2500 inserts per second is about what a single python thread using pycassa
> can do against a local node. Are you using multiple threads for the
> inserts? Multiple pr
3, 2013 11:06:30 AM
Subject: Re: Write performance expectations...
2500 inserts per second is about what a single python thread using pycassa can
do against a local node. Are you using multiple threads for the inserts?
Multiple processes?
On Wed, Feb 13, 2013 at 8:21 AM, Alain RODRIGU
e .
Ken
- Original Message -
From: "Alain RODRIGUEZ"
To: user@cassandra.apache.org
Sent: Wednesday, February 13, 2013 9:21:18 AM
Subject: Re: Write performance expectations...
Is there a particular reason for you to use EBS ? Instance Store are
recommended because t
From: *"Tyler Hobbs" mailto:ty...@datastax.com>>
*To: *user@cassandra.apache.org <mailto:user@cassandra.apache.org>
*Sent: *Wednesday, February 13, 2013 11:06:30 AM
*Subject: *Re: Write performance expectations...
2500 inserts per second is about what a sing
t; I get a boost.
>
> Thanks.
>
> Ken
>
>
> --
> *From: *"Tyler Hobbs"
> *To: *user@cassandra.apache.org
> *Sent: *Wednesday, February 13, 2013 11:06:30 AM
> *Subject: *Re: Write performance expectations...
>
>
>
I'm not using multi-threads/processes. I'll try multi-threading to see if I get
a boost.
Thanks.
Ken
- Original Message -
From: "Tyler Hobbs"
To: user@cassandra.apache.org
Sent: Wednesday, February 13, 2013 11:06:30 AM
Subject: Re: Write performance exp
2500 inserts per second is about what a single python thread using pycassa
can do against a local node. Are you using multiple threads for the
inserts? Multiple processes?
On Wed, Feb 13, 2013 at 8:21 AM, Alain RODRIGUEZ wrote:
> Is there a particular reason for you to use EBS ? Instance Store
Is there a particular reason for you to use EBS ? Instance Store
are recommended because they improve performances by reducing the I/O
throttling.
An other thing you should be aware of is that replicating the data to all
node reduce your performance, it is more or less like if you had only one
nod
Hello,
New member here, and I have (yet another) question on write performance.
I'm using Apache Cassandra version 1.1, Python 2.7 and Pycassa 1.7.
I have a cluster of 2 datacenters, each with 3 nodes, on AWS EC2 using EBS and
the RandomPartioner. I'm writing to a column family in a keyspace
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