, 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 processes?
On Wed, Feb 13, 2013 at 8:21 AM, Alain
: 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 processes?
On Wed, Feb 13, 2013 at 8:21 AM, Alain
that
an instance goes down for whatever reason?
Ken
- Original Message -
From: Alain RODRIGUEZ arodr...@gmail.com
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
*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 type of EC2 you are using at
least. You should also consider using Instance store and not EBS. Well,
look at all these things
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
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
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 arodr...@gmail.com wrote:
Is there a particular reason for you to use
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 ty...@datastax.com
To: user@cassandra.apache.org
Sent: Wednesday, February 13, 2013 11:06:30 AM
Subject: Re: Write performance
: *Tyler Hobbs ty...@datastax.com 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 single python thread
