Re: Help! Cassandra Data Loader threads are getting stuck

2010-07-26 Thread Malcolm Smith
Also make sure you have consistency level set to at least ONE Sent from my iPhone On Jul 26, 2010, at 5:31 PM, Aaron Morton wrote: > Try running it without threading to see if it's a cassandra problem or an > issue with your threading. > > Perhaps split the file and run many single threaded

Re: Cassandra benchmarking on Rackspace Cloud

2010-07-19 Thread malcolm smith
Usually a fixed bottleneck results from a limited resource -- you've eliminated disk from the test and you don't mention that CPU is a serious issue, or memory for that matter. So for me that leaves network i/o and switch capacity. Is it possible that your test is saturating your local network ca

Re: Coke Products at Digg?

2010-07-08 Thread malcolm smith
I thought it was NoCola solutions or NotOnlyCola rather than UnCola. On Wed, Jul 7, 2010 at 11:55 AM, Miguel Verde wrote: > Dr. Pepper has recently been picked up by Coca Cola as well. I wonder if > the UnCola solutions like 7Up and Fanta are just a fad? > > > On Wed, Jul 7, 2010 at 10:50 AM, M

Re: How to perform queries on Cassandra?

2010-04-09 Thread Malcolm Smith
Mike are you stuck on a train too? :-) On Apr 9, 2010, at 8:51 PM, Mike Gallamore > wrote: I apologize in advance if this goes into esoteric algorithms a bit too much but I think this will get to an interesting idea to solve your problem. My background is physics particularly computer s

Re: Newbie Performance Question

2010-03-28 Thread malcolm smith
Ok - so I guess that between 1400 and 3500 inserts per second is reasonably good results -- we are going to continue working on our custom code but it seems like we need a design that uses lots of row-keys and fewer column family keys and is heavily threaded. Thanks for your help in pointing out t

Re: Newbie Performance Question

2010-03-26 Thread malcolm smith
19,190 653878,4468,200 687692,3381,210 711378,2368,220 755527,4414,230 794985,3945,240 811653,1666,250 ~ ~ On Fri, Mar 26, 2010 at 12:25 PM, Brandon Williams wrote: > On Fri, Mar 26, 2010 at 10:45 AM, malcolm smith < > malsm...@treehousesystems.com> wrote: > >> I've been getting a f

Newbie Performance Question

2010-03-26 Thread malcolm smith
I've been getting a feel for the performance elements of Cassandra using version 0.51. I've done similar tests on HBase before, but Cassandra has some very appealing aspects that I would like to pursue. However I'm not seeing the what seems like the common level of performance others are seeing.