Yet more strangeness RE: Slow Responses from 2 of 3 nodes in RC1

2010-04-07 Thread Mark Jones
From: Mark Jones [mailto:mjo...@imagehawk.com] Sent: Wednesday, April 07, 2010 7:56 AM To: user@cassandra.apache.org Cc: jbel...@gmail.com Subject: RE: Slow Responses from 2 of 3 nodes in RC1 I've rerun the tests with a few changes. The memory I ordered came in, so all 3 machines now ha

RE: Slow Responses from 2 of 3 nodes in RC1

2010-04-07 Thread Mark Jones
64 64 256 0.3 60 8 32 periodic 1 864000 If someone has some details about using JMX to monitor this, could you email them, or post them to the wiki? -Original Message- From: Jonathan Ellis [mailto:jbel...@gmail.com] Sent: Monday, April 05, 2010 4:22 PM To: user@cassandr

Re: Slow Responses from 2 of 3 nodes in RC1

2010-04-05 Thread Jonathan Ellis
When you're saying you can check 50 or 100 per second, how many rows and columns does a check involve? What query api are you using? Your cassandra nodes look mostly idle. Is each client thread getting the same amount of work or are some finishing sooner than others? Is your client cpu or disk

RE: Slow Responses from 2 of 3 nodes in RC1

2010-04-02 Thread Mark Jones
To further complicate matters, when I read only from cassdb1, I can check about 100/second/thread (40 threads) when I read only from cassdb2, I can check about 50/second/thread (40 threads) when I read only from cassdb3, I can check about 50/second/thread (40 threads) This is with a consist