I've restarted with debugging and it seems to be ok for the time being. Interesting to note that cassandra wouldn't shut down properly and had to be killed.

On Tue, Nov 10, 2009 at 11:55 AM, Jonathan Ellis <jbellis@gmail.com> wrote:
if you're timing out doing a slice on 10 columns w/ 10% cpu used,
something is broken

is it consistent as to which keys this happens on?  try turning on
debug logging and seeing where the latency is coming from.

On Tue, Nov 10, 2009 at 1:53 PM, Chris Were <chris.were@gmail.com> wrote:
>
> On Tue, Nov 10, 2009 at 11:50 AM, Jonathan Ellis <jbellis@gmail.com> wrote:
>>
>> On Tue, Nov 10, 2009 at 1:49 PM, Chris Were <chris.were@gmail.com> wrote:
>> > Maybe... but it's not just multigets, it also happens when retreiving
>> > one
>> > row with get_slice.
>>
>> how many of the 3M columns are you trying to slice at once?
>
> Sorry, I must have mixed up the terminology.
> There's ~3M keys, but less than 10 columns in each. The get_slice calls are
> to retreive all the columns (10) for a given key.