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From Dan Kinder <dkin...@turnitin.com>
Subject Re: compression cpu overhead
Date Tue, 03 Nov 2015 23:51:58 GMT
Most concerned about write since that's where most of the cost is, but perf
numbers for a any workload mix would be helpful.

On Tue, Nov 3, 2015 at 3:48 PM, Graham Sanderson <graham@vast.com> wrote:

> On read or write?
>
> https://issues.apache.org/jira/browse/CASSANDRA-7039 and friends in 2.2
> should make some difference, I didn’t immediately find perf numbers though.
>
> On Nov 3, 2015, at 5:42 PM, Dan Kinder <dkinder@turnitin.com> wrote:
>
> Hey all,
>
> Just wondering if anyone has done seen or done any benchmarking for the
> actual CPU overhead added by various compression algorithms in Cassandra
> (at least LZ4) vs no compression. Clearly this is going to be workload
> dependent but even a rough gauge would be helpful (ex. "Turning on LZ4
> compression increases my CPU load by ~2x")
>
> -dan
>
>
>


-- 
Dan Kinder
Senior Software Engineer
Turnitin – www.turnitin.com
dkinder@turnitin.com

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