Hi Satoshi, When using Riak, your object sizes should ideally be 1MB or less. A 330MB object will never result in acceptable Riak performance.
If you intend to store large objects like this I strongly recommend using Riak CS, which will break up the object for you into chunks that can be managed by Riak. It also provides an S3-compatible API. Please read more about Riak CS here: http://docs.basho.com/riakcs/latest/ Thanks -- Luke Bakken CSE [email protected] On Sun, Jan 19, 2014 at 9:29 PM, Satoshi Yamada <[email protected]> wrote: > Hi, i'm Satoshi, new to riak. > > I would like to check how consistency changes impacts on the performance of > riak cluster. I used w=1 and w=3, and I expected at least two times more of > execution time, but there seems no significant change. I saw more difference > in Cassandra, so I wonder if it's normal in riak or there is something wrong > in my testing. Can anyone give me some advice on it? > > I simply checked as shown below. > > w=1 > $ time curl -v -XPUT > http://mycluster.com:8098/buckets/w1/keys/data.tar.gz?w=1 -H "X-Riak-Vclock: > a85hYGB.........." -H "Content-Type: text/plain" --data-binary @data.tar.gz > ... > ... > ... > real 0m27.501s > user 0m0.378s > sys 0m0.674s > > w=3 > $ time curl -v -XPUT > http://mycluster.com:8098/buckets/w3/keys/data.tar.gz?w=3 -H "X-Riak-Vclock: > a85hYGB.........." -H "Content-Type: text/plain" --data-binary @data.tar.gz > ... > ... > ... > real 0m29.278s > user 0m0.398s > sys 0m0.674s > > My cluster consists of 40, all active and healthy machines and running > riak-1.4.1. > The data I use is 330MB. > > Thanks in advance, > Satoshi > > _______________________________________________ > riak-users mailing list > [email protected] > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com > _______________________________________________ riak-users mailing list [email protected] http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
