Hi list,
I did setup YCSB as the client and Cassandra as the server.
With the above setup, I'm checking what is the load-latency-QoS curves, etc.
This is how I setup the server:
To start with I did warm up the server using the following command:
java -cp build/ycsb.jar:db/cassandra-0.7/lib/* com.yahoo.ycsb.Client
-load -s -db com.yahoo.ycsb.db.CassandraClient7 -P workloads/workloada
-P settings_load.dat
and then run the benchmark using this command:
java -cp build/ycsb.jar:db/cassandra-0.7/lib/* com.yahoo.ycsb.Client -t
-s -db com.yahoo.ycsb.db.CassandraClient7 -P workloads/workloada -P
settings.dat -target 10 -threads 10 -p measurementtype=timeseries -p
timeseries.granularity=1000
What I fail to find are the following:
a) what is the QoS limit? and how is it defined?
b) How long will the experiment run? I understand it will depend on the
"workloads/ "
can we control that? is there a flag to do that?
c) Is there is a way to modify the load at runtime?
When you redirect the output from the second command:
it does not show the output for average latency for update and read.
This is all I get for now:
YCSB Client 0.1
Command line: -t -s -db com.yahoo.ycsb.db.CassandraClient7 -P
workloads/workloada -P settings.dat -target 10 -threads 10 -p
measurementtype=timeseries -p timeseries.granularity=1000
0 sec: 0 operations;
10 sec: 100 operations; 9.85 current ops/sec;
20 sec: 200 operations; 9.99 current ops/sec;
30 sec: 300 operations; 10 current ops/sec;
40 sec: 400 operations; 10 current ops/sec;
is there something I am missing here?
Any help will be appreciated.
Best Regards,
Rajiv
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