voldemort performance java client

[Georg Labbé]

Hi,

I'm new into the voldemort db issue and facing some troubles with the performance of my first test-database.

When I am putting 1000 key-value pairs into my database, I need about 2200ms until the client finishes the task.

This means, that I can put about 454 entries per second. Isn't it a bit slow? Shouldn't I be able to achieve a better performance referring to the documentation on http://www.project-voldemort.com/voldemort/ ?

Here my database configuration and simple java code. What am I doing wrong and how do I achieve better rates?

cluster.xml

<cluster>

        <name>mycluster</name>

        <server>

                <id>0</id>

                <host>192.168.1.50</host>

                <http-port>8081</http-port>

                <socket-port>6666</socket-port>

                <partitions>0, 1</partitions>

        </server>

</cluster>

server.properties

# The ID of *this* particular cluster node

node.id=0

max.threads=100

############### DB options ######################

http.enable=true

socket.enable=true

# BDB

bdb.write.transactions=true

bdb.flush.transactions=true

bdb.cache.size=1G

# Mysql

mysql.host=localhost

mysql.port=1521

mysql.user=root

mysql.password=3306

mysql.database=test

#NIO connector settings.

enable.nio.connector=true

request.format=vp3

storage.configs=voldemort.store.bdb.BdbStorageConfiguration, voldemort.store.readonly.ReadOnlyStorageConfiguration

stores.xml

<stores>

  <store>

    <name>teststorage</name>

    <persistence>bdb</persistence>

    <description>Test store</description>

    <owners>te...@test.test</owners>

    <routing-strategy>consistent-routing</routing-strategy>

    <routing>client</routing>

    <replication-factor>1</replication-factor>

    <required-reads>1</required-reads>

    <required-writes>1</required-writes>

    <key-serializer>

      <type>string</type>

    </key-serializer>

    <value-serializer>

      <type>string</type>

    </value-serializer>

  </store>

</stores>

Java-Client

    String bootstrapUrl = "tcp://192.168.1.50:6666";

    StoreClientFactory factory = new SocketStoreClientFactory(new ClientConfig().setBootstrapUrls(bootstrapUrl));

    StoreClient<String, String> client = factory.getStoreClient("teststorage");

    int i = 0;

    Long timestamp = new Date().getTime();

    while (i < 1000) {

      client.put("testkey" + i, "testvalue"+i);

      i++;

    }

    Long timestamp2 = new Date().getTime();

    System.out.println("time: "+(timestamp2-timestamp)+" ms");

    

System configuration:

Voldemort-DB: Ubuntu-VM with 2 cores and 2 GB RAM.

Java-Client: Host system with Windows 7 6 GB RAM and i7.

I would be glad about any help I can get! 

Regards

Georg

[Vinoth Chandar]

Going by the fact that you have only 2G total in RAM, I think your BDB cache is too big?
What is your JVM config?

[Carlos Tasada]

My personal experience is that the bdb cache should be maximum the 60% of the whole VMSize. 

Also there are other factors in the way the VM is initialized that can affect the performance. 

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