StreamBase Feed Simulator — starts the StreamBase Feed Simulator.


sbfeedsim [OPTIONS...] [feedsim-file.sbfs]


The sbfeedsim command starts the StreamBase Feed Simulator, which connects to a running StreamBase application and submits data to it. Use this tool to test the validity and performance of your application.

As with most StreamBase command-line tools, you can specify the StreamBase Server to communicate with by using -p or -u arguments. In the absence of these arguments, sbfeedsim connects to the server specified in the STREAMBASE_SERVER environment variable. In the absence of this variable, sbfeedsim attempts to connect to the default StreamBase URI, sb://localhost:10000.

If you omit the optional feedsim-file.sbfs argument, sbfeedsim connects to the specified or default server, determines the schema expected by the input stream of the running StreamBase application, and generates default data for each data type in the schema. If the running application has more than one input stream, sbfeedsim determines the expected schema for each stream and generates sample data for all fields in each stream. You can use the -s option to narrow the list of input streams for which sample data is generated.

sbfeedsim can also populate input streams according to a user-specified statistical distribution, or via a data file that contains data you created to test various streaming scenarios. The data file is typically in comma-separated value (CSV) or tab-delimited format. With sbfeedsim, you have control over tuple values and the input rate of generated data.

Running a feed simulations in StreamBase Studio is functionally equivalent to running one with the sbfeedsim command.



Sets the data rate for this feed simulation to run as fast as possible.

-b count

Changes the maximum number of tuples to buffer on each stream to count, when using the default load or a user-specified distribution. This setting adjusts the enqueue client buffer size for each input stream. The default size is 100 tuples. Specify zero to disable buffering.

-B count

Changes the maximum number of tuples to buffer when using a data file or JDBC data source. The default buffer in these cases is 40,000 tuples.

-c, --convert

Converts a legacy feed simulation file (saved with StreamBase 3.5 and earlier) to the current feed simulator XML format, and prints the result to standard output. You can redirect the converted results to a file, as in the following example:

sbfeedsim -c MyOldFeedsim.sbfs > MyNewFeedsim.sbfs


When using a data file or JDBC data source, completely prefill the tuple buffer before sending the first tuple.


Run this feed simulation even if warnings occur during application compatibility validation.

-h, --help

Displays usage text, then exits.

-J jvm-option

Specifies a system property setting or other JVM argument to be passed to the JVM that runs this sbfeedsim command. Use this option to specify temporary settings that affect only the current invocation of sbfeedsim. You must specify multiple -J options to specify multiple JVM arguments.

A space between the -J and its argument is optional. Use the full option syntax for jvm-option that you would use at the Java command line, including the initial hyphen. For example, specify -J-Dstreambase.log-level=2 to increase the log level for this invocation of sbfeedsim.

Your jvm-option argument might require surrounding quotes, depending on the characters it contains and the shell you are using. However, do not use quotes to escape the spaces between separate JVM arguments; instead use separate -J options. For example: -J-Xms512M -J-Xmx2G


Force an on-the-fly conversion and execution of a feed simulation file created with StreamBase 3.5 or earlier.

--max-time secs

Limit the feed simulation run by time. Generates data appropriate for the schemas of the input ports of the running StreamBase Server, until secs seconds have elapsed.

--max-tuples count

Limit the feed simulation run by number of tuples sent. Generates appropriate data as above up to the number of tuples specified by count.

-p TCP-port

Sets the port number for the StreamBase Server instance to connect with. This is useful when the server is localhost and you only need to specify a non-default port, instead of specifying the full URI with the -u option. The default port is 10000.


The -p option is not supported for applications that have StreamBase authentication enabled (because there is no way to specify a username and password) or in conjunction with the multiple URI syntax.


Does not display tuples (quiet).

-s streamname1,streamname2,...

Specifies a comma-separated list of input stream names in the application running on the connected StreamBase Server. The -s option is only valid when no .sbfs feed simulation file is specified as an argument.

-u uri

Specifies the URI of the StreamBase Server to communicate with. The default is sb://localhost:10000/. The URI can also be set using the STREAMBASE_SERVER environment variable. See the sburi page of the Reference Guide (or see sburi(5) at the UNIX shell prompt) for a discussion of the URI format and its shortcuts.


The sbfeedsim command's -u option accepts a comma-separated list of URIs, where each URI specifies a different StreamBase Server in a high availability cluster. See the Multiple URI Syntax for HA Scenarios page in the Reference Guide for details.

-x factor

Speeds up all streams by a factor specified by factor. For example, -x 2 runs the feed simulation at twice the default speed.

-z seed

Specify a long value for seed to be used as the random value generator's seed, when automatically generating values for each field in each stream. Without this option, sbfeedsim uses zero as the seed. The values generated by sbfeedsim are the same for a given seed value, which makes tests with the same seed value repeatable. Specify a seed value other than zero to generate a different set of values than the default setting.


Prints version information and exits.


The optional feed simulation file is file.sbfs. If specified, sbfeedsim generates a load using the specifications in that file.

If you create a data file to contain sample data for testing purposes, it is typically a comma-separated or tab-delimited file.



Optional. Contains the URI for a StreamBase Server instance. Use this variable to set a default StreamBase URI for StreamBase commands that take the -u option. If set, commands use the URI in this variable, overriding their built-in default URI, which is sb://localhost:10000. If this variable is set, you must use the -u option to communicate with any server other than the one specified in this variable. See the sburi page in the Reference Guide for more on StreamBase URIs.


Optional. If set to any value, StreamBase command-line utilities assign a terminal window title to match the name of the executable being run. By default terminal titles are not affected.


When you have saved a feed simulation file that specifies data generation from a JDBC data source, you can run that file with sbfeedsim. For this to work, the JDBC driver JAR file must be in the classpath. You can set the CLASSPATH environment variable, or use another standard classpath setting method. If you use the CLASSPATH environment variable, append to the existing classpath the full path to the JDBC JAR file. See Feed Simulation with a JDBC Data Source for further information.