cbc-pillowfight - Man Page

cbc-pillowfight [Options]

cbc-pillowfight creates a specified number of threads each looping and performing get and set operations within the cluster.

The stress test operates in the following order

1. It will pre-load the items in the cluster (set by the --num-items option)
2. Once the items are all loaded into the cluster, it will access all the items (within the --num-items) specification, using a combination of storage and retrieval operations (the proportion of retrieval and storage operations are controlled via the --set-pct option).
3. Operations are scheduled in batches. The batches represent a single pipeline (or network buffer) which is filled with a certain amount of operations (see the --batch-size option). These batch sizes are then sent over to the cluster and the requests are serviced by it.

Options may be read either from the command line, or from a configuration file (see cbcrc(4)):

The following options control workload generation:

-B,  --batch-size=BATCHSIZE

This controls how many commands are scheduled per cycles. To simulate one operation at a time, set this value to 1.

-I,  --num-items=NUMITEMS

Set the total number of items the workload will access within the cluster. This will also determine the working set size at the server and may affect disk latencies if set to a high number.

-p,  --key-prefix=PREFIX

Set the prefix to prepend to all keys in the cluster. Useful if you do not wish the items to conflict with existing data.

--collection=scopeName.collectionName

Access data based on full collection name path. Multiple --collection filters can specify the different scopes with different collection names. Note that default collection will not be used if the collection was specified, to enable default collection along with the named ones, it should be specified explicitly --collection=_default._default.

-t,  --num-threads=NTHREADS

Set the number of threads (and thus the number of client instances) to run concurrently. Each thread is assigned its own client object.

-r,  --set-pct=PERCENTAGE

The percentage of operations which should be mutations. A value of 100 means only mutations while a value of 0 means only retrievals.

-n,  --no-population

By default cbc-pillowfight will load all the items (see --num-items) into the cluster and then begin performing the normal workload. Specifying this option bypasses this stage. Useful if the items have already been loaded in a previous run.

--populate-only

Stop after population. Useful to populate buckets with large amounts of data.

-m,  --min-size=MINSIZE:

-M,  --max-size=MAXSIZE

Specify the minimum and maximum value sizes to be stored into the cluster. This is typically a range, in which case each value generated will be between --min-size and --max-size bytes.

-E,  --pause-at-end

When the workload completes, do not exit immediately, but wait for user input. This is helpful for analyzing open socket connections and state.

-c,  --num-cycles

Specify the number of times the workload should cycle. During each cycle an amount of --batch-size operations are executed. Setting this to -1 will cause the workload to run infinitely.

--sequential

Specify that the access pattern should be done in a sequential manner. This is useful for bulk-loading many documents in a single server.

--start-at

This specifies the starting offset for the items. The items by default are generated with the key prefix (--key-prefix) up to the number of items (--num-items). The --start-at value will increase the lower limit of the items. This is useful to resume a previously cancelled load operation.

-T,  --timings

Enabled timing recorded. Timing histogram will be dumped to STDERR on SIGQUIT (CTRL-/). When specified second time, it will dump a histogram of command timings and latencies to the screen every second.

-e,  --expiry=SECONDS

Set the expiration time on the document for SECONDS when performing each operation. Note that setting this too low may cause not-found errors to appear on the screen.

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d,  --durability=LEVEL

Specify durability level for mutation operations. Known values are: "none", "majority", "majority_and_persist_to_active", "persist_to_majority".

p,  --persist-to=NUMNODES

Wait until the item has been persisted to at least NUMNODES nodes' disk. If NUMNODES is 1 then wait until only the master node has persisted the item for this key. You may not specify a number greater than the number of nodes actually in the cluster. -1 is special value, which mean to use all available nodes.

r --replicate-to=NREPLICAS

Wait until the item has been replicated to at least NREPLICAS replica nodes. The bucket must be configured with at least one replica, and at least NREPLICAS replica nodes must be online. -1 is special value, which mean to use all available replicas.

--lock=TIME

This will retrieve and lock an item before update, making it inaccessible for modification until the update completed, or TIME has passed.

--json

Make pillowfight store document as JSON rather than binary. This will allow the documents to nominally be analyzed by other Couchbase services such as Query and MapReduce.

JSON documents are created by creating an empty JSON object ({}) and then repeated populating it with Field_%d property names (where %d is 1 and higher), and setting its value to a repeating asterisk * up to 16 times:

  {
      "Field_1": "****************",
      "Field_2": "****************",
      "Field_3": "****************",
      "Field_4": "****************",
      "Field_5": "********"
  }

When using document size constraints, be aware that the minimum and maximum sizes (--min-size and --max-size) are not strict limits, and that the resultant sizes may be bigger or smaller by a few bytes in order to satisfy the requirements of proper JSON syntax.

--noop

Use couchbase NOOP operations when running the workload. This mode ignores population, and all other document operations. Useful as the most lightweight workload.

--subdoc

Use couchbase sub-document operations when running the workload. In this mode pillowfight will use Couchbase sub-document operations http://blog.couchbase.com/2016/february/subdoc-explained to perform gets and sets of data. This option must be used with --json

--pathcount

Specify the number of paths a single sub-document operation should contain. By default, each subdoc operation operates on only a single path within the document. You can specify multiple paths to atomically executed multiple subdoc operations within a single command.

This option does not affect the --batch-size option as a subdoc command is considered as a single command (with respect to batching) regardless of how many operations it contains.

The following options may be included in the connection string (via the -U option) as URI-style query params (e.g. couchbase://host/bucket?option1=value1&option2=value2) or as individual key=value pairs passed to the -D switch (e.g. -Doption1=value1 -Doption2=value). The -D will internally build the connection string, and is provided as a convenience for options to be easily passed on the command-line

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Rather than spawning threads for multiple instances, offer a way to have multiple instances function cooperatively inside an event loop.

This command's options are subject to change.

cbc(1), cbcrc(4)

The cbc-pillowfight tool was first introduced in libcouchbase 2.0.7

cbc(1), cbc-n1qlback(1), cbcrc(4).