sysbench-iibench

sysbench-iibench

This is a sysbench implementation of the iiBench Benchmark. The implementation is based on Mark Callaghan’s python script.

Synopsis

The purpose of iiBench is to stress indexed insertion code paths in a database. You can read more about its history and design choices here and here. This implementation follows the original design and mimics the command line options closely, but provides some nice improvements and extensions on top of it, namely:

• sysbench as the only dependency
• common interface and results format with other sysbench workloads such as OLTP or TPC-C
• no Python-induced scalability issues
• the warmup stage
• index caching statistics reported after the warmup
• multiple tables
• multiple insert threads

Installation

To install sysbench use these instructions.

You can then either use iiBench without installation directly from the source repository:

sysbench ./iibench.lua ...

or install it from the source repository:

luarocks make --lua-version=5.1 --local

or install it from SysbenchRocks:

luarocks --lua-version=5.1 --server=rocks.sysbench.io --local install iibench

To get a summary of command line options after installation:

sysbench iibench help

Usage

Dataset

The dataset consists of the specified number of tables with the following schema:

CREATE TABLE sbtest%d(
   transactionid BIGINT NOT NULL AUTO_INCREMENT,
   dateandtime DATETIME NOT NULL,
   cashregisterid INT NOT NULL,
   customerid INT NOT NULL,
   productid INT NOT NULL,
   price FLOAT NOT NULL,
   data VARCHAR(%d) NOT NULL,
   PRIMARY KEY (transactionid)
)

There is also up to 3 secondary indexes in each table: on (price, customerid), (cashregisterid, price, customerid) and (price, dateandtime, customerid). All three indexes are created by default, but that can be changed with the --num-secondary-indexes option.

The number of rows in each table is specified with --table-size (10000 by default).

Tables can be optionally partitioned with a specified number of partitions and rows per partition using the following options:

• --num-partitions (0 by default)
• --rows-per-partition (0 by default, in which case is computed as table_size / num_partitions)

The ranges of values in numeric columns are controlled by the following options:

• --cashregisters (1000 by default)
• --products (10 000 by default)
• --customers (100 000 by default)
• --max-price (500 by default)

Strings in the data column are controlled by the following options:

• --data-length-min (10 by default)
• --data-length-max (10 by default) which is also used as the VARCHAR length
• --data-random-pct (50 by default) specifies the length in percent of the randomly generated suffix for each string as opposed to static prefix

Threads and rates

The --insert-threads option sets the number of threads executing INSERTs (defaults to 1).

The number of SELECT threads is calculated as --threads (which is the total number of threads created by sysbench) minus --insert-threads.

--select-rate and --insert-rate can be used to control the number of queries per second executed by each SELECT and INSERT thread, respectively. The default for both options is 0, which means no rate limit. Alternatively, the --insert-per-second option can be used to specify a total limit for all INSERT threads.

Limiting table size

The initial table size is specified with --table-size. Since this is an INSERT-mostly workload, you may want to place a limit on how big the tables are allowed to grow.

To do so, use --with-max-table-rows=true --max-table-rows=N, in which case the workload will start deleting oldest rows after reaching N rows, i.e. after inserting max_tables_rows - table_size rows.

This behavior is disabled by default.

Examples

Prepare data and tables

sysbench iibench --mysql-socket=/tmp/mysql.sock --mysql-user=root --threads=10 --tables=10 --table-size=1000000 --num-secondary-indexes=2 --db-driver=mysql prepare

Warm up

sysbench iibench --mysql-socket=/tmp/mysql.sock --tables=10 --table-size=1000000 --stat=true warmup

Run benchmark

sysbench iibench --mysql-socket=/tmp/mysql.sock --mysql-user=root --time=300 --threads=64 --report-interval=1 --tables=10 \
--table-size=1000000 --insert-threads=8 --inserts-per-second=50 --num-secondary-indexes=2 --db-driver=mysql run

Cleanup

sysbench iibench --mysql-socket=/tmp/mysql.sock --mysql-user=root --threads=10 --db-driver=mysql cleanup