added sysbench benchmarking README.md file

sysbench/README.md

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+
+# Benchmarking PostgreSQL database server using sysbench client
+
+# sysbench
+
+sysbench is a scriptable multi-threaded benchmark tool based on
+LuaJIT. It is most frequently used for database benchmarks, but can also
+be used to create arbitrarily complex workloads that do not involve a
+database server.
+
+sysbench comes with the following bundled benchmarks:
+
+- `oltp_*.lua`: a collection of OLTP-like database benchmarks
+- `fileio`: a filesystem-level benchmark
+- `cpu`: a simple CPU benchmark
+- `memory`: a memory access benchmark
+- `threads`: a thread-based scheduler benchmark
+- `mutex`: a POSIX mutex benchmark
+
+# 
+For more information on sysbench, please visit [https://github.com/akopytov/sysbench](https://github.com/akopytov/sysbench).
+
+# PostgreSQL
+
+PostgreSQL is a powerful, open source object-relational database system 
+that uses and extends the SQL language combined with many features that 
+safely store and scale the most complicated data workloads. 
+
+# 
+For more information on postgresql, please visit [https://www.postgresql.org/](https://www.postgresql.org/).
+
+# start the docker container with PostgreSQL server image
+
+``` shell
+$ docker run --name postgres-instance -e POSTGRES_PASSWORD=mypass -e POSTGRES_USER=sbtest -p 8001:5432 -d postgres-img -c min_dynamic_shared_memory=128
+```
+
+# If you need to use hugepages use following command
+
+``` shell
+$ docker run --name postgres-instance -e POSTGRES_PASSWORD=mypass -e POSTGRES_USER=sbtest -p 8001:5432 -d postgres-img -c huge_pages=on -c huge_page-size=2MB -c min_dynamic_shared_memory=128
+```
+
+
+** You can start multiple containers listening at different port number 
+visible to the external sysbench client.
+
+# prepare data and tables
+
+``` shell
+$ sysbench --db-driver=pgsql --pgsql-user=sbtest --pgsql_password=mypass --pgsql-db=sbtest --pgsql-port=8001 --tables=16 --table-size=10000 --threads=256 --time=0 --events=0 --report-interval=1 --time=300 /usr/share/sysbench/oltp_read_write.lua prepare
+```
+
+# Run benchmark
+
+``` shell
+$ sysbench --db-driver=pgsql --pgsql-user=sbtest --pgsql_password=mypass --pgsql-db=sbtest --pgsql-port=8001 --tables=16 --table-size=10000 --threads=256 --time=0 --events=0 --report-interval=1 --time=300 /usr/share/sysbench/oltp_read_write.lua run
+```
+
+