The Ultimate Guide to High Availability with MariaDB
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sysbench v0.5 - 3x Five Minute Runs on work with 5.1 vs. 5.2-wl86

3x Five Minute Runs on work with 5.1 vs. 5.2-wl86 key cache partitions off

MariaDB 5.1 vs. 5.2-wl86 sysbench benchmark comparison in %

Each test was run three times for 5 minutes.

                   Number of threads
                     1       4       8       16      32      64      128
 sysbench test
  delete            107.28   94.70   98.10  107.12   93.59   89.24   86.89
  insert            103.15  105.13  101.75  102.78  101.52  100.29  100.89
  oltp_complex_ro   101.31  101.77  100.41   98.72   98.53  101.59  100.44
  oltp_complex_rw   Dup key errors (due to sysbench)
  oltp_simple       102.28  100.76  102.70  100.94  101.05  101.81  102.06
  select            100.88  101.05  100.48  101.61  101.48  101.87  101.44
  update_index       97.57   96.81   93.58  102.43   89.19  107.63   88.29
  update_non_index  101.58   83.24  110.46   94.52  106.33  103.87  115.22

(MariaDB 5.1 key_cache_partitions off q/s /
 MariaDB 5.2-wl86 key_cache_partitions off q/s * 100)

key_buffer_size = 512M

Benchmark was run on work: Linux openSUSE 11.1 (x86_64), daul socket quad-core Intel 3.0GHz. with 6MB L2 cache, 8 GB RAM, data_dir on single disk.

MariaDB and MySQL were compiled with

BUILD/compile-amd64-max

MariaDB 5.1 revision was:

revno: 2821
committer: Sergei Golubchik <sergii@pisem.net>
branch nick: maria-5.1
timestamp: Tue 2010-02-23 13:04:58 +0100
message:
  fix for a possible DoS in the my_net_skip_rest()

MariaDB 5.2-wl86 revision was:

lp:~maria-captains/maria/maria-5.2-wl86

revno: 2742
committer: Igor Babaev <igor@askmonty.org>
branch nick: maria-5.2-keycache
timestamp: Tue 2010-02-16 08:41:11 -0800
message:
  WL#86: Partitioned key cache for MyISAM.
  This is the base patch for the task.

sysbench was run with the following parameters:

--oltp-table-size=20000000 \  # 20 mio rows
--max-time=300 \
--max-requests=0 \
--mysql-table-engine=MyISAM \
--mysql-user=root \
--mysql-engine-trx=no \
--myisam-max-rows=50000000"

and this variable part of the parameters

--num-threads=$THREADS --test=${TEST_DIR}/${SYSBENCH_TEST}

Configuration used for MariaDB:

--no-defaults \
--datadir=$DATA_DIR \
--language=./sql/share/english \
--key_buffer_size=512M \
--max_connections=256 \
--query_cache_size=0 \
--query_cache_type=0 \
--skip-grant-tables \
--socket=$MY_SOCKET \
--table_open_cache=512 \
--thread_cache=512 \
--tmpdir=$TEMP_DIR"
#  --key_cache_partitions=7 \
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