beer planet

• Tom Hanlon of MySQL presents
• Benchmarking tools
  • mysqlslap (with MySQL 5.1)
  • sql-bench
  • supersmack – Jeremy Zawodny's tool
  • Apache Bench (combined with some sample PHP scripts)
  • MySQL's benchmark() function
  • mybench
  • WAST
  • JMeter
• sql-bench
  • pros
    • ubiquitous
    • long history of use
  • cons
    • single thread
    • Perl
    • not always real-life test cases (create 10k tables?)
  • list of tests follows
• supersmack
  • configurable, flexible
  • 1000 queries, 50 users
    • super-smack -d mysql select-key-smack 50 1000
  • can modify queries to be closer to what your own application uses
  • pros
    • benches concurrent connections
    • well documented
  • cons
    • test language sucks
• Apache Bench
  • webserver benchmarking tool
  • point to a webserver, utilizes concurrent users
  • siege, httperf, httpload are similar
  • 404 errors deliver really quickly, so make sure to check for those
• benchmark()
  • tests

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• Robert Hodges from Continuent presents
• About Continuent

• leading provider of open source database availability and scaling solutions

• uni/cluster – multi-master database clustering that replicates data across multiple databases and load balances reads
• uses "database virtualization"

• protection from db and site failures
• continuous operation during upgrades

• Brewer's conjecture

• DDL support
• inconsistent reads between replicas
• deadlocks
• sequences
• non-deterministic SQL

• data replication

• where are updates processed? master/master vs master/slave
• when are updates replicated? sync vs async

• views – who is active, who is crashed, do

…

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Updated: October 22nd, 2011

sysbench – Linux test bench. Easy as pie to test CPU, memory, threads, mysql, and disk performance.

Full description is available here: http://sysbench.sourceforge.net/docs/

install mysql, mysql-devel
wget http://downloads.sourceforge.net/project/sysbench/sysbench/0.4.12/sysbench-0.4.12.tar.gz
tar xvzf sysbench*gz
cd sysbench*
./configure && make install

mysql tests

This will run 10 separate consecutive mysql tests using an InnoDB table type, each with 100 mysql threads, doing a total of 1000 various SQL operations per test. Then it will print the total time they took to finish:

sysbench --test=oltp --mysql-user=USER --mysql-password=PASS --mysql-db=test \
  --mysql-host='HOST' --mysql-table-engine=innodb prepare
 
time perl -e "foreach(1..10){print \`sysbench --max-requests=1000 --test=oltp \
  --mysql-user=USER --mysql-password=PASS --mysql-db=test --mysql-host='HOST' \
  --mysql-table-engine=innodb --num-threads=100 run\`}"
 
sysbench --test=oltp --mysql-user=USER --mysql-password=PASS --mysql-db=test \
  --mysql-host='HOST' cleanup

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