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Quiet · Last activity 1y ago
See all on GitHub →While running sysbench as explained here with a database that is cached by RocksDB from flamegraphs I see that ha_statistic_increment accounts for about 5% of the samples on the scan microbenchmark on a small server with 1 client connection and a large server with 24 client connections. After editing the function to make it cheaper I get between 5% and 10% more throughput. The upstream version is here and just increments a per-handler counter. The MyRocks version is here and does a bit more. The call to check_yield is the most expensive addition. The next most expensive change is the call to update_sql_stats_periodic. A flamegraph from the small server !sb perf g range-covered-pk pre range100 pk1 all
Recent fixes
I am experimenting with RocksDB and found that certain queries are much slower compared to InnoDB. Running on MariaDB 10.2.13. Table: Query: EXPLAIN: PROFILE: If I remove index, sending data time drops to 14-17 seconds. And EXPLAIN changes to this: Is this something that I can improve on my end?
Structured data for AI agents
Repository: facebook/mysql-5.6. Description: Facebook's branch of the Oracle MySQL database. This includes MyRocks. Stars: 2585, Forks: 717. Primary language: C++. Languages: C++ (72.2%), C (14.1%), Yacc (4.9%), Perl (1.9%), Java (1.6%). Homepage: http://myrocks.io Open PRs: 40, open issues: 197. Last activity: 1y ago. Community health: 75%. Top contributors: blaudden, zmur, gkodinov, vasild, marcalff, jdduncan, jhauglid, bjornmu, dahlerlend, arnabray21 and others.