Code review comment for lp:~zephyrleaves/percona-server/row_cache

Vadim Tkachenko (vadim-tk) wrote :

I can't get good performance numbers with row cache.

I am running sysbench oltp, ZipF distribution, 100GB database, 16 threads

mysqld --innodb-buffer-pool-size=10GB --innodb-log-file-size=4G --innodb_flush_log_at_trx_commit=1 --innodb_row_cache_mem_pool_size=10GB --innodb_row_cache_on=ON

with innodb_row_cache_mem_pool_size=10GB the results is actually worse then with innodb_row_cache_mem_pool_size=5GB

and in any case it is worse then with no row cache at all.

I suspect it maybe a some mutex contention issue.

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