Re: Handlersockets - mutex_delay contention

2012-12-12 Thread Manuel Arostegui
Hello, Just for the record, I found the problem and overcome the contention. The key was: innodb_thread_concurrency Quoting the documentation: "innodb_thread_concurrency is the variable that limits the number of operating system threads that can run concurrently inside the InnoDB engine. Rest of

Handlersockets - mutex_delay contention

2012-12-07 Thread Manuel Arostegui
Hello all, I am testing handlersockets performance in a 5.5.28-29.1-log (Percona) server. These are the enabled options: loose_handlersocket_port = 9998 loose_handlersocket_port_wr = loose_handlersocket_threads = 48 loose_handlersocket_threads_wr = 1 innodb_spin_wait_delay=0 The machine has