Comments on: InnoDB thread concurrency http://www.mysqlperformanceblog.com/2006/06/05/innodb-thread-concurrency/ Everything about MySQL Performance Wed, 01 Oct 2008 00:10:09 +0000 http://wordpress.org/?v=2.5.1 By: InnoDB's concurrency problems on multi core boxes fixed?! http://www.mysqlperformanceblog.com/2006/06/05/innodb-thread-concurrency/#comment-350327 InnoDB's concurrency problems on multi core boxes fixed?! Sat, 30 Aug 2008 06:21:39 +0000 http://www.mysqlperformanceblog.com/2006/06/05/innodb-thread-concurrency/#comment-350327 [...] “Killed”, but never dying. Based on what I’d read in High Performance MySQL, and articles like this one, I tried twiddling with innodb_thread_concurrency, innodb_concurrency_tickets, and [...] [...] “Killed”, but never dying. Based on what I’d read in High Performance MySQL, and articles like this one, I tried twiddling with innodb_thread_concurrency, innodb_concurrency_tickets, and [...]

]]> By: Ben Clewett http://www.mysqlperformanceblog.com/2006/06/05/innodb-thread-concurrency/#comment-304181 Ben Clewett Fri, 23 May 2008 10:40:41 +0000 http://www.mysqlperformanceblog.com/2006/06/05/innodb-thread-concurrency/#comment-304181 Thanks for the clear posting including the equation on number of threads: 2*(NumCPUs+NumDisks) I have 4 physical CPUs, in 2x duel cores with shared cache. But Linux nicely turns these into 8 logical CPUs, where each pair share 80% of CPU resources. With 4xPhysical and 8xLogical, what value of CPU count should be used? Regards, Ben Thanks for the clear posting including the equation on number of threads:

2*(NumCPUs+NumDisks)

I have 4 physical CPUs, in 2x duel cores with shared cache.

But Linux nicely turns these into 8 logical CPUs, where each pair share 80% of CPU resources.

With 4xPhysical and 8xLogical, what value of CPU count should be used?

Regards,

Ben

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