Jeff Roberson wrote:
> I have produced a graph of mysql writes on linux and bsd:
> This is using the sysbench oltp benchmark. I see long periods with no
> disk activity and almost no CPU activity where all mysql threads are
> blocked on a condition variable. This can last for a second or two.
> Has anyone investigated it? Is this an understood problem?
This is very interesting, as I haven't observed this during my testing.
Please post the the output of pstack (or stack trace after attaching
to the running process) during this pause.