On 11/22/2010 12:21 AM, Ivan Voras wrote:
> The "semwait" part is from PostgreSQL - probably shared buffer locking,
> but there's a large number of processes regularly in sbwait - maybe
> something can be optimized here?
I think this paper was mentioned before, did you read it?... "An
Analysis of Linux Scalability to Many Cores"?
<http://pdos.csail.mit.edu/papers/linux:osdi10.pdf>
ABSTRACT.
"This paper analyzes the scalability of seven system applications (Exim,
memcached, Apache, PostgreSQL, gmake, Psearchy, and MapReduce) running
on Linux on a 48- core computer."
The paper is about Linux, but it also focus on some changes that can be
made to PostgreSQL to achieve better concurrency.
--
Luis Neves