Re: PostgreSQL pgbench performance regression in 2.6.23+

[Mike Galbraith]

On Thu, 2008-05-22 at 13:44 +0200, Peter Zijlstra wrote:

> Humm,.. how to fix this.. we'd need to somehow detect the 1:n nature of
> its operation - I'm sure there are other scenarios that could benefit
> from this.

Maybe simple (minded): cache waker's last non-interrupt context wakee,
if the wakee != cached, ignore SYNC_WAKEUP unless sync was requested at
call time?

	-Mike

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/