Re: Times spent on latches...fast responses gratefully appreciated.

From: Yong Huang <yong321_at_yahoo.com>
Date: 6 Jun 2002 10:23:59 -0700
Message-ID: <b3cb12d6.0206060923.78e46227@posting.google.com>

Andrew Mobbs <andrewm_at_chiark.greenend.org.uk> wrote in message news:<brb*pH8pp_at_news.chiark.greenend.org.uk>...
> Yong Huang <yong321_at_yahoo.com> wrote:
> >_kgl_latch_count = 23
>
> Is there a disadvantage to just sticking this up to 67 and leaving it
> there? (Other than the obvious support issues of undocumented
> parameters.)

I never did a good benchmark. I imagine if the number is too high, way above the number of CPUs (max 67), it would take just a little bit more time to calculate the hash value, which is used as the number of the latch. If you do a benchmark, please post the result.

Yong Huang Received on Thu Jun 06 2002 - 12:23:59 CDT