2007/6/22, Stanislav Sedov <[EMAIL PROTECTED]>:
On Thu, 14 Jun 2007 13:27:01 +0200 Thomas Vogt <[EMAIL PROTECTED]> mentioned: > > Yes you're right. But to have a such feature on a production system is > nice if you have to debug issues. If I get a problem I can easily debug > it without to simulate everything in the lab. It's not that I want to > run such features 24/7. > > But perhaps "options HWPMC_HOOKS" in the kernel enables some hooks which > could cause performance penalties even if I don't actively use such > feature very often. Like many other debug options in the kernel. I don't > know. > I'm using "options HWPMC_HOOKS" on heavily loaded web server almost constantly, no visible penalty at all. Just my 2 cents.
Those are good news! :) --
Stanislav Sedov ST4096-RIPE
-- _________________________________________________________________ Empty your memory, with a free()... like a pointer! If you cast a pointer to an integer, it becomes an integer, if you cast a pointer to a struct, it becomes a struct. The pointer can crash..., and can overflow. Be a pointer my friend... _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"
