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. -- Stanislav Sedov ST4096-RIPE
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