Date: Mon, 26 May 2003 16:48:07 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: Martin Blapp <mb@imp.ch> Cc: current@freebsd.org Subject: Re: linux_threads nice bug ? nice / nohup confusion Message-ID: <3ED2A7B7.C3D1553E@mindspring.com> References: <20030526175945.R561@cvs.imp.ch>
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Martin Blapp wrote: > After closly looking at some of our mysql performance issues, > I've found out that all mysqld threads (I'm using linuxthreads) > are running at +14 niceness. This is of course a catastropy. > > A renice of the main thread does not help. If I do that, I see > that all new created threads have again niceness +14. Starting > without nohup makes +11 as niceness. > > I guess there is somewhere a severe bug here. Depends; "niceness" is relative to the scheduler you are using. Try using the other scheduler, and this should become pretty obvious to you. -- Terry
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