Date: Fri, 7 May 2004 10:26:51 +0930 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: "P.D. Seniura" <pdseniura@techie.com> Cc: freebsd-current@freebsd.org Subject: Re: low HZ value causes "Time Warp Bug" (re: this Puny Pentium2 suddenly became 45% slower!) Message-ID: <200405071026.51646.doconnor@gsoft.com.au> In-Reply-To: <20040507005518.75B6A79004C@ws1-14.us4.outblaze.com> References: <20040507005518.75B6A79004C@ws1-14.us4.outblaze.com>
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=2D----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Fri, 7 May 2004 10:25, P.D. Seniura wrote: > > > It seems this bug happens when the HZ value goes below 16 > > > (either by compiling 'options HZ=3D' in kernel or setting > > > sysctl 'kern.hz=3D' in /boot/loader.conf). The computed > > > 'ticks' value becomes too large for 2-byte int producing > > > crazy overflowed numbers elsewhere. > > > > 16 is pretty low.. > > Then again it would be nice if it warned you or something similar when > > you tried it :) > > Heh, I got HZ set to 20 while it does > buildworld (~9 hours) and portupgrade overnight. > The idea is "less slicing and more doing". ;) =46air enough.. I wouldn't expect you'd notice the difference between 20 and 200 though.. =2D --=20 Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C =2D----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFAmt7T5ZPcIHs/zowRAhNfAJ9C6kxIKUOWZs0zhkrrH4hLjSwnBwCeKhwW g5zGLKvxjTNuxUQ6XfStpRA=3D =3Dyk9c =2D----END PGP SIGNATURE-----
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