Date: Tue, 18 Sep 2007 21:43:19 -0400 (EDT) From: Garrett Wollman <wollman@hergotha.csail.mit.edu> To: jroberson@chesapeake.net Cc: , arch@freebsd.org Subject: Re: 64bit ticks, was Re: Changing p_swtime and td_slptime to ticks Message-ID: <200709190143.l8J1hJKA074148@hergotha.csail.mit.edu> In-Reply-To: <20070918153536.D558@10.0.0.1> References: <20070917165657.B558@10.0.0.1> <46EF644E.9050207@elischer.org> <20070918012555.G558@10.0.0.1> <46EFE4BD.4030505@freebsd.org> <20070918142115.C558@10.0.0.1>
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Jeff Roberson writes: >Is there a good reason for not making ticks 64bit? math involving this >value is relatively infrequent. Bruce? Any comments? It'd sure let us >forget all of these counter wrapping problems. Making ticks 64 bits on 32-bit architectures means that updates to it will not be atomic. -GAWollman -- Garrett A. Wollman | The real tragedy of human existence is not that we are wollman@csail.mit.edu| nasty by nature, but that a cruel structural asymmetry Opinions not those | grants to rare events of meanness such power to shape of MIT or CSAIL. | our history. - S.J. Gould, Ten Thousand Acts of Kindness
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