Date: Fri, 04 May 2007 23:01:07 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Diomidis Spinellis <dds@aueb.gr> Cc: arch@FreeBSD.org, Robert Watson <rwatson@FreeBSD.org>, re@FreeBSD.org Subject: Re: Accounting changes Message-ID: <21181.1178319667@critter.freebsd.dk> In-Reply-To: Your message of "Sat, 05 May 2007 01:49:51 %2B0300." <463BB88F.4020804@aueb.gr>
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In message <463BB88F.4020804@aueb.gr>, Diomidis Spinellis writes: >Poul-Henning Kamp wrote: >> In message <463B581E.6070804@aueb.gr>, Diomidis Spinellis writes: >> >>> On modern processors the various time values were 0, because many >>> commands took less than 1/64s to execute [bde]. Now time values are >>> stored with microsecond precision as float numbers.(I've written code >>> that allows the kernel to write them without any floating point >>> operations.) >> >> Why on earth introduce another time format ? >> >> Please use a standard time format please. > >If we use struct timeval for the three time values the structure size >increases considerably (especially on an amd64). Here are some numbers: > >i386 >Old size=48 >New size=64 >New size with timeval=76 that is a good argument. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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