Date: Sat, 26 Jan 2008 11:09:00 +0100 From: Kris Kennaway <kris@FreeBSD.org> To: Joseph Koshy <joseph.koshy@gmail.com> Cc: =?ISO-8859-1?Q?Erling_Sm=F8rgrav?= <des@des.no>, =?ISO-8859-1?Q?Dag-?=, freebsd-hackers@freebsd.org, Stefan Lambrev <stefan.lambrev@moneybookers.com> Subject: Re: gettimeofday() in hping Message-ID: <479B06BC.7030603@FreeBSD.org> In-Reply-To: <84dead720801252234v1e7a8856g339faa02c1250bbf@mail.gmail.com> References: <4795CC13.7080601@moneybookers.com> <868x2i3v8d.fsf@ds4.des.no> <864pd63v2h.fsf@ds4.des.no> <4795FE54.9090606@moneybookers.com> <86lk6i0vzk.fsf@ds4.des.no> <479605E2.6070709@moneybookers.com> <479621BE.2060907@FreeBSD.org> <4796357B.9020508@moneybookers.com> <47963911.4000002@FreeBSD.org> <84dead720801252234v1e7a8856g339faa02c1250bbf@mail.gmail.com>
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Joseph Koshy wrote: >> OK, this is the famous problem with modern CPUs that jkoshy has declined >> to work around :( There are patches for this in perforce, see >> >> http://perforce.freebsd.org/changeView.cgi?CH=126189 > > "Famous problem" indeed :). I declined the patch because it > is incorrect and incomplete. > I will accept a patch that demonstrates clue about the > workings of the overall system---the changes in the patch > should be safe, complete, should demonstrate that the submitter > has read and understood vendor documentation, should preserve > user experience for naming events, and each supported PMC event > needs to be documented in pmc.3. I am aware of these issues but repeat my statement that the lack of working pmc on modern CPUs is causing serious difficulties for our developer and user base, as witnessed again in this thread. Kris
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