Date: Sat, 10 Jan 2004 01:34:08 +0100 From: Palle Girgensohn <girgen@pingpong.net> To: Dan Nelson <dnelson@allantgroup.com> Cc: freebsd-questions@freebsd.org Subject: Re: how find out CPU clockrate? Message-ID: <332740000.1073694848@palle.girgensohn.se> In-Reply-To: <20040109234215.GB3393@dan.emsphone.com> References: <300110000.1073689940@palle.girgensohn.se> <20040109234215.GB3393@dan.emsphone.com>
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It a sound library, JACK. I dunno, I'll try commenting the code, see what happens... Thank, /Palle --On fredag, januari 09, 2004 17.42.15 -0600 Dan Nelson <dnelson@allantgroup.com> wrote: > In the last episode (Jan 10), Palle Girgensohn said: >> How can I programatically find out the CPU frequency? >> >> I'm trying to port a program from Linux, and it uses /proc/cpuinfo. >> >> $ cat /compat/linux/proc/cpuinfo >> cpu MHz : 349.20 >> >> Pretty neat, but it does not exist in FreeBSD, and sysctl does not >> give out this information. Grepping the dmesg.boot seems somewhat odd >> for a C program: >> >> $ dmesg | grep -i hz >> Timecounter "i8254" frequency 1193182 Hz >> CPU: Pentium II/Pentium II Xeon/Celeron (349.20-MHz 686-class CPU) >> >> Better ideas? > > I think someone suggested that more CPU information be exported via > sysctl nodes at some point, but no-one has found it important enough to > code. Note that on laptops and many ACPI motherboards, you can tweak > the CPU speed on the fly, so you can't just store the bootup value. > Other architectures may also allow multiple CPUs at different speeds. > > As for your issue, I'd say just comment the code out. Do you really > need to know the CPU speed? Another option is to shell out and run > cpuid or x86info, but those are x86-only, of course. > > -- > Dan Nelson > dnelson@allantgroup.com
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