Date: Wed, 12 Apr 2006 21:50:21 +0000 From: Marco van Tol <marco@tols.org> To: freebsd-hackers@freebsd.org Cc: Marco van Tol <marco@tols.org> Subject: Per CPU cpu-statistics under SMP Message-ID: <20060412215021.GB1146@tols.org>
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Hi there, My apologies if this is the wrong list to ask this kind of question. I would appreciate a pointer to the correct list if it is please. :) I noticed in the code for gkrellm /usr/ports/sysutils/gkrellm2 that SMP per-cpu statistics were not yet supported under FreeBSD, and decided to check whether I could add that. (I'm running a (dual-core) Athlon64 X2 with FreeBSD 6.1-PRERELEASE) I can't find sample code and/or documentation on how to acquire that information from the kernel. I checked - gkrellm2 itself, which uses kern.cp_time in <gkrellm>/src/sysdeps/freebsd.c - top, which also uses kern.cp_time in /usr/src/usr.bin/top/machine.c Some browsing around the internet doesn't get me much further either unfortunately. I keep hitting the per-cpu statistics mentioned with regard to uma(9). Under linux this can be acquired via /proc/stat. (And gkrellm looks realy funky with per-cpu stats, but that may or may not be relevant depending on the reader of this mail I guess ;) Is there an interface under FreeBSD to acquire the necessary per-cpu statistics? Thank you very much in advance, appreciated, Marco van Tol -- Gisteren is het niet gelukt.
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