Date: Sun, 12 Mar 2000 16:42:26 +0100 (CET) From: Andrzej Bialecki <abial@webgiro.com> To: Kris Kennaway <kris@hub.freebsd.org> Cc: freebsd-hackers@FreeBSD.ORG, jkh@freebsd.org Subject: Re: Getting CPU usage in FreeBSD Message-ID: <Pine.BSF.4.20.0003121640390.23703-300000@mx.webgiro.com> In-Reply-To: <Pine.BSF.4.21.0003112336140.85709-100000@hub.freebsd.org>
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[-- Attachment #1 --] On Sat, 11 Mar 2000, Kris Kennaway wrote: > On Sun, 12 Mar 2000, Oliver Fromme wrote: > > > Then look up the definition of kread() in the same file, and > > how the contents of cur.cp_time are used in the cpustats() > > function. Note that "cur" is a "struct statinfo", which is > > defined in /usr/include/devstat.h. The CPU states are defined > > in /usr/include/sys/dkstat.h. > > We probably should make this into a sysctl to divorce the binaries from > having to read kvm. I'm definitely for it... If I can get permission from Jordan, perhaps the attached patches can make it into upcoming release. Andrzej Bialecki // <abial@webgiro.com> WebGiro AB, Sweden (http://www.webgiro.com) // ------------------------------------------------------------------- // ------ FreeBSD: The Power to Serve. http://www.freebsd.org -------- // --- Small & Embedded FreeBSD: http://www.freebsd.org/~picobsd/ ---- [-- Attachment #2 --] Index: sysctl.c =================================================================== RCS file: /home/ncvs/src/sbin/sysctl/sysctl.c,v retrieving revision 1.25 diff -u -r1.25 sysctl.c --- sysctl.c 1999/11/22 08:43:00 1.25 +++ sysctl.c 2000/03/12 15:35:12 @@ -46,6 +46,7 @@ #endif /* not lint */ #include <sys/types.h> +#include <sys/dkstat.h> #include <sys/stat.h> #include <sys/sysctl.h> #include <sys/resource.h> @@ -219,6 +220,29 @@ /* These functions will dump out various interesting structures. */ static int +S_cpu_time(int l2, void *p) +{ + long *cpt=(long *)p; + double d,total; + int i; + + total=0; + for(i=0;i<CPUSTATES;i++) + total+=*(cpt+i); + d=100**(cpt+CP_USER)/total; + printf("{ user=%.0f%% ",d); + d=100**(cpt+CP_NICE)/total; + printf("nice=%.0f%% ",d); + d=100**(cpt+CP_SYS)/total; + printf("sys=%.0f%% ",d); + d=100**(cpt+CP_INTR)/total; + printf("intr=%.0f%% ",d); + d=100**(cpt+CP_IDLE)/total; + printf("idle=%.0f%% }",d); + return(0); +} + +static int S_clockinfo(int l2, void *p) { struct clockinfo *ci = (struct clockinfo*)p; @@ -417,6 +441,7 @@ case 'S': i = 0; if (!strcmp(fmt, "S,clockinfo")) func = S_clockinfo; + else if (!strcmp(fmt, "S,cpu_time")) func = S_cpu_time; else if (!strcmp(fmt, "S,timeval")) func = S_timeval; else if (!strcmp(fmt, "S,loadavg")) func = S_loadavg; else if (!strcmp(fmt, "T,dev_t")) func = T_dev_t; [-- Attachment #3 --] Index: kern_clock.c =================================================================== RCS file: /home/ncvs/src/sys/kern/kern_clock.c,v retrieving revision 1.105 diff -u -r1.105 kern_clock.c --- kern_clock.c 2000/02/13 10:56:32 1.105 +++ kern_clock.c 2000/03/12 15:35:44 @@ -105,6 +105,9 @@ SYSCTL_STRUCT(_kern, KERN_BOOTTIME, boottime, CTLFLAG_RD, &boottime, timeval, "System boottime"); +SYSCTL_OPAQUE(_kern, OID_AUTO, cpu_time, CTLFLAG_RD, &cp_time, + sizeof(cp_time), "S,cpu_time", "CPU times"); + /* * Which update policy to use. * 0 - every tick, bad hardware may fail with "calcru negative..."
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