Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

cpu_initclocks(9) [netbsd man page]

CPU_INITCLOCKS(9)					   BSD Kernel Developer's Manual					 CPU_INITCLOCKS(9)

NAME
cpu_initclocks -- machine-dependent clock setup interface SYNOPSIS
#include <sys/systm.h> void cpu_initclocks(void); DESCRIPTION
cpu_initclocks() is invoked by initclocks() during system bootstrap, immediately after autoconfiguration, to perform the machine-dependent initialization of clock frequencies and start the real-time and statistic clocks running. CODE REFERENCES
Machine-independent clock interface operations are performed within the file sys/kern/kern_clock.c. SEE ALSO
autoconf(9) BSD
May 24, 2002 BSD

Check Out this Related Man Page

HZ(9)							   BSD Kernel Developer's Manual						     HZ(9)

NAME
hz, tick, tickadj, stathz, profhz -- system time model SYNOPSIS
#include <sys/kernel.h> extern int hz; extern int tick; extern int tickadj; extern int stathz; extern int profhz; DESCRIPTION
The essential clock handling routines in NetBSD are written to operate with two timers that run independently of each other. The main clock, running hz times per second, is used to keep track of real time. In another words, hz specifies the number of times the hardclock(9) timer ticks per second. Normally hardclock(9) increments time by tick each time it is called. If the system clock has drifted, adjtime(2) may be used to skew this increment based on the rate of tickadj. The second timer is used to gather timing statistics. It also handles kernel and user profiling. If the second timer is programmable, it is randomized to avoid aliasing between the two clocks. The mean frequency of the second timer is stathz. If a separate clock is not avail- able, stathz is set to hz. If profiling is enabled, the clock normally used to drive stathz may be run at a higher rate profhz, which is required to be a multiple of stathz. This will give higher resolution profiling information. These system variables are also available as struct clockinfo from sysctl(3) and kern.clockrate from sysctl(8). The hz is hardware-depen- dent; it can be overridden (if the machine dependent code supports this) by defining HZ in the kernel configuration file (see options(4)). Only override the default value if you really know what you are doing. SEE ALSO
adjtime(2), callout(9), hardclock(9), microtime(9), time_second(9) BSD
March 25, 2010 BSD
Man Page

13 More Discussions You Might Find Interesting

1. Tips and Tutorials

Unix File Permissions

Introduction I have seen some misinformation regarding Unix file permissions. I will try to set the record straight. Take a look at this example of some output from ls: $ ls -ld /usr/bin /usr/bin/cat drwxrwxr-x 3 root bin 8704 Sep 23 2004 /usr/bin -r-xr-xr-x 1 bin bin ... (6 Replies)
Discussion started by: Perderabo
6 Replies

2. Shell Programming and Scripting

sorting left-justified numeric values

I have a file which looks roughly like this: 996 mmmmmmm 996 xxxxxxxxxxxxx 99600 ssssssssss 9964 fffffffffffff and would like to sort it numerically on the first field. I tried: sort -nr --key=1 .... The output I get is: 99600 ssssssssss 9964 ... (3 Replies)
Discussion started by: rovf
3 Replies

3. Programming

Memory Leaks

Suppose I have a main() function with only one malloc statement allocating say some 1 gb memory. Also say my system has 1 gb of ram. main() { malloc(1gb) return(0) } The program above exits without freeing the memory. In this case will the 1 gb of heap memory be returned... (9 Replies)
Discussion started by: rupeshkp728
9 Replies

4. Solaris

How to install PGX32 on Sparc 10 Ultra?

I'm trying to install a PGX32 video card on my Sparc 10 Ultra running Solaris 10. I've got the Oracle installation guide for it and I got as far as: "4. Insert the CD-ROM labeled “GFX OpenWindows for Solaris 2” into the drive." I don't have a CD-ROM by that name and a web search for that... (21 Replies)
Discussion started by: Michele31416
21 Replies

5. Shell Programming and Scripting

Better to Use Return Code or wc -l Output?

Hey All, Quick question... I'm writing a short script to check if a continuous port is running on a server. I'm using "ps -ef | grep -v grep | grep processName" and I was wondering if it was better/more reliable to just check the return code from the command or if its better to pipe to... (12 Replies)
Discussion started by: mrm5102
12 Replies

6. Shell Programming and Scripting

Vm versus physical linux server

Does anyone have a script that can be run to tell you if you are on either a VM Linux or a physical Linux server? (15 Replies)
Discussion started by: bigbenn
15 Replies

7. BSD

NetBSD 6.1.2: apm and admd not found

I installed NetBSD 6.1.2 amd64 and can't find the apm utility. Is it not in the base system? Is it necessary to recompile the default amd64 kernel to use apm? Or is there a new method for power management and suspend/resume? (2 Replies)
Discussion started by: bsdx
2 Replies

8. Shell Programming and Scripting

RFC - Korn shell prompt

Hi, I am learning shell scripting for the first time. I use AT&T Korn Shell, Version AJM 93u+ 2012-08-01, compiled from source on NetBSD. So far I have managed to set up what I think is a useful and pleasing shell prompt, which can be seen in the image attached to this post. The prompt is... (2 Replies)
Discussion started by: gezley
2 Replies

9. Shell Programming and Scripting

Make bold chars in UNIX

Hi all, I want to make the string as bold in unix. is there any way to acheive this? thanks in advance. (16 Replies)
Discussion started by: SekhaReddy
16 Replies

10. Shell Programming and Scripting

Adding a List of Times

Hey gang, I have a list of times I need to sum up. This list can vary from a few to a few thousand entries. Now I had found a closed reference to adding time titled "add up time with xx:yy format in bash how?" In it, the example works great for that formatted list of times... This is the reply code... (5 Replies)
Discussion started by: Brusimm
5 Replies

11. UNIX for Beginners Questions & Answers

BSD Unix Toolbox: 1000+ Commands for FreeBSD, OpenBSD, and NetBSD

Usually when I on the evening go to bed I take some interesting book with me. I read it for a while to get me down to sleep. Probably most people seek information from the Nett by googleing but I am so oldfashioned I prefer a real book ;) But what a book. The one I found and ordered is BSD Unix®... (0 Replies)
Discussion started by: fossiili
0 Replies

12. UNIX for Beginners Questions & Answers

Grandpa returning to UNIX

On the late 1960s I got short hands on experience with a russian "small" computer. It vas a copy of DEC's VAX ... and running some version of BSD-Unix. After that I worked in a university following the development of computing. After retire I started collecting old pc's and installing... (13 Replies)
Discussion started by: fossiili
13 Replies

13. UNIX for Beginners Questions & Answers

Grep command to show the number of results

Hi I wanted to know if there is an option in grep command to show the number of results (not the number of lines of findings). Thanks (14 Replies)
Discussion started by: abdossamad2003
14 Replies