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Operating Systems HP-UX How to find processor frequency Post 18731 by PxT on Tuesday 2nd of April 2002 04:23:30 PM
Old 04-02-2002
As perderabo mentioned, this is hp-ux specific. HP's boot messages generally do not provide the Mhz information, so dmesg cannot be used. The provided perl code should work on any hp-ux machine.
 

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DMESG(1)							   User Commands							  DMESG(1)

NAME
dmesg - print or control the kernel ring buffer SYNOPSIS
dmesg [options] dmesg --clear dmesg --read-clear [options] dmesg --console-level level dmesg --console-on dmesg --console-off DESCRIPTION
dmesg is used to examine or control the kernel ring buffer. The default action is to read all messages from kernel ring buffer. OPTIONS
The --clear, --read-clear, --console-on, --console-off and --console-level options are mutually exclusive. -C, --clear Clear the ring buffer. -c, --read-clear Clear the ring buffer contents after printing. -D, --console-off Disable printing messages to the console. -d, --show-delta Display the timestamp and time delta spent between messages. If used together with --notime then only the time delta without the timestamp is printed. -e, --reltime Display the local time and delta in human readable format. -E, --console-on Enable printing messages to the console. -F, --file file Read log from file. -f, --facility list Restrict output to defined (comma separated) list of facilities. For example dmesg --facility=daemon will print messages from system daemons only. For all supported facilities see dmesg --help output. -H, --human Enable human readable output. See also --color, --reltime and --nopager. -h, --help Print a help text and exit. -k, --kernel Print kernel messages. -L, --color Colorize important messages. -l, --level list Restrict output to defined (comma separated) list of levels. For example dmesg --level=err,warn will print error and warning messages only. For all supported levels see dmesg --help output. -n, --console-level level Set the level at which logging of messages is done to the console. The level is a level number or abbreviation of the level name. For all supported levels see dmesg --help output. For example, -n 1 or -n alert prevents all messages, except emergency (panic) messages, from appearing on the console. All levels of messages are still written to /proc/kmsg, so syslogd(8) can still be used to control exactly where kernel messages appear. When the -n option is used, dmesg will not print or clear the kernel ring buffer. -P, --nopager Do not pipe output into a pager, the pager is enabled for --human output. -r, --raw Print the raw message buffer, i.e., do not strip the log level prefixes. Note that the real raw format depends on method how dmesg(1) reads kernel messages. The /dev/kmsg uses different format than sys- log(2). For backward compatibility dmesg(1) returns data always in syslog(2) format. The real raw data from /dev/kmsg is possible to read for example by command 'dd if=/dev/kmsg iflag=nonblock'. -S, --syslog Force to use syslog(2) kernel interface to read kernel messages. The default is to use /dev/kmsg rather than syslog(2) since kernel 3.5.0. -s, --buffer-size size Use a buffer of size to query the kernel ring buffer. This is 16392 by default. (The default kernel syslog buffer size was 4096 at first, 8192 since 1.3.54, 16384 since 2.1.113.) If you have set the kernel buffer to be larger than the default then this option can be used to view the entire buffer. -T, --ctime Print human readable timestamps. The timestamp could be inaccurate! The time source used for the logs is not updated after system SUSPEND/RESUME. -t, --notime Do not print kernel's timestamps. -u, --userspace Print userspace messages. -V, --version Output version information and exit. -w, --follow Wait for new messages. This feature is supported on systems with readable /dev/kmsg only (since kernel 3.5.0). -x, --decode Decode facility and level (priority) number to human readable prefixes. SEE ALSO
syslogd(8) AUTHORS
Karel Zak <kzak@redhat.com> Theodore Ts'o <tytso@athena.mit.edu> AVAILABILITY
The dmesg command is part of the util-linux package and is available from Linux Kernel Archive <ftp://ftp.kernel.org/pub/linux/utils/util- linux/>. util-linux July 2012 DMESG(1)
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