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Operating Systems Linux Red Hat lightweight function for measuring time ( better than clock_getime ) Post 302539893 by manustone on Tuesday 19th of July 2011 04:29:01 AM
Old 07-19-2011
Hi
after few research I didn't find a better function than clock_getime or a specific function for RedHat distro BUT I can tell you that in the 2.6 kernel there are new ID available for clock_getime.
If you use version 2.6.28 you can use a new clock type, CLOCK_MONOTONIC_RAW
If you use version 2.6.32 you can use a new clock type, CLOCK_REALTIME_COARSE and CLOCK_MONOTIC_COARSE.

Someone did some tests with it and they seem 5 times faster than the code used by CLOCK_MONOTONIC and CLOCK_REALTIME.

Best Regards
MNSTN
 

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rhsm-debug(8)						   Certificate Information Tool 					     rhsm-debug(8)

NAME
rhsm-debug - Compiles information about system's entitlements, products, and identity used by Red Hat Subscription Manager. SYNOPSIS
rhsm-debug module [options] DESCRIPTION
rhsm-debug compiles information about system's entitlements, products, and identity used by Red Hat Subscription Manager. COMMANDS AND OPTIONS
rhsm-debug has specific options available for each module, depending on what operation is being performed. The currently supported modules are: 1. system COMMON OPTIONS -h, --help Prints the specific help information for the given command. --proxy=PROXY Uses an HTTP proxy. The PROXY name has the format hostname:port. --proxyuser=PROXYUSERNAME Gives the username to use to authenticate to the HTTP proxy. --proxypassword=PROXYPASSWORD Gives the password to use to authenticate to the HTTP proxy. SYSTEM OPTIONS The system command pulls in debug information off of the current system --destination=DESTINATION The directory to place the resulting debug data. The default is /tmp. --no-archive Generates an uncompressed directory intead of a gzipped file. --sos Excludes data files that are also collected by the sosreport tool. BUGS
This tool is part of Red Hat Subscription Manager. To file bugs against this command-line tool, go to <https://bugzilla.redhat.com>, and select Red Hat > Red Hat Enterprise Linux > subscription-manager. AUTHORS
William Poteat<wpoteat@redhat.com>. The rhsm-debug tool was written by William Poteat. COPYRIGHT
Copyright (c) 2012 Red Hat, Inc. This is licensed under the GNU General Public License, version 2 (GPLv2). A copy of this license is avail- able at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. version 1.3 May 23, 2013 rhsm-debug(8)
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