02-06-2013
Efficient logging of time measurements
Hi all,
I am working on a software, which was developed using C programming on unix environment. I have added certain functionality to the software.
Now, I interested in measuring time taken by new functionality (Mean value of huge amount of tests). Since new function will be part of many threads and will be running simultaneously.
I am looking for a efficient logging mechanism to log time duration for each execution, that will not reduce the performance.
I hope appending to a log file creates bottleneck.
FYI. This software is real time one and will be running for many weeks.
Thanks in advance,
Tamil
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Lynis(8) Unix System Administrator's Manual Lynis(8)
NAME
Lynis - Run an system and security audit on the system
SYNOPSIS
lynis --check-all(-c) [other options]
DESCRIPTION
Lynis is an auditing tool for Unix (specialists). It checks the system and software configuration and logs all the found information into a
log file for debugging purposes, and in a report file suitable to create fancy looking auditing reports. Lynis can be run as a cronjob, or
from the command line. It needs to have full access to the system, so running it as root (or with sudo rights) is required.
The following system areas may be checked:
- Boot loader files
- Configuration files
- Common files by software packages
- Directories and files related to logging and auditing
OPTIONS
--auditor <full name>
Define the name of the auditor/pen-tester. When a full name is used, add double quotes, like "Michael Boelen".
--checkall (or -c)
Lynis performs a full check of the system, printing out the results of each test to stdout. Additional information will be saved
into a log file (default is /var/log/lynis.log).
In case the outcome of a scan needs to be automated, use the report file.
--check-update (or --info)
Show program, database and update information
--cronjob
Perform automatic scan with cron safe options (no colors, no questions, no breaks).
--no-colors
Do not use colors for messages, warnings and sections.
--no-log
Redirect all logging information to /dev/null, prevent sensitive information to be written to disk.
--quick (-Q)
Do a quick scan (don't wait for user input)
--quiet (-q)
Try to run as silent as possible, showing only warnings. This option activates --quick as well.
--reverse-colors
Optimize screen output for light backgrounds.
--tests TEST-IDs
Only run the specific test(s). When using multiple tests, add quotes around the line.
Multiple parameters are allowed, though some parameters can only be used together with others. When running Lynis without any param-
eters, help will be shown and the program will exit.
BUGS
There are no known bugs. Bugs can be reported directly to author.
LICENSING
Lynis is licensed under the GPL v3 license and under development by Michael Boelen.
CONTACT INFORMATION
Project related questions and comments should be asked via http://www.rootkit.nl/contact/.
1.08 15 December 2009 Lynis(8)