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Full Discussion: Efficient logging of time measurements
Top Forums Programming Efficient logging of time measurements Post 302767103 by tamil.pamaran on Wednesday 6th of February 2013 08:00:07 AM
Old 02-06-2013
Linux 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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LEARN ABOUT CENTOS

vfs_time_audit

VFS_TIME_AUDIT(8)					    System Administration tools 					 VFS_TIME_AUDIT(8)

NAME

       vfs_time_audit - samba vfs module to log slow VFS operations

SYNOPSIS

       vfs objects = time_audit

DESCRIPTION

       This VFS module is part of the samba(7) suite.

       The time_audit VFS module logs system calls that take longer than the number of milliseconds defined by the variable time_audit:timeout. It
       will log the calls and the time spent in it.

       It's kind of comparable with strace -T and is helpful to reveal performance problems with the underlying file and storage subsystems.

       This module is stackable.

OPTIONS

       time_audit:timeout = number of milliseconds
	   VFS calls that take longer than the defined number of milliseconds that should be logged. The default is 10000 (10s).

EXAMPLES

       This would log VFS calls that take longer than 3 seconds:

		   [sample_share]
		path = /test/sample_share
		vfs objects = time_audit
		time_audit:timeout = 3000

VERSION

       This man page is correct for version 4.0.0 of the Samba suite.

AUTHOR

       The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open
       Source project similar to the way the Linux kernel is developed.

       The time_audit VFS module was created with contributions from Abhidnya Chirmule.

Samba 4.0							    06/17/2014							 VFS_TIME_AUDIT(8)
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