If you don't use option -p on the command line, then pidstat will display only tasks with non-zero statistics. QUESTIONS RELATING TO PIDSTAT 4.1. You are currently viewing LQ as a guest. Are you new to LinuxQuestions.org? http://rss4medics.com/cannot-open/sar-cannot-open-var-log-sa-sa-14.php
service sysstat restart Or /etc/init.d/sysstat restart Thank you!!! Remember that sar may search for sadc in predefined directories (/usr/local/lib/sa, /usr/lib/sa, ...) before looking in the current directory! So it is important to use the proper options the first time sadc is called (whether via a crontab, a script like sa1(8) or even the script used to insert a Copyright (C) 2016 by Georgi Georgiev SUPPORT 24 X 7 X 365 BLOG FAQ CONTACT US BILLING PORTAL WEB HOSTING RESELLER HOSTING CMS HOSTING FFMPEG HOSTING DEDICATED SERVERS CONTENT DELIVERY Register
If you only see "Available" then it isn't installed. What happened to sar's options -h, -H, -x and -X? Powered by CryBit. Each counter maintained by the kernel is cumulative since system boot.
When there is a "file rotation" (beginning of a new day), sadc writes its data at the end of the previous daily data file (/var/log/sa/sa
rrd.cgiis a perl front-end for rrdtool and can be used to make some graphs (see a demo here). Install Sysstat Ubuntu The above error message indicates that another sadc process was running and had already locked the same output file. As a consequence the measurements gathered by sadc are cumulative values. you can try this out You should now use the sadf command instead of sar -h or sar -H, and the pidstat command instead of sar -x or sar -X.
Thanks!! How To Enable Sar In Linux How to migrate all cPanel accounts without its home directory? Why values displayed by iostat are so different in the first report from those displayed in subsequent ones? Sysstat may have met an overflow condition while reading CPU usage from your /proc/stat file.
Thanks for visiting! http://www.pc-freak.net/blog/sysstat-file-directory-fix-debian-linux/ Thanks Abhi abhijeetdutta View Public Profile View LQ Blog View Review Entries View HCL Entries View LQ Wiki Contributions Find More Posts by abhijeetdutta 07-02-2010, 03:41 PM #2 druuna Cannot Open /var/log/sa/sa: No Such File Or Directory About Forums cPanel CloudLinux scripts Web Server Apache Nginx .htaccess WordPress Sitemap commands / Utilities 8 Simple steps to install and configure sar (sysstat) on Ubuntu/Debian server by Arunlal Ashok · How To Install Sysstat In Linux Hence the CPU ressource used by a thread on an interval of time as displayed by pidstat may have concerned several processors.
There are some command line tools are available to monitor server resource usages. The Sar or Sysstat is one of the great command-line tool to monitor the server resource usage. this page Daily data files are created by default in the /var/log/sa directory using the data collector (sadc) or using option -o with sar. Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us. Please read their manual page to learn some more about their respective options. 2.23. Please Check If Data Collecting Is Enabled In /etc/default/sysstat
When I compile sysstat, it fails with the following message: make: msgfmt: Command not found make: ***[locales] Error 127 The msgfmt command belongs to the GNU gettext package. Why can't iostat display extended statistics for partitions with some 2.6.x kernels? I have sysstat setup to run via cron: 0 * * * * /usr/local/lib/sa/sa1 600 6 & so that I get an activity report every 10 minutes. get redirected here Remember that timestamps are displayed by sadf in UTC (Coordinated Universal Time) by default.
fruttenboel View Public Profile View LQ Blog View Review Entries View HCL Entries Visit fruttenboel's homepage! Cannot Open /var/log/sa/sa Permission Denied All rights reserved. This condition is all the more likely to happen as your machine uptime is high and/or there are many processors.
Are sar daily data files fully compatible with Sun Solaris format sar files? 2.6. You are trying to use a file which is not a system activity file, or whose format is no longer compatible with that of files created by current version of sar. It doesn't match what I expect it to be... Invalid System Activity File /var/log/sa/sa QUESTIONS RELATING TO SAR/SADC/SADF 2.1.
Sysstat does get its data at midnight, but two data samples are needed to display the values. So the value for counter foo at time T is calculated as: foo/s = [foo(T) - foo(T-dt)] / dt where dt is the interval given on the command line. 2.17. Note: With older versions of sysstat that don't have autoconf support (up to v7.0.4), you have to answer 'y' to the question "Set crontab to start sar automatically" during config stage useful reference older than 2.4.x) a block is of indeterminate size and therefore the displayed values are not useful.
You can leave a response, or trackback from your own site. With a new one everyone sees it when looking for zero reply threads so you're more likely to get a quick answer. Please note that '-' must be used to specify the output file for sadc to be able to detect such a file rotation. But sar can also display statistics collected "on the fly": Just enter the proper options on the command line to indicate which statistics are to be displayed, and also specify
However please note that pre-existing datafiles will be deleted as links will be created and replace them. How can I load sar data into an Oracle database for performance analysis and capacity planning? Command for Rsync over SSH? To prevent sar from overwriting any existing files, just set the variable HISTORY in /etc/sysconfig/sysstat to the number of days during which data must be kept.
Moreover all per-second statistics displayed by sar are average values on the given time interval. You should enter "pidstat -u -p ALL" to make sure that all the processes are listed in the report. 4.4. In the particular case of iostat, also be sure to use the ALL keyword on the command line to display statistical information relating to every device, including those that are defined Why values displayed by iostat are so different in the first report from those displayed in subsequent ones? 3.6.
apt-get install sysstat There is a chance of getting the following error if you are not configured the sysstat properly. This is a kernel limit. Both UP and SMP machines are fully supported. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant.