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This subchapter looks at sysstat, a server package.
free book on UNIX/Linux System AdministrationTeach Yourself UNIX/Linux System Administration and Shell Programming free computer programming text book projecttable of contents
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This subchapter looks at sysstat, a server package.
sysstat is a server toolset originally created by Sebastien Godard.
Download sysstat from http://pagesperso-orange.fr/sebastien.godard/download.html.
The most famous tools ar iostat, pidstat, and sar.
iostat reports CPU statistics and input/output statistics for devices, partitions and network filesystems.
mpstat reports individual or combined processor related statistics.
pidstar reports statistics for Linux tasks (processes) : I/O, CPU, memory, etc.
sar collects, reports and saves system activity information (CPU, memory, disks, interrupts, network interfaces, TTY, kernel tables,etc.)
sadc is the system activity data collector, used as a backend for sar.
sa1 collects and stores binary data in the system activity daily data file. It is a front end to sadc designed to be run from cron.
sa2 writes a summarized daily activity report. It is a front end to sar designed to be run from cron.
sadf displays data collected by sar in multiple formats (CSV, XML, etc.) This is useful to load performance data into a database, or import them in a spreadsheet to make graphs.
nfsiostat reports input/output statistics for network filesystems (NFS).
cifsiostat reports CIFS statistics.
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Create your own copy from the original source code/ (presented for learning programming).
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