| PackageDescription | The sysstat package contains utilities to monitor system performance and usage activity. Sysstat contains various utilities, common to many commercial Unixes, and tools you can schedule via cron to collect and historize performance and activity data.
* iostat reports CPU statistics and input/output statistics for devices, partitions and network filesystems.
* 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.
* mpstat reports individual or combined processor related statistics.
* pidstat reports statistics for Linux tasks (processes).
UP and SMP machines are fully supported by sysstat, including machines with hyperthreaded or multi-core processors. Sysstat also has support for hotplug CPU's (it detects automagically CPU's that are disabled or enabled on the fly) and for National Language (NLS). |