Analytics

This section describes the metrics collected by SysStat for CPU, memory, process / threads and filesystem in detail. Nvidia SysStat stores the metrics collected from the target system inside a log file (specified via –output option) in a compact binary format. This log file can be uploaded to NvLumos for detailed performance analysis.

To generate visualization report for NVIDIA SysStat log, please use NvLumos suite from NVIDIA NVONLINE.

CPU

CPU collector tracks cumulative and per-core cpu usage which can be used to analyze the time spent in user mode, system mode and I/O wait.

Name	Description
User	Time spent in user mode
System	Time spent in system mode
I/O Wait	Time spent waiting on I/O completion

Memory

Memory collector tracks overall system memory info. This data is used to provide memory utilization breakdown in terms of total memory present in the system and the memory in use or in buffered, cached or virtually allocated state at any sampling instant.

Name	Description
Total	Total installed memory in the system
Used	Used memory
Free	Unused memory
Buffered	Memory used by kernel buffers
Cache	Memory used for page-cache and slabs
Allocated (virtaul)	The amount of memory presently allocated in the system. This is a sum of all of the memory which has been allocated by processes, even if it has not been “used” by them as of yet

Process

Process collector tracks process related information, including process name, pid, cpu utilization, memory, threads number, priority, processor etc.

Name	Description
PID	Process ID
Name	Process name
CPU Utilization	CPU utilization info. of the process, including user and system time
Memory	Resident Memory used by process
Threads	# of threads of the process
Priority	Scheduling priority of the process
Processor	CPU core(s) on which process executed during the monitoring period

Thread

Thread collector tracks thread related information, including thread name, tid, policy, processor, cpu utilization, priority etc.

Name	Description
TID	Thread ID
Name	Thread name
Policy	Scheduling policy of the thread
Priority	Scheduling priority of the thread
Processor	CPU core(s) on which the thread executed during the monitoring period
CPU Utilization	CPU utilization info. of the thread, including user and system time

Filesystem

Filesystem collector tracks file system info, including mount point, device, file type, volume etc.

Name	Description
Mount point	Mount path for the filesystem devices
Device	Device name and path
Type	Type of file system mounted on a device
Volume	Logical storage unit within a storage device
Max used	Max. capacity used in a storage unit