Processes Statistics

Performance

Statistics shows performance counters of selected processes. This window contains following blocks:

  • Performance
  • Memory
  • Input/Output Operations

Performance

This block shows following counters:

  • Work Time - Time pasts since a process was created [days hours minutes] or [hh:mm:ss]
  • CPU Usage - Processor usage by a process
  • Kernel Time - Kernel mode processor usage mm:ss.ms
  • User Mode Time - User mode processor usage mm:ss.ms
  • CPU Total Time - Processor time usage. Sum of Kernel mode usage and User mode usage.
  • Threads - Number of active threads associated with a process. A thread is the object that executes an instruction. Each running process has at least one thread.
  • Handles - Total number of open handles owned by the process. Handles count is the sum of the handles currently open by each thread in this process. A handle is used to examine or modify the system resources. Each handle has an entry in a table that is maintained internally. Entries contain the addresses of the resources and data to identify the resource type.
  • GDI objects - The count of GDI objects in use by the process
  • USER objects - The count of USER objects in use by the process
  • Page Faults - Number of page faults generated by the process

Memory

This block shows following counters:

  • Memory Size - Set of memory pages visible to the process in physical RAM. These pages are resident, and available for an application to use without triggering a page fault. If adequate memory is not available, "disk thrashing" occurs. (Disk thrashing refers to those times when the operating system must repeatedly access the hard disk.)
  • Pagefile Usage - Amount of pagefile space currently used by the process
  • Virtual Size - Current size of the virtual address space that a process is using, not the physical or virtual memory actually used by the process. Using virtual address space does not necessarily imply corresponding use of either disk or main memory pages. Virtual space is finite, and by using too much, the process might not be able to load libraries.
  • Peak Memory Size - Maximum size of the working set used by the process since it was created
  • Peak Pagefile Usage - Maximum amount of page file space used during the life of a process
  • Peak Virtual Size - Maximum virtual address space a process uses at any one time

Input/Output Operations

This block shows following counters:

  • Read Operations - Number of read operations performed
  • Write Operations - Number of write operations performed
  • Other IO Operation - Number of I/O operations performed, other than read and write operations
  • Read Bytes - Amount of data read
  • Write Bytes - Amount of data written
  • Other IO Bytes - Amount of data transferred during operations that are not read or write operations
  • IO Activity - IO speed, summarized amount of data read, write and transferred per second