Werk #14356: Windows agent reports Virtual Size correctly

Component

Checks & agents

Title

Windows agent reports Virtual Size correctly

Date

Jun 21, 2022

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.2.0b1	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.1.0p4	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Previously, to report the Virtual size of a process Windows agent used metric 'VirtualSize' from WMI counter 'Win32_Process'. Unfortunately, in Windows this metric means not the Virtual size of process but the size of the process virtual address space, usually 2TB for 32-bit application. As a result monitoring information related to the process Virtial size was useless.

Since this release, Windows agent uses 'Commit Charge' Win32 metric to correctly report the Virtual size of a process, thus solving the problem. 'Commit Charge' is the total amount of virtual memory of a process that must be backed by either physical memory or the page file.

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