tools/kvm/kvm_stat/kvm_stat.txt

Source file repositories/reference/linux-study-clean/tools/kvm/kvm_stat/kvm_stat.txt

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System
Linux kernel
Corpus path
tools/kvm/kvm_stat/kvm_stat.txt
Extension
.txt
Size
2785 bytes
Lines
125
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: documentation
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

kvm_stat(1)
===========

NAME
----
kvm_stat - Report KVM kernel module event counters

SYNOPSIS
--------
[verse]
'kvm_stat' [OPTION]...

DESCRIPTION
-----------
kvm_stat prints counts of KVM kernel module trace events.  These events signify
state transitions such as guest mode entry and exit.

This tool is useful for observing guest behavior from the host perspective.
Often conclusions about performance or buggy behavior can be drawn from the
output.
While running in regular mode, use any of the keys listed in section
'Interactive Commands' below.
Use batch and logging modes for scripting purposes.

The set of KVM kernel module trace events may be specific to the kernel version
or architecture.  It is best to check the KVM kernel module source code for the
meaning of events.

INTERACTIVE COMMANDS
--------------------
[horizontal]
*b*::	toggle events by guests (debugfs only, honors filters)

*c*::	clear filter

*f*::	filter by regular expression
 ::     *Note*: Child events pull in their parents, and parents' stats summarize
                all child events, not just the filtered ones

*g*::	filter by guest name/PID

*h*::	display interactive commands reference

*o*::   toggle sorting order (Total vs CurAvg/s)

*p*::	filter by guest name/PID

*q*::	quit

*r*::	reset stats

*s*::   set delay between refreshs

*x*::	toggle reporting of stats for child trace events
 ::     *Note*: The stats for the parents summarize the respective child trace
                events

Press any other key to refresh statistics immediately.

OPTIONS
-------
-1::
--once::
--batch::
	run in batch mode for one second

-c::
--csv::
        log in csv format. Requires option -l/--log or -L/--log-to-file.
        When used with option -L/--log-to-file, the header is only ever

Annotation

Implementation Notes