Commit 1eaa2f90 authored by Stefan Raspl's avatar Stefan Raspl Committed by Paolo Bonzini

tools/kvm_stat: document list of interactive commands

Apart from the source code, there does not seem to be a place that documents
the interactive capabilities of kvm_stat yet.
Signed-off-by: default avatarStefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: default avatarRadim Krčmář <rkrcmar@redhat.com>
parent 184b2d23
......@@ -1052,6 +1052,13 @@ Requirements:
CAP_SYS_ADMIN and perf events are used.
- CAP_SYS_RESOURCE if the hard limit is not high enough to allow
the large number of files that are possibly opened.
Interactive Commands:
f filter by regular expression
p filter by PID
q quit
x toggle reporting of stats for individual child trace events
Press any other key to refresh statistics immediately.
"""
class PlainHelpFormatter(optparse.IndentedHelpFormatter):
......
......@@ -18,11 +18,27 @@ 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]
*f*:: filter by regular expression
*p*:: filter by PID
*q*:: quit
*x*:: toggle reporting of stats for child trace events
Press any other key to refresh statistics immediately.
OPTIONS
-------
-1::
......
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