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authorPaolo Bonzini <pbonzini@redhat.com>2016-05-24 10:41:15 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2016-05-25 16:12:03 +0200
commitfd41b5a96948f67785458c04e9ddb5ef619251d5 (patch)
treeeb7b748e7f11ec14656544fed9f1fd2a386c2a92 /tools/kvm/kvm_stat/kvm_stat.txt
parentf9bc9e65fbec1781f64effc6bcc3b6edc57f8d19 (diff)
downloadlinux-fd41b5a96948f67785458c04e9ddb5ef619251d5.tar.gz
tools: Add kvm_stat man page
Converted from the Texinfo source in QEMU to asciidoc. The a2x incantation was provided by Janosch Frank. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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+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.
+
+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.
+
+Note that trace events are counted globally across all running guests.
+
+OPTIONS
+-------
+-1::
+--once::
+--batch::
+ run in batch mode for one second
+
+-l::
+--log::
+ run in logging mode (like vmstat)
+
+-t::
+--tracepoints::
+ retrieve statistics from tracepoints
+
+-d::
+--debugfs::
+ retrieve statistics from debugfs
+
+-f<fields>::
+--fields=<fields>::
+ fields to display (regex)
+
+-h::
+--help::
+ show help message
+
+SEE ALSO
+--------
+'perf'(1), 'trace-cmd'(1)
+
+AUTHOR
+------
+Stefan Hajnoczi <stefanha@redhat.com>