mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 13:46:39 +07:00
f0cf040f84
Having stats for single VMs can help to determine the problem of a VM without the need of running other tools like perf. The tracepoints already allowed pid level monitoring, but kvm_stat didn't have support for it till now. Support for the newly implemented debugfs vm monitoring was also implemented. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
64 lines
1.1 KiB
Plaintext
64 lines
1.1 KiB
Plaintext
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.
|
|
|
|
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
|
|
|
|
-p<pid>::
|
|
--pid=<pid>::
|
|
limit statistics to one virtual machine (pid)
|
|
|
|
-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>
|