Re: [libvirt] [PATCH 1/2] docs: virsh: Add minimal documentation for 'mbmt' and 'mbml' perf events

--- tools/virsh.pod | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/tools/virsh.pod b/tools/virsh.pod index 1e56660..b11e4c3 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -901,6 +901,8 @@ I<--interface> returns: I<--perf> returns the statistics of all enabled perf events: "perf.cache" - the cache usage in Byte currently used

+"perf.mbmt" - total system bandwidth from one level of cache +"perf.mbml" - bandwidth of memory traffic for a memory controller I<--block> returns information about disks associated with each domain. Using the I<--backing> flag extends this information to @@ -2180,9 +2182,12 @@ from different sources can be supported by perf. Currently only QEMU/KVM supports this command. The I<--enable> and I<--disable> option combined with B<eventSpec> can be used to enabled or disable specific performance event. B<eventSpec> is a string list of one or more events -separated by commas. However, just "cmt" event is supported presently. CMT is a -PQos (Platform Qos) feature to monitor the usage of cache by applications -running on the platform. +separated by commas. Valid event names are "cmt", "mbmt", "mbml". +CMT is a PQos (Platform Qos) feature to monitor the usage of cache by +applications running on the platform.

+ +The statistics can be retrieved using the B<domstats> command using the +I<--perf> flag. If I<--live> is specified, affect a running guest. If I<--config> is specified, affect the next boot of a persistent guest.