Just a reminder that libvirt binds need to be updated after patches introduced. Refer to libvirt python and perl bindings: commit b0a7747 Author: Pavel Hrdina <phrd...@redhat.com> Date: Fri Sep 20 11:14:35 2019 +0200
virDomainMemoryStats: include disk caches Introduced in libvirt 4.6.0 by commit <aee04655089>. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1683516 Signed-off-by: Pavel Hrdina <phrd...@redhat.com> Reviewed-by: Daniel P. Berrangé <berra...@redhat.com> commit e562e58 Author: Daniel P. Berrangé <berra...@redhat.com> Date: Wed May 22 14:07:57 2019 +0100 Add new hugetlb memory stats constants Signed-off-by: Daniel P. Berrangé <berra...@redhat.com> On Wed, Nov 13, 2019 at 6:34 PM Wang Huaqiang <huaqiang.w...@intel.com> wrote: > RDT is the short for Intel Resource Director Technology, consists > of four sub-technologies until now: > > -. CAT for cache allocation > -. CMT for cache usage monitoring > -. MBA for memory bandwidth allocation > -. MBM for memory bandwidth usage monitoring > > The Linux kernel interface is 'resctrl' file system, and we have > already implemented the support of CAT, CMT and MBA, to accomplish > the tasks such as allocating a part of shared CPU last level cache > to particular domain vcpu or a list of vcpus and monitoring the > usage of cache, or the task of allocating a mount of memory > bandwidth to specify domain vcpu(s). > > This series is to introduce the support of MBM. > > Basically the interfaces are: > > ** Identify host capability ** > > Similar to identify the host capability of CMT, it could be gotten > through the result of 'virsh capabilities', if following elements > are found, then MBM is supported: > > <memory_bandwidth> > <monitor maxMonitors='176'> > <feature name='mbm_total_bytes'/> > <feature name='mbm_local_bytes'/> > </monitor> > </memory_bandwidth> > > 'mbm_total_bytes' means supporting to report the memory bandwidth > used by the vcpu(s) of specific monitor on all CPU sockets. > > 'mbm_local_bytes' means supporting to report the memory bandwidth > used by vcpu(s) that is passing through local CPU socket. > > ** Create monitor group** > > The monitor group for specific domain vcpus, for example vcpu 0-4, > is defined in domain configuration file, in such kind of way: > > <cputune> > <memorytune vcpus='0-4'> > <monitor vcpus='0-4'/> > </memorytune> > </cputune> > > ** Report memory usage ** > > Introduced an option '--memory' against 'virsh domstats' command > to show the memory bandwidth usage in such way: > (also very similar to the format of CMT result.) > > # virsh domstats --memory > > Domain: 'libvirt-vm' > memory.bandwidth.monitor.count=4 > memory.bandwidth.monitor.0.name=vcpus_0-4 > memory.bandwidth.monitor.0.vcpus=0-4 > memory.bandwidth.monitor.0.node.count=2 > memory.bandwidth.monitor.0.node.0.id=0 > memory.bandwidth.monitor.0.node.0.bytes.total=14201651200 > memory.bandwidth.monitor.0.node.0.bytes.local=7369809920 > memory.bandwidth.monitor.0.node.1.id=1 > memory.bandwidth.monitor.0.node.1.bytes.total=188897640448 > memory.bandwidth.monitor.0.node.1.bytes.local=170044047360 > > > Huaqiang (5): > util, resctrl: using 64bit interface instead of 32bit for counters > conf: showing cache/memoryBW monitor features in capabilities > cachetune schema: a looser check for the order of <cache> and > <monitor> element > conf: Parse dommon configure file for memorytune monitors > virsh: show memoryBW info in 'virsh domstats' command > > docs/schemas/domaincommon.rng | 91 +++++++++--------- > include/libvirt/libvirt-domain.h | 1 + > src/conf/capabilities.c | 4 +- > src/conf/domain_conf.c | 44 +++++++-- > src/libvirt-domain.c | 21 +++++ > src/qemu/qemu_driver.c | 103 ++++++++++++++++++++- > src/util/virfile.c | 40 ++++++++ > src/util/virfile.h | 2 + > src/util/virresctrl.c | 6 +- > src/util/virresctrl.h | 2 +- > tests/genericxml2xmlindata/cachetune.xml | 1 + > tests/genericxml2xmlindata/memorytune.xml | 5 + > tests/genericxml2xmloutdata/cachetune.xml | 34 +++++++ > tests/genericxml2xmloutdata/memorytune.xml | 42 +++++++++ > tests/genericxml2xmltest.c | 4 +- > tools/virsh-domain-monitor.c | 7 ++ > tools/virsh.pod | 23 ++++- > 17 files changed, 367 insertions(+), 63 deletions(-) > create mode 100644 tests/genericxml2xmloutdata/cachetune.xml > create mode 100644 tests/genericxml2xmloutdata/memorytune.xml > > -- > 2.23.0 > > > -- > libvir-list mailing list > libvir-list@redhat.com > https://www.redhat.com/mailman/listinfo/libvir-list > > -- Best regards, ----------------------------------- Han Han Quality Engineer Redhat. Email: h...@redhat.com Phone: +861065339333
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