On 4/28/19 11:18 AM, Han Han wrote:
Qemu added reporting of virtio balloon new statistics stat-htlb-pgalloc and
stat-htlb-pgfail since qemu-3.0 commit b7b12644297. The value of
stat-htlb-pgalloc represents the number of successful hugetlb page allocations
while stat-htlb-pgfail represents the number of failed ones. Add this
statistics reporting to libvirt.
To enable this feature for vm, guest kenel >= 4.17 is required because
the exporting hugetlb page allocation for virtio balloon is introduced
since 6c64fe7f.
Signed-off-by: Han Han <h...@redhat.com>
---
include/libvirt/libvirt-domain.h | 14 +++++++++++++-
src/libvirt-domain.c | 5 ++++-
src/qemu/qemu_driver.c | 2 ++
src/qemu/qemu_monitor_json.c | 5 +++++
tools/virsh-domain-monitor.c | 4 ++++
tools/virsh.pod | 2 ++
6 files changed, 30 insertions(+), 2 deletions(-)
Just a note for anybody reading this, these are the hugepages within the
guest, i.e. 'virsh allocpages' run inside the guest, not host. Therefore ...
diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
index 7d36820b5a..192d25c1db 100644
--- a/include/libvirt/libvirt-domain.h
+++ b/include/libvirt/libvirt-domain.h
@@ -636,11 +636,23 @@ typedef enum {
*/
VIR_DOMAIN_MEMORY_STAT_DISK_CACHES = 10,
+ /*
+ * The amount of successful hugetlb(Huge Page Tables) allocations via
+ * virtio balloon.
+ */
+ VIR_DOMAIN_MEMORY_STAT_HUGETLB_PGALLOC = 11,
+
+ /*
+ * The amount of failed hugetlb(Huge Page Tables) allocations via
+ * virtio balloon.
+ */
+ VIR_DOMAIN_MEMORY_STAT_HUGETLB_PGFAIL = 12,
.. I'll update these to make it clearer.
ACKed and pushed, sorry for the delay.
Michal
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