At Thu, 3 Jul 2014 15:58:41 +0200, Martin Kletzander wrote:
On Thu, Jul 03, 2014 at 04:31:46PM +0300, Gleb Voronich wrote:
Hello,
I'm trying to get memory usage statistic inside a guest machine using virDomainMemoryStats function at libvirt. According to http://libvirt.org/html/libvirt-libvirt.html#virDomainMemoryStatTags the structure could have a lot of useful memory statistic but the amount of parameters depends on the hypervisor and the driver. However using KVM I'm able to get VIR_DOMAIN_MEMORY_STAT_ACTUAL_BALLOON and VIR_DOMAIN_MEMORY_STAT_RSS only.
QEMU/KVM only supports these two IIRC.
Actually, you should get more stats when using the virtio balloon driver in your guests. E.g. the windows virtio driver supports these stats: SWAP_IN 0 /* Amount of memory swapped in */ SWAP_OUT 1 /* Amount of memory swapped out */ MAJFLT 2 /* Number of major faults */ MINFLT 3 /* Number of minor faults */ MEMFREE 4 /* Total amount of free memory */ MEMTOT 5 /* Total amount of memory */ See https://github.com/YanVugenfirer/kvm-guest-drivers-windows/blob/9a5cb6749d68... IFAIR, these should be queried by the virDomainMemoryStats function. Claudio -- BSc (Comp) Claudio Bley - Principal Software Engineer AV-TEST GmbH, Klewitzstr. 7, 39112 Magdeburg, Germany Phone: +49 391 6075460, Fax: +49 391 6075469 Web: <http://www.av-test.org> * https://twitter.com/avtestorg * https://facebook.com/avtestorg * * https://plus.google.com/100383867141221115206/ * Eingetragen am / Registered at: Amtsgericht Stendal (HRB 114076) Geschaeftsfuehrer (CEO): Andreas Marx, Guido Habicht, Maik Morgenstern Our services shall be effected on the basis of the General Terms and Conditions of AV-TEST GmbH, which are accessible under <http://www.av-test.org/en/av-test/terms-and-conditions/> or obtainable upon request. Unsere Leistungen erfolgen auf der Grundlage der Allgemeinen Geschäftsbedingungen der AV-TEST GmbH, die unter <http://www.av-test.org/av-test/agb/> abrufbar sind oder auf Anfrage übersandt werden.