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...ring memory. As > soon as you move to a "public" cloud environment where multiple > customers are sharing a single host then you will need a "bad cop" to > enforce some limits. (Yes I know ballooning always requires guest > cooperation, but when you combine it with punative cgroups on the host > the guest has a compelling reason to cooperate.) When I say "bad > cop", I mean a completely host-controlled balloon as we currently do > in oVirt with the Memory Overcommitment Manager [2]. This allows > customers to expect a certain minimum amount...

...ring memory. As > soon as you move to a "public" cloud environment where multiple > customers are sharing a single host then you will need a "bad cop" to > enforce some limits. (Yes I know ballooning always requires guest > cooperation, but when you combine it with punative cgroups on the host > the guest has a compelling reason to cooperate.) When I say "bad > cop", I mean a completely host-controlled balloon as we currently do > in oVirt with the Memory Overcommitment Manager [2]. This allows > customers to expect a certain minimum amount...

Hi all! We're debating the design of the balloon for the OASIS spec. Noone likes the current one, but there are fundamental usage pattern questions which we're fumbling with. So if you know anyone who is using it in production? If, so, how? In particular, would you be happy with guests simply giving the host back whatever memory they can spare (as Xen's self-balloon does)?

Hi all! We're debating the design of the balloon for the OASIS spec. Noone likes the current one, but there are fundamental usage pattern questions which we're fumbling with. So if you know anyone who is using it in production? If, so, how? In particular, would you be happy with guests simply giving the host back whatever memory they can spare (as Xen's self-balloon does)?

...achines that are sharing memory. As soon as you move to a "public" cloud environment where multiple customers are sharing a single host then you will need a "bad cop" to enforce some limits. (Yes I know ballooning always requires guest cooperation, but when you combine it with punative cgroups on the host the guest has a compelling reason to cooperate.) When I say "bad cop", I mean a completely host-controlled balloon as we currently do in oVirt with the Memory Overcommitment Manager [2]. This allows customers to expect a certain minimum amount of performance. In...

...>> soon as you move to a "public" cloud environment where multiple >> customers are sharing a single host then you will need a "bad cop" to >> enforce some limits. (Yes I know ballooning always requires guest >> cooperation, but when you combine it with punative cgroups on the host >> the guest has a compelling reason to cooperate.) When I say "bad >> cop", I mean a completely host-controlled balloon as we currently do >> in oVirt with the Memory Overcommitment Manager [2]. This allows >> customers to expect a certain...