std::deque<s4u::VirtualMachine*> VirtualMachineImpl::allVms_;
/* In the real world, processes on the guest operating system will be somewhat degraded due to virtualization overhead.
- * The total CPU share these processes get is smaller than that of the VM process gets on a host operating system. */
+ * The total CPU share these processes get is smaller than that of the VM process gets on a host operating system.
+ * FIXME: add a configuration flag for this
+ */
// const double virt_overhead = 0.95;
const double virt_overhead = 1;
*
* Equation 1 was solved in the physical machine layer.
* Equation 2 is solved in the virtual machine layer (here).
- * X1 must be passed to the virtual machine laye as a constraint value.
+ * X1 must be passed to the virtual machine layer as a constraint value.
**/
/* iterate for all virtual machines */
surf::Cpu* cpu = ws_vm->pimpl_cpu;
xbt_assert(cpu, "cpu-less host");
- double solved_value = ws_vm->pimpl_vm_->action_->getVariable()->value;
+ double solved_value = ws_vm->pimpl_vm_->action_->getVariable()
+ ->value; // this is X1 in comment above, what this VM got in the sharing on the PM
XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value, ws_vm->cname(), ws_vm->pimpl_vm_->getPm()->cname());
// TODO: check lmm_update_constraint_bound() works fine instead of the below manual substitution.
}
/* 2. Calculate resource share at the virtual machine layer. */
- adjustWeightOfDummyCpuActions();
+ ignoreEmptyVmInPmLMM();
- /* 3. Ready. Get the next occuring event */
+ /* 3. Ready. Get the next occurring event */
return surf_cpu_model_vm->nextOccuringEvent(now);
}
* Resource *
************/
-VirtualMachineImpl::VirtualMachineImpl(simgrid::s4u::VirtualMachine* piface, simgrid::s4u::Host* host_PM)
- : HostImpl(piface), hostPM_(host_PM)
+VirtualMachineImpl::VirtualMachineImpl(simgrid::s4u::VirtualMachine* piface, simgrid::s4u::Host* host_PM,
+ int coreAmount)
+ : HostImpl(piface), hostPM_(host_PM), coreAmount_(coreAmount)
{
/* Register this VM to the list of all VMs */
allVms_.push_back(piface);
/* We create cpu_action corresponding to a VM process on the host operating system. */
- /* FIXME: TODO: we have to periodically input GUESTOS_NOISE to the system? how ? */
- action_ = host_PM->pimpl_cpu->execution_start(0);
+ /* TODO: we have to periodically input GUESTOS_NOISE to the system? how ? */
+ action_ = host_PM->pimpl_cpu->execution_start(0, coreAmount);
/* Initialize the VM parameters */
params_.ramsize = 0;
VirtualMachineImpl::~VirtualMachineImpl()
{
onVmDestruction(this);
- allVms_.erase(find(allVms_.begin(), allVms_.end(), piface_));
+ /* I was already removed from the allVms set if the VM was destroyed cleanly */
+ auto iter = find(allVms_.begin(), allVms_.end(), piface_);
+ if (iter != allVms_.end())
+ allVms_.erase(iter);
/* dirty page tracking */
unsigned int size = xbt_dict_size(dp_objs);
static bool already_warned = false;
- if (size > 0 && !already_warned) {
+ if (size > 0 && not already_warned) {
xbt_dict_cursor_t cursor = nullptr;
xbt_dict_cursor_first(dp_objs, &cursor);
XBT_WARN("Dirty page tracking: %u pending task(s) on a destroyed VM (first one is %s).\n"
action_->suspend();
- smx_actor_t smx_process, smx_process_safe;
+ smx_actor_t smx_process;
+ smx_actor_t smx_process_safe;
xbt_swag_foreach_safe(smx_process, smx_process_safe, process_list) {
XBT_DEBUG("suspend %s", smx_process->name.c_str());
SIMIX_process_suspend(smx_process, issuer);
action_->resume();
- smx_actor_t smx_process, smx_process_safe;
+ smx_actor_t smx_process;
+ smx_actor_t smx_process_safe;
xbt_swag_foreach_safe(smx_process, smx_process_safe, process_list) {
XBT_DEBUG("resume %s", smx_process->cname());
SIMIX_process_resume(smx_process);
*/
void VirtualMachineImpl::shutdown(smx_actor_t issuer)
{
- if (getState() != SURF_VM_STATE_RUNNING)
- THROWF(vm_error, 0, "Cannot shutdown VM %s: it is not running", piface_->cname());
+ if (getState() != SURF_VM_STATE_RUNNING) {
+ const char* stateName = "(unknown state)";
+ switch (getState()) {
+ case SURF_VM_STATE_CREATED:
+ stateName = "created, but not yet started";
+ break;
+ case SURF_VM_STATE_SUSPENDED:
+ stateName = "suspended";
+ break;
+ case SURF_VM_STATE_DESTROYED:
+ stateName = "destroyed";
+ break;
+ default: /* SURF_VM_STATE_RUNNING or unexpected values */
+ THROW_IMPOSSIBLE;
+ break;
+ }
+ XBT_VERB("Shuting down the VM %s even if it's not running but %s", piface_->cname(), stateName);
+ }
xbt_swag_t process_list = piface_->extension<simgrid::simix::Host>()->process_list;
XBT_DEBUG("shutdown VM %s, that contains %d processes", piface_->cname(), xbt_swag_size(process_list));
- smx_actor_t smx_process, smx_process_safe;
+ smx_actor_t smx_process;
+ smx_actor_t smx_process_safe;
xbt_swag_foreach_safe(smx_process, smx_process_safe, process_list) {
XBT_DEBUG("kill %s", smx_process->cname());
SIMIX_process_kill(smx_process, issuer);
}
- setState(SURF_VM_STATE_CREATED);
+ setState(SURF_VM_STATE_DESTROYED);
/* FIXME: we may have to do something at the surf layer, e.g., vcpu action */
}
/* Update vcpu's action for the new pm */
/* create a cpu action bound to the pm model at the destination. */
- surf::CpuAction* new_cpu_action = static_cast<surf::CpuAction*>(destination->pimpl_cpu->execution_start(0));
+ surf::CpuAction* new_cpu_action =
+ static_cast<surf::CpuAction*>(destination->pimpl_cpu->execution_start(0, this->coreAmount_));
- surf::Action::State state = action_->getState();
- if (state != surf::Action::State::done)
- XBT_CRITICAL("FIXME: may need a proper handling, %d", static_cast<int>(state));
if (action_->getRemainsNoUpdate() > 0)
XBT_CRITICAL("FIXME: need copy the state(?), %f", action_->getRemainsNoUpdate());
/* keep the bound value of the cpu action of the VM. */
double old_bound = action_->getBound();
- if (old_bound != 0) {
+ if (old_bound > 0) {
XBT_DEBUG("migrate VM(%s): set bound (%f) at %s", vm_name, old_bound, pm_name_dst);
new_cpu_action->setBound(old_bound);
}
