+++ /dev/null
-/* Copyright (c) 2017-2018. The SimGrid Team. All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "simgrid/plugins/live_migration.h"
-#include "src/plugins/vm/VirtualMachineImpl.hpp"
-
-namespace simgrid {
-namespace vm {
-class VmDirtyPageTrackingExt {
- bool dp_tracking = false;
- std::map<kernel::activity::ExecImplPtr, double> dp_objs;
- double dp_updated_by_deleted_tasks = 0.0;
- // Percentage of pages that get dirty compared to netspeed [0;1] bytes per 1 flop execution
- double dp_intensity = 0.0;
- sg_size_t working_set_memory = 0.0;
- double max_downtime = 0.03;
- double mig_speed = 0.0;
-
-public:
- void start_tracking();
- void stop_tracking() { dp_tracking = false; }
- bool is_tracking() { return dp_tracking; }
- void track(kernel::activity::ExecImplPtr exec, double amount) { dp_objs.insert({exec, amount}); }
- void untrack(kernel::activity::ExecImplPtr exec) { dp_objs.erase(exec); }
- double get_stored_remains(kernel::activity::ExecImplPtr exec) { return dp_objs.at(exec); }
- void update_dirty_page_count(double delta) { dp_updated_by_deleted_tasks += delta; }
- double computed_flops_lookup();
- double get_intensity() { return dp_intensity; }
- void set_intensity(double intensity) { dp_intensity = intensity; }
- double get_working_set_memory() { return working_set_memory; }
- void set_working_set_memory(sg_size_t size) { working_set_memory = size; }
- void set_migration_speed(double speed) { mig_speed = speed; }
- double get_migration_speed() { return mig_speed; }
- double get_max_downtime() { return max_downtime; }
-
- static simgrid::xbt::Extension<VirtualMachineImpl, VmDirtyPageTrackingExt> EXTENSION_ID;
- virtual ~VmDirtyPageTrackingExt() = default;
- VmDirtyPageTrackingExt() = default;
-};
-
-simgrid::xbt::Extension<VirtualMachineImpl, VmDirtyPageTrackingExt> VmDirtyPageTrackingExt::EXTENSION_ID;
-
-void VmDirtyPageTrackingExt::start_tracking()
-{
- dp_tracking = true;
- for (auto const& elm : dp_objs)
- dp_objs[elm.first] = elm.first->get_remaining();
-}
-
-double VmDirtyPageTrackingExt::computed_flops_lookup()
-{
- double total = 0;
-
- for (auto const& elm : dp_objs) {
- total += elm.second - elm.first->get_remaining();
- dp_objs[elm.first] = elm.first->get_remaining();
- }
- total += dp_updated_by_deleted_tasks;
-
- dp_updated_by_deleted_tasks = 0;
-
- return total;
-}
-} // namespace vm
-} // namespace simgrid
-
-static void onVirtualMachineCreation(simgrid::vm::VirtualMachineImpl* vm)
-{
- vm->extension_set<simgrid::vm::VmDirtyPageTrackingExt>(new simgrid::vm::VmDirtyPageTrackingExt());
-}
-
-static void onExecCreation(simgrid::kernel::activity::ExecImplPtr exec)
-{
- simgrid::s4u::VirtualMachine* vm = dynamic_cast<simgrid::s4u::VirtualMachine*>(exec->host_);
- if (vm == nullptr)
- return;
-
- if (vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->is_tracking()) {
- vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->track(exec, exec->get_remaining());
- } else {
- vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->track(exec, 0.0);
- }
-}
-
-static void onExecCompletion(simgrid::kernel::activity::ExecImplPtr exec)
-{
- simgrid::s4u::VirtualMachine* vm = dynamic_cast<simgrid::s4u::VirtualMachine*>(exec->host_);
- if (vm == nullptr)
- return;
-
- /* If we are in the middle of dirty page tracking, we record how much computation has been done until now, and keep
- * the information for the lookup_() function that will called soon. */
- if (vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->is_tracking()) {
- double delta = vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->get_stored_remains(exec) -
- exec->get_remaining();
- vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->update_dirty_page_count(delta);
- }
- vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->untrack(exec);
-}
-
-void sg_vm_dirty_page_tracking_init()
-{
- if (not simgrid::vm::VmDirtyPageTrackingExt::EXTENSION_ID.valid()) {
- simgrid::vm::VmDirtyPageTrackingExt::EXTENSION_ID =
- simgrid::vm::VirtualMachineImpl::extension_create<simgrid::vm::VmDirtyPageTrackingExt>();
- simgrid::vm::VirtualMachineImpl::on_creation.connect(&onVirtualMachineCreation);
- simgrid::kernel::activity::ExecImpl::onCreation.connect(&onExecCreation);
- simgrid::kernel::activity::ExecImpl::onCompletion.connect(&onExecCompletion);
- }
-}
-
-void sg_vm_start_dirty_page_tracking(sg_vm_t vm)
-{
- vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->start_tracking();
-}
-
-void sg_vm_stop_dirty_page_tracking(sg_vm_t vm)
-{
- vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->stop_tracking();
-}
-
-double sg_vm_lookup_computed_flops(sg_vm_t vm)
-{
- return vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->computed_flops_lookup();
-}
-
-void sg_vm_set_dirty_page_intensity(sg_vm_t vm, double intensity)
-{
- vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->set_intensity(intensity);
-}
-
-double sg_vm_get_dirty_page_intensity(sg_vm_t vm)
-{
- return vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->get_intensity();
-}
-
-void sg_vm_set_working_set_memory(sg_vm_t vm, sg_size_t size)
-{
- vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->set_working_set_memory(size);
-}
-
-sg_size_t sg_vm_get_working_set_memory(sg_vm_t vm)
-{
- return vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->get_working_set_memory();
-}
-
-void sg_vm_set_migration_speed(sg_vm_t vm, double speed)
-{
- vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->set_migration_speed(speed);
-}
-
-double sg_vm_get_migration_speed(sg_vm_t vm)
-{
- return vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->get_migration_speed();
-}
-
-double sg_vm_get_max_downtime(sg_vm_t vm)
-{
- return vm->getImpl()->extension<simgrid::vm::VmDirtyPageTrackingExt>()->get_max_downtime();
-}
