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1265 lines (1188 loc) · 47.3 KB
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#include<iostream>
#include<string>
#include<vector>
#include<unordered_map>
#include<unordered_set>
#include<sstream>
#include<cassert>
#include<cstring>
#include<algorithm>
#include<ctime>
#include <chrono>
using namespace std;
#define TEST
int testedFile = 2;
// #define ONE_KIND_ALL_DAYS // 所有天固定一种
#define ONE_KIND_PER_K_DAYS // 每个K天固定一种
// #define USE_vmToMinPowerCostServer // 买最便宜
// #define USE_vmToMinCostServer // 买启发代价最小,效果不好,需要调参
/*
迁移策略:0-continue
1-continue + break
2-连续4次失败退出
3-累计20次失败退出
*/
int migrationVersion = 0; ///////////////////////////////////////////////// 0
int cnt_fail_thr = 3000;
double ratio_thr = 0.5; //0.2 0.4 0.5 ///////////////////////////////////////////////////////////////
double myRatio = 1.0;
double modified_myRatio = 1.0; // modified_myRatio = myRatio * modified_alpha
double modified_alpha = 1;
/*
1. 改进:增加迁移次数
2. 可以调的参数:myRatio、找c/m最接近的那个服务器时的阈值、getCost3中的alpha、迁移时早停参数
3. 潜在的问题:bestFit和bestFit2为啥又区别?前者略慢一点,但成本略小一点
*/
const int INF = 0x3f3f3f3f;
const char* AB[] = {"A", "B"};
const string inputFilePaths[3] = {" ","training-data/training-1.txt", "training-data/training-2.txt"};
string inputFilePath = inputFilePaths[testedFile];
const string outputFilePath = "output.txt";
string serverModel; // hostATVAZ hostDPJA1 host7SRCB
int deployVersion = 0; //
const int maxT = 1000;
int T, K;
typedef pair<int, int>PII;
typedef pair<string, int>PSI;
struct Tuple{
int serverId, node, vmId;
};
struct ServerInfo{
int core, mem;
int cost_hardware, cost_power;
string model;
double cm;
};
struct VirtualMachineInfo{
int core, mem, type;
double cm;
};
struct Position{
int idx, node;
};
struct MigrateInfo{
int vm_id,server_id, node;
};
unordered_map<string, ServerInfo>serverDict;
unordered_map<string, ServerInfo>bigServerDict; ////////////////////////////////// 可能不好!!!!!!!!
vector<ServerInfo>sortedServerList; // 按照电费排序的服务器列表
unordered_map<string, VirtualMachineInfo>vmDict;
unordered_map<int, Position>vmToServer;
unordered_map<string, string>vmToMinPowerCostServer;
unordered_map<string, string>vmToMinCostServer[maxT];
struct Request{
char op;
string model;
int id;
};
class Server{
public:
int core[2], mem[2]; // left
int powerCost;
int id;
int capacity_core, capacity_mem;
unordered_map<int, VirtualMachineInfo>vms;
Server(const ServerInfo& serverInfo){
capacity_core = serverInfo.core;
capacity_mem = serverInfo.mem;
core[0] = core[1] = serverInfo.core/2;
mem[0] = mem[1] = serverInfo.mem/2;
this->powerCost = serverInfo.cost_power;
vms.clear();
}
double getTotalLeft(){
return (this->core[0] + this->core[1])*modified_myRatio +
(this->mem[0] + this->mem[1]);
}
double getTotalUsed(){
return this->capacity_core + this->capacity_mem - this->getTotalLeft();
}
// 插入后的平衡性 ?????????直接作差似乎有问题??????????????????????????
bool getCost2(VirtualMachineInfo& vm, PII& res){
if(vm.type == 0){ // 单结点虚拟机
int minCost = INF, minNode = -1;
for(int node = 0; node < 2; node++){
if(core[node] >= vm.core && mem[node] >= vm.mem){
int cost = abs((core[node] - vm.core)*modified_myRatio - (mem[node] - vm.mem));
if(cost < minCost){
minCost = cost;
minNode = node;
}
}
}
if(minNode == -1) return false;
res = {minNode, minCost};
return true;
}else{ // 双节点虚拟机
for(int node = 0; node < 2; node++){
if(core[node] < vm.core/2 || mem[node] < vm.mem/2) return false;
}
int cost = abs((core[0] - vm.core/2 + core[1] - vm.core/2)*modified_myRatio -
(mem[0] - vm.mem/2 + mem[1] - vm.mem/2));
res = {2, cost};
return true;
}
return false;
}
// 剩下的的资源总量
bool getCost(VirtualMachineInfo& vm, PII& res){
if(vm.type == 0){ // 单结点虚拟机
int minCost = INF, minNode = -1;
for(int node = 0; node < 2; node++){
if(core[node] >= vm.core && mem[node] >= vm.mem){
int cost = this->getTotalLeft();
if(cost < minCost){
minCost = cost;
minNode = node;
}
}
}
if(minNode == -1) return false;
res = {minNode, minCost};
return true;
}else{ // 双节点虚拟机
for(int node = 0; node < 2; node++){
if(core[node] < vm.core/2 || mem[node] < vm.mem/2) return false;
}
int cost = this->getTotalLeft();
res = {2, cost};
return true;
}
return false;
}
// 平衡性 + alpha*所剩资源 ????????????? alpha可作为参数 ???????????????????????????????
bool getCost3(VirtualMachineInfo& vm, PII& res){
if(vm.type == 0){ // 单结点虚拟机
int minCost = INF, minNode = -1;
for(int node = 0; node < 2; node++){
if(core[node] >= vm.core && mem[node] >= vm.mem){
int cost1 = abs((core[node] - vm.core)*modified_myRatio - (mem[node] - vm.mem));
int cost2 = this->getTotalLeft();
int cost = cost1 + cost2;
if(cost < minCost){
minCost = cost;
minNode = node;
}
}
}
if(minNode == -1) return false;
res = {minNode, minCost};
return true;
}else{ // 双节点虚拟机
for(int node = 0; node < 2; node++){
if(core[node] < vm.core/2 || mem[node] < vm.mem/2) return false;
}
int cost1 = abs((core[0] - vm.core/2 + core[1] - vm.core/2)*modified_myRatio -
(mem[0] - vm.mem/2 + mem[1] - vm.mem/2));
int cost2 = this->getTotalLeft();
int cost = cost1 + cost2;
res = {2, cost};
return true;
}
return false;
}
// 未知插入节点************************
// A B节点无区别插;
int addVm(VirtualMachineInfo& vm, int id){
if(vm.type == 0){ // 单结点虚拟机
for(int node = 0; node < 2; node++){
if(core[node] >= vm.core && mem[node] >= vm.mem){
core[node] -= vm.core;
mem[node] -= vm.mem;
vms[id] = vm;
return node;
}
}
}else{ // 双节点虚拟机
for(int node = 0; node < 2; node++){
if(core[node] < vm.core/2 || mem[node] < vm.mem/2) return -1;
}
core[0] -= vm.core/2; core[1] -= vm.core/2;
mem[0] -= vm.mem/2; mem[1] -= vm.mem/2;
vms[id] = vm;
return 2;
}
return -1;
}
int addVm(string model, int id){
VirtualMachineInfo vm = vmDict[model];
if(vm.type == 0){ // 单结点虚拟机
for(int node = 0; node < 2; node++){
if(core[node] >= vm.core && mem[node] >= vm.mem){
core[node] -= vm.core;
mem[node] -= vm.mem;
vms[id] = vm;
return node;
}
}
}else{ // 双节点虚拟机
for(int node = 0; node < 2; node++){
if(core[node] < vm.core/2 || mem[node] < vm.mem/2) return -1;
}
core[0] -= vm.core/2; core[1] -= vm.core/2;
mem[0] -= vm.mem/2; mem[1] -= vm.mem/2;
vms[id] = vm;
return 2;
}
return -1;
}
// A B节点有选择地插 ???????????????? 如何做选择,值得再考虑????????????????????????
int addVm2(VirtualMachineInfo& vm, int id){
PII res;
int ok = this->getCost(vm, res);
if(!ok) return -1;
this->addVm(vm, id, res.first);
return res.first;
}
// 已知插入节点*************************
void addVm(string model, int id, int node){
VirtualMachineInfo vm = vmDict[model];
if(vm.type == 0){ // 单结点虚拟机
core[node] -= vm.core;
mem[node] -= vm.mem;
vms[id] = vm;
}else{ // 双节点虚拟机
core[0] -= vm.core/2; core[1] -= vm.core/2;
mem[0] -= vm.mem/2; mem[1] -= vm.mem/2;
vms[id] = vm;
}
}
void addVm(VirtualMachineInfo& vm, int id, int node){
if(vm.type == 0){ // 单结点虚拟机
core[node] -= vm.core;
mem[node] -= vm.mem;
vms[id] = vm;
}else{ // 双节点虚拟机
core[0] -= vm.core/2; core[1] -= vm.core/2;
mem[0] -= vm.mem/2; mem[1] -= vm.mem/2;
vms[id] = vm;
}
}
/*
node: 0-A节点,1-B节点,2-AB节点
*/
void delVm(int id, int node){
VirtualMachineInfo vm = vms[id];
if(node == 0 || node == 1){
core[node] += vm.core;
mem[node] += vm.mem;
}else{
core[0] += vm.core/2; core[1] += vm.core/2;
mem[0] += vm.mem/2; mem[1] += vm.mem/2;
}
vms.erase(id);
}
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// %%%%%%%%%%%%%%%%%%%% debug用 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
void printInfo(){
cout << "A: " << core[0] << ' ' << mem[0] << endl;
cout << "B: " << core[1] << ' ' << mem[1] << endl;
cout << "capacity_core: " << capacity_core << " capacity_mem: " << capacity_mem << endl;
}
};
void buildOutputStream(const vector<PSI>&book, const vector<MigrateInfo>&migrationInfo, const vector<Tuple>addInfo, vector<int>&idxForAddInfo){ //
cout << "(purchase, " << book.size() << ")\n";
for(auto& kv : book){
cout << "(" << kv.first << ", " << kv.second << ")\n";
}
cout << "(migration, " << migrationInfo.size() << ")" << endl;
for(auto& e : migrationInfo){
if(e.node == 2){
cout << "(" << e.vm_id << ", " << e.server_id << ")\n";
}else{
cout << "(" << e.vm_id << ", " << e.server_id << ", " << AB[e.node] << ")\n";
}
}
int n = idxForAddInfo.size();
int A[n];
for(int i = 0; i < n; i++){
A[idxForAddInfo[i]] = i;
}
for(int i = 0; i < n; i++){
const Tuple& e = addInfo[A[i]];
int id = e.serverId, node = e.node;
if(node != 2) cout << "(" << id << ", " << AB[node] << ")\n" ;
else cout << "(" << id << ")\n";
}
fflush(stdout);
}
class ServerResource{
public:
vector<Server>servers;
unordered_set<int>emptyServers, notEmptyServers;
long long COST_HARDWARE, COST_POWER;
vector<vector<Request>>allRequests; int currentDay;
vector<double>totalCoreOfEachDay, totalMemOfEachDay;
double totalCoreInKDays, totalMemInKDays;
vector<PSI>purchaseInfo; // (server_model, vm_id)
vector<MigrateInfo>migrationInfo;
vector<Tuple>addInfo; // serverId, node, vmId;
vector<int>idxForAddInfo;
vector<PSI>addRequests;
int totalVm = 0;
int delNumInLastDay;
int delNumInLastDay_max;
// int totalMigration = 0;
bool used = false;
ServerResource(){
servers.clear();
COST_HARDWARE = COST_POWER = 0;
this->totalVm = 0;
this->currentDay = 0;
totalCoreInKDays = totalMemInKDays = 0;
this->used = false;
}
void getRequestsInTheFirstKDays(vector<Request>requestsInTheFirstKDays[]){
for(int i = 0; i < K; i++){
allRequests.push_back(requestsInTheFirstKDays[i]);
double totalCore = 0, totalMem = 0;
for(auto& req : allRequests.back()){
if(req.op == 'a'){
VirtualMachineInfo& vm = vmDict[req.model];
totalCore += vm.core;
totalMem += vm.mem;
}
}
this->totalCoreOfEachDay.push_back(totalCore);
this->totalMemOfEachDay.push_back(totalMem);
this->totalCoreInKDays += totalCore;
this->totalMemInKDays += totalMem;
}
this->handleRequestsInOneDay();
}
void getRequestInOneDay(vector<Request>&requests){
allRequests.push_back(requests);
double totalCore = 0, totalMem = 0;
for(auto& req : allRequests.back()){
if(req.op == 'a'){
VirtualMachineInfo& vm = vmDict[req.model];
totalCore += vm.core;
totalMem += vm.mem;
}
}
this->totalCoreOfEachDay.push_back(totalCore);
this->totalMemOfEachDay.push_back(totalMem);
this->totalCoreInKDays += totalCore;
this->totalMemInKDays += totalMem;
this->totalCoreInKDays -= this->totalCoreOfEachDay[this->currentDay-1];
this->totalMemInKDays -= this->totalMemOfEachDay[this->currentDay-1];
this->handleRequestsInOneDay();
}
void handleLeftRequests(){
while(currentDay < T){
this->totalCoreInKDays -= this->totalCoreOfEachDay[this->currentDay-1];
this->totalMemInKDays -= this->totalMemOfEachDay[this->currentDay-1];
this->handleRequestsInOneDay();
}
}
// 末尾this->currentDay++;
void handleRequestsInOneDay(){
// 处理的是第currentDay天的请求,但是能够看到后面K(最后小于K)天。
// 即能够看到 requestsInKDays[currentDay...-1]
vector<Request>& requests = this->allRequests[currentDay];
#ifdef ONE_KIND_PER_K_DAYS
myRatio = this->totalCoreInKDays/this->totalMemInKDays;
modified_myRatio = 1/myRatio;
if(modified_myRatio > 1) modified_myRatio *= 1.2;
else modified_myRatio /= 1.2;
auto getBestServerModel = [&]()->string{
// 找到比例和myRatio较为接近且相对便宜并且能够容纳所有虚拟机的服务器
// //////////////////// 注意:目前实际上是找再阈值之内的,或出错
///////////////////////////////////////////////////////////////
double minCost = INF; string model;
for(auto& server : bigServerDict){
if(abs(myRatio-server.second.cm) > ratio_thr) continue;
double cost = server.second.cost_hardware + (T-currentDay)*server.second.cost_power; //////////////////
if(cost < minCost){
minCost = cost;
model = server.first;
}
}
return model;
};
serverModel = getBestServerModel();
#endif
#ifdef TEST
for(auto& s : emptyServers){
if(!servers[s].vms.empty()){
assert(servers[s].vms.empty());
}
}
for(auto& s : notEmptyServers){
assert(!servers[s].vms.empty());
}
#endif
this->addInfo.clear();
this->purchaseInfo.clear();
this->idxForAddInfo.clear();
this->addRequests.clear();
this->migrationInfo.clear();
// #ifdef TEST
// cout << "before migration: " << this->getEmptyNumber() << endl;
// #endif
this->migrateByVersion(migrationVersion);
// #ifdef TEST
// cout << "after migration: " << this->getEmptyNumber() << endl;
// cout << this->servers.size() << endl;
// this->printServers(); cout << endl;
// cout << "############################################################\n";
// #endif
int n = requests.size();
int cnt_add = 0;
this->delNumInLastDay = 0;
for(int i = 0; i < n;){
if(requests[i].op == 'a'){
int j = i;
while(j < n && requests[j].op == 'a'){
addRequests.push_back({requests[j].model, requests[j].id});
j++;
}
for(int k = 0; k < (j-i); k++) idxForAddInfo.push_back(cnt_add + k);
// 给add请求按照所要求的资源从大到小排序
sort(this->idxForAddInfo.begin() + cnt_add, this->idxForAddInfo.begin() + cnt_add + j-i, [&](int x, int y){
return modified_myRatio*vmDict[addRequests[x].first].core + vmDict[addRequests[x].first].mem
> modified_myRatio*vmDict[addRequests[y].first].core + vmDict[addRequests[y].first].mem;
});
for(int k = cnt_add; k < cnt_add + j-i; k++) {
PSI& addRequest = addRequests[idxForAddInfo[k]];
this->deployByVersion(addRequest.first, addRequest.second, deployVersion);
this->totalVm++;
}
cnt_add += j - i;
i = j;
} else {
this->handleDeleteRequest(requests[i].id);
this->totalVm--;
this->delNumInLastDay++;
i++;
}
}
if(this->currentDay < T/3){
this->delNumInLastDay_max = max(this->delNumInLastDay_max, this->delNumInLastDay);
}
n = this->purchaseInfo.size();
vector<PSI>book;
// 编号重排,构造输出信息
if(n > 0){
int res[n]; memset(res, -1, sizeof(res));
int cnt = 0;
for(int i = 0; i < n; i++){
if(res[i] != -1) continue;
res[i] = cnt++;
int j = i+1, num = 1;
for(; j < n; j++){
if(this->purchaseInfo[j].first == this->purchaseInfo[i].first){
res[j] = cnt++;
num++;
}
}
book.push_back({purchaseInfo[i].first, num});
}
// 新购买的服务器,需要修改其id
for(int i = 0; i < n; i++){
auto& pi = purchaseInfo[i];
const Position& pos = vmToServer[pi.second];
this->servers[pos.idx].id = this->servers.size() - n + res[i];
}
// 部署信息
for(auto& e : addInfo){
const Position& pos = vmToServer[e.vmId];
e.serverId = this->servers[pos.idx].id;
}
}
buildOutputStream(book, this->migrationInfo, addInfo, this->idxForAddInfo); //, this->idxForAddInfo
#ifdef TEST
this->calPowerCost();
#endif
this->currentDay++;
}
string purchaseAsRequired(string vmModel){
VirtualMachineInfo& vm = vmDict[vmModel];
#ifdef ONE_KIND_PER_K_DAYS
string preferedModel = serverModel;
#endif
#ifdef ONE_KIND_ALL_DAYS
string preferedModel = serverModel;
#endif
#ifdef USE_vmToMinPowerCostServer
string preferedModel = vmToMinPowerCostServer[vmModel];
#endif
#ifdef USE_vmToMinCostServer
string preferedModel = vmToMinCostServer[this->currentDay][vmModel];
#endif
ServerInfo server = serverDict[preferedModel];
this->servers.push_back(server);
#ifdef TEST
COST_HARDWARE += server.cost_hardware;
#endif
return preferedModel;
}
void migrateByVersion(int version){
switch (version){
case 0:
this->migrate0();
break;
case 1:
this->migrate1();
break;
case 2:
this->migrate2();
break;
case 3:
this->migrate3();
break;
default:
break;
}
}
void deployByVersion(string model, int id, int version){
switch (version){
case 0:
this->deploy0(model, id);
break;
default:
break;
}
}
/////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////
// 无早停
// 无早停
void migrate0(){
int n = this->servers.size();
int total = this->totalVm;
int limit = 3*total/100, curMigrationNum = 0;
auto migrate = [&](){
int m = this->emptyServers.size(); // 空的服务器个数,迁移的时候不考虑空服务器
#ifdef TEST
assert(emptyServers.size() + notEmptyServers.size() == n);
#endif
int idx[n]; for(int i = 0; i < n; i++) idx[i] = i;
sort(idx, idx + n, [&](int x, int y){ //////////////////////////// 或需要修改
return this->servers[x].getTotalLeft() > this->servers[y].getTotalLeft();
// return this->servers[x].getTotalUsed() < this->servers[y].getTotalUsed();
// return this->servers[x].vms.size() < this->servers[y].vms.size();
});
int end = m + (n-m)*1/3;
int using_chance = false;
for(int i = m; i < end; i++){
Server& server = this->servers[idx[i]];
vector<PII>deleted; // (vm_id, node)
for(auto& vm : server.vms){
if(curMigrationNum+1 > limit){
if(this->currentDay > T/2){
if(!this->used){
using_chance = true;
end = n;
}
}
if(!using_chance)break;
}
int node = -1;
int toServer = n-1;
while(toServer > i && (node = this->servers[idx[toServer]].addVm2(vm.second, vm.first)) == -1){
toServer--;
}
if(node == -1){ // 无处可插
continue ;
// break;
}else{ // 可以迁移
// server.delVm(vm.first, node, false); // 不能在这里删除!!!!!
this->migrationInfo.push_back({vm.first, this->servers[idx[toServer]].id, node});
deleted.push_back({vm.first, vmToServer[vm.first].node}); // 收集delete信息,待本服务器这个vm循环退出再一起移除。
vmToServer[vm.first] = {idx[toServer], node};
this->notEmptyServers.insert(idx[toServer]);
this->emptyServers.erase(idx[toServer]);
curMigrationNum++;
}
}
for(auto& pii : deleted){
server.delVm(pii.first, pii.second);
}
if(server.vms.empty()){
this->emptyServers.insert(idx[i]);
this->notEmptyServers.erase(idx[i]);
}
if(curMigrationNum+1 > limit && !using_chance) break;
}
if(using_chance){
this->used = true;
}
};
migrate();
return;
}
// 配合 continue + break
void migrate1(){
int n = this->servers.size();
int total = this->totalVm;
int limit = 3*total/100, curMigrationNum = 0;
///////////////////////////////////////////////////////////////////////////////// first
int m = this->emptyServers.size(); // 空的服务器个数,迁移的时候不考虑空服务器
#ifdef TEST
assert(emptyServers.size() + notEmptyServers.size() == n);
#endif
int idx[n]; for(int i = 0; i < n; i++) idx[i] = i;
sort(idx, idx + n, [&](int x, int y){ //////////////////////////// 或需要修改
return this->servers[x].getTotalLeft() > this->servers[y].getTotalLeft();
// return this->servers[x].getTotalUsed() < this->servers[y].getTotalUsed();
// return this->servers[x].vms.size() < this->servers[y].vms.size();
});
int end = m + (n-m)*2/3;
for(int i = m; i < end; i++){
Server& server = this->servers[idx[i]];
vector<PII>deleted; // (vm_id, node)
for(auto& vm : server.vms){
if(curMigrationNum+1 > limit) break;
int node = -1;
int toServer = n-1;
while(toServer > i && (node = this->servers[idx[toServer]].addVm2(vm.second, vm.first)) == -1){
toServer--;
}
if(node == -1){ // 无处可插
continue ;
// break;
}else{ // 可以迁移
// server.delVm(vm.first, node, false); // 不能在这里删除!!!!!
this->migrationInfo.push_back({vm.first, this->servers[idx[toServer]].id, node});
deleted.push_back({vm.first, vmToServer[vm.first].node}); // 收集delete信息,待本服务器这个vm循环退出再一起移除。
vmToServer[vm.first] = {idx[toServer], node};
this->notEmptyServers.insert(idx[toServer]);
this->emptyServers.erase(idx[toServer]);
curMigrationNum++;
}
}
for(auto& pii : deleted){
server.delVm(pii.first, pii.second);
}
if(server.vms.empty()){
this->emptyServers.insert(idx[i]);
this->notEmptyServers.erase(idx[i]);
}
if(curMigrationNum+1 > limit) break;
}
/////////////////////////////////////////////////////////////////////////////// second
m = this->emptyServers.size(); // 空的服务器个数,迁移的时候不考虑空服务器
#ifdef TEST
assert(emptyServers.size() + notEmptyServers.size() == n);
#endif
for(int i = 0; i < n; i++) idx[i] = i;
sort(idx, idx + n, [&](int x, int y){ //////////////////////////// 或需要修改
return this->servers[x].getTotalLeft() > this->servers[y].getTotalLeft();
// return this->servers[x].getTotalUsed() < this->servers[y].getTotalUsed();
// return this->servers[x].vms.size() < this->servers[y].vms.size();
});
end = m + (n-m)*2/3;
for(int i = m; i < end; i++){
Server& server = this->servers[idx[i]];
vector<PII>deleted; // (vm_id, node)
for(auto& vm : server.vms){
if(curMigrationNum+1 > limit) break;
int node = -1;
int toServer = n-1;
while(toServer > i && (node = this->servers[idx[toServer]].addVm2(vm.second, vm.first)) == -1){
toServer--;
}
if(node == -1){ // 无处可插
// continue ;
break;
}else{ // 可以迁移
// server.delVm(vm.first, node, false); // 不能在这里删除!!!!!
this->migrationInfo.push_back({vm.first, this->servers[idx[toServer]].id, node});
deleted.push_back({vm.first, vmToServer[vm.first].node}); // 收集delete信息,待本服务器这个vm循环退出再一起移除。
vmToServer[vm.first] = {idx[toServer], node};
this->notEmptyServers.insert(idx[toServer]);
this->emptyServers.erase(idx[toServer]);
curMigrationNum++;
}
}
for(auto& pii : deleted){
server.delVm(pii.first, pii.second);
}
if(server.vms.empty()){
this->emptyServers.insert(idx[i]);
this->notEmptyServers.erase(idx[i]);
}
if(curMigrationNum+1 > limit) break;
}
return;
}
// 连续4次失败退出
void migrate2(){
int n = this->servers.size();
int total = this->totalVm;
int limit = 3*total/100, curMigrationNum = 0;
auto migrate = [&](){
int m = this->emptyServers.size(); // 空的服务器个数,迁移的时候不考虑空服务器
#ifdef TEST
assert(emptyServers.size() + notEmptyServers.size() == n);
#endif
int idx[n]; for(int i = 0; i < n; i++) idx[i] = i;
sort(idx, idx + n, [&](int x, int y){ //////////////////////////// 或需要修改
return this->servers[x].getTotalLeft() > this->servers[y].getTotalLeft();
// return this->servers[x].getTotalUsed() < this->servers[y].getTotalUsed();
// return this->servers[x].vms.size() < this->servers[y].vms.size();
});
int end = n; // m + (n-m)*2/3
bool canMigrate[n]; memset(canMigrate, 0, sizeof(canMigrate));
for(int i = m; i < end; i++){
if(i > m+4 && !canMigrate[i] && !canMigrate[i-1] && !canMigrate[i-2] && !canMigrate[i-3]) break;
Server& server = this->servers[idx[i]];
vector<PII>deleted; // (vm_id, node)
for(auto& vm : server.vms){
if(curMigrationNum+1 > limit) break;
int node = -1;
int toServer = n-1;
while(toServer > i && (node = this->servers[idx[toServer]].addVm2(vm.second, vm.first)) == -1){
toServer--;
}
if(node == -1){ // 无处可插
continue ;
// break;
}else{ // 可以迁移
// server.delVm(vm.first, node, false); // 不能在这里删除!!!!!
canMigrate[i] = true;
this->migrationInfo.push_back({vm.first, this->servers[idx[toServer]].id, node});
deleted.push_back({vm.first, vmToServer[vm.first].node}); // 收集delete信息,待本服务器这个vm循环退出再一起移除。
vmToServer[vm.first] = {idx[toServer], node};
this->notEmptyServers.insert(idx[toServer]);
this->emptyServers.erase(idx[toServer]);
curMigrationNum++;
}
}
for(auto& pii : deleted){
server.delVm(pii.first, pii.second);
}
if(server.vms.empty()){
this->emptyServers.insert(idx[i]);
this->notEmptyServers.erase(idx[i]);
}
if(curMigrationNum+1 > limit) break;
}
};
migrate();
migrate();
migrate();
return;
}
// 累计失败次数大于20退出
void migrate3(){
int n = this->servers.size();
int total = this->totalVm;
int limit = 3*total/100, curMigrationNum = 0;
auto migrate = [&](){
int m = this->emptyServers.size(); // 空的服务器个数,迁移的时候不考虑空服务器
#ifdef TEST
assert(emptyServers.size() + notEmptyServers.size() == n);
#endif
int idx[n]; for(int i = 0; i < n; i++) idx[i] = i;
sort(idx, idx + n, [&](int x, int y){ //////////////////////////// 或需要修改
return this->servers[x].getTotalLeft() > this->servers[y].getTotalLeft();
// return this->servers[x].getTotalUsed() < this->servers[y].getTotalUsed();
// return this->servers[x].vms.size() < this->servers[y].vms.size();
});
int end = n; // m + (n-m)*2/3
int cnt_fail = 0;
int using_chance = false;
for(int i = m; i < end; i++){
if(cnt_fail > cnt_fail_thr) break;
Server& server = this->servers[idx[i]];
vector<PII>deleted; // (vm_id, node)
for(auto& vm : server.vms){
if(curMigrationNum+1 > limit){
if(this->currentDay > T/3){
if(!this->used){
using_chance = true;
end = n;
}
}
if(!using_chance)break;
}
int node = -1;
int toServer = n-1;
while(toServer > i && (node = this->servers[idx[toServer]].addVm2(vm.second, vm.first)) == -1){
toServer--;
}
if(node == -1){ // 无处可插
cnt_fail++;
continue ;
// break;
}else{ // 可以迁移
// server.delVm(vm.first, node, false); // 不能在这里删除!!!!!
this->migrationInfo.push_back({vm.first, this->servers[idx[toServer]].id, node});
deleted.push_back({vm.first, vmToServer[vm.first].node}); // 收集delete信息,待本服务器这个vm循环退出再一起移除。
vmToServer[vm.first] = {idx[toServer], node};
this->notEmptyServers.insert(idx[toServer]);
this->emptyServers.erase(idx[toServer]);
curMigrationNum++;
}
}
for(auto& pii : deleted){
server.delVm(pii.first, pii.second);
}
if(server.vms.empty()){
this->emptyServers.insert(idx[i]);
this->notEmptyServers.erase(idx[i]);
}
if(curMigrationNum+1 > limit && !using_chance) break;
}
if(using_chance){
this->used = true;
}
};
migrate();
migrate();
migrate();
return;
}
void migrate4(){
int n = this->servers.size();
int total = this->totalVm;
int limit = 3*total/100, curMigrationNum = 0;
auto migrate = [&](){
int m = this->emptyServers.size(); // 空的服务器个数,迁移的时候不考虑空服务器
#ifdef TEST
assert(emptyServers.size() + notEmptyServers.size() == n);
#endif
int idx[n]; for(int i = 0; i < n; i++) idx[i] = i;
sort(idx, idx + n, [&](int x, int y){ //////////////////////////// 或需要修改
return this->servers[x].getTotalLeft() > this->servers[y].getTotalLeft();
// return this->servers[x].getTotalUsed() < this->servers[y].getTotalUsed();
// return this->servers[x].vms.size() < this->servers[y].vms.size();
});
int end = n; // m + (n-m)*2/3
int cnt_fail = 0;
int using_chance = false;
for(int i = m; i < end; i++){
if(cnt_fail > cnt_fail_thr) break;
Server& server = this->servers[idx[i]];
vector<PII>deleted; // (vm_id, node)
for(auto& vm : server.vms){
if(curMigrationNum+1 > limit){
if(this->currentDay > T/3 && this->delNumInLastDay >= this->delNumInLastDay_max){
if(!this->used){
using_chance = true;
end = n;
}
}
if(!using_chance)break;
}
int node = -1;
int toServer = n-1;
while(toServer > i && (node = this->servers[idx[toServer]].addVm2(vm.second, vm.first)) == -1){
toServer--;
}
if(node == -1){ // 无处可插
cnt_fail++;
continue ;
// break;
}else{ // 可以迁移
// server.delVm(vm.first, node, false); // 不能在这里删除!!!!!
this->migrationInfo.push_back({vm.first, this->servers[idx[toServer]].id, node});
deleted.push_back({vm.first, vmToServer[vm.first].node}); // 收集delete信息,待本服务器这个vm循环退出再一起移除。
vmToServer[vm.first] = {idx[toServer], node};
this->notEmptyServers.insert(idx[toServer]);
this->emptyServers.erase(idx[toServer]);
curMigrationNum++;
}
}
for(auto& pii : deleted){
server.delVm(pii.first, pii.second);
}
if(server.vms.empty()){
this->emptyServers.insert(idx[i]);
this->notEmptyServers.erase(idx[i]);
}
if(curMigrationNum+1 > limit && !using_chance) break;
}
if(using_chance){
this->used = true;
}
};
migrate();
migrate();
migrate();
return;
}
int bestFit(string model, int id, PII& res){
VirtualMachineInfo vm = vmDict[model];
int idx1 = -1, idx2 = -1;
PII minRes1 = {-1, INF}, minRes2 = {-1, INF};
int n = this->servers.size();
for(int i = 0; i < n; i++){
Server& server = this->servers[i];
PII res;
int ok = server.getCost(vm, res);
if(!ok) continue;
if(!server.vms.empty() && res.second < minRes1.second){
minRes1 = res;
idx1 = i;
}else if(server.vms.empty() && res.second < minRes2.second){
minRes2 = res;
idx2 = i;
}
}
if(idx1 != -1) {
res = minRes1; return idx1;
}else if(idx2 != -1){
this->emptyServers.erase(idx2);
this->notEmptyServers.insert(idx2);
res = minRes2; return idx2;
}
return -1;
}
// 使用了新设的 空服务器集合 和 非空服务器集合
int bestFit2(string model, int id, PII& res){
VirtualMachineInfo vm = vmDict[model];
int idx = -1; PII minRes = {-1, INF};
for(auto& i : this->notEmptyServers){ // 先在非空服务器里找