#include "gtnets_topology.h"
#include <map>
#include <vector>
+#ifdef DEBUG0
+ #undef DEBUG0
+#endif
+#include "xbt/log.h"
+#include "xbt/asserts.h"
+#include "RngStream.h"
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_gtnets_simulator, surf_network_gtnets,
+ "Logging specific to the SURF network GTNetS simulator");
+
using namespace std;
void static tcp_sent_callback(void* action, double completion_time);
+
// Constructor.
// TODO: check the default values.
-GTSim::GTSim(){
- int wsize = 20000;
+GTSim::GTSim(int WindowSize){
+ int wsize = WindowSize;
is_topology_ = 0;
nflow_ = 0;
+ jitter_ = 0;
+ jitter_seed_ = 10;
+
+ // EXTRACTED FROM GTNETS SOURCE CODE COMMENTS
+ // REDQueue::REDQueue(
+ // DCount_t in_w_q, Count_t in_min_th, Count_t in_max_th,
+ // Count_t in_limit, DCount_t in_max_p, Count_t in_mean_pktsize) : iface(nil)
+ // Set default values.
+ //Doc:Desc This constructor the critical RED parameters and builds a
+ //Doc:Desc correspoding RED queue
+ //Doc:Arg1 weight of the queue
+ //Doc:Arg2 minimum threshold
+ //Doc:Arg3 maximum threshold
+ //Doc:Arg4 Limit/max size for the queue
+ //Doc:Arg5 maximum value for mark/drop probability
+ //Doc:Arg6 Average packet size
+
+ //Default Parameters
+ //REDQueue *default_red_queue_ = new REDQueue(0.002, 2500, 7500, 30000, 0.10, 500);
+ //Same as above
+ //REDQueue *default_red_queue_ = new REDQueue();
+
+ //See for details of how those values are calucated below
+ //[1] Sally Floyd and Van Jacobson, "Random Early Detection Gateways with Congestion Avoidance",
+ // IEEE/ACM Transactions on Networking, vol. 1, n. 4, august 1993.
+ //
+ //[2] Kostas Pentikousis, "Active Queue Management", ACM Crossroads, vol. 7, n. 5,
+ // mid-summer 2001
+ //
+ //[3] Stefann De Cnodder, Omar Ecoumi, Kenny Paulwels, "RED behavior with different packet sizes",
+ // 5th IEEE Symposium on Computers and Communication, (ISCC 2000)
+ //
+ //[4] http://www.opalsoft.net/qos/DS-26.htm
+ //
+ //short explanation:
+ // q_weight = fixed to 0.002 in most literature
+ // min_bytes = max / 3 = 16,666,666
+ // max_bytes = mean_bw * max_tolerable_latency, set to 1e8 * 0.5 = 50,000,000
+ // limit_bytes = 8 * max = 400,000,000
+ // prob = follow most literature 0.02
+ // avgpkt = fixed to the same TCP segment size, 1000 Bytes
+ //
+ // burst = (2*(min+max))/(3*avgpkt) ***DON'T USED BY GTNetS***
+ REDQueue *default_red_queue_ = new REDQueue(0.002, 16666666, 50000000, 400000000, 0.02, 1000);
+
+ Queue::Default(*default_red_queue_);
+ delete default_red_queue_;
+
+ TCP::DefaultAdvWin(wsize);
+ TCP::DefaultSegSize(1000);
+ TCP::DefaultTxBuffer(128000);
+ TCP::DefaultRxBuffer(128000);
+
sim_ = new Simulator();
+ sim_->verbose=false;
topo_ = new GTNETS_Topology();
- sim_->verbose=false;
+ // Manual routing
+ rm_ = new RoutingManual();
+ Routing::SetRouting(rm_);
+}
+
+// Constructor.
+// TODO: check the default values.
+GTSim::GTSim(){
+ int wsize = 20000;
+ is_topology_ = 0;
+ nflow_ = 0;
+ jitter_ = 0;
+ jitter_seed_ = 10;
+
+ // EXTRACTED FROM GTNETS SOURCE CODE COMMENTS
+ // REDQueue::REDQueue(
+ // DCount_t in_w_q, Count_t in_min_th, Count_t in_max_th,
+ // Count_t in_limit, DCount_t in_max_p, Count_t in_mean_pktsize) : iface(nil)
// Set default values.
+ //Doc:Desc This constructor the critical RED parameters and builds a
+ //Doc:Desc correspoding RED queue
+ //Doc:Arg1 weight of the queue
+ //Doc:Arg2 minimum threshold
+ //Doc:Arg3 maximum threshold
+ //Doc:Arg4 Limit/max size for the queue
+ //Doc:Arg5 maximum value for mark/drop probability
+ //Doc:Arg6 Average packet size
+
+ //Default Parameters
+ //REDQueue *default_red_queue_ = new REDQueue(0.002, 2500, 7500, 30000, 0.10, 500);
+ //Same as above
+ //REDQueue *default_red_queue_ = new REDQueue();
+
+ //See for details of how those values are calucated below
+ //[1] Sally Floyd and Van Jacobson, "Random Early Detection Gateways with Congestion Avoidance",
+ // IEEE/ACM Transactions on Networking, vol. 1, n. 4, august 1993.
+ //
+ //[2] Kostas Pentikousis, "Active Queue Management", ACM Crossroads, vol. 7, n. 5,
+ // mid-summer 2001
+ //
+ //[3] Stefann De Cnodder, Omar Ecoumi, Kenny Paulwels, "RED behavior with different packet sizes",
+ // 5th IEEE Symposium on Computers and Communication, (ISCC 2000)
+ //
+ //[4] http://www.opalsoft.net/qos/DS-26.htm
+ //
+ //short explanation:
+ // q_weight = fixed to 0.002 in most literature
+ // min_bytes = max / 3 = 16,666,666
+ // max_bytes = mean_bw * max_tolerable_latency, set to 1e8 * 0.5 = 50,000,000
+ // limit_bytes = 8 * max = 400,000,000
+ // prob = follow most literature 0.02
+ // avgpkt = fixed to the same TCP segment size, 1000 Bytes
+ //
+ // burst = (2*(min+max))/(3*avgpkt) ***DON'T USED BY GTNetS***
+ REDQueue *default_red_queue_ = new REDQueue(0.002, 16666666, 50000000, 400000000, 0.02, 1000);
+
+ Queue::Default(*default_red_queue_);
+ delete default_red_queue_;
+
TCP::DefaultAdvWin(wsize);
TCP::DefaultSegSize(1000);
TCP::DefaultTxBuffer(128000);
TCP::DefaultRxBuffer(128000);
+ sim_ = new Simulator();
+ sim_->verbose=false;
+ topo_ = new GTNETS_Topology();
+
// Manual routing
rm_ = new RoutingManual();
Routing::SetRouting(rm_);
while (!gtnets_links_.empty())
gtnets_links_.erase(gtnets_links_.begin());
+ map<int, Uniform*>::iterator it2;
+ for (it2 = uniform_jitter_generator_.begin(); it2 != uniform_jitter_generator_.end(); it2++){
+ delete it2->second;
+ }
+ while (!uniform_jitter_generator_.empty())
+ uniform_jitter_generator_.erase(uniform_jitter_generator_.begin());
+
map<int, Node*>::iterator it3;
for (it3 = gtnets_nodes_.begin(); it3 != gtnets_nodes_.end(); it3++){
delete it3->second;
}
int GTSim::add_router(int id){
- if (topo_->add_router(id) < 0){
- fprintf(stderr, "can't add router %d. already exists.\n", id);
- return -1;
- }
+ xbt_assert1(!(topo_->add_router(id) < 0), "can't add router %d. already exists", id);
}
//bandwidth: in bytes.
//latency: in seconds.
int GTSim::add_link(int id, double bandwidth, double latency){
double bw = bandwidth * 8; //Bandwidth in bits (used in GTNETS).
- if (topo_->add_link(id) < 0){
- fprintf(stderr, "can't add link %d. already exists.\n", id);
- return -1;
- }
+ xbt_assert1(!(topo_->add_link(id) < 0),"Can't add link %d. already exists", id);
+ DEBUG3("Creating a new P2P, linkid %d, bandwidth %gl, latency %gl", id, bandwidth, latency);
gtnets_links_[id] = new Linkp2p(bw, latency);
+ if(jitter_ > 0){
+ DEBUG2("Using jitter %f, and seed %u", jitter_, jitter_seed_);
+ double min = -1*jitter_*latency;
+ double max = jitter_*latency;
+ uniform_jitter_generator_[id] = new Uniform(min,max);
+ gtnets_links_[id]->Jitter((const Random &) *(uniform_jitter_generator_[id]));
+ }
return 0;
}
}
int GTSim::add_onehop_route(int src, int dst, int link){
- if (topo_->add_onehop_route(src, dst, link) < 0){
- fprintf(stderr, "Cannot add a route, src: %d, dst: %d, link: %d\n",
- src, dst, link);
- return -1;
- }
+ xbt_assert3(!(topo_->add_onehop_route(src, dst, link) < 0), "Cannot add a route, src: %d, dst: %d, link: %d", src, dst, link);
return 0;
}
// Generate the gtnets nodes according to topo_.
void GTSim::add_nodes(){
static unsigned int address = IPAddr("192.168.0.1");
+ IPAddr helper = IPAddr();
vector<GTNETS_Node*> nodes = topo_->nodes();
vector<GTNETS_Node*>::iterator it;
int id;
id = (*it)->id();
gtnets_nodes_[id] = new Node();
gtnets_nodes_[id]->SetIPAddr(address++);
- // printf("In GTSim, add_node: %d\n", id);
+ DEBUG2("In GTSim, add_node: %d, with IPAddr %s", id, helper.ToDotted(address-1));
+
}
}
gtnets_nodes_[srcid]->
AddDuplexLink(gtnets_nodes_[dstid], *(gtnets_links_[linkid]));
+ DEBUG3("Setting DuplexLink, src %d, dst %d, linkid %d", srcid, dstid, linkid);
}
}
}
node_connect();
}
+void GTSim::print_topology(){
+ topo_->print_topology();
+}
+
// Add a route that includes more than one hop. All one hop
// routes must have been added. When this function is called
// for the first time, all gtnets nodes are generated.
int src_node = topo_->nodeid_from_hostid(src);
int dst_node = topo_->nodeid_from_hostid(dst);
- if (gtnets_nodes_.find(src_node) == gtnets_nodes_.end()){
- fprintf(stderr, "node %d not found\n", src_node);
- return -1;
- }
- if (gtnets_nodes_.find(dst_node) == gtnets_nodes_.end()){
- fprintf(stderr, "node %d not found\n", dst_node);
- return -1;
- }
+ xbt_assert1(!(gtnets_nodes_.find(src_node) == gtnets_nodes_.end()), "Node %d not found", src_node);
+ xbt_assert1(!(gtnets_nodes_.find(dst_node) == gtnets_nodes_.end()), "Node %d not found", dst_node);
Node* tmpsrc = gtnets_nodes_[src_node];
Node* tmpdst = gtnets_nodes_[dst_node];
cur_node = src_node;
for (int i = 0; i < nlink; i++){
- if (gtnets_nodes_.find(cur_node) == gtnets_nodes_.end()){
- fprintf(stderr, "node %d not found\n", cur_node);
- return -1;
- }
+ xbt_assert1(!(gtnets_nodes_.find(cur_node) == gtnets_nodes_.end()), "Node %d not found", cur_node);
next_node = topo_->peer_node_id(links[i], cur_node);
- if (next_node < 0){
- fprintf(stderr, "peer node not found\n");
- return -1;
- }
- if (gtnets_nodes_.find(next_node) == gtnets_nodes_.end()){
- fprintf(stderr, "node %d not found\n", next_node);
- return -1;
- }
+ xbt_assert0(!(next_node < 0), "Peer node not found");
+ xbt_assert1(!(gtnets_nodes_.find(next_node) == gtnets_nodes_.end()), "Node %d not found", next_node);
//add route
Node* tmpcur = gtnets_nodes_[cur_node];
cur_node = next_node;
}
- if (cur_node != dst_node){
- fprintf(stderr, "Route inconsistency, last: %d, dst: %d\n",
- cur_node, dst_node);
- return -1;
- }
+ xbt_assert2(!(cur_node != dst_node), "Route inconsistency, last: %d, dst: %d",cur_node, dst_node);
return 0;
}
}
int src_node = topo_->nodeid_from_hostid(src);
- if (src_node < 0){
- fprintf(stderr, "src %d not found\n");
- return -1;
- }
+ xbt_assert1(!(src_node < 0), "Src %d not found", src_node);
+
int dst_node = topo_->nodeid_from_hostid(dst);
- if (dst_node < 0){
- fprintf(stderr, "dst %d not found\n");
- return -1;
- }
+ xbt_assert1(!(dst_node < 0), "Dst %d not found", dst_node);
gtnets_servers_[nflow_] = (TCPServer*) gtnets_nodes_[dst_node]->
AddApplication(TCPServer(TCPReno()));
pipe(pfds);
t1 = 0;
-
- if ( (soon_pid=fork()) != 0){
+ fflush (NULL);
+ if( (soon_pid=fork()) != 0){
read(pfds[0], &t1, sizeof(Time_t));
waitpid(soon_pid, &status, 0);
}else{
return gtnets_servers_[flow_id]->GetTotRx();
}
+
int GTSim::run_until_next_flow_completion(void ***metadata, int *number_of_flows){
meta_flows.clear();
return 0;
}
+void GTSim::set_jitter(double d){
+ xbt_assert1(((0 <= d)&&(d <= 1)), "The jitter value must be within interval [0.0;1.0), got %f", d);
+ jitter_ = d;
+}
+
+void GTSim::set_jitter_seed(int s){
+ jitter_seed_ = s;
+
+ if(jitter_seed_ > 0.0){
+ INFO1("Setting the jitter_seed with %d", jitter_seed_ );
+ Random::GlobalSeed(jitter_seed_ , jitter_seed_ , jitter_seed_ ,jitter_seed_ ,jitter_seed_ ,jitter_seed_);
+ }
+}
void static tcp_sent_callback(void* action, double completion_time){
// Schedule the flow complete event.
