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authorDerek Hower <drh5@cs.wisc.edu>2009-11-18 11:55:30 -0600
committerDerek Hower <drh5@cs.wisc.edu>2009-11-18 11:55:30 -0600
commit9ef5e72917c8417c81ce863160cded94d7deb1de (patch)
tree460c2b4dcdde237afed5b25d827624a3acf0af1e /src/mem/ruby/system/Sequencer.cc
parentd11dd6ed2cd1b4e124000beb2317008031a732a2 (diff)
downloadgem5-9ef5e72917c8417c81ce863160cded94d7deb1de.tar.xz
ruby: added sequencer stats to track what requests are waiting on
Diffstat (limited to 'src/mem/ruby/system/Sequencer.cc')
-rw-r--r--src/mem/ruby/system/Sequencer.cc40
1 files changed, 34 insertions, 6 deletions
diff --git a/src/mem/ruby/system/Sequencer.cc b/src/mem/ruby/system/Sequencer.cc
index 3e0997708..a8b4b075a 100644
--- a/src/mem/ruby/system/Sequencer.cc
+++ b/src/mem/ruby/system/Sequencer.cc
@@ -49,6 +49,10 @@ long int already = 0;
Sequencer::Sequencer(const string & name)
:RubyPort(name)
{
+ m_store_waiting_on_load_cycles = 0;
+ m_store_waiting_on_store_cycles = 0;
+ m_load_waiting_on_store_cycles = 0;
+ m_load_waiting_on_load_cycles = 0;
}
void Sequencer::init(const vector<string> & argv)
@@ -143,6 +147,14 @@ void Sequencer::wakeup() {
}
}
+void Sequencer::printStats(ostream & out) const {
+ out << "Sequencer: " << m_name << endl;
+ out << " store_waiting_on_load_cycles: " << m_store_waiting_on_load_cycles << endl;
+ out << " store_waiting_on_store_cycles: " << m_store_waiting_on_store_cycles << endl;
+ out << " load_waiting_on_load_cycles: " << m_load_waiting_on_load_cycles << endl;
+ out << " load_waiting_on_store_cycles: " << m_load_waiting_on_store_cycles << endl;
+}
+
void Sequencer::printProgress(ostream& out) const{
/*
int total_demand = 0;
@@ -354,8 +366,24 @@ void Sequencer::hitCallback(SequencerRequest* srequest, DataBlock& data) {
// Returns true if the sequencer already has a load or store outstanding
int Sequencer::isReady(const RubyRequest& request) {
- if( m_writeRequestTable.exist(line_address(Address(request.paddr))) ||
- m_readRequestTable.exist(line_address(Address(request.paddr))) ){
+ bool is_outstanding_store = m_writeRequestTable.exist(line_address(Address(request.paddr)));
+ bool is_outstanding_load = m_readRequestTable.exist(line_address(Address(request.paddr)));
+ if ( is_outstanding_store ) {
+ if ((request.type == RubyRequestType_LD) ||
+ (request.type == RubyRequestType_IFETCH) ||
+ (request.type == RubyRequestType_RMW_Read)) {
+ m_store_waiting_on_load_cycles++;
+ } else {
+ m_store_waiting_on_store_cycles++;
+ }
+ return LIBRUBY_ALIASED_REQUEST;
+ } else if ( is_outstanding_load ) {
+ if ((request.type == RubyRequestType_ST) ||
+ (request.type == RubyRequestType_RMW_Write) ) {
+ m_load_waiting_on_store_cycles++;
+ } else {
+ m_load_waiting_on_load_cycles++;
+ }
return LIBRUBY_ALIASED_REQUEST;
}
@@ -392,14 +420,14 @@ int64_t Sequencer::makeRequest(const RubyRequest & request)
}
issueRequest(request);
- // TODO: issue hardware prefetches here
- return id;
+ // TODO: issue hardware prefetches here
+ return id;
}
else {
assert(0);
+ return 0;
}
- }
- else {
+ } else {
return ready;
}
}