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-rw-r--r--src/mem/ruby/system/Sequencer.cc183
1 files changed, 121 insertions, 62 deletions
diff --git a/src/mem/ruby/system/Sequencer.cc b/src/mem/ruby/system/Sequencer.cc
index 606dff0ab..8e61766b8 100644
--- a/src/mem/ruby/system/Sequencer.cc
+++ b/src/mem/ruby/system/Sequencer.cc
@@ -136,6 +136,61 @@ Sequencer::wakeup()
void Sequencer::clearStats()
{
m_outstandReqHist.clear();
+
+ // Initialize the histograms that track latency of all requests
+ m_latencyHist.clear(20);
+ m_typeLatencyHist.resize(RubyRequestType_NUM);
+ for (int i = 0; i < RubyRequestType_NUM; i++) {
+ m_typeLatencyHist[i].clear(20);
+ }
+
+ // Initialize the histograms that track latency of requests that
+ // hit in the cache attached to the sequencer.
+ m_hitLatencyHist.clear(20);
+ m_hitTypeLatencyHist.resize(RubyRequestType_NUM);
+ m_hitTypeMachLatencyHist.resize(RubyRequestType_NUM);
+
+ for (int i = 0; i < RubyRequestType_NUM; i++) {
+ m_hitTypeLatencyHist[i].clear(20);
+ m_hitTypeMachLatencyHist[i].resize(MachineType_NUM);
+ for (int j = 0; j < MachineType_NUM; j++) {
+ m_hitTypeMachLatencyHist[i][j].clear(20);
+ }
+ }
+
+ // Initialize the histograms that track the latency of requests that
+ // missed in the cache attached to the sequencer.
+ m_missLatencyHist.clear(20);
+ m_missTypeLatencyHist.resize(RubyRequestType_NUM);
+ m_missTypeMachLatencyHist.resize(RubyRequestType_NUM);
+
+ for (int i = 0; i < RubyRequestType_NUM; i++) {
+ m_missTypeLatencyHist[i].clear(20);
+ m_missTypeMachLatencyHist[i].resize(MachineType_NUM);
+ for (int j = 0; j < MachineType_NUM; j++) {
+ m_missTypeMachLatencyHist[i][j].clear(20);
+ }
+ }
+
+ m_hitMachLatencyHist.resize(MachineType_NUM);
+ m_missMachLatencyHist.resize(MachineType_NUM);
+ m_IssueToInitialDelayHist.resize(MachineType_NUM);
+ m_InitialToForwardDelayHist.resize(MachineType_NUM);
+ m_ForwardToFirstResponseDelayHist.resize(MachineType_NUM);
+ m_FirstResponseToCompletionDelayHist.resize(MachineType_NUM);
+ m_IncompleteTimes.resize(MachineType_NUM);
+
+ for (int i = 0; i < MachineType_NUM; i++) {
+ m_missMachLatencyHist[i].clear(20);
+ m_hitMachLatencyHist[i].clear(20);
+
+ m_IssueToInitialDelayHist[i].clear(20);
+ m_InitialToForwardDelayHist[i].clear(20);
+ m_ForwardToFirstResponseDelayHist[i].clear(20);
+ m_FirstResponseToCompletionDelayHist[i].clear(20);
+
+ m_IncompleteTimes[i] = 0;
+ }
}
void
@@ -370,26 +425,58 @@ Sequencer::handleLlsc(const Address& address, SequencerRequest* request)
}
void
-Sequencer::writeCallback(const Address& address, DataBlock& data)
+Sequencer::recordMissLatency(const Cycles cycles, const RubyRequestType type,
+ const MachineType respondingMach,
+ bool isExternalHit, Cycles issuedTime,
+ Cycles initialRequestTime,
+ Cycles forwardRequestTime,
+ Cycles firstResponseTime, Cycles completionTime)
{
- writeCallback(address, GenericMachineType_NULL, data);
-}
+ m_latencyHist.add(cycles);
+ m_typeLatencyHist[type].add(cycles);
+
+ if (isExternalHit) {
+ m_missLatencyHist.add(cycles);
+ m_missTypeLatencyHist[type].add(cycles);
+
+ if (respondingMach != MachineType_NUM) {
+ m_missMachLatencyHist[respondingMach].add(cycles);
+ m_missTypeMachLatencyHist[type][respondingMach].add(cycles);
+
+ if ((issuedTime <= initialRequestTime) &&
+ (initialRequestTime <= forwardRequestTime) &&
+ (forwardRequestTime <= firstResponseTime) &&
+ (firstResponseTime <= completionTime)) {
+
+ m_IssueToInitialDelayHist[respondingMach].add(
+ initialRequestTime - issuedTime);
+ m_InitialToForwardDelayHist[respondingMach].add(
+ forwardRequestTime - initialRequestTime);
+ m_ForwardToFirstResponseDelayHist[respondingMach].add(
+ firstResponseTime - forwardRequestTime);
+ m_FirstResponseToCompletionDelayHist[respondingMach].add(
+ completionTime - firstResponseTime);
+ } else {
+ m_IncompleteTimes[respondingMach]++;
+ }
+ }
+ } else {
+ m_hitLatencyHist.add(cycles);
+ m_hitTypeLatencyHist[type].add(cycles);
-void
-Sequencer::writeCallback(const Address& address,
- GenericMachineType mach,
- DataBlock& data)
-{
- writeCallback(address, mach, data, Cycles(0), Cycles(0), Cycles(0));
+ if (respondingMach != MachineType_NUM) {
+ m_hitMachLatencyHist[respondingMach].add(cycles);
+ m_hitTypeMachLatencyHist[type][respondingMach].add(cycles);
+ }
+ }
}
void
-Sequencer::writeCallback(const Address& address,
- GenericMachineType mach,
- DataBlock& data,
- Cycles initialRequestTime,
- Cycles forwardRequestTime,
- Cycles firstResponseTime)
+Sequencer::writeCallback(const Address& address, DataBlock& data,
+ const bool externalHit, const MachineType mach,
+ const Cycles initialRequestTime,
+ const Cycles forwardRequestTime,
+ const Cycles firstResponseTime)
{
assert(address == line_address(address));
assert(m_writeRequestTable.count(line_address(address)));
@@ -427,28 +514,13 @@ Sequencer::writeCallback(const Address& address,
m_controller->unblock(address);
}
- hitCallback(request, mach, data, success,
+ hitCallback(request, data, success, mach, externalHit,
initialRequestTime, forwardRequestTime, firstResponseTime);
}
void
-Sequencer::readCallback(const Address& address, DataBlock& data)
-{
- readCallback(address, GenericMachineType_NULL, data);
-}
-
-void
-Sequencer::readCallback(const Address& address,
- GenericMachineType mach,
- DataBlock& data)
-{
- readCallback(address, mach, data, Cycles(0), Cycles(0), Cycles(0));
-}
-
-void
-Sequencer::readCallback(const Address& address,
- GenericMachineType mach,
- DataBlock& data,
+Sequencer::readCallback(const Address& address, DataBlock& data,
+ bool externalHit, const MachineType mach,
Cycles initialRequestTime,
Cycles forwardRequestTime,
Cycles firstResponseTime)
@@ -466,18 +538,17 @@ Sequencer::readCallback(const Address& address,
assert((request->m_type == RubyRequestType_LD) ||
(request->m_type == RubyRequestType_IFETCH));
- hitCallback(request, mach, data, true,
+ hitCallback(request, data, true, mach, externalHit,
initialRequestTime, forwardRequestTime, firstResponseTime);
}
void
-Sequencer::hitCallback(SequencerRequest* srequest,
- GenericMachineType mach,
- DataBlock& data,
- bool success,
- Cycles initialRequestTime,
- Cycles forwardRequestTime,
- Cycles firstResponseTime)
+Sequencer::hitCallback(SequencerRequest* srequest, DataBlock& data,
+ bool llscSuccess,
+ const MachineType mach, const bool externalHit,
+ const Cycles initialRequestTime,
+ const Cycles forwardRequestTime,
+ const Cycles firstResponseTime)
{
PacketPtr pkt = srequest->pkt;
Address request_address(pkt->getAddr());
@@ -494,29 +565,17 @@ Sequencer::hitCallback(SequencerRequest* srequest,
}
assert(curCycle() >= issued_time);
- Cycles miss_latency = curCycle() - issued_time;
-
- // Profile the miss latency for all non-zero demand misses
- if (miss_latency != 0) {
- g_system_ptr->getProfiler()->missLatency(miss_latency, type, mach);
+ Cycles total_latency = curCycle() - issued_time;
- if (mach == GenericMachineType_L1Cache_wCC) {
- g_system_ptr->getProfiler()->missLatencyWcc(issued_time,
- initialRequestTime, forwardRequestTime,
- firstResponseTime, curCycle());
- }
-
- if (mach == GenericMachineType_Directory) {
- g_system_ptr->getProfiler()->missLatencyDir(issued_time,
- initialRequestTime, forwardRequestTime,
- firstResponseTime, curCycle());
- }
+ // Profile the latency for all demand accesses.
+ recordMissLatency(total_latency, type, mach, externalHit, issued_time,
+ initialRequestTime, forwardRequestTime,
+ firstResponseTime, curCycle());
- DPRINTFR(ProtocolTrace, "%15s %3s %10s%20s %6s>%-6s %s %d cycles\n",
- curTick(), m_version, "Seq",
- success ? "Done" : "SC_Failed", "", "",
- request_address, miss_latency);
- }
+ DPRINTFR(ProtocolTrace, "%15s %3s %10s%20s %6s>%-6s %s %d cycles\n",
+ curTick(), m_version, "Seq",
+ llscSuccess ? "Done" : "SC_Failed", "", "",
+ request_address, total_latency);
// update the data
if (g_system_ptr->m_warmup_enabled) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-20 14:19:05 +0000