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-rw-r--r--src/mem/physical.cc68
-rw-r--r--src/mem/physical.hh29
2 files changed, 96 insertions, 1 deletions
diff --git a/src/mem/physical.cc b/src/mem/physical.cc
index 8b319940b..a63f6e619 100644
--- a/src/mem/physical.cc
+++ b/src/mem/physical.cc
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010 ARM Limited
+ * Copyright (c) 2010-2011 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
@@ -126,6 +126,65 @@ PhysicalMemory::~PhysicalMemory()
munmap((char*)pmemAddr, size());
}
+void
+PhysicalMemory::regStats()
+{
+ using namespace Stats;
+
+ bytesRead
+ .name(name() + ".bytes_read")
+ .desc("Number of bytes read from this memory")
+ ;
+ bytesInstRead
+ .name(name() + ".bytes_inst_read")
+ .desc("Number of instructions bytes read from this memory")
+ ;
+ bytesWritten
+ .name(name() + ".bytes_written")
+ .desc("Number of bytes written to this memory")
+ ;
+ numReads
+ .name(name() + ".num_reads")
+ .desc("Number of read requests responded to by this memory")
+ ;
+ numWrites
+ .name(name() + ".num_writes")
+ .desc("Number of write requests responded to by this memory")
+ ;
+ numOther
+ .name(name() + ".num_other")
+ .desc("Number of other requests responded to by this memory")
+ ;
+ bwRead
+ .name(name() + ".bw_read")
+ .desc("Total read bandwidth from this memory (bytes/s)")
+ .precision(0)
+ .prereq(bytesRead)
+ ;
+ bwInstRead
+ .name(name() + ".bw_inst_read")
+ .desc("Instruction read bandwidth from this memory (bytes/s)")
+ .precision(0)
+ .prereq(bytesInstRead)
+ ;
+ bwWrite
+ .name(name() + ".bw_write")
+ .desc("Write bandwidth from this memory (bytes/s)")
+ .precision(0)
+ .prereq(bytesWritten)
+ ;
+ bwTotal
+ .name(name() + ".bw_total")
+ .desc("Total bandwidth to/from this memory (bytes/s)")
+ .precision(0)
+ .prereq(bwTotal)
+ ;
+ bwRead = bytesRead / simSeconds;
+ bwInstRead = bytesInstRead / simSeconds;
+ bwWrite = bytesWritten / simSeconds;
+ bwTotal = (bytesRead + bytesWritten) / simSeconds;
+}
+
unsigned
PhysicalMemory::deviceBlockSize() const
{
@@ -304,6 +363,7 @@ PhysicalMemory::doAtomicAccess(PacketPtr pkt)
assert(!pkt->req->isInstFetch());
TRACE_PACKET("Read/Write");
+ numOther++;
} else if (pkt->isRead()) {
assert(!pkt->isWrite());
if (pkt->isLLSC()) {
@@ -312,12 +372,18 @@ PhysicalMemory::doAtomicAccess(PacketPtr pkt)
if (pmemAddr)
memcpy(pkt->getPtr<uint8_t>(), hostAddr, pkt->getSize());
TRACE_PACKET(pkt->req->isInstFetch() ? "IFetch" : "Read");
+ numReads++;
+ bytesRead += pkt->getSize();
+ if (pkt->req->isInstFetch())
+ bytesInstRead += pkt->getSize();
} else if (pkt->isWrite()) {
if (writeOK(pkt)) {
if (pmemAddr)
memcpy(hostAddr, pkt->getPtr<uint8_t>(), pkt->getSize());
assert(!pkt->req->isInstFetch());
TRACE_PACKET("Write");
+ numWrites++;
+ bytesWritten += pkt->getSize();
}
} else if (pkt->isInvalidate()) {
//upgrade or invalidate
diff --git a/src/mem/physical.hh b/src/mem/physical.hh
index 1e00d8f5b..b447237c7 100644
--- a/src/mem/physical.hh
+++ b/src/mem/physical.hh
@@ -38,11 +38,13 @@
#include <string>
#include "base/range.hh"
+#include "base/statistics.hh"
#include "mem/mem_object.hh"
#include "mem/packet.hh"
#include "mem/tport.hh"
#include "params/PhysicalMemory.hh"
#include "sim/eventq.hh"
+#include "sim/stats.hh"
//
// Functional model for a contiguous block of physical memory. (i.e. RAM)
@@ -154,6 +156,28 @@ class PhysicalMemory : public MemObject
uint64_t _size;
uint64_t _start;
+
+ /** Number of total bytes read from this memory */
+ Stats::Scalar bytesRead;
+ /** Number of instruction bytes read from this memory */
+ Stats::Scalar bytesInstRead;
+ /** Number of bytes written to this memory */
+ Stats::Scalar bytesWritten;
+ /** Number of read requests */
+ Stats::Scalar numReads;
+ /** Number of write requests */
+ Stats::Scalar numWrites;
+ /** Number of other requests */
+ Stats::Scalar numOther;
+ /** Read bandwidth from this memory */
+ Stats::Formula bwRead;
+ /** Read bandwidth from this memory */
+ Stats::Formula bwInstRead;
+ /** Write bandwidth from this memory */
+ Stats::Formula bwWrite;
+ /** Total bandwidth from this memory */
+ Stats::Formula bwTotal;
+
public:
uint64_t size() { return _size; }
uint64_t start() { return _start; }
@@ -182,6 +206,11 @@ class PhysicalMemory : public MemObject
virtual Tick calculateLatency(PacketPtr pkt);
public:
+ /**
+ * Register Statistics
+ */
+ void regStats();
+
virtual void serialize(std::ostream &os);
virtual void unserialize(Checkpoint *cp, const std::string &section);