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mem: Add snoop traffic statistic

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This commit is contained in:
David Guillen Fandos 2016-07-21 17:19:14 +01:00
parent 86a25bbcee
commit 0020662459
2 changed files with 14 additions and 1 deletions
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14
src/mem/coherent_xbar.cc
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@ -317,8 +317,10 @@ CoherentXBar::recvTimingReq(PacketPtr pkt, PortID slave_port_id)
pktSize[slave_port_id][master_port_id] += pkt_size;
transDist[pkt_cmd]++;
if (is_express_snoop)
if (is_express_snoop) {
snoops++;
snoopTraffic += pkt_size;
}
}
if (sink_packet)
@ -415,8 +417,10 @@ CoherentXBar::recvTimingSnoopReq(PacketPtr pkt, PortID master_port_id)
pkt->getAddr());
// update stats here as we know the forwarding will succeed
unsigned int pkt_size = pkt->hasData() ? pkt->getSize() : 0;
transDist[pkt->cmdToIndex()]++;
snoops++;
snoopTraffic += pkt_size;
// we should only see express snoops from caches
assert(pkt->isExpressSnoop());
@ -588,6 +592,7 @@ CoherentXBar::recvTimingSnoopResp(PacketPtr pkt, PortID slave_port_id)
// stats updates
transDist[pkt_cmd]++;
snoops++;
snoopTraffic += pkt_size;
return true;
}
@ -739,7 +744,9 @@ CoherentXBar::recvAtomicSnoop(PacketPtr pkt, PortID master_port_id)
pkt->cmdString());
// add the request snoop data
unsigned int pkt_size = pkt->hasData() ? pkt->getSize() : 0;
snoops++;
snoopTraffic += pkt_size;
// forward to all snoopers
std::pair<MemCmd, Tick> snoop_result;
@ -965,6 +972,11 @@ CoherentXBar::regStats()
.desc("Total snoops (count)")
;
snoopTraffic
.name(name() + ".snoopTraffic")
.desc("Total snoop traffic (bytes)")
;
snoopFanout
.init(0, snoopPorts.size(), 1)
.name(name() + ".snoop_fanout")

1
src/mem/coherent_xbar.hh
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@ -394,6 +394,7 @@ class CoherentXBar : public BaseXBar
bool sinkPacket(const PacketPtr pkt) const;
Stats::Scalar snoops;
Stats::Scalar snoopTraffic;
Stats::Distribution snoopFanout;
public: