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ruby: Recycle latency fix for hammer

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Patch allows each individual message buffer to have different recycle latencies
and allows the overall recycle latency to be specified at the cmd line. The
patch also adds profiling info to make sure no one processor's requests are
recycled too much.
This commit is contained in:
Brad Beckmann
2010-08-20 11:46:14 -07:00
parent f57053473a
commit af6b97e3ee
6 changed files with 45 additions and 23 deletions
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40
src/mem/protocol/MOESI_hammer-dir.sm
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@@ -52,7 +52,7 @@ machine(Directory, "AMD Hammer-like protocol")
MessageBuffer unblockToDir, network="From", virtual_network="5", ordered="false";
MessageBuffer responseToDir, network="From", virtual_network="4", ordered="false";
MessageBuffer requestToDir, network="From", virtual_network="2", ordered="false";
MessageBuffer requestToDir, network="From", virtual_network="2", ordered="false", recycle_latency="1";
MessageBuffer dmaRequestToDir, network="From", virtual_network="0", ordered="true";
// STATES
@@ -309,6 +309,22 @@ machine(Directory, "AMD Hammer-like protocol")
}
}
// off-chip memory request/response is done
in_port(memQueue_in, MemoryMsg, memBuffer) {
if (memQueue_in.isReady()) {
peek(memQueue_in, MemoryMsg) {
if (in_msg.Type == MemoryRequestType:MEMORY_READ) {
trigger(Event:Memory_Data, in_msg.Address);
} else if (in_msg.Type == MemoryRequestType:MEMORY_WB) {
trigger(Event:Memory_Ack, in_msg.Address);
} else {
DEBUG_EXPR(in_msg.Type);
error("Invalid message");
}
}
}
}
in_port(requestQueue_in, RequestMsg, requestToDir) {
if (requestQueue_in.isReady()) {
peek(requestQueue_in, RequestMsg) {
@@ -333,22 +349,6 @@ machine(Directory, "AMD Hammer-like protocol")
}
}
// off-chip memory request/response is done
in_port(memQueue_in, MemoryMsg, memBuffer) {
if (memQueue_in.isReady()) {
peek(memQueue_in, MemoryMsg) {
if (in_msg.Type == MemoryRequestType:MEMORY_READ) {
trigger(Event:Memory_Data, in_msg.Address);
} else if (in_msg.Type == MemoryRequestType:MEMORY_WB) {
trigger(Event:Memory_Ack, in_msg.Address);
} else {
DEBUG_EXPR(in_msg.Type);
error("Invalid message");
}
}
}
}
// Actions
action(r_setMRU, "\rr", desc="manually set the MRU bit for pf entry" ) {
@@ -766,6 +766,9 @@ machine(Directory, "AMD Hammer-like protocol")
}
action(j_popIncomingUnblockQueue, "j", desc="Pop incoming unblock queue") {
peek(unblockNetwork_in, ResponseMsg) {
APPEND_TRANSITION_COMMENT(in_msg.Sender);
}
unblockNetwork_in.dequeue();
}
@@ -880,6 +883,9 @@ machine(Directory, "AMD Hammer-like protocol")
}
action(zz_recycleRequest, "\z", desc="Recycle the request queue") {
peek(requestQueue_in, RequestMsg) {
APPEND_TRANSITION_COMMENT(in_msg.Requestor);
}
requestQueue_in.recycle();
}