comm_monitor.cc revision 13784
18981Sandreas.hansson@arm.com/* 213573Ssascha.bischoff@arm.com * Copyright (c) 2012-2013, 2015, 2018 ARM Limited 311804Srjthakur@google.com * Copyright (c) 2016 Google Inc. 411904Spierre-yves.peneau@lirmm.fr * Copyright (c) 2017, Centre National de la Recherche Scientifique 511804Srjthakur@google.com * All rights reserved. 68981Sandreas.hansson@arm.com * 78981Sandreas.hansson@arm.com * The license below extends only to copyright in the software and shall 88981Sandreas.hansson@arm.com * not be construed as granting a license to any other intellectual 98981Sandreas.hansson@arm.com * property including but not limited to intellectual property relating 108981Sandreas.hansson@arm.com * to a hardware implementation of the functionality of the software 118981Sandreas.hansson@arm.com * licensed hereunder. You may use the software subject to the license 128981Sandreas.hansson@arm.com * terms below provided that you ensure that this notice is replicated 138981Sandreas.hansson@arm.com * unmodified and in its entirety in all distributions of the software, 148981Sandreas.hansson@arm.com * modified or unmodified, in source code or in binary form. 158981Sandreas.hansson@arm.com * 168981Sandreas.hansson@arm.com * Redistribution and use in source and binary forms, with or without 178981Sandreas.hansson@arm.com * modification, are permitted provided that the following conditions are 188981Sandreas.hansson@arm.com * met: redistributions of source code must retain the above copyright 198981Sandreas.hansson@arm.com * notice, this list of conditions and the following disclaimer; 208981Sandreas.hansson@arm.com * redistributions in binary form must reproduce the above copyright 218981Sandreas.hansson@arm.com * notice, this list of conditions and the following disclaimer in the 228981Sandreas.hansson@arm.com * documentation and/or other materials provided with the distribution; 238981Sandreas.hansson@arm.com * neither the name of the copyright holders nor the names of its 248981Sandreas.hansson@arm.com * contributors may be used to endorse or promote products derived from 258981Sandreas.hansson@arm.com * this software without specific prior written permission. 268981Sandreas.hansson@arm.com * 278981Sandreas.hansson@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 288981Sandreas.hansson@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 298981Sandreas.hansson@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 308981Sandreas.hansson@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 318981Sandreas.hansson@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 328981Sandreas.hansson@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 338981Sandreas.hansson@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 348981Sandreas.hansson@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 358981Sandreas.hansson@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 368981Sandreas.hansson@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 378981Sandreas.hansson@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 388981Sandreas.hansson@arm.com * 398981Sandreas.hansson@arm.com * Authors: Thomas Grass 408981Sandreas.hansson@arm.com * Andreas Hansson 4111804Srjthakur@google.com * Rahul Thakur 4211904Spierre-yves.peneau@lirmm.fr * Pierre-Yves Peneau 438981Sandreas.hansson@arm.com */ 448981Sandreas.hansson@arm.com 4511793Sbrandon.potter@amd.com#include "mem/comm_monitor.hh" 4611793Sbrandon.potter@amd.com 479356Snilay@cs.wisc.edu#include "base/trace.hh" 488981Sandreas.hansson@arm.com#include "debug/CommMonitor.hh" 498981Sandreas.hansson@arm.com#include "sim/stats.hh" 508981Sandreas.hansson@arm.com 518981Sandreas.hansson@arm.comCommMonitor::CommMonitor(Params* params) 528981Sandreas.hansson@arm.com : MemObject(params), 538981Sandreas.hansson@arm.com masterPort(name() + "-master", *this), 548981Sandreas.hansson@arm.com slavePort(name() + "-slave", *this), 5512084Sspwilson2@wisc.edu samplePeriodicEvent([this]{ samplePeriodic(); }, name()), 568981Sandreas.hansson@arm.com samplePeriodTicks(params->sample_period), 5710902Sandreas.sandberg@arm.com samplePeriod(params->sample_period / SimClock::Float::s), 5810902Sandreas.sandberg@arm.com stats(params) 598981Sandreas.hansson@arm.com{ 608981Sandreas.hansson@arm.com DPRINTF(CommMonitor, 6110064Sandreas.hansson@arm.com "Created monitor %s with sample period %d ticks (%f ms)\n", 6210902Sandreas.sandberg@arm.com name(), samplePeriodTicks, samplePeriod * 1E3); 638981Sandreas.hansson@arm.com} 648981Sandreas.hansson@arm.com 658981Sandreas.hansson@arm.comCommMonitor* 668981Sandreas.hansson@arm.comCommMonitorParams::create() 678981Sandreas.hansson@arm.com{ 688981Sandreas.hansson@arm.com return new CommMonitor(this); 698981Sandreas.hansson@arm.com} 708981Sandreas.hansson@arm.com 718981Sandreas.hansson@arm.comvoid 728981Sandreas.hansson@arm.comCommMonitor::init() 738981Sandreas.hansson@arm.com{ 748981Sandreas.hansson@arm.com // make sure both sides of the monitor are connected 758981Sandreas.hansson@arm.com if (!slavePort.isConnected() || !masterPort.isConnected()) 768981Sandreas.hansson@arm.com fatal("Communication monitor is not connected on both sides.\n"); 778981Sandreas.hansson@arm.com} 788981Sandreas.hansson@arm.com 7910994Sandreas.sandberg@arm.comvoid 8010994Sandreas.sandberg@arm.comCommMonitor::regProbePoints() 8110994Sandreas.sandberg@arm.com{ 8210994Sandreas.sandberg@arm.com ppPktReq.reset(new ProbePoints::Packet(getProbeManager(), "PktRequest")); 8310994Sandreas.sandberg@arm.com ppPktResp.reset(new ProbePoints::Packet(getProbeManager(), "PktResponse")); 8410994Sandreas.sandberg@arm.com} 8510994Sandreas.sandberg@arm.com 8613784Sgabeblack@google.comPort & 8713784Sgabeblack@google.comCommMonitor::getPort(const std::string &if_name, PortID idx) 888981Sandreas.hansson@arm.com{ 898981Sandreas.hansson@arm.com if (if_name == "master") { 908981Sandreas.hansson@arm.com return masterPort; 9113784Sgabeblack@google.com } else if (if_name == "slave") { 928981Sandreas.hansson@arm.com return slavePort; 938981Sandreas.hansson@arm.com } else { 9413784Sgabeblack@google.com return MemObject::getPort(if_name, idx); 958981Sandreas.hansson@arm.com } 968981Sandreas.hansson@arm.com} 978981Sandreas.hansson@arm.com 988981Sandreas.hansson@arm.comvoid 998981Sandreas.hansson@arm.comCommMonitor::recvFunctional(PacketPtr pkt) 1008981Sandreas.hansson@arm.com{ 1018981Sandreas.hansson@arm.com masterPort.sendFunctional(pkt); 1028981Sandreas.hansson@arm.com} 1038981Sandreas.hansson@arm.com 1048981Sandreas.hansson@arm.comvoid 1058981Sandreas.hansson@arm.comCommMonitor::recvFunctionalSnoop(PacketPtr pkt) 1068981Sandreas.hansson@arm.com{ 1078981Sandreas.hansson@arm.com slavePort.sendFunctionalSnoop(pkt); 1088981Sandreas.hansson@arm.com} 1098981Sandreas.hansson@arm.com 11011804Srjthakur@google.comvoid 11111804Srjthakur@google.comCommMonitor::MonitorStats::updateReqStats( 11211804Srjthakur@google.com const ProbePoints::PacketInfo& pkt_info, bool is_atomic, 11311804Srjthakur@google.com bool expects_response) 11411804Srjthakur@google.com{ 11511804Srjthakur@google.com if (pkt_info.cmd.isRead()) { 11611804Srjthakur@google.com // Increment number of observed read transactions 11711804Srjthakur@google.com if (!disableTransactionHists) 11811804Srjthakur@google.com ++readTrans; 11911804Srjthakur@google.com 12011804Srjthakur@google.com // Get sample of burst length 12111804Srjthakur@google.com if (!disableBurstLengthHists) 12211804Srjthakur@google.com readBurstLengthHist.sample(pkt_info.size); 12311804Srjthakur@google.com 12411804Srjthakur@google.com // Sample the masked address 12511804Srjthakur@google.com if (!disableAddrDists) 12611804Srjthakur@google.com readAddrDist.sample(pkt_info.addr & readAddrMask); 12711804Srjthakur@google.com 12811804Srjthakur@google.com if (!disableITTDists) { 12911804Srjthakur@google.com // Sample value of read-read inter transaction time 13011804Srjthakur@google.com if (timeOfLastRead != 0) 13111804Srjthakur@google.com ittReadRead.sample(curTick() - timeOfLastRead); 13211804Srjthakur@google.com timeOfLastRead = curTick(); 13311804Srjthakur@google.com 13411804Srjthakur@google.com // Sample value of req-req inter transaction time 13511804Srjthakur@google.com if (timeOfLastReq != 0) 13611804Srjthakur@google.com ittReqReq.sample(curTick() - timeOfLastReq); 13711804Srjthakur@google.com timeOfLastReq = curTick(); 13811804Srjthakur@google.com } 13911804Srjthakur@google.com if (!is_atomic && !disableOutstandingHists && expects_response) 14011804Srjthakur@google.com ++outstandingReadReqs; 14111804Srjthakur@google.com 14211804Srjthakur@google.com } else if (pkt_info.cmd.isWrite()) { 14311804Srjthakur@google.com // Same as for reads 14411804Srjthakur@google.com if (!disableTransactionHists) 14511804Srjthakur@google.com ++writeTrans; 14611804Srjthakur@google.com 14711804Srjthakur@google.com if (!disableBurstLengthHists) 14811804Srjthakur@google.com writeBurstLengthHist.sample(pkt_info.size); 14911804Srjthakur@google.com 15011804Srjthakur@google.com // Update the bandwidth stats on the request 15111804Srjthakur@google.com if (!disableBandwidthHists) { 15211804Srjthakur@google.com writtenBytes += pkt_info.size; 15311804Srjthakur@google.com totalWrittenBytes += pkt_info.size; 15411804Srjthakur@google.com } 15511804Srjthakur@google.com 15611804Srjthakur@google.com // Sample the masked write address 15711804Srjthakur@google.com if (!disableAddrDists) 15811804Srjthakur@google.com writeAddrDist.sample(pkt_info.addr & writeAddrMask); 15911804Srjthakur@google.com 16011804Srjthakur@google.com if (!disableITTDists) { 16111804Srjthakur@google.com // Sample value of write-to-write inter transaction time 16211804Srjthakur@google.com if (timeOfLastWrite != 0) 16311804Srjthakur@google.com ittWriteWrite.sample(curTick() - timeOfLastWrite); 16411804Srjthakur@google.com timeOfLastWrite = curTick(); 16511804Srjthakur@google.com 16611804Srjthakur@google.com // Sample value of req-to-req inter transaction time 16711804Srjthakur@google.com if (timeOfLastReq != 0) 16811804Srjthakur@google.com ittReqReq.sample(curTick() - timeOfLastReq); 16911804Srjthakur@google.com timeOfLastReq = curTick(); 17011804Srjthakur@google.com } 17111804Srjthakur@google.com 17211804Srjthakur@google.com if (!is_atomic && !disableOutstandingHists && expects_response) 17311804Srjthakur@google.com ++outstandingWriteReqs; 17411804Srjthakur@google.com } 17511804Srjthakur@google.com} 17611804Srjthakur@google.com 17711804Srjthakur@google.comvoid 17811804Srjthakur@google.comCommMonitor::MonitorStats::updateRespStats( 17911804Srjthakur@google.com const ProbePoints::PacketInfo& pkt_info, Tick latency, bool is_atomic) 18011804Srjthakur@google.com{ 18111804Srjthakur@google.com if (pkt_info.cmd.isRead()) { 18211804Srjthakur@google.com // Decrement number of outstanding read requests 18311804Srjthakur@google.com if (!is_atomic && !disableOutstandingHists) { 18411804Srjthakur@google.com assert(outstandingReadReqs != 0); 18511804Srjthakur@google.com --outstandingReadReqs; 18611804Srjthakur@google.com } 18711804Srjthakur@google.com 18811804Srjthakur@google.com if (!disableLatencyHists) 18911804Srjthakur@google.com readLatencyHist.sample(latency); 19011804Srjthakur@google.com 19111804Srjthakur@google.com // Update the bandwidth stats based on responses for reads 19211804Srjthakur@google.com if (!disableBandwidthHists) { 19311804Srjthakur@google.com readBytes += pkt_info.size; 19411804Srjthakur@google.com totalReadBytes += pkt_info.size; 19511804Srjthakur@google.com } 19611804Srjthakur@google.com 19711804Srjthakur@google.com } else if (pkt_info.cmd.isWrite()) { 19811804Srjthakur@google.com // Decrement number of outstanding write requests 19911804Srjthakur@google.com if (!is_atomic && !disableOutstandingHists) { 20011804Srjthakur@google.com assert(outstandingWriteReqs != 0); 20111804Srjthakur@google.com --outstandingWriteReqs; 20211804Srjthakur@google.com } 20311804Srjthakur@google.com 20411804Srjthakur@google.com if (!disableLatencyHists) 20511804Srjthakur@google.com writeLatencyHist.sample(latency); 20611804Srjthakur@google.com } 20711804Srjthakur@google.com} 20811804Srjthakur@google.com 2098981Sandreas.hansson@arm.comTick 2108981Sandreas.hansson@arm.comCommMonitor::recvAtomic(PacketPtr pkt) 2118981Sandreas.hansson@arm.com{ 21211804Srjthakur@google.com const bool expects_response(pkt->needsResponse() && 21311804Srjthakur@google.com !pkt->cacheResponding()); 21411139Sandreas.hansson@arm.com ProbePoints::PacketInfo req_pkt_info(pkt); 21511139Sandreas.hansson@arm.com ppPktReq->notify(req_pkt_info); 21610994Sandreas.sandberg@arm.com 21710994Sandreas.sandberg@arm.com const Tick delay(masterPort.sendAtomic(pkt)); 21811804Srjthakur@google.com 21911804Srjthakur@google.com stats.updateReqStats(req_pkt_info, true, expects_response); 22011804Srjthakur@google.com if (expects_response) 22111804Srjthakur@google.com stats.updateRespStats(req_pkt_info, delay, true); 22211804Srjthakur@google.com 22310994Sandreas.sandberg@arm.com assert(pkt->isResponse()); 22411139Sandreas.hansson@arm.com ProbePoints::PacketInfo resp_pkt_info(pkt); 22511139Sandreas.hansson@arm.com ppPktResp->notify(resp_pkt_info); 22610994Sandreas.sandberg@arm.com return delay; 2278981Sandreas.hansson@arm.com} 2288981Sandreas.hansson@arm.com 2298981Sandreas.hansson@arm.comTick 2308981Sandreas.hansson@arm.comCommMonitor::recvAtomicSnoop(PacketPtr pkt) 2318981Sandreas.hansson@arm.com{ 2328981Sandreas.hansson@arm.com return slavePort.sendAtomicSnoop(pkt); 2338981Sandreas.hansson@arm.com} 2348981Sandreas.hansson@arm.com 2358981Sandreas.hansson@arm.combool 2368981Sandreas.hansson@arm.comCommMonitor::recvTimingReq(PacketPtr pkt) 2378981Sandreas.hansson@arm.com{ 2388981Sandreas.hansson@arm.com // should always see a request 2398981Sandreas.hansson@arm.com assert(pkt->isRequest()); 2408981Sandreas.hansson@arm.com 2418981Sandreas.hansson@arm.com // Store relevant fields of packet, because packet may be modified 2428981Sandreas.hansson@arm.com // or even deleted when sendTiming() is called. 24311139Sandreas.hansson@arm.com const ProbePoints::PacketInfo pkt_info(pkt); 24411139Sandreas.hansson@arm.com 24511804Srjthakur@google.com const bool expects_response(pkt->needsResponse() && 24611804Srjthakur@google.com !pkt->cacheResponding()); 2478981Sandreas.hansson@arm.com 2488981Sandreas.hansson@arm.com // If a cache miss is served by a cache, a monitor near the memory 2498981Sandreas.hansson@arm.com // would see a request which needs a response, but this response 25011284Sandreas.hansson@arm.com // would not come back from the memory. Therefore we additionally 25111284Sandreas.hansson@arm.com // have to check the cacheResponding flag 2529785Sandreas.hansson@arm.com if (expects_response && !stats.disableLatencyHists) { 2539542Sandreas.hansson@arm.com pkt->pushSenderState(new CommMonitorSenderState(curTick())); 2548981Sandreas.hansson@arm.com } 2558981Sandreas.hansson@arm.com 25611284Sandreas.hansson@arm.com // Attempt to send the packet 2578981Sandreas.hansson@arm.com bool successful = masterPort.sendTimingReq(pkt); 2588981Sandreas.hansson@arm.com 2598981Sandreas.hansson@arm.com // If not successful, restore the sender state 2609785Sandreas.hansson@arm.com if (!successful && expects_response && !stats.disableLatencyHists) { 2619542Sandreas.hansson@arm.com delete pkt->popSenderState(); 2628981Sandreas.hansson@arm.com } 2638981Sandreas.hansson@arm.com 26410994Sandreas.sandberg@arm.com if (successful) { 26511139Sandreas.hansson@arm.com ppPktReq->notify(pkt_info); 26610994Sandreas.sandberg@arm.com } 26710994Sandreas.sandberg@arm.com 26811804Srjthakur@google.com if (successful) { 26911847Spierre-yves.peneau@lirmm.fr DPRINTF(CommMonitor, "Forwarded %s request\n", pkt->isRead() ? "read" : 27011847Spierre-yves.peneau@lirmm.fr pkt->isWrite() ? "write" : "non read/write"); 27111804Srjthakur@google.com stats.updateReqStats(pkt_info, false, expects_response); 2728981Sandreas.hansson@arm.com } 2738981Sandreas.hansson@arm.com return successful; 2748981Sandreas.hansson@arm.com} 2758981Sandreas.hansson@arm.com 2768981Sandreas.hansson@arm.combool 2778981Sandreas.hansson@arm.comCommMonitor::recvTimingResp(PacketPtr pkt) 2788981Sandreas.hansson@arm.com{ 2798981Sandreas.hansson@arm.com // should always see responses 2808981Sandreas.hansson@arm.com assert(pkt->isResponse()); 2818981Sandreas.hansson@arm.com 2828981Sandreas.hansson@arm.com // Store relevant fields of packet, because packet may be modified 2838981Sandreas.hansson@arm.com // or even deleted when sendTiming() is called. 28411139Sandreas.hansson@arm.com const ProbePoints::PacketInfo pkt_info(pkt); 28511139Sandreas.hansson@arm.com 2868981Sandreas.hansson@arm.com Tick latency = 0; 2879785Sandreas.hansson@arm.com CommMonitorSenderState* received_state = 2888981Sandreas.hansson@arm.com dynamic_cast<CommMonitorSenderState*>(pkt->senderState); 2898981Sandreas.hansson@arm.com 2908981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 2918981Sandreas.hansson@arm.com // Restore initial sender state 2929785Sandreas.hansson@arm.com if (received_state == NULL) 2938981Sandreas.hansson@arm.com panic("Monitor got a response without monitor sender state\n"); 2948981Sandreas.hansson@arm.com 2958981Sandreas.hansson@arm.com // Restore the sate 2969785Sandreas.hansson@arm.com pkt->senderState = received_state->predecessor; 2978981Sandreas.hansson@arm.com } 2988981Sandreas.hansson@arm.com 2998981Sandreas.hansson@arm.com // Attempt to send the packet 3008981Sandreas.hansson@arm.com bool successful = slavePort.sendTimingResp(pkt); 3018981Sandreas.hansson@arm.com 3028981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 3038981Sandreas.hansson@arm.com // If packet successfully send, sample value of latency, 3048981Sandreas.hansson@arm.com // afterwards delete sender state, otherwise restore state 3058981Sandreas.hansson@arm.com if (successful) { 3069785Sandreas.hansson@arm.com latency = curTick() - received_state->transmitTime; 3078981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Latency: %d\n", latency); 3089785Sandreas.hansson@arm.com delete received_state; 3098981Sandreas.hansson@arm.com } else { 3108981Sandreas.hansson@arm.com // Don't delete anything and let the packet look like we 3118981Sandreas.hansson@arm.com // did not touch it 3129785Sandreas.hansson@arm.com pkt->senderState = received_state; 3138981Sandreas.hansson@arm.com } 3148981Sandreas.hansson@arm.com } 3158981Sandreas.hansson@arm.com 31610994Sandreas.sandberg@arm.com if (successful) { 31711139Sandreas.hansson@arm.com ppPktResp->notify(pkt_info); 31811847Spierre-yves.peneau@lirmm.fr DPRINTF(CommMonitor, "Received %s response\n", pkt->isRead() ? "read" : 31911847Spierre-yves.peneau@lirmm.fr pkt->isWrite() ? "write" : "non read/write"); 32011804Srjthakur@google.com stats.updateRespStats(pkt_info, latency, false); 3218981Sandreas.hansson@arm.com } 3228981Sandreas.hansson@arm.com return successful; 3238981Sandreas.hansson@arm.com} 3248981Sandreas.hansson@arm.com 3258981Sandreas.hansson@arm.comvoid 3268981Sandreas.hansson@arm.comCommMonitor::recvTimingSnoopReq(PacketPtr pkt) 3278981Sandreas.hansson@arm.com{ 3288981Sandreas.hansson@arm.com slavePort.sendTimingSnoopReq(pkt); 3298981Sandreas.hansson@arm.com} 3308981Sandreas.hansson@arm.com 3318981Sandreas.hansson@arm.combool 3328981Sandreas.hansson@arm.comCommMonitor::recvTimingSnoopResp(PacketPtr pkt) 3338981Sandreas.hansson@arm.com{ 3348981Sandreas.hansson@arm.com return masterPort.sendTimingSnoopResp(pkt); 3358981Sandreas.hansson@arm.com} 3368981Sandreas.hansson@arm.com 33711173Sandreas.hansson@arm.comvoid 33811173Sandreas.hansson@arm.comCommMonitor::recvRetrySnoopResp() 33911173Sandreas.hansson@arm.com{ 34011173Sandreas.hansson@arm.com slavePort.sendRetrySnoopResp(); 34111173Sandreas.hansson@arm.com} 34211173Sandreas.hansson@arm.com 3438981Sandreas.hansson@arm.combool 3448981Sandreas.hansson@arm.comCommMonitor::isSnooping() const 3458981Sandreas.hansson@arm.com{ 3469088Sandreas.hansson@arm.com // check if the connected master port is snooping 3479088Sandreas.hansson@arm.com return slavePort.isSnooping(); 3488981Sandreas.hansson@arm.com} 3498981Sandreas.hansson@arm.com 3508981Sandreas.hansson@arm.comAddrRangeList 3519090Sandreas.hansson@arm.comCommMonitor::getAddrRanges() const 3528981Sandreas.hansson@arm.com{ 3539089Sandreas.hansson@arm.com // get the address ranges of the connected slave port 3549089Sandreas.hansson@arm.com return masterPort.getAddrRanges(); 3558981Sandreas.hansson@arm.com} 3568981Sandreas.hansson@arm.com 3578981Sandreas.hansson@arm.comvoid 35810713Sandreas.hansson@arm.comCommMonitor::recvReqRetry() 3598981Sandreas.hansson@arm.com{ 36010713Sandreas.hansson@arm.com slavePort.sendRetryReq(); 3618981Sandreas.hansson@arm.com} 3628981Sandreas.hansson@arm.com 3638981Sandreas.hansson@arm.comvoid 36410713Sandreas.hansson@arm.comCommMonitor::recvRespRetry() 3658981Sandreas.hansson@arm.com{ 36610713Sandreas.hansson@arm.com masterPort.sendRetryResp(); 3678981Sandreas.hansson@arm.com} 3688981Sandreas.hansson@arm.com 36913573Ssascha.bischoff@arm.combool 37013573Ssascha.bischoff@arm.comCommMonitor::tryTiming(PacketPtr pkt) 37113573Ssascha.bischoff@arm.com{ 37213573Ssascha.bischoff@arm.com return masterPort.tryTiming(pkt); 37313573Ssascha.bischoff@arm.com} 37413573Ssascha.bischoff@arm.com 3758981Sandreas.hansson@arm.comvoid 3768981Sandreas.hansson@arm.comCommMonitor::recvRangeChange() 3778981Sandreas.hansson@arm.com{ 3788981Sandreas.hansson@arm.com slavePort.sendRangeChange(); 3798981Sandreas.hansson@arm.com} 3808981Sandreas.hansson@arm.com 3818981Sandreas.hansson@arm.comvoid 3828981Sandreas.hansson@arm.comCommMonitor::regStats() 3838981Sandreas.hansson@arm.com{ 38411522Sstephan.diestelhorst@arm.com MemObject::regStats(); 38511522Sstephan.diestelhorst@arm.com 3868981Sandreas.hansson@arm.com // Initialise all the monitor stats 3878981Sandreas.hansson@arm.com using namespace Stats; 3888981Sandreas.hansson@arm.com 3898981Sandreas.hansson@arm.com stats.readBurstLengthHist 3908981Sandreas.hansson@arm.com .init(params()->burst_length_bins) 3918981Sandreas.hansson@arm.com .name(name() + ".readBurstLengthHist") 3928981Sandreas.hansson@arm.com .desc("Histogram of burst lengths of transmitted packets") 3938981Sandreas.hansson@arm.com .flags(stats.disableBurstLengthHists ? nozero : pdf); 3948981Sandreas.hansson@arm.com 3958981Sandreas.hansson@arm.com stats.writeBurstLengthHist 3968981Sandreas.hansson@arm.com .init(params()->burst_length_bins) 3978981Sandreas.hansson@arm.com .name(name() + ".writeBurstLengthHist") 3988981Sandreas.hansson@arm.com .desc("Histogram of burst lengths of transmitted packets") 3998981Sandreas.hansson@arm.com .flags(stats.disableBurstLengthHists ? nozero : pdf); 4008981Sandreas.hansson@arm.com 4018981Sandreas.hansson@arm.com // Stats based on received responses 4028981Sandreas.hansson@arm.com stats.readBandwidthHist 4038981Sandreas.hansson@arm.com .init(params()->bandwidth_bins) 4048981Sandreas.hansson@arm.com .name(name() + ".readBandwidthHist") 4058981Sandreas.hansson@arm.com .desc("Histogram of read bandwidth per sample period (bytes/s)") 4068981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4078981Sandreas.hansson@arm.com 4088981Sandreas.hansson@arm.com stats.averageReadBW 4098981Sandreas.hansson@arm.com .name(name() + ".averageReadBandwidth") 4108981Sandreas.hansson@arm.com .desc("Average read bandwidth (bytes/s)") 4118981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4128981Sandreas.hansson@arm.com 4138981Sandreas.hansson@arm.com stats.totalReadBytes 4148981Sandreas.hansson@arm.com .name(name() + ".totalReadBytes") 4158981Sandreas.hansson@arm.com .desc("Number of bytes read") 4168981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4178981Sandreas.hansson@arm.com 4188981Sandreas.hansson@arm.com stats.averageReadBW = stats.totalReadBytes / simSeconds; 4198981Sandreas.hansson@arm.com 4208981Sandreas.hansson@arm.com // Stats based on successfully sent requests 4218981Sandreas.hansson@arm.com stats.writeBandwidthHist 4228981Sandreas.hansson@arm.com .init(params()->bandwidth_bins) 4238981Sandreas.hansson@arm.com .name(name() + ".writeBandwidthHist") 4248981Sandreas.hansson@arm.com .desc("Histogram of write bandwidth (bytes/s)") 4258981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? (pdf | nozero) : pdf); 4268981Sandreas.hansson@arm.com 4278981Sandreas.hansson@arm.com stats.averageWriteBW 4288981Sandreas.hansson@arm.com .name(name() + ".averageWriteBandwidth") 4298981Sandreas.hansson@arm.com .desc("Average write bandwidth (bytes/s)") 4308981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4318981Sandreas.hansson@arm.com 4328981Sandreas.hansson@arm.com stats.totalWrittenBytes 4338981Sandreas.hansson@arm.com .name(name() + ".totalWrittenBytes") 4348981Sandreas.hansson@arm.com .desc("Number of bytes written") 4358981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4368981Sandreas.hansson@arm.com 4378981Sandreas.hansson@arm.com stats.averageWriteBW = stats.totalWrittenBytes / simSeconds; 4388981Sandreas.hansson@arm.com 4398981Sandreas.hansson@arm.com stats.readLatencyHist 4408981Sandreas.hansson@arm.com .init(params()->latency_bins) 4418981Sandreas.hansson@arm.com .name(name() + ".readLatencyHist") 4428981Sandreas.hansson@arm.com .desc("Read request-response latency") 4438981Sandreas.hansson@arm.com .flags(stats.disableLatencyHists ? nozero : pdf); 4448981Sandreas.hansson@arm.com 4458981Sandreas.hansson@arm.com stats.writeLatencyHist 4468981Sandreas.hansson@arm.com .init(params()->latency_bins) 4478981Sandreas.hansson@arm.com .name(name() + ".writeLatencyHist") 4488981Sandreas.hansson@arm.com .desc("Write request-response latency") 4498981Sandreas.hansson@arm.com .flags(stats.disableLatencyHists ? nozero : pdf); 4508981Sandreas.hansson@arm.com 4518981Sandreas.hansson@arm.com stats.ittReadRead 4528981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 4538981Sandreas.hansson@arm.com params()->itt_bins) 4548981Sandreas.hansson@arm.com .name(name() + ".ittReadRead") 4558981Sandreas.hansson@arm.com .desc("Read-to-read inter transaction time") 4568981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4578981Sandreas.hansson@arm.com 4588981Sandreas.hansson@arm.com stats.ittWriteWrite 4598981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 4608981Sandreas.hansson@arm.com params()->itt_bins) 4618981Sandreas.hansson@arm.com .name(name() + ".ittWriteWrite") 4628981Sandreas.hansson@arm.com .desc("Write-to-write inter transaction time") 4638981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4648981Sandreas.hansson@arm.com 4658981Sandreas.hansson@arm.com stats.ittReqReq 4668981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 4678981Sandreas.hansson@arm.com params()->itt_bins) 4688981Sandreas.hansson@arm.com .name(name() + ".ittReqReq") 4698981Sandreas.hansson@arm.com .desc("Request-to-request inter transaction time") 4708981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4718981Sandreas.hansson@arm.com 4728981Sandreas.hansson@arm.com stats.outstandingReadsHist 4738981Sandreas.hansson@arm.com .init(params()->outstanding_bins) 4748981Sandreas.hansson@arm.com .name(name() + ".outstandingReadsHist") 4758981Sandreas.hansson@arm.com .desc("Outstanding read transactions") 4768981Sandreas.hansson@arm.com .flags(stats.disableOutstandingHists ? nozero : pdf); 4778981Sandreas.hansson@arm.com 4788981Sandreas.hansson@arm.com stats.outstandingWritesHist 4798981Sandreas.hansson@arm.com .init(params()->outstanding_bins) 4808981Sandreas.hansson@arm.com .name(name() + ".outstandingWritesHist") 4818981Sandreas.hansson@arm.com .desc("Outstanding write transactions") 4828981Sandreas.hansson@arm.com .flags(stats.disableOutstandingHists ? nozero : pdf); 4838981Sandreas.hansson@arm.com 4848981Sandreas.hansson@arm.com stats.readTransHist 4858981Sandreas.hansson@arm.com .init(params()->transaction_bins) 4868981Sandreas.hansson@arm.com .name(name() + ".readTransHist") 4878981Sandreas.hansson@arm.com .desc("Histogram of read transactions per sample period") 4888981Sandreas.hansson@arm.com .flags(stats.disableTransactionHists ? nozero : pdf); 4898981Sandreas.hansson@arm.com 4908981Sandreas.hansson@arm.com stats.writeTransHist 4918981Sandreas.hansson@arm.com .init(params()->transaction_bins) 4928981Sandreas.hansson@arm.com .name(name() + ".writeTransHist") 49311848Spierre-yves.peneau@lirmm.fr .desc("Histogram of write transactions per sample period") 4948981Sandreas.hansson@arm.com .flags(stats.disableTransactionHists ? nozero : pdf); 4958981Sandreas.hansson@arm.com 4968981Sandreas.hansson@arm.com stats.readAddrDist 4978981Sandreas.hansson@arm.com .init(0) 4988981Sandreas.hansson@arm.com .name(name() + ".readAddrDist") 4998981Sandreas.hansson@arm.com .desc("Read address distribution") 5008981Sandreas.hansson@arm.com .flags(stats.disableAddrDists ? nozero : pdf); 5018981Sandreas.hansson@arm.com 5028981Sandreas.hansson@arm.com stats.writeAddrDist 5038981Sandreas.hansson@arm.com .init(0) 5048981Sandreas.hansson@arm.com .name(name() + ".writeAddrDist") 5058981Sandreas.hansson@arm.com .desc("Write address distribution") 5068981Sandreas.hansson@arm.com .flags(stats.disableAddrDists ? nozero : pdf); 5078981Sandreas.hansson@arm.com} 5088981Sandreas.hansson@arm.com 5098981Sandreas.hansson@arm.comvoid 5108981Sandreas.hansson@arm.comCommMonitor::samplePeriodic() 5118981Sandreas.hansson@arm.com{ 5128981Sandreas.hansson@arm.com // the periodic stats update runs on the granularity of sample 5138981Sandreas.hansson@arm.com // periods, but in combination with this there may also be a 5148981Sandreas.hansson@arm.com // external resets and dumps of the stats (through schedStatEvent) 5158981Sandreas.hansson@arm.com // causing the stats themselves to capture less than a sample 5168981Sandreas.hansson@arm.com // period 5178981Sandreas.hansson@arm.com 5188981Sandreas.hansson@arm.com // only capture if we have not reset the stats during the last 5198981Sandreas.hansson@arm.com // sample period 5208981Sandreas.hansson@arm.com if (simTicks.value() >= samplePeriodTicks) { 5218981Sandreas.hansson@arm.com if (!stats.disableTransactionHists) { 5228981Sandreas.hansson@arm.com stats.readTransHist.sample(stats.readTrans); 5238981Sandreas.hansson@arm.com stats.writeTransHist.sample(stats.writeTrans); 5248981Sandreas.hansson@arm.com } 5258981Sandreas.hansson@arm.com 5268981Sandreas.hansson@arm.com if (!stats.disableBandwidthHists) { 5278981Sandreas.hansson@arm.com stats.readBandwidthHist.sample(stats.readBytes / samplePeriod); 5288981Sandreas.hansson@arm.com stats.writeBandwidthHist.sample(stats.writtenBytes / samplePeriod); 5298981Sandreas.hansson@arm.com } 5308981Sandreas.hansson@arm.com 5318981Sandreas.hansson@arm.com if (!stats.disableOutstandingHists) { 5328981Sandreas.hansson@arm.com stats.outstandingReadsHist.sample(stats.outstandingReadReqs); 5338981Sandreas.hansson@arm.com stats.outstandingWritesHist.sample(stats.outstandingWriteReqs); 5348981Sandreas.hansson@arm.com } 5358981Sandreas.hansson@arm.com } 5368981Sandreas.hansson@arm.com 5378981Sandreas.hansson@arm.com // reset the sampled values 5388981Sandreas.hansson@arm.com stats.readTrans = 0; 5398981Sandreas.hansson@arm.com stats.writeTrans = 0; 5408981Sandreas.hansson@arm.com 5418981Sandreas.hansson@arm.com stats.readBytes = 0; 5428981Sandreas.hansson@arm.com stats.writtenBytes = 0; 5438981Sandreas.hansson@arm.com 5448981Sandreas.hansson@arm.com schedule(samplePeriodicEvent, curTick() + samplePeriodTicks); 5458981Sandreas.hansson@arm.com} 5468981Sandreas.hansson@arm.com 5478981Sandreas.hansson@arm.comvoid 5488981Sandreas.hansson@arm.comCommMonitor::startup() 5498981Sandreas.hansson@arm.com{ 5508981Sandreas.hansson@arm.com schedule(samplePeriodicEvent, curTick() + samplePeriodTicks); 5518981Sandreas.hansson@arm.com} 552