comm_monitor.cc revision 14084
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) 5213892Sgabeblack@google.com : SimObject(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 { 9413892Sgabeblack@google.com return SimObject::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 22314084Schunchenhsu@google.com // Some packets, such as WritebackDirty, don't need response. 22414084Schunchenhsu@google.com assert(pkt->isResponse() || !expects_response); 22511139Sandreas.hansson@arm.com ProbePoints::PacketInfo resp_pkt_info(pkt); 22611139Sandreas.hansson@arm.com ppPktResp->notify(resp_pkt_info); 22710994Sandreas.sandberg@arm.com return delay; 2288981Sandreas.hansson@arm.com} 2298981Sandreas.hansson@arm.com 2308981Sandreas.hansson@arm.comTick 2318981Sandreas.hansson@arm.comCommMonitor::recvAtomicSnoop(PacketPtr pkt) 2328981Sandreas.hansson@arm.com{ 2338981Sandreas.hansson@arm.com return slavePort.sendAtomicSnoop(pkt); 2348981Sandreas.hansson@arm.com} 2358981Sandreas.hansson@arm.com 2368981Sandreas.hansson@arm.combool 2378981Sandreas.hansson@arm.comCommMonitor::recvTimingReq(PacketPtr pkt) 2388981Sandreas.hansson@arm.com{ 2398981Sandreas.hansson@arm.com // should always see a request 2408981Sandreas.hansson@arm.com assert(pkt->isRequest()); 2418981Sandreas.hansson@arm.com 2428981Sandreas.hansson@arm.com // Store relevant fields of packet, because packet may be modified 2438981Sandreas.hansson@arm.com // or even deleted when sendTiming() is called. 24411139Sandreas.hansson@arm.com const ProbePoints::PacketInfo pkt_info(pkt); 24511139Sandreas.hansson@arm.com 24611804Srjthakur@google.com const bool expects_response(pkt->needsResponse() && 24711804Srjthakur@google.com !pkt->cacheResponding()); 2488981Sandreas.hansson@arm.com 2498981Sandreas.hansson@arm.com // If a cache miss is served by a cache, a monitor near the memory 2508981Sandreas.hansson@arm.com // would see a request which needs a response, but this response 25111284Sandreas.hansson@arm.com // would not come back from the memory. Therefore we additionally 25211284Sandreas.hansson@arm.com // have to check the cacheResponding flag 2539785Sandreas.hansson@arm.com if (expects_response && !stats.disableLatencyHists) { 2549542Sandreas.hansson@arm.com pkt->pushSenderState(new CommMonitorSenderState(curTick())); 2558981Sandreas.hansson@arm.com } 2568981Sandreas.hansson@arm.com 25711284Sandreas.hansson@arm.com // Attempt to send the packet 2588981Sandreas.hansson@arm.com bool successful = masterPort.sendTimingReq(pkt); 2598981Sandreas.hansson@arm.com 2608981Sandreas.hansson@arm.com // If not successful, restore the sender state 2619785Sandreas.hansson@arm.com if (!successful && expects_response && !stats.disableLatencyHists) { 2629542Sandreas.hansson@arm.com delete pkt->popSenderState(); 2638981Sandreas.hansson@arm.com } 2648981Sandreas.hansson@arm.com 26510994Sandreas.sandberg@arm.com if (successful) { 26611139Sandreas.hansson@arm.com ppPktReq->notify(pkt_info); 26710994Sandreas.sandberg@arm.com } 26810994Sandreas.sandberg@arm.com 26911804Srjthakur@google.com if (successful) { 27011847Spierre-yves.peneau@lirmm.fr DPRINTF(CommMonitor, "Forwarded %s request\n", pkt->isRead() ? "read" : 27111847Spierre-yves.peneau@lirmm.fr pkt->isWrite() ? "write" : "non read/write"); 27211804Srjthakur@google.com stats.updateReqStats(pkt_info, false, expects_response); 2738981Sandreas.hansson@arm.com } 2748981Sandreas.hansson@arm.com return successful; 2758981Sandreas.hansson@arm.com} 2768981Sandreas.hansson@arm.com 2778981Sandreas.hansson@arm.combool 2788981Sandreas.hansson@arm.comCommMonitor::recvTimingResp(PacketPtr pkt) 2798981Sandreas.hansson@arm.com{ 2808981Sandreas.hansson@arm.com // should always see responses 2818981Sandreas.hansson@arm.com assert(pkt->isResponse()); 2828981Sandreas.hansson@arm.com 2838981Sandreas.hansson@arm.com // Store relevant fields of packet, because packet may be modified 2848981Sandreas.hansson@arm.com // or even deleted when sendTiming() is called. 28511139Sandreas.hansson@arm.com const ProbePoints::PacketInfo pkt_info(pkt); 28611139Sandreas.hansson@arm.com 2878981Sandreas.hansson@arm.com Tick latency = 0; 2889785Sandreas.hansson@arm.com CommMonitorSenderState* received_state = 2898981Sandreas.hansson@arm.com dynamic_cast<CommMonitorSenderState*>(pkt->senderState); 2908981Sandreas.hansson@arm.com 2918981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 2928981Sandreas.hansson@arm.com // Restore initial sender state 2939785Sandreas.hansson@arm.com if (received_state == NULL) 2948981Sandreas.hansson@arm.com panic("Monitor got a response without monitor sender state\n"); 2958981Sandreas.hansson@arm.com 2968981Sandreas.hansson@arm.com // Restore the sate 2979785Sandreas.hansson@arm.com pkt->senderState = received_state->predecessor; 2988981Sandreas.hansson@arm.com } 2998981Sandreas.hansson@arm.com 3008981Sandreas.hansson@arm.com // Attempt to send the packet 3018981Sandreas.hansson@arm.com bool successful = slavePort.sendTimingResp(pkt); 3028981Sandreas.hansson@arm.com 3038981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 3048981Sandreas.hansson@arm.com // If packet successfully send, sample value of latency, 3058981Sandreas.hansson@arm.com // afterwards delete sender state, otherwise restore state 3068981Sandreas.hansson@arm.com if (successful) { 3079785Sandreas.hansson@arm.com latency = curTick() - received_state->transmitTime; 3088981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Latency: %d\n", latency); 3099785Sandreas.hansson@arm.com delete received_state; 3108981Sandreas.hansson@arm.com } else { 3118981Sandreas.hansson@arm.com // Don't delete anything and let the packet look like we 3128981Sandreas.hansson@arm.com // did not touch it 3139785Sandreas.hansson@arm.com pkt->senderState = received_state; 3148981Sandreas.hansson@arm.com } 3158981Sandreas.hansson@arm.com } 3168981Sandreas.hansson@arm.com 31710994Sandreas.sandberg@arm.com if (successful) { 31811139Sandreas.hansson@arm.com ppPktResp->notify(pkt_info); 31911847Spierre-yves.peneau@lirmm.fr DPRINTF(CommMonitor, "Received %s response\n", pkt->isRead() ? "read" : 32011847Spierre-yves.peneau@lirmm.fr pkt->isWrite() ? "write" : "non read/write"); 32111804Srjthakur@google.com stats.updateRespStats(pkt_info, latency, false); 3228981Sandreas.hansson@arm.com } 3238981Sandreas.hansson@arm.com return successful; 3248981Sandreas.hansson@arm.com} 3258981Sandreas.hansson@arm.com 3268981Sandreas.hansson@arm.comvoid 3278981Sandreas.hansson@arm.comCommMonitor::recvTimingSnoopReq(PacketPtr pkt) 3288981Sandreas.hansson@arm.com{ 3298981Sandreas.hansson@arm.com slavePort.sendTimingSnoopReq(pkt); 3308981Sandreas.hansson@arm.com} 3318981Sandreas.hansson@arm.com 3328981Sandreas.hansson@arm.combool 3338981Sandreas.hansson@arm.comCommMonitor::recvTimingSnoopResp(PacketPtr pkt) 3348981Sandreas.hansson@arm.com{ 3358981Sandreas.hansson@arm.com return masterPort.sendTimingSnoopResp(pkt); 3368981Sandreas.hansson@arm.com} 3378981Sandreas.hansson@arm.com 33811173Sandreas.hansson@arm.comvoid 33911173Sandreas.hansson@arm.comCommMonitor::recvRetrySnoopResp() 34011173Sandreas.hansson@arm.com{ 34111173Sandreas.hansson@arm.com slavePort.sendRetrySnoopResp(); 34211173Sandreas.hansson@arm.com} 34311173Sandreas.hansson@arm.com 3448981Sandreas.hansson@arm.combool 3458981Sandreas.hansson@arm.comCommMonitor::isSnooping() const 3468981Sandreas.hansson@arm.com{ 3479088Sandreas.hansson@arm.com // check if the connected master port is snooping 3489088Sandreas.hansson@arm.com return slavePort.isSnooping(); 3498981Sandreas.hansson@arm.com} 3508981Sandreas.hansson@arm.com 3518981Sandreas.hansson@arm.comAddrRangeList 3529090Sandreas.hansson@arm.comCommMonitor::getAddrRanges() const 3538981Sandreas.hansson@arm.com{ 3549089Sandreas.hansson@arm.com // get the address ranges of the connected slave port 3559089Sandreas.hansson@arm.com return masterPort.getAddrRanges(); 3568981Sandreas.hansson@arm.com} 3578981Sandreas.hansson@arm.com 3588981Sandreas.hansson@arm.comvoid 35910713Sandreas.hansson@arm.comCommMonitor::recvReqRetry() 3608981Sandreas.hansson@arm.com{ 36110713Sandreas.hansson@arm.com slavePort.sendRetryReq(); 3628981Sandreas.hansson@arm.com} 3638981Sandreas.hansson@arm.com 3648981Sandreas.hansson@arm.comvoid 36510713Sandreas.hansson@arm.comCommMonitor::recvRespRetry() 3668981Sandreas.hansson@arm.com{ 36710713Sandreas.hansson@arm.com masterPort.sendRetryResp(); 3688981Sandreas.hansson@arm.com} 3698981Sandreas.hansson@arm.com 37013573Ssascha.bischoff@arm.combool 37113573Ssascha.bischoff@arm.comCommMonitor::tryTiming(PacketPtr pkt) 37213573Ssascha.bischoff@arm.com{ 37313573Ssascha.bischoff@arm.com return masterPort.tryTiming(pkt); 37413573Ssascha.bischoff@arm.com} 37513573Ssascha.bischoff@arm.com 3768981Sandreas.hansson@arm.comvoid 3778981Sandreas.hansson@arm.comCommMonitor::recvRangeChange() 3788981Sandreas.hansson@arm.com{ 3798981Sandreas.hansson@arm.com slavePort.sendRangeChange(); 3808981Sandreas.hansson@arm.com} 3818981Sandreas.hansson@arm.com 3828981Sandreas.hansson@arm.comvoid 3838981Sandreas.hansson@arm.comCommMonitor::regStats() 3848981Sandreas.hansson@arm.com{ 38513892Sgabeblack@google.com SimObject::regStats(); 38611522Sstephan.diestelhorst@arm.com 3878981Sandreas.hansson@arm.com // Initialise all the monitor stats 3888981Sandreas.hansson@arm.com using namespace Stats; 3898981Sandreas.hansson@arm.com 3908981Sandreas.hansson@arm.com stats.readBurstLengthHist 3918981Sandreas.hansson@arm.com .init(params()->burst_length_bins) 3928981Sandreas.hansson@arm.com .name(name() + ".readBurstLengthHist") 3938981Sandreas.hansson@arm.com .desc("Histogram of burst lengths of transmitted packets") 3948981Sandreas.hansson@arm.com .flags(stats.disableBurstLengthHists ? nozero : pdf); 3958981Sandreas.hansson@arm.com 3968981Sandreas.hansson@arm.com stats.writeBurstLengthHist 3978981Sandreas.hansson@arm.com .init(params()->burst_length_bins) 3988981Sandreas.hansson@arm.com .name(name() + ".writeBurstLengthHist") 3998981Sandreas.hansson@arm.com .desc("Histogram of burst lengths of transmitted packets") 4008981Sandreas.hansson@arm.com .flags(stats.disableBurstLengthHists ? nozero : pdf); 4018981Sandreas.hansson@arm.com 4028981Sandreas.hansson@arm.com // Stats based on received responses 4038981Sandreas.hansson@arm.com stats.readBandwidthHist 4048981Sandreas.hansson@arm.com .init(params()->bandwidth_bins) 4058981Sandreas.hansson@arm.com .name(name() + ".readBandwidthHist") 4068981Sandreas.hansson@arm.com .desc("Histogram of read bandwidth per sample period (bytes/s)") 4078981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4088981Sandreas.hansson@arm.com 4098981Sandreas.hansson@arm.com stats.averageReadBW 4108981Sandreas.hansson@arm.com .name(name() + ".averageReadBandwidth") 4118981Sandreas.hansson@arm.com .desc("Average read bandwidth (bytes/s)") 4128981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4138981Sandreas.hansson@arm.com 4148981Sandreas.hansson@arm.com stats.totalReadBytes 4158981Sandreas.hansson@arm.com .name(name() + ".totalReadBytes") 4168981Sandreas.hansson@arm.com .desc("Number of bytes read") 4178981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4188981Sandreas.hansson@arm.com 4198981Sandreas.hansson@arm.com stats.averageReadBW = stats.totalReadBytes / simSeconds; 4208981Sandreas.hansson@arm.com 4218981Sandreas.hansson@arm.com // Stats based on successfully sent requests 4228981Sandreas.hansson@arm.com stats.writeBandwidthHist 4238981Sandreas.hansson@arm.com .init(params()->bandwidth_bins) 4248981Sandreas.hansson@arm.com .name(name() + ".writeBandwidthHist") 4258981Sandreas.hansson@arm.com .desc("Histogram of write bandwidth (bytes/s)") 4268981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? (pdf | nozero) : pdf); 4278981Sandreas.hansson@arm.com 4288981Sandreas.hansson@arm.com stats.averageWriteBW 4298981Sandreas.hansson@arm.com .name(name() + ".averageWriteBandwidth") 4308981Sandreas.hansson@arm.com .desc("Average write bandwidth (bytes/s)") 4318981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4328981Sandreas.hansson@arm.com 4338981Sandreas.hansson@arm.com stats.totalWrittenBytes 4348981Sandreas.hansson@arm.com .name(name() + ".totalWrittenBytes") 4358981Sandreas.hansson@arm.com .desc("Number of bytes written") 4368981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4378981Sandreas.hansson@arm.com 4388981Sandreas.hansson@arm.com stats.averageWriteBW = stats.totalWrittenBytes / simSeconds; 4398981Sandreas.hansson@arm.com 4408981Sandreas.hansson@arm.com stats.readLatencyHist 4418981Sandreas.hansson@arm.com .init(params()->latency_bins) 4428981Sandreas.hansson@arm.com .name(name() + ".readLatencyHist") 4438981Sandreas.hansson@arm.com .desc("Read request-response latency") 4448981Sandreas.hansson@arm.com .flags(stats.disableLatencyHists ? nozero : pdf); 4458981Sandreas.hansson@arm.com 4468981Sandreas.hansson@arm.com stats.writeLatencyHist 4478981Sandreas.hansson@arm.com .init(params()->latency_bins) 4488981Sandreas.hansson@arm.com .name(name() + ".writeLatencyHist") 4498981Sandreas.hansson@arm.com .desc("Write request-response latency") 4508981Sandreas.hansson@arm.com .flags(stats.disableLatencyHists ? nozero : pdf); 4518981Sandreas.hansson@arm.com 4528981Sandreas.hansson@arm.com stats.ittReadRead 4538981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 4548981Sandreas.hansson@arm.com params()->itt_bins) 4558981Sandreas.hansson@arm.com .name(name() + ".ittReadRead") 4568981Sandreas.hansson@arm.com .desc("Read-to-read inter transaction time") 4578981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4588981Sandreas.hansson@arm.com 4598981Sandreas.hansson@arm.com stats.ittWriteWrite 4608981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 4618981Sandreas.hansson@arm.com params()->itt_bins) 4628981Sandreas.hansson@arm.com .name(name() + ".ittWriteWrite") 4638981Sandreas.hansson@arm.com .desc("Write-to-write inter transaction time") 4648981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4658981Sandreas.hansson@arm.com 4668981Sandreas.hansson@arm.com stats.ittReqReq 4678981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 4688981Sandreas.hansson@arm.com params()->itt_bins) 4698981Sandreas.hansson@arm.com .name(name() + ".ittReqReq") 4708981Sandreas.hansson@arm.com .desc("Request-to-request inter transaction time") 4718981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4728981Sandreas.hansson@arm.com 4738981Sandreas.hansson@arm.com stats.outstandingReadsHist 4748981Sandreas.hansson@arm.com .init(params()->outstanding_bins) 4758981Sandreas.hansson@arm.com .name(name() + ".outstandingReadsHist") 4768981Sandreas.hansson@arm.com .desc("Outstanding read transactions") 4778981Sandreas.hansson@arm.com .flags(stats.disableOutstandingHists ? nozero : pdf); 4788981Sandreas.hansson@arm.com 4798981Sandreas.hansson@arm.com stats.outstandingWritesHist 4808981Sandreas.hansson@arm.com .init(params()->outstanding_bins) 4818981Sandreas.hansson@arm.com .name(name() + ".outstandingWritesHist") 4828981Sandreas.hansson@arm.com .desc("Outstanding write transactions") 4838981Sandreas.hansson@arm.com .flags(stats.disableOutstandingHists ? nozero : pdf); 4848981Sandreas.hansson@arm.com 4858981Sandreas.hansson@arm.com stats.readTransHist 4868981Sandreas.hansson@arm.com .init(params()->transaction_bins) 4878981Sandreas.hansson@arm.com .name(name() + ".readTransHist") 4888981Sandreas.hansson@arm.com .desc("Histogram of read transactions per sample period") 4898981Sandreas.hansson@arm.com .flags(stats.disableTransactionHists ? nozero : pdf); 4908981Sandreas.hansson@arm.com 4918981Sandreas.hansson@arm.com stats.writeTransHist 4928981Sandreas.hansson@arm.com .init(params()->transaction_bins) 4938981Sandreas.hansson@arm.com .name(name() + ".writeTransHist") 49411848Spierre-yves.peneau@lirmm.fr .desc("Histogram of write transactions per sample period") 4958981Sandreas.hansson@arm.com .flags(stats.disableTransactionHists ? nozero : pdf); 4968981Sandreas.hansson@arm.com 4978981Sandreas.hansson@arm.com stats.readAddrDist 4988981Sandreas.hansson@arm.com .init(0) 4998981Sandreas.hansson@arm.com .name(name() + ".readAddrDist") 5008981Sandreas.hansson@arm.com .desc("Read address distribution") 5018981Sandreas.hansson@arm.com .flags(stats.disableAddrDists ? nozero : pdf); 5028981Sandreas.hansson@arm.com 5038981Sandreas.hansson@arm.com stats.writeAddrDist 5048981Sandreas.hansson@arm.com .init(0) 5058981Sandreas.hansson@arm.com .name(name() + ".writeAddrDist") 5068981Sandreas.hansson@arm.com .desc("Write address distribution") 5078981Sandreas.hansson@arm.com .flags(stats.disableAddrDists ? nozero : pdf); 5088981Sandreas.hansson@arm.com} 5098981Sandreas.hansson@arm.com 5108981Sandreas.hansson@arm.comvoid 5118981Sandreas.hansson@arm.comCommMonitor::samplePeriodic() 5128981Sandreas.hansson@arm.com{ 5138981Sandreas.hansson@arm.com // the periodic stats update runs on the granularity of sample 5148981Sandreas.hansson@arm.com // periods, but in combination with this there may also be a 5158981Sandreas.hansson@arm.com // external resets and dumps of the stats (through schedStatEvent) 5168981Sandreas.hansson@arm.com // causing the stats themselves to capture less than a sample 5178981Sandreas.hansson@arm.com // period 5188981Sandreas.hansson@arm.com 5198981Sandreas.hansson@arm.com // only capture if we have not reset the stats during the last 5208981Sandreas.hansson@arm.com // sample period 5218981Sandreas.hansson@arm.com if (simTicks.value() >= samplePeriodTicks) { 5228981Sandreas.hansson@arm.com if (!stats.disableTransactionHists) { 5238981Sandreas.hansson@arm.com stats.readTransHist.sample(stats.readTrans); 5248981Sandreas.hansson@arm.com stats.writeTransHist.sample(stats.writeTrans); 5258981Sandreas.hansson@arm.com } 5268981Sandreas.hansson@arm.com 5278981Sandreas.hansson@arm.com if (!stats.disableBandwidthHists) { 5288981Sandreas.hansson@arm.com stats.readBandwidthHist.sample(stats.readBytes / samplePeriod); 5298981Sandreas.hansson@arm.com stats.writeBandwidthHist.sample(stats.writtenBytes / samplePeriod); 5308981Sandreas.hansson@arm.com } 5318981Sandreas.hansson@arm.com 5328981Sandreas.hansson@arm.com if (!stats.disableOutstandingHists) { 5338981Sandreas.hansson@arm.com stats.outstandingReadsHist.sample(stats.outstandingReadReqs); 5348981Sandreas.hansson@arm.com stats.outstandingWritesHist.sample(stats.outstandingWriteReqs); 5358981Sandreas.hansson@arm.com } 5368981Sandreas.hansson@arm.com } 5378981Sandreas.hansson@arm.com 5388981Sandreas.hansson@arm.com // reset the sampled values 5398981Sandreas.hansson@arm.com stats.readTrans = 0; 5408981Sandreas.hansson@arm.com stats.writeTrans = 0; 5418981Sandreas.hansson@arm.com 5428981Sandreas.hansson@arm.com stats.readBytes = 0; 5438981Sandreas.hansson@arm.com stats.writtenBytes = 0; 5448981Sandreas.hansson@arm.com 5458981Sandreas.hansson@arm.com schedule(samplePeriodicEvent, curTick() + samplePeriodTicks); 5468981Sandreas.hansson@arm.com} 5478981Sandreas.hansson@arm.com 5488981Sandreas.hansson@arm.comvoid 5498981Sandreas.hansson@arm.comCommMonitor::startup() 5508981Sandreas.hansson@arm.com{ 5518981Sandreas.hansson@arm.com schedule(samplePeriodicEvent, curTick() + samplePeriodTicks); 5528981Sandreas.hansson@arm.com} 553