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/* $Id: tstSupTscDelta.cpp $ */
/** @file
* SUP Testcase - Global Info Page TSC Delta Measurement Utility.
*/
/*
* Copyright (C) 2015-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <VBox/sup.h>
#include <iprt/errcore.h>
#include <iprt/assert.h>
#include <iprt/stream.h>
#include <iprt/string.h>
#include <iprt/getopt.h>
#include <iprt/test.h>
#include <iprt/thread.h>
int main(int argc, char **argv)
{
RTTEST hTest;
RTEXITCODE rcExit = RTTestInitExAndCreate(argc, &argv, 0 /*fRtInit*/, "tstSupTscDelta", &hTest);
if (rcExit != RTEXITCODE_SUCCESS)
return rcExit;
/*
* Parse args
*/
static const RTGETOPTDEF g_aOptions[] =
{
{ "--iterations", 'i', RTGETOPT_REQ_INT32 },
{ "--delay", 'd', RTGETOPT_REQ_INT32 },
};
uint32_t cIterations = 0; /* Currently 0 so that it doesn't upset testing. */
uint32_t cMsSleepBetweenIterations = 10;
int ch;
RTGETOPTUNION ValueUnion;
RTGETOPTSTATE GetState;
RTGetOptInit(&GetState, argc, argv, g_aOptions, RT_ELEMENTS(g_aOptions), 1, RTGETOPTINIT_FLAGS_NO_STD_OPTS);
while ((ch = RTGetOpt(&GetState, &ValueUnion)))
{
switch (ch)
{
case 'd':
cMsSleepBetweenIterations = ValueUnion.u32;
break;
case 'i':
cIterations = ValueUnion.u32;
break;
default:
return RTGetOptPrintError(ch, &ValueUnion);
}
}
if (!cIterations)
return RTTestSkipAndDestroy(hTest, "Nothing to do. The --iterations argument is 0 or not given.");
/*
* Init
*/
PSUPDRVSESSION pSession = NIL_RTR0PTR;
int rc = SUPR3Init(&pSession);
if (RT_SUCCESS(rc))
{
PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage;
if (pGip)
{
if (pGip->enmUseTscDelta < SUPGIPUSETSCDELTA_PRACTICALLY_ZERO)
return RTTestSkipAndDestroy(hTest, "No deltas to play with: enmUseTscDelta=%d\n", pGip->enmUseTscDelta);
/*
* Init stats.
*/
struct
{
int64_t iLowest;
int64_t iHighest;
int64_t iTotal;
uint64_t uAbsMin;
uint64_t uAbsMax;
uint64_t uAbsTotal;
} aCpuStats[RTCPUSET_MAX_CPUS];
RT_ZERO(aCpuStats);
for (uint32_t i = 0; i < pGip->cCpus; i++)
{
aCpuStats[i].iLowest = INT64_MAX;
aCpuStats[i].iHighest = INT64_MIN;
aCpuStats[i].uAbsMin = UINT64_MAX;
}
/*
* Do the work.
*/
for (uint32_t iIteration = 0; ; iIteration++)
{
/*
* Display the current deltas and gather statistics.
*/
RTPrintf("tstSupTscDelta: Iteration #%u results:", iIteration);
for (uint32_t iCpu = 0; iCpu < pGip->cCpus; iCpu++)
{
int64_t iTscDelta = pGip->aCPUs[iCpu].i64TSCDelta;
/* print */
if ((iCpu % 4) == 0)
RTPrintf("\ntstSupTscDelta:");
if (pGip->aCPUs[iCpu].enmState != SUPGIPCPUSTATE_ONLINE)
RTPrintf(" %02x: offline ", iCpu);
else if (iTscDelta != INT64_MAX)
RTPrintf(" %02x: %-12lld", iCpu, iTscDelta);
else
RTPrintf(" %02x: INT64_MAX ", iCpu);
/* stats */
if ( iTscDelta != INT64_MAX
&& pGip->aCPUs[iCpu].enmState == SUPGIPCPUSTATE_ONLINE)
{
if (aCpuStats[iCpu].iLowest > iTscDelta)
aCpuStats[iCpu].iLowest = iTscDelta;
if (aCpuStats[iCpu].iHighest < iTscDelta)
aCpuStats[iCpu].iHighest = iTscDelta;
aCpuStats[iCpu].iTotal += iTscDelta;
uint64_t uAbsTscDelta = iTscDelta >= 0 ? (uint64_t)iTscDelta : (uint64_t)-iTscDelta;
if (aCpuStats[iCpu].uAbsMin > uAbsTscDelta)
aCpuStats[iCpu].uAbsMin = uAbsTscDelta;
if (aCpuStats[iCpu].uAbsMax < uAbsTscDelta)
aCpuStats[iCpu].uAbsMax = uAbsTscDelta;
aCpuStats[iCpu].uAbsTotal += uAbsTscDelta;
}
}
if (((pGip->cCpus - 1) % 4) != 0)
RTPrintf("\n");
/*
* Done?
*/
if (iIteration + 1 >= cIterations)
break;
/*
* Force a new measurement.
*/
RTThreadSleep(cMsSleepBetweenIterations);
for (uint32_t iCpu = 0; iCpu < pGip->cCpus; iCpu++)
if (pGip->aCPUs[iCpu].enmState == SUPGIPCPUSTATE_ONLINE)
{
rc = SUPR3TscDeltaMeasure(pGip->aCPUs[iCpu].idCpu, false /*fAsync*/, true /*fForce*/, 64, 16 /*ms*/);
if (RT_FAILURE(rc))
RTTestFailed(hTest, "SUPR3TscDeltaMeasure failed on %#x: %Rrc", pGip->aCPUs[iCpu].idCpu, rc);
}
}
/*
* Display statistics that we've gathered.
*/
RTPrintf("tstSupTscDelta: Results:\n");
int64_t iLowest = INT64_MAX;
int64_t iHighest = INT64_MIN;
int64_t iTotal = 0;
uint32_t cTotal = 0;
for (uint32_t iCpu = 0; iCpu < pGip->cCpus; iCpu++)
{
if (pGip->aCPUs[iCpu].enmState != SUPGIPCPUSTATE_ONLINE)
RTPrintf("tstSupTscDelta: %02x: offline\n", iCpu);
else
{
RTPrintf("tstSupTscDelta: %02x: lowest=%-12lld highest=%-12lld average=%-12lld spread=%-12lld\n",
iCpu,
aCpuStats[iCpu].iLowest,
aCpuStats[iCpu].iHighest,
aCpuStats[iCpu].iTotal / cIterations,
aCpuStats[iCpu].iHighest - aCpuStats[iCpu].iLowest);
RTPrintf( "tstSupTscDelta: absmin=%-12llu absmax=%-12llu absavg=%-12llu idCpu=%#4x idApic=%#4x\n",
aCpuStats[iCpu].uAbsMin,
aCpuStats[iCpu].uAbsMax,
aCpuStats[iCpu].uAbsTotal / cIterations,
pGip->aCPUs[iCpu].idCpu,
pGip->aCPUs[iCpu].idApic);
if (iLowest > aCpuStats[iCpu].iLowest)
iLowest = aCpuStats[iCpu].iLowest;
if (iHighest < aCpuStats[iCpu].iHighest)
iHighest = aCpuStats[iCpu].iHighest;
iTotal += aCpuStats[iCpu].iHighest;
cTotal += cIterations;
}
}
RTPrintf("tstSupTscDelta: all: lowest=%-12lld highest=%-12lld average=%-12lld spread=%-12lld\n",
iLowest, iHighest, iTotal / cTotal, iHighest - iLowest);
}
else
RTTestFailed(hTest, "g_pSUPGlobalInfoPage is NULL");
SUPR3Term(false /*fForced*/);
}
else
RTTestFailed(hTest, "SUPR3Init failed: %Rrc", rc);
return RTTestSummaryAndDestroy(hTest);
}
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