[54287] | 1 | /* $Id: tstSupTscDelta.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * SUP Testcase - Global Info Page TSC Delta Measurement Utility.
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| 4 | */
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| 5 |
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| 6 | /*
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[98103] | 7 | * Copyright (C) 2015-2023 Oracle and/or its affiliates.
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[54287] | 8 | *
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[96407] | 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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[54287] | 11 | *
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[96407] | 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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[54287] | 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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[96407] | 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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[54287] | 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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[96407] | 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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[54287] | 35 | */
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| 36 |
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[57358] | 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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[54287] | 41 | #include <VBox/sup.h>
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[76474] | 42 | #include <iprt/errcore.h>
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[54287] | 43 | #include <iprt/assert.h>
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| 44 | #include <iprt/stream.h>
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| 45 | #include <iprt/string.h>
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| 46 | #include <iprt/getopt.h>
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| 47 | #include <iprt/test.h>
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| 48 | #include <iprt/thread.h>
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| 49 |
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| 50 |
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| 51 |
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| 52 | int main(int argc, char **argv)
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| 53 | {
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| 54 | RTTEST hTest;
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| 55 | RTEXITCODE rcExit = RTTestInitExAndCreate(argc, &argv, 0 /*fRtInit*/, "tstSupTscDelta", &hTest);
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| 56 | if (rcExit != RTEXITCODE_SUCCESS)
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| 57 | return rcExit;
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| 58 |
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| 59 | /*
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| 60 | * Parse args
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| 61 | */
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| 62 | static const RTGETOPTDEF g_aOptions[] =
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| 63 | {
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| 64 | { "--iterations", 'i', RTGETOPT_REQ_INT32 },
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[54346] | 65 | { "--delay", 'd', RTGETOPT_REQ_INT32 },
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[54287] | 66 | };
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| 67 |
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| 68 | uint32_t cIterations = 0; /* Currently 0 so that it doesn't upset testing. */
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[54288] | 69 | uint32_t cMsSleepBetweenIterations = 10;
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[54287] | 70 |
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| 71 | int ch;
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| 72 | RTGETOPTUNION ValueUnion;
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| 73 | RTGETOPTSTATE GetState;
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| 74 | RTGetOptInit(&GetState, argc, argv, g_aOptions, RT_ELEMENTS(g_aOptions), 1, RTGETOPTINIT_FLAGS_NO_STD_OPTS);
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| 75 | while ((ch = RTGetOpt(&GetState, &ValueUnion)))
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| 76 | {
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| 77 | switch (ch)
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| 78 | {
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[54346] | 79 | case 'd':
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| 80 | cMsSleepBetweenIterations = ValueUnion.u32;
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| 81 | break;
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[54287] | 82 | case 'i':
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| 83 | cIterations = ValueUnion.u32;
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| 84 | break;
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| 85 |
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| 86 | default:
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| 87 | return RTGetOptPrintError(ch, &ValueUnion);
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| 88 | }
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| 89 | }
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| 90 | if (!cIterations)
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| 91 | return RTTestSkipAndDestroy(hTest, "Nothing to do. The --iterations argument is 0 or not given.");
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| 92 |
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| 93 | /*
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| 94 | * Init
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| 95 | */
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| 96 | PSUPDRVSESSION pSession = NIL_RTR0PTR;
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| 97 | int rc = SUPR3Init(&pSession);
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| 98 | if (RT_SUCCESS(rc))
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| 99 | {
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| 100 | PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage;
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| 101 | if (pGip)
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| 102 | {
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| 103 | if (pGip->enmUseTscDelta < SUPGIPUSETSCDELTA_PRACTICALLY_ZERO)
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| 104 | return RTTestSkipAndDestroy(hTest, "No deltas to play with: enmUseTscDelta=%d\n", pGip->enmUseTscDelta);
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| 105 |
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[54288] | 106 | /*
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| 107 | * Init stats.
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| 108 | */
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[54287] | 109 | struct
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| 110 | {
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| 111 | int64_t iLowest;
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| 112 | int64_t iHighest;
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| 113 | int64_t iTotal;
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| 114 | uint64_t uAbsMin;
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| 115 | uint64_t uAbsMax;
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| 116 | uint64_t uAbsTotal;
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| 117 | } aCpuStats[RTCPUSET_MAX_CPUS];
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| 118 | RT_ZERO(aCpuStats);
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[54288] | 119 | for (uint32_t i = 0; i < pGip->cCpus; i++)
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| 120 | {
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[54320] | 121 | aCpuStats[i].iLowest = INT64_MAX;
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| 122 | aCpuStats[i].iHighest = INT64_MIN;
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| 123 | aCpuStats[i].uAbsMin = UINT64_MAX;
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[54288] | 124 | }
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[54287] | 125 |
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[54288] | 126 | /*
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| 127 | * Do the work.
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| 128 | */
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[54287] | 129 | for (uint32_t iIteration = 0; ; iIteration++)
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| 130 | {
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| 131 | /*
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| 132 | * Display the current deltas and gather statistics.
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| 133 | */
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| 134 | RTPrintf("tstSupTscDelta: Iteration #%u results:", iIteration);
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| 135 | for (uint32_t iCpu = 0; iCpu < pGip->cCpus; iCpu++)
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| 136 | {
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| 137 | int64_t iTscDelta = pGip->aCPUs[iCpu].i64TSCDelta;
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| 138 |
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| 139 | /* print */
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| 140 | if ((iCpu % 4) == 0)
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| 141 | RTPrintf("\ntstSupTscDelta:");
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| 142 | if (pGip->aCPUs[iCpu].enmState != SUPGIPCPUSTATE_ONLINE)
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[56740] | 143 | RTPrintf(" %02x: offline ", iCpu);
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[54287] | 144 | else if (iTscDelta != INT64_MAX)
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| 145 | RTPrintf(" %02x: %-12lld", iCpu, iTscDelta);
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| 146 | else
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| 147 | RTPrintf(" %02x: INT64_MAX ", iCpu);
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| 148 |
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| 149 | /* stats */
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| 150 | if ( iTscDelta != INT64_MAX
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| 151 | && pGip->aCPUs[iCpu].enmState == SUPGIPCPUSTATE_ONLINE)
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| 152 | {
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| 153 | if (aCpuStats[iCpu].iLowest > iTscDelta)
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| 154 | aCpuStats[iCpu].iLowest = iTscDelta;
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| 155 | if (aCpuStats[iCpu].iHighest < iTscDelta)
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| 156 | aCpuStats[iCpu].iHighest = iTscDelta;
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| 157 | aCpuStats[iCpu].iTotal += iTscDelta;
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| 158 |
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| 159 | uint64_t uAbsTscDelta = iTscDelta >= 0 ? (uint64_t)iTscDelta : (uint64_t)-iTscDelta;
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| 160 | if (aCpuStats[iCpu].uAbsMin > uAbsTscDelta)
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| 161 | aCpuStats[iCpu].uAbsMin = uAbsTscDelta;
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| 162 | if (aCpuStats[iCpu].uAbsMax < uAbsTscDelta)
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| 163 | aCpuStats[iCpu].uAbsMax = uAbsTscDelta;
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| 164 | aCpuStats[iCpu].uAbsTotal += uAbsTscDelta;
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| 165 | }
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| 166 | }
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| 167 | if (((pGip->cCpus - 1) % 4) != 0)
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| 168 | RTPrintf("\n");
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| 169 |
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| 170 | /*
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| 171 | * Done?
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| 172 | */
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| 173 | if (iIteration + 1 >= cIterations)
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| 174 | break;
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| 175 |
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| 176 | /*
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| 177 | * Force a new measurement.
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| 178 | */
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[54288] | 179 | RTThreadSleep(cMsSleepBetweenIterations);
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[54287] | 180 | for (uint32_t iCpu = 0; iCpu < pGip->cCpus; iCpu++)
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| 181 | if (pGip->aCPUs[iCpu].enmState == SUPGIPCPUSTATE_ONLINE)
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| 182 | {
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[54306] | 183 | rc = SUPR3TscDeltaMeasure(pGip->aCPUs[iCpu].idCpu, false /*fAsync*/, true /*fForce*/, 64, 16 /*ms*/);
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[54287] | 184 | if (RT_FAILURE(rc))
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| 185 | RTTestFailed(hTest, "SUPR3TscDeltaMeasure failed on %#x: %Rrc", pGip->aCPUs[iCpu].idCpu, rc);
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| 186 | }
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| 187 | }
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| 188 |
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| 189 | /*
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| 190 | * Display statistics that we've gathered.
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| 191 | */
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| 192 | RTPrintf("tstSupTscDelta: Results:\n");
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[54320] | 193 | int64_t iLowest = INT64_MAX;
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| 194 | int64_t iHighest = INT64_MIN;
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[54287] | 195 | int64_t iTotal = 0;
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| 196 | uint32_t cTotal = 0;
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| 197 | for (uint32_t iCpu = 0; iCpu < pGip->cCpus; iCpu++)
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| 198 | {
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| 199 | if (pGip->aCPUs[iCpu].enmState != SUPGIPCPUSTATE_ONLINE)
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| 200 | RTPrintf("tstSupTscDelta: %02x: offline\n", iCpu);
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| 201 | else
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| 202 | {
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| 203 | RTPrintf("tstSupTscDelta: %02x: lowest=%-12lld highest=%-12lld average=%-12lld spread=%-12lld\n",
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| 204 | iCpu,
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| 205 | aCpuStats[iCpu].iLowest,
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| 206 | aCpuStats[iCpu].iHighest,
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| 207 | aCpuStats[iCpu].iTotal / cIterations,
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| 208 | aCpuStats[iCpu].iHighest - aCpuStats[iCpu].iLowest);
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[54288] | 209 | RTPrintf( "tstSupTscDelta: absmin=%-12llu absmax=%-12llu absavg=%-12llu idCpu=%#4x idApic=%#4x\n",
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[54287] | 210 | aCpuStats[iCpu].uAbsMin,
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| 211 | aCpuStats[iCpu].uAbsMax,
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[54288] | 212 | aCpuStats[iCpu].uAbsTotal / cIterations,
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| 213 | pGip->aCPUs[iCpu].idCpu,
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| 214 | pGip->aCPUs[iCpu].idApic);
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[54287] | 215 | if (iLowest > aCpuStats[iCpu].iLowest)
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| 216 | iLowest = aCpuStats[iCpu].iLowest;
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| 217 | if (iHighest < aCpuStats[iCpu].iHighest)
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| 218 | iHighest = aCpuStats[iCpu].iHighest;
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| 219 | iTotal += aCpuStats[iCpu].iHighest;
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| 220 | cTotal += cIterations;
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| 221 | }
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| 222 | }
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| 223 | RTPrintf("tstSupTscDelta: all: lowest=%-12lld highest=%-12lld average=%-12lld spread=%-12lld\n",
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| 224 | iLowest, iHighest, iTotal / cTotal, iHighest - iLowest);
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| 225 | }
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| 226 | else
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| 227 | RTTestFailed(hTest, "g_pSUPGlobalInfoPage is NULL");
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| 228 |
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| 229 | SUPR3Term(false /*fForced*/);
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| 230 | }
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| 231 | else
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| 232 | RTTestFailed(hTest, "SUPR3Init failed: %Rrc", rc);
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| 233 | return RTTestSummaryAndDestroy(hTest);
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| 234 | }
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| 235 |
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