VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/testcase/tstGIP-2.cpp@ 54998

Last change on this file since 54998 was 54352, checked in by vboxsync, 10 years ago

SUPDrv,TM: Overhauled the CPU/TSC frequency a little, making it possible to run it early and skpping the 200 ms variant for the invariant tsc by executing the refinement timer several times.
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File size: 11.5 KB
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1/* $Id: tstGIP-2.cpp 54352 2015-02-22 01:32:45Z vboxsync $ */
2/** @file
3 * SUP Testcase - Global Info Page interface (ring 3).
4 */
5
6/*
7 * Copyright (C) 2006-2014 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27/*******************************************************************************
28* Header Files *
29*******************************************************************************/
30#include <VBox/sup.h>
31#include <VBox/err.h>
32#include <VBox/param.h>
33#include <iprt/asm.h>
34#include <iprt/assert.h>
35#include <iprt/alloc.h>
36#include <iprt/thread.h>
37#include <iprt/stream.h>
38#include <iprt/string.h>
39#include <iprt/initterm.h>
40#include <iprt/getopt.h>
41#include <iprt/x86.h>
42
43
44/**
45 * Checks whether the CPU advertises an invariant TSC or not.
46 *
47 * @returns true if invariant, false otherwise.
48 */
49bool tstIsInvariantTsc(void)
50{
51 if (ASMHasCpuId())
52 {
53 uint32_t uEax, uEbx, uEcx, uEdx;
54 ASMCpuId(0x80000000, &uEax, &uEbx, &uEcx, &uEdx);
55 if (uEax >= 0x80000007)
56 {
57 ASMCpuId(0x80000007, &uEax, &uEbx, &uEcx, &uEdx);
58 if (uEdx & X86_CPUID_AMD_ADVPOWER_EDX_TSCINVAR)
59 return true;
60 }
61 }
62 return false;
63}
64
65
66int main(int argc, char **argv)
67{
68 RTR3InitExe(argc, &argv, 0);
69
70 /*
71 * Parse args
72 */
73 static const RTGETOPTDEF g_aOptions[] =
74 {
75 { "--iterations", 'i', RTGETOPT_REQ_INT32 },
76 { "--hex", 'h', RTGETOPT_REQ_NOTHING },
77 { "--decimal", 'd', RTGETOPT_REQ_NOTHING },
78 { "--spin", 's', RTGETOPT_REQ_NOTHING },
79 { "--reference", 'r', RTGETOPT_REQ_UINT64 }, /* reference value of CpuHz, display the
80 * CpuHz deviation in a separate column. */
81 };
82
83 uint32_t cIterations = 40;
84 bool fHex = true;
85 bool fSpin = false;
86 int ch;
87 uint64_t uCpuHzRef = 0;
88 uint64_t uCpuHzOverallDeviation = 0;
89 int64_t iCpuHzMaxDeviation = 0;
90 int32_t cCpuHzOverallDevCnt = 0;
91 RTGETOPTUNION ValueUnion;
92 RTGETOPTSTATE GetState;
93 RTGetOptInit(&GetState, argc, argv, g_aOptions, RT_ELEMENTS(g_aOptions), 1, RTGETOPTINIT_FLAGS_NO_STD_OPTS);
94 while ((ch = RTGetOpt(&GetState, &ValueUnion)))
95 {
96 switch (ch)
97 {
98 case 'i':
99 cIterations = ValueUnion.u32;
100 break;
101
102 case 'd':
103 fHex = false;
104 break;
105
106 case 'h':
107 fHex = true;
108 break;
109
110 case 's':
111 fSpin = true;
112 break;
113
114 case 'r':
115 uCpuHzRef = ValueUnion.u64;
116 break;
117
118 default:
119 return RTGetOptPrintError(ch, &ValueUnion);
120 }
121 }
122
123 /*
124 * Init
125 */
126 PSUPDRVSESSION pSession = NIL_RTR0PTR;
127 int rc = SUPR3Init(&pSession);
128 if (RT_SUCCESS(rc))
129 {
130 if (g_pSUPGlobalInfoPage)
131 {
132 RTPrintf("tstGIP-2: cCpus=%d u32UpdateHz=%RU32 u32UpdateIntervalNS=%RU32 u64NanoTSLastUpdateHz=%RX64 u64CpuHz=%RU64 uCpuHzRef=%RU64 u32Mode=%d (%s) u32Version=%#x\n",
133 g_pSUPGlobalInfoPage->cCpus,
134 g_pSUPGlobalInfoPage->u32UpdateHz,
135 g_pSUPGlobalInfoPage->u32UpdateIntervalNS,
136 g_pSUPGlobalInfoPage->u64NanoTSLastUpdateHz,
137 g_pSUPGlobalInfoPage->u64CpuHz,
138 uCpuHzRef,
139 g_pSUPGlobalInfoPage->u32Mode,
140 SUPGetGIPModeName(g_pSUPGlobalInfoPage),
141 g_pSUPGlobalInfoPage->u32Version);
142 RTPrintf(fHex
143 ? "tstGIP-2: it: u64NanoTS delta u64TSC UpIntTSC H TransId CpuHz %sTSC Interval History...\n"
144 : "tstGIP-2: it: u64NanoTS delta u64TSC UpIntTSC H TransId CpuHz %sTSC Interval History...\n",
145 uCpuHzRef ? " CpuHz deviation " : "");
146 static SUPGIPCPU s_aaCPUs[2][256];
147 for (uint32_t i = 0; i < cIterations; i++)
148 {
149 /* copy the data */
150 memcpy(&s_aaCPUs[i & 1][0], &g_pSUPGlobalInfoPage->aCPUs[0], g_pSUPGlobalInfoPage->cCpus * sizeof(g_pSUPGlobalInfoPage->aCPUs[0]));
151
152 /* display it & find something to spin on. */
153 uint32_t u32TransactionId = 0;
154 uint32_t volatile *pu32TransactionId = NULL;
155 for (unsigned iCpu = 0; iCpu < g_pSUPGlobalInfoPage->cCpus; iCpu++)
156 if (g_pSUPGlobalInfoPage->aCPUs[iCpu].enmState == SUPGIPCPUSTATE_ONLINE)
157 {
158 char szCpuHzDeviation[32];
159 PSUPGIPCPU pPrevCpu = &s_aaCPUs[!(i & 1)][iCpu];
160 PSUPGIPCPU pCpu = &s_aaCPUs[i & 1][iCpu];
161 if (uCpuHzRef)
162 {
163 int64_t iCpuHzDeviation = pCpu->u64CpuHz - uCpuHzRef;
164 uint64_t uCpuHzDeviation = RT_ABS(iCpuHzDeviation);
165 if (uCpuHzDeviation > 999999999)
166 RTStrPrintf(szCpuHzDeviation, sizeof(szCpuHzDeviation), "%17s ", "?");
167 else
168 {
169 /* Wait until the history validation code takes effect. */
170 if (pCpu->u32TransactionId > 23 + (8 * 2) + 1)
171 {
172 if (RT_ABS(iCpuHzDeviation) > RT_ABS(iCpuHzMaxDeviation))
173 iCpuHzMaxDeviation = iCpuHzDeviation;
174 uCpuHzOverallDeviation += uCpuHzDeviation;
175 cCpuHzOverallDevCnt++;
176 }
177 uint32_t uPct = (uint32_t)(uCpuHzDeviation * 100000 / uCpuHzRef + 5);
178 RTStrPrintf(szCpuHzDeviation, sizeof(szCpuHzDeviation), "%10RI64%3d.%02d%% ",
179 iCpuHzDeviation, uPct / 1000, (uPct % 1000) / 10);
180 }
181 }
182 else
183 szCpuHzDeviation[0] = '\0';
184 RTPrintf(fHex
185 ? "tstGIP-2: %4d/%d: %016llx %09llx %016llx %08x %d %08x %15llu %s%08x %08x %08x %08x %08x %08x %08x %08x (%d)\n"
186 : "tstGIP-2: %4d/%d: %016llu %09llu %016llu %010u %d %010u %15llu %s%08x %08x %08x %08x %08x %08x %08x %08x (%d)\n",
187 i, iCpu,
188 pCpu->u64NanoTS,
189 i ? pCpu->u64NanoTS - pPrevCpu->u64NanoTS : 0,
190 pCpu->u64TSC,
191 pCpu->u32UpdateIntervalTSC,
192 pCpu->iTSCHistoryHead,
193 pCpu->u32TransactionId,
194 pCpu->u64CpuHz,
195 szCpuHzDeviation,
196 pCpu->au32TSCHistory[0],
197 pCpu->au32TSCHistory[1],
198 pCpu->au32TSCHistory[2],
199 pCpu->au32TSCHistory[3],
200 pCpu->au32TSCHistory[4],
201 pCpu->au32TSCHistory[5],
202 pCpu->au32TSCHistory[6],
203 pCpu->au32TSCHistory[7],
204 pCpu->cErrors);
205 if (!pu32TransactionId)
206 {
207 pu32TransactionId = &g_pSUPGlobalInfoPage->aCPUs[iCpu].u32TransactionId;
208 u32TransactionId = pCpu->u32TransactionId;
209 }
210 }
211
212 /* wait a bit / spin */
213 if (!fSpin)
214 RTThreadSleep(9);
215 else
216 {
217 if (pu32TransactionId)
218 {
219 uint32_t uTmp;
220 while ( u32TransactionId == (uTmp = *pu32TransactionId)
221 || (uTmp & 1))
222 ASMNopPause();
223 }
224 else
225 RTThreadSleep(1);
226 }
227 }
228
229 /*
230 * Display TSC deltas.
231 *
232 * First iterative over the APIC ID array to get mostly consistent CPUID to APIC ID mapping.
233 * Then iterate over the offline CPUs. It is possible that there's a race between the online/offline
234 * states between the two iterations, but that cannot be helped from ring-3 anyway and not a biggie.
235 */
236 RTPrintf("tstGIP-2: TSC deltas:\n");
237 RTPrintf("tstGIP-2: idApic: i64TSCDelta\n");
238 for (unsigned i = 0; i < RT_ELEMENTS(g_pSUPGlobalInfoPage->aiCpuFromApicId); i++)
239 {
240 uint16_t iCpu = g_pSUPGlobalInfoPage->aiCpuFromApicId[i];
241 if (iCpu != UINT16_MAX)
242 {
243 RTPrintf("tstGIP-2: %7d: %lld\n", g_pSUPGlobalInfoPage->aCPUs[iCpu].idApic,
244 g_pSUPGlobalInfoPage->aCPUs[iCpu].i64TSCDelta);
245 }
246 }
247
248 for (unsigned iCpu = 0; iCpu < g_pSUPGlobalInfoPage->cCpus; iCpu++)
249 if (g_pSUPGlobalInfoPage->aCPUs[iCpu].idApic == UINT16_MAX)
250 RTPrintf("tstGIP-2: offline: %lld\n", g_pSUPGlobalInfoPage->aCPUs[iCpu].i64TSCDelta);
251
252 RTPrintf("tstGIP-2: enmUseTscDelta=%d fGetGipCpu=%#x\n",
253 g_pSUPGlobalInfoPage->enmUseTscDelta, g_pSUPGlobalInfoPage->fGetGipCpu);
254 if ( uCpuHzRef
255 && cCpuHzOverallDevCnt)
256 {
257 uint32_t uPct = (uint32_t)(uCpuHzOverallDeviation * 100000 / cCpuHzOverallDevCnt / uCpuHzRef + 5);
258 RTPrintf("tstGIP-2: Average CpuHz deviation: %d.%02d%%\n",
259 uPct / 1000, (uPct % 1000) / 10);
260
261 uint32_t uMaxPct = (uint32_t)(RT_ABS(iCpuHzMaxDeviation) * 100000 / uCpuHzRef + 5);
262 RTPrintf("tstGIP-2: Maximum CpuHz deviation: %d.%02d%% (%RI64 ticks)\n",
263 uMaxPct / 1000, (uMaxPct % 1000) / 10, iCpuHzMaxDeviation);
264 }
265 }
266 else
267 {
268 RTPrintf("tstGIP-2: g_pSUPGlobalInfoPage is NULL\n");
269 rc = -1;
270 }
271
272 SUPR3Term(false /*fForced*/);
273 }
274 else
275 RTPrintf("tstGIP-2: SUPR3Init failed: %Rrc\n", rc);
276 return !!rc;
277}
278
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