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-rw-r--r--indra/llcommon/llsys.cpp714
1 files changed, 678 insertions, 36 deletions
diff --git a/indra/llcommon/llsys.cpp b/indra/llcommon/llsys.cpp
index b4e448ffbd..99e61433c6 100644
--- a/indra/llcommon/llsys.cpp
+++ b/indra/llcommon/llsys.cpp
@@ -1,6 +1,6 @@
/**
* @file llsys.cpp
- * @brief Impelementation of the basic system query functions.
+ * @brief Implementation of the basic system query functions.
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
@@ -24,6 +24,10 @@
* $/LicenseInfo$
*/
+#if LL_WINDOWS
+#pragma warning (disable : 4355) // 'this' used in initializer list: yes, intentionally
+#endif
+
#include "linden_common.h"
#include "llsys.h"
@@ -36,22 +40,43 @@
#endif
#include "llprocessor.h"
+#include "llerrorcontrol.h"
+#include "llevents.h"
+#include "lltimer.h"
+#include "llsdserialize.h"
+#include "llsdutil.h"
+#include <boost/bind.hpp>
+#include <boost/circular_buffer.hpp>
+#include <boost/regex.hpp>
+#include <boost/foreach.hpp>
+#include <boost/lexical_cast.hpp>
+#include <boost/range.hpp>
+#include <boost/utility/enable_if.hpp>
+#include <boost/type_traits/is_integral.hpp>
+#include <boost/type_traits/is_float.hpp>
+
+using namespace llsd;
#if LL_WINDOWS
# define WIN32_LEAN_AND_MEAN
# include <winsock2.h>
# include <windows.h>
+# include <psapi.h> // GetPerformanceInfo() et al.
#elif LL_DARWIN
# include <errno.h>
# include <sys/sysctl.h>
# include <sys/utsname.h>
# include <stdint.h>
# include <Carbon/Carbon.h>
+# include <sys/wait.h>
+# include <string.h>
+# include <stdexcept>
#elif LL_LINUX
# include <errno.h>
# include <sys/utsname.h>
# include <unistd.h>
# include <sys/sysinfo.h>
+# include <stdexcept>
const char MEMINFO_FILE[] = "/proc/meminfo";
#elif LL_SOLARIS
# include <stdio.h>
@@ -70,6 +95,15 @@ extern int errno;
static const S32 CPUINFO_BUFFER_SIZE = 16383;
LLCPUInfo gSysCPU;
+// Don't log memory info any more often than this. It also serves as our
+// framerate sample size.
+static const F32 MEM_INFO_THROTTLE = 20;
+// Sliding window of samples. We intentionally limit the length of time we
+// remember "the slowest" framerate because framerate is very slow at login.
+// If we only triggered FrameWatcher logging when the session framerate
+// dropped below the login framerate, we'd have very little additional data.
+static const F32 MEM_INFO_WINDOW = 10*60;
+
#if LL_WINDOWS
#ifndef DLLVERSIONINFO
typedef struct _DllVersionInfo
@@ -613,8 +647,78 @@ void LLCPUInfo::stream(std::ostream& s) const
s << "->mCPUString: " << mCPUString << std::endl;
}
+// Helper class for LLMemoryInfo: accumulate stats in the form we store for
+// LLMemoryInfo::getStatsMap().
+class Stats
+{
+public:
+ Stats():
+ mStats(LLSD::emptyMap())
+ {}
+
+ // Store every integer type as LLSD::Integer.
+ template <class T>
+ void add(const LLSD::String& name, const T& value,
+ typename boost::enable_if<boost::is_integral<T> >::type* = 0)
+ {
+ mStats[name] = LLSD::Integer(value);
+ }
+
+ // Store every floating-point type as LLSD::Real.
+ template <class T>
+ void add(const LLSD::String& name, const T& value,
+ typename boost::enable_if<boost::is_float<T> >::type* = 0)
+ {
+ mStats[name] = LLSD::Real(value);
+ }
+
+ // Hope that LLSD::Date values are sufficiently unambiguous.
+ void add(const LLSD::String& name, const LLSD::Date& value)
+ {
+ mStats[name] = value;
+ }
+
+ LLSD get() const { return mStats; }
+
+private:
+ LLSD mStats;
+};
+
+// Wrap boost::regex_match() with a function that doesn't throw.
+template <typename S, typename M, typename R>
+static bool regex_match_no_exc(const S& string, M& match, const R& regex)
+{
+ try
+ {
+ return boost::regex_match(string, match, regex);
+ }
+ catch (const std::runtime_error& e)
+ {
+ LL_WARNS("LLMemoryInfo") << "error matching with '" << regex.str() << "': "
+ << e.what() << ":\n'" << string << "'" << LL_ENDL;
+ return false;
+ }
+}
+
+// Wrap boost::regex_search() with a function that doesn't throw.
+template <typename S, typename M, typename R>
+static bool regex_search_no_exc(const S& string, M& match, const R& regex)
+{
+ try
+ {
+ return boost::regex_search(string, match, regex);
+ }
+ catch (const std::runtime_error& e)
+ {
+ LL_WARNS("LLMemoryInfo") << "error searching with '" << regex.str() << "': "
+ << e.what() << ":\n'" << string << "'" << LL_ENDL;
+ return false;
+ }
+}
+
LLMemoryInfo::LLMemoryInfo()
{
+ refresh();
}
#if LL_WINDOWS
@@ -638,11 +742,7 @@ static U32 LLMemoryAdjustKBResult(U32 inKB)
U32 LLMemoryInfo::getPhysicalMemoryKB() const
{
#if LL_WINDOWS
- MEMORYSTATUSEX state;
- state.dwLength = sizeof(state);
- GlobalMemoryStatusEx(&state);
-
- return LLMemoryAdjustKBResult((U32)(state.ullTotalPhys >> 10));
+ return LLMemoryAdjustKBResult(mStatsMap["Total Physical KB"].asInteger());
#elif LL_DARWIN
// This might work on Linux as well. Someone check...
@@ -687,75 +787,480 @@ U32 LLMemoryInfo::getPhysicalMemoryClamped() const
}
//static
-U32 LLMemoryInfo::getAvailableMemoryKB()
+void LLMemoryInfo::getAvailableMemoryKB(U32& avail_physical_mem_kb, U32& avail_virtual_mem_kb)
{
#if LL_WINDOWS
- MEMORYSTATUSEX state;
- state.dwLength = sizeof(state);
- GlobalMemoryStatusEx(&state);
+ // Sigh, this shouldn't be a static method, then we wouldn't have to
+ // reload this data separately from refresh()
+ LLSD statsMap(loadStatsMap());
+
+ avail_physical_mem_kb = statsMap["Avail Physical KB"].asInteger();
+ avail_virtual_mem_kb = statsMap["Avail Virtual KB"].asInteger();
+
+#elif LL_DARWIN
+ // mStatsMap is derived from vm_stat, look for (e.g.) "kb free":
+ // $ vm_stat
+ // Mach Virtual Memory Statistics: (page size of 4096 bytes)
+ // Pages free: 462078.
+ // Pages active: 142010.
+ // Pages inactive: 220007.
+ // Pages wired down: 159552.
+ // "Translation faults": 220825184.
+ // Pages copy-on-write: 2104153.
+ // Pages zero filled: 167034876.
+ // Pages reactivated: 65153.
+ // Pageins: 2097212.
+ // Pageouts: 41759.
+ // Object cache: 841598 hits of 7629869 lookups (11% hit rate)
+ avail_physical_mem_kb = -1 ;
+ avail_virtual_mem_kb = -1 ;
- return (U32)(state.ullAvailPhys/1024) ;
+#elif LL_LINUX
+ // mStatsMap is derived from MEMINFO_FILE:
+ // $ cat /proc/meminfo
+ // MemTotal: 4108424 kB
+ // MemFree: 1244064 kB
+ // Buffers: 85164 kB
+ // Cached: 1990264 kB
+ // SwapCached: 0 kB
+ // Active: 1176648 kB
+ // Inactive: 1427532 kB
+ // Active(anon): 529152 kB
+ // Inactive(anon): 15924 kB
+ // Active(file): 647496 kB
+ // Inactive(file): 1411608 kB
+ // Unevictable: 16 kB
+ // Mlocked: 16 kB
+ // HighTotal: 3266316 kB
+ // HighFree: 721308 kB
+ // LowTotal: 842108 kB
+ // LowFree: 522756 kB
+ // SwapTotal: 6384632 kB
+ // SwapFree: 6384632 kB
+ // Dirty: 28 kB
+ // Writeback: 0 kB
+ // AnonPages: 528820 kB
+ // Mapped: 89472 kB
+ // Shmem: 16324 kB
+ // Slab: 159624 kB
+ // SReclaimable: 145168 kB
+ // SUnreclaim: 14456 kB
+ // KernelStack: 2560 kB
+ // PageTables: 5560 kB
+ // NFS_Unstable: 0 kB
+ // Bounce: 0 kB
+ // WritebackTmp: 0 kB
+ // CommitLimit: 8438844 kB
+ // Committed_AS: 1271596 kB
+ // VmallocTotal: 122880 kB
+ // VmallocUsed: 65252 kB
+ // VmallocChunk: 52356 kB
+ // HardwareCorrupted: 0 kB
+ // HugePages_Total: 0
+ // HugePages_Free: 0
+ // HugePages_Rsvd: 0
+ // HugePages_Surp: 0
+ // Hugepagesize: 2048 kB
+ // DirectMap4k: 434168 kB
+ // DirectMap2M: 477184 kB
+ // (could also run 'free', but easier to read a file than run a program)
+ avail_physical_mem_kb = -1 ;
+ avail_virtual_mem_kb = -1 ;
#else
//do not know how to collect available memory info for other systems.
//leave it blank here for now.
- return -1;
+ avail_physical_mem_kb = -1 ;
+ avail_virtual_mem_kb = -1 ;
#endif
}
void LLMemoryInfo::stream(std::ostream& s) const
{
+ // We want these memory stats to be easy to grep from the log, along with
+ // the timestamp. So preface each line with the timestamp and a
+ // distinctive marker. Without that, we'd have to search the log for the
+ // introducer line, then read subsequent lines, etc...
+ std::string pfx(LLError::utcTime() + " <mem> ");
+
+ // Max key length
+ size_t key_width(0);
+ BOOST_FOREACH(const MapEntry& pair, inMap(mStatsMap))
+ {
+ size_t len(pair.first.length());
+ if (len > key_width)
+ {
+ key_width = len;
+ }
+ }
+
+ // Now stream stats
+ BOOST_FOREACH(const MapEntry& pair, inMap(mStatsMap))
+ {
+ s << pfx << std::setw(key_width+1) << (pair.first + ':') << ' ';
+ LLSD value(pair.second);
+ if (value.isInteger())
+ s << std::setw(12) << value.asInteger();
+ else if (value.isReal())
+ s << std::fixed << std::setprecision(1) << value.asReal();
+ else if (value.isDate())
+ value.asDate().toStream(s);
+ else
+ s << value; // just use default LLSD formatting
+ s << std::endl;
+ }
+}
+
+LLSD LLMemoryInfo::getStatsMap() const
+{
+ return mStatsMap;
+}
+
+LLMemoryInfo& LLMemoryInfo::refresh()
+{
+ mStatsMap = loadStatsMap();
+
+ LL_DEBUGS("LLMemoryInfo") << "Populated mStatsMap:\n";
+ LLSDSerialize::toPrettyXML(mStatsMap, LL_CONT);
+ LL_ENDL;
+
+ return *this;
+}
+
+LLSD LLMemoryInfo::loadStatsMap()
+{
+ // This implementation is derived from stream() code (as of 2011-06-29).
+ Stats stats;
+
+ // associate timestamp for analysis over time
+ stats.add("timestamp", LLDate::now());
+
#if LL_WINDOWS
MEMORYSTATUSEX state;
state.dwLength = sizeof(state);
GlobalMemoryStatusEx(&state);
- s << "Percent Memory use: " << (U32)state.dwMemoryLoad << '%' << std::endl;
- s << "Total Physical KB: " << (U32)(state.ullTotalPhys/1024) << std::endl;
- s << "Avail Physical KB: " << (U32)(state.ullAvailPhys/1024) << std::endl;
- s << "Total page KB: " << (U32)(state.ullTotalPageFile/1024) << std::endl;
- s << "Avail page KB: " << (U32)(state.ullAvailPageFile/1024) << std::endl;
- s << "Total Virtual KB: " << (U32)(state.ullTotalVirtual/1024) << std::endl;
- s << "Avail Virtual KB: " << (U32)(state.ullAvailVirtual/1024) << std::endl;
+ stats.add("Percent Memory use", state.dwMemoryLoad);
+ stats.add("Total Physical KB", state.ullTotalPhys/1024);
+ stats.add("Avail Physical KB", state.ullAvailPhys/1024);
+ stats.add("Total page KB", state.ullTotalPageFile/1024);
+ stats.add("Avail page KB", state.ullAvailPageFile/1024);
+ stats.add("Total Virtual KB", state.ullTotalVirtual/1024);
+ stats.add("Avail Virtual KB", state.ullAvailVirtual/1024);
+
+ PERFORMANCE_INFORMATION perf;
+ perf.cb = sizeof(perf);
+ GetPerformanceInfo(&perf, sizeof(perf));
+
+ SIZE_T pagekb(perf.PageSize/1024);
+ stats.add("CommitTotal KB", perf.CommitTotal * pagekb);
+ stats.add("CommitLimit KB", perf.CommitLimit * pagekb);
+ stats.add("CommitPeak KB", perf.CommitPeak * pagekb);
+ stats.add("PhysicalTotal KB", perf.PhysicalTotal * pagekb);
+ stats.add("PhysicalAvail KB", perf.PhysicalAvailable * pagekb);
+ stats.add("SystemCache KB", perf.SystemCache * pagekb);
+ stats.add("KernelTotal KB", perf.KernelTotal * pagekb);
+ stats.add("KernelPaged KB", perf.KernelPaged * pagekb);
+ stats.add("KernelNonpaged KB", perf.KernelNonpaged * pagekb);
+ stats.add("PageSize KB", pagekb);
+ stats.add("HandleCount", perf.HandleCount);
+ stats.add("ProcessCount", perf.ProcessCount);
+ stats.add("ThreadCount", perf.ThreadCount);
+
+ PROCESS_MEMORY_COUNTERS_EX pmem;
+ pmem.cb = sizeof(pmem);
+ // GetProcessMemoryInfo() is documented to accept either
+ // PROCESS_MEMORY_COUNTERS* or PROCESS_MEMORY_COUNTERS_EX*, presumably
+ // using the redundant size info to distinguish. But its prototype
+ // specifically accepts PROCESS_MEMORY_COUNTERS*, and since this is a
+ // classic-C API, PROCESS_MEMORY_COUNTERS_EX isn't a subclass. Cast the
+ // pointer.
+ GetProcessMemoryInfo(GetCurrentProcess(), PPROCESS_MEMORY_COUNTERS(&pmem), sizeof(pmem));
+
+ stats.add("Page Fault Count", pmem.PageFaultCount);
+ stats.add("PeakWorkingSetSize KB", pmem.PeakWorkingSetSize/1024);
+ stats.add("WorkingSetSize KB", pmem.WorkingSetSize/1024);
+ stats.add("QutaPeakPagedPoolUsage KB", pmem.QuotaPeakPagedPoolUsage/1024);
+ stats.add("QuotaPagedPoolUsage KB", pmem.QuotaPagedPoolUsage/1024);
+ stats.add("QuotaPeakNonPagedPoolUsage KB", pmem.QuotaPeakNonPagedPoolUsage/1024);
+ stats.add("QuotaNonPagedPoolUsage KB", pmem.QuotaNonPagedPoolUsage/1024);
+ stats.add("PagefileUsage KB", pmem.PagefileUsage/1024);
+ stats.add("PeakPagefileUsage KB", pmem.PeakPagefileUsage/1024);
+ stats.add("PrivateUsage KB", pmem.PrivateUsage/1024);
+
#elif LL_DARWIN
uint64_t phys = 0;
size_t len = sizeof(phys);
- if(sysctlbyname("hw.memsize", &phys, &len, NULL, 0) == 0)
+ if (sysctlbyname("hw.memsize", &phys, &len, NULL, 0) == 0)
{
- s << "Total Physical KB: " << phys/1024 << std::endl;
+ stats.add("Total Physical KB", phys/1024);
}
else
{
- s << "Unable to collect memory information";
+ LL_WARNS("LLMemoryInfo") << "Unable to collect hw.memsize memory information" << LL_ENDL;
+ }
+
+ FILE* pout = popen("vm_stat 2>&1", "r");
+ if (! pout) // popen() couldn't run vm_stat
+ {
+ // Save errno right away.
+ int popen_errno(errno);
+ LL_WARNS("LLMemoryInfo") << "Unable to collect vm_stat memory information: ";
+ char buffer[256];
+ if (0 == strerror_r(popen_errno, buffer, sizeof(buffer)))
+ {
+ LL_CONT << buffer;
+ }
+ else
+ {
+ LL_CONT << "errno " << popen_errno;
+ }
+ LL_CONT << LL_ENDL;
+ }
+ else // popen() launched vm_stat
+ {
+ // Mach Virtual Memory Statistics: (page size of 4096 bytes)
+ // Pages free: 462078.
+ // Pages active: 142010.
+ // Pages inactive: 220007.
+ // Pages wired down: 159552.
+ // "Translation faults": 220825184.
+ // Pages copy-on-write: 2104153.
+ // Pages zero filled: 167034876.
+ // Pages reactivated: 65153.
+ // Pageins: 2097212.
+ // Pageouts: 41759.
+ // Object cache: 841598 hits of 7629869 lookups (11% hit rate)
+
+ // Intentionally don't pass the boost::no_except flag. These
+ // boost::regex objects are constructed with string literals, so they
+ // should be valid every time. If they become invalid, we WANT an
+ // exception, hopefully even before the dev checks in.
+ boost::regex pagesize_rx("\\(page size of ([0-9]+) bytes\\)");
+ boost::regex stat_rx("(.+): +([0-9]+)\\.");
+ boost::regex cache_rx("Object cache: ([0-9]+) hits of ([0-9]+) lookups "
+ "\\(([0-9]+)% hit rate\\)");
+ boost::cmatch matched;
+ LLSD::Integer pagesizekb(4096/1024);
+
+ // Here 'pout' is vm_stat's stdout. Search it for relevant data.
+ char line[100];
+ line[sizeof(line)-1] = '\0';
+ while (fgets(line, sizeof(line)-1, pout))
+ {
+ size_t linelen(strlen(line));
+ // Truncate any trailing newline
+ if (line[linelen - 1] == '\n')
+ {
+ line[--linelen] = '\0';
+ }
+ LL_DEBUGS("LLMemoryInfo") << line << LL_ENDL;
+ if (regex_search_no_exc(line, matched, pagesize_rx))
+ {
+ // "Mach Virtual Memory Statistics: (page size of 4096 bytes)"
+ std::string pagesize_str(matched[1].first, matched[1].second);
+ try
+ {
+ // Reasonable to assume that pagesize will always be a
+ // multiple of 1Kb?
+ pagesizekb = boost::lexical_cast<LLSD::Integer>(pagesize_str)/1024;
+ }
+ catch (const boost::bad_lexical_cast&)
+ {
+ LL_WARNS("LLMemoryInfo") << "couldn't parse '" << pagesize_str
+ << "' in vm_stat line: " << line << LL_ENDL;
+ continue;
+ }
+ stats.add("page size", pagesizekb);
+ }
+ else if (regex_match_no_exc(line, matched, stat_rx))
+ {
+ // e.g. "Pages free: 462078."
+ // Strip double-quotes off certain statistic names
+ const char *key_begin(matched[1].first), *key_end(matched[1].second);
+ if (key_begin[0] == '"' && key_end[-1] == '"')
+ {
+ ++key_begin;
+ --key_end;
+ }
+ LLSD::String key(key_begin, key_end);
+ LLSD::String value_str(matched[2].first, matched[2].second);
+ LLSD::Integer value(0);
+ try
+ {
+ value = boost::lexical_cast<LLSD::Integer>(value_str);
+ }
+ catch (const boost::bad_lexical_cast&)
+ {
+ LL_WARNS("LLMemoryInfo") << "couldn't parse '" << value_str
+ << "' in vm_stat line: " << line << LL_ENDL;
+ continue;
+ }
+ // Store this statistic.
+ stats.add(key, value);
+ // Is this in units of pages? If so, convert to Kb.
+ static const LLSD::String pages("Pages ");
+ if (key.substr(0, pages.length()) == pages)
+ {
+ // Synthesize a new key with kb in place of Pages
+ LLSD::String kbkey("kb ");
+ kbkey.append(key.substr(pages.length()));
+ stats.add(kbkey, value * pagesizekb);
+ }
+ }
+ else if (regex_match_no_exc(line, matched, cache_rx))
+ {
+ // e.g. "Object cache: 841598 hits of 7629869 lookups (11% hit rate)"
+ static const char* cache_keys[] = { "cache hits", "cache lookups", "cache hit%" };
+ std::vector<LLSD::Integer> cache_values;
+ for (size_t i = 0; i < (sizeof(cache_keys)/sizeof(cache_keys[0])); ++i)
+ {
+ LLSD::String value_str(matched[i+1].first, matched[i+1].second);
+ LLSD::Integer value(0);
+ try
+ {
+ value = boost::lexical_cast<LLSD::Integer>(value_str);
+ }
+ catch (boost::bad_lexical_cast&)
+ {
+ LL_WARNS("LLMemoryInfo") << "couldn't parse '" << value_str
+ << "' in vm_stat line: " << line << LL_ENDL;
+ continue;
+ }
+ stats.add(cache_keys[i], value);
+ }
+ }
+ else
+ {
+ LL_WARNS("LLMemoryInfo") << "unrecognized vm_stat line: " << line << LL_ENDL;
+ }
+ }
+ int status(pclose(pout));
+ if (status == -1) // pclose() couldn't retrieve rc
+ {
+ // Save errno right away.
+ int pclose_errno(errno);
+ // The ECHILD error happens so frequently that unless filtered,
+ // the warning below spams the log file. This is too bad, because
+ // sometimes the logic above fails to produce any output derived
+ // from vm_stat, but we've been unable to observe any specific
+ // error indicating the problem.
+ if (pclose_errno != ECHILD)
+ {
+ LL_WARNS("LLMemoryInfo") << "Unable to obtain vm_stat termination code: ";
+ char buffer[256];
+ if (0 == strerror_r(pclose_errno, buffer, sizeof(buffer)))
+ {
+ LL_CONT << buffer;
+ }
+ else
+ {
+ LL_CONT << "errno " << pclose_errno;
+ }
+ LL_CONT << LL_ENDL;
+ }
+ }
+ else // pclose() retrieved rc; analyze
+ {
+ if (WIFEXITED(status))
+ {
+ int rc(WEXITSTATUS(status));
+ if (rc != 0)
+ {
+ LL_WARNS("LLMemoryInfo") << "vm_stat terminated with rc " << rc << LL_ENDL;
+ }
+ }
+ else if (WIFSIGNALED(status))
+ {
+ LL_WARNS("LLMemoryInfo") << "vm_stat terminated by signal " << WTERMSIG(status)
+ << LL_ENDL;
+ }
+ }
}
+
#elif LL_SOLARIS
- U64 phys = 0;
+ U64 phys = 0;
- phys = (U64)(sysconf(_SC_PHYS_PAGES)) * (U64)(sysconf(_SC_PAGESIZE)/1024);
+ phys = (U64)(sysconf(_SC_PHYS_PAGES)) * (U64)(sysconf(_SC_PAGESIZE)/1024);
- s << "Total Physical KB: " << phys << std::endl;
-#else
- // *NOTE: This works on linux. What will it do on other systems?
- LLFILE* meminfo = LLFile::fopen(MEMINFO_FILE,"rb");
- if(meminfo)
+ stats.add("Total Physical KB", phys);
+
+#elif LL_LINUX
+ std::ifstream meminfo(MEMINFO_FILE);
+ if (meminfo.is_open())
{
- char line[MAX_STRING]; /* Flawfinder: ignore */
- memset(line, 0, MAX_STRING);
- while(fgets(line, MAX_STRING, meminfo))
+ // MemTotal: 4108424 kB
+ // MemFree: 1244064 kB
+ // Buffers: 85164 kB
+ // Cached: 1990264 kB
+ // SwapCached: 0 kB
+ // Active: 1176648 kB
+ // Inactive: 1427532 kB
+ // ...
+ // VmallocTotal: 122880 kB
+ // VmallocUsed: 65252 kB
+ // VmallocChunk: 52356 kB
+ // HardwareCorrupted: 0 kB
+ // HugePages_Total: 0
+ // HugePages_Free: 0
+ // HugePages_Rsvd: 0
+ // HugePages_Surp: 0
+ // Hugepagesize: 2048 kB
+ // DirectMap4k: 434168 kB
+ // DirectMap2M: 477184 kB
+
+ // Intentionally don't pass the boost::no_except flag. This
+ // boost::regex object is constructed with a string literal, so it
+ // should be valid every time. If it becomes invalid, we WANT an
+ // exception, hopefully even before the dev checks in.
+ boost::regex stat_rx("(.+): +([0-9]+)( kB)?");
+ boost::smatch matched;
+
+ std::string line;
+ while (std::getline(meminfo, line))
{
- line[strlen(line)-1] = ' '; /*Flawfinder: ignore*/
- s << line;
+ LL_DEBUGS("LLMemoryInfo") << line << LL_ENDL;
+ if (regex_match_no_exc(line, matched, stat_rx))
+ {
+ // e.g. "MemTotal: 4108424 kB"
+ LLSD::String key(matched[1].first, matched[1].second);
+ LLSD::String value_str(matched[2].first, matched[2].second);
+ LLSD::Integer value(0);
+ try
+ {
+ value = boost::lexical_cast<LLSD::Integer>(value_str);
+ }
+ catch (const boost::bad_lexical_cast&)
+ {
+ LL_WARNS("LLMemoryInfo") << "couldn't parse '" << value_str
+ << "' in " << MEMINFO_FILE << " line: "
+ << line << LL_ENDL;
+ continue;
+ }
+ // Store this statistic.
+ stats.add(key, value);
+ }
+ else
+ {
+ LL_WARNS("LLMemoryInfo") << "unrecognized " << MEMINFO_FILE << " line: "
+ << line << LL_ENDL;
+ }
}
- fclose(meminfo);
}
else
{
- s << "Unable to collect memory information";
+ LL_WARNS("LLMemoryInfo") << "Unable to collect memory information" << LL_ENDL;
}
+
+#else
+ LL_WARNS("LLMemoryInfo") << "Unknown system; unable to collect memory information" << LL_ENDL;
+
#endif
+
+ return stats.get();
}
std::ostream& operator<<(std::ostream& s, const LLOSInfo& info)
@@ -776,6 +1281,143 @@ std::ostream& operator<<(std::ostream& s, const LLMemoryInfo& info)
return s;
}
+class FrameWatcher
+{
+public:
+ FrameWatcher():
+ // Hooking onto the "mainloop" event pump gets us one call per frame.
+ mConnection(LLEventPumps::instance()
+ .obtain("mainloop")
+ .listen("FrameWatcher", boost::bind(&FrameWatcher::tick, this, _1))),
+ // Initializing mSampleStart to an invalid timestamp alerts us to skip
+ // trying to compute framerate on the first call.
+ mSampleStart(-1),
+ // Initializing mSampleEnd to 0 ensures that we treat the first call
+ // as the completion of a sample window.
+ mSampleEnd(0),
+ mFrames(0),
+ // Both MEM_INFO_WINDOW and MEM_INFO_THROTTLE are in seconds. We need
+ // the number of integer MEM_INFO_THROTTLE sample slots that will fit
+ // in MEM_INFO_WINDOW. Round up.
+ mSamples(int((MEM_INFO_WINDOW / MEM_INFO_THROTTLE) + 0.7)),
+ // Initializing to F32_MAX means that the first real frame will become
+ // the slowest ever, which sounds like a good idea.
+ mSlowest(F32_MAX)
+ {}
+
+ bool tick(const LLSD&)
+ {
+ F32 timestamp(mTimer.getElapsedTimeF32());
+
+ // Count this frame in the interval just completed.
+ ++mFrames;
+
+ // Have we finished a sample window yet?
+ if (timestamp < mSampleEnd)
+ {
+ // no, just keep waiting
+ return false;
+ }
+
+ // Set up for next sample window. Capture values for previous frame in
+ // local variables and reset data members.
+ U32 frames(mFrames);
+ F32 sampleStart(mSampleStart);
+ // No frames yet in next window
+ mFrames = 0;
+ // which starts right now
+ mSampleStart = timestamp;
+ // and ends MEM_INFO_THROTTLE seconds in the future
+ mSampleEnd = mSampleStart + MEM_INFO_THROTTLE;
+
+ // On the very first call, that's all we can do, no framerate
+ // computation is possible.
+ if (sampleStart < 0)
+ {
+ return false;
+ }
+
+ // How long did this actually take? As framerate slows, the duration
+ // of the frame we just finished could push us WELL beyond our desired
+ // sample window size.
+ F32 elapsed(timestamp - sampleStart);
+ F32 framerate(frames/elapsed);
+
+ // Remember previous slowest framerate because we're just about to
+ // update it.
+ F32 slowest(mSlowest);
+ // Remember previous number of samples.
+ boost::circular_buffer<F32>::size_type prevSize(mSamples.size());
+
+ // Capture new framerate in our samples buffer. Once the buffer is
+ // full (after MEM_INFO_WINDOW seconds), this will displace the oldest
+ // sample. ("So they all rolled over, and one fell out...")
+ mSamples.push_back(framerate);
+
+ // Calculate the new minimum framerate. I know of no way to update a
+ // rolling minimum without ever rescanning the buffer. But since there
+ // are only a few tens of items in this buffer, rescanning it is
+ // probably cheaper (and certainly easier to reason about) than
+ // attempting to optimize away some of the scans.
+ mSlowest = framerate; // pick an arbitrary entry to start
+ for (boost::circular_buffer<F32>::const_iterator si(mSamples.begin()), send(mSamples.end());
+ si != send; ++si)
+ {
+ if (*si < mSlowest)
+ {
+ mSlowest = *si;
+ }
+ }
+
+ // We're especially interested in memory as framerate drops. Only log
+ // when framerate drops below the slowest framerate we remember.
+ // (Should always be true for the end of the very first sample
+ // window.)
+ if (framerate >= slowest)
+ {
+ return false;
+ }
+ // Congratulations, we've hit a new low. :-P
+
+ LL_INFOS("FrameWatcher") << ' ';
+ if (! prevSize)
+ {
+ LL_CONT << "initial framerate ";
+ }
+ else
+ {
+ LL_CONT << "slowest framerate for last " << int(prevSize * MEM_INFO_THROTTLE)
+ << " seconds ";
+ }
+ LL_CONT << std::fixed << std::setprecision(1) << framerate << '\n'
+ << LLMemoryInfo() << LL_ENDL;
+
+ return false;
+ }
+
+private:
+ // Storing the connection in an LLTempBoundListener ensures it will be
+ // disconnected when we're destroyed.
+ LLTempBoundListener mConnection;
+ // Track elapsed time
+ LLTimer mTimer;
+ // Some of what you see here is in fact redundant with functionality you
+ // can get from LLTimer. Unfortunately the LLTimer API is missing the
+ // feature we need: has at least the stated interval elapsed, and if so,
+ // exactly how long has passed? So we have to do it by hand, sigh.
+ // Time at start, end of sample window
+ F32 mSampleStart, mSampleEnd;
+ // Frames this sample window
+ U32 mFrames;
+ // Sliding window of framerate samples
+ boost::circular_buffer<F32> mSamples;
+ // Slowest framerate in mSamples
+ F32 mSlowest;
+};
+
+// Need an instance of FrameWatcher before it does any good
+static FrameWatcher sFrameWatcher;
+
BOOL gunzip_file(const std::string& srcfile, const std::string& dstfile)
{
std::string tmpfile;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 09:58:11 +0000