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MCOL-379 - changed to make the check for mem available for dynamic

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This commit is contained in:
david hill
2017-05-30 14:33:21 -05:00
parent ccbdb07007
commit 22191d9088
1 changed files with 25 additions and 26 deletions
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51
utils/common/cgroupconfigurator.cpp
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@ -173,6 +173,9 @@ uint64_t CGroupConfigurator::getTotalMemory()
{
uint64_t ret;
if (totalMemory != 0)
return totalMemory;
if (!cGroupDefined)
ret = getTotalMemoryFromProc();
else {
@ -180,11 +183,7 @@ uint64_t CGroupConfigurator::getTotalMemory()
if (ret == 0)
ret = getTotalMemoryFromProc();
}
//ostringstream os;
//os << "Total mem available is " << ret;
//cerr << os.str() << endl;
//log(logging::LOG_TYPE_WARNING, os.str());
//cout << "Total mem available is " << ret << endl;
totalMemory = ret;
return totalMemory;
}
@ -217,31 +216,17 @@ uint64_t CGroupConfigurator::getTotalMemoryFromProc()
input[79] = '\0';
pclose(cmdPipe);
memTot = atoi(input);
//ostringstream os;
//os << "FreeBSD Total mem available is " << memTot;
//cerr << os.str() << endl;
//log(logging::LOG_TYPE_WARNING, os.str());
#else
ifstream in("/proc/meminfo");
string x;
in >> x;
in >> memTot;
//ostringstream os;
//os << "meminfo Total mem available is " << memTot;
//cerr << os.str() << endl;
//log(logging::LOG_TYPE_WARNING, os.str());
#endif
//memTot is now in KB, convert to bytes
memTot *= 1024;
//os << "meminfo Total bytes mem available is " << memTot;
//cerr << os.str() << endl;
//log(logging::LOG_TYPE_WARNING, os.str());
return memTot;
}
@ -322,24 +307,26 @@ uint64_t CGroupConfigurator::getMemUsageFromCGroup()
uint64_t CGroupConfigurator::getFreeMemoryFromProc()
{
uint64_t memFree = 0;
uint64_t memAvailable = 0;
uint64_t buffers = 0;
uint64_t cached = 0;
uint64_t memTotal = 0;
uint64_t memAvailable = 0;
#if defined(_MSC_VER)
MEMORYSTATUSEX memStat;
memStat.dwLength = sizeof(memStat);
if (GlobalMemoryStatusEx(&memStat))
{
memFree = memStat.ullAvailPhys;
memAvailable = memStat.ullAvailPhys;
#ifndef _WIN64
uint64_t tmp = getTotalMemoryFromProc();
if (memFree > tmp)
memFree = tmp;
memAvailable = tmp;
#endif
}
#elif defined(__FreeBSD__)
// FreeBSD is not supported, no optimization.
memFree = 0;
memAvailable = 0;
#else
ifstream in("/proc/meminfo");
string x;
@ -352,10 +339,22 @@ uint64_t CGroupConfigurator::getFreeMemoryFromProc()
in >> memFree;
in >> x; // kB
in >> x; // MemAvailable:
in >> memAvailable;
in >> x; // kB
//check if available or buffers is passed
in >> x;
if ( x == "MemAvailable:")
{
in >> memAvailable; // MemAvailable
}
else
{ // centos 6 and older OSs
in >> buffers;
in >> x; // kB
in >> x; // Cached:
in >> cached;
memAvailable = memFree + buffers + cached;
}
#endif
// amount available for application