public void InitializeThreadCount(int?loadingThreads)
{
lock (this)
{
_threadCountPreferred = loadingThreads;
_simultaneousFileOptions = (ImportResultsSimultaneousFileOptions)Settings.Default.ImportResultsSimultaneousFiles;
}
}
public static int GetOptimalThreadCount(int?loadingThreads, int?fileCount,
ImportResultsSimultaneousFileOptions simultaneousFileOptions)
{
if (ParallelEx.SINGLE_THREADED)
{
return(1); // Makes debugging easier.
}
return(GetOptimalThreadCount(loadingThreads, fileCount, Environment.ProcessorCount,
simultaneousFileOptions));
}
public static int GetOptimalThreadCount(int?loadingThreads, int?fileCount, int processorCount, ImportResultsSimultaneousFileOptions simultaneousFileOptions)
{
if (!loadingThreads.HasValue)
{
switch (simultaneousFileOptions)
{
case ImportResultsSimultaneousFileOptions.one_at_a_time:
loadingThreads = 1;
break;
case ImportResultsSimultaneousFileOptions.several: // Several is 1/4 logical processors (i.e. 2 for an i7)
loadingThreads = Math.Max(2, processorCount / 4); // Min of 2, because you really expect more than 1
break;
case ImportResultsSimultaneousFileOptions.many: // Many is 1/2 logical processors (i.e. 4 for an i7)
loadingThreads = Math.Max(2, processorCount / 2); // Min of 2, because you really expect more than 1
break;
}
loadingThreads = Math.Min(MAX_PARALLEL_LOAD_FILES, loadingThreads.Value);
loadingThreads = GetBalancedThreadCount(loadingThreads.Value, fileCount);
}
return(loadingThreads.Value);
}
public static int GetOptimalThreadCount(int?loadingThreads, int?fileCount, int processorCount, ImportResultsSimultaneousFileOptions simultaneousFileOptions)
{
if (!loadingThreads.HasValue)
{
switch (simultaneousFileOptions)
{
case ImportResultsSimultaneousFileOptions.one_at_a_time:
loadingThreads = 1;
break;
case ImportResultsSimultaneousFileOptions.several: // Several is 1/4 logical processors (i.e. 2 for an i7)
loadingThreads = Math.Max(2, processorCount / 4); // Min of 2, because you really expect more than 1
break;
case ImportResultsSimultaneousFileOptions.many: // Many is 1/2 logical processors (i.e. 4 for an i7)
loadingThreads = Math.Max(2, processorCount / 2); // Min of 2, because you really expect more than 1
break;
}
// On some systems we find that parallel performance suffers when not using ServerGC, as during SkylineTester runs
var maxLoadThreads = GetMaxLoadThreadCount();
loadingThreads = Math.Min(maxLoadThreads, loadingThreads.Value);
loadingThreads = GetBalancedThreadCount(loadingThreads.Value, fileCount);
}
return(loadingThreads.Value);
}