public override Task <List <Node.MemoryUtilization> > GetMemoryUtilization(Node node, DateTime?start, DateTime?end, int?pointCount = null)
{
var wNode = _wmiNodes.FirstOrDefault(x => x.Id == node.Id);
if (wNode == null)
{
return(Task.FromResult(new List <Node.MemoryUtilization>()));
}
Node.MemoryUtilization startVal = null;
if (start.HasValue)
{
startVal = new Node.MemoryUtilization {
DateTime = start.Value
};
}
Node.MemoryUtilization endVal = null;
if (end.HasValue)
{
endVal = new Node.MemoryUtilization {
DateTime = end.Value
};
}
return(FilterHistory(wNode.MemoryHistory, startVal, endVal, new MemoryUtilComparer()));
}
private void PollMemoryUtilization(WmiNode wmiNode)
{
var node = wmiNode.Node;
const string query = @"select
AvailableKBytes
from Win32_PerfFormattedData_PerfOS_Memory";
using (var q = Wmi.Query(node.Name, query))
{
var data = q.GetFirstResult();
if (data == null)
return;
var available = data.AvailableKBytes * 1024;
node.MemoryUsed = node.TotalMemory - available;
var utilization = new Node.MemoryUtilization
{
DateTime = DateTime.UtcNow,
MaxMemoryUsed = node.MemoryUsed,
AvgMemoryUsed = node.MemoryUsed
};
wmiNode.AddMemoryUtilization(utilization);
}
}
