Hi All,
In order to track down some high memory usage problems I have in a
server process that is using the IronRuby engine I have run a test using
a single line script and have encountered an issue that looks
suspiciously like a memory leak. I'm scouring through the IronRuby code
commenting out a few static lists as I find them to see if they make any
difference but to date haven't come across anything useful.
The test I'm running is:
static void Main(string[] args)
{
ScriptRuntime scriptRuntime = IronRuby.CreateRuntime();
for (int index = 0; index < 1000; index++)
{
ScriptScope rubyScope = scriptRuntime.CreateScope("IronRuby");
rubyScope.Execute("print 'execute\n'");
}
Console.WriteLine("finished");
Console.ReadLine();
}
Executing this three times on 3 separate runs the resultant process had
memory allocations of the folowing amounts as shown in the Windows Task
Manager:
31,940k
31,936k
31,936k
Executing the loop 10,000 times on 3 separate runs resulted in memory
usage of:
133,648k
134,036k
133,808k
Changing to
static void Main(string[] args)
{
for (int index = 0; index < 1000; index++)
{
Console.WriteLine("execute");
}
Console.WriteLine("finished");
Console.ReadLine();
}
For 1,000 iterations memory usage was 8,402k.
For 10,000 iterations memory usage was 8,704k.
For 1,000,000 iterations memory usage was 9,348.
The reason I'm looking into this is that I am having to jeep a close eye
on my server process and re-start it every 3 or 4 days when the memory
usage gets up to 300 to 400MB.
Regards,
Aaron
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