Stop the world garbage collection maybe? Do you have gc logs enabled? On Jun 2, 2014 9:06 AM, "dzacu1a" <[email protected]> wrote:
> Hi, > We are doing a benchmark test and limiting the numbers of core used by > Storm. The topology contains 1 spout and 6 bolts. The first bolt has the > highest load. > Our experiment : we run the topology on one single machine with 4 cores. > We start with 1 core and then increasing to 2, 3 and 4 cores. We measure > the latency with a timestamp when the spout emits the tuple and when the > tuple reaches the last bolt. > The result : the latency results obtained from tests with 2,3 and 4 cores > are valid (as we expected - the latency results vary from 10 ms to 20 ms) > however we got strange values from the tests with only 1 core that we > can’t explain. The latency results vary from 4 ms to 120 ms. > Does anyone have any ideas why. > Thanks > Baoh
