users@grizzly.java.net

Re: File upload loadtesting

From: Ryan Lubke <ryan.lubke_at_oracle.com>
Date: Thu, 12 May 2011 09:06:33 -0700

On 5/12/11 5:00 AM, gagansnt wrote:
> Hi Alexey,
>
> What do you say about the CPU graphs, I think you know much more about the
> internals of how Grizzly should behave. Is the graphs inline with your
> understanding.

During load testing, we never saw the CPU utilization (total) go above
20% (this was with 8 selectors and 120 silmulated clients). The iowait,
isn't network related, but disk related - per the man page: Percentage
of time that the CPU or CPUs were idle during which the system had an
outstanding disk I/O request. So it seems your disk maybe can't keep up
with the write requests.

> Can you please help me understand the behavior.
>
> Thanks in advance
> Gagan
>
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