Re: Traffic throttling

Okay, I've narrowed this down to a hardware issue -- something's going
badly wrong with the camera we're using to acquired image data. Thanks for
the help, everyone!

-Chris


On Tue, Aug 20, 2013 at 9:18 AM, Derakon <[email protected]> wrote:

> I thought of that problem before, and so manually invoke the garbage
> collector once every 100 images. I've been running that way since before we
> found out about this problem though.
>
> Something I just tried was not actually sending an image over -- I still
> make the RPC, but with no extra data, so the bandwidth used is functionally
> nil. I still see the throttling happen in this case. So it's not a question
> of how much data I'm sending, but something else. I've added logging on the
> data source computer to track how long RPCs take, and it is seeing the
> throttling as RPCs taking much longer than usual. In the cases where
> traffic is throttled to zero, it always seems to take 10s; once that
> "clears up" traffic then returns to normal.
>
> In other words, what I'm seeing is:
>
> Start: can make lots of RPCs/sec
> Throttle level 1: can make 33 RPCs/sec.
> Throttle level 2: for 10s, cannot make any RPCs.
> Throttle removed: can make lots of RPCs/sec.
>
> Given that consistency, I'm disinclined to blame some kind of resource
> constraint on either computer; it seems more likely I'm dealing with some
> kind of rule-based throttle here.
>
> -Chris
>
>
> On Tue, Aug 20, 2013 at 6:19 AM, Kent Borg <[email protected]> wrote:
>
>> Could it be a garbage collection problem within your Python code?
>>
>> (Could MS Windows be using and reclaiming some resource??)
>>
>> -kb
>>
>>
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