[concurrency-interest] Concurrent telemetry gathering
kav at it.edu
Thu Nov 16 04:50:21 EST 2006
Kasper Nielsen wrote:
> Gregg Wonderly wrote:
>> I'm working on collecting telemetry regarding bandwidth utilization through a
>> "connection". I've defined the following class, thinking that this should
>> minimize concurrency for updating the numbers.
>> In addition, there is a
>> ConcurrentHashMap<OutboundConnection,ConnectionBandwidth> object that is
>> accessed by threads of execution which are handling the I/O requests through the
>> system. That map is lazily initialized with putIfAbsent(). When the first
>> entry is added, there is a ScheduledThreadPoolExecutor used to schedule a
>> regular execution of "run" to create a time based running average of bandwidth
>> Is there anything else I should do differently?
> Have you considered using (single) exponential smoothing instead. What
> are you using the numbers for?
Having had a second look on the code, I see that you are already using
exponential smoothing with a smoothing constant of 1/avgIntv. Never mind
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