folks, thanks for looking at the network layer. I have thought a bit about
what we could do from the rsyslog side to get more reliable results, but I
think it is better if I back off until we get stable stats from the network
layer. So I standby and will chime back in as soon as we are ready to look
at rsyslog again (pls ping me if I miss that very moment!).

Thanks,
Rainer


On Tue, Oct 1, 2013 at 8:35 AM, David Lang <[email protected]> wrote:

> On Mon, 30 Sep 2013, Robert wrote:
>
>  The way I calculated the bytes was by getting the cacti reading, 590Mb ->
>> ÷ 250,000 eps = 310 bytes ÷ 8 sources = 39bytes ? Hopefully I did the math
>> right.
>>
>
> is one 'event' from spirent one log message or on log message from each
> source? (the stats you have been providing are not showing that the
> distribution of events is even)
>
> I would say 590Mb / 250,000 = 310 bytes per log message (which includes
> some packet overhead).
>
> 310 bytes per log message seems quite reasonable
>
>
>  When I ramp up the spirent to 250k eps, the tcpdump command shows ~ 232k
>>
>
> this seems to me like you are loosing messages at the network/kernel level
> before you even get to rsyslog. is tcpdump clamining that some messages
> were dropped by the kernel? or is it thinking that it's got everything?
>
> if you drop the rate to 220,000 events per second, does tcpdump indicate
> you are getting them all?
>
> David Lang
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