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From: Mike Hearn <mike@plan99.net>
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Cc: Bitcoin Development <bitcoin-development@lists.sourceforge.net>,
Michael Gronager <gronager@ceptacle.com>
Subject: Re: [Bitcoin-development] Network propagation speeds
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Hey Christian,
Could you sort the snapshots by date? At the moment they're kind of in a
random order.
Sometimes I wish we had real-time stats too but this is a great start.
On Mon, Nov 25, 2013 at 8:27 PM, Christian Decker <
decker.christian@gmail.com> wrote:
> Thanks Mike for the Tip :-)
>
> I will definitely extend the calculations to include a size-normalized
> version. As for transaction propagations, being much smaller the
> measurements tend to be much noisier, but given enough samples we
> might be able to reconstruct some of the system parameters.
>
> Good idea to attempt to correlate propagation speed and number of
> inputs/outputs, might be interesting to see whether processing at the
> nodes has an influence.
>
> Regards,
> Chris
> --
> Christian Decker
>
>
> On Mon, Nov 25, 2013 at 9:51 AM, Michael Gronager <gronager@ceptacle.com>
> wrote:
> > Hi Christian,
> >
> > Cool - thanks for posting - agree, that it would be nice to normalize
> > the results with block size - so divide by size and:
> > 1. see if there is a correlation (we all presume there still is)
> > 2. plot the delay graph as e.g. normalized to the averaged blocksize or
> > lets define a "standard block size" of 200kb or what ever so we can
> > compare the plot btw days.
> >
> > Also, does the correlation of propagation times hold for transaction
> > sizes as well (would be ice to find the logical t0 and the constant - I
> > guess the interesting measure is not kb but signatures, so number of
> > inputs - some correlation with size though).
> >
> > Best,
> >
> > Michael
> >
> > On 24/11/13, 17:37 , Christian Decker wrote:
> >> Sure thing, I'm looking for a good way to publish these measurements,
> >> but I haven't found a good option yet. They are rather large in size,
> >> so I'd rather not serve them along with the website as it hasn't got
> >> the capacity. Any suggestions? If the demand is not huge I could
> >> provide them on a per user basis.
> >> --
> >> Christian Decker
> >>
> >>
> >> On Sun, Nov 24, 2013 at 5:26 PM, Gregory Maxwell <gmaxwell@gmail.com>
> wrote:
> >>> On Sun, Nov 24, 2013 at 8:20 AM, Christian Decker
> >>> <decker.christian@gmail.com> wrote:
> >>>> Since this came up again during the discussion of the Cornell paper I
> >>>> thought I'd dig up my measurement code from the Information
> >>>> Propagation paper and automate it as much as possible.
> >>>
> >>> Could you publish the block ids and timestamp sets for each block?
> >>>
> >>> It would be useful in correlating propagation information against
> >>> block characteristics.
> >>
> >>
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Content-Type: text/html; charset=UTF-8
<div dir="ltr">Hey Christian,<div><br></div><div>Could you sort the snapshots by date? At the moment they're kind of in a random order.</div><div><br></div><div>Sometimes I wish we had real-time stats too but this is a great start.</div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Nov 25, 2013 at 8:27 PM, Christian Decker <span dir="ltr"><<a href="mailto:decker.christian@gmail.com" target="_blank">decker.christian@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Thanks Mike for the Tip :-)<br>
<br>
I will definitely extend the calculations to include a size-normalized<br>
version. As for transaction propagations, being much smaller the<br>
measurements tend to be much noisier, but given enough samples we<br>
might be able to reconstruct some of the system parameters.<br>
<br>
Good idea to attempt to correlate propagation speed and number of<br>
inputs/outputs, might be interesting to see whether processing at the<br>
nodes has an influence.<br>
<div class="im HOEnZb"><br>
Regards,<br>
Chris<br>
--<br>
Christian Decker<br>
<br>
<br>
</div><div class="HOEnZb"><div class="h5">On Mon, Nov 25, 2013 at 9:51 AM, Michael Gronager <<a href="mailto:gronager@ceptacle.com">gronager@ceptacle.com</a>> wrote:<br>
> Hi Christian,<br>
><br>
> Cool - thanks for posting - agree, that it would be nice to normalize<br>
> the results with block size - so divide by size and:<br>
> 1. see if there is a correlation (we all presume there still is)<br>
> 2. plot the delay graph as e.g. normalized to the averaged blocksize or<br>
> lets define a "standard block size" of 200kb or what ever so we can<br>
> compare the plot btw days.<br>
><br>
> Also, does the correlation of propagation times hold for transaction<br>
> sizes as well (would be ice to find the logical t0 and the constant - I<br>
> guess the interesting measure is not kb but signatures, so number of<br>
> inputs - some correlation with size though).<br>
><br>
> Best,<br>
><br>
> Michael<br>
><br>
> On 24/11/13, 17:37 , Christian Decker wrote:<br>
>> Sure thing, I'm looking for a good way to publish these measurements,<br>
>> but I haven't found a good option yet. They are rather large in size,<br>
>> so I'd rather not serve them along with the website as it hasn't got<br>
>> the capacity. Any suggestions? If the demand is not huge I could<br>
>> provide them on a per user basis.<br>
>> --<br>
>> Christian Decker<br>
>><br>
>><br>
>> On Sun, Nov 24, 2013 at 5:26 PM, Gregory Maxwell <<a href="mailto:gmaxwell@gmail.com">gmaxwell@gmail.com</a>> wrote:<br>
>>> On Sun, Nov 24, 2013 at 8:20 AM, Christian Decker<br>
>>> <<a href="mailto:decker.christian@gmail.com">decker.christian@gmail.com</a>> wrote:<br>
>>>> Since this came up again during the discussion of the Cornell paper I<br>
>>>> thought I'd dig up my measurement code from the Information<br>
>>>> Propagation paper and automate it as much as possible.<br>
>>><br>
>>> Could you publish the block ids and timestamp sets for each block?<br>
>>><br>
>>> It would be useful in correlating propagation information against<br>
>>> block characteristics.<br>
>><br>
>> ------------------------------------------------------------------------------<br>
>> Shape the Mobile Experience: Free Subscription<br>
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>><br>
><br>
><br>
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