Re: [bitcoin-dev] Minimum Block Size

2015-08-16 Thread Mark Friedenbach via bitcoin-dev
Levin, it is a complicated issue for which there isn't an easy answer. Part
of the issue is that block size doesn't actually measure resource usage
very reliably. It is possible to support a much higher volume of typical
usage transactions than transactions specifically constructed to cause DoS
issues. But if block size is the knob being tweaked, then you must design
for the DoS worst case, not the average/expected use case.

Additionally, there is an issue of time horizons and what presumed
improvements are made to the client. Bitcoin Core today can barely handle
1MB blocks, but that's an engineering limitation. So are we assuming fixes
that aren't actually deployed yet? Should we raise the block size before
that work is tested and its performance characteristics validated?

It's a complicated issue without easy answers, and that's why you're not
seeing straightforward statements of 2MB, 8MB, or 20MB from most of
the developers.

But that's not to say that people aren't doing anything. There is a
workshop being organized for September 12-13th that will cover much of
these it's complicated issues. There will be a follow-on workshop in the
Nov/Dec timeframe in which specific proposals will be discussed. I
encourage you to participate:

http://scalingbitcoin.org/

On Sun, Aug 16, 2015 at 9:41 AM, Levin Keller via bitcoin-dev 
bitcoin-dev@lists.linuxfoundation.org wrote:

 Hey everyone,

 as with the current max block size debate I was wondering: Is anyone
 here in favor of a minimum block size (say 2 MB or so)? If so I would be
 interested in an exchange (maybe off-list) of ideas. I am in favor of a
 lower limit and am giving it quite a bit of thought at the moment.

 Cheers

 Levin

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Re: [bitcoin-dev] Minimum Block Size

2015-08-16 Thread Jeff Garzik via bitcoin-dev
minimum an interesting topic.

- Traffic levels may not produce a minimum size block
- Miners can always collude to produce a lowered maximum block size, a sort
of minimum maximum



On Sun, Aug 16, 2015 at 12:41 PM, Levin Keller via bitcoin-dev 
bitcoin-dev@lists.linuxfoundation.org wrote:

 Hey everyone,

 as with the current max block size debate I was wondering: Is anyone
 here in favor of a minimum block size (say 2 MB or so)? If so I would be
 interested in an exchange (maybe off-list) of ideas. I am in favor of a
 lower limit and am giving it quite a bit of thought at the moment.

 Cheers

 Levin

 ___
 bitcoin-dev mailing list
 bitcoin-dev@lists.linuxfoundation.org
 https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev


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Re: [bitcoin-dev] Minimum Block Size

2015-08-16 Thread Patrick Strateman via bitcoin-dev
The first question to answer here is simple:

What value would there be in requiring a minimum block size?

I see no value.

On 08/16/2015 05:30 PM, Jeff Garzik via bitcoin-dev wrote:
 minimum an interesting topic.

 - Traffic levels may not produce a minimum size block
 - Miners can always collude to produce a lowered maximum block size, a
 sort of minimum maximum



 On Sun, Aug 16, 2015 at 12:41 PM, Levin Keller via bitcoin-dev
 bitcoin-dev@lists.linuxfoundation.org
 mailto:bitcoin-dev@lists.linuxfoundation.org wrote:

 Hey everyone,

 as with the current max block size debate I was wondering: Is
 anyone here in favor of a minimum block size (say 2 MB or so)? If
 so I would be interested in an exchange (maybe off-list) of ideas.
 I am in favor of a lower limit and am giving it quite a bit of
 thought at the moment.

 Cheers

 Levin

 ___
 bitcoin-dev mailing list
 bitcoin-dev@lists.linuxfoundation.org
 mailto:bitcoin-dev@lists.linuxfoundation.org
 https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev




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 bitcoin-dev@lists.linuxfoundation.org
 https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev

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